JP5603283B2 - Recessing device - Google Patents

Description

  The present invention relates to a dent processing apparatus, and more particularly to a dent processing apparatus that performs dent processing on an outer surface of a long member such as a rod, a shaft, or a tube.

Conventionally, as a roller forming apparatus for forming a groove or the like on the outer surface of a work, a roller forming apparatus shown in Patent Literature has been known.
This roller forming device is intended to improve the processing accuracy when forming a plurality of grooves, for example, splines, on the side surface of the clutch drum, and in the axial direction on the side surface of a cylindrical body (such as a clutch drum) that is a workpiece. A plurality of extending grooves are formed.
Forming a plurality of grooves extending in the axial direction on the outer peripheral surface of the workpiece by arranging a plurality of rollers around the axis of the cylindrical body that is the workpiece, driving the upper mold and pushing the workpiece between these rollers It becomes.

JP 2008-212248 A

  However, in such a prior art, an axial groove on the outer peripheral surface of the pipe (groove in the moving direction of the upper mold) can be formed, but a groove extending in the circumferential direction or a part of the pipe However, it was impossible to form a recess in the surface. In addition, since the work is pushed into the space formed by the rollers with the upper mold, the apparatus itself is increased in size.

  Therefore, as a result of earnest research, the inventor fixed the shaft body and rotated the roller when forming the recess on the outer peripheral surface of the shaft body, and the axis of the ring-shaped member supporting the roller was the axis of the shaft body. The present invention was completed by discovering that the device configuration can be made compact by making them substantially coincide.

An object of this invention is to provide the dent processing apparatus which can make the whole apparatus compact.
An object of this invention is to provide the dent processing apparatus which can form a dent in a part of outer peripheral surface of a shaft.

The invention according to claim 1 is a cantilever-shaped cylindrical body having a base plate and a base end portion supported on the upper surface of the base plate , and a tip portion protruding horizontally from the base plate by a predetermined length. and projecting arm, a clamp member for clamping a shaft-like workpiece is provided at the distal end of the protruding arms, that the projecting arm is inserted into the ring hole, rotatably supported by the projecting arm A ring-shaped member formed on the inner peripheral surface of the ring-shaped member, a part of which protrudes inward from the inner peripheral surface, and a plurality of rotatable members disposed in the circumferential direction of the inner peripheral surface . It includes a roller, and a ring-shaped member driving means you want to rotate. the ring-shaped member, the workpiece material, a part so as to protrude a predetermined height from the outer peripheral surface of the protruding arms, via the clamping member Te, held by the protruding arms, the Li By rotate the grayed-like member is brought into contact with a plurality of rollers on the outer surface of the workpiece, a recess machining apparatus for forming a desired recess in the portion of the outer surface of the workpiece.
As the clamp member, a simple chuck mechanism or the like can be employed in addition to a clamping mechanism using a wedge piece described later.

According to the first aspect of the present invention, the ring-shaped member is rotated, and a plurality of rollers held on the inner peripheral surface are brought into contact with the outer surface of the workpiece, thereby forming a recess in the outer surface.
The ring-shaped member may be configured to hold a plurality of rows of rollers along the axial direction. In this case, by simultaneously bringing a plurality of rows of rollers into contact with the workpiece, dents can be formed at a plurality of locations on the workpiece at a time.

According to a second aspect of the present invention, the clamp member has a two-piece clamping piece that is inserted into a concave portion formed at the tip end portion of the protruding arm and sandwiches the workpiece between the clamp members. a recess processing apparatus according to claim 1, plugged in with a wedge piece can be narrowed gap in the thickness direction between the clamping pieces between the inner wall surface of the strip and the recess.
The clamp member that holds the workpiece in the ring hole of the ring-shaped member inserts a wedge piece between the sandwiching piece and the protruding arm when the workpiece is sandwiched between the two sandwiching pieces. To fix. Therefore, the workpiece can be firmly fixed, and the clamp (clamping) of the workpiece can be easily released by extracting the wedge piece after the processing is completed. Furthermore, by using the wedge piece, an external force can be applied to the workpiece in a substantially uniform manner in the full length direction.

A third aspect of the present invention is the dent processing apparatus according to the second aspect , wherein the wedge piece is provided so as to be movable forward and backward in the longitudinal direction of the protruding arm.
Since the wedge piece is configured to advance and retract along the longitudinal direction of the protruding arm, the overall configuration can be made more compact. Moreover, since the workpiece is sandwiched, the structure is easy to attach and detach.

According to invention of Claims 1-3 , when performing a dent process with respect to the outer surface of a workpiece, a dent process can be performed in the arbitrary positions in the circumferential direction of the outer surface. Further, during the processing, the rotating shaft of the ring-shaped member and the axis of the member to be processed can be arranged substantially coaxially, and the entire apparatus can be reduced in size. Further, since the two clamping pieces are locked (fixed) by the wedge pieces as the clamping mechanism, the clamping of these clamping pieces can be started / released by a small external force.

It is a perspective view which shows the dent processing apparatus which concerns on Example 1 of this invention. It is a side view which shows the dent processing apparatus which concerns on Example 1 of this invention. It is a front view which shows the dent processing apparatus which concerns on Example 1 of this invention. It is a top view which shows the dent processing apparatus which concerns on Example 1 of this invention. It is a perspective view which shows the protrusion arm of the dent processing apparatus which concerns on Example 1 of this invention. It is a side view which shows the protrusion arm of the dent processing apparatus which concerns on Example 1 of this invention. It is a perspective view which shows the roller of the dent processing apparatus which concerns on Example 1 of this invention. It is a front view which shows the roller of the dent processing apparatus which concerns on Example 1 of this invention. It is a disassembled perspective view which shows the clamp member of the dent processing apparatus which concerns on Example 1 of this invention.

  Hereinafter, a dent processing apparatus according to an embodiment of the present invention will be specifically described with reference to the drawings.

As shown in FIGS. 1 to 9, the dent machining apparatus according to Embodiment 1 of the present invention has a rectangular base plate 11 that is horizontally fixed to a predetermined height position of a gantry (not shown). Yes. A base end portion of the projecting arm 12 is fixed to the upper surface of the base plate 11, and a distal end portion of the projecting arm 12 projects horizontally from the base plate 11 by a predetermined length like a cantilever. A clamp member 13 which will be described later is disposed at the protruding tip of the protruding arm 12.
That is, the projecting arm 12 as a whole is formed of a cylindrical body having a predetermined length or a cylindrical body with a part thereof cut out, and a cross section extending along a part of the outer peripheral surface (tip portion) along the length direction. A U-shaped groove 14 is formed. The groove 14 opens in the long side direction of the rectangular base plate 11 and is formed over the entire length of the protruding arm 12, and the depth thereof is substantially the same as the radius of the protruding arm 12, and the width thereof is the protruding arm. It is about half of the diameter of 12. As shown in FIG. 9, in the groove 14, particularly in the groove 14 on the tip end side of the projecting arm 12, the upper holding piece 15 </ b> A and the lower holding piece 15 </ b> B are vertically overlapped. It is housed via a shim plate. Further, the wedge piece 16 is inserted between the upper clamping piece 15A and the inner wall surface (upper wall surface) of the groove 14. An inclined groove 15AA is formed on the upper surface of the upper clamping piece 15A so that the wedge piece 16 is inserted.

  The wedge piece 16 is provided in the groove through the link mechanism so as to be movable back and forth along the extending direction of the groove (along the axial direction of the projecting arm 12). The link mechanism includes an in-groove link 17 whose tip is connected to the rear end of the tapered wedge piece 16 whose thickness decreases toward the front end, and the front end of which is pin-coupled to the rear end of the intra-groove link 17. And an outer groove link 18. The rear end of the outer groove link 18 is pin-coupled to the front end of the piston rod 21 of the air cylinder 20 fixed to the upper surface of the base plate 11. The air cylinder 20 is disposed in parallel to the side of the protruding arm 12. When the piston rod 21 of the air cylinder 20 protrudes, the in-groove link 17 slides in the groove 14 toward the front end through the outer groove link 18 that swings in the horizontal plane with the pin 18A as a fulcrum, and the wedge. The piece 16 is inserted between the upper clamping piece 15A and the upper wall surface of the groove 14 (the tapered end portion of the wedge piece 16 is inserted into the inclined groove 15AA). On the contrary, when the piston rod 21 is pulled into the cylinder body, the wedge piece 16 is retracted inside the groove 14 and is extracted from the gap (the tip tapered portion comes out of the inclined groove 15AA).

  As the workpiece W, a round bar or a cylindrical body (pipe) is used. For example, a workpiece W that is a round bar having a predetermined length is sandwiched between an upper sandwiching piece 15A and a lower sandwiching piece 15B that are divided into two vertically. That is, when these upper and lower pair of sandwiching pieces 15A and 15B overlap with each other, a substantially rectangular parallelepiped plate-like block is formed. Thus, a holding groove (concave portion) 22 having a C-shaped cross section or a semicircular or arcuate cross section is formed. The holding groove 22 having an arcuate cross section (bottle shape) is open on the side, and a round bar W, which is a work piece having a circular cross section, is clamped almost in the entire length direction and is held horizontally. To do. Therefore, a part of the outer surface of the round bar W (angle range of less than 180 degrees) protrudes from the side surfaces of the pair of sandwiching pieces 15A and 15B by a predetermined height.

A rotating head 31 as a ring-shaped member is rotatably supported at the protruding end of the protruding arm 12. That is, the rotary head 31 is rotatably supported via a bearing (not shown) on the outer surface of the protruding arm 12 protruding in a cantilever shape from the base plate 11. The rotary head 31 is formed of a cylindrical body in which a plurality of rings, a spacer, and a support ring are integrated, and has a gear 32 that is expanded in a flange shape at the base end portion.
Specifically, the pressing ring 33, the first ring 34, the spacer ring 35, the second ring 36, the first support ring 37, the second support ring 38, and the gear ring 39 are coaxially overlapped in order from the front end side, for example, inserted. It is integrated by fixing with bolts. As a result, the rotary head 31 rotatably supported by the protruding arm 12 is formed of a cylindrical body having a ring hole 40 penetrating in the axial direction. In this case, the axis of the rotary head 31 can be the same as the axis of the protruding arm 12. The bearings are disposed on the support rings 37, 38 and the like.

Further, as shown in FIGS. 7 and 8, a plurality of rollers 50 are arranged at equal intervals along the circumferential direction on the inner peripheral surface of each ring hole 40 of the first ring 34 and the second ring 36. ing. Each roller 50 is a cylindrical body, and is mounted on the first ring 34 and the second ring 36 so that the rotation center axis thereof is parallel to the rotation center axis of the rotary head 31 that is the cylindrical body.
Each roller 50 has an outer peripheral surface protruding from the inner peripheral surfaces of the first ring 34 and the second ring 36 toward the inner side of the ring hole 40 by a predetermined height. , 36 are rotatably attached. The protrusion amount (height / distance from the inner circumferential surface of the ring to the outer circumferential surface of the roller in the radial direction) can be set to an arbitrary value by adjusting the diameter of the roller 50 to be attached. Moreover, although the protrusion height can also be made the same in all the rollers 50, it can also differ in each. In particular, when the diameter of each roller 50 is increased one by one or for each roller group consisting of several rollers 50 toward the ring circumferential direction (rotating direction of the rotary head 31), the predetermined depth is set. The recess D can be formed in a plurality of stages. As a result, the processing load acting on the motor 61 can be reduced, and the impact when the roller 50 comes into contact with the round bar W can be reduced to suppress the deformation of the dent forming portion.
Further, the interval between the rings 34 and 36 holding the roller 50 and the number of the rings 34 and 36 can be appropriately changed according to the interval and the number of the recesses D formed in the round bar W which is a workpiece.
And the mechanism (ring-shaped member drive mechanism) which drives and rotates the rotary head 31 which is this cylindrical body is comprised as follows. That is, it has a motor 61 mounted on the lower surface of the base plate 11 and a gear 62 fixed to the tip of the output shaft of the motor 61, and this gear 62 is a gear 32 of the gear ring 39 of the rotary head 31. Is engaged. By adjusting these gear ratios and the like, the rotary head 31 can be driven to rotate in both forward and reverse directions at a predetermined speed.

The dent processing apparatus according to the above configuration operates as follows.
That is, the round bar W is inserted into the recess 22 by the sandwiching pieces 15A and 15B, the air cylinder 20 is turned on to cause the piston rod 21 to protrude, and the wedge pieces 16 are connected to the upper sandwiching piece 15A and the arm 12 through the links 17 and 18. The round bar W is fixed at a predetermined circumferential direction position and a predetermined length direction position by being inserted between the inner wall surface of the groove 14 and held horizontally. At this time, a part of the outer peripheral surface of the round bar W is set to protrude outward from the outer peripheral surface of the protruding arm 12 by a predetermined height in the radial direction.
When the motor 61 is turned on, the rotary head 31 rotates at a predetermined speed via the gear 62 and the gear ring 39. Then, the plurality of rollers 50 respectively held by the first ring 34 and the second ring 36 come into contact with the outer surface of the round bar W at each position. As a result of this contact, the outer surface of the round bar W is plastically deformed at the contact position of the round bar W, and a desired recess D is formed.
That is, the rotating head 31 having a rotating shaft parallel to the axis of the round bar W is rotated with respect to the horizontally held round bar W, and the whole is protruded inward from the inner peripheral surface of the rotating head 31. The outer surface of the round bar W is plastically deformed by continuously bringing a plurality of rollers 50 arranged annularly into contact with the outer surface of the round bar W. A recess D having a predetermined shape is formed at a predetermined position on the outer surface of the round bar W.
It is also possible to perform the dent processing again by clamping the round bar W once subjected to the dent processing with the clamp member 13 again. Further, instead of the round bar W, a square bar having an oval, rectangular or hexagonal cross section can be processed. Furthermore, the number of annular roller rows and their spacing can be arbitrary.

  The present invention is extremely useful in the process of recessing the outer surface of a solid round bar W, a hollow pipe, or other workpiece having a circular cross section.

11 Base plate,
12 protruding arm,
13 Clamp member,
14 Groove of protruding arm,
15A upper clamping piece,
15B Lower clamping piece,
16 wedge pieces,
31 rotating head,
32 gears,
40 ring holes,
50 rollers,
61 motor,
62 Gear,
W Work material (round bar),
D Dent.

Claims (3)

A base plate ,
The base end portion on the upper surface of the base plate is supported, tip protrudes horizontally by a predetermined length from the base plate, and the projecting arm is cantilever cylindrical body,
A clamp member that is provided at the tip of the protruding arm and clamps the shaft-shaped workpiece;
A ring-shaped member rotatably supported by the projecting arm by inserting the projecting arm through the ring hole;
A plurality of rotatable rollers disposed on an inner peripheral surface of the ring-shaped member, a part of which protrudes inward from the inner peripheral surface and disposed in a circumferential direction of the inner peripheral surface ;
And a ring-shaped member driving means you want to rotate. The ring-shaped member,
The workpiece is held by the projecting arm via the clamp member so that a part of the workpiece projects from the outer peripheral surface of the projecting arm by a predetermined height.
A dent processing apparatus that forms a desired dent in a part of the outer surface of the workpiece by rotating the ring-shaped member and bringing a plurality of rollers into contact with the outer surface of the workpiece. The clamp member is inserted into a recess formed at the tip of the projecting arm, and has a two-part clamping piece for sandwiching the workpiece between the clamp member, and the clamping piece and the inner wall surface of the recess. dent processing apparatus according to claim 1, plugged in with a wedge piece can be narrowed gap in the thickness direction between the clamping pieces between. The dent processing apparatus according to claim 2 , wherein the wedge piece is provided so as to be movable back and forth in the longitudinal direction of the protruding arm.

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