WO2014061330A1 - Rotational-plasticity forming device - Google Patents
Rotational-plasticity forming device Download PDFInfo
- Publication number
- WO2014061330A1 WO2014061330A1 PCT/JP2013/070463 JP2013070463W WO2014061330A1 WO 2014061330 A1 WO2014061330 A1 WO 2014061330A1 JP 2013070463 W JP2013070463 W JP 2013070463W WO 2014061330 A1 WO2014061330 A1 WO 2014061330A1
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- WO
- WIPO (PCT)
- Prior art keywords
- movable shaft
- transmission gear
- roller
- rotation
- gear
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H5/00—Making gear wheels, racks, spline shafts or worms
- B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/04—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow radial displacement, e.g. Oldham couplings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/60—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising pushing or pulling links attached to both parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
- F16H2057/0222—Lateral adjustment
Definitions
- the present invention includes a material support portion that is rotationally driven by a rotational drive means around a main shaft and a roller that plastically processes the material to be processed while supporting a material to be processed having a circular outer peripheral surface as viewed in the axial direction.
- Rotation provided with a pressing mechanism that moves in a direction perpendicular to the main shaft and presses the roller against the workpiece, and a synchronous rotation mechanism that transmits the rotation of the main shaft to the roller so as to rotate the roller synchronously with the material support.
- the present invention relates to a plastic working apparatus.
- Such a rotary plastic working apparatus rotates the material support part that supports the work material, and presses the roller against the work material by the pressing mechanism in a state in which the roller rotates synchronously with the material support part by the synchronous rotation mechanism.
- the workpiece material is plastically processed.
- the external teeth are formed on the outer peripheral surface of a disk-shaped material, which is an example of a material to be processed, using a roller having an outer tooth forming die on the outer peripheral surface. To do.
- a synchronous rotation mechanism a synchronous gear that rotates together with the material support portion, a driven gear that rotates together with the roller and meshes with the synchronous gear, and the roller and the driven gear as the main shaft. It is configured to include a pressing mechanism that integrally moves in the orthogonal direction to engage the driven gear with the synchronous gear and simultaneously presses the roller against the workpiece (see, for example, Patent Document 1). ). And the workpiece material was plastically processed by making the pressing mechanism work.
- FIG. 10 shows a comparative example of the rotary plastic working apparatus when the eccentric coupling 40 is used
- FIG. 10 (a) is a front view of the periphery of the eccentric coupling 40 in the rotary plastic working apparatus
- 10 (b) is a transverse plan view.
- the eccentric coupling 40 includes a plurality of ring-shaped driven plates 41 and a rotation axis A3 that is eccentric to the rotation axis A2 of the driven plate 41 and that can transmit rotation to the driven plate 41 (for example, 3
- the ring-shaped intermediate plate 42 connected to the driven plate 41 by the driven side link 44 and the rotational axis A4 are eccentric from the rotational axis A3 of the intermediate plate 42, and the rotation can be transmitted to the intermediate plate 42.
- a ring-shaped drive plate 43 connected to the intermediate plate 42 by a plurality of (for example, three) drive-side links 45 is provided.
- the plurality of driven side links 44 are dispersedly arranged around the rotation axis A2 of the driven plate 41 in a state of being parallel to each other, and the plurality of driving side links 45 are also in a state of being parallel to each other. Distributed around the center A4.
- One end of each driven side link 44 and one end of each drive side link 45 are pivotally supported by the intermediate plate 42 at a concentric pivot axis, and the other end of each driven side link 44 is pivotally supported by the driven plate 41.
- the other end of each drive side link 45 is pivotally supported by the drive plate 43.
- the distance between the pivot axes on both sides in each of the plurality of driven links 44 and the distance between the pivot axes on both sides in each of the plurality of drive links 45 are all the same. That is, the eccentric coupling 40 is a so-called Schmidt coupling, and the rotation of the drive plate 43 can be transmitted synchronously to the driven plate 41 via the intermediate plate 42 and is also driven by the rotational axis A4 of the drive plate 43.
- the rotation axis A2 of the plate 41 is configured to be eccentric.
- the transmission gear 9 is concentrically connected to the drive plate 43 on the opposite side to the intermediate plate 42 side so as to rotate integrally therewith, and the driven plate 41 is opposite to the intermediate plate 42 side.
- roller 4 is concentrically connected to the rotation axis A2 via the movable shaft 46 so as to be integrally rotatable. That is, the rotational axis A4 of the transmission gear 9 can be eccentric with the rotational axis A2 of the roller 4.
- the drive plate 43 is pressed toward the main shaft (not shown) by a hydraulic cylinder (not shown) or the like, and the transmission gear 9 is rotated synchronously with the material support portion (not shown) around the main shaft (not shown).
- the workpiece 4 is plastically processed by moving the roller 4 in a direction orthogonal to the main shaft by pressing the roller 4 against the workpiece (not shown) by a pressing mechanism (not shown). . That is, with the transmission gear 9 meshed sufficiently deeply with a synchronous gear (not shown), the roller 4 that has already been rotated synchronously with the material support portion is moved closer to the workpiece material from a position away from the workpiece material.
- the roller 4 Since it can be pressed against the workpiece, it is possible to prevent backlash from occurring in the transmission gear 9 from the beginning when the roller 4 is pressed against the workpiece.
- the roller 4 is supported in a cantilever manner by the eccentric coupling 40 via the driven plate 41, and a force acts on the roller 4 in a direction perpendicular to the rotational axis A2.
- the bending moment at the base due to the cantilever directly acts on the driven side link 44. Since this bending moment is further transmitted to the drive plate 43 via the drive side link 45, a large deflection angle is generated at the two link portions of the driven side link 44 and the drive side link 45, and the synchronized rotation becomes unstable. , Reduce the processing accuracy of the workpiece material.
- the eccentric coupling 40 may be damaged.
- the present invention has been made in view of such circumstances, and an object thereof is to provide a rotary plastic processing apparatus capable of improving the processing accuracy.
- a rotary plastic working apparatus is a material that is rotationally driven by a rotational drive means around a main shaft in a state of supporting a work material having a circular outer peripheral surface as viewed in the axial direction.
- the synchronous rotation mechanism is A synchronous gear that rotates integrally with the material support around the main shaft;
- a driven plate coupled to the movable shaft so as to be integrally rotatable, and disposed on an outer peripheral portion of the movable shaft, and a driven side link mechanism in which the rotational axis is eccentric from the movable shaft and the rotation can be transmitted to the driven plate
- an intermediate plate having an inner diameter coupled to the driven plate having a larger diameter than the movable shaft, and an outer peripheral portion of the movable shaft, and a rotational axis is eccentric from the movable shaft and the intermediate plate
- the eccentric coupling is provided in a state in which both ends of the movable shaft are rotatably supported by bearings in a posture in which the movable shaft is parallel to the main shaft,
- the pressing mechanism is provided so as to move the movable shaft along an axis-to-center perpendicular connecting the rotation axis of the movable shaft and the rotation axis of the main shaft.
- the position of the transmission gear is held in a state where the transmission gear is engaged with the synchronous gear by the transmission gear position holding mechanism, so that the rotation of the material support portion is synchronously transmitted to the transmission gear via the synchronous gear.
- the transmission gear rotates in synchronization with the material support portion.
- the drive plate rotates together with the transmission gear, and the rotation of the drive plate is synchronously transmitted to the driven plate via the drive side link mechanism, the intermediate plate, and the driven side link mechanism.
- the movable shaft that is concentrically supported so as to be integrally rotatable is in a state in which the rotational shaft center can be eccentric with the rotational shaft center of the drive plate (that is, transmission gear) and both ends thereof are supported by bearings.
- both ends of the movable shaft that can rotate integrally with the roller are supported by the support member through the bearing while using the eccentric coupling that can eccentrically rotate the rotation shaft center of the transmission gear and the rotation shaft center of the roller.
- the rotational force is transmitted from the transmission gear through the drive plate, intermediate plate, and driven plate with almost no backlash generated on the roller, and the force acting in the direction perpendicular to the rotational axis of the roller. Realizes a rational structure that is transmitted directly to the support member as a shearing force via the movable shaft.
- the rotary plastic working apparatus is further characterized in that, in the eccentric coupling, the driven side link mechanism includes a plurality of one end pivotally supported by the intermediate plate and the other end pivotally supported by the driven plate.
- the plurality of driven side links are distributed in the circumferential direction of the movable shaft in a state in which the plurality of driven side links are parallel to each other, and the drive side link mechanism is pivotally supported at one end by the intermediate plate.
- the transmission gear position holding mechanism moves the transmission gear to the synchronous gear at a position where the rotational axis of the transmission gear is biased by a set amount in a direction perpendicular to the axis-centered perpendicular from the axis-centered perpendicular. It is in the point comprised so that it may hold
- the transmission gear is held in a state in which the rotation shaft is meshed with the synchronous gear at a position where the rotation axis is deviated by a set amount in a direction perpendicular to the axis-center perpendicular. Therefore, the rotation of the drive plate that rotates concentrically with the transmission gear while the movable shaft, which is already rotating synchronously with the material support portion, is moved toward the main shaft along the axis-center perpendicular by the pressing mechanism.
- the shaft center and the rotation axis of the driven plate that rotates concentrically and concentrically with the movable shaft are maintained in a state of being separated in a direction perpendicular to the axis-center perpendicular.
- the longitudinal direction of the driven side link and the drive side during the period from when the roller rotating synchronously with the material support unit is pressed to the workpiece material from the position away from the workpiece material and pressed against the workpiece material It can be maintained in a state where the longitudinal directions of the links intersect.
- the longitudinal direction of the driven side link and the longitudinal direction of the driving side link intersect, it becomes possible to sufficiently suppress the wobbling of the rotation axis of the intermediate plate, and accordingly, the driven plate Of the rotation axis of the roller, that is, the rotation axis of the roller and the rotation axis of the drive plate, that is, the rotation axis of the transmission gear, can be sufficiently suppressed. it can.
- the rotational axis of the drive plate that rotates concentrically with the transmission gear and the rotational axis of the driven plate that rotates concentrically with the movable shaft are sometimes concentric.
- the straight line connecting the pivot shafts on both sides of the driven side link and the drive side link in the direction of the rotational axis of the driven plate is in a parallel state (hereinafter, sometimes referred to as “the longitudinal direction of the driven side link and the longitudinal direction of the drive side link are parallel”). If the longitudinal direction of the driven side link and the longitudinal direction of the driving side link are in a parallel state, it becomes difficult to sufficiently suppress the fluctuation of the rotation axis of the intermediate plate, and accordingly, the rotation axis of the driven plate, that is, the rotation of the roller.
- an outer tooth forming die is provided on the outer peripheral surface of the roller,
- the present invention resides in that external teeth are formed on the outer peripheral surface of the workpiece material to produce a gear having external teeth.
- the external tooth forming die of the roller in the rotating state is pressed against the work material supported by the material support portion in the rotating state, so that the external teeth are formed on the outer peripheral surface of the work material.
- a gear having external teeth is manufactured. Therefore, the processing accuracy of the gear having the external teeth can be improved.
- a workpiece supported by the material support portion is moved by moving a holding member that can rotate concentrically with the main shaft toward the material support portion.
- the material holding mechanism is operated to execute a material holding process for holding the workpiece material between the material support portion and the holding member, the pressing mechanism is operated, and the transmission gear is held by the transmission gear position holding mechanism.
- Control means is provided for executing a processing step of plastic processing the workpiece material by the roller in a state of being engaged with the synchronous gear.
- the material holding step of holding the workpiece material between the material support portion and the holding member is performed, and the roller that rotates in synchronization with the material support portion is covered with the transmission gear meshed with the synchronization gear.
- a machining process is performed in which the workpiece material is plastically pressed by pressing against the workpiece material from a position away from the workpiece material. Accordingly, the process of processing the material to be processed so as to improve the processing accuracy is automatically executed sequentially.
- FIG. 1A is a front view showing a schematic overall configuration of the rotary plastic working apparatus
- FIG. 1B is an exploded perspective view of the eccentric coupling 10.
- the rotary plastic working apparatus rotates around the main shaft 1 while supporting a disk-shaped material (an example of a work material having a circular outer peripheral surface as viewed in the axial direction).
- a material support portion 3 that is rotationally driven by a driving device (an example of a rotational drive means) 2 and a roller 4 that plastically processes the disk-shaped material W are moved in a direction perpendicular to the main shaft 1 to move the roller 4 to the disk-shaped material W.
- a synchronous rotation mechanism S that transmits the rotation of the main shaft 1 to the roller 4 so as to rotate the roller 4 synchronously with the material support 3.
- a pressing member 5 an example of a holding member
- a workpiece holding mechanism (an example of a material holding mechanism) H that holds W between the pressing member 5 and the material support portion 3 and a control portion 7 that controls the operation of the rotary plastic working apparatus are provided.
- the rotary plastic working apparatus of this embodiment is provided with an external tooth forming die 4 m on the outer peripheral surface of the roller 4, and external teeth on the outer peripheral surface of the disk-shaped material W as shown in FIG. 8.
- Wo is formed to produce a gear W (hereinafter sometimes simply referred to as a gear) having external teeth Wo.
- FIG. 8A is a perspective view of the disk-shaped material W before plastic working
- FIG. 8B is a perspective view of the gear W.
- the disk-shaped material W has a circular outer peripheral surface as viewed in the axial direction, and has a shaft hole Wh that is concentric with and penetrates the axial center.
- the length of the external tooth forming die 4m of the roller 4 (corresponding to the length in the axial direction) is set to be slightly longer than the target length of the external teeth formed on the outer peripheral surface of the disc-shaped material W. Yes.
- the direction along the rotation axis A1 of the main shaft 1 is the Z direction
- the direction orthogonal to the rotation axis A1 of the main shaft 1 is the X direction
- the Z direction the direction orthogonal to both the X directions may be described as the Y direction.
- the direction approaching the base end of the main shaft 1 is defined as the -Z direction
- the direction away from the base end of the main shaft 1 is defined as the + Z direction.
- the direction approaching the rotation axis A1 of the main shaft 1 is defined as the -X direction
- the direction away from the rotation axis A1 of the main shaft 1 is defined as the + X direction.
- the synchronous rotation mechanism S is provided with a synchronous gear 8 that rotates integrally with the material support portion 3 around the main shaft 1, and a transmission that is arranged in mesh with the synchronous gear 8.
- the gear 9, the driven plate 12 connected to the movable shaft 11 so as to be integrally rotatable, are disposed on the outer periphery of the movable shaft 11, and the rotational axis A3 is eccentric from the movable shaft 11 and rotates to the driven plate 12.
- An intermediate plate 13 having an inner diameter coupled to the driven plate 12 by the followable link mechanism Ls capable of transmission is disposed on the outer periphery of the movable shaft 11 and the rotary shaft A4.
- An eccentric coupling 10 having a drive plate 14 having an inner diameter larger than that of the movable shaft 11, which is eccentric to the movable shaft 11 and connected to the intermediate plate 13 by a drive side link mechanism Ld so as to be able to transmit rotation to the intermediate plate 13;
- the position of the transmission gear 9 is configured by a transmission gear position holding mechanism K for retaining in a state of meshing the synchronizing gear 8.
- the drive plate 14 is concentrically connected to the transmission gear 9 so as to be integrally rotatable, and the end portion of the movable shaft 11 penetrating the drive plate 14 is concentrically rotatable integrally with the roller 4.
- the eccentric coupling 10 is provided in a state in which both ends of the movable shaft 11 are rotatably supported by the movable shaft bearing 21 in a posture in which the movable shaft 11 is parallel to the main shaft 1.
- D is provided so as to move the movable shaft 11 along the axis-centered perpendicular ⁇ connecting the rotation axis A2 of the movable shaft 11 and the rotation axis A1 of the main shaft 1. That is, the X direction is a direction along the axis-centered perpendicular ⁇ .
- the axis center perpendicular line ⁇ connects the rotation axis A2 of the movable shaft 11 located at a predetermined start position Ps (see FIG. 3) and the rotation axis A1 of the main shaft 1 at the start of movement. Defined as a normal.
- both the rotation axis of the driven plate 12 and the rotation axis of the roller 4 that are concentric with the rotation axis A2 of the movable shaft 11 are also denoted by reference numeral A2.
- the rotational axis of the transmission gear 9 concentric with the rotational axis A4 of the drive plate 14 is also indicated by reference numeral A4.
- 2A is a front view showing in detail the periphery of the eccentric coupling 10
- FIG. 2B is a cross-sectional plan view showing the eccentric coupling 10.
- a main shaft 1 is rotatably supported around a rotation axis A1 along the vertical direction on a gantry (not shown), and a rotary drive device 2 such as an electric motor is provided.
- the main shaft 1 is provided so as to be rotationally driven.
- a material support portion 3 is attached to the tip of the main shaft 1, and a synchronous gear 8 is provided on the outer peripheral surface of the main shaft 1 near the lower portion of the material support portion 3.
- the material support portion 3 includes a cylindrical main body portion 3b and a columnar insertion shaft portion 3a having a smaller diameter than the main body portion 3b projecting concentrically from the distal end surface of the main body portion 3b.
- the part 3a can be fitted in the shaft hole Wh of the disk-shaped material W.
- the material support portion 3 is attached to the tip of the main shaft 1 in a state of being concentric with the rotation axis A1. That is, the disk-shaped material W is inserted into the shaft hole Wh through the insertion shaft portion 3a of the material support portion 3 and is in contact with the distal end surface of the main body portion 3b of the material support portion 3.
- the rotation driving device 2 When the rotation driving device 2 is operated, the material support portion 3 and the synchronous gear 8 rotate concentrically and integrally around the rotation axis A1 of the main shaft 1.
- the work holding mechanism H includes a pressing member 5 and a hydraulic cylinder for holding a workpiece that reciprocates the pressing member 5 along the rotation axis A ⁇ b> 1 direction (Z direction) of the main shaft 1. 6, and the pressing member 5 is disposed so as to face the material support portion 3.
- the pressing member 5 is rotatably supported at the tip of the cylinder rod of the work holding hydraulic cylinder 6 via a bearing (not shown) so that it can rotate concentrically with the rotational axis A1 of the main shaft 1.
- the work holding hydraulic cylinder 6 so as to press the pressing member 5 against the disk-shaped material W mounted on the material support portion 3, the disk-shaped material W is held between the material support portion 3 and the pressing member 5.
- the main shaft 1 may be rotationally driven by the rotation drive device 2, and the disk-shaped raw material W may be rotated integrally with the raw material support part 3 in the state clamped by the raw material support part 3 and the press member 5.
- the driven plate 12 is attached to the movable shaft 11 in an outer fitting shape so as to be integrally rotatable around the rotation axis A2.
- the drive plate 14 and the intermediate plate 13 are each configured in a ring shape having an inner diameter larger than that of the movable shaft 11, and the ring-shaped intermediate plate 13 is positioned on the outer peripheral portion of the movable shaft 11 (the movable shaft 11 is in the middle).
- the driven side link mechanism Ls of the driven plate 12 is connected by a driven side link mechanism Ls of the driven plate 12 attached to the movable shaft 11 in a state where the rotational axis A3 thereof is parallel to the rotational axis A2 of the driven plate 12, and
- the ring-shaped drive plate 14 is located on the outer peripheral portion of the movable shaft 11 (the movable shaft 11 is inserted through the drive plate 14), and the rotation axis A4 thereof is parallel to the rotation axis A2 of the driven plate 12.
- the drive side link mechanism Ld is connected to the intermediate plate 13.
- the transmission gear 9 is fixed to the drive plate 14 on the side opposite to the intermediate plate 13 side with its rotational axis A4 concentric with the rotational axis A4 of the drive plate 14.
- the drive plate 14 is concentrically connected to the transmission gear 9 around the rotation axis A4 so as to be integrally rotatable.
- the movable shaft 11 protrudes from both the driven plate 12 and the transmission gear 9, and the roller 4 is concentrically attached to the intermediate portion of the protruding portion from the transmission gear 9 on the movable shaft 11 so as to be integrally fitted. ing. That is, the end of the movable shaft 11 that penetrates the drive plate 14 is connected to the roller 4 so as to be concentrically and integrally rotatable around the rotation axis A2.
- the driven side link mechanism Ls includes four driven side links 15 having one end pivotally supported by the intermediate plate 13 and the other end pivotally supported by the driven plate 12.
- the driven links 15 are distributed in the circumferential direction of the movable shaft 11 in a state of being parallel to each other, and the driving side link mechanism Ld is pivotally supported at one end by the intermediate plate 13 and at the other end by the driving plate 14.
- the four drive side links 16 are configured to be distributed in the circumferential direction of the movable shaft 11 in a state in which the four drive side links 16 are parallel to each other.
- one end of each driven side link 15 and one end of each drive side link 16 are pivotally supported on the intermediate plate 13 by a concentric pivot axis a1.
- a pivot axis in which the other end of each driven side link 15 is pivotally supported by the driven plate 12 is indicated by reference numeral a ⁇ b> 2, and the other end of each drive side link 16 is pivotally supported by the drive plate 14.
- the pivot axis is indicated by reference numeral a3.
- the distance between the pivot axes a1 and a2 on both sides of the four driven links 15 and the distance between the pivot axes a1 and a3 on both sides of the four drive links 16 are all the same. is there.
- the relative positions of the rotation axis A4 of the drive plate 14 and the rotation axis A2 of the driven plate 12 with respect to the rotation axis A3 of the intermediate plate 13 are configured to be freely changeable.
- the rotation axis A4 and the rotation axis A2 of the driven plate 12 are configured to be eccentric within a predetermined range. Even if the rotation axis A4 of the drive plate 14 and the rotation axis A2 of the driven plate 12 are decentered within a required range, the driven plate 12, the intermediate plate 13, the drive plate 14, and the four driven links. Fifteen and four drive side links 16 are configured not to interfere with the movable shaft 11.
- both ends of the movable shaft 11 of the eccentric coupling 10 in which the transmission gear 9 and the roller 4 are assembled as described above are supported by a pair of movable shaft bearings 21 in a front view.
- a unit-shaped processing unit U is configured to be rotatably supported by a U-shaped support frame 22.
- the processing unit U is supported by the pair of rails 24 on the support base 23 so as to be reciprocally movable in the X direction with the movable shaft 11 parallel to the main shaft 1, and is thus supported by the pair of rails 24.
- a screw shaft 25 having a rotation axis centered along the axis-centered perpendicular ⁇ is screwed into the support frame 22 of the processed unit U.
- An X-direction drive device 26 such as a pulse motor that reciprocally moves the machining unit U in the X direction by rotating the screw shaft 25 forward and backward is provided. That is, when the machining unit U reciprocates in the X direction, the reciprocating movement is performed in a state in which the rotational axis A2 of the movable shaft 11 moves on the axis center perpendicular line ⁇ .
- the X-direction drive device 26 is configured to function as a pressing mechanism D that moves the roller 4 in a direction (X direction) orthogonal to the main shaft 1 and presses the roller 4 against the disk-shaped material W.
- the eccentric coupling 10 is provided in a state where both ends of the movable shaft 11 are rotatably supported by the movable shaft bearing 21 in a posture in which the movable shaft 11 is parallel to the main shaft 1.
- the X-direction drive device 26 is provided so as to move the movable shaft 11 along the axis-center perpendicular ⁇ connecting the rotation axis A2 of the movable shaft 11 and the rotation axis A1 of the main shaft 1. become.
- the transmission gear position holding mechanism K rotates the drive plate 14 via a drive plate bearing 27.
- the rotary support frame 28 is supported freely, and the transmission gear holding hydraulic cylinder 29 is configured to move the rotary support frame 28 along the axis-centered perpendicular ⁇ . That is, the drive plate 14 is rotatably supported by the rotation support frame 28 via the drive plate bearing 27.
- the transmission gear holding hydraulic cylinder 29 is provided so as to reciprocate the drive plate 14 in the X direction in a state where the rotational axis A4 of the drive plate 14 moves on the axis-interval perpendicular ⁇ .
- the transmission gear position holding mechanism K is configured to hold the transmission gear 9 in a state in which the position of the transmission gear 9 is engaged with the synchronous gear 8.
- the rotation axis A4 of the drive plate 14 and the rotation axis A2 of the driven plate 12 are It is configured not to be eccentric.
- the start position Ps is set to the rotational axis A4 of the transmission gear 9 whose position is held in a state of being meshed with the synchronous gear 8 by the transmission gear position holding mechanism K.
- the rotational axis A2 is set at the position of the roller 4 which is biased by a set amount (for example, 5 mm) on the opposite side to the main shaft 1 along the axis-to-center perpendicular ⁇ .
- the roller 4 is separated from the disk-shaped material W supported by the material support portion 3 in a direction along the axis-centered perpendicular ⁇ .
- the end position Pe is set at a predetermined position on the outer peripheral surface of the disk-shaped material W by pressing the outer tooth forming die 4 m of the roller 4 in a rotating state against the outer peripheral surface of the disk-shaped material W.
- This is a position where the height external teeth Wo can be molded.
- the rotation axis A4 of the transmission gear 9 whose position is held in a state of being meshed with the synchronous gear 8 by the transmission gear position holding mechanism K and the roller in which the rotation axis A2 is in the same position on the axis center perpendicular line ⁇ . 4 is set. That is, as shown in FIGS.
- the transmission gear 9 is held in a state in which the position of the transmission gear 9 is engaged with the synchronous gear 8 by the transmission gear holding hydraulic cylinder 29 before the manufacturing of the gear is started.
- the control unit 7 operates the X-direction drive device 26 to position the roller 4 at the start position Ps, and operates the work supply device (not shown). Then, the disk-shaped material W to be processed is positioned at a position facing the material support portion 3, and the work holding hydraulic cylinder 6 is operated to move the pressing member 5 in the -Z direction as shown in FIG.
- a work holding process (corresponding to the material holding process) for holding the disk-shaped material W between the material support portion 3 and the pressing member 5 is executed. Then, the disc-shaped material W is sandwiched between the material support portion 3 (specifically, the main body portion 3b) and the pressing member 5 in a state where the insertion shaft portion 3a of the material support portion 3 is inserted into the shaft hole Wh.
- the control unit 7 is held in a state where the position of the transmission gear 9 is meshed with the synchronous gear 8, and the disc-shaped material W is moved by the material support unit 3 and the pressing member 5. While being held, the rotation driving device 2 is operated at a predetermined rotation speed. Then, the disk-shaped material W supported by the material support portion 3 rotates integrally with the material support portion 3, and the rotation of the main shaft 1 is synchronously transmitted to the movable shaft 11 by the synchronous gear 8, the transmission gear 9 and the eccentric coupling 10. As a result, the roller 4 rotates in synchronization with the material support 3.
- control unit 7 operates the X-direction drive device 26 to move the roller 4 rotating in synchronization with the material support unit 3 at a predetermined speed along the axis-center perpendicular ⁇ as shown in FIG.
- a process of pressing the disk-shaped material W supported by the material support unit 3 and rotating integrally with the material support unit 3 is performed by moving in the ⁇ X direction.
- the external tooth forming die 4m of the roller 4 in a rotating state comes into contact with the outer peripheral surface of the disk-shaped material W, and external teeth Wo start to be formed on the outer peripheral surface of the disk-shaped material W.
- the height of the tooth Wo gradually increases.
- the roller 4 reaches the end position Pe, the height of the external teeth Wo formed on the outer peripheral surface of the disk-shaped material W reaches a predetermined height, and the disk-shaped material W
- the control unit 7 operates the X-direction drive device 26 to return the roller 4 to the start position Ps, then stops the rotation drive device 2, and then moves the work holding hydraulic cylinder 6 to its cylinder rod.
- the workpiece discharging device (not shown) is operated to remove the manufactured gear from the material support portion 3.
- control unit 7 operates the workpiece holding mechanism H to execute a material holding step of clamping the disc-shaped material W between the material support unit 3 and the pressing member 5, and subsequently operates the pressing mechanism D, In the state where the transmission gear 9 is engaged with the synchronous gear 8 by the transmission gear position holding mechanism K, the processing step of plastic processing the disk-shaped material W by the roller 4 is executed.
- the roller 4 that has already been rotated synchronously with the material support portion 3 is brought close to the disk-shaped material W from a position away from the disk-shaped material W. Since the roller 4 can be pressed against the disk-shaped material W, the transmission gear 9 can be prevented from generating backlash from the beginning when the roller 4 is pressed against the disk-shaped material W, and the processing accuracy of the gear can be improved. Moreover, while using the eccentric coupling 10 that can eccentrically rotate the rotational axis A4 of the transmission gear 9 and the rotational axis A2 of the roller 4, the roller 4 is supported by the eccentric coupling 10 so as to be integrally rotatable.
- the movable shaft 11 is configured to rotate in synchronization with the material support portion 3 in a state where both ends of the movable shaft 11 are supported by the support frame 22 via the movable shaft bearings 21.
- the blurring of the rotational axis A2 can be suppressed, and this also improves the gear machining accuracy.
- FIG. 10 instead of the eccentric coupling 10 of the present invention, rotation using an eccentric coupling 40 that does not include the equivalent of the movable shaft 11 in the eccentric coupling 10 of the present invention, that is, a so-called Schmitt coupling 40 is used.
- the comparative example of a plastic working apparatus is shown.
- the roller 4 is supported by the Schmitt coupling 40 via the driven plate 41 so as to be rotatable in a cantilevered manner. Therefore, the rotation axis A2 of the roller 4 is likely to be shaken. It is difficult to improve the processing accuracy of gears.
- the number of the plurality of driven-side links 15 constituting the driven-side link mechanism Ls and the number of the plurality of driving-side links 16 constituting the driving-side link mechanism Ld are each 4 illustrated in the above embodiment. It is not limited to a book, For example, three may be sufficient. Further, in the above embodiment, one end of each driven side link 15 and one end of each drive side link 16 are pivotally supported on the intermediate plate 13 by a concentric pivot axis a1. It is also possible to pivotally support the intermediate plate 13.
- the length of the roller 4 in the axial direction of the external tooth forming die 4m may be set to be shorter than the length of the external tooth Wo formed in the disk-shaped material W in the axial direction.
- a Z-direction drive device that reciprocates the machining unit U in the Z direction along the rotation axis A1 of the main shaft 1 is provided, and the roller 4 is moved in the Z direction by the Z-direction drive device.
- the external teeth Wo having a desired length longer than the external tooth forming die 4m of the roller 4 can be formed on the disc-shaped material W.
- the transmission gear position holding mechanism K is configured so that the transmission gear 9 (not shown) is connected to the rotation axis A4 of the transmission gear 9 from the axis-center perpendicular ⁇ to the axis center. You may comprise so that it may hold
- the transmission gear position holding mechanism K includes the rotation support frame 28 in addition to the rotation support frame 28 and the transmission gear holding hydraulic cylinder 29 in the above-described embodiment, and the rotation support frame 28 with the axis-center perpendicular ⁇ and the rotation axis A1 of the main shaft 1. And a Y-direction position adjusting unit that adjusts the position in a direction orthogonal to both (ie, the Y direction). Further, the transmission gear holding hydraulic cylinder 29 is provided so that the rotation support frame 28 whose position in the Y direction is adjusted by the Y direction position adjusting portion is moved along the axis-center perpendicular line ⁇ . As shown in FIG.
- FIG. 9 shows a state where the roller 4 is located at the end position Pe.
- the driven plate 12 is driven in the direction of the rotational axis A ⁇ b> 2.
- the straight line (not shown) connecting the pivot axes a1 and a2 on both sides of the side link 15 and the straight line (not shown) connecting the pivot axes a1 and a3 on both sides of the drive side link 16 are maintained in an intersecting state.
- one end of each driven side link 15 and one end of each drive side link 16 are pivotally supported on the intermediate plate 13 by a concentric pivot axis a1.
- It is V-shaped (hereinafter, “the driven side link 15 and the drive side link 16 may be described as V-shaped”).
- the driven side link 15 and the drive side link 16 may be described as V-shaped”.
- the wobbling of the rotation axis A3 of the intermediate plate 13 can be sufficiently suppressed, and accordingly, the rotation axis A2 of the driven plate 12, that is, the rotation axis A2 of the roller 4
- the wobbling of the rotation axis A4 of the drive plate 14, that is, the rotation axis A4 of the transmission gear 9, can be sufficiently suppressed. Therefore, the processing accuracy of the workpiece material W can be effectively improved.
- Teeth that mesh with the synchronous gear 8 may be formed on the outer peripheral surface of the drive plate 14, and the drive plate 14 may also be used as the transmission gear 9.
- the start position Ps and end position Pe of the roller 4 when the disk-shaped material W is formed by moving the roller 4 in the ⁇ X direction can be changed as appropriate.
- the end position Pe is set so that the rotational axis A2 of the roller 4 is at the same position as the rotational axis A4 of the transmission gear 9 on the vertical axis ⁇ .
- the rotational axis A2 may be set to be different from the rotational axis A4 of the transmission gear 9 on the vertical axis ⁇ between the axes.
- the form in which the work material is plastically processed is not limited to the form in which the outer teeth Wo are formed on the outer peripheral surface as in the above-described embodiment, and, for example, along the axis of the work material.
- the concave and convex portions may be formed at a constant pitch.
- a specific example of the material to be processed is not limited to the disk-shaped material W as exemplified in the above embodiment.
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Abstract
Provided is a rotational-plasticity forming device capable of improving plasticity-forming accuracy. This synchronous rotational structure (S) is equipped with a: a synchronous gear (8) for integrally rotating with a material-support unit (3); a transmission gear (9) positioned so as to engage the synchronous gear (8); an eccentric coupling (10); and a transmission-gear-position-holding mechanism (K) for holding the position of the transmission gear (9) in a state of engagement with the synchronous gear (8). In the eccentric coupling (10), a drive plate (14) is connected concentrically to the transmission gear (9) so as to be integrally rotatable, and the end of a movable shaft (11) penetrating the drive plate (14) is connected concentrically to a roller (4) so as to be integrally rotatable. The eccentric coupling (10) is provided so as to support the movable shaft (11) in parallel with a principal shaft (1) and in a manner such that both ends of the movable shaft (11) are rotatable in bearings (21). A pressing mechanism (D) is provided so as to move the movable shaft (11) along an interaxial perpendicular line (α) which connects the rotational axis (A2) of the movable shaft (11) and the rotational axis (A1) of the principal shaft (1).
Description
本発明は、軸心方向視で円状の外周面を有する被加工素材を支持する状態で、主軸周りに回転駆動手段により回転駆動される素材支持部と、被加工素材を塑性加工するローラを主軸に直交する方向に移動して当該ローラを被加工素材に押し付ける押し付け機構と、ローラを素材支持部と同期回転させるように、主軸の回転をローラに伝達する同期回転機構とが設けられた回転塑性加工装置に関する。
The present invention includes a material support portion that is rotationally driven by a rotational drive means around a main shaft and a roller that plastically processes the material to be processed while supporting a material to be processed having a circular outer peripheral surface as viewed in the axial direction. Rotation provided with a pressing mechanism that moves in a direction perpendicular to the main shaft and presses the roller against the workpiece, and a synchronous rotation mechanism that transmits the rotation of the main shaft to the roller so as to rotate the roller synchronously with the material support. The present invention relates to a plastic working apparatus.
かかる回転塑性加工装置は、被加工素材を支持した素材支持部を回転駆動し、並びに、同期回転機構によってローラを素材支持部と同期回転させる状態で、押し付け機構によりローラを被加工素材に押し付けることにより、被加工素材を塑性加工するものである。例えば、外歯を有する歯車を製造する場合は、ローラとして、外周面に外歯成形型が備えられたものを用いて、被加工素材の一例である円盤状素材の外周面に外歯を成形する。
Such a rotary plastic working apparatus rotates the material support part that supports the work material, and presses the roller against the work material by the pressing mechanism in a state in which the roller rotates synchronously with the material support part by the synchronous rotation mechanism. Thus, the workpiece material is plastically processed. For example, when manufacturing a gear having external teeth, the external teeth are formed on the outer peripheral surface of a disk-shaped material, which is an example of a material to be processed, using a roller having an outer tooth forming die on the outer peripheral surface. To do.
このような回転塑性加工装置において、従来は、同期回転機構として、素材支持部と共に回転する同期ギアと、ローラと共に回転し且つ同期ギアに噛み合わせ可能な従動ギアと、ローラ及び従動ギアを主軸と直交する方向に一体的に移動させて、従動ギアを同期ギアに噛み合わせると共にその噛み合わせと同時にローラを被加工素材に押し付ける押し付け機構とを備えて構成していた(例えば、特許文献1参照。)。
そして、押し付け機構を働かせることにより、被加工素材を塑性加工していた。 In such a rotary plastic working apparatus, conventionally, as a synchronous rotation mechanism, a synchronous gear that rotates together with the material support portion, a driven gear that rotates together with the roller and meshes with the synchronous gear, and the roller and the driven gear as the main shaft. It is configured to include a pressing mechanism that integrally moves in the orthogonal direction to engage the driven gear with the synchronous gear and simultaneously presses the roller against the workpiece (see, for example, Patent Document 1). ).
And the workpiece material was plastically processed by making the pressing mechanism work.
そして、押し付け機構を働かせることにより、被加工素材を塑性加工していた。 In such a rotary plastic working apparatus, conventionally, as a synchronous rotation mechanism, a synchronous gear that rotates together with the material support portion, a driven gear that rotates together with the roller and meshes with the synchronous gear, and the roller and the driven gear as the main shaft. It is configured to include a pressing mechanism that integrally moves in the orthogonal direction to engage the driven gear with the synchronous gear and simultaneously presses the roller against the workpiece (see, for example, Patent Document 1). ).
And the workpiece material was plastically processed by making the pressing mechanism work.
ところで、ローラを的確に素材支持部と同期回転させるには、従動ギアを同期ギアに十分に深く噛み合わせて、同期ギアの回転を従動ギアに的確に伝達する必要がある。
しかしながら、従来の回転塑性加工装置では、ローラ及び従動ギアを主軸と直交する方向に一体的に移動させる構成であるため、ローラが被加工素材に接触してから、加工が完了する位置まで移動する間に従動ギアも同様に移動することになり、加工当初は従動ギアと同期ギアが深く噛み合わずに、バックラッシが生じてしまい、結果、被加工素材を塑性加工する加工精度が悪くなる虞があった。 By the way, in order to accurately rotate the roller synchronously with the material support portion, it is necessary to mesh the driven gear sufficiently deeply with the synchronous gear and accurately transmit the rotation of the synchronous gear to the driven gear.
However, in the conventional rotary plastic processing apparatus, since the roller and the driven gear are integrally moved in a direction orthogonal to the main shaft, the roller moves to a position where the processing is completed after contacting the workpiece. The driven gear also moves in the same manner, and the driven gear and the synchronous gear do not mesh deeply at the beginning of processing, resulting in backlash, and as a result, the processing accuracy for plastic processing of the workpiece may be deteriorated. It was.
しかしながら、従来の回転塑性加工装置では、ローラ及び従動ギアを主軸と直交する方向に一体的に移動させる構成であるため、ローラが被加工素材に接触してから、加工が完了する位置まで移動する間に従動ギアも同様に移動することになり、加工当初は従動ギアと同期ギアが深く噛み合わずに、バックラッシが生じてしまい、結果、被加工素材を塑性加工する加工精度が悪くなる虞があった。 By the way, in order to accurately rotate the roller synchronously with the material support portion, it is necessary to mesh the driven gear sufficiently deeply with the synchronous gear and accurately transmit the rotation of the synchronous gear to the driven gear.
However, in the conventional rotary plastic processing apparatus, since the roller and the driven gear are integrally moved in a direction orthogonal to the main shaft, the roller moves to a position where the processing is completed after contacting the workpiece. The driven gear also moves in the same manner, and the driven gear and the synchronous gear do not mesh deeply at the beginning of processing, resulting in backlash, and as a result, the processing accuracy for plastic processing of the workpiece may be deteriorated. It was.
そこで、このような問題を解消するために、図10に示すように、所謂、偏心カップリング40を用いる比較例が想定される。尚、図10は、偏心カップリング40を用いた場合の回転塑性加工装置の比較例を示し、図10(a)は、回転塑性加工装置における偏心カップリング40の周辺の正面図であり、図10(b)は、横断平面図である。
Therefore, in order to solve such a problem, a comparative example using a so-called eccentric coupling 40 is assumed as shown in FIG. FIG. 10 shows a comparative example of the rotary plastic working apparatus when the eccentric coupling 40 is used, and FIG. 10 (a) is a front view of the periphery of the eccentric coupling 40 in the rotary plastic working apparatus. 10 (b) is a transverse plan view.
図10に示すように、偏心カップリング40は、リング状の従動プレート41、回転軸心A3が従動プレート41の回転軸心A2と偏心し且つ従動プレート41に回転を伝達可能に複数(例えば3本)の従動側リンク44により従動プレート41に連結されたリング状の中間プレート42、及び、回転軸心A4が中間プレート42の回転軸心A3と偏心し且つ中間プレート42に回転を伝達可能に複数(例えば3本)の駆動側リンク45により中間プレート42に連結されたリング状の駆動プレート43を備えて構成されている。
As shown in FIG. 10, the eccentric coupling 40 includes a plurality of ring-shaped driven plates 41 and a rotation axis A3 that is eccentric to the rotation axis A2 of the driven plate 41 and that can transmit rotation to the driven plate 41 (for example, 3 The ring-shaped intermediate plate 42 connected to the driven plate 41 by the driven side link 44 and the rotational axis A4 are eccentric from the rotational axis A3 of the intermediate plate 42, and the rotation can be transmitted to the intermediate plate 42. A ring-shaped drive plate 43 connected to the intermediate plate 42 by a plurality of (for example, three) drive-side links 45 is provided.
複数の従動側リンク44は、互いに平行になる状態で、従動プレート41の回転軸心A2周りに分散配置され、複数の駆動側リンク45も、互いに平行になる状態で、駆動プレート43の回転軸心A4周りに分散配置されている。各従動側リンク44の一端及び各駆動側リンク45の一端は、同心の枢支軸心にて中間プレート42に枢支され、各従動側リンク44の他端は従動プレート41に枢支され、並びに、各駆動側リンク45の他端は駆動プレート43に枢支されている。複数の従動側リンク44夫々における両側の枢支軸心間の間隔、及び、複数の駆動側リンク45夫々における両側の枢支軸心間の間隔は、全て同一である。つまり、この偏心カップリング40は、所謂、シュミットカップリングであり、駆動プレート43の回転が中間プレート42を介して従動プレート41に同期伝達可能で、且つ、駆動プレート43の回転軸心A4と従動プレート41の回転軸心A2とが偏心可能に構成されている。
そして、駆動プレート43における中間プレート42の側とは反対側に、伝達ギア9が回転軸心A4にて同心状で一体回転可能に連結され、従動プレート41における中間プレート42の側とは反対側に、ローラ4が可動軸46を介して回転軸心A2にて同心状で一体回転可能に連結されている。
つまり、伝達ギア9の回転軸心A4は、ローラ4の回転軸心A2と偏心可能である。 The plurality of drivenside links 44 are dispersedly arranged around the rotation axis A2 of the driven plate 41 in a state of being parallel to each other, and the plurality of driving side links 45 are also in a state of being parallel to each other. Distributed around the center A4. One end of each driven side link 44 and one end of each drive side link 45 are pivotally supported by the intermediate plate 42 at a concentric pivot axis, and the other end of each driven side link 44 is pivotally supported by the driven plate 41. In addition, the other end of each drive side link 45 is pivotally supported by the drive plate 43. The distance between the pivot axes on both sides in each of the plurality of driven links 44 and the distance between the pivot axes on both sides in each of the plurality of drive links 45 are all the same. That is, the eccentric coupling 40 is a so-called Schmidt coupling, and the rotation of the drive plate 43 can be transmitted synchronously to the driven plate 41 via the intermediate plate 42 and is also driven by the rotational axis A4 of the drive plate 43. The rotation axis A2 of the plate 41 is configured to be eccentric.
Thetransmission gear 9 is concentrically connected to the drive plate 43 on the opposite side to the intermediate plate 42 side so as to rotate integrally therewith, and the driven plate 41 is opposite to the intermediate plate 42 side. In addition, the roller 4 is concentrically connected to the rotation axis A2 via the movable shaft 46 so as to be integrally rotatable.
That is, the rotational axis A4 of thetransmission gear 9 can be eccentric with the rotational axis A2 of the roller 4.
そして、駆動プレート43における中間プレート42の側とは反対側に、伝達ギア9が回転軸心A4にて同心状で一体回転可能に連結され、従動プレート41における中間プレート42の側とは反対側に、ローラ4が可動軸46を介して回転軸心A2にて同心状で一体回転可能に連結されている。
つまり、伝達ギア9の回転軸心A4は、ローラ4の回転軸心A2と偏心可能である。 The plurality of driven
The
That is, the rotational axis A4 of the
そして、油圧シリンダ(図示省略)等により、駆動プレート43を主軸(図示省略)側に押圧して、伝達ギア9を、主軸周りに素材支持部(図示省略)と一体回転する同期ギア(図示省略)に噛み合わせた状態で、押し付け機構(図示省略)により、ローラ4を主軸に直交する方向に移動してローラ4を被加工素材(図示省略)に押し付けることにより、被加工素材を塑性加工する。
つまり、伝達ギア9を同期ギア(図示省略)に十分に深く噛み合わせた状態で、既に素材支持部と同期回転しているローラ4を、被加工素材から離間した位置から被加工素材に近づけて被加工素材に押し付けることができるので、ローラ4が被加工素材に押し付けられる当初から、伝達ギア9にバックラッシが生じないようにすることができる。
しかしながら、この比較例の場合、ローラ4は、従動プレート41を介して偏心カップリング40に片持ち状に支持されており、ローラ4に対してその回転軸心A2に直交する方向に力が作用した場合、片持ちによる根元の曲げモーメントは従動側リンク44に直接作用することになる。この曲げモーメントはさらに駆動側リンク45を介して駆動プレート43に伝達されるため、従動側リンク44と駆動側リンク45の2面のリンク部では、大きな撓み角が発生し同調回転が不安定となり、被加工素材の加工精度を低下させる。更には、リンク結合の耐力を超える曲げモーメントが発生することにより、偏心カップリング40の損傷につながる虞がある。 Then, thedrive plate 43 is pressed toward the main shaft (not shown) by a hydraulic cylinder (not shown) or the like, and the transmission gear 9 is rotated synchronously with the material support portion (not shown) around the main shaft (not shown). ), The workpiece 4 is plastically processed by moving the roller 4 in a direction orthogonal to the main shaft by pressing the roller 4 against the workpiece (not shown) by a pressing mechanism (not shown). .
That is, with thetransmission gear 9 meshed sufficiently deeply with a synchronous gear (not shown), the roller 4 that has already been rotated synchronously with the material support portion is moved closer to the workpiece material from a position away from the workpiece material. Since it can be pressed against the workpiece, it is possible to prevent backlash from occurring in the transmission gear 9 from the beginning when the roller 4 is pressed against the workpiece.
However, in this comparative example, theroller 4 is supported in a cantilever manner by the eccentric coupling 40 via the driven plate 41, and a force acts on the roller 4 in a direction perpendicular to the rotational axis A2. In this case, the bending moment at the base due to the cantilever directly acts on the driven side link 44. Since this bending moment is further transmitted to the drive plate 43 via the drive side link 45, a large deflection angle is generated at the two link portions of the driven side link 44 and the drive side link 45, and the synchronized rotation becomes unstable. , Reduce the processing accuracy of the workpiece material. Furthermore, if a bending moment exceeding the proof strength of the link connection is generated, the eccentric coupling 40 may be damaged.
つまり、伝達ギア9を同期ギア(図示省略)に十分に深く噛み合わせた状態で、既に素材支持部と同期回転しているローラ4を、被加工素材から離間した位置から被加工素材に近づけて被加工素材に押し付けることができるので、ローラ4が被加工素材に押し付けられる当初から、伝達ギア9にバックラッシが生じないようにすることができる。
しかしながら、この比較例の場合、ローラ4は、従動プレート41を介して偏心カップリング40に片持ち状に支持されており、ローラ4に対してその回転軸心A2に直交する方向に力が作用した場合、片持ちによる根元の曲げモーメントは従動側リンク44に直接作用することになる。この曲げモーメントはさらに駆動側リンク45を介して駆動プレート43に伝達されるため、従動側リンク44と駆動側リンク45の2面のリンク部では、大きな撓み角が発生し同調回転が不安定となり、被加工素材の加工精度を低下させる。更には、リンク結合の耐力を超える曲げモーメントが発生することにより、偏心カップリング40の損傷につながる虞がある。 Then, the
That is, with the
However, in this comparative example, the
本発明は、かかる実情に鑑みてなされたものであり、その目的は、加工精度を向上し得る回転塑性加工装置を提供することにある。
The present invention has been made in view of such circumstances, and an object thereof is to provide a rotary plastic processing apparatus capable of improving the processing accuracy.
上記目的を達成するための本発明に係る回転塑性加工装置は、軸心方向視で円状の外周面を有する被加工素材を支持する状態で、主軸周りに回転駆動手段により回転駆動される素材支持部と、被加工素材を塑性加工するローラを前記主軸に直交する方向に移動して当該ローラを被加工素材に押し付ける押し付け機構と、前記ローラを前記素材支持部と同期回転させるように、前記主軸の回転を前記ローラに伝達する同期回転機構とが設けられた回転塑性加工装置であって、その特徴構成は、
前記同期回転機構が、
前記主軸周りに前記素材支持部と一体回転する同期ギアと、
当該同期ギアに噛み合う状態で配設された伝達ギアと、
可動軸に一体回転可能に連結された従動プレート、前記可動軸の外周部に配設されると共に、回転軸心が前記可動軸と偏心し且つ前記従動プレートに回転を伝達可能に従動側リンク機構により前記従動プレートに連結された内径が前記可動軸よりも大径の中間プレート、及び、前記可動軸の外周部に配設されると共に、回転軸心が前記可動軸と偏心し且つ前記中間プレートに回転を伝達可能に駆動側リンク機構により前記中間プレートに連結された内径が前記可動軸よりも大径の駆動プレートを備えた偏心カップリングと、
前記伝達ギアの位置を、前記同期ギアに噛み合わせた状態で保持する伝達ギア位置保持機構とを備えて構成され、
前記偏心カップリングにおいて、前記駆動プレートが前記伝達ギアに同心状で一体回転可能に連結され、且つ、前記可動軸における前記駆動プレートを貫通した端部が前記ローラに同心状で一体回転可能に連結されて、当該偏心カップリングが、前記可動軸を前記主軸に平行にした姿勢で当該可動軸の両端を軸受にて回転可能に支持した状態で設けられ、
前記押し付け機構が、前記可動軸を当該可動軸の回転軸心と前記主軸の回転軸心とを結ぶ軸心間垂線に沿って移動するように設けられている点にある。 In order to achieve the above object, a rotary plastic working apparatus according to the present invention is a material that is rotationally driven by a rotational drive means around a main shaft in a state of supporting a work material having a circular outer peripheral surface as viewed in the axial direction. A support unit, a pressing mechanism for plastically processing a workpiece material in a direction perpendicular to the main shaft, and pressing the roller against the workpiece material; and the roller to rotate synchronously with the material support unit, A rotary plastic working apparatus provided with a synchronous rotation mechanism for transmitting the rotation of the main shaft to the roller, the characteristic configuration is
The synchronous rotation mechanism is
A synchronous gear that rotates integrally with the material support around the main shaft;
A transmission gear arranged in mesh with the synchronous gear;
A driven plate coupled to the movable shaft so as to be integrally rotatable, and disposed on an outer peripheral portion of the movable shaft, and a driven side link mechanism in which the rotational axis is eccentric from the movable shaft and the rotation can be transmitted to the driven plate And an intermediate plate having an inner diameter coupled to the driven plate having a larger diameter than the movable shaft, and an outer peripheral portion of the movable shaft, and a rotational axis is eccentric from the movable shaft and the intermediate plate An eccentric coupling provided with a drive plate having an inner diameter coupled to the intermediate plate by a drive side link mechanism so that rotation can be transmitted to the movable shaft;
A transmission gear position holding mechanism that holds the position of the transmission gear in a state of meshing with the synchronous gear;
In the eccentric coupling, the drive plate is concentrically connected to the transmission gear so as to be integrally rotatable, and an end portion of the movable shaft passing through the drive plate is concentrically connected to the roller so as to be integrally rotatable. The eccentric coupling is provided in a state in which both ends of the movable shaft are rotatably supported by bearings in a posture in which the movable shaft is parallel to the main shaft,
The pressing mechanism is provided so as to move the movable shaft along an axis-to-center perpendicular connecting the rotation axis of the movable shaft and the rotation axis of the main shaft.
前記同期回転機構が、
前記主軸周りに前記素材支持部と一体回転する同期ギアと、
当該同期ギアに噛み合う状態で配設された伝達ギアと、
可動軸に一体回転可能に連結された従動プレート、前記可動軸の外周部に配設されると共に、回転軸心が前記可動軸と偏心し且つ前記従動プレートに回転を伝達可能に従動側リンク機構により前記従動プレートに連結された内径が前記可動軸よりも大径の中間プレート、及び、前記可動軸の外周部に配設されると共に、回転軸心が前記可動軸と偏心し且つ前記中間プレートに回転を伝達可能に駆動側リンク機構により前記中間プレートに連結された内径が前記可動軸よりも大径の駆動プレートを備えた偏心カップリングと、
前記伝達ギアの位置を、前記同期ギアに噛み合わせた状態で保持する伝達ギア位置保持機構とを備えて構成され、
前記偏心カップリングにおいて、前記駆動プレートが前記伝達ギアに同心状で一体回転可能に連結され、且つ、前記可動軸における前記駆動プレートを貫通した端部が前記ローラに同心状で一体回転可能に連結されて、当該偏心カップリングが、前記可動軸を前記主軸に平行にした姿勢で当該可動軸の両端を軸受にて回転可能に支持した状態で設けられ、
前記押し付け機構が、前記可動軸を当該可動軸の回転軸心と前記主軸の回転軸心とを結ぶ軸心間垂線に沿って移動するように設けられている点にある。 In order to achieve the above object, a rotary plastic working apparatus according to the present invention is a material that is rotationally driven by a rotational drive means around a main shaft in a state of supporting a work material having a circular outer peripheral surface as viewed in the axial direction. A support unit, a pressing mechanism for plastically processing a workpiece material in a direction perpendicular to the main shaft, and pressing the roller against the workpiece material; and the roller to rotate synchronously with the material support unit, A rotary plastic working apparatus provided with a synchronous rotation mechanism for transmitting the rotation of the main shaft to the roller, the characteristic configuration is
The synchronous rotation mechanism is
A synchronous gear that rotates integrally with the material support around the main shaft;
A transmission gear arranged in mesh with the synchronous gear;
A driven plate coupled to the movable shaft so as to be integrally rotatable, and disposed on an outer peripheral portion of the movable shaft, and a driven side link mechanism in which the rotational axis is eccentric from the movable shaft and the rotation can be transmitted to the driven plate And an intermediate plate having an inner diameter coupled to the driven plate having a larger diameter than the movable shaft, and an outer peripheral portion of the movable shaft, and a rotational axis is eccentric from the movable shaft and the intermediate plate An eccentric coupling provided with a drive plate having an inner diameter coupled to the intermediate plate by a drive side link mechanism so that rotation can be transmitted to the movable shaft;
A transmission gear position holding mechanism that holds the position of the transmission gear in a state of meshing with the synchronous gear;
In the eccentric coupling, the drive plate is concentrically connected to the transmission gear so as to be integrally rotatable, and an end portion of the movable shaft passing through the drive plate is concentrically connected to the roller so as to be integrally rotatable. The eccentric coupling is provided in a state in which both ends of the movable shaft are rotatably supported by bearings in a posture in which the movable shaft is parallel to the main shaft,
The pressing mechanism is provided so as to move the movable shaft along an axis-to-center perpendicular connecting the rotation axis of the movable shaft and the rotation axis of the main shaft.
上記特徴構成によれば、伝達ギア位置保持機構により、伝達ギアの位置が同期ギアに噛み合わされた状態で位置保持されるので、素材支持部の回転が同期ギアを介して伝達ギアに同期伝達されて、伝達ギアが素材支持部と同期回転する。そして、その伝達ギアと共に駆動プレートが一体回転し、その駆動プレートの回転が、駆動側リンク機構、中間プレート、従動側リンク機構を介して従動プレートに同期伝達されるので、その従動プレート及びローラを同心状で一体回転可能に支持した可動軸が、その回転軸心が駆動プレート(即ち、伝達ギア)の回転軸心と偏心可能な状態で、且つ、その両端が軸受にて支持された状態で素材支持部と同期回転する。
そして、可動軸の回転軸心は伝達ギアの回転軸心と偏心可能であるので、素材支持部と同期回転する伝達ギアの回転軸心が一定の位置に保持された状態で、押し付け機構により、素材支持部と同期回転する可動軸を軸心間垂線に沿って主軸に向けて移動することができる。
つまり、伝達ギアを同期ギアに十分に深く噛み合わせた状態で、既に素材支持部と同期回転しているローラを、被加工素材から離間した位置から被加工素材に近づけて被加工素材に押し付けることができるので、ローラが被加工素材に押し付けられる当初から、伝達ギアにバックラッシが生じないようにすることができて、被加工素材の加工精度を向上することができる。
しかも、伝達ギアの回転軸心とローラの回転軸心とを偏心可能な偏心カップリングを用いながらも、ローラと一体回転可能な可動軸の両端が軸受を介して支持部材により支持されていることにより、回転力については、伝達ギアから、駆動プレート、中間プレート、従動プレートを介して、ローラにバックラッシの発生がほとんど無い状態で伝達され、ローラの回転軸心に直交する方向に作用する力については、可動軸を介してせん断力として支持部材に直接、伝達される合理的な構造を実現している。これにより、曲げ耐力については、脆弱なリンク結合部分に直接、伝達される曲げモーメントは微少となり、同期回転機構そのものの耐力が向上すると共に、ローラの回転軸心の面外変位が小さくなり、被加工素材の加工精度の向上につながる。
従って、加工精度を向上し得る回転塑性加工装置を提供することができる。 According to the above characteristic configuration, the position of the transmission gear is held in a state where the transmission gear is engaged with the synchronous gear by the transmission gear position holding mechanism, so that the rotation of the material support portion is synchronously transmitted to the transmission gear via the synchronous gear. Thus, the transmission gear rotates in synchronization with the material support portion. The drive plate rotates together with the transmission gear, and the rotation of the drive plate is synchronously transmitted to the driven plate via the drive side link mechanism, the intermediate plate, and the driven side link mechanism. The movable shaft that is concentrically supported so as to be integrally rotatable is in a state in which the rotational shaft center can be eccentric with the rotational shaft center of the drive plate (that is, transmission gear) and both ends thereof are supported by bearings. Rotates synchronously with the material support.
And since the rotation shaft center of the movable shaft can be eccentric with the rotation shaft center of the transmission gear, the rotation shaft center of the transmission gear rotating in synchronization with the material support portion is held at a fixed position by the pressing mechanism, A movable shaft that rotates synchronously with the material support portion can be moved toward the main shaft along the axis-center perpendicular.
In other words, with the transmission gear meshed with the synchronous gear sufficiently deeply, the roller that is already rotating synchronously with the material support part is pressed against the work material from a position away from the work material, against the work material. Therefore, it is possible to prevent the transmission gear from causing backlash from the beginning when the roller is pressed against the workpiece material, and the processing accuracy of the workpiece material can be improved.
In addition, both ends of the movable shaft that can rotate integrally with the roller are supported by the support member through the bearing while using the eccentric coupling that can eccentrically rotate the rotation shaft center of the transmission gear and the rotation shaft center of the roller. Thus, the rotational force is transmitted from the transmission gear through the drive plate, intermediate plate, and driven plate with almost no backlash generated on the roller, and the force acting in the direction perpendicular to the rotational axis of the roller. Realizes a rational structure that is transmitted directly to the support member as a shearing force via the movable shaft. As a result, regarding bending strength, the bending moment transmitted directly to the fragile link coupling portion is very small, the strength of the synchronous rotation mechanism itself is improved, and the out-of-plane displacement of the roller rotation axis is reduced, resulting in a This leads to improved processing accuracy of the processed material.
Accordingly, it is possible to provide a rotary plastic processing apparatus that can improve the processing accuracy.
そして、可動軸の回転軸心は伝達ギアの回転軸心と偏心可能であるので、素材支持部と同期回転する伝達ギアの回転軸心が一定の位置に保持された状態で、押し付け機構により、素材支持部と同期回転する可動軸を軸心間垂線に沿って主軸に向けて移動することができる。
つまり、伝達ギアを同期ギアに十分に深く噛み合わせた状態で、既に素材支持部と同期回転しているローラを、被加工素材から離間した位置から被加工素材に近づけて被加工素材に押し付けることができるので、ローラが被加工素材に押し付けられる当初から、伝達ギアにバックラッシが生じないようにすることができて、被加工素材の加工精度を向上することができる。
しかも、伝達ギアの回転軸心とローラの回転軸心とを偏心可能な偏心カップリングを用いながらも、ローラと一体回転可能な可動軸の両端が軸受を介して支持部材により支持されていることにより、回転力については、伝達ギアから、駆動プレート、中間プレート、従動プレートを介して、ローラにバックラッシの発生がほとんど無い状態で伝達され、ローラの回転軸心に直交する方向に作用する力については、可動軸を介してせん断力として支持部材に直接、伝達される合理的な構造を実現している。これにより、曲げ耐力については、脆弱なリンク結合部分に直接、伝達される曲げモーメントは微少となり、同期回転機構そのものの耐力が向上すると共に、ローラの回転軸心の面外変位が小さくなり、被加工素材の加工精度の向上につながる。
従って、加工精度を向上し得る回転塑性加工装置を提供することができる。 According to the above characteristic configuration, the position of the transmission gear is held in a state where the transmission gear is engaged with the synchronous gear by the transmission gear position holding mechanism, so that the rotation of the material support portion is synchronously transmitted to the transmission gear via the synchronous gear. Thus, the transmission gear rotates in synchronization with the material support portion. The drive plate rotates together with the transmission gear, and the rotation of the drive plate is synchronously transmitted to the driven plate via the drive side link mechanism, the intermediate plate, and the driven side link mechanism. The movable shaft that is concentrically supported so as to be integrally rotatable is in a state in which the rotational shaft center can be eccentric with the rotational shaft center of the drive plate (that is, transmission gear) and both ends thereof are supported by bearings. Rotates synchronously with the material support.
And since the rotation shaft center of the movable shaft can be eccentric with the rotation shaft center of the transmission gear, the rotation shaft center of the transmission gear rotating in synchronization with the material support portion is held at a fixed position by the pressing mechanism, A movable shaft that rotates synchronously with the material support portion can be moved toward the main shaft along the axis-center perpendicular.
In other words, with the transmission gear meshed with the synchronous gear sufficiently deeply, the roller that is already rotating synchronously with the material support part is pressed against the work material from a position away from the work material, against the work material. Therefore, it is possible to prevent the transmission gear from causing backlash from the beginning when the roller is pressed against the workpiece material, and the processing accuracy of the workpiece material can be improved.
In addition, both ends of the movable shaft that can rotate integrally with the roller are supported by the support member through the bearing while using the eccentric coupling that can eccentrically rotate the rotation shaft center of the transmission gear and the rotation shaft center of the roller. Thus, the rotational force is transmitted from the transmission gear through the drive plate, intermediate plate, and driven plate with almost no backlash generated on the roller, and the force acting in the direction perpendicular to the rotational axis of the roller. Realizes a rational structure that is transmitted directly to the support member as a shearing force via the movable shaft. As a result, regarding bending strength, the bending moment transmitted directly to the fragile link coupling portion is very small, the strength of the synchronous rotation mechanism itself is improved, and the out-of-plane displacement of the roller rotation axis is reduced, resulting in a This leads to improved processing accuracy of the processed material.
Accordingly, it is possible to provide a rotary plastic processing apparatus that can improve the processing accuracy.
本発明に係る回転塑性加工装置の更なる特徴構成は、前記偏心カップリングにおいて、前記従動側リンク機構が、一端が前記中間プレートに枢支され且つ他端が前記従動プレートに枢支された複数の従動側リンクを備えて構成されて、それら複数の従動側リンクが互いに平行になる状態で前記可動軸の周方向に分散配置され、前記駆動側リンク機構が、一端が前記中間プレートに枢支され且つ他端が前記駆動プレートに枢支された複数の駆動側リンクを備えて構成されて、それら複数の駆動側リンクが互いに平行になる状態で前記可動軸の周方向に分散配置され、
前記伝達ギア位置保持機構が、前記伝達ギアを、当該伝達ギアの回転軸心を前記軸心間垂線から当該軸心間垂線に直交する方向に設定量偏倚させた位置にて、前記同期ギアに噛み合わせた状態で保持するように構成されている点にある。 The rotary plastic working apparatus according to the present invention is further characterized in that, in the eccentric coupling, the driven side link mechanism includes a plurality of one end pivotally supported by the intermediate plate and the other end pivotally supported by the driven plate. The plurality of driven side links are distributed in the circumferential direction of the movable shaft in a state in which the plurality of driven side links are parallel to each other, and the drive side link mechanism is pivotally supported at one end by the intermediate plate. And the other end is configured to include a plurality of drive-side links pivotally supported by the drive plate, and the plurality of drive-side links are distributed and arranged in the circumferential direction of the movable shaft in a state of being parallel to each other,
The transmission gear position holding mechanism moves the transmission gear to the synchronous gear at a position where the rotational axis of the transmission gear is biased by a set amount in a direction perpendicular to the axis-centered perpendicular from the axis-centered perpendicular. It is in the point comprised so that it may hold | maintain in the state engaged.
前記伝達ギア位置保持機構が、前記伝達ギアを、当該伝達ギアの回転軸心を前記軸心間垂線から当該軸心間垂線に直交する方向に設定量偏倚させた位置にて、前記同期ギアに噛み合わせた状態で保持するように構成されている点にある。 The rotary plastic working apparatus according to the present invention is further characterized in that, in the eccentric coupling, the driven side link mechanism includes a plurality of one end pivotally supported by the intermediate plate and the other end pivotally supported by the driven plate. The plurality of driven side links are distributed in the circumferential direction of the movable shaft in a state in which the plurality of driven side links are parallel to each other, and the drive side link mechanism is pivotally supported at one end by the intermediate plate. And the other end is configured to include a plurality of drive-side links pivotally supported by the drive plate, and the plurality of drive-side links are distributed and arranged in the circumferential direction of the movable shaft in a state of being parallel to each other,
The transmission gear position holding mechanism moves the transmission gear to the synchronous gear at a position where the rotational axis of the transmission gear is biased by a set amount in a direction perpendicular to the axis-centered perpendicular from the axis-centered perpendicular. It is in the point comprised so that it may hold | maintain in the state engaged.
上記特徴構成によれば、伝達ギアが、その回転軸心を軸心間垂線からその軸心間垂線に直交する方向に設定量偏倚させた位置にて同期ギアに噛み合わせた状態で保持されているので、押し付け機構により、既に素材支持部と同期回転している可動軸が軸心間垂線に沿って主軸に向けて移動される間中、伝達ギアと同心状で一体回転する駆動プレートの回転軸心と可動軸と同心状で一体回転する従動プレートの回転軸心とが軸心間垂線に直交する方向に離間する状態に維持される。
そして、駆動プレートの回転軸心と従動プレートの回転軸心とが軸心間垂線に直交する方向に離間する状態では、従動プレートの回転軸心方向視において、従動側リンクの両側の枢支軸心を結ぶ直線と駆動側リンクの両側の枢支軸心を結ぶ直線とが交差する状態(以下、「従動側リンクの長手方向と駆動側リンクの長手方向が交差する状態」と記載する場合がある)となる。
従って、素材支持部と同期回転するローラを、被加工素材から離間する位置から被加工素材に近づけて被加工素材に押し付けて加工を終了するまでの間中、従動側リンクの長手方向と駆動側リンクの長手方向が交差する状態に維持することができる。
そして、従動側リンクの長手方向と駆動側リンクの長手方向が交差する状態になっていると、中間プレートの回転軸心のふらつきを十分に抑制することができるようになり、それに伴い、従動プレートの回転軸心、即ち、ローラの回転軸心や、駆動プレートの回転軸心、即ち、伝達ギアの回転軸心のふらつきを十分に抑制することができるので、塑性加工精度を一層向上することができる。 According to the above characteristic configuration, the transmission gear is held in a state in which the rotation shaft is meshed with the synchronous gear at a position where the rotation axis is deviated by a set amount in a direction perpendicular to the axis-center perpendicular. Therefore, the rotation of the drive plate that rotates concentrically with the transmission gear while the movable shaft, which is already rotating synchronously with the material support portion, is moved toward the main shaft along the axis-center perpendicular by the pressing mechanism. The shaft center and the rotation axis of the driven plate that rotates concentrically and concentrically with the movable shaft are maintained in a state of being separated in a direction perpendicular to the axis-center perpendicular.
When the rotation axis of the drive plate and the rotation axis of the driven plate are separated from each other in a direction perpendicular to the axis-to-axis perpendicular, the pivot shafts on both sides of the driven side link are viewed in the direction of the rotation axis of the driven plate. The state where the straight line connecting the centers and the straight line connecting the pivot axes on both sides of the drive side link intersect (hereinafter referred to as “the state where the longitudinal direction of the driven side link and the longitudinal direction of the drive side link intersect” may be described). There is).
Therefore, the longitudinal direction of the driven side link and the drive side during the period from when the roller rotating synchronously with the material support unit is pressed to the workpiece material from the position away from the workpiece material and pressed against the workpiece material, It can be maintained in a state where the longitudinal directions of the links intersect.
And, if the longitudinal direction of the driven side link and the longitudinal direction of the driving side link intersect, it becomes possible to sufficiently suppress the wobbling of the rotation axis of the intermediate plate, and accordingly, the driven plate Of the rotation axis of the roller, that is, the rotation axis of the roller and the rotation axis of the drive plate, that is, the rotation axis of the transmission gear, can be sufficiently suppressed. it can.
そして、駆動プレートの回転軸心と従動プレートの回転軸心とが軸心間垂線に直交する方向に離間する状態では、従動プレートの回転軸心方向視において、従動側リンクの両側の枢支軸心を結ぶ直線と駆動側リンクの両側の枢支軸心を結ぶ直線とが交差する状態(以下、「従動側リンクの長手方向と駆動側リンクの長手方向が交差する状態」と記載する場合がある)となる。
従って、素材支持部と同期回転するローラを、被加工素材から離間する位置から被加工素材に近づけて被加工素材に押し付けて加工を終了するまでの間中、従動側リンクの長手方向と駆動側リンクの長手方向が交差する状態に維持することができる。
そして、従動側リンクの長手方向と駆動側リンクの長手方向が交差する状態になっていると、中間プレートの回転軸心のふらつきを十分に抑制することができるようになり、それに伴い、従動プレートの回転軸心、即ち、ローラの回転軸心や、駆動プレートの回転軸心、即ち、伝達ギアの回転軸心のふらつきを十分に抑制することができるので、塑性加工精度を一層向上することができる。 According to the above characteristic configuration, the transmission gear is held in a state in which the rotation shaft is meshed with the synchronous gear at a position where the rotation axis is deviated by a set amount in a direction perpendicular to the axis-center perpendicular. Therefore, the rotation of the drive plate that rotates concentrically with the transmission gear while the movable shaft, which is already rotating synchronously with the material support portion, is moved toward the main shaft along the axis-center perpendicular by the pressing mechanism. The shaft center and the rotation axis of the driven plate that rotates concentrically and concentrically with the movable shaft are maintained in a state of being separated in a direction perpendicular to the axis-center perpendicular.
When the rotation axis of the drive plate and the rotation axis of the driven plate are separated from each other in a direction perpendicular to the axis-to-axis perpendicular, the pivot shafts on both sides of the driven side link are viewed in the direction of the rotation axis of the driven plate. The state where the straight line connecting the centers and the straight line connecting the pivot axes on both sides of the drive side link intersect (hereinafter referred to as “the state where the longitudinal direction of the driven side link and the longitudinal direction of the drive side link intersect” may be described). There is).
Therefore, the longitudinal direction of the driven side link and the drive side during the period from when the roller rotating synchronously with the material support unit is pressed to the workpiece material from the position away from the workpiece material and pressed against the workpiece material, It can be maintained in a state where the longitudinal directions of the links intersect.
And, if the longitudinal direction of the driven side link and the longitudinal direction of the driving side link intersect, it becomes possible to sufficiently suppress the wobbling of the rotation axis of the intermediate plate, and accordingly, the driven plate Of the rotation axis of the roller, that is, the rotation axis of the roller and the rotation axis of the drive plate, that is, the rotation axis of the transmission gear, can be sufficiently suppressed. it can.
一方、伝達ギアの回転軸心を軸心間垂線からその軸心間垂線に直交する方向に偏倚させない場合、素材支持部と同期回転する可動軸が軸心間垂線に沿って主軸に向けて移動される間に、伝達ギアと同心状で一体回転する駆動プレートの回転軸心と可動軸と同心状で一体回転する従動プレートの回転軸心とが同心状になるときがある。
そして、駆動プレートの回転軸心と従動プレートの回転軸心とが同心状になると、従動プレートの回転軸心方向視において、従動側リンクの両側の枢支軸心を結ぶ直線と駆動側リンクの両側の枢支軸心を結ぶ直線とが平行状態(以下、「従動側リンクの長手方向と駆動側リンクの長手方向が平行状態」と記載する場合がある)となる。
従動側リンクの長手方向と駆動側リンクの長手方向が平行状態となると、中間プレートの回転軸心のふらつきを十分に抑制し難くなり、それに伴い、従動プレートの回転軸心、即ち、ローラの回転軸心や、駆動プレートの回転軸心、即ち、伝達ギアの回転軸心のふらつきを十分に抑制し難くなるので、塑性加工精度を十分には向上し難い場合がある。
要するに、本特徴構成によれば、被加工素材の加工精度を更に向上することができる。 On the other hand, if the rotation axis of the transmission gear is not deviated from the axis perpendicular to the direction perpendicular to the axis perpendicular, the movable axis that rotates synchronously with the material support moves along the axis perpendicular to the main axis. In some cases, the rotational axis of the drive plate that rotates concentrically with the transmission gear and the rotational axis of the driven plate that rotates concentrically with the movable shaft are sometimes concentric.
Then, when the rotational axis of the drive plate and the rotational axis of the driven plate are concentric, the straight line connecting the pivot shafts on both sides of the driven side link and the drive side link in the direction of the rotational axis of the driven plate The straight line connecting the pivot axes on both sides is in a parallel state (hereinafter, sometimes referred to as “the longitudinal direction of the driven side link and the longitudinal direction of the drive side link are parallel”).
If the longitudinal direction of the driven side link and the longitudinal direction of the driving side link are in a parallel state, it becomes difficult to sufficiently suppress the fluctuation of the rotation axis of the intermediate plate, and accordingly, the rotation axis of the driven plate, that is, the rotation of the roller. Since it becomes difficult to sufficiently suppress the wobbling of the shaft center and the rotation shaft center of the drive plate, that is, the rotation shaft center of the transmission gear, it may be difficult to sufficiently improve the plastic working accuracy.
In short, according to this characteristic configuration, it is possible to further improve the processing accuracy of the workpiece material.
そして、駆動プレートの回転軸心と従動プレートの回転軸心とが同心状になると、従動プレートの回転軸心方向視において、従動側リンクの両側の枢支軸心を結ぶ直線と駆動側リンクの両側の枢支軸心を結ぶ直線とが平行状態(以下、「従動側リンクの長手方向と駆動側リンクの長手方向が平行状態」と記載する場合がある)となる。
従動側リンクの長手方向と駆動側リンクの長手方向が平行状態となると、中間プレートの回転軸心のふらつきを十分に抑制し難くなり、それに伴い、従動プレートの回転軸心、即ち、ローラの回転軸心や、駆動プレートの回転軸心、即ち、伝達ギアの回転軸心のふらつきを十分に抑制し難くなるので、塑性加工精度を十分には向上し難い場合がある。
要するに、本特徴構成によれば、被加工素材の加工精度を更に向上することができる。 On the other hand, if the rotation axis of the transmission gear is not deviated from the axis perpendicular to the direction perpendicular to the axis perpendicular, the movable axis that rotates synchronously with the material support moves along the axis perpendicular to the main axis. In some cases, the rotational axis of the drive plate that rotates concentrically with the transmission gear and the rotational axis of the driven plate that rotates concentrically with the movable shaft are sometimes concentric.
Then, when the rotational axis of the drive plate and the rotational axis of the driven plate are concentric, the straight line connecting the pivot shafts on both sides of the driven side link and the drive side link in the direction of the rotational axis of the driven plate The straight line connecting the pivot axes on both sides is in a parallel state (hereinafter, sometimes referred to as “the longitudinal direction of the driven side link and the longitudinal direction of the drive side link are parallel”).
If the longitudinal direction of the driven side link and the longitudinal direction of the driving side link are in a parallel state, it becomes difficult to sufficiently suppress the fluctuation of the rotation axis of the intermediate plate, and accordingly, the rotation axis of the driven plate, that is, the rotation of the roller. Since it becomes difficult to sufficiently suppress the wobbling of the shaft center and the rotation shaft center of the drive plate, that is, the rotation shaft center of the transmission gear, it may be difficult to sufficiently improve the plastic working accuracy.
In short, according to this characteristic configuration, it is possible to further improve the processing accuracy of the workpiece material.
本発明に係る回転塑性加工装置の更なる特徴構成は、前記ローラの外周面に外歯成形型が備えられ、
前記被加工素材の外周面に外歯を成形して、外歯を有する歯車を製造する点にある。 According to a further feature of the rotary plastic working apparatus according to the present invention, an outer tooth forming die is provided on the outer peripheral surface of the roller,
The present invention resides in that external teeth are formed on the outer peripheral surface of the workpiece material to produce a gear having external teeth.
前記被加工素材の外周面に外歯を成形して、外歯を有する歯車を製造する点にある。 According to a further feature of the rotary plastic working apparatus according to the present invention, an outer tooth forming die is provided on the outer peripheral surface of the roller,
The present invention resides in that external teeth are formed on the outer peripheral surface of the workpiece material to produce a gear having external teeth.
上記特徴構成によれば、回転状態にあるローラの外歯成形型が、回転状態にある素材支持部に支持された被加工素材に押し付けられるので、被加工素材の外周面に外歯が成形されて、外歯を有する歯車が製造される。
従って、外歯を有する歯車の加工精度を向上することができる。 According to the above characteristic configuration, the external tooth forming die of the roller in the rotating state is pressed against the work material supported by the material support portion in the rotating state, so that the external teeth are formed on the outer peripheral surface of the work material. Thus, a gear having external teeth is manufactured.
Therefore, the processing accuracy of the gear having the external teeth can be improved.
従って、外歯を有する歯車の加工精度を向上することができる。 According to the above characteristic configuration, the external tooth forming die of the roller in the rotating state is pressed against the work material supported by the material support portion in the rotating state, so that the external teeth are formed on the outer peripheral surface of the work material. Thus, a gear having external teeth is manufactured.
Therefore, the processing accuracy of the gear having the external teeth can be improved.
本発明に係る回転塑性加工装置の更なる特徴構成は、前記主軸と同心状に回転可能な保持部材を前記素材支持部に向けて移動させて、前記素材支持部に支持された被加工素材を前記素材支持部とにより挟持する素材保持機構と、
前記素材保持機構を働かせて、被加工素材を前記素材支持部と前記保持部材とにより挟持する素材保持工程を実行し、前記押し付け機構を働かせて、前記伝達ギア位置保持機構により前記伝達ギアが前記同期ギアに噛み合わされた状態で、前記ローラにより被加工素材を塑性加工する加工工程を実行する制御手段とが設けられている点にある。 According to a further feature of the rotary plastic working apparatus according to the present invention, a workpiece supported by the material support portion is moved by moving a holding member that can rotate concentrically with the main shaft toward the material support portion. A material holding mechanism clamped by the material support part;
The material holding mechanism is operated to execute a material holding process for holding the workpiece material between the material support portion and the holding member, the pressing mechanism is operated, and the transmission gear is held by the transmission gear position holding mechanism. Control means is provided for executing a processing step of plastic processing the workpiece material by the roller in a state of being engaged with the synchronous gear.
前記素材保持機構を働かせて、被加工素材を前記素材支持部と前記保持部材とにより挟持する素材保持工程を実行し、前記押し付け機構を働かせて、前記伝達ギア位置保持機構により前記伝達ギアが前記同期ギアに噛み合わされた状態で、前記ローラにより被加工素材を塑性加工する加工工程を実行する制御手段とが設けられている点にある。 According to a further feature of the rotary plastic working apparatus according to the present invention, a workpiece supported by the material support portion is moved by moving a holding member that can rotate concentrically with the main shaft toward the material support portion. A material holding mechanism clamped by the material support part;
The material holding mechanism is operated to execute a material holding process for holding the workpiece material between the material support portion and the holding member, the pressing mechanism is operated, and the transmission gear is held by the transmission gear position holding mechanism. Control means is provided for executing a processing step of plastic processing the workpiece material by the roller in a state of being engaged with the synchronous gear.
上記特徴構成によれば、被加工素材を素材支持部と保持部材とにより挟持する素材保持工程が実行され、伝達ギアが同期ギアに噛み合わされた状態で、素材支持部と同期回転するローラを被加工素材から離間した位置から被加工素材に押し付けて、被加工素材を塑性加工する加工工程が実行される。
従って、加工精度を向上し得るように被加工素材を加工する工程が、順次自動的に実行される。 According to the above characteristic configuration, the material holding step of holding the workpiece material between the material support portion and the holding member is performed, and the roller that rotates in synchronization with the material support portion is covered with the transmission gear meshed with the synchronization gear. A machining process is performed in which the workpiece material is plastically pressed by pressing against the workpiece material from a position away from the workpiece material.
Accordingly, the process of processing the material to be processed so as to improve the processing accuracy is automatically executed sequentially.
従って、加工精度を向上し得るように被加工素材を加工する工程が、順次自動的に実行される。 According to the above characteristic configuration, the material holding step of holding the workpiece material between the material support portion and the holding member is performed, and the roller that rotates in synchronization with the material support portion is covered with the transmission gear meshed with the synchronization gear. A machining process is performed in which the workpiece material is plastically pressed by pressing against the workpiece material from a position away from the workpiece material.
Accordingly, the process of processing the material to be processed so as to improve the processing accuracy is automatically executed sequentially.
以下、図面に基づいて、本発明を外歯を有する歯車を製造する回転塑性加工装置に適用した場合の実施形態を説明する。
先ず、図1に基づいて、回転塑性加工装置の全体構成を説明する。尚、図1(a)は、回転塑性加工装置の概略の全体構成を示す正面図であり、図1(b)は、偏心カップリング10の分解斜視図である。
図1(a)に示すように、回転塑性加工装置は、円盤状素材(軸心方向視で円状の外周面を有する被加工素材の一例)Wを支持する状態で、主軸1周りに回転駆動装置(回転駆動手段の一例)2により回転駆動される素材支持部3と、円盤状素材Wを塑性加工するローラ4を主軸1に直交する方向に移動して当該ローラ4を円盤状素材Wに押し付ける押し付け機構Dと、ローラ4を素材支持部3と同期回転させるように、主軸1の回転をローラ4に伝達する同期回転機構Sとを備えて構成されている。
更に、回転塑性加工装置には、主軸1と同心状に回転可能な押圧部材5(保持部材の一例)を素材支持部3に向けて移動させて、素材支持部3に支持された円盤状素材Wを押圧部材5と素材支持部3とにより挟持するワーク保持機構(素材保持機構の一例)H、及び、回転塑性加工装置の運転を制御する制御部7が設けられている。 Hereinafter, based on the drawings, an embodiment when the present invention is applied to a rotary plastic working apparatus for producing a gear having external teeth will be described.
First, based on FIG. 1, the whole structure of a rotary plastic working apparatus is demonstrated. 1A is a front view showing a schematic overall configuration of the rotary plastic working apparatus, and FIG. 1B is an exploded perspective view of theeccentric coupling 10.
As shown in FIG. 1 (a), the rotary plastic working apparatus rotates around themain shaft 1 while supporting a disk-shaped material (an example of a work material having a circular outer peripheral surface as viewed in the axial direction). A material support portion 3 that is rotationally driven by a driving device (an example of a rotational drive means) 2 and a roller 4 that plastically processes the disk-shaped material W are moved in a direction perpendicular to the main shaft 1 to move the roller 4 to the disk-shaped material W. And a synchronous rotation mechanism S that transmits the rotation of the main shaft 1 to the roller 4 so as to rotate the roller 4 synchronously with the material support 3.
Further, in the rotary plastic working apparatus, a pressing member 5 (an example of a holding member) that can rotate concentrically with themain shaft 1 is moved toward the material support portion 3 to be supported by the material support portion 3. A workpiece holding mechanism (an example of a material holding mechanism) H that holds W between the pressing member 5 and the material support portion 3 and a control portion 7 that controls the operation of the rotary plastic working apparatus are provided.
先ず、図1に基づいて、回転塑性加工装置の全体構成を説明する。尚、図1(a)は、回転塑性加工装置の概略の全体構成を示す正面図であり、図1(b)は、偏心カップリング10の分解斜視図である。
図1(a)に示すように、回転塑性加工装置は、円盤状素材(軸心方向視で円状の外周面を有する被加工素材の一例)Wを支持する状態で、主軸1周りに回転駆動装置(回転駆動手段の一例)2により回転駆動される素材支持部3と、円盤状素材Wを塑性加工するローラ4を主軸1に直交する方向に移動して当該ローラ4を円盤状素材Wに押し付ける押し付け機構Dと、ローラ4を素材支持部3と同期回転させるように、主軸1の回転をローラ4に伝達する同期回転機構Sとを備えて構成されている。
更に、回転塑性加工装置には、主軸1と同心状に回転可能な押圧部材5(保持部材の一例)を素材支持部3に向けて移動させて、素材支持部3に支持された円盤状素材Wを押圧部材5と素材支持部3とにより挟持するワーク保持機構(素材保持機構の一例)H、及び、回転塑性加工装置の運転を制御する制御部7が設けられている。 Hereinafter, based on the drawings, an embodiment when the present invention is applied to a rotary plastic working apparatus for producing a gear having external teeth will be described.
First, based on FIG. 1, the whole structure of a rotary plastic working apparatus is demonstrated. 1A is a front view showing a schematic overall configuration of the rotary plastic working apparatus, and FIG. 1B is an exploded perspective view of the
As shown in FIG. 1 (a), the rotary plastic working apparatus rotates around the
Further, in the rotary plastic working apparatus, a pressing member 5 (an example of a holding member) that can rotate concentrically with the
この実施形態の回転塑性加工装置は、図7にも示すように、ローラ4の外周面に外歯成形型4mが備えられ、図8に示すように、円盤状素材Wの外周面に外歯Woを成形して、外歯Woを有する歯車(以下、単に歯車と記載する場合がある)Wを製造する。尚、図8(a)は、塑性加工前の円盤状素材Wの斜視図であり、図8(b)は歯車Wの斜視図である。図8(a)に示すように、円盤状素材Wは、軸心方向視で円状の外周面を有すると共に、軸心と同心状で貫通する軸孔Whを有する。ローラ4の外歯成形型4mの長さ(軸心方向での長さに該当する)が、円盤状素材Wの外周面に形成する外歯の目標長さよりも多少長くなるように設定されている。
As shown in FIG. 7, the rotary plastic working apparatus of this embodiment is provided with an external tooth forming die 4 m on the outer peripheral surface of the roller 4, and external teeth on the outer peripheral surface of the disk-shaped material W as shown in FIG. 8. Wo is formed to produce a gear W (hereinafter sometimes simply referred to as a gear) having external teeth Wo. 8A is a perspective view of the disk-shaped material W before plastic working, and FIG. 8B is a perspective view of the gear W. As shown in FIG. 8A, the disk-shaped material W has a circular outer peripheral surface as viewed in the axial direction, and has a shaft hole Wh that is concentric with and penetrates the axial center. The length of the external tooth forming die 4m of the roller 4 (corresponding to the length in the axial direction) is set to be slightly longer than the target length of the external teeth formed on the outer peripheral surface of the disc-shaped material W. Yes.
尚、以下の説明では、図1(a)に示すように、主軸1の回転軸心A1に沿った方向をZ方向、主軸1の回転軸心A1に直交する方向をX方向、Z方向及びX方向の両方向に直交する方向をY方向と夫々記載する場合がある。又、Z方向において、主軸1の基端(回転駆動装置2に伝動連結される端部)に近づく方向を-Z方向とし、主軸1の基端から遠ざかる方向を+Z方向とする。又、X方向において、主軸1の回転軸心A1に近づく方向を-X方向とし、主軸1の回転軸心A1から遠ざかる方向を+X方向とする。
In the following description, as shown in FIG. 1A, the direction along the rotation axis A1 of the main shaft 1 is the Z direction, the direction orthogonal to the rotation axis A1 of the main shaft 1 is the X direction, the Z direction, and The direction orthogonal to both the X directions may be described as the Y direction. Further, in the Z direction, the direction approaching the base end of the main shaft 1 (the end portion connected to the rotary drive device 2) is defined as the -Z direction, and the direction away from the base end of the main shaft 1 is defined as the + Z direction. In the X direction, the direction approaching the rotation axis A1 of the main shaft 1 is defined as the -X direction, and the direction away from the rotation axis A1 of the main shaft 1 is defined as the + X direction.
図1及び図2に示すように、本発明では、同期回転機構Sが、主軸1周りに素材支持部3と一体回転する同期ギア8と、当該同期ギア8に噛み合う状態で配設された伝達ギア9と、可動軸11に一体回転可能に連結された従動プレート12、可動軸11の外周部に配設されると共に、回転軸心A3が可動軸11と偏心し且つ従動プレート12に回転を伝達可能に従動側リンク機構Lsにより従動プレート12に連結された内径が可動軸11よりも大径の中間プレート13、及び、可動軸11の外周部に配設されると共に、回転軸心A4が可動軸11と偏心し且つ中間プレート13に回転を伝達可能に駆動側リンク機構Ldにより中間プレート13に連結された内径が可動軸11よりも大径の駆動プレート14を備えた偏心カップリング10と、伝達ギア9の位置を、同期ギア8に噛み合わせた状態で保持する伝達ギア位置保持機構Kとを備えて構成されている。
そして、偏心カップリング10において、駆動プレート14が伝達ギア9に同心状で一体回転可能に連結され、且つ、可動軸11における駆動プレート14を貫通した端部がローラ4に同心状で一体回転可能に連結されて、当該偏心カップリング10が、可動軸11を主軸1に平行にした姿勢で当該可動軸11の両端を可動軸用軸受21にて回転可能に支持した状態で設けられ、押し付け機構Dが、可動軸11を当該可動軸11の回転軸心A2と主軸1の回転軸心A1とを結ぶ軸心間垂線αに沿って移動するように設けられている。つまり、X方向は、軸心間垂線αに沿う方向となる。尚、この実施形態では、軸心間垂線αは、移動開始時点において所定の開始位置Ps(図3参照)に位置する可動軸11の回転軸心A2と主軸1の回転軸心A1とを結ぶ垂線として、定義される。 As shown in FIGS. 1 and 2, in the present invention, the synchronous rotation mechanism S is provided with asynchronous gear 8 that rotates integrally with the material support portion 3 around the main shaft 1, and a transmission that is arranged in mesh with the synchronous gear 8. The gear 9, the driven plate 12 connected to the movable shaft 11 so as to be integrally rotatable, are disposed on the outer periphery of the movable shaft 11, and the rotational axis A3 is eccentric from the movable shaft 11 and rotates to the driven plate 12. An intermediate plate 13 having an inner diameter coupled to the driven plate 12 by the followable link mechanism Ls capable of transmission is disposed on the outer periphery of the movable shaft 11 and the rotary shaft A4. An eccentric coupling 10 having a drive plate 14 having an inner diameter larger than that of the movable shaft 11, which is eccentric to the movable shaft 11 and connected to the intermediate plate 13 by a drive side link mechanism Ld so as to be able to transmit rotation to the intermediate plate 13; The position of the transmission gear 9 is configured by a transmission gear position holding mechanism K for retaining in a state of meshing the synchronizing gear 8.
In theeccentric coupling 10, the drive plate 14 is concentrically connected to the transmission gear 9 so as to be integrally rotatable, and the end portion of the movable shaft 11 penetrating the drive plate 14 is concentrically rotatable integrally with the roller 4. The eccentric coupling 10 is provided in a state in which both ends of the movable shaft 11 are rotatably supported by the movable shaft bearing 21 in a posture in which the movable shaft 11 is parallel to the main shaft 1. D is provided so as to move the movable shaft 11 along the axis-centered perpendicular α connecting the rotation axis A2 of the movable shaft 11 and the rotation axis A1 of the main shaft 1. That is, the X direction is a direction along the axis-centered perpendicular α. In this embodiment, the axis center perpendicular line α connects the rotation axis A2 of the movable shaft 11 located at a predetermined start position Ps (see FIG. 3) and the rotation axis A1 of the main shaft 1 at the start of movement. Defined as a normal.
そして、偏心カップリング10において、駆動プレート14が伝達ギア9に同心状で一体回転可能に連結され、且つ、可動軸11における駆動プレート14を貫通した端部がローラ4に同心状で一体回転可能に連結されて、当該偏心カップリング10が、可動軸11を主軸1に平行にした姿勢で当該可動軸11の両端を可動軸用軸受21にて回転可能に支持した状態で設けられ、押し付け機構Dが、可動軸11を当該可動軸11の回転軸心A2と主軸1の回転軸心A1とを結ぶ軸心間垂線αに沿って移動するように設けられている。つまり、X方向は、軸心間垂線αに沿う方向となる。尚、この実施形態では、軸心間垂線αは、移動開始時点において所定の開始位置Ps(図3参照)に位置する可動軸11の回転軸心A2と主軸1の回転軸心A1とを結ぶ垂線として、定義される。 As shown in FIGS. 1 and 2, in the present invention, the synchronous rotation mechanism S is provided with a
In the
ここで、可動軸11の回転軸心A2と同心状の従動プレート12の回転軸心、及び、ローラ4の回転軸心も共に、符号A2にて示す。又、駆動プレート14の回転軸心A4と同心状の伝達ギア9の回転軸心も、符号A4にて示す。
尚、図2(a)は、偏心カップリング10の周辺を詳細に示す正面図であり、図2(b)は、偏心カップリング10を示す横断平面図である。 Here, both the rotation axis of the drivenplate 12 and the rotation axis of the roller 4 that are concentric with the rotation axis A2 of the movable shaft 11 are also denoted by reference numeral A2. The rotational axis of the transmission gear 9 concentric with the rotational axis A4 of the drive plate 14 is also indicated by reference numeral A4.
2A is a front view showing in detail the periphery of theeccentric coupling 10, and FIG. 2B is a cross-sectional plan view showing the eccentric coupling 10.
尚、図2(a)は、偏心カップリング10の周辺を詳細に示す正面図であり、図2(b)は、偏心カップリング10を示す横断平面図である。 Here, both the rotation axis of the driven
2A is a front view showing in detail the periphery of the
次に、回転塑性加工装置の各部について、説明を加える。
図1(a)に示すように、架台(図示省略)上に、主軸1が鉛直方向に沿う回転軸心A1周りに回転自在に支持されて設けられ、電動モータ等の回転駆動装置2が、この主軸1を回転駆動するように設けられ、この主軸1の先端に素材支持部3が装着され、主軸1における素材支持部3の下方近くの外周面に、同期ギア8が設けられている。素材支持部3は、円柱状の本体部3bと、その本体部3bの先端面から同心状に突出する本体部3bよりも小径の円柱状の挿通軸部3aを備えて構成され、その挿通軸部3aは、円盤状素材Wの軸孔Whに内嵌可能である。この素材支持部3が、主軸1の先端に、その回転軸心A1と同心状になる状態で装着されている。
つまり、円盤状素材Wが、その軸孔Whに素材支持部3の挿通軸部3aを挿通させて、素材支持部3の本体部3bの先端面に当接された状態で、素材支持部3に、主軸1の回転軸心A1と同心状に装着される。
そして、回転駆動装置2が作動されると、主軸1の回転軸心A1回りに素材支持部3と同期ギア8が同心で一体回転する。 Next, description will be added about each part of the rotary plastic working apparatus.
As shown in FIG. 1 (a), amain shaft 1 is rotatably supported around a rotation axis A1 along the vertical direction on a gantry (not shown), and a rotary drive device 2 such as an electric motor is provided. The main shaft 1 is provided so as to be rotationally driven. A material support portion 3 is attached to the tip of the main shaft 1, and a synchronous gear 8 is provided on the outer peripheral surface of the main shaft 1 near the lower portion of the material support portion 3. The material support portion 3 includes a cylindrical main body portion 3b and a columnar insertion shaft portion 3a having a smaller diameter than the main body portion 3b projecting concentrically from the distal end surface of the main body portion 3b. The part 3a can be fitted in the shaft hole Wh of the disk-shaped material W. The material support portion 3 is attached to the tip of the main shaft 1 in a state of being concentric with the rotation axis A1.
That is, the disk-shaped material W is inserted into the shaft hole Wh through theinsertion shaft portion 3a of the material support portion 3 and is in contact with the distal end surface of the main body portion 3b of the material support portion 3. Are mounted concentrically with the rotational axis A1 of the main shaft 1.
When therotation driving device 2 is operated, the material support portion 3 and the synchronous gear 8 rotate concentrically and integrally around the rotation axis A1 of the main shaft 1.
図1(a)に示すように、架台(図示省略)上に、主軸1が鉛直方向に沿う回転軸心A1周りに回転自在に支持されて設けられ、電動モータ等の回転駆動装置2が、この主軸1を回転駆動するように設けられ、この主軸1の先端に素材支持部3が装着され、主軸1における素材支持部3の下方近くの外周面に、同期ギア8が設けられている。素材支持部3は、円柱状の本体部3bと、その本体部3bの先端面から同心状に突出する本体部3bよりも小径の円柱状の挿通軸部3aを備えて構成され、その挿通軸部3aは、円盤状素材Wの軸孔Whに内嵌可能である。この素材支持部3が、主軸1の先端に、その回転軸心A1と同心状になる状態で装着されている。
つまり、円盤状素材Wが、その軸孔Whに素材支持部3の挿通軸部3aを挿通させて、素材支持部3の本体部3bの先端面に当接された状態で、素材支持部3に、主軸1の回転軸心A1と同心状に装着される。
そして、回転駆動装置2が作動されると、主軸1の回転軸心A1回りに素材支持部3と同期ギア8が同心で一体回転する。 Next, description will be added about each part of the rotary plastic working apparatus.
As shown in FIG. 1 (a), a
That is, the disk-shaped material W is inserted into the shaft hole Wh through the
When the
図1(a)に示すように、ワーク保持機構Hは、押圧部材5と、その押圧部材5を主軸1の回転軸心A1方向(Z方向)に沿って往復移動駆動するワーク保持用油圧シリンダ6とを備えて構成され、押圧部材5が素材支持部3に対向して位置するように配設されている。押圧部材5は、主軸1の回転軸心A1と同心で回転可能なようにベアリング(図示省略)等を介してワーク保持用油圧シリンダ6のシリンダロッドの先端に回転自在に支持されている。
押圧部材5を素材支持部3に装着された円盤状素材Wに押し付けるようにワーク保持用油圧シリンダ6を作動させることにより、円盤状素材Wを素材支持部3と押圧部材5とにより挟持するように構成されている。
そして、回転駆動装置2により主軸1を回転駆動することにより、円盤状素材Wを素材支持部3と押圧部材5とにより挟持した状態で素材支持部3と一体的に回転させるように構成されている。 As shown in FIG. 1A, the work holding mechanism H includes apressing member 5 and a hydraulic cylinder for holding a workpiece that reciprocates the pressing member 5 along the rotation axis A <b> 1 direction (Z direction) of the main shaft 1. 6, and the pressing member 5 is disposed so as to face the material support portion 3. The pressing member 5 is rotatably supported at the tip of the cylinder rod of the work holding hydraulic cylinder 6 via a bearing (not shown) so that it can rotate concentrically with the rotational axis A1 of the main shaft 1.
By operating the work holdinghydraulic cylinder 6 so as to press the pressing member 5 against the disk-shaped material W mounted on the material support portion 3, the disk-shaped material W is held between the material support portion 3 and the pressing member 5. It is configured.
And it is comprised so that themain shaft 1 may be rotationally driven by the rotation drive device 2, and the disk-shaped raw material W may be rotated integrally with the raw material support part 3 in the state clamped by the raw material support part 3 and the press member 5. Yes.
押圧部材5を素材支持部3に装着された円盤状素材Wに押し付けるようにワーク保持用油圧シリンダ6を作動させることにより、円盤状素材Wを素材支持部3と押圧部材5とにより挟持するように構成されている。
そして、回転駆動装置2により主軸1を回転駆動することにより、円盤状素材Wを素材支持部3と押圧部材5とにより挟持した状態で素材支持部3と一体的に回転させるように構成されている。 As shown in FIG. 1A, the work holding mechanism H includes a
By operating the work holding
And it is comprised so that the
図1及び図2に基づいて、偏心カップリング10について説明を加える。
従動プレート12は、可動軸11に回転軸心A2周りに一体回転可能に外嵌状に取り付けられている。
駆動プレート14及び中間プレート13は、夫々、内径が可動軸11よりも大径のリング状に構成され、リング状の中間プレート13が、可動軸11の外周部に位置し(可動軸11が中間プレート13に挿通され)且つその回転軸心A3が従動プレート12の回転軸心A2と平行になる状態で、可動軸11に取り付けられた従動プレート12に従動側リンク機構Lsにより連結され、並びに、リング状の駆動プレート14が、可動軸11の外周部に位置し(可動軸11が駆動プレート14に挿通され)且つその回転軸心A4が従動プレート12の回転軸心A2と平行になる状態で、駆動側リンク機構Ldにより中間プレート13に連結されている。
駆動プレート14における中間プレート13の側とは反対側に、伝達ギア9がその回転軸心A4を駆動プレート14の回転軸心A4と同心状にして固定されている。つまり、駆動プレート14が伝達ギア9に回転軸心A4周りに同心状で一体回転可能に連結されている。
可動軸11は、従動プレート12及び伝達ギア9のいずれからも突出し、その可動軸11における伝達ギア9からの突出部分の中間に、ローラ4が同心状で一体回転可能に外嵌状に取り付けられている。つまり、可動軸11における駆動プレート14を貫通した端部がローラ4に回転軸心A2周りに同心状で一体回転可能に連結されている。 Based on FIGS. 1 and 2, theeccentric coupling 10 will be described.
The drivenplate 12 is attached to the movable shaft 11 in an outer fitting shape so as to be integrally rotatable around the rotation axis A2.
Thedrive plate 14 and the intermediate plate 13 are each configured in a ring shape having an inner diameter larger than that of the movable shaft 11, and the ring-shaped intermediate plate 13 is positioned on the outer peripheral portion of the movable shaft 11 (the movable shaft 11 is in the middle). And is connected by a driven side link mechanism Ls of the driven plate 12 attached to the movable shaft 11 in a state where the rotational axis A3 thereof is parallel to the rotational axis A2 of the driven plate 12, and The ring-shaped drive plate 14 is located on the outer peripheral portion of the movable shaft 11 (the movable shaft 11 is inserted through the drive plate 14), and the rotation axis A4 thereof is parallel to the rotation axis A2 of the driven plate 12. The drive side link mechanism Ld is connected to the intermediate plate 13.
Thetransmission gear 9 is fixed to the drive plate 14 on the side opposite to the intermediate plate 13 side with its rotational axis A4 concentric with the rotational axis A4 of the drive plate 14. That is, the drive plate 14 is concentrically connected to the transmission gear 9 around the rotation axis A4 so as to be integrally rotatable.
Themovable shaft 11 protrudes from both the driven plate 12 and the transmission gear 9, and the roller 4 is concentrically attached to the intermediate portion of the protruding portion from the transmission gear 9 on the movable shaft 11 so as to be integrally fitted. ing. That is, the end of the movable shaft 11 that penetrates the drive plate 14 is connected to the roller 4 so as to be concentrically and integrally rotatable around the rotation axis A2.
従動プレート12は、可動軸11に回転軸心A2周りに一体回転可能に外嵌状に取り付けられている。
駆動プレート14及び中間プレート13は、夫々、内径が可動軸11よりも大径のリング状に構成され、リング状の中間プレート13が、可動軸11の外周部に位置し(可動軸11が中間プレート13に挿通され)且つその回転軸心A3が従動プレート12の回転軸心A2と平行になる状態で、可動軸11に取り付けられた従動プレート12に従動側リンク機構Lsにより連結され、並びに、リング状の駆動プレート14が、可動軸11の外周部に位置し(可動軸11が駆動プレート14に挿通され)且つその回転軸心A4が従動プレート12の回転軸心A2と平行になる状態で、駆動側リンク機構Ldにより中間プレート13に連結されている。
駆動プレート14における中間プレート13の側とは反対側に、伝達ギア9がその回転軸心A4を駆動プレート14の回転軸心A4と同心状にして固定されている。つまり、駆動プレート14が伝達ギア9に回転軸心A4周りに同心状で一体回転可能に連結されている。
可動軸11は、従動プレート12及び伝達ギア9のいずれからも突出し、その可動軸11における伝達ギア9からの突出部分の中間に、ローラ4が同心状で一体回転可能に外嵌状に取り付けられている。つまり、可動軸11における駆動プレート14を貫通した端部がローラ4に回転軸心A2周りに同心状で一体回転可能に連結されている。 Based on FIGS. 1 and 2, the
The driven
The
The
The
偏心カップリング10において、従動側リンク機構Lsは、一端が中間プレート13に枢支され且つ他端が従動プレート12に枢支された4本の従動側リンク15を備えて構成されて、それら4本の従動側リンク15が互いに平行になる状態で可動軸11の周方向に分散配置され、駆動側リンク機構Ldが、一端が中間プレート13に枢支され且つ他端が駆動プレート14に枢支された4本の駆動側リンク16を備えて構成されて、それら4本の駆動側リンク16が互いに平行になる状態で可動軸11の周方向に分散配置されている。
この実施形態では、各従動側リンク15の一端及び各駆動側リンク16の一端は、同心の枢支軸心a1にて中間プレート13に枢支されている。ここで、各従動側リンク15の他端が従動プレート12に枢支されている枢支軸心を、符号a2で示し、各駆動側リンク16の他端が駆動プレート14に枢支されている枢支軸心を、符号a3で示す。4本の従動側リンク15夫々における両側の枢支軸心a1,a2間の間隔、及び、4本の駆動側リンク16夫々における両側の枢支軸心a1,a3間の間隔は、全て同一である。 In theeccentric coupling 10, the driven side link mechanism Ls includes four driven side links 15 having one end pivotally supported by the intermediate plate 13 and the other end pivotally supported by the driven plate 12. The driven links 15 are distributed in the circumferential direction of the movable shaft 11 in a state of being parallel to each other, and the driving side link mechanism Ld is pivotally supported at one end by the intermediate plate 13 and at the other end by the driving plate 14. The four drive side links 16 are configured to be distributed in the circumferential direction of the movable shaft 11 in a state in which the four drive side links 16 are parallel to each other.
In this embodiment, one end of each drivenside link 15 and one end of each drive side link 16 are pivotally supported on the intermediate plate 13 by a concentric pivot axis a1. Here, a pivot axis in which the other end of each driven side link 15 is pivotally supported by the driven plate 12 is indicated by reference numeral a <b> 2, and the other end of each drive side link 16 is pivotally supported by the drive plate 14. The pivot axis is indicated by reference numeral a3. The distance between the pivot axes a1 and a2 on both sides of the four driven links 15 and the distance between the pivot axes a1 and a3 on both sides of the four drive links 16 are all the same. is there.
この実施形態では、各従動側リンク15の一端及び各駆動側リンク16の一端は、同心の枢支軸心a1にて中間プレート13に枢支されている。ここで、各従動側リンク15の他端が従動プレート12に枢支されている枢支軸心を、符号a2で示し、各駆動側リンク16の他端が駆動プレート14に枢支されている枢支軸心を、符号a3で示す。4本の従動側リンク15夫々における両側の枢支軸心a1,a2間の間隔、及び、4本の駆動側リンク16夫々における両側の枢支軸心a1,a3間の間隔は、全て同一である。 In the
In this embodiment, one end of each driven
偏心カップリング10において、中間プレート13の回転軸心A3に対する駆動プレート14の回転軸心A4及び従動プレート12の回転軸心A2夫々の相対位置が各別に変更自在に構成されて、駆動プレート14の回転軸心A4と従動プレート12の回転軸心A2とが所定の範囲で偏心可能に構成されている。
駆動プレート14の回転軸心A4と従動プレート12の回転軸心A2とを必要とされる所定の範囲で偏心させても、従動プレート12、中間プレート13、駆動プレート14、4本の従動側リンク15及び4本の駆動側リンク16が可動軸11と干渉しないように構成されている。
そして、駆動プレート14が回転すると、その駆動プレート14の回転が4本の駆動側リンク16により中間プレート13に同期伝達されると共に、その中間プレート13の回転が4本の従動側リンク15により従動プレート12に同期伝達されるので、駆動プレート14が回転すると、中間プレート13、従動プレート12及び可動軸11が駆動プレート14と同期回転する。 In theeccentric coupling 10, the relative positions of the rotation axis A4 of the drive plate 14 and the rotation axis A2 of the driven plate 12 with respect to the rotation axis A3 of the intermediate plate 13 are configured to be freely changeable. The rotation axis A4 and the rotation axis A2 of the driven plate 12 are configured to be eccentric within a predetermined range.
Even if the rotation axis A4 of thedrive plate 14 and the rotation axis A2 of the driven plate 12 are decentered within a required range, the driven plate 12, the intermediate plate 13, the drive plate 14, and the four driven links. Fifteen and four drive side links 16 are configured not to interfere with the movable shaft 11.
When thedrive plate 14 rotates, the rotation of the drive plate 14 is synchronously transmitted to the intermediate plate 13 by the four drive side links 16, and the rotation of the intermediate plate 13 is driven by the four driven side links 15. Since it is transmitted synchronously to the plate 12, when the drive plate 14 rotates, the intermediate plate 13, the driven plate 12 and the movable shaft 11 rotate synchronously with the drive plate 14.
駆動プレート14の回転軸心A4と従動プレート12の回転軸心A2とを必要とされる所定の範囲で偏心させても、従動プレート12、中間プレート13、駆動プレート14、4本の従動側リンク15及び4本の駆動側リンク16が可動軸11と干渉しないように構成されている。
そして、駆動プレート14が回転すると、その駆動プレート14の回転が4本の駆動側リンク16により中間プレート13に同期伝達されると共に、その中間プレート13の回転が4本の従動側リンク15により従動プレート12に同期伝達されるので、駆動プレート14が回転すると、中間プレート13、従動プレート12及び可動軸11が駆動プレート14と同期回転する。 In the
Even if the rotation axis A4 of the
When the
図6に示すように、従動プレート12の回転軸心A2と駆動プレート14の回転軸心A4とが同心状になると、従動プレート12の回転軸心方向(Z方向)視において、従動側リンク15の両側の枢支軸心a1,a2を結ぶ直線(図示省略)と駆動側リンク16の両側の枢支軸心a1,a3を結ぶ直線(図示省略)とが重なる(即ち、平行になる)ように構成されている。
As shown in FIG. 6, when the rotational axis A2 of the driven plate 12 and the rotational axis A4 of the drive plate 14 are concentric, the driven side link 15 in the rotational axis direction (Z direction) of the driven plate 12 is seen. A straight line (not shown) connecting the pivot axes a1 and a2 on both sides of the drive side link and a straight line (not shown) connecting the pivot axes a1 and a3 on both sides of the drive side link 16 overlap (that is, parallel). It is configured.
そして、図1(a)に示すように、伝達ギア9及びローラ4が上述のように組み付けられた偏心カップリング10の可動軸11の両端が、一対の可動軸用軸受21により、正面視でコの字形状の支持枠22に回転自在に支持されて、ユニット状の加工ユニットUが構成されている。
そして、この加工ユニットUが、可動軸11を主軸1に平行にした姿勢で、X方向に往復移動自在に支持台23上の一対のレール24に支持され、このように一対のレール24に支持された加工ユニットUの支持枠22に、回転軸心を軸心間垂線αに沿わせたネジ軸25が螺挿されている。
そして、ネジ軸25を正逆回転させることにより、加工ユニットUをX方向に往復移動させるパルスモータ等のX方向駆動装置26が設けられている。つまり、加工ユニットUがX方向に往復移動する際は、可動軸11の回転軸心A2が軸心間垂線α上を移動する状態で往復移動する。 As shown in FIG. 1A, both ends of themovable shaft 11 of the eccentric coupling 10 in which the transmission gear 9 and the roller 4 are assembled as described above are supported by a pair of movable shaft bearings 21 in a front view. A unit-shaped processing unit U is configured to be rotatably supported by a U-shaped support frame 22.
The processing unit U is supported by the pair ofrails 24 on the support base 23 so as to be reciprocally movable in the X direction with the movable shaft 11 parallel to the main shaft 1, and is thus supported by the pair of rails 24. A screw shaft 25 having a rotation axis centered along the axis-centered perpendicular α is screwed into the support frame 22 of the processed unit U.
AnX-direction drive device 26 such as a pulse motor that reciprocally moves the machining unit U in the X direction by rotating the screw shaft 25 forward and backward is provided. That is, when the machining unit U reciprocates in the X direction, the reciprocating movement is performed in a state in which the rotational axis A2 of the movable shaft 11 moves on the axis center perpendicular line α.
そして、この加工ユニットUが、可動軸11を主軸1に平行にした姿勢で、X方向に往復移動自在に支持台23上の一対のレール24に支持され、このように一対のレール24に支持された加工ユニットUの支持枠22に、回転軸心を軸心間垂線αに沿わせたネジ軸25が螺挿されている。
そして、ネジ軸25を正逆回転させることにより、加工ユニットUをX方向に往復移動させるパルスモータ等のX方向駆動装置26が設けられている。つまり、加工ユニットUがX方向に往復移動する際は、可動軸11の回転軸心A2が軸心間垂線α上を移動する状態で往復移動する。 As shown in FIG. 1A, both ends of the
The processing unit U is supported by the pair of
An
つまり、X方向駆動装置26が、ローラ4を主軸1に直交する方向(X方向)に移動してローラ4を円盤状素材Wに押し付ける押し付け機構Dとして機能させるように構成されている。そして、偏心カップリング10が、可動軸11を主軸1に平行にした姿勢で当該可動軸11の両端を可動軸用軸受21にて回転可能に支持した状態で設けられていることになる。又、X方向駆動装置26が、可動軸11を当該可動軸11の回転軸心A2と主軸1の回転軸心A1とを結ぶ軸心間垂線αに沿って移動するように設けられていることになる。
That is, the X-direction drive device 26 is configured to function as a pressing mechanism D that moves the roller 4 in a direction (X direction) orthogonal to the main shaft 1 and presses the roller 4 against the disk-shaped material W. The eccentric coupling 10 is provided in a state where both ends of the movable shaft 11 are rotatably supported by the movable shaft bearing 21 in a posture in which the movable shaft 11 is parallel to the main shaft 1. Further, the X-direction drive device 26 is provided so as to move the movable shaft 11 along the axis-center perpendicular α connecting the rotation axis A2 of the movable shaft 11 and the rotation axis A1 of the main shaft 1. become.
次に、伝達ギア位置保持機構Kについて説明を加えると、図1(a)及び図2に示すように、この伝達ギア位置保持機構Kは、駆動プレート14を駆動プレート用軸受27を介して回転自在に支持する回転支持フレーム28、及び、その回転支持フレーム28を軸心間垂線αに沿って移動させる伝達ギア保持用油圧シリンダ29を備えて構成されている。つまり、駆動プレート14は、回転支持フレーム28により、駆動プレート用軸受27を介して回転自在に支持されている。
この実施形態では、伝達ギア保持用油圧シリンダ29は、駆動プレート14を、その回転軸心A4が軸心間垂線α上を移動する状態でX方向に往復移動させるように設けられている。
そして、伝達ギア位置保持機構Kは、伝達ギア9の位置を同期ギア8に噛み合わせた状態で保持するように構成されている。
つまり、軸心間垂線αと主軸1の回転軸心A1との両方に直交する方向(即ち、Y方向)においては、駆動プレート14の回転軸心A4と従動プレート12の回転軸心A2とは偏心させないように構成されている。 Next, the transmission gear position holding mechanism K will be described. As shown in FIGS. 1A and 2, the transmission gear position holding mechanism K rotates thedrive plate 14 via a drive plate bearing 27. The rotary support frame 28 is supported freely, and the transmission gear holding hydraulic cylinder 29 is configured to move the rotary support frame 28 along the axis-centered perpendicular α. That is, the drive plate 14 is rotatably supported by the rotation support frame 28 via the drive plate bearing 27.
In this embodiment, the transmission gear holdinghydraulic cylinder 29 is provided so as to reciprocate the drive plate 14 in the X direction in a state where the rotational axis A4 of the drive plate 14 moves on the axis-interval perpendicular α.
The transmission gear position holding mechanism K is configured to hold thetransmission gear 9 in a state in which the position of the transmission gear 9 is engaged with the synchronous gear 8.
In other words, in the direction perpendicular to both the axis perpendicular line α and the rotation axis A1 of the main shaft 1 (that is, the Y direction), the rotation axis A4 of thedrive plate 14 and the rotation axis A2 of the driven plate 12 are It is configured not to be eccentric.
この実施形態では、伝達ギア保持用油圧シリンダ29は、駆動プレート14を、その回転軸心A4が軸心間垂線α上を移動する状態でX方向に往復移動させるように設けられている。
そして、伝達ギア位置保持機構Kは、伝達ギア9の位置を同期ギア8に噛み合わせた状態で保持するように構成されている。
つまり、軸心間垂線αと主軸1の回転軸心A1との両方に直交する方向(即ち、Y方向)においては、駆動プレート14の回転軸心A4と従動プレート12の回転軸心A2とは偏心させないように構成されている。 Next, the transmission gear position holding mechanism K will be described. As shown in FIGS. 1A and 2, the transmission gear position holding mechanism K rotates the
In this embodiment, the transmission gear holding
The transmission gear position holding mechanism K is configured to hold the
In other words, in the direction perpendicular to both the axis perpendicular line α and the rotation axis A1 of the main shaft 1 (that is, the Y direction), the rotation axis A4 of the
次に、図3~図6に基づいて、この回転塑性加工装置により歯車を製造するときの制御部7の制御動作を説明する。尚、図3~図6の夫々において、(a)は、回転塑性加工装置における偏心カップリング10の周辺の正面図であり、(b)は、横断平面図である。
尚、X方向駆動装置26により、ローラ4を-X方向に移動して円盤状素材Wを成形するに当たって、開始時にローラ4を位置させる開始位置Ps(可動軸11の回転軸心A2の位置)、及び、成形を終了する終了位置Pe(可動軸11の回転軸心A2の位置)が、X方向において予め設定されて制御部7のメモリに記憶されている。 Next, based on FIG. 3 to FIG. 6, the control operation of thecontrol unit 7 when the gear is manufactured by this rotary plastic working apparatus will be described. 3 to 6, (a) is a front view of the periphery of the eccentric coupling 10 in the rotary plastic working apparatus, and (b) is a transverse plan view.
In addition, when theroller 4 is moved in the −X direction by the X direction driving device 26 to form the disk-shaped material W, the start position Ps at which the roller 4 is positioned at the start (the position of the rotational axis A2 of the movable shaft 11). And, the end position Pe (position of the rotational axis A2 of the movable shaft 11) for finishing the molding is preset in the X direction and stored in the memory of the control unit 7.
尚、X方向駆動装置26により、ローラ4を-X方向に移動して円盤状素材Wを成形するに当たって、開始時にローラ4を位置させる開始位置Ps(可動軸11の回転軸心A2の位置)、及び、成形を終了する終了位置Pe(可動軸11の回転軸心A2の位置)が、X方向において予め設定されて制御部7のメモリに記憶されている。 Next, based on FIG. 3 to FIG. 6, the control operation of the
In addition, when the
この実施形態では、図3及び図4に示すように、開始位置Psは、伝達ギア位置保持機構Kにより同期ギア8に噛み合わせた状態で位置が保持された伝達ギア9の回転軸心A4に対して、回転軸心A2が軸心間垂線αに沿って主軸1とは反対側に設定量(例えば5mm)偏倚したローラ4の位置に設定されている。ローラ4がこの開始位置Psに位置する状態では、ローラ4は、素材支持部3に支持された円盤状素材Wから軸心間垂線αに沿う方向に離間している。
又、図6に示すように、終了位置Peは、回転状態にあるローラ4の外歯成形型4mが、円盤状素材Wの外周面に押し付けられて、円盤状素材Wの外周面に所定の高さの外歯Woを成型可能な位置である。例えば、伝達ギア位置保持機構Kにより同期ギア8に噛み合わせた状態で位置が保持された伝達ギア9の回転軸心A4と、回転軸心A2が軸心間垂線α上において同位置となるローラ4の位置に設定されている。
つまり、図3及び図4に示すように、ローラ4が開始位置Psに位置する状態では、従動プレート12の回転軸心A2は駆動プレート14の回転軸心A4に対して、軸心間垂線αに沿って主軸1とは反対側に設定量偏倚している。又、図6に示すように、ローラ4が終了位置Peに位置すると、従動プレート12の回転軸心A2と駆動プレート14の回転軸心A4とは同心となる。 In this embodiment, as shown in FIGS. 3 and 4, the start position Ps is set to the rotational axis A4 of thetransmission gear 9 whose position is held in a state of being meshed with the synchronous gear 8 by the transmission gear position holding mechanism K. On the other hand, the rotational axis A2 is set at the position of the roller 4 which is biased by a set amount (for example, 5 mm) on the opposite side to the main shaft 1 along the axis-to-center perpendicular α. In a state where the roller 4 is located at the start position Ps, the roller 4 is separated from the disk-shaped material W supported by the material support portion 3 in a direction along the axis-centered perpendicular α.
As shown in FIG. 6, the end position Pe is set at a predetermined position on the outer peripheral surface of the disk-shaped material W by pressing the outertooth forming die 4 m of the roller 4 in a rotating state against the outer peripheral surface of the disk-shaped material W. This is a position where the height external teeth Wo can be molded. For example, the rotation axis A4 of the transmission gear 9 whose position is held in a state of being meshed with the synchronous gear 8 by the transmission gear position holding mechanism K and the roller in which the rotation axis A2 is in the same position on the axis center perpendicular line α. 4 is set.
That is, as shown in FIGS. 3 and 4, when theroller 4 is located at the start position Ps, the rotational axis A2 of the driven plate 12 is perpendicular to the rotational axis A4 of the drive plate 14. The set amount is biased to the opposite side of the main shaft 1 along the line. As shown in FIG. 6, when the roller 4 is positioned at the end position Pe, the rotational axis A2 of the driven plate 12 and the rotational axis A4 of the drive plate 14 are concentric.
又、図6に示すように、終了位置Peは、回転状態にあるローラ4の外歯成形型4mが、円盤状素材Wの外周面に押し付けられて、円盤状素材Wの外周面に所定の高さの外歯Woを成型可能な位置である。例えば、伝達ギア位置保持機構Kにより同期ギア8に噛み合わせた状態で位置が保持された伝達ギア9の回転軸心A4と、回転軸心A2が軸心間垂線α上において同位置となるローラ4の位置に設定されている。
つまり、図3及び図4に示すように、ローラ4が開始位置Psに位置する状態では、従動プレート12の回転軸心A2は駆動プレート14の回転軸心A4に対して、軸心間垂線αに沿って主軸1とは反対側に設定量偏倚している。又、図6に示すように、ローラ4が終了位置Peに位置すると、従動プレート12の回転軸心A2と駆動プレート14の回転軸心A4とは同心となる。 In this embodiment, as shown in FIGS. 3 and 4, the start position Ps is set to the rotational axis A4 of the
As shown in FIG. 6, the end position Pe is set at a predetermined position on the outer peripheral surface of the disk-shaped material W by pressing the outer
That is, as shown in FIGS. 3 and 4, when the
図3~図6に示すように、歯車の製造を開始する前に、伝達ギア保持用油圧シリンダ29により、伝達ギア9の位置が同期ギア8に噛み合わせた状態で保持されている。
図3に示すように、制御部7は、開始指令が指令されると、X方向駆動装置26を働かせて、ローラ4を開始位置Psに位置させ、並びに、ワーク供給装置(図示省略)を働かせて、加工対象の円盤状素材Wを素材支持部3に対向する位置に位置させると共に、ワーク保持用油圧シリンダ6を働かせて、図4に示すように、押圧部材5を-Z方向に移動させて、円盤状素材Wを素材支持部3と押圧部材5とにより挟持するワーク保持工程(素材保持工程に相当する)を実行する。すると、円盤状素材Wが、その軸孔Whに素材支持部3の挿通軸部3aが挿通された状態で、素材支持部3(具体的には本体部3b)と押圧部材5とにより挟持される。 As shown in FIGS. 3 to 6, thetransmission gear 9 is held in a state in which the position of the transmission gear 9 is engaged with the synchronous gear 8 by the transmission gear holding hydraulic cylinder 29 before the manufacturing of the gear is started.
As shown in FIG. 3, when the start command is instructed, thecontrol unit 7 operates the X-direction drive device 26 to position the roller 4 at the start position Ps, and operates the work supply device (not shown). Then, the disk-shaped material W to be processed is positioned at a position facing the material support portion 3, and the work holding hydraulic cylinder 6 is operated to move the pressing member 5 in the -Z direction as shown in FIG. Then, a work holding process (corresponding to the material holding process) for holding the disk-shaped material W between the material support portion 3 and the pressing member 5 is executed. Then, the disc-shaped material W is sandwiched between the material support portion 3 (specifically, the main body portion 3b) and the pressing member 5 in a state where the insertion shaft portion 3a of the material support portion 3 is inserted into the shaft hole Wh. The
図3に示すように、制御部7は、開始指令が指令されると、X方向駆動装置26を働かせて、ローラ4を開始位置Psに位置させ、並びに、ワーク供給装置(図示省略)を働かせて、加工対象の円盤状素材Wを素材支持部3に対向する位置に位置させると共に、ワーク保持用油圧シリンダ6を働かせて、図4に示すように、押圧部材5を-Z方向に移動させて、円盤状素材Wを素材支持部3と押圧部材5とにより挟持するワーク保持工程(素材保持工程に相当する)を実行する。すると、円盤状素材Wが、その軸孔Whに素材支持部3の挿通軸部3aが挿通された状態で、素材支持部3(具体的には本体部3b)と押圧部材5とにより挟持される。 As shown in FIGS. 3 to 6, the
As shown in FIG. 3, when the start command is instructed, the
続いて、制御部7は、図4に示すように、伝達ギア9の位置が同期ギア8に噛み合わされた状態で保持され、且つ、円盤状素材Wが素材支持部3と押圧部材5とにより挟持された状態で、回転駆動装置2を所定の回転速度で作動させる。すると、素材支持部3に支持された円盤状素材Wが素材支持部3と一体回転すると共に、主軸1の回転が、同期ギア8、伝達ギア9及び偏心カップリング10により可動軸11に同期伝達されて、ローラ4が素材支持部3と同期回転する。
続いて、制御部7は、X方向駆動装置26を働かせて、図5に示すように、素材支持部3と同期回転しているローラ4を、軸心間垂線αに沿って所定の速度で-X方向に移動させて、素材支持部3に支持されて素材支持部3と一体回転する円盤状素材Wに押し付ける加工工程を実行する。すると、回転状態にあるローラ4の外歯成形型4mが円盤状素材Wの外周面に当接して、円盤状素材Wの外周面に外歯Woが成型され始め、そのように成型される外歯Woの高さが徐々に高くなる。 Subsequently, as shown in FIG. 4, thecontrol unit 7 is held in a state where the position of the transmission gear 9 is meshed with the synchronous gear 8, and the disc-shaped material W is moved by the material support unit 3 and the pressing member 5. While being held, the rotation driving device 2 is operated at a predetermined rotation speed. Then, the disk-shaped material W supported by the material support portion 3 rotates integrally with the material support portion 3, and the rotation of the main shaft 1 is synchronously transmitted to the movable shaft 11 by the synchronous gear 8, the transmission gear 9 and the eccentric coupling 10. As a result, the roller 4 rotates in synchronization with the material support 3.
Subsequently, thecontrol unit 7 operates the X-direction drive device 26 to move the roller 4 rotating in synchronization with the material support unit 3 at a predetermined speed along the axis-center perpendicular α as shown in FIG. A process of pressing the disk-shaped material W supported by the material support unit 3 and rotating integrally with the material support unit 3 is performed by moving in the −X direction. Then, the external tooth forming die 4m of the roller 4 in a rotating state comes into contact with the outer peripheral surface of the disk-shaped material W, and external teeth Wo start to be formed on the outer peripheral surface of the disk-shaped material W. The height of the tooth Wo gradually increases.
続いて、制御部7は、X方向駆動装置26を働かせて、図5に示すように、素材支持部3と同期回転しているローラ4を、軸心間垂線αに沿って所定の速度で-X方向に移動させて、素材支持部3に支持されて素材支持部3と一体回転する円盤状素材Wに押し付ける加工工程を実行する。すると、回転状態にあるローラ4の外歯成形型4mが円盤状素材Wの外周面に当接して、円盤状素材Wの外周面に外歯Woが成型され始め、そのように成型される外歯Woの高さが徐々に高くなる。 Subsequently, as shown in FIG. 4, the
Subsequently, the
そして、図6に示すように、ローラ4が終了位置Peに達して、円盤状素材Wの外周面に成型される外歯Woの高さが所定の高さに達して、円盤状素材Wの成形が終了すると、制御部7は、X方向駆動装置26を働かせて、ローラ4を開始位置Psに戻し、次いで、回転駆動装置2を停止し、次いで、ワーク保持用油圧シリンダ6をそのシリンダロッドを引っ込めるように作動させると共に、ワーク排出装置(図示省略)を作動させて、製造された歯車を素材支持部3から取り外す。
Then, as shown in FIG. 6, the roller 4 reaches the end position Pe, the height of the external teeth Wo formed on the outer peripheral surface of the disk-shaped material W reaches a predetermined height, and the disk-shaped material W When molding is completed, the control unit 7 operates the X-direction drive device 26 to return the roller 4 to the start position Ps, then stops the rotation drive device 2, and then moves the work holding hydraulic cylinder 6 to its cylinder rod. And the workpiece discharging device (not shown) is operated to remove the manufactured gear from the material support portion 3.
つまり、制御部7が、ワーク保持機構Hを働かせて、円盤状素材Wを素材支持部3と押圧部材5とにより挟持する素材保持工程を実行し、後続して、押し付け機構Dを働かせて、伝達ギア位置保持機構Kにより伝達ギア9が同期ギア8に噛み合わされた状態で、ローラ4により円盤状素材Wを塑性加工する加工工程を実行するように構成されていることになる。
That is, the control unit 7 operates the workpiece holding mechanism H to execute a material holding step of clamping the disc-shaped material W between the material support unit 3 and the pressing member 5, and subsequently operates the pressing mechanism D, In the state where the transmission gear 9 is engaged with the synchronous gear 8 by the transmission gear position holding mechanism K, the processing step of plastic processing the disk-shaped material W by the roller 4 is executed.
従って、伝達ギア9を同期ギア8に十分に深く噛み合わせた状態で、既に素材支持部3と同期回転しているローラ4を、円盤状素材Wから離間した位置から円盤状素材Wに近づけて円盤状素材Wに押し付けることができるので、ローラ4が円盤状素材Wに押し付けられる当初から、伝達ギア9にバックラッシが生じないようにすることができて、歯車の加工精度を向上することができる。
しかも、伝達ギア9の回転軸心A4とローラ4の回転軸心A2とを偏心可能な偏心カップリング10を用いながらも、その偏心カップリング10に、ローラ4を同心状に一体回転可能に支持する可動軸11を備えて、その可動軸11を両端が可動軸用軸受21を介して支持枠22にて支持された状態で素材支持部3と同期回転させる構成とすることにより、ローラ4の回転軸心A2のブレを抑制することができ、このことによっても、歯車の加工精度を向上することができる。 Accordingly, with thetransmission gear 9 engaged with the synchronous gear 8 sufficiently deeply, the roller 4 that has already been rotated synchronously with the material support portion 3 is brought close to the disk-shaped material W from a position away from the disk-shaped material W. Since the roller 4 can be pressed against the disk-shaped material W, the transmission gear 9 can be prevented from generating backlash from the beginning when the roller 4 is pressed against the disk-shaped material W, and the processing accuracy of the gear can be improved. .
Moreover, while using theeccentric coupling 10 that can eccentrically rotate the rotational axis A4 of the transmission gear 9 and the rotational axis A2 of the roller 4, the roller 4 is supported by the eccentric coupling 10 so as to be integrally rotatable. The movable shaft 11 is configured to rotate in synchronization with the material support portion 3 in a state where both ends of the movable shaft 11 are supported by the support frame 22 via the movable shaft bearings 21. The blurring of the rotational axis A2 can be suppressed, and this also improves the gear machining accuracy.
しかも、伝達ギア9の回転軸心A4とローラ4の回転軸心A2とを偏心可能な偏心カップリング10を用いながらも、その偏心カップリング10に、ローラ4を同心状に一体回転可能に支持する可動軸11を備えて、その可動軸11を両端が可動軸用軸受21を介して支持枠22にて支持された状態で素材支持部3と同期回転させる構成とすることにより、ローラ4の回転軸心A2のブレを抑制することができ、このことによっても、歯車の加工精度を向上することができる。 Accordingly, with the
Moreover, while using the
図10に、本発明の偏心カップリング10に代えて、本発明の偏心カップリング10における可動軸11に相当するものを備えない偏心カップリング40、所謂、シュミットカップリング40を用いた場合の回転塑性加工装置の比較例を示す。
この比較例の場合は、先述のように、ローラ4は、従動プレート41を介してシュミットカップリング40に片持ち状で回転可能に支持されているので、ローラ4の回転軸心A2がぶれ易く、歯車の加工精度を向上し難い。 In FIG. 10, instead of theeccentric coupling 10 of the present invention, rotation using an eccentric coupling 40 that does not include the equivalent of the movable shaft 11 in the eccentric coupling 10 of the present invention, that is, a so-called Schmitt coupling 40 is used. The comparative example of a plastic working apparatus is shown.
In the case of this comparative example, as described above, theroller 4 is supported by the Schmitt coupling 40 via the driven plate 41 so as to be rotatable in a cantilevered manner. Therefore, the rotation axis A2 of the roller 4 is likely to be shaken. It is difficult to improve the processing accuracy of gears.
この比較例の場合は、先述のように、ローラ4は、従動プレート41を介してシュミットカップリング40に片持ち状で回転可能に支持されているので、ローラ4の回転軸心A2がぶれ易く、歯車の加工精度を向上し難い。 In FIG. 10, instead of the
In the case of this comparative example, as described above, the
〔別実施形態〕
(A)従動側リンク機構Lsを構成する複数の従動側リンク15の本数、及び、駆動側リンク機構Ldを構成する複数の駆動側リンク16の本数は、夫々、上記の実施形態において例示した4本に限定されるものではなく、例えば、3本でも良い。
又、上記の実施形態では、各従動側リンク15の一端及び各駆動側リンク16の一端を、同心の枢支軸心a1にて中間プレート13に枢支したが、別々の枢支軸心にて中間プレート13に枢支しても良い。 [Another embodiment]
(A) The number of the plurality of driven-side links 15 constituting the driven-side link mechanism Ls and the number of the plurality of driving-side links 16 constituting the driving-side link mechanism Ld are each 4 illustrated in the above embodiment. It is not limited to a book, For example, three may be sufficient.
Further, in the above embodiment, one end of each drivenside link 15 and one end of each drive side link 16 are pivotally supported on the intermediate plate 13 by a concentric pivot axis a1. It is also possible to pivotally support the intermediate plate 13.
(A)従動側リンク機構Lsを構成する複数の従動側リンク15の本数、及び、駆動側リンク機構Ldを構成する複数の駆動側リンク16の本数は、夫々、上記の実施形態において例示した4本に限定されるものではなく、例えば、3本でも良い。
又、上記の実施形態では、各従動側リンク15の一端及び各駆動側リンク16の一端を、同心の枢支軸心a1にて中間プレート13に枢支したが、別々の枢支軸心にて中間プレート13に枢支しても良い。 [Another embodiment]
(A) The number of the plurality of driven-
Further, in the above embodiment, one end of each driven
(B)ローラ4の外歯成形型4mの軸心方向での長さを、円盤状素材Wに成形する外歯Woの軸心方向の長さよりも短くなるように設定しても良い。この場合、X方向駆動装置26に加えて、加工ユニットUを主軸1の回転軸心A1に沿うZ方向に往復移動させるZ方向駆動装置を設けて、そのZ方向駆動装置によりローラ4をZ方向に移動させることにより、円盤状素材Wにローラ4の外歯成形型4mよりも長い所望の長さの外歯Woを形成することができる。
(B) The length of the roller 4 in the axial direction of the external tooth forming die 4m may be set to be shorter than the length of the external tooth Wo formed in the disk-shaped material W in the axial direction. In this case, in addition to the X-direction drive device 26, a Z-direction drive device that reciprocates the machining unit U in the Z direction along the rotation axis A1 of the main shaft 1 is provided, and the roller 4 is moved in the Z direction by the Z-direction drive device. The external teeth Wo having a desired length longer than the external tooth forming die 4m of the roller 4 can be formed on the disc-shaped material W.
(C)伝達ギア位置保持機構Kを構成するに、図9に示すように、伝達ギア9(図示省略)を、当該伝達ギア9の回転軸心A4を軸心間垂線αから当該軸心間垂線αに直交する方向に設定量偏倚させた位置にて、同期ギア8(図示省略)に噛み合わせた状態で保持するように構成しても良い。
この場合、伝達ギア位置保持機構Kは、上記の実施形態における回転支持フレーム28及び伝達ギア保持用油圧シリンダ29に加えて、回転支持フレーム28を軸心間垂線αと主軸1の回転軸心A1との両方に直交する方向(即ち、Y方向)に位置調整するY方向位置調整部を備えて構成する。又、伝達ギア保持用油圧シリンダ29を、Y方向位置調整部によりY方向での位置が調整された回転支持フレーム28を軸心間垂線αに沿って移動させるように設ける。
図9に示すように、伝達ギア9の回転軸心A4方向視において、伝達ギア9の回転軸心A4の位置を、主軸1(即ち、同期ギア8)の回転軸心A1を中心とする円において、軸心間垂線αとにより形成される中心角βが例えば5°となる半径の延長線上に位置して、伝達ギア9が同期ギア8に噛み合う位置に設定することができる。尚、図9は、ローラ4が終了位置Peに位置する状態を示している。 (C) As shown in FIG. 9, the transmission gear position holding mechanism K is configured so that the transmission gear 9 (not shown) is connected to the rotation axis A4 of thetransmission gear 9 from the axis-center perpendicular α to the axis center. You may comprise so that it may hold | maintain in the state meshed | engaged with the synchronous gear 8 (illustration omitted) in the position biased by the set amount in the direction orthogonal to the perpendicular | vertical (alpha).
In this case, the transmission gear position holding mechanism K includes therotation support frame 28 in addition to the rotation support frame 28 and the transmission gear holding hydraulic cylinder 29 in the above-described embodiment, and the rotation support frame 28 with the axis-center perpendicular α and the rotation axis A1 of the main shaft 1. And a Y-direction position adjusting unit that adjusts the position in a direction orthogonal to both (ie, the Y direction). Further, the transmission gear holding hydraulic cylinder 29 is provided so that the rotation support frame 28 whose position in the Y direction is adjusted by the Y direction position adjusting portion is moved along the axis-center perpendicular line α.
As shown in FIG. 9, when thetransmission gear 9 is viewed in the direction of the rotation axis A4, the position of the rotation axis A4 of the transmission gear 9 is a circle centered on the rotation axis A1 of the main shaft 1 (ie, the synchronous gear 8). , The central angle β formed by the axis-centered perpendicular α is positioned on an extension line of a radius where the central angle β is 5 °, for example, and the transmission gear 9 can be set to a position where the transmission gear 9 meshes with the synchronous gear 8. FIG. 9 shows a state where the roller 4 is located at the end position Pe.
この場合、伝達ギア位置保持機構Kは、上記の実施形態における回転支持フレーム28及び伝達ギア保持用油圧シリンダ29に加えて、回転支持フレーム28を軸心間垂線αと主軸1の回転軸心A1との両方に直交する方向(即ち、Y方向)に位置調整するY方向位置調整部を備えて構成する。又、伝達ギア保持用油圧シリンダ29を、Y方向位置調整部によりY方向での位置が調整された回転支持フレーム28を軸心間垂線αに沿って移動させるように設ける。
図9に示すように、伝達ギア9の回転軸心A4方向視において、伝達ギア9の回転軸心A4の位置を、主軸1(即ち、同期ギア8)の回転軸心A1を中心とする円において、軸心間垂線αとにより形成される中心角βが例えば5°となる半径の延長線上に位置して、伝達ギア9が同期ギア8に噛み合う位置に設定することができる。尚、図9は、ローラ4が終了位置Peに位置する状態を示している。 (C) As shown in FIG. 9, the transmission gear position holding mechanism K is configured so that the transmission gear 9 (not shown) is connected to the rotation axis A4 of the
In this case, the transmission gear position holding mechanism K includes the
As shown in FIG. 9, when the
この場合、ローラ4が終了位置Peに位置する状態を図9に示すように、ローラ4が開始位置Psから終了位置Peに移動する間中、従動プレート12の回転軸心A2方向視において、従動側リンク15の両側の枢支軸心a1,a2を結ぶ直線(図示省略)と駆動側リンク16の両側の枢支軸心a1,a3を結ぶ直線(図示省略)とが交差する状態に維持される。この別実施形態では、各従動側リンク15の一端及び各駆動側リンク16の一端が、同心の枢支軸心a1にて中間プレート13に枢支されているので、従動プレート12の回転軸心A2方向視において、従動側リンク15の両側の枢支軸心a1,a2を結ぶ直線(図示省略)と駆動側リンク16の両側の枢支軸心a1,a3を結ぶ直線(図示省略)とがV字状(以下、「従動側リンク15と駆動側リンク16とがV字状」と記載する場合がある)となる。
ローラ4が円盤状素材Wに押し付けられている状態では、従動プレート12の回転軸心A2に直交する方向に力が作用するが、各従動側リンク15と各駆動側リンク16とがV字状になっていると、中間プレート13の回転軸心A3のふらつきを十分に抑制することができるようになり、それに伴い、従動プレート12の回転軸心A2、即ち、ローラ4の回転軸心A2や、駆動プレート14の回転軸心A4、即ち、伝達ギア9の回転軸心A4のふらつきを十分に抑制することができる。
従って、被加工素材Wの加工精度を効果的に向上することができる。 In this case, as shown in FIG. 9, the state where theroller 4 is located at the end position Pe, while the roller 4 moves from the start position Ps to the end position Pe, the driven plate 12 is driven in the direction of the rotational axis A <b> 2. The straight line (not shown) connecting the pivot axes a1 and a2 on both sides of the side link 15 and the straight line (not shown) connecting the pivot axes a1 and a3 on both sides of the drive side link 16 are maintained in an intersecting state. The In this alternative embodiment, one end of each driven side link 15 and one end of each drive side link 16 are pivotally supported on the intermediate plate 13 by a concentric pivot axis a1. A straight line (not shown) connecting the pivot axes a1 and a2 on both sides of the driven side link 15 and a straight line (not shown) connecting the pivot axes a1 and a3 on both sides of the drive side link 16 in the A2 direction view. It is V-shaped (hereinafter, “the driven side link 15 and the drive side link 16 may be described as V-shaped”).
In a state where theroller 4 is pressed against the disk-shaped material W, a force acts in a direction orthogonal to the rotational axis A2 of the driven plate 12, but each driven side link 15 and each driving side link 16 is V-shaped. Therefore, the wobbling of the rotation axis A3 of the intermediate plate 13 can be sufficiently suppressed, and accordingly, the rotation axis A2 of the driven plate 12, that is, the rotation axis A2 of the roller 4 The wobbling of the rotation axis A4 of the drive plate 14, that is, the rotation axis A4 of the transmission gear 9, can be sufficiently suppressed.
Therefore, the processing accuracy of the workpiece material W can be effectively improved.
ローラ4が円盤状素材Wに押し付けられている状態では、従動プレート12の回転軸心A2に直交する方向に力が作用するが、各従動側リンク15と各駆動側リンク16とがV字状になっていると、中間プレート13の回転軸心A3のふらつきを十分に抑制することができるようになり、それに伴い、従動プレート12の回転軸心A2、即ち、ローラ4の回転軸心A2や、駆動プレート14の回転軸心A4、即ち、伝達ギア9の回転軸心A4のふらつきを十分に抑制することができる。
従って、被加工素材Wの加工精度を効果的に向上することができる。 In this case, as shown in FIG. 9, the state where the
In a state where the
Therefore, the processing accuracy of the workpiece material W can be effectively improved.
(D)駆動プレート14の外周面に、同期ギア8に噛み合う歯を形成して、駆動プレート14を伝達ギア9に兼用しても良い。
(D) Teeth that mesh with the synchronous gear 8 may be formed on the outer peripheral surface of the drive plate 14, and the drive plate 14 may also be used as the transmission gear 9.
(E)ローラ4を-X方向に移動して円盤状素材Wを成形する際のローラ4の開始位置Psや終了位置Peは、適宜変更可能である。例えば、上記の実施形態では、終了位置Peを、ローラ4の回転軸心A2が伝達ギア9の回転軸心A4と軸心間垂線α上において同位置となるように設定したが、ローラ4の回転軸心A2が伝達ギア9の回転軸心A4と軸心間垂線α上において異なるように設定しても良い。
(E) The start position Ps and end position Pe of the roller 4 when the disk-shaped material W is formed by moving the roller 4 in the −X direction can be changed as appropriate. For example, in the above-described embodiment, the end position Pe is set so that the rotational axis A2 of the roller 4 is at the same position as the rotational axis A4 of the transmission gear 9 on the vertical axis α. The rotational axis A2 may be set to be different from the rotational axis A4 of the transmission gear 9 on the vertical axis α between the axes.
(F)被加工素材を塑性加工する形態は、上記の実施形態のように、外周面に外歯Woを成形する形態に限定されるものではなく、例えば、被加工素材の軸心周りに沿って一定のピッチで凹凸を形成する形態でも良い。
又、被加工素材の具体的な例としては、上記の実施形態において例示した如き円盤状素材Wに限定されるものではない。 (F) The form in which the work material is plastically processed is not limited to the form in which the outer teeth Wo are formed on the outer peripheral surface as in the above-described embodiment, and, for example, along the axis of the work material. Alternatively, the concave and convex portions may be formed at a constant pitch.
A specific example of the material to be processed is not limited to the disk-shaped material W as exemplified in the above embodiment.
又、被加工素材の具体的な例としては、上記の実施形態において例示した如き円盤状素材Wに限定されるものではない。 (F) The form in which the work material is plastically processed is not limited to the form in which the outer teeth Wo are formed on the outer peripheral surface as in the above-described embodiment, and, for example, along the axis of the work material. Alternatively, the concave and convex portions may be formed at a constant pitch.
A specific example of the material to be processed is not limited to the disk-shaped material W as exemplified in the above embodiment.
以上説明したように、塑性加工精度を向上し得る回転塑性加工装置を提供することができる。
As described above, it is possible to provide a rotary plastic processing apparatus capable of improving plastic processing accuracy.
1 主軸
2 回転駆動装置(回転駆動手段)
3 素材支持部
4 ローラ
4m 外歯成形型
5 押圧部材(保持部材)
7 制御部(制御手段)
8 同期ギア
9 伝達ギア
10 偏心カップリング
11 可動軸
12 従動プレート
13 中間プレート
14 駆動プレート
15 従動側リンク
16 駆動側リンク
21 可動軸用軸受(軸受)
A1 主軸の回転軸心
A2 可動軸の回転軸心
A3 中間プレートの回転軸心
A4 駆動プレートの回転軸心、伝達ギアの回転軸心
D 押し付け機構
H ワーク保持機構(素材保持機構)
K 伝達ギア位置保持機構
Ld 駆動側リンク機構
Ls 従動側リンク機構
S 同期回転機構
W 円盤状素材(被加工素材)
Wo 外歯
α 軸心間垂線 1Spindle 2 Rotation drive device (Rotation drive means)
3Material support 4 Roller 4m External tooth forming die 5 Pressing member (holding member)
7 Control unit (control means)
8Synchronous gear 9 Transmission gear 10 Eccentric coupling 11 Movable shaft 12 Driven plate 13 Intermediate plate 14 Drive plate 15 Driven side link 16 Driven side link 21 Bearing for movable shaft (bearing)
A1 Axis of rotation of the main shaft A2 Axis of rotation of the movable shaft A3 Axis of rotation of the intermediate plate A4 Axis of rotation of the drive plate, rotation of the transmission gear D Pressing mechanism H Work holding mechanism (material holding mechanism)
K transmission gear position holding mechanism Ld drive side link mechanism Ls driven side link mechanism S synchronous rotation mechanism W disk-shaped material (material to be processed)
Wo external tooth α axis center perpendicular
2 回転駆動装置(回転駆動手段)
3 素材支持部
4 ローラ
4m 外歯成形型
5 押圧部材(保持部材)
7 制御部(制御手段)
8 同期ギア
9 伝達ギア
10 偏心カップリング
11 可動軸
12 従動プレート
13 中間プレート
14 駆動プレート
15 従動側リンク
16 駆動側リンク
21 可動軸用軸受(軸受)
A1 主軸の回転軸心
A2 可動軸の回転軸心
A3 中間プレートの回転軸心
A4 駆動プレートの回転軸心、伝達ギアの回転軸心
D 押し付け機構
H ワーク保持機構(素材保持機構)
K 伝達ギア位置保持機構
Ld 駆動側リンク機構
Ls 従動側リンク機構
S 同期回転機構
W 円盤状素材(被加工素材)
Wo 外歯
α 軸心間垂線 1
3
7 Control unit (control means)
8
A1 Axis of rotation of the main shaft A2 Axis of rotation of the movable shaft A3 Axis of rotation of the intermediate plate A4 Axis of rotation of the drive plate, rotation of the transmission gear D Pressing mechanism H Work holding mechanism (material holding mechanism)
K transmission gear position holding mechanism Ld drive side link mechanism Ls driven side link mechanism S synchronous rotation mechanism W disk-shaped material (material to be processed)
Wo external tooth α axis center perpendicular
Claims (4)
- 軸心方向視で円状の外周面を有する被加工素材を支持する状態で、主軸周りに回転駆動手段により回転駆動される素材支持部と、被加工素材を塑性加工するローラを前記主軸に直交する方向に移動して当該ローラを被加工素材に押し付ける押し付け機構と、前記ローラを前記素材支持部と同期回転させるように、前記主軸の回転を前記ローラに伝達する同期回転機構とが設けられた回転塑性加工装置であって、
前記同期回転機構が、
前記主軸周りに前記素材支持部と一体回転する同期ギアと、
当該同期ギアに噛み合う状態で配設された伝達ギアと、
可動軸に一体回転可能に連結された従動プレート、前記可動軸の外周部に配設されると共に、回転軸心が前記可動軸と偏心し且つ前記従動プレートに回転を伝達可能に従動側リンク機構により前記従動プレートに連結された内径が前記可動軸よりも大径の中間プレート、及び、前記可動軸の外周部に配設されると共に、回転軸心が前記可動軸と偏心し且つ前記中間プレートに回転を伝達可能に駆動側リンク機構により前記中間プレートに連結された内径が前記可動軸よりも大径の駆動プレートを備えた偏心カップリングと、
前記伝達ギアの位置を、前記同期ギアに噛み合わせた状態で保持する伝達ギア位置保持機構とを備えて構成され、
前記偏心カップリングにおいて、前記駆動プレートが前記伝達ギアに同心状で一体回転可能に連結され、且つ、前記可動軸における前記駆動プレートを貫通した端部が前記ローラに同心状で一体回転可能に連結されて、当該偏心カップリングが、前記可動軸を前記主軸に平行にした姿勢で当該可動軸の両端を軸受にて回転可能に支持した状態で設けられ、
前記押し付け機構が、前記可動軸を当該可動軸の回転軸心と前記主軸の回転軸心とを結ぶ軸心間垂線に沿って移動するように設けられている回転塑性加工装置。 In a state of supporting a workpiece having a circular outer peripheral surface as viewed in the axial direction, a material support portion rotated by a rotation driving means around the main shaft and a roller for plastic processing of the workpiece are orthogonal to the main shaft. And a pressing mechanism for moving the roller against the workpiece material, and a synchronous rotation mechanism for transmitting the rotation of the main shaft to the roller so as to rotate the roller synchronously with the material support portion. A rotary plastic working device,
The synchronous rotation mechanism is
A synchronous gear that rotates integrally with the material support around the main shaft;
A transmission gear arranged in mesh with the synchronous gear;
A driven plate coupled to the movable shaft so as to be integrally rotatable, and disposed on an outer peripheral portion of the movable shaft, and a driven side link mechanism in which the rotational axis is eccentric from the movable shaft and the rotation can be transmitted to the driven plate And an intermediate plate having an inner diameter coupled to the driven plate having a larger diameter than the movable shaft, and an outer peripheral portion of the movable shaft, and a rotational axis is eccentric from the movable shaft and the intermediate plate An eccentric coupling provided with a drive plate having an inner diameter coupled to the intermediate plate by a drive side link mechanism so that rotation can be transmitted to the movable shaft;
A transmission gear position holding mechanism that holds the position of the transmission gear in a state of meshing with the synchronous gear;
In the eccentric coupling, the drive plate is concentrically connected to the transmission gear so as to be integrally rotatable, and an end portion of the movable shaft passing through the drive plate is concentrically connected to the roller so as to be integrally rotatable. The eccentric coupling is provided in a state in which both ends of the movable shaft are rotatably supported by bearings in a posture in which the movable shaft is parallel to the main shaft,
A rotary plastic working apparatus in which the pressing mechanism is provided so as to move the movable shaft along an axial center line connecting a rotation axis of the movable shaft and a rotation axis of the main shaft. - 前記偏心カップリングにおいて、前記従動側リンク機構が、一端が前記中間プレートに枢支され且つ他端が前記従動プレートに枢支された複数の従動側リンクを備えて構成されて、それら複数の従動側リンクが互いに平行になる状態で前記可動軸の周方向に分散配置され、前記駆動側リンク機構が、一端が前記中間プレートに枢支され且つ他端が前記駆動プレートに枢支された複数の駆動側リンクを備えて構成されて、それら複数の駆動側リンクが互いに平行になる状態で前記可動軸の周方向に分散配置され、
前記伝達ギア位置保持機構が、前記伝達ギアを、当該伝達ギアの回転軸心を前記軸心間垂線から当該軸心間垂線に直交する方向に設定量偏倚させた位置にて、前記同期ギアに噛み合わせた状態で保持するように構成されている請求項1に記載の回転塑性加工装置。 In the eccentric coupling, the driven side link mechanism includes a plurality of driven side links having one end pivotally supported by the intermediate plate and the other end pivotally supported by the driven plate. A plurality of drive-side link mechanisms, one end of which is pivotally supported by the intermediate plate and the other end of which is pivotally supported by the drive plate. It is configured with drive side links, and the plurality of drive side links are distributed and arranged in the circumferential direction of the movable shaft in a state in which they are parallel to each other,
The transmission gear position holding mechanism moves the transmission gear to the synchronous gear at a position where the rotational axis of the transmission gear is biased by a set amount in a direction perpendicular to the axis-centered perpendicular from the axis-centered perpendicular. The rotary plastic working apparatus according to claim 1, wherein the rotary plastic working apparatus is configured to be held in an engaged state. - 前記ローラの外周面に外歯成形型が備えられ、
前記被加工素材の外周面に外歯を成形して、外歯を有する歯車を製造する請求項1又は2に記載の回転塑性加工装置。 An outer tooth mold is provided on the outer peripheral surface of the roller,
The rotary plastic working apparatus according to claim 1 or 2, wherein external gears are formed on an outer peripheral surface of the workpiece material to produce a gear having external teeth. - 前記主軸と同心状に回転可能な保持部材を前記素材支持部に向けて移動させて、前記素材支持部に支持された被加工素材を前記素材支持部とにより挟持する素材保持機構と、
前記素材保持機構を働かせて、被加工素材を前記素材支持部と前記保持部材とにより挟持する素材保持工程を実行し、前記押し付け機構を働かせて、前記伝達ギア位置保持機構により前記伝達ギアが前記同期ギアに噛み合わされた状態で、前記ローラにより被加工素材を塑性加工する加工工程を実行する制御手段とが設けられている請求項1~3のいずれか1項に記載の回転塑性加工装置。 A material holding mechanism that moves a holding member that can rotate concentrically with the main shaft toward the material support portion, and holds the work material supported by the material support portion with the material support portion;
The material holding mechanism is operated to execute a material holding process for holding the workpiece material between the material support portion and the holding member, the pressing mechanism is operated, and the transmission gear is held by the transmission gear position holding mechanism. The rotary plastic working apparatus according to any one of claims 1 to 3, further comprising a control unit that executes a working process of plastic working the workpiece material by the roller in a state of being engaged with the synchronous gear.
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JP2012230177A JP5866642B2 (en) | 2012-10-17 | 2012-10-17 | Rotary plastic processing equipment |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016019462A1 (en) * | 2014-08-05 | 2016-02-11 | Ker-Train Holdings Ltd. | One-to-one torque coupling |
CN109854695A (en) * | 2019-03-25 | 2019-06-07 | 苏州富强科技有限公司 | A kind of eccentric wheel synchronous rotation driving mechanism |
CH714772A1 (en) * | 2018-11-15 | 2019-09-13 | Grob Ernst Fa | Device and method for cold forming profiling of workpieces. |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022170482A (en) * | 2021-04-28 | 2022-11-10 | ナブテスコ株式会社 | Power transmission device and engagement adjustment device of gear mechanism |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4894773A (en) * | 1972-03-18 | 1973-12-06 | ||
JPS4934937Y1 (en) * | 1973-10-12 | 1974-09-21 | ||
JP2001173671A (en) * | 1999-12-22 | 2001-06-26 | Nippon Piston Ring Co Ltd | Link type coupling |
JP2010284662A (en) * | 2009-06-09 | 2010-12-24 | Nippon Spindle Mfg Co Ltd | Apparatus and method for manufacturing cup-like gear |
-
2012
- 2012-10-17 JP JP2012230177A patent/JP5866642B2/en active Active
-
2013
- 2013-07-29 WO PCT/JP2013/070463 patent/WO2014061330A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4894773A (en) * | 1972-03-18 | 1973-12-06 | ||
JPS4934937Y1 (en) * | 1973-10-12 | 1974-09-21 | ||
JP2001173671A (en) * | 1999-12-22 | 2001-06-26 | Nippon Piston Ring Co Ltd | Link type coupling |
JP2010284662A (en) * | 2009-06-09 | 2010-12-24 | Nippon Spindle Mfg Co Ltd | Apparatus and method for manufacturing cup-like gear |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016019462A1 (en) * | 2014-08-05 | 2016-02-11 | Ker-Train Holdings Ltd. | One-to-one torque coupling |
US10704604B2 (en) | 2014-08-05 | 2020-07-07 | Ker-Train Holdings Ltd. | One-to-one torque coupling |
US11867238B2 (en) | 2014-08-05 | 2024-01-09 | Ker-Train Holdings Ltd. | One-to-one torque coupling |
CH714772A1 (en) * | 2018-11-15 | 2019-09-13 | Grob Ernst Fa | Device and method for cold forming profiling of workpieces. |
WO2020099536A1 (en) * | 2018-11-15 | 2020-05-22 | Ernst Grob Ag | Device and method for the cold-forming shaping of workpieces |
CN109854695A (en) * | 2019-03-25 | 2019-06-07 | 苏州富强科技有限公司 | A kind of eccentric wheel synchronous rotation driving mechanism |
CN109854695B (en) * | 2019-03-25 | 2024-03-22 | 苏州富强科技有限公司 | Synchronous rotation driving mechanism for eccentric wheel |
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