A vernier caliper vernier milling clamping mechanism

Abstract

This invention relates to the field of clamping mechanism technology and discloses a milling clamping mechanism for vernier calipers. The mechanism includes a clamping plate mounted on the outer wall of a pneumatic device and a placement mechanism mounted on the outer wall of the clamping mechanism. The placement mechanism includes a fixed frame. By setting a placement table, the operator can place the workpiece on the surface of the fixed frame using a robotic arm, and then clamp the workpiece using multiple arc surfaces on the clamping plate. When the tool cuts the workpiece, the removed chips and cutting fluid flow out through the gap between the two arc plates of the clamping plate. The cutting fluid flowing from the inclined groove surface comes into contact with the workpiece placed on the fixed frame. This prevents the workpiece from forming a closed dead angle when placed inside the groove, which would cause the cut impurities to accumulate at the bottom of the groove, preventing airflow from blowing them away and resulting in inconsistent groove depths that affect workpiece accuracy.

Description

Technical Field

[0001] This invention relates to the field of clamping mechanism technology, specifically to a milling clamping mechanism for vernier calipers. Background Technology

[0002] Vernier calipers are fundamental precision length measuring tools in the field of machining. The milling of the guide groove on the back of the vernier scale (scale body) is the core process that determines the sliding accuracy and assembly yield of the caliper. The workpiece is a slender, thin-walled steel part with a large length span. It has stringent requirements at the micron level for clamping and positioning accuracy, deformation control, and surface protection. Most of the existing mainstream vernier scale milling clamping mechanisms adopt a structure in which the through groove supports the double-sided rigid clamping plates for direct clamping. The workpiece is three-dimensionally limited by the bottom surface and side wall of the groove. The cylinder drives the rigid clamping plates to clamp the workpiece from the side to complete the positioning milling.

[0003] During milling operations, steel chips generated during milling easily embed themselves in the tooling groove, forming closed dead zones. The airflow from the air gun is easily blocked by the workpiece and clamping structure, making it difficult for the airflow to penetrate deep into the groove and thoroughly flush away the accumulated iron powder and oily shavings in the dead zones. As the equipment continuously processes batches, iron chips and cutting fluid mixed with sludge will continue to accumulate and clump in the dead zone of the groove. Each time a workpiece is loaded, the residual iron chips will lift the bottom surface of the workpiece, causing the workpiece positioning height to shift, which in turn leads to problems with the depth of the milled groove and affects product quality. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a vernier caliper milling and clamping mechanism, including a frame, a plurality of pneumatic devices fixedly connected to the top of the frame, and connection ports fixedly connected to the outer wall of the pneumatic devices; further comprising:

[0005] A clamping mechanism is installed on the outer wall of the pneumatic device, and the clamping mechanism includes a clamping plate.

[0006] A bending mechanism is installed on the outer wall of the clamping mechanism, and the bending mechanism includes an arc-shaped strip.

[0007] A placement mechanism is installed on the outer wall of the clamping mechanism, and the placement mechanism includes a fixed frame.

[0008] The operator connects the frame to the lathe and the air pipe to the connector.

[0009] Preferably, the clamping mechanism further includes:

[0010] Clamping assembly, which is installed on the outer wall of the pneumatic device;

[0011] The positioning component is installed on the outer wall of the frame.

[0012] When the pneumatic device is activated, it pushes the two clamping components closer to each other and slides on the outer wall of the positioning component.

[0013] Preferably, the bending mechanism further includes:

[0014] A bending assembly is installed on the outer wall of the clamping assembly.

[0015] Telescopic assembly, which is installed on the outer wall of the bending assembly;

[0016] When the clamping components come close to each other, the bending component will bend.

[0017] Preferably, the placement mechanism further includes:

[0018] The placement component is installed on the outer wall of the positioning component;

[0019] A sliding component is installed on the inner wall where the component is placed.

[0020] During milling, the operator first places the workpiece on the sliding assembly.

[0021] Preferably, the clamping assembly includes an inclined groove formed on the side of the clamping plate away from the frame, and the side of the pneumatic device away from the connection port is slidably connected to the side of the clamping plate near the connection port.

[0022] The device consists of two clamping plates with a wave-shaped contact surface. The operator places the workpiece on the sliding assembly and activates the pneumatic device to bring the two clamping plates closer together to clamp the workpiece.

[0023] Preferably, the positioning component includes a connecting rod fixedly connected to the bottom of the frame, and a plurality of fixing rods are fixedly connected to the side of the connecting rod away from the frame;

[0024] Among them, multiple fixing rods are arranged in a linear array on the outer wall of the clamp.

[0025] Preferably, the bending assembly includes a number of bending plates on the side of the fixed connecting clamp away from the pneumatic device, the side of the bending plate away from the frame is fixedly connected to a number of arc strips one near the frame, and arc strip one is fixedly connected to the side of the arc strip one away from the pneumatic device.

[0026] The bending plate is fixedly connected between two clamping plates. One bending plate has two arc-shaped strips that are mirror-symmetrical. When compressed, the bending plate will bend, and the arc-shaped strip will also bend when compressed, accumulating elastic potential energy.

[0027] Preferably, the telescopic assembly includes a telescopic rod fixedly connected to the side of the curved plate away from the frame, a spring fixedly connected to the end of the telescopic rod away from the curved plate, a slide rod fixedly connected to the end of the spring away from the telescopic rod, the inner wall of the slide rod and the outer wall of the telescopic rod being slidably connected, and a push plate fixedly connected to the end of the slide rod away from the telescopic rod.

[0028] When the bending plate bends, it causes the slide rod to move closer to the frame, and the surface of the push plate also has multiple holes.

[0029] Preferably, the placement assembly includes a placement platform fixedly connected to the end of the fixing rod away from the frame, a fixing frame fixedly connected to the inner wall of the placement platform, and an elastic plate fixedly connected to the side of the fixing frame away from the push plate.

[0030] The elastic plate is elastic and accumulates potential energy when compressed, and the bottom of the placement platform has multiple small slots.

[0031] Preferably, the sliding assembly includes a placement plate fixedly connected to the end of the elastic plate away from the fixed frame, and a number of guide columns fixedly connected to both sides of the placement platform, with guide holes opened on the outer wall of the guide columns;

[0032] The liquid that comes into contact with the guide column will enter the guide hole. Guided by the guide hole, the liquid will enter the interior of the placement platform. The top of the placement plate has multiple slots. The position of each guide column is located between the two arc plates of the clamping plate. The width of the workpiece matches the bearing width enclosed by the placement platform and the two guide columns.

[0033] The present invention has the following beneficial effects:

[0034] (1) By setting up a placement platform, the operator can place the workpiece on the surface of the fixed frame using a robotic arm, and then clamp the workpiece using multiple arc surfaces on the clamping plate. In this way, when the tool cuts the workpiece, the cut-off waste and cutting fluid will flow out through the gap between the two arc plates of the clamping plate, and the cutting fluid flowing from the surface of the inclined groove will come into contact with the workpiece placed on the fixed frame. In this way, it is prevented that when the workpiece is placed inside the groove, the groove and the workpiece form a closed dead angle, which would cause the cut-off impurities to accumulate at the bottom of the groove, and the airflow cannot blow them away, resulting in uneven groove depths and affecting the workpiece accuracy.

[0035] (2) By setting a push plate, when the bent plate returns to straight, the push plate will also start to push the liquid inside the placement platform. When the liquid inside the placement platform is squeezed by the push plate, it will move towards the workpiece, thereby cleaning the bottom of the workpiece and the placement plate. In this way, too many impurities are prevented from adhering to the fixed frame, which will cause the impurities to rub against the bottom of the workpiece during subsequent cutting, affecting the product quality.

[0036] (3) By setting a fixed frame, when the cutting fluid enters the placement platform along the guide column, the liquid level will start to rise because the drainage speed at the bottom of the placement platform is less than the inlet speed. As the liquid level continues to rise, the liquid will come into contact with the bottom surface of the workpiece through the holes of the fixed frame, thereby cooling the workpiece and preventing the risk of deformation due to excessive workpiece temperature.

[0037] (4) By setting up an arc strip, when the cutting ends, the bending plate will change from a bent state to a relatively straight state. At this time, the arc strip will move upward with the deformation of the bending plate and lift the workpiece through the arc strip. In this way, the mechanical claw can directly grip the workpiece after the milling is completed, and prevent the mechanical claw from needing to be frequently adjusted to grip due to the small slot, which would affect the work efficiency. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0041] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0042] Figure 4 This is a schematic diagram of the overall structure of the placement mechanism of the present invention;

[0043] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0044] Figure 6 This is a schematic diagram of the overall structure of the bending plate of the present invention;

[0045] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle;

[0046] Figure 8 This is a schematic diagram of the overall structure of the placement platform of the present invention;

[0047] Figure 9 For the present invention Figure 8 Enlarged diagram of point D in the middle.

[0048] The attached diagram lists the components represented by each number as follows:

[0049] In the diagram: 12. Frame; 13. Pneumatic device; 14. Connection port; 2. Clamping mechanism; 21. Clamping assembly; 211. Clamping plate; 212. Inclined groove; 22. Positioning assembly; 221. Connecting rod; 222. Fixing rod; 3. Bending mechanism; 31. Bending assembly; 311. Bending plate; 312. Arc strip one; 313. Arc strip two; 32. Telescopic assembly; 321. Telescopic rod; 322. Slide rod; 323. Spring; 324. Push plate; 4. Placement mechanism; 41. Placement assembly; 411. Placement platform; 412. Fixing frame; 413. Elastic plate; 42. Sliding assembly; 421. Placement plate; 422. Guide hole; 423. Guide column. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1, please refer to Figures 1-7 This invention relates to a vernier caliper milling clamping mechanism, comprising a frame 12, a plurality of pneumatic devices 13 fixedly connected to the top of the frame 12, and connection ports 14 fixedly connected to the outer walls of the pneumatic devices 13; and further comprising:

[0052] Clamping mechanism 2 is installed on the outer wall of pneumatic device 13, and clamping mechanism 2 includes clamping plate 211;

[0053] Bending mechanism 3 is installed on the outer wall of clamping mechanism 2. Bending mechanism 3 includes arc-shaped strip 312.

[0054] Placement mechanism 4 is installed on the outer wall of clamping mechanism 2, and placement mechanism 4 includes a fixing frame 412.

[0055] The operator connects the frame 12 to the lathe and the air pipe to the connection port 14.

[0056] Clamping mechanism 2 also includes:

[0057] Clamping assembly 21 is installed on the outer wall of pneumatic device 13;

[0058] Positioning component 22 is installed on the outer wall of frame 12;

[0059] When the pneumatic device 13 is activated, it will push the two clamping components 21 closer to each other and slide on the outer wall of the positioning component 22.

[0060] Example 2, please refer to Figures 2-9 This invention relates to a vernier caliper milling clamping mechanism. Based on Embodiment 1, the bending mechanism 3 further includes:

[0061] Bending assembly 31 is installed on the outer wall of clamping assembly 21;

[0062] Telescopic component 32 is installed on the outer wall of bending component 31;

[0063] When the clamping components 21 come close to each other, the bending component 31 will bend.

[0064] The placement mechanism 4 also includes:

[0065] Placement component 41 is installed on the outer wall of positioning component 22;

[0066] Sliding component 42 is installed on the inner wall of the placement component 41;

[0067] During milling, the operator first places the workpiece on the sliding assembly 42.

[0068] The clamping assembly 21 includes an inclined groove 212 formed on the side of the clamping plate 211 away from the frame 12, and the side of the pneumatic device 13 away from the connection port 14 is slidably connected to the side of the clamping plate 211 near the connection port 14.

[0069] There are two clamping plates 211, and the contact surface of the clamping plates 211 is a wave-shaped clamping surface. The operator places the workpiece on the sliding assembly 42 and starts the pneumatic device 13 to bring the two clamping plates 211 closer to each other to clamp the workpiece.

[0070] The positioning component 22 includes a connecting rod 221 fixedly connected to the bottom of the frame 12, and a plurality of fixing rods 222 are fixedly connected to the side of the connecting rod 221 away from the frame 12.

[0071] Among them, multiple fixing rods 222 are arranged in a linear array on the outer wall of the clamping plate 211.

[0072] The bending assembly 31 includes a plurality of bending plates 311 on the side of the fixed connecting clamp 211 away from the pneumatic device 13. The side of the bending plate 311 away from the frame 12 is fixedly connected to the end of a plurality of arc strips 312 near the frame 12. Arc strips 312 are fixedly connected to arc strips 313 on the side away from the pneumatic device 13.

[0073] The bending plate 311 is fixedly connected between two clamping plates 211. One bending plate 311 has two arc-shaped strips 312, which are mirror-symmetrical. When compressed, the bending plate 311 will bend, and the arc-shaped strips 313 will also bend when compressed, accumulating elastic potential energy. By setting the arc-shaped strips 312, when the cutting ends, the bending plate 311 will change from a bent state to a relatively straight state. At this time, the arc-shaped strips 312 will move upward with the deformation of the bending plate 311, and lift the workpiece through the arc-shaped strips 313. In this way, the mechanical claw can directly grip the workpiece after milling, preventing the mechanical claw from needing to be frequently adjusted for gripping due to the small slot, which would affect work efficiency.

[0074] The telescopic assembly 32 includes a telescopic rod 321 fixedly connected to the side of the bending plate 311 away from the frame 12. A spring 323 is fixedly connected to one end of the telescopic rod 321 away from the bending plate 311. A sliding rod 322 is fixedly connected to one end of the spring 323 away from the telescopic rod 321. The inner wall of the sliding rod 322 is slidably connected to the outer wall of the telescopic rod 321. A push plate 324 is fixedly connected to one end of the sliding rod 322 away from the telescopic rod 321.

[0075] When the bending plate 311 bends, it will cause the slide rod 322 to move towards the frame 12, and the surface of the push plate 324 is also provided with multiple holes.

[0076] The placement component 41 includes a placement platform 411 fixedly connected to the end of the fixed rod 222 away from the frame 12, a fixed frame 412 fixedly connected to the inner wall of the placement platform 411, and an elastic plate 413 fixedly connected to the side of the fixed frame 412 away from the push plate 324.

[0077] The elastic plate 413 is elastic and accumulates potential energy when compressed. The bottom of the placement platform 411 has multiple small slots. By setting the fixing frame 412, when the cutting fluid enters the interior of the placement platform 411 along the guide column 423, the fluid level will start to rise because the drainage speed at the bottom of the placement platform 411 is less than the inlet speed. As the fluid level continues to rise, the fluid will contact the surface of the bottom of the workpiece through the holes of the fixing frame 412, thereby cooling the workpiece and preventing the risk of deformation due to excessive temperature.

[0078] The sliding assembly 42 includes a placement plate 421 fixedly connected to one end of the elastic plate 413 away from the fixed frame 412. Several guide columns 423 are fixedly connected to both sides of the placement platform 411, and guide holes 422 are opened on the outer wall of the guide columns 423.

[0079] The liquid that comes into contact with the guide column 423 will enter the guide hole 422. Guided by the guide hole 422, the liquid will enter the placement platform 411. The top of the placement platform 421 has multiple slots. The position of each guide column 423 is between the two arc plates of the clamping plate 211. The width of the workpiece matches the bearing width enclosed by the placement platform 411 and the two guide columns 423. By setting the push plate 324, when the bent plate 311 returns to straight, the push plate 324 will also start to push the liquid inside the placement platform 411. When the liquid inside the placement platform 411 is squeezed by the push plate 324, it will move towards the workpiece, thereby cleaning the bottom of the workpiece and the placement platform 421. In this way, it is prevented that too many impurities adhere to the fixing frame 412, which would cause the impurities to rub against the bottom of the workpiece during subsequent cutting, affecting the product quality.

[0080] One specific application of this embodiment is as follows: before starting work, the operator connects the frame 12 to the lathe and then connects the air pipe to the connection port 14.

[0081] At the start of the operation, the workpiece is gripped by a robotic arm and placed on the placement plate 421. After placement, the operator activates the pneumatic device 13 to bring the two clamping plates 211 closer together. During this process, the bending plate 311 is subjected to the squeezing force of the two clamping plates 211, causing it to gradually bend towards the frame 12. At this time, the first arc strip 312 moves towards the workpiece, bringing it into contact with the second arc strip 313, thus roughly correcting the workpiece. During the bending process of the bending plate 311, the telescopic rod 321 also begins to move downwards, initially as a spring. 323 gradually unfolds. When spring 323 is fully unfolded, it will cause push plate 324 to be pulled by telescopic rod 321, thereby causing push plate 324 to move away from placement plate 421. When the two clamping plates 211 complete the clamping of the workpiece, the operator starts the cutting tool on the lathe to cut the workpiece. At the beginning of the contact, the impact force generated by the cutting tool will cause placement plate 421 to squeeze elastic plate 413. At this time, elastic plate 413 will bend and accumulate elastic potential energy. At the beginning of the cutting process, the splashed cutting fluid will come into contact with the surface of the inclined groove 212. The cutting fluid will move along the surface of inclined groove 212 towards the placement table 411. When the cutting fluid slides between the two arc-shaped contact surfaces of the clamping plate 211, it comes into contact with the guide column 423. The fluid then enters the placement table 411 through the guide hole 422. Because the hole at the bottom of the placement table 411 is small, the fluid's entry speed is greater than its exit speed, causing the fluid level inside the placement table 411 to rise. As the fluid level inside the placement table 411 continues to rise, the fluid will contact the bottom surface of the workpiece through the holes in the elastic plate 413. When the cutting is completed, the operator controls the pneumatic device 13 to move the two clamping plates 211 outward, which will gradually restore the originally bent plate 311 to its original shape. During the movement of the bending plate 311, the telescopic rod 321 moves away from the frame 12, which pushes the push plate 324. This causes the liquid inside the placement table 411 to be squeezed upward by the push plate 324. At this time, the liquid flows through the groove on the surface of the placement plate 421 and washes the bottom of the workpiece. When the push plate 324 contacts the bottom of the elastic plate 413, the arc strip 312 also contacts the bottom of the workpiece. During the movement of the arc strip 312, the workpiece on the fixed frame 412 is lifted by the arc strip 313. The operator can then remove the milled workpiece by using the mechanical gripper.

[0082] By setting up the placement platform 411, the operator can place the workpiece on the surface of the fixed frame 412 using a robotic arm, and then clamp the workpiece using multiple arc surfaces on the clamping plate 211. In this way, when the tool cuts the workpiece, the removed chips and cutting fluid will flow out through the gap between the two arc plates of the clamping plate 211, while the cutting fluid flowing from the surface of the inclined groove 212 will come into contact with the workpiece placed on the fixed frame 412. In this way, it is prevented that when the workpiece is placed inside the groove, the groove and the workpiece form a closed dead angle, which would cause the cut impurities to accumulate at the bottom of the groove, and the airflow would not be able to blow them away, resulting in uneven groove depths and affecting the workpiece accuracy.

[0083] By setting the fixed frame 412, when the cutting fluid enters the placement table 411 along the guide column 423, the fluid level will start to rise because the discharge speed at the bottom of the placement table 411 is less than the inlet speed. As the fluid level continues to rise, the fluid will come into contact with the bottom surface of the workpiece through the holes of the fixed frame 412, thereby cooling the workpiece and preventing the risk of deformation due to excessive workpiece temperature.

[0084] By setting the first arc bar 312, when the cutting ends, the bending plate 311 will change from a bent state to a relatively straight state. At this time, the first arc bar 312 will move upward with the deformation of the bending plate 311, and lift the workpiece through the second arc bar 313. In this way, the mechanical claw can directly grip the workpiece after the milling is completed, preventing the mechanical claw from needing to be frequently adjusted for gripping due to the small slot, which would affect work efficiency.

[0085] By setting the push plate 324, when the bent plate 311 returns to straightness, the push plate 324 will also start to push the liquid inside the placement table 411. When the liquid inside the placement table 411 is squeezed by the push plate 324, it will move towards the workpiece, thereby cleaning the bottom of the workpiece and the placement plate 421. In this way, it prevents too many impurities from adhering to the fixed frame 412, which would cause the impurities to rub against the bottom of the workpiece during subsequent cutting, affecting product quality.

[0086] The preferred embodiments of the present invention disclosed above are only for illustrating the present invention. These preferred embodiments do not describe all details exhaustively, nor do they limit the invention to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A vernier caliper milling clamping mechanism, comprising a frame (12), wherein a plurality of pneumatic devices (13) are fixedly connected to the top of the frame (12), and a connection port (14) is fixedly connected to the outer wall of the pneumatic devices (13); characterized in that, Also includes: A clamping mechanism (2) is installed on the outer wall of the pneumatic device (13), and the clamping mechanism (2) includes a clamping plate (211). A bending mechanism (3) is installed on the outer wall of the clamping mechanism (2), and the bending mechanism (3) includes an arc-shaped strip (312). Placement mechanism (4), which is installed on the outer wall of clamping mechanism (2), and includes a fixing frame (412). The operator connects the frame (12) to the lathe and connects the air pipe to the connection port (14).

2. The vernier scale milling clamping mechanism for a vernier caliper according to claim 1, characterized in that: The clamping mechanism (2) further includes: Clamping assembly (21), which is installed on the outer wall of the pneumatic device (13); Positioning component (22), which is installed on the outer wall of frame (12); When the pneumatic device (13) is activated, it will push the two clamping components (21) closer to each other and slide on the outer wall of the positioning component (22).

3. The vernier scale milling clamping mechanism for a vernier caliper according to claim 2, characterized in that: The bending mechanism (3) further includes: A bending assembly (31) is mounted on the outer wall of the clamping assembly (21); Telescopic assembly (32), which is installed on the outer wall of bending assembly (31); When the clamping components (21) come close to each other, the bending component (31) will bend.

4. The vernier scale milling clamping mechanism for a vernier caliper according to claim 3, characterized in that: The placement mechanism (4) also includes: Placement component (41) is installed on the outer wall of positioning component (22); A sliding component (42) is installed on the inner wall of the placement component (41); During milling, the operator first places the workpiece on the sliding assembly (42).

5. The vernier scale milling clamping mechanism for a vernier caliper according to claim 4, characterized in that: The clamping assembly (21) includes an inclined groove (212) on the side of the clamping plate (211) away from the frame (12), and the side of the pneumatic device (13) away from the connection port (14) is slidably connected to the side of the clamping plate (211) near the connection port (14). There are two clamping plates (211), and the contact surface of the clamping plates (211) is a wave clamping surface. The operator places the workpiece on the sliding assembly (42) and starts the pneumatic device (13) to bring the two clamping plates (211) closer to each other to clamp the workpiece.

6. The vernier scale milling clamping mechanism for a vernier caliper according to claim 5, characterized in that: The positioning component (22) includes a connecting rod (221) fixedly connected to the bottom of the frame (12), and a plurality of fixing rods (222) are fixedly connected to the side of the connecting rod (221) away from the frame (12). Among them, multiple fixing rods (222) are arranged in a linear array on the outer wall of the clamp (211).

7. The vernier scale milling clamping mechanism for a vernier caliper according to claim 6, characterized in that: The bending assembly (31) includes a number of bending plates (311) on the side of the fixed connecting clamp (211) away from the pneumatic device (13). The side of the bending plate (311) away from the frame (12) is fixedly connected to the end of a number of arc strips (312) near the frame (12). Arc strips (313) are fixedly connected to the side of the arc strips (312) away from the pneumatic device (13). Among them, the bending plate (311) is fixedly connected between two clamping plates (211). There are two arc strips (312) on the bending plate (311) and they are mirror symmetrical. When it is squeezed, the bending plate (311) will bend, and the arc strip (313) will also bend when squeezed and accumulate elastic potential energy.

8. The vernier scale milling clamping mechanism for a vernier caliper according to claim 7, characterized in that: The telescopic assembly (32) includes a telescopic rod (321) fixedly connected to the side of the curved plate (311) away from the frame (12). A spring (323) is fixedly connected to one end of the telescopic rod (321) away from the curved plate (311). A slide rod (322) is fixedly connected to one end of the spring (323) away from the telescopic rod (321). The inner wall of the slide rod (322) is slidably connected to the outer wall of the telescopic rod (321). A push plate (324) is fixedly connected to one end of the slide rod (322) away from the telescopic rod (321). When the bending plate (311) bends, the slide rod (322) will move towards the frame (12), and the surface of the push plate (324) is also provided with multiple holes.

9. The vernier scale milling clamping mechanism for a vernier caliper according to claim 6, characterized in that: The placement assembly (41) includes a placement platform (411) fixedly connected to the end of the fixed rod (222) away from the frame (12), a fixed frame (412) fixedly connected to the inner wall of the placement platform (411), and an elastic plate (413) fixedly connected to the side of the fixed frame (412) away from the push plate (324). Among them, the elastic plate (413) is elastic and will accumulate potential energy when compressed, and the bottom of the placement platform (411) has multiple small slots.

10. The vernier scale milling clamping mechanism for a vernier caliper according to claim 9, characterized in that: The sliding assembly (42) includes a placement plate (421) fixedly connected to one end of the elastic plate (413) away from the fixed frame (412). Several guide columns (423) are fixedly connected to both sides of the placement platform (411), and guide holes (422) are opened on the outer wall of the guide columns (423). The liquid that comes into contact with the guide column (423) will enter the guide hole (422). The liquid will enter the placement platform (411) through the guide hole (422). The top of the placement plate (421) is provided with multiple slots. The position of each guide column (423) is located between the two arc plates of the clamping plate (211). The width of the workpiece matches the bearing width enclosed by the placement platform (411) and the two guide columns (423).

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