TW202116481A - Lathe carrier and clamping machine with lathe carrier - Google Patents

Abstract

The present invention provides a lathe carrier and a clamping machine with the lathe carrier. The lathe carrier is used to clamp a workpiece, and the clamping machine with the lathe carrier is capable of clamping or releasing the workpiece automatically. The clamping machine includes a lathe carrier, a rotating member, and a driving unit. The lathe carrier includes a first sleeve member, a second sleeve member, three clamping units, and a carrier member. Each clamping unit includes an elastic member and a clamping member that is rotatably positioned on the second sleeve member. When the driving unit makes the rotating member move in a circular motion to rotate the carrier member, the carrier member drives the first sleeve member to rotate relative to the second sleeve member, and the rotation of the first sleeve member further makes the clamping member eccentrically rotate relative to the second sleeve member, thereby reducing or enlarging the clamping opening to clamp or release the workpiece. The elastic member is inserted into the slot of the clamping member. When three clamping members eccentrically rotate to reduce the clamping opening, the elastic members make three clamping members press the workpiece to a similar extent to prevent the displacement of the workpiece during clamping. Therefore, the clamping machine with the lathe carrier can automatically clamp or release the workpiece without manual operation, leading the clamping machine having benefits of time-saving and labor-saving.

Description

Clamping device and clamping machine table containing the clamping device

This creation is about a clamping machine that contains a clamping device, especially a clamping machine for grinding workpieces.

The grinder is used to process the outer surface of the workpiece, and the rotating processing of long workpieces (such as rod-shaped or tubular workpieces) usually uses a clamping device to cover the outer surface of the long workpiece, and use the top center to press against the two ends of the workpiece , And then use the rotation of the clamping tool to drive the long workpiece to rotate for grinding. The conventional clamping device, such as Figure 1 of CN206393454U patent, has a support ring, a first set screw, two second set screws, a key and a lock nut. The support ring has three radially arranged screw holes , After the first set screw is screwed into one of the screw holes, it is then screwed with the lock nut and the key in order. The lock nut prevents the key and the first set screw from loosening, and the two second set screws are screwed to When using the other two screw holes, place the support ring on the workpiece, and adjust the clamping diameter by rotating the first and two second clamping screws. After the workpiece is clamped, the key is tightly clamped The keyway of the workpiece is used to transmit torque, and the two second set screws are pressed against the workpiece.

However, the conventional clamping device must manually insert the workpiece, and the first clamping screw and the two second clamping screws must be manually rotated when clamping or releasing the workpiece, which makes the entire clamping process time-consuming and labor-intensive. . If you want to put the workpiece into the clamping device and automate the process of clamping the workpiece by the clamping device to reduce manpower, you must use a mechanical arm to penetrate the workpiece into the clamping device, and then set the first tightening screw and two second screws. Tighten the top screw to clamp the workpiece. However, if the tightening degrees of the first tightening screw and the two second tightening screws are not equal, or the roundness of the workpiece is insufficient, the degree of tightness of the first tightening screw and the two second tightening screws to the workpiece is different , It may cause the position of the workpiece to shift and cause processing failure or defective products, or even damage the clamping device or the workpiece. Furthermore, since the first tightening screw and the two second tightening screws extend toward the center of the support ring, it is not easy to align the workpiece when the robot arm penetrates the workpiece into the clamping device, causing the workpiece to collide with the first tightening device. The screw and the two second tightening screws may cause the workpiece insertion failure or even damage the clamping device or the workpiece.

One of the objectives of this creation is to provide a clamping device and a clamping machine including a clamping device, which has a high compatibility with the workpiece to be clamped. Even if the roundness of the workpiece is insufficient, the clamping device still The workpiece can be clamped accurately and stably.

Another item of this creation is to provide a clamping device and a clamping machine suitable for grinders, which can clamp or release workpieces in an automated manner.

In order to achieve the above or other objectives, the present invention provides a clamping device, which includes a first socket, a second socket that can rotate relative to the first socket, and a plurality of clamping units, each clamping unit having a clamping The fixing block, the pushing part, and the elastic part. The clamping blocks define a clamping opening in the direction of the axis of the clamping device. Each clamping block is eccentrically rotatable on the second socket, and each clamping block The clamping opening can be reduced or enlarged during eccentric rotation. Each clamping block has a slot hole that penetrates each clamping block. The pusher passes through the slot and is arranged on the first socket, and the pusher can be placed in Displacement in the slot and push the clamping block to rotate eccentrically. The elastic piece is arranged on the clamping block. The elastic piece can provide elastic buffering to make the clamping block rotate eccentrically to reduce the clamping opening. The degree to which each clamping block presses the workpiece toward the clamping opening quite.

In this way, the clamping device provided by this creation can drive the clamping block by rotating the first socket and the second socket, and the clamping block rotates eccentrically to clamp or loosen the workpiece, which is convenient for the operation and use of automated equipment. At the same time, when clamping the workpiece, the clamping block can be clamped to the workpiece by the buffering effect of the elastic member. When the roundness of the workpiece is low, the clamping block can still effectively clamp the workpiece, which improves The degree of equipment automation also increases the allowable tolerance of applicable workpieces, which is of great practical value.

This creation provides a clamping device and a clamping machine including a clamping device. The clamping device is used to clamp a workpiece, and the clamping machine can automatically clamp or release the workpiece. The first embodiment of this creation is a kind of For a clamping machine including a clamping device, please refer to Figures 1 to 4. This embodiment includes a clamping device 10, a housing 20, a dial 30, a detector 40, 40', a bearing 50, a pusher Arrival unit and drive unit (not shown).

Please refer to FIGS. 2 to 4, the clamping device 10 includes a first socket 11, a second socket 12, three clamping units, a driving part 13, and a top center 14. The first socket 11 has a first shaft hole 111, a first end surface 112, a second end surface 113, and a perforation 114. The first shaft hole 111 axially penetrates the first socket 11, and the perforation 114 is located in the first socket 11 The outer diameter surface enables the cutting fluid remaining in the clamping device to flow out of the perforation 114 during the grinding process. The driving member 13 is assembled and fixed to the second end surface 113 of the first socket 11 by several screws, and the driving member 13 is Ring-shaped, the driving member 13 has a driving part 131, a driving hole 132 and a balancing part 133. The driving part 131 and the balancing part 133 are positioned opposite to each other, and both the driving part 131 and the balancing part 133 extend radially away from the axis of the clamping device 10 The radial length of the driving part 131 is greater than the radial length of the balancing part 133. The driving hole 132 axially penetrates the driving part 131. The driving hole 132 is a U-shaped slot hole, and the U-shaped opening of the driving hole 132 faces radially outward. The second socket 12 is sleeved on the top center 14. The second socket 12 includes a fixing ring 121, a supporting ring 122, a locking ring 123, a fastener 124, and a cushion 125. The supporting ring 122 is located on the fixing ring 121 and the lock. Between the fixing rings 123, the cushion 125 is in the shape of a hollow cylinder. The fastener 124 passes through the fixing ring 121 and then further penetrates the cushion 125 and is screwed to the support ring 122. As shown in Figure 4, the cushion 125 is clamped Placed between the fixed ring 121 and the supporting ring 122, the supporting ring 122 of the second sleeve 12 has a sleeve section 1221 and a blocking section 1222, and three first blocking surfaces 1223 are arranged on the blocking section 1222 at intervals The diameter of the first shaft hole 111 of the first socket 11 is larger than the outer diameter of the fixed ring 121 and the outer diameter of the socket section 1221 of the support ring 122, so the first socket 11 can penetrate the first The shaft hole 111 is sleeved in the sleeve section 1221 of the fixed ring 121 and the supporting ring 122, the locking ring 123 is detachably screwed to the supporting ring 122, and the three second blocking surfaces 1231 are arranged on the locking ring 123 with spacer rings. Outer diameter surface, the position of each first stop surface 1223 is adjacent to each second stop surface 1231, and each first stop surface 1223 is on the same plane as each second stop surface 1231 That is to say, the three first blocking surfaces 1223 and the three second blocking surfaces 1231 form three paired groups, and each paired group has a first blocking surface 1223 and a first blocking surface 1223 adjacent to each other and located on the same plane. A second stop surface 1231. In addition, the inner ring surface 1224 of the support ring 122 further has a first convex ring portion 1225 protruding radially toward the axis of the clamping device 10, and the locking ring 123 further has an axial support ring 122 protruding second convex ring portion 1232, the outer diameter of the second convex ring portion 1232 is smaller than the diameter of the inner ring surface 1224 of the supporting ring 122, therefore, when the locking ring 123 is assembled and fixed to the supporting ring 122, the second convex ring The portion 1232 can penetrate the support ring 122 and press the bearing 50 toward the first convex ring portion 1225, so that the bearing 50 is positioned between the second sleeve 12 and the top center 14, and the bearing 5 0 enables the second socket 12 to rotate relative to the top center 14. Please refer to Figures 2 and 5, each clamping unit includes a clamping block 15, a pushing piece 16, a positioning piece 17 and an elastic piece 18. The three clamping blocks 15 are in the same direction as the axis of the clamping device 10 The clamping opening 151 is defined. The clamping opening 151 is the space between the axis line and the three clamping blocks 15 for clamping the workpiece. The positioning member 17 passes through the clamping block 15 and is screwed to the second socket 12 The fixing ring 121 enables the clamping block 15 to rotate eccentrically with respect to the fixing ring 121 using the positioning member 17 as a fulcrum. It should be noted that the surface of the clamping block 15 facing the clamping mouth has its own centroid, and the positioning The position of the piece 17 passing through the fixing block 15 deviates from the centroid of the surface of the fixing block on the side facing the clamping opening. When the fixing block 15 rotates around the positioning member 17, the surface of the fixing block on the side facing the clamping opening will eccentrically rotate and rotate eccentrically. The clamping opening 151 can be reduced or enlarged so that the clamping opening 151 can clamp or release the workpiece. The clamping block 15 has a slot hole 152. The slot hole 152 axially penetrates the clamping block 15, and the pusher 16 passes through the slot hole 152 and is screwed. Connected to the first socket 11, please refer to Figures 3 and 5. The elastic member 18 is a plate-shaped elastic piece. The elastic member 18 is located in the slot 152 of the clamping block 15. The hole wall of the slot 152 has two recesses. The two ends of the elastic member 18 are inserted into the groove 1521 in the groove 1521. The elastic member 18 has a top surface 181 and a bottom surface opposite to each other. The top surface 181 can abut against the pushing member 16, and the bottom surface of the elastic member 18 and the slot 152 There is a space between the hole walls for the elastic deformation of the elastic member 18. Therefore, when the pushing member 16 pushes against the top surface 181 of the elastic member 18, the elastic member 18 is elastically deformed and slightly recessed between the bottom surface and the hole wall of the slot 152 Between the space.

Please refer to FIGS. 1 to 5, the housing 20 has a turntable 21, and a driving unit (not shown) in the housing 20 can drive the turntable 21 to rotate the turntable 21 relative to the housing 20. The toggle member 30 is inserted into the turntable 21, and the toggle member 30 has a rod portion 301, and the rod portion 301 axially penetrates the driving hole 132 of the driving member 13. The detectors 40 and 40' are arranged on the housing 20 at intervals, and the detectors 40 and 40' face the outer diameter surface of the driving member 13 to detect the driving portion 131 of the driving member 13. The pushing unit has a power element 60 and a push rod 61. The end surface of the push rod 61 faces the outer diameter surface of the second socket 12, and the power element 60 can extend the push rod 61 and push against the first stop of the support ring 122 The stop surface 1223 and the second stop surface 1231 of the locking ring 123.

Please refer to Figures 4 to 6, in the clamping process of the clamping machine in the first embodiment of this creation, first, a mechanical arm (not shown) is used to put the workpiece 90 in the clamping opening 151 of the clamping device 10 and The inner diameter of the fixing ring 121 of the second sleeve 12 is larger than the diameter of the workpiece 90, as shown in Figure 4, so as to prevent the workpiece 90 from colliding with the fixing ring 121 during insertion. At this time, the three clamps The fixed block 15 is in the released state, as shown in Fig. 5, and since the diameter of the clamping opening 151 is approximately equal to the inner diameter of the fixing ring 121 of the second socket 12, the workpiece 90 is easy to be aligned and not aligned during insertion. Will collide with the clamping block 15, and then the drive unit (not shown) drives the turntable 21 to rotate the turntable 21 in a second direction (for example, clockwise) relative to the housing 20, and is installed on the top center of the housing 20 14 Keep it unrotated, the turntable 21 drives the turning member 30 to make a circular movement in the second direction with the rotation axis of the turntable 21 as the center. Since the turning member 30 passes through the driving hole 132 of the driving portion 131, the turning member 30 acts During circular motion, the driving member 13 can be rotated in the second direction, and the driving part 131 and the balance part 133 in relative positions can make the overall center of gravity of the driving member 13 close to or exactly on the axis line of the clamping device, which can be maintained during rotation. Balance, avoid the vibration caused by inertia, and because the driving member 13 is screwed to the first socket member 11, the driving member 13 drives the first socket member 11 to rotate in the second direction, and the first socket member 11 is clamped by The fixed block 15 further drives the second socket 12 to rotate in the second direction. When the detector 40 detects the driving part 131, as shown in FIG. 5, the turntable 21 stops rotating, so that the dial 30 and The clamping device 10 stops rotating. At this time, the first blocking surface 1223 of the support ring 122 and the second blocking surface 1231 of the locking ring 123 face the push rod 61, and the push rod 61 is extended by the power member 60 of the pushing unit And push against the first stop surface 1223 and the second stop surface 1231, and then the drive unit drives the turntable 21 to rotate in the first direction (for example, counterclockwise), so that the dial 30 pushes the driving member 13 and the first socket The member 11 rotates in the first direction. Because the first blocking surface 1223 and the second blocking surface 1231 are pushed by the push rod 61 and cannot rotate, the second socket 12 cannot rotate. Therefore, when the first socket When 11 is rotated in the first direction relative to the second socket 12, the first socket 11 drives the pusher 16 to move in the first direction in the slot 152, and the displacement of the pusher 16 further pushes the three clamping blocks 15 respectively Use the positioning member 17 as a fulcrum to rotate eccentrically in the first counterclockwise direction. The eccentric rotation of the three clamping blocks 15 can reduce the clamping opening 151 to clamp the workpiece 90 tightly. When the detector 40' detects the driving part 131, As shown in Figure 6, the clamping device 10 completes the process of clamping the workpiece, the turntable 21 stops rotating, so that the dial 30 and the clamping device 10 stop rotating, and the three clamping blocks 15 stop eccentric rotation and maintain the tightness. The clamped state of the clamped workpiece 90. Then the power member 60 of the pushing unit is used to retract the push rod 61 and away from the first stop surface 1223 and the second stop surface 1231, and then the drive unit drives the turntable 21 to continue to rotate in the first direction to push the dial 30 The clamping device 10 rotates in the first direction, so that the clamping device 10 drives the workpiece 90 to rotate for subsequent grinding operations.

It is worth mentioning that the workpiece may have insufficient roundness during the production process, that is, the radius of the workpiece may be different in size, and the elastic member 18 of the clamping device 10 of this creation can make three clamps The fixing block 15 presses the workpiece 90 toward the clamping opening 151 to the same extent, that is, the force of the three clamping blocks 15 pressing the workpiece 90 toward the clamping opening 151 tends to be close, so that one or several of them will not occur due to insufficient roundness. The clamping block does not touch the work piece or only touches the work piece slightly. Furthermore, the elastic member 18 can prevent the clamping block 15 from overly pressing the work piece due to the surface height difference after the clamping is completed, so as to prevent the work piece 90 from being clamped. When the three clamping blocks 15 are different in urgency, the offset is generated, and even the clamping device 10 or the workpiece 90 is damaged. The detailed description is as follows. During the clamping process, the first socket 11 drives the moving member 16 in the groove Displacement in the hole 152, and the displacement of the pusher 16 can push the clamping block 15 to rotate eccentrically. In addition, the displacement of the pusher 16 in the slot 152 also pushes against the top surface 181 of the elastic member 18, along with the clamping block 15 gradually rotates to press the work piece 90, the resistance of the pushing member 16 pushing the clamping block 15 to rotate also gradually increases, resulting in the pushing force of the pushing member 16 against the elastic member 18 gradually increasing when the pushing member 16 is displaced, and when the pushing member 16 is pushed against the elastic member 18 When the pushing force is sufficient to deform the elastic member 18, there is a space for the elastic member 18 to be elastically deformed between the bottom surface of the elastic member 18 and the hole wall of the slot 152, so that the displacement of the pushing member 16 can push the elastic member 18 toward the bottom surface. The bending deformation further buffers the thrust generated by the displacement of the pushing member 16 so as to prevent the pushing member 16 from continuing to push the clamping block 15 so that the clamping block 15 excessively presses the workpiece 90 and causes the clamping device or the workpiece to be damaged. Even if one of the three clamping blocks 15 abuts against the surface part with a larger radius on the workpiece, the elastic deformation of the elastic member 18 can buffer the thrust generated by the displacement of the pushing member 16, so as to prevent the clamping block 15 from continuing to rotate and becoming overly tight. The workpiece 90, while the other two clamping blocks 15 can still be pushed by the displacement of the pusher 16 to continue to rotate and press the workpiece 90. Therefore, when the process of clamping the workpiece is completed, the three clamping blocks 15 can effectively clamp the workpiece. The mouth 151 clamps the workpiece 90, that is, the three clamping blocks 15 press the workpiece 90 toward the clamping mouth 151 to the same extent, so as to prevent the workpiece 90 from shifting due to the different urgency of the three clamping blocks 15 during clamping, and even As a result, the clamping device 10 or the workpiece 90 is damaged.

After the grinding operation is completed, when the detector 40' detects the driving portion 131, the turntable 21 stops rotating, so that the dial 30 and the clamping device 10 stop rotating. At this time, the first stop surface 1223 of the support ring 122 And the second stop surface 1231 of the locking ring 123 faces the push rod 61, and the power member 60 of the push unit is used to extend the push rod 61 and push it against the first stop surface 1223 and the second stop surface 1231, and then The driving unit drives the turntable 21 to rotate in the second direction (for example, clockwise), so that the rotating member 30 pushes the driving member 13 and the first socket member 11 to rotate in the second direction. Because of the first stop surface 1223 and the second stop The stop surface 1231 is pushed by the push rod 61 and cannot rotate, so the second socket 12 cannot rotate. Therefore, when the first socket 11 rotates in the second direction relative to the second socket 12, the first socket The connecting member 11 drives the pushing member 16 to move in the second direction in the slot 152. The displacement of the pushing member 16 further pushes the three clamping blocks 15 to rotate eccentrically in the second direction with the positioning member 17 as a fulcrum. The three clamping blocks The eccentric rotation of 15 can enlarge the clamping opening 151 to release the workpiece 90. When the detector 40 detects the driving part 131, the clamping device 10 completes the process of releasing the workpiece, and the turntable 21 stops rotating, so that the dial 30 and the driving member 13 and the first socket 11 stop rotating, so that the three clamping blocks 15 stop eccentrically rotating and maintain the released state.

The clamping device 10 of the clamping machine according to the first embodiment of the invention can be replaced with pads 125 of different axial lengths according to processing requirements to change the axial length of the clamping device 10. Please refer to Figures 2 and 4 , As long as the fastener 124 screwed to the support ring 122 is loosened, the user can replace the pad 125 from the through hole 114 of the first socket 11, and then tighten and screw the fastener 124 to the support ring 122. It is not necessary to disassemble the entire clamping device 10 to complete the replacement. In other embodiments of this creation, the clamping machine of this creation may have various clamping groups of different sizes, and each clamping group has a driving part, a first socket, a clamping unit and a fixing ring, which need to be replaced. When clamping the set, as long as the fasteners screwed to the support ring are removed, the fasteners, cushion parts, fixing ring, first socket, driving part and clamping unit can be removed together to change different sizes The clamping group.

In this embodiment, the push rod 61 can extend and push against the first stop surface 1223 of the support ring 122 and the second stop surface 1231 of the locking ring 123. In other possible embodiments of the invention, the push rod 61 may be extended and approached instead of directly pushing against the first stop surface 1223 and the second stop surface 1231. When the turning member 30 pushes the driving member 13 and the first socket member 11 to rotate, only the extended push rod 61 can block the rotation of the support ring 122 and the locking ring 123, and still prevent the second socket 12 from rotating, which has a similar effect to the first embodiment of the present invention. In addition, the push rod 61 may only extend and push against one of the first stop surface 1223 or the second stop surface 1231, and the push rod 61 can still have the effect of blocking the rotation of the second socket 12.

In this embodiment, the driving hole of the driving member is a U-shaped hole, and the U-shaped opening of the driving hole faces radially outwards, so that when parts need to be replaced, the driving member can be easily removed. There are other possibilities in this creation. In the embodiment, the driving hole may be an O-shaped hole. As long as the driving member can be easily removed, the creation is not limited to this. In addition, in other possible embodiments of the present creation, the driving member may not have a driving part and a balancing part. As long as there is a driving hole for the dial to pass through, the dial can still push the driving member to rotate. Example similar use effect.

In this embodiment, the dial is inserted into the turntable, the dial has a rod, and the rod axially penetrates the driving hole of the driving member. In other possible embodiments of this creation, the dial may be fixed to the driving member, and the driving hole is changed to be provided on the turntable, so that the rod of the dial can pass through the driving hole of the turntable. When the turntable rotates, the turntable It can still drive the dial to rotate, and has a similar use effect as the above-mentioned embodiment.

In this embodiment, the number of clamping units is three. In other possible embodiments of the invention, the clamping units may be set to other numbers, as long as the workpiece can be clamped without causing the workpiece to be in the clamping process. The creation is not limited to this.

Please refer to Figures 7-9. The clamping machine of the second embodiment of this creation is roughly the same as the first embodiment shown in Figures 1 to 6, so the second embodiment of this creation roughly adopts the first embodiment of this creation. In the symbol of an embodiment, the elastic member 18a uses a tension spring instead of a plate-shaped elastic piece, and the elastic force of the elastic member 18a is sufficient to pull the clamping block 15 to eccentrically rotate and press against the workpiece 90. One end of the elastic piece 18a is arranged on the end surface 1211 of the fixing ring 121 of the second socket 12, and the other end of the elastic piece 18a is arranged on the outer side surface 153 of the clamping block 15. In the second embodiment of the present invention, the pushing piece 16 Displacement in the slot 152 to push the clamping block 15 to eccentrically rotate to a position where the elastic piece 18a can pull the clamping block 15, and then use the pulling force of the elastic piece 18a to further pull the clamping block 15 to rotate eccentrically in the first direction to press the workpiece 90. The workpiece 90 can be clamped for further processing. Therefore, during the entire clamping process of the pushing member 16 of the second embodiment of the present creation, the tension of the elastic member 18a is used to make the clamping block 15 press the workpiece 90, which can prevent some of the clamping blocks 15 from not touching or having only light weight. If the workpiece 90 is touched, the workpiece 90 is unevenly stressed and deviated, causing damage to the clamping device or the workpiece. Therefore, when the process of clamping the workpiece is completed, the three clamping blocks 15 press the workpiece 90 toward the clamping opening 151 to the same degree, so as to avoid the deviation of the workpiece 90 due to the different urgency of the three clamping blocks 15 during clamping. , Even causing damage to the clamping device 10 or the workpiece 90.

In this embodiment, one end of the elastic piece 18a is arranged on the end surface 1211 of the fixing ring 121 of the second socket 12, and the other end of the elastic piece 18a is arranged on the outer side surface 153 of the clamping block 15. There are other possibilities in this creation. In the embodiment, the other end of the elastic member 18a may be arranged on the outer diameter surface of the clamping block 15. As long as the clamping block 15 can be pulled to rotate eccentrically and reduce the clamping opening 151, the present creation is not limited to this.

Please refer to Figures 10 and 12. The clamping machine of the third embodiment of this creation is roughly the same as the second embodiment shown in Figures 7 to 8, except that the elastic member 18b uses a torsion spring instead of a tension spring. , In order to push the clamping block 15 to eccentrically rotate and press against the workpiece 90. One end of the elastic member 18b is disposed on the end surface 1211 of the fixing ring 121 of the second socket 12, the other end of the elastic member 18b is disposed on the outer side surface 153 of the clamping block 15, and the spiral coil of the elastic member 18b is positioned on the positioning member 17. Since the working principle of the third embodiment of the present invention is similar to that of the second embodiment, the only difference is that the second embodiment uses a tension spring to pull the clamping block 15 to rotate eccentrically to narrow the jaws, and the third embodiment uses a torsion spring. The clamping block 15 is pushed to rotate eccentrically to reduce the clamping opening. Therefore, for the principle of operation, please refer to the second embodiment of the present invention, which will not be repeated here.

In summary, this creation provides a clamping device and a clamping machine including a clamping device. The three clamping blocks of the clamping device can be eccentrically rotated to clamp the workpiece tightly. In addition, the elastic part of the clamping device can The force of each clamping block to clamp the workpiece is roughly the same, so that the clamping block will not over-stress the workpiece and avoid damaging the clamping device or the workpiece. Even if the roundness of the workpiece is insufficient, the elastic part of the clamping device can still make the workpiece The degree of urgency is equivalent to avoid the deviation of the position of the workpiece during the clamping process, resulting in processing failure or production of defective products, or even damage to the clamping device or the workpiece. In addition, when the three clamping blocks are in the released state, the diameter of the clamping opening defined by the three clamping blocks is larger than the diameter of the workpiece and approximately equal to the inner diameter of the fixing ring of the second socket, so the workpiece is passing through It is easy to align at times without colliding with the clamping block, which can prevent workpiece insertion failure or even damage to the clamping device or the workpiece. Furthermore, according to different processing requirements, the clamping device can easily replace cushions of different lengths through the perforation of the first socket, or easily replace clamping sets of different sizes by removing the fasteners, because the replacement process is simple and convenient There is no need to disassemble the entire clamping device, which saves the manpower and time required for the replacement process. Therefore, the clamping machine of this creation can automate the process of clamping or releasing the workpiece, which greatly saves manpower and time, and achieves the practical benefits of improving work efficiency.

10: Clamping device 11: The first socket 111: first shaft hole 112: first end face 113: second end face 114: Piercing 12: The second socket 121: fixed ring 1211: end face 122: support ring 1221: socket section 1222: stop section 1223: first stop surface 1224: inner ring surface 1225: first convex ring 123: Locking ring 1231: second stop surface 1232: second convex ring 124: Fastener 125: cushion 13: driving parts 131: Driving Department 132: Drive Hole 133: Balance Department 14: top heart 15: Clamping block 151: Clamp 152: Slot 153: Outer side 1521: Groove 16: Moving parts 17: positioning parts 18: Elastic part 18a: Elastic part 18b: Elastic part 181: top surface 20: shell 21: turntable 30: transfer 301: Pole 40, 40’: Detector 50: Bearing 60: power parts 61: putter 90: Workpiece

Figure 1 is a three-dimensional view of the first embodiment of the creation. Figure 2 is a three-dimensional exploded view of the first embodiment of the creation. Figure 3 is an enlarged view of the clamping block and elastic member of the first embodiment of the creation. Figure 4 is a cross-sectional view of the clamping device of the first embodiment of the creation. Figure 5 is a schematic diagram (1) of the clamping process of the first embodiment of the creation. Figure 6 is a schematic diagram (2) of the clamping process of the first embodiment of the creation. Figure 7 is a three-dimensional exploded view of the second embodiment of the creation. Figure 8 is a schematic diagram (1) of the clamping process of the second embodiment of the creation. Figure 9 is a schematic diagram (2) of the clamping process of the second embodiment of the creation. Figure 10 is a three-dimensional exploded view of the third embodiment of the creation. Figure 11 is a schematic diagram (1) of the clamping process of the third embodiment of the creation. Figure 12 is a schematic diagram (2) of the clamping process of the third embodiment of the creation.

10: Clamping device

151: Clamp

11: The first socket

111: first shaft hole

112: first end face

12: The second socket

121: fixed ring

124: Fastener

13: driving parts

131: Driving Department

132: Drive Hole

133: Balance Department

14: top heart

15: Clamping block

152: Slot

16: Moving parts

17: positioning parts

18: Elastic part

20: shell

21: turntable

30: transfer

40, 40’: Detector

60: power parts

61: putter

90: Workpiece

Claims (10)

A clamping device for clamping a workpiece, the clamping device comprising: A first socket; A second socket, the first socket can rotate relative to the second socket; A plurality of clamping units, each of the clamping units has a clamping block, a pushing piece and an elastic piece, the clamping blocks jointly define a clamping opening in the direction of the axis of the clamping device, and each clamping unit The block is eccentrically rotatably arranged on the second socket, and each of the clamping blocks can shrink or expand the clamping opening when eccentrically rotating, each clamping block has a slot hole which penetrates the clamping block , The pushing member passes through the slot and is arranged on the first socket, the pushing member can be displaced in the slot and push the clamping block to rotate eccentrically, the elastic member is arranged on the clamping block, when each When the clamping block rotates eccentrically to reduce the clamping opening, each of the elastic members can make each clamping block press the workpiece toward the clamping opening to a similar degree. As for the clamping device described in claim 1, wherein the elastic member is a plate-shaped elastic piece, the plate-shaped elastic piece is arranged in the slot of the clamping block, and the pushing piece can abut against the plate-shaped elastic piece When the pushing member is displaced in the slot, the plate-shaped elastic piece can buffer the pushing force of the pushing member on the clamping block. For the clamping device described in item 1 of the scope of patent application, the elastic member is a tension spring or a torsion spring, one end of the elastic member is disposed on the second socket member, and the other end of the elastic member is disposed on the clamp Solid block. For the clamping device described in item 1 of the scope of patent application, the second socket includes a fixing ring, a supporting ring and a cushion. The fixing ring is detachably arranged on the supporting ring, and the cushion can The clamping block is detachably clamped between the fixing ring and the supporting ring, and the clamping blocks are eccentrically rotatably arranged on the fixing ring. For the clamping device described in item 1 of the scope of patent application, the clamping device further has a top center, and the second sleeve is sleeved on the top center. As for the clamping device described in claim 1, wherein the outer diameter surface of the second socket member further has at least one stop surface, and the stop surface is arranged on the outer diameter surface of the second socket member. Such as the clamping device described in any one of items 1 to 6 of the scope of patent application, wherein the straightening device further has a driving member, the driving member is fixed to the first socket member, and the driving member is used for turning and turning And drive the first socket to rotate together. As for the clamping device described in item 7 of the scope of patent application, the driving member extends radially outward to form a driving part, and the driving part has a driving hole. A clamping machine that can automatically clamp or release a workpiece. The clamping machine includes the clamping device as described in any one of items 1 to 8 of the scope of the patent application, and the clamping machine further includes : A housing, the housing having a turntable, the turntable can rotate relative to the housing; A turning member, when the turntable rotates, it can drive the turning member to make a circular motion centered on a rotation axis of the turntable, and when the turning member moves in a circular motion, the first sleeve of the clamping device can be moved to The rotation axis of the turntable rotates at the center; A driving unit, which drives the turntable to rotate relative to the casing. For example, the clamping machine described in item 9 of the scope of patent application further includes at least two detectors and a pushing unit. The at least two detectors are arranged on the housing at intervals, and each detector faces the clamping device. According to the device arrangement, the pushing unit has a power element and a push rod, and the power element can push the push rod against the second socket part.

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