Clamp assembly

Abstract

The utility model discloses a clamp assembly, which comprises a clamp, and the clamp comprises a clamping jaw; the clamping jaw is in transmission connection with one end of the transmission rod; the elastic piece is arranged on the peripheral side of the transmission rod in a sleeving mode, and the other end of the transmission rod abuts against one end of the elastic piece; the periphery of a transmission rod is sleeved with the first transmission part, and one end of the first transmission part abuts against the other end of the elastic part so that the transmission rod can be in transmission connection with the first transmission part; the first transmission part is suitable for being in transmission connection with a main shaft of the lathe, and the main shaft drives the first transmission part to move in the first direction. Driving force borne by the first transmission part is transmitted to the transmission rod through the elastic part, the clamping jaw clamps the workpiece, the clamping force of the clamping jaw on the workpiece is flexibly adjusted, and workpiece damage caused by misoperation is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of lathe parts technology, and in particular to a clamping assembly. Background Technology

[0002] Sensor stacks, as highly precise mechanical components, play a crucial role in industrial applications. In related technologies, the clamping force applied during the clamping process is often excessive. For example, a pull-back hydraulic chuck in existing technology is characterized by its large size, heavy weight, and, more importantly, extremely strong clamping force. Even when technicians adjust the pressure of the machine tool's hydraulic station to the minimum, this type of hydraulic chuck will still inevitably cause damage to the sensor stack, affecting its normal function and accuracy. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a clamping assembly that transmits the driving force received by the first transmission member to the transmission rod through an elastic element, thereby enabling the clamps to clamp the workpiece. The clamping force of the clamps on the workpiece can be flexibly adjusted, effectively reducing workpiece damage caused by improper operation.

[0004] A clamping assembly according to an embodiment of the present invention includes: a clamp, the clamp including: a jaw; a transmission rod, the jaw being tractively connected to one end of the transmission rod; an elastic element, the elastic element being sleeved on the outer periphery of the transmission rod, the other end of the transmission rod abutting against one end of the elastic element; a first transmission member, the first transmission member being sleeved on the outer periphery of the transmission rod and one end abutting against the other end of the elastic element, so that the transmission rod and the first transmission member are tractively connected; the first transmission member is adapted to be tractively connected to the spindle of a lathe, the spindle driving the first transmission member to move along a first direction.

[0005] According to the clamping assembly of this utility model embodiment, the driving force received by the first transmission member is transmitted to the transmission rod through the elastic member, so as to realize the clamping of the workpiece by the jaws. Moreover, the force can be controlled more precisely when clamping the workpiece, which effectively reduces the workpiece damage caused by improper operation.

[0006] According to some embodiments of the present invention, the transmission rod includes: a transmission rod body and a limiting member. One end of the transmission rod body is connected to the clamp for transmission. The elastic member is sleeved on the outer periphery of the transmission rod body. The other end of the transmission rod body is provided with the limiting member, and the limiting member abuts against one end of the elastic member.

[0007] According to some embodiments of the present invention, the inner wall of the limiting member is provided with a first threaded portion, and the transmission rod body is provided with a second threaded portion, wherein the first threaded portion and the second threaded portion are threadedly connected.

[0008] According to some embodiments of the present invention, the elastic element includes a spring and a disc spring. The disc spring is sleeved on the outer periphery of the transmission rod. One end of the disc spring abuts against the first transmission member and the other end abuts against the spring. The other end of the spring abuts against the limiting member.

[0009] According to some embodiments of the present invention, the clamp further includes: a second transmission member, one end of which is connected to the gripper and moves synchronously therewith, and the other end of which is connected to the transmission rod.

[0010] According to some embodiments of the present invention, the second transmission member is provided with a first guide space extending along a first direction, and one end of the transmission rod is inserted into the first guide space and connected to the second transmission member.

[0011] According to some embodiments of the present invention, the inner wall of the first guide space is provided with a third threaded portion, and the outer periphery of one end of the transmission rod is provided with a fourth threaded portion, so that the third threaded portion and the fourth threaded portion are threadedly connected.

[0012] According to some embodiments of the present invention, the second transmission component includes a disc portion and a connecting rod portion. One end of the disc portion is connected to the gripper and the other end is connected to the connecting rod portion. The connecting rod portion is connected to the transmission rod in a transmission manner. A first guide space passes through the connecting rod portion and the disc portion.

[0013] According to some embodiments of the present invention, the clamp assembly further includes: a connecting flange, which is connected to the clamp and is adapted to be fixedly connected to the spindle; the clamp further includes: a clamp body, the jaws are disposed on the clamp body, a second guide space is formed between the clamp body and the connecting flange, and the disc portion moves in a first direction within the second guide space.

[0014] According to some embodiments of the present invention, a stepped hole is provided in the middle of the fixture body, and an adjustment hole is provided at one end of the transmission rod. The center of the adjustment hole is aligned with the center of the stepped hole, and the positioning fixture is selectively installed in the stepped hole.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of a clamping assembly according to an embodiment of the present utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of a clamping assembly according to an embodiment of the present utility model. Figure 2 ;

[0019] Figure 3 This is a cross-sectional view of a clamp assembly according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of a clamp assembly for mounting a workpiece according to an embodiment of the present utility model;

[0021] Figure 5 This is a cross-sectional view of the clamp assembly for installing a workpiece according to an embodiment of the present utility model.

[0022] Figure label:

[0023] 100. Fixture assembly;

[0024] 10. Fixture; 11. Gripper; 12. Fixture body; 121. Stepped hole;

[0025] 21. Transmission rod; 211. Transmission rod body; 212. Limiting component; 213. Adjusting hole; 22. Elastic component; 221. Disc spring; 222. Spring; 23. First transmission component; 24. Second transmission component; 241. First guide space; 242. Disc portion; 243. Connecting rod portion; 25. Connecting flange; 26. Second guide space;

[0026] 200. Workpiece; 300. Positioning fixture. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0028] The following is for reference. Figures 1-5 Description of a clamp assembly 100 according to an embodiment of the present utility model.

[0029] The fixture assembly 100 can be used to hold the workpiece 200 during turning operations. For example, the fixture assembly 100 can be used to turn the inner holes of the upper and lower end sensor stacks of the rotor.

[0030] like Figure 1 and Figure 2 As shown, the clamp assembly 100 according to an embodiment of the present utility model includes: a clamp 10, a transmission rod 21, an elastic element 22, and a first transmission element 23.

[0031] Such as combination Figures 1-5As shown, the fixture 10 includes: a gripper 11, which is used to grip the workpiece 200. The gripper 11 can move along a first direction. The workpiece 200 can be installed on one side of the fixture 10 in the first direction. The gripper 11 is arranged opposite to the workpiece 200. During the movement of the gripper 11 along the first direction, the workpiece 200 is gripped.

[0032] Furthermore, the gripper 11 is connected to one end of the transmission rod 21, that is, the gripper 11 moves synchronously with the transmission rod 21, and the transmission rod 21 can move along the first direction, which is the axial direction of the transmission rod 21. When the transmission rod 21 moves along the first direction, the gripper 11 moves along the first direction with the transmission rod 21 to clamp the workpiece 200.

[0033] like Figure 1 As shown, the elastic element 22 is sleeved on the outer periphery of the transmission rod 21, and the other end of the transmission rod 21 abuts against one end of the elastic element 22. Specifically, the elastic element 22 can extend and retract along the first direction. When the elastic element 22 retracts, it exerts a pushing force on the other end of the transmission rod 21, causing the transmission rod 21 to move along the first direction. That is, one end of the transmission rod 21 moves toward the other end of the transmission rod 21, and the gripper 11 gradually approaches the workpiece 200, thereby clamping the workpiece 200.

[0034] like Figure 3 and Figure 5 As shown, the first transmission member 23 is sleeved on the outer periphery of the transmission rod 21, and one end of the first transmission member 23 abuts against the other end of the elastic member 22, so that the transmission rod 21 and the first transmission member 23 are connected in a transmission manner. That is, the elastic member 22 abuts between the first transmission member 23 and the other end of the transmission rod 21. The first transmission member 23 can move in a first direction. During the movement of the first transmission member 23 in the first direction, the elastic member 22 contracts, and the transmission rod 21 is pushed by the elastic member 22. Then the transmission rod 21 can move with the first transmission member 23 in the first direction to achieve clamping of the workpiece 200.

[0035] The first transmission member 23 is adapted to be connected to the spindle of the lathe, and the spindle drives the first transmission member 23 to move in the first direction. That is, the spindle of the machine tool acts as a driving device, driving the first transmission member 23 to move in the first direction. During the movement of the first transmission member 23 in the first direction, the elastic member 22 can be compressed. The elastic member 22 transmits the force to the transmission rod 21, thereby driving the transmission rod 21 to move in the first direction. Since the transmission rod 21 is connected to the gripper 11, it can drive the gripper 11 to move in the first direction and clamp the workpiece 200.

[0036] Furthermore, when the clamping force of the gripper 11 on the workpiece 200 is too large, the elastic element 22 also has a force-relieving function, which can effectively reduce the stress concentration of the workpiece 200 during the processing and improve the processing quality.

[0037] Therefore, the machine tool's drive unit no longer directly acts on the gripper 11 of the fixture 10, thus effectively avoiding many problems caused by direct action in traditional designs and improving the flexibility and reliability of lathe machining.

[0038] The clamping assembly 100 of this invention does not directly clamp the workpiece by driving the jaws 11 through the spindle. Instead, the machine tool spindle acts on the first transmission component 23, and the force of the first transmission component 23 is transmitted to the transmission rod 21 through the elastic component 22. This significantly reduces the risk of damaging the workpiece 200 during operation. Because this design allows each part to move independently, the clamping force can be more precisely controlled, effectively reducing damage to the workpiece 200 caused by improper operation.

[0039] Specific work process:

[0040] A hydraulic tie rod is installed on the machine tool spindle. By applying a certain hydraulic pressure to the hydraulic tie rod, the hydraulic tie rod pulls the first transmission component 23. Under the action of the tension, the first transmission component 23 begins to move along the first direction and transmits this motion to the elastic component 22. After being subjected to the movement of the tie rod, the elastic component 22 produces a corresponding elastic deformation. The other end of the elastic component 22 then pushes the transmission rod 21. Under the action of the elastic component 22, the transmission rod 21 moves along the first direction. The gripper 11 moves synchronously with the transmission component, so that the gripper 11 tightly clamps the workpiece 200, thereby ensuring the stability and accuracy of the workpiece 200 during the machining process.

[0041] according to Figures 2-4 As shown, the transmission rod 21 includes a transmission rod body 211 and a limiting member 212. One end of the transmission rod body 211 is connected to the clamp 10 for transmission. An elastic member 22 is sleeved on the outer periphery of the transmission rod body 211. The other end of the transmission rod body 211 is provided with the limiting member 212, which abuts against one end of the elastic member 22. Specifically, the transmission rod body 211 extends along a first direction, the limiting member 212 is located at the other end of the transmission rod body 211, one end of the elastic member 22 abuts against the limiting member 212, and the elastic member 22 abuts between the first transmission member 23 and the limiting member 212. During the movement of the first transmission member 23 along the first direction, the elastic member 22 can apply a pushing force to the limiting member 212, causing the transmission rod body 211 to move in a direction away from the elastic member 22, that is, the gripper 11 moves towards the workpiece 200, thereby achieving the clamping of the workpiece 200.

[0042] The relative position of the limiting member 212 and the transmission rod body 211 is adjustable. That is, the user can adjust the position of the limiting member 212 on the transmission rod body 211 to adjust the clamping force of the gripper 11 on the workpiece 200. Thus, the user can easily achieve precise control of the clamping pressure of the fixture 10 by simply adjusting the position of the limiting member 212 according to actual needs.

[0043] In some embodiments, the inner wall of the limiting member 212 is provided with a first threaded portion, and the transmission rod body 211 is provided with a second threaded portion, with the first threaded portion and the second threaded portion being threadedly connected. That is, the outer periphery of the other end of the transmission rod body 211 is provided with a second threaded portion, the inner wall of the limiting member 212 is threadedly connected to the other end of the transmission rod body 211, and the connection position between the limiting member 212 and the transmission rod body 211 is adjustable, thereby adjusting the clamping force of the gripper 11 on the workpiece 200.

[0044] like Figure 2 As shown, the limiting member 212 can be a nut, with a first threaded portion on the inner circumference of the thread and a second threaded portion on the transmission rod body 211. The nut is threadedly connected to the transmission rod body 211. Adjusting the position of the nut on the transmission rod body 211 can adjust the clamping force of the gripper 11 on the workpiece 200. Furthermore, there can be two nuts, arranged adjacent to each other, to prevent the nuts from falling off the transmission rod body 211.

[0045] like Figures 2-5 As shown, the elastic element 22 includes a spring 222 and a disc spring 221. The disc spring 221 is sleeved on the outer periphery of the transmission rod 21. One end of the disc spring 221 abuts against the first transmission member 23 and the other end abuts against the spring 222. The other end of the spring 222 abuts against the limiting member 212. Specifically, both the spring 222 and the disc spring 221 are sleeved on the outer periphery of the transmission rod body 211. The disc spring 221 abuts between the first transmission member 23 and the spring 222, and the spring 222 abuts between the disc spring 221 and the limiting member 212. The spindle of the machine tool drives the first transmission member 23 to move in a first direction. The first transmission member 23 pushes the disc spring 221 and the spring 222, causing the spring 222 to be compressed. The spring 222 also generates a thrust on the limiting member 212, causing the transmission rod body 211 to move in the first direction, so that the gripper 11 gradually approaches the workpiece 200, thereby clamping the workpiece 200.

[0046] like Figure 3 and Figure 5As shown, the clamp 10 further includes a second transmission member 24. One end of the second transmission member 24 is connected to the gripper 11 and moves synchronously with the gripper 11. The other end of the second transmission member 24 is connected to the transmission rod 21. Specifically, the second transmission member 24 is connected between the gripper 11 and the transmission rod 21. The second transmission member 24 moves along the first direction with the transmission rod 21, and drives the gripper 11 to move along the first direction accordingly. The gripper 11 is fixedly connected to the second transmission member 24, and the gripper 11 moves synchronously with the second transmission member 24.

[0047] The second transmission component 24 is movably connected to the transmission rod 21. The relative position of the second transmission component 24 and the transmission rod 21 is adjustable, thereby adjusting the clamping force of the gripper 11 on the workpiece 200. For example, if the second transmission component 24 is threaded to the outer circumference of one end of the transmission rod 21, adjusting the relative position of the transmission rod 21 and the second transmission component 24 can adjust the clamping force of the gripper 11 on the workpiece 200.

[0048] Specifically, a hydraulic pull rod is installed on the machine tool spindle. When clamped, the hydraulic pull rod applies a certain hydraulic pressure to pull the first transmission component 23. Under the action of the tension, the first transmission component 23 begins to move along a preset track, transmitting this motion to the disc spring 221. After being acted upon by the movement of the first transmission component 23, the disc spring 221 undergoes corresponding elastic deformation, transmitting this deformation force to the spring 222. The other end of the spring 222 actuates the limiting component 212 and the connected transmission rod body 211. Under the action of the spring 222, the transmission rod body 211 begins to drive the second transmission component 24 to move along the first direction. The second transmission component 24, after being acted upon by the transmission rod 21, distributes this tension evenly to the gripper 11. Under the action of the tension, the gripper 11 moves along the first direction, thereby clamping the workpiece 200, ensuring the stability and accuracy of the workpiece 200 during processing.

[0049] Combination Figure 3 and Figure 5 As shown, a first guide space 241 extending along a first direction is provided inside the second transmission member 24. One end of the transmission rod 21 is inserted into the first guide space 241, and the transmission rod 21 is connected to the second transmission member 24. Specifically, the first guide space 241 extends along the first direction and passes through the second transmission member 24. After one end of the transmission rod 21 is inserted into the first guide space 241, the outer periphery of one end of the transmission rod 21 is connected to the inner wall of the first guide space 241, so that the transmission rod 21 and the second transmission member 24 move synchronously.

[0050] In some embodiments, the inner wall of the first guide space 241 is provided with a third threaded portion, and the outer periphery of one end of the transmission rod 21 is provided with a fourth threaded portion, so that the third threaded portion and the fourth threaded portion are threadedly connected. That is, one end of the transmission rod 21 is threadedly connected to the inner wall of the first guide space 241, and the length of the fourth threaded portion in the first direction is greater than that of the third threaded portion or the dimension of the third threaded portion in the first direction is greater than that of the fourth threaded portion, so that the relative position of the transmission rod 21 and the second transmission member 24 can be adjusted, thereby indirectly adjusting the clamping force when the gripper 11 clamps the workpiece 200.

[0051] like Figure 3 As shown, the second transmission member 24 includes a disc portion 242 and a connecting rod portion 243. One end of the disc portion 242 is connected to the gripper 11 and the other end is connected to the connecting rod portion 243. The connecting rod portion 243 is drive-connected to the transmission rod 21. A first guide space 241 passes through the connecting rod portion 243 and the disc portion 242. Specifically, the transmission rod 21 is inserted into the connecting rod portion 243, and the connecting rod portion 243 is drive-connected to the transmission rod 21, so that the second transmission member 24 moves synchronously with the transmission rod 21. The disc portion 242 is used to connect with the gripper 11, so that the gripper 11 moves along a first direction with the first transmission member 23.

[0052] Combination Figures 2-5 As shown, the clamp assembly 100 further includes a connecting flange 25, which is connected to the clamp 10 and is adapted to be fixedly connected to the spindle. Specifically, the connecting flange 25 is provided with a positioning part, which can be carefully aligned with the positioning protrusion at the end of the spindle to ensure accurate positioning and thus guarantee the installation accuracy of the entire device.

[0053] The first transmission component 23 is provided with a positioning groove. When the positioning groove mates with the positioning protrusion inside the spindle, it ensures a perfect fit, guaranteeing stability and accuracy during transmission. A positioning tenon is provided at the end of the spindle. Carefully aligning the positioning part on the connecting flange 25 with the positioning tenon at the end of the spindle ensures accurate positioning, thereby guaranteeing the installation accuracy of the entire device. Furthermore, the outer circumference of the first transmission component 23 is also provided with threads. Slowly screwing the machine tool spindle into the threads on the first transmission component 23 requires even tightening to avoid damage caused by improper force.

[0054] Furthermore, the connecting flange 25 has a mounting portion on one side in the first direction, which is used for fixed connection with the spindle. For example, the clamp assembly 100 can be securely fixed to the spindle by passing a fixing bolt through the positioning portion and the spindle. There can be multiple mounting portions, which are evenly distributed around the periphery of the connecting flange 25 to ensure the reliability of the connection between the clamp assembly 100 and the spindle.

[0055] like Figures 2-5As shown, the clamp 10 further includes: a clamp body 12, a gripper 11 disposed on the clamp body 12, a second guide space 26 formed between the clamp body 12 and the connecting flange 25, and a disc portion 242 moving in a first direction within the second guide space 26. Specifically, the gripper 11 is mounted on the clamp body 12 and can move relative to the clamp body 12 in the first direction. The clamp body 12 is connected to the connecting flange 25, and the clamp body 12 and the connecting flange 25 define the first guide space 241. The disc portion 242 is located within the second guide space 26 and moves in the first direction within the second guide space 26. The first guide space 241 can limit the stroke of the second transmission member 24, that is, the second guide space 26 can limit the stroke of the transmission rod 21.

[0056] like Figure 1 , Figure 3 and Figure 5 As shown, a stepped hole 121 is provided in the middle of the fixture body 12, and an adjustment hole 213 is provided at one end of the transmission rod 21. The adjustment hole 213 is aligned with the center of the stepped hole 121. The positioning fixture 300 is selectively installed in the stepped hole 121. The positioning fixture 300 is used to install the workpiece 200, realizing the initial positioning and installation of the workpiece 200. The positioning fixture 300 can be placed in the stepped hole 121, and the positioning fixture 300 and the stepped hole 121 are clearance-fitted.

[0057] The adjustment hole 213 facilitates subsequent adjustments by the operator. The adjustment hole 213 is a non-rotational hole, allowing the operator to insert tools into it and rotate the transmission rod 21 to adjust the relative position of the transmission rod 21 and the second transmission component 24. This enables precise adjustment of the pressure on the spring 222 or disc spring 221, thus fine-tuning the clamping force of the fixture 10 and ensuring optimal performance under various working conditions. This design not only improves the efficiency of the fixture 10 but also significantly reduces the difficulty of maintenance and adjustment. The adjustment hole 213 is aligned with the center of the stepped hole 121, facilitating the operator to pass tools sequentially through the stepped hole 121 and the adjustment hole 213.

[0058] For example, the adjustment hole 213 can be hexagonal. Specifically, the operator can take out an Allen wrench (the size of which matches the adjustment hole 213) and insert it into the adjustment hole 213. By directly rotating the transmission rod 21, the operator can precisely adjust the pressure of the spring 222 or the disc spring 221, thereby achieving fine-tuning of the clamping force of the clamp 10 and ensuring that the clamp 10 can perform optimally under different working conditions. This design not only improves the efficiency of the clamp 10 but also greatly reduces the difficulty of maintenance and adjustment.

[0059] A hydraulic pull rod is installed on the machine tool spindle. When clamped, the hydraulic pull rod applies a certain hydraulic pressure to pull the first transmission component 23. Under the action of the tension, the first transmission component 23 begins to move along a preset track and transmits this motion to the disc spring 221. After being acted upon by the movement of the first transmission component 23, the disc spring 221 undergoes corresponding elastic deformation, which is then transmitted to the spring 222. The other end of the spring 222 actuates the limiting component 212 and the transmission rod body 211 connected to it. Under the action of the spring 222, the transmission rod body 211 begins to drive the second transmission component 24 to move in the first direction. After being acted upon by the transmission rod 21, the second transmission component 24 distributes this tension evenly to the gripper 11. Under the action of the tension, the gripper 11 moves in the first direction, thereby tightly clamping the workpiece 200 and firmly fixing it within the positioning fixture 300, thus ensuring the stability and accuracy of the workpiece 200 during the machining process.

[0060] Specifically, by adjusting the limiting member 212 or the relative position of the transmission rod 21 and the second transmission member 24, the operator can flexibly adjust the clamping or loosening of the transmission rod 21 according to the different materials and sizes of the workpiece 200. This makes the operation process not only more convenient, but also adaptable to the needs of various working environments, greatly improving work efficiency and safety.

[0061] In addition, the fixture assembly 100 also supports the replacement of different positioning jigs 300. This design enables the fixture assembly 100 to adapt to the clamping requirements of various workpieces 200, greatly improving its versatility and practicality, and providing great convenience for production and processing.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A clamping assembly, characterized in that, include: The clamp (10) includes: gripper (11); The transmission rod (21) is connected to one end of the gripper (11) in a transmission connection. An elastic element (22) is sleeved on the outer periphery of the transmission rod (21), and the other end of the transmission rod (21) abuts against one end of the elastic element (22); The first transmission member (23) is sleeved on the outer periphery of the transmission rod (21) and one end abuts against the other end of the elastic member (22) so that the transmission rod (21) and the first transmission member (23) are connected in transmission. The first transmission member (23) is adapted to be connected in transmission with the spindle of the lathe, and the spindle drives the first transmission member (23) to move in a first direction.

2. The clamp (10) assembly according to claim 1, characterized in that, The transmission rod (21) includes a transmission rod body (211) and a limiting member (212). One end of the transmission rod body (211) is connected to the clamp (10) for transmission. The elastic member (22) is sleeved on the outer periphery of the transmission rod body (211). The other end of the transmission rod body (211) is provided with the limiting member (212). The limiting member (212) abuts against one end of the elastic member (22).

3. The clamp (10) assembly according to claim 2, characterized in that, The inner wall of the limiting member (212) is provided with a first threaded portion, and the transmission rod body (211) is provided with a second threaded portion, and the first threaded portion and the second threaded portion are threadedly connected.

4. The clamp (10) assembly according to claim 2, characterized in that, The elastic element (22) includes a spring (222) and a disc spring (221). The disc spring (221) is sleeved on the outer periphery of the transmission rod (21). One end of the disc spring (221) abuts against the first transmission element (23) and the other end abuts against the spring (222). The other end of the spring (222) abuts against the limiting element (212).

5. The clamp (10) assembly according to claim 1, characterized in that, The clamp (10) further includes a second transmission member (24), one end of which is connected to the gripper (11) and moves synchronously, and the other end of which is connected to the transmission rod (21).

6. The clamp (10) assembly according to claim 5, characterized in that, The second transmission member (24) is provided with a first guide space (241) extending in a first direction, and one end of the transmission rod (21) is inserted into the first guide space (241) and connected to the second transmission member (24).

7. The clamp (10) assembly according to claim 6, characterized in that, The inner wall of the first guide space (241) is provided with a third threaded portion, and the outer periphery of one end of the transmission rod (21) is provided with a fourth threaded portion, so that the third threaded portion and the fourth threaded portion are threadedly connected.

8. The clamp (10) assembly according to claim 6, characterized in that, The second transmission component (24) includes a disc portion (242) and a connecting rod portion (243). One end of the disc portion (242) is connected to the gripper (11) and the other end is connected to the connecting rod portion (243). The connecting rod portion (243) is connected to the transmission rod (21) in a transmission manner. The first guide space (241) passes through the connecting rod portion (243) and the disc portion (242).

9. The clamp (10) assembly according to claim 8, characterized in that, Also includes: A connecting flange (25) is connected to the clamp (10), and the connecting flange (25) is adapted to be fixedly connected to the spindle; the clamp (10) further includes: a clamp body (12), the jaws (11) are disposed on the clamp body (12), a second guide space (26) is formed between the clamp body (12) and the connecting flange (25), and the disc portion (242) moves in a first direction within the second guide space (26).

10. The clamp (10) assembly according to claim 9, characterized in that, The clamp body (12) has a stepped hole (121) in the middle, and an adjustment hole (213) is provided at one end of the transmission rod (21). The center of the adjustment hole (213) is aligned with the center of the stepped hole (121), and the positioning fixture (300) is selectively installed in the stepped hole (121).

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