JP6145830B2 - Work supply device - Google Patents

Description

  The present invention relates to a workpiece supply apparatus.

  As an apparatus for supplying a workpiece into a machining apparatus, for example, there is one described in Patent Document 1. This apparatus supplies gears to be processed to a gear processing apparatus, and is provided with a swivel body for supplying gears. A holder for holding a gear is formed on one end side and the other end side of the swivel body. When the rotating body is rotated 180 degrees to one side while holding the gear in each holder, the gear before processing is supplied to the processing position set in the gear processing apparatus, and when the processing of the gear is finished, 180 degrees. Rotate to the other side to return the gear to the replacement position, remove it from the holder, and set a new gear.

JP 2000-117541 A

  However, since such a supply device uses a revolving body that holds a plurality of workpieces, a large space is required around the gear machining device. In addition, since the work reaches the machining position from the exchange position via the arc-shaped path, the work supply path becomes longer than the straight path. As a result, there is also a problem that the conveyance time becomes long. Therefore, the supply device has poor work efficiency and is not suitable for mass production.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a workpiece supply apparatus that can save space and reduce the workpiece conveyance time.

  The workpiece supply apparatus according to the present invention includes a first workpiece holding member that is movable between an exchange position at which a gear serving as a workpiece can be exchanged and a machining position at which the gear can be machined by a shaving cutter. The second work holding member movable between the exchange position and the machining position, the first work holding member, and the second work holding member are arranged along the same plane with an exchange position and a machining position. A guide unit that guides the workpiece to be reciprocated linearly, and guides the work holding members to place the gears at the same position at least in the exchange position and the machining position. And a mechanism for meshing the gear and the shaving cutter.

  In the workpiece supply apparatus, the gear is rotatably supported on each workpiece holding member, and the gear is configured to mesh with the shaving cutter by rotating on the workpiece holding member. Can be.

  Each said workpiece | work supply apparatus WHEREIN: The said shaving cutter shall engage | work from the upper side with respect to the said gear supported by the said 1st workpiece holding member or the 2nd workpiece holding member.

  In each of the workpiece supply devices, the guide unit guides an operation in which one of the workpiece holding members reciprocates in a direction perpendicular to the rotation axis of the gear between the processing position and the replacement position, The other of the workpiece holding members guides an operation of reciprocating in the perpendicular direction between the exchange position and the machining position, and during the operation, each workpiece holding member is connected to the rotation axis. They can be guided in such a manner that they are separated in a parallel direction and allow the workpiece holding members to pass each other.

  The workpiece supply apparatus according to the present invention includes a first workpiece holding member that is movable between an exchange position at which a workpiece can be exchanged and a machining position at which the workpiece can be machined, and the exchange position and the machining position. The second workpiece holding member movable between the first workpiece holding member, the first workpiece holding member, and the second workpiece holding member are linearly reciprocated between the exchange position and the machining position along the same plane. And a guide unit that guides the workpiece holding members to place the workpieces at the same position at least at the machining position among the replacement position and the machining position.

  In the workpiece supply apparatus, when the workpiece holding members pass while reciprocating, the workpiece holding members move in directions away from each other, and the workpiece holding members are moved at the replacement position and the machining position. The guide unit may be configured to move in a direction opposite to the separation.

  In any one of the above-described workpiece supply apparatuses, the guide unit includes a first cam rail and a second cam rail that extend in a direction in which the first and second workpiece holding members reciprocate linearly, and the first cam rail and The second cam rail is configured so that both end portions thereof are close to each other and have a portion separated from each other at one place between the both end portions, and the first and second work holding members are the first And configured to move along the second cam rail.

  In any one of the work supply devices, the first work holding member extends in the reciprocating direction, and the first rack for reciprocating the first work holding member and the second work holding member are A second rack extending in a reciprocating direction for reciprocating the second work holding member; a rotatable pinion meshing with both the first rack and the second rack; the first rack and the Drive means for reciprocating one of the second racks in the extending direction of the rack may be further provided.

  A gear machining apparatus according to the present invention includes a workpiece supply device according to any one of the above, a core pushing shaft that rotatably supports the workpiece at the machining position, and the workpiece having a gear shape and machining the workpiece. And a shaving cutter.

  In the gear machining apparatus, the shaving cutter may be engaged with the workpiece supported by the first workpiece holding member or the second workpiece holding member from above to perform machining.

  The work supply device for a gear machining apparatus according to the present invention is movable between an exchange position at which a gear-shaped work can be exchanged and a machining position at which the work can be machined by a shaving cutter. The first workpiece holding member, the second workpiece holding member movable between the exchange position and the machining position, and the first workpiece holding member linearly from the exchange position to the machining position along the same plane. A guide unit that reciprocates and guides the second work holding member to reciprocate linearly from the machining position to the replacement position, and when the two work holding members pass while reciprocating, Each work holding member includes a guide unit configured to move in a direction away from each other.

  In the gear machining apparatus workpiece supply apparatus, the guide unit includes a first cam rail and a second cam rail extending in a direction in which the first and second workpiece holding members reciprocate linearly, and the first cam rail and The second cam rail is configured so that both end portions thereof are close to each other and have a portion separated from each other at one place between the both end portions, and the first and second work holding members are the first And configured to move along the second cam rail.

  In any one of the gear machining device workpiece supply devices described above, the first workpiece holding member extends in the reciprocating direction, and the first rack for reciprocating the first workpiece holding member; and the second workpiece A holding member extends in the reciprocating direction, a second rack for reciprocating the second work holding member, a rotatable pinion meshing with both the first rack and the second rack, and the first Drive means for reciprocating one of the one rack and the second rack in the extending direction of the rack may be further provided.

  The workpiece supply apparatus according to the present invention includes a first workpiece holding member that is movable between an exchange position at which a workpiece can be exchanged and a machining position at which the workpiece can be machined, and the exchange position and the machining position. The second workpiece holding member movable between the first workpiece holding member, the first workpiece holding member, and the second workpiece holding member are reciprocated between the exchange position and the machining position along the same plane. A guide unit that guides each workpiece holding member to place the workpiece at the same position at least at the machining position of the replacement position and the machining position, and the guide unit includes the guide unit, The first and second work rails have a first cam rail and a second cam rail extending in a reciprocating direction, and both end portions of the first cam rail and the second cam rail are close to each other. The first and second work holding members are reciprocated by the first and second cam rails so that the both work holding members are reciprocated by the first and second cam rails. However, when passing each other, each workpiece holding member moves in a direction away from each other, and in each of the exchange position and the machining position, each workpiece holding member moves in a direction opposite to the separation. Yes.

  In the workpiece supply apparatus, the workpiece holding members can be configured to move in opposite directions between the machining position and the exchange position by a single driving means.

  In the workpiece supply device, the first rack extends in the direction in which the first cam rail extends, and the first rack for moving the first workpiece holding member between the processing position and the replacement position, and the direction in which the second cam rail extends. And a second rack for moving the second work holding member between the processing position and the exchange position, and a pinion that meshes with both the first rack and the second rack, The driving means can reciprocate one of the first rack and the second rack in a direction in which the rack extends.

  In the workpiece supply apparatus, the workpiece may be placed on the first workpiece holding member and the second workpiece holding member such that a rotation axis thereof is oriented in a direction perpendicular to a direction in which the cam rails extend. .

  A gear machining apparatus according to the present invention is one of the above-described workpiece supply devices, a core pushing shaft that rotatably supports the workpiece at the machining position, and the workpiece has a gear shape to machine the workpiece. A shaving cutter.

  In the gear machining apparatus, the shaving cutter can be configured to perform machining by engaging with a workpiece supported by the first workpiece holding member or the second workpiece holding member from above.

  The present invention provides a first workpiece holding member that can move between an exchange position for exchanging a workpiece and a machining position at which the workpiece can be machined, and is movable between the exchange position and the machining position. A second work holding member, a first guide rail that guides the movement of the first work holding member and extends linearly, and is arranged in parallel with the first guide rail; A second guide rail that guides the movement and extends linearly, and both work holding members that pass through the respective guide rails are capable of reciprocating in opposite directions. At least in the machining position, the work holding member guides the work unit so as to hold the work in the same position.

  According to this configuration, since the workpiece support that conveys the workpiece moves along the linear guide rail, the conveyance distance between the exchange position and the machining position can be shortened. In addition, the space occupied by the entire apparatus can be reduced. Furthermore, since two workpiece supports are provided and reciprocate in different directions, one workpiece support can be arranged at the exchange position and the other workpiece support can be arranged at the machining position. For this reason, every time each workpiece support moves in one direction, the workpiece can be processed and replaced at the same time. Therefore, workpiece exchange, supply, and machining can be performed efficiently. When the workpiece support is in the exchange position, a new workpiece is placed, or the machined workpiece and the unmachined workpiece are exchanged. In addition, the processing position in the present invention indicates not only a position where a workpiece is processed but also a standby position before processing the workpiece.

  The above apparatus can be configured as follows. A first work holding member that holds the work is provided on the first work support, and a second work holding member that holds the work is provided on the second work support. In the guide unit, when the workpiece supports pass each other while reciprocating, the workpiece holding members are moved in the first direction so as to be separated from each other, and in the replacement position and the processing position, the workpiece holding members are moved. Can be provided with a moving mechanism for moving the lens in a second direction opposite to the first direction.

  According to this configuration, when the workpiece supports pass each other, the workpiece holding members are moved in the first direction away from each other, and are moved in the second direction opposite to the replacement position and the machining position. The Therefore, although both work holding members are separated from each other when moving along the guide rail, they move in the directions close to each other at the machining position and the exchange position, so that the work can be arranged at the same position. . As a result, the machining apparatus can be accessed at the same position for both workpiece holding members, and machining can be performed at the same position.

  In the work supply device, the first rack attached to the first work support, the second rack attached to the second work support and arranged in parallel with the first rack, and the first and second racks A pinion that meshes with both of them and a drive unit that reciprocates one of the first and second racks in the longitudinal direction can be further provided. According to this configuration, since one pinion meshes with two racks, for example, if the first rack is moved by the driving means, the second rack can be moved in the direction opposite to the first rack. it can. Therefore, the two workpiece supports can be reciprocated simultaneously in opposite directions with one driving means. As a result, space saving and cost reduction can be achieved.

  In the workpiece supply apparatus, a position shift prevention mechanism can be further provided that abuts against the workpiece when each workpiece support moves from the exchange position to the machining position and separates from the workpiece at the exchange position and the machining position. According to this configuration, when the workpiece support moves from the replacement position to the machining position, the positional deviation prevention mechanism abuts on the workpiece, so that the displacement of the moving workpiece can be prevented. On the other hand, since the displacement prevention mechanism is separated from the workpiece at the exchange position and the machining position, the workpiece can be exchanged or the workpiece can be machined.

  When the workpiece is a rotatable member, such as a gear, the workpiece supply device can be configured as follows. That is, it is possible to further provide a positioning mechanism for positioning the work at a predetermined rotational position on each work support when each work support is in the exchange position. According to this configuration, since the rotational position of the workpiece at the replacement position can be positioned, when the workpiece is disposed at the machining position, machining by the machining apparatus can be started at the predetermined rotational position. For example, in a gear processing device, it is necessary to mesh a gear to be processed with a gear-type cutter that processes the gear, so if the gear to be processed can be arranged at a predetermined rotational position, The gear can be immediately engaged with the gear.

  According to the workpiece supply device of the present invention, it is possible to save space and shorten the workpiece conveyance time.

It is a perspective view which shows one Embodiment of a workpiece | work supply apparatus. It is a perspective view which shows the state which removed the workpiece | work holding member from the apparatus of FIG. It is a perspective view of the 1st work holding member. FIG. 4 is an exploded perspective view of FIG. 3. It is sectional drawing in alignment with the advancing direction when a 1st workpiece holding member exists in an exchange position. It is sectional drawing in alignment with the advancing direction when it exists in the process position of a 1st workpiece holding member. It is sectional drawing in the middle of advancing of the 1st workpiece holding member. It is the sectional view on the AA line of FIG. FIG. 6 is a sectional view taken along line B-B in FIG. 5. It is CC sectional view taken on the line of FIG. It is a top view which shows operation | movement of a workpiece holding member.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment in which a workpiece supply apparatus according to the invention is applied as a supply apparatus for a gear machining apparatus will be described with reference to the drawings. FIG. 1 is a perspective view of a workpiece supply apparatus according to the present embodiment.

  As shown in FIG. 1, the workpiece supply apparatus is mounted on a gear machining apparatus including a shaving cutter S, and includes a pair of workpiece supports 1 and 2 that hold a gear as a workpiece W. The two workpiece supports 1 and 2 are movably supported on the base 3. These work supports 1 and 2 are configured to reciprocate in opposite directions along guide units disposed on the base 3. When either one of the workpiece supports 1 and 2 is disposed at a machining position in the center in the width direction of the base 3 substantially below the shaving cutter S, the workpiece W is machined by the gear machining apparatus. More specifically, a core pushing shaft (not shown) fixes the work W in the work supports 1 and 2, and in this state, the shaving cutter S meshes with the work W, and both of them rotate, Processed. On the other hand, when either one of the workpiece supports 1 and 2 is disposed at the exchange position in the center in the width direction of the base 3 substantially below the workpiece W indicated by the imaginary line in the drawing, the processed workpiece is removed. It is replaced with a raw workpiece.

  In the present embodiment, for convenience of explanation, the work support disposed on the left side of FIG. 1 is referred to as a first work support 1, and the work support disposed on the right side is referred to as a second work support 2. I will do it. And the member relevant to the 1st workpiece support 1 attaches the word "first", and the member relevant to the 2nd workpiece support 2 attaches the word "second", and distinguishes. . At this time, “1” is added to the head of a member related to the first work support 1 and “2” is attached to the head of a member related to the second work support 2. . Further, the workpiece traveling direction X means a direction approaching / separating from the gear machining apparatus. In this traveling direction X, the machining position side is referred to as the front side, and the replacement position side is referred to as the rear side, and is orthogonal to the traveling direction. The direction is referred to as the width direction Y.

  As shown in FIG. 1, a first fixing plate 31 that extends vertically is attached to the front end of the base 3, and a rod-shaped first release protrusion 311 is provided at the center in the width direction, as will be described later. Is attached. On the other hand, a vertically extending second fixing plate 32 is attached to the rear end of the base 3, and a rod-like second release protrusion 321 described later is attached to the center of the fixing plate 32 in the width direction. ing. Further, a positioning mechanism 7 for the workpiece W is attached to the upper side.

  First and second racks 11 and 21 are fixed to the front ends of the first and second workpiece supports 1 and 2, respectively, and extend along the traveling direction X of the workpiece supports 1 and 2. ing. Both racks 11 and 21 extend in parallel while penetrating the first fixed plate 31, and are arranged at a predetermined interval with their teeth facing each other. And the pinion 4 which meshes | engages with the tooth | gear of both racks 11 and 21 is being fixed to the predetermined position between these racks 11 and 12 so that rotation is possible. Further, a hydraulic cylinder 5 extending in parallel with the first rack 11 is fixed to the front end portion of the first work support 1. The hydraulic cylinder 5 includes a fixed portion 51 fixed to the first fixed plate 31 and a movable portion 52 that expands and contracts along the traveling direction X with respect to the fixed portion 51. The end is fixed to the first work support 1.

  For example, when the movable part 52 extends with respect to the fixed part 51 from the state of FIG. 1, the first work support 1 is pushed toward the rear side. At this time, since the first rack 11 also moves rearward together with the first work support 1, the pinion 4 rotates accordingly. As a result, the second rack 21 moves in the opposite direction to the first rack 11, that is, in the front side, and the second work support 2 moves together with the second rack 21 in the front side. Thus, when the hydraulic cylinder 5 operates, the first and second workpiece supports 1 and 2 reciprocate in opposite directions. Both racks 11 and 21 are covered with cylindrical rack covers 12 and 22 to prevent dust during gear processing. A case 41 that accommodates the pinion 4 is supported in the middle of the rack covers 12 and 22.

  Next, the work supports 1 and 2 and the guide unit for reciprocating them will be described with reference to FIGS. 2 is a perspective view showing a state in which the work support is removed from the apparatus of FIG. 1, FIG. 3 is a perspective view of the first work support, and FIG. 4 is an exploded perspective view of FIG.

  As shown in FIG. 2, a guide unit that guides the movement of the workpiece support 1 is arranged on the base 3. The guide unit includes a pair of guide rails 61 and 62 extending in the traveling direction X, that is, the first guide rail 61 that guides the first work support 1 in the traveling direction X, and the second work support 2 in the traveling direction X. A second guide rail 62 for guiding is arranged in parallel. Further, the first and second cam rails 63 and 64 are arranged along the traveling direction X so as to sandwich the guide rails 61 and 62 in the width direction. As will be described later, the first cam rail 63 is for moving the first work holding member 13 on the first work support 1 in the width direction Y, and is wide at the machining position and the exchange position. The width is narrow. More specifically, the first guide rail 61 is formed in a concave shape in plan view so that the distance between the first guide rail 61 and the first guide rail 61 is narrow at the machining position and the exchange position, and widens between them. And the cam surface which the cam follower 144 of the 1st workpiece | work support body 1 contact | abuts on the surface facing the 1st guide rail 61 so that it may mention later. In this cam surface, the boundary between the narrow portion and the wide portion is continuous with a smooth curved surface. The second cam rail 64 moves the second work holding member 23 on the second work support 2 in the width direction Y, and has a target shape with both the guide rails 61 and 62 interposed therebetween. Sensors 33 and 34 for detecting the positions of the workpiece supports 1 and 2 are attached to both ends of the base 3 in the width direction at the exchange positions.

  As shown in FIGS. 3 and 4, the first workpiece support 1 includes a workpiece holding member 13 that holds the workpiece W and a movable plate 14 that supports the workpiece holding member 13. The workpiece holding member 13 and the movable plate 14 are disposed on the base portion 15. The base 15 is formed in a rectangular shape in plan view, and the above-described first rack 11 and the hydraulic cylinder 5 are connected to the front end. A first guide member 151 having a U-shaped cross section that engages with the first guide rail 61 is attached to the bottom surface. A rectangular notch 154 is formed on the surface of the base 15 that faces the first cam rail 63. On the upper surface of the base portion 15, width direction guide rails 152 and 153 extending in the width direction Y are respectively attached to both ends in the traveling direction across the notch portion 154. As shown in FIG. 4, a spring receiving plate 156 for supporting a spring 145 described later is attached to the upper surface of the base portion 15 at the end opposite to the notch portion 154. Further, a sensor 155 that is detected by the sensor 33 described above is attached to the end of the base portion 15 facing the first cam rail 63 at the end on the replacement position side.

  The movable plate 14 is formed in a rectangular shape in plan view, and is supported so as to be movable in the width direction on the base 15 described above. On the bottom surface of the movable plate 14, second and third guide members 141 and 142 having a U-shaped cross section that are engaged with the width direction guide rails 152 and 153 of the base portion 15 are attached. Further, as shown in FIG. 4, a support member 143 having a pentagonal shape in plan view is fixed between the second and third guide members 141 and 142. On the lower surface of the support member 143, an extending portion extending downward through the notch 154 is formed at an end in the width direction facing the first cam rail 63 side (see FIG. 9), and a first portion is formed at the lower end thereof. A roll-shaped cam follower 144 that abuts the cam surface of the cam rail 63 is rotatably attached. In addition, a pair of springs 145 are inserted into the support member 143 from the end surface opposite to the cam follower 144. That is, these springs 145 are stretched between the support member 143 and the above-described spring receiving plate 156, and the cam follower 144 is always urged toward the first cam rail 63 by the springs 145. Therefore, the support member 143 can move in the width direction in the notch portion 154 of the base portion 15 according to the thickness of the first cam rail 63.

  Next, the workpiece holding member 13 will be described in more detail with reference to FIG. FIG. 5 is a cross-sectional view along the advancing direction when the first work holding member is at the replacement position, FIG. 6 is a cross-sectional view along the advancing direction when it is at the machining position, and FIG. As shown in FIG. 4, the work holding member 13 is formed in a rectangular parallelepiped shape extending in the traveling direction, and is disposed at the end on the second work support 2 side in the width direction of the movable plate 14. The work holding member 13 has a rectangular parallelepiped main body 130, and a semicircular arc-shaped support 131 that supports a gear is detachably attached to the upper end of the work holding member 13, and the rotation axis of the work W advances. It is placed so as to face a direction perpendicular to the direction X. As shown in FIG. 6, the workpiece W is rotated inside the workpiece holding member 13 by vibration when the first workpiece holding member 1 is moved, thereby preventing a positional deviation from a state where teeth described later are positioned. A misalignment prevention mechanism is provided. This misalignment prevention mechanism includes an upright bar-shaped first arm 132 disposed at the front end and an upright bar-shaped second arm 133 disposed at the rear end. Both arms 132 and 133 are rotatably fixed to shaft members 1321 and 1331 provided at intermediate portions in the vertical direction, and can swing in the traveling direction around the shaft members 1321 and 1331. The lower ends of the arms 132 and 133 are connected by a connecting rod 134 that passes through the front and rear of the work holding member 13 and extends in the advancing direction, so that the arms 132 and 133 swing in conjunction with each other. ing. A pressing member 135 protruding rearward is detachably attached to the upper end portion of the first arm 132, and the pressing member 135 presses against the tooth tips around the front side of the work W in the support portion 131. It is designed to be separated. On the other hand, a spring 136 is attached to the lower end portion of the first arm 132 between the main body portion 130 and the lower end portion of the first arm 132 is urged forward by the spring 136 in the clockwise direction on the paper. It is rocking. 5 to 7, the screw denoted by reference numeral 9 is a screw that adjusts the pressing degree of the pressing member 135.

  As shown in FIG. 5, the second release protrusion 321 described above is attached to the second fixed plate 32 at a position facing the upper end of the second arm 133, and the first work support 1 is in the exchange position. In this case, the second release protrusion 321 presses the upper end of the second arm 133. Thereby, the upper end of the second arm 133 swings forward, and accordingly, the first arm 132 swings forward against the spring 136. As a result, the pressing member 135 is separated from the workpiece W. Similarly, when the first workpiece support 1 is in the processing position, the first release protrusion 311 of the first fixing plate 31 presses the lower end portion of the first arm 132 rearward as shown in FIG. As a result, the first arm 132 swings against the spring 136, and the pressing member 135 is separated from the workpiece W. Further, when the first work support 1 is moving between the exchange position and the machining position, as shown in FIG. 7, the lower end portion of the first arm 132 is biased forward by the spring 136. The pressing member 135 moves to the rear side and presses the workpiece W. Thereby, the position shift of the workpiece | work W is prevented. In addition, the structure of the 1st workpiece support body 1 mentioned above is the same as the structure of the 2nd workpiece support body 2, and the difference with the 2nd workpiece support body 2 is arrangement | positioning of the width direction. That is, the arrangement of each member is the target in the width direction in both work supports 1 and 2. Therefore, detailed description of the second workpiece support 2 is omitted.

  Next, the gear positioning mechanism 7 as a workpiece will be described with reference to FIG. 8 is a cross-sectional view taken along line AA in FIG. As shown in FIG. 5, the gear positioning mechanism 7 described above is attached to the second fixing plate 32 above the second release protrusion 321. The positioning mechanism 7 is for smoothly meshing the teeth of the workpiece with the teeth of the shaving cutter S during gear processing, and is a rectangular tube-shaped base attached to the upper end of the second fixed plate 32. 71 and a rod-like movable portion 72 projecting forward from the base portion 71. A through hole 711 extending in the traveling direction is formed in the base portion 71, and the movable portion 72 is inserted through the through hole 711 and biased forward by a spring 712 disposed in the through hole 711. .

  As shown in FIG. 8, on the front side of the movable portion 72, a rod-like protrusion 73 that can enter between the teeth of the workpiece W is detachably attached. On the other hand, a regulating plate 74 extending in the width direction is attached to the rear side of the movable portion 72. A sensor 75 is disposed on one end of the regulating plate 74 in the width direction. In the initial state shown in the drawing, the sensor 75 and one end of the regulating plate 74 are in contact with each other. When the workpiece S is inserted into the support portion 131, the tooth tip of the workpiece S once comes into contact with the projection portion 73. However, the projection portion 73 is normally attached to the workpiece S due to the elasticity of the projection portion 73 and the rotation of the workpiece S. It will be located between the teeth. However, if the tip of the tooth bites into the protrusion 73 and the movable part 72 is pushed rearward and the sensor 75 and the regulating plate 74 are separated from each other for a predetermined time, the sensor 75 detects an abnormality in the gear position. Then, the operator is prompted to reset the workpiece S. On the other hand, the other end of the restricting plate 74 is in contact with the stopper 76 of the base 71 in the initial state, and is positioned in the initial state.

  Next, changes in the position in the width direction of the work supports 1 and 2 will be described with reference to FIGS. 9 and 10. FIG. 9 is a cross-sectional view taken along line B-B in FIG. 5, and is a cross-sectional view in the width direction when the first work support 13 is at the machining position and the exchange position. FIG. 10 is a cross-sectional view taken along the line CC of FIG. 6, and is a cross-sectional view in the width direction when the first and second work supports 1, 2 are moving in the traveling direction. As shown in FIG. 9, in the first work support 1 at the replacement position and the machining position, the cam follower 144 is pressed in the width direction by the wide portion of the end portion of the first cam rail 63. Thereby, the movable plate 14 is moved toward the center in the width direction, and the work holding member 13 is positioned at the center in the width direction of the base 3. In the exchange position and the machining position, the above-described release protrusions 311 and 321 can contact the first and second arms 132 and 133 of the workpiece holding member 13 or the positioning mechanism 7 can contact the workpiece W. At this time, the sensor 155 of the base 15 of the work support 1 is arranged to face the sensor 33 of the base 3, thereby detecting the replacement position of the first work support 1. In addition, although illustration is abbreviate | omitted, the 2nd workpiece support body 2 is similarly pushed in the center side of the width direction in the process position and the exchange position, and the 2nd workpiece support body 2 is the width direction in the base 3. It comes to be located in the center of.

  On the other hand, as shown in FIG. 10, when the work supports 1 and 2 are moving between the machining position and the replacement position, the cam followers 144 and 244 come into contact with the narrow portions of the cam rails 63 and 64. The movable plates 14 and 24 are pushed outward in the width direction under the urging force of the springs 145 and 245. As a result, the movable plates 14 and 24 of the workpiece supports 1 and 2 are separated from each other until they do not come into contact with each other, and the workpiece supports 1 and 2 do not interfere with each other. As a result, when the workpiece supports 1 and 2 are moving in the traveling direction X or in the opposite direction, the workpiece supports 1 and 2 can pass each other without contacting.

  As shown in FIG. 10, the upper surfaces of the movable plates 14 and 24 of the work supports 1 and 2 are covered with a fixed cover 81 over the entire surface in the traveling direction. In the center of the fixed cover 81 in the width direction, a long and narrow opening is formed through which the work holding members 13 and 23 protrude. Then, movable covers 82 and 83 are attached to the work holding members 13 and 23 so as to cover the openings. At this time, the first movable cover 82 provided on the first work holding member 13 is disposed slightly below the second movable cover 83 provided on the second work holding member 23, and both movable The covers 82 and 83 do not interfere with each other.

  Next, the operation of the workpiece supply apparatus configured as described above will be described with reference to FIG. FIG. 11 is a plan view showing the operation of the work holding member. First, in the initial position shown in FIG. 11A, the first work support 1 is disposed at the machining position, and the second work support 2 is disposed at the replacement position. In this state, the work holding members 13 and 23 are arranged in the center of the base 3 in the width direction. The workpiece W is processed at the processing position, and the unprocessed workpiece W is disposed on the workpiece holding member 23 of the second workpiece support 2 at the replacement position. At this time, the position shift prevention mechanism for the workpiece W is released, and the position of the teeth is fixed to the second workpiece support 2 by the positioning mechanism 7.

  When the machining of the workpiece W is finished at the machining position, the hydraulic cylinder 5 is driven to extend, and the workpiece supports 1 and 2 are moved as shown in FIGS. 11 (b) and 11 (c). That is, the base 15 of the first work support 1 moves straight rearward toward the replacement position, and the base 15 of the second work support 2 moves straight forward toward the machining position. At this time, the cam followers 144 and 244 are pressed along the cam surfaces of the cam rails 63 and 64 by the springs 145 and 245 to move the movable plate 14 outward in the width direction. 23 also moves in the direction of the arrow to the outside in the width direction. And as shown in FIG.11 (d), both the workpiece holding members 13 and 23 move straightly in the opposite direction, passing each other. During this movement, the workpiece W is released from the positioning mechanism 7, but the position of the tooth positioned by the misalignment prevention mechanism is maintained. Thereafter, as shown in FIG. 11E, the cam followers 144 and 244 are pushed in by the protruding portions of the cam rails 63 and 64, and the work holding members 13 and 23 move in the direction of the arrow toward the center in the width direction. After that, as shown in FIG. 11 (f), the first work support 1 is disposed at the replacement position, and the second work support 2 is disposed at the machining position. Thereafter, the position shift prevention mechanism is released at the machining position and the workpiece W is machined, and the machined workpiece and the unmachined workpiece are exchanged at the exchange position. Further, if the hydraulic cylinder 5 is driven to contract, the first and second workpiece supports 1 and 2 return to the state shown in FIG.

  As described above, according to the present embodiment, since the work supports 1 and 2 move along the linear guide rails 61 and 62, the conveyance distance between the exchange position and the machining position can be shortened. it can. In addition, the space occupied by the entire apparatus can be reduced. Further, since the two workpiece supports 1 and 2 reciprocate in different directions, if one workpiece support is arranged at the exchange position, the other workpiece support is arranged at the machining position. Therefore, each time the workpiece supports 1 and 2 move in one direction with at least one simple drive source, the workpiece W can be processed and replaced at the same time. Accordingly, the work W can be exchanged, moved, and processed efficiently.

  In addition, since the workpiece holding members 13 and 14 are movable in the width direction and are positioned at one central position in the width direction at the machining position and the exchange position, the workpiece W can be exchanged and machined at the same position in the width direction. it can. Therefore, it is not necessary to move the machining device in accordance with the positions of the workpiece holding members 13 and 14 or change the workpiece exchange position, and the workpiece can be machined and exchanged efficiently. Moreover, since each workpiece | work holding member 13 and 14 can be spaced apart in the width direction, both can be prevented from interfering, and, thereby, they can pass each other at the time of reciprocation.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning. For example, in the above embodiment, the workpiece holding members 13 and 14 are moved to one central position in the width direction at both the machining position and the exchange position, but the present invention is not limited to this, and the exchange position is the width. There are two locations in the direction, and the workpiece holding member may be moved to the center position in the width direction only at the processing position.

  In the above embodiment, the work holding member 13 is moved in the width direction using the cam rail 63 and the cam follower 144, but other methods may be used. For example, the work holding member may be provided with a rail that moves in the width direction.

  The present invention can be used when supplying a workpiece to a machining apparatus.

DESCRIPTION OF SYMBOLS 1 1st work support body 13 1st work holding member 2 2nd work support body 23 2nd work holding member 61 1st guide rail 62 2nd guide rail 63 1st cam rail 64 2nd cam rail 11 1st rack 21 2nd rack 4 Pinion 5 Hydraulic cylinder (drive means)

Claims (4)

A first work holding member movable between an exchange position at which a gear as a work can be exchanged and a machining position at which the gear can be machined by a shaving cutter;
A second workpiece holding member movable between a working position and the exchange position,
The first work holding member and the second work holding member are guided so as to linearly reciprocate between an exchange position and a machining position along the same plane, and among the exchange position and the machining position, At least in the machining position, the guide unit that guides the work holding members to arrange the gears at the same position;
A mechanism for meshing the gear and the shaving cutter;
Bei to give a,
The mechanism includes a protrusion that can enter between teeth of the gear, and the gear and the shaving cutter mesh when the protrusion enters between the teeth. In this way, the workpiece supply device is configured such that the rotational position of the gear is positioned .
The gear is rotatably supported on each workpiece holding member,
The workpiece supply device according to claim 1, wherein the gear is configured to mesh with the shaving cutter by rotating on each workpiece holding member.   3. The workpiece supply device according to claim 1, wherein the shaving cutter performs processing by engaging with the gear supported by the first workpiece holding member or the second workpiece holding member from above. The guide unit is
One of the workpiece holding members guides the reciprocating motion in the direction perpendicular to the rotation axis of the gear between the machining position and the exchange position;
The other of the workpiece holding members guides the reciprocating motion in the perpendicular direction between the exchange position and the machining position; and
4. The workpiece according to claim 1, wherein, during the operation, the workpiece holding members are separated from each other in a direction parallel to the rotation axis to guide the workpieces to pass each other. 5. Feeding device.