Turnover table for crawler chain link processing machine tool

Abstract

The invention discloses an overturning table for a crawler chain link processing machine tool, and relates to the field of crawler chain link processing, the overturning table comprises a base and a processing table arranged above the base, the left end and the right end of the processing table are symmetrically provided with rotators, and the outer sides of the rotators are connected with supporting seats mounted above the base; the machining table rotates above the base through a rotator, a first positioning seat is arranged above the machining table, and a first movable seat is arranged on the right side of the first positioning seat. According to the overturning table for the crawler chain link machining machine tool, the device can drive a chain link to be overturned and adjusted through the arrangement of the rotatable machining table, so that different machining requirements are met, the chain link can be positioned in a self-adaptive mode in cooperation with the limiting effect of the positioning base and the movable base, falling during overturning is prevented, the machining quality is guaranteed, and the machining efficiency is improved. And meanwhile, a plurality of stations are arranged, a plurality of workpieces can be machined at a time, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of crawler chain link processing, in particular to a turning table for a crawler chain link processing machine tool. Background Art

[0002] When processing the crawler chain links, the chain links can be placed on a processing table, and then the chain links can be drilled, polished or otherwise processed through corresponding processing equipment.

[0003] Prior art 1 (application number CN202411596001.7, Chinese patent published on January 10, 2025) A CNC boring and drilling fixture for precision machining of track chain links, comprising a 匚-shaped frame, the upper part of the 匚-shaped frame is provided with a clamping mechanism for clamping the track chain links, the lower part of the 匚-shaped frame is provided with a feeding mechanism, and the upper part of the 匚-shaped frame is fixedly installed with air blow pipes at equal intervals along the front and rear directions. The invention rotates the mounting plate to a vertical state, and then drives the material storage part to move to the left by moving the 匚-shaped frame to the left, so that the push plate assembly can push the supporting plate to move to the left, so that the track chain links processed on the mounting plate can be automatically unloaded under the action of gravity, and then the track chain links to be processed are automatically placed on the mounting plate by the push assembly, thereby automatically completing the track chain The replacement of the joint improves the processing efficiency. The present invention can blow the metal debris on the mounting plate through the air pipe, thereby automatically cleaning the mounting plate; Prior art 2 (application number CN202010625803.1, Chinese patent published on January 4, 2022) A kind of excavator chassis crawler chain link processing tooling fixture, including a base plate, a longitudinal clamping assembly arranged on the base plate, and a first transverse clamping assembly and a second transverse clamping assembly located on both sides of the longitudinal clamping assembly; the longitudinal clamping head of the longitudinal clamping assembly rotates and moves longitudinally with the second end as the axis to make the first end of the longitudinal clamping head close to or away from the chain link; the first movable block of the first transverse clamping assembly can press against the chain link laterally; the second movable block of the second transverse clamping assembly can press against the chain link laterally. With such an arrangement, the workpiece can be clamped and released by the longitudinal drive, the first lateral drive and the second lateral drive, which can greatly improve the degree of automated control of processing and assembly, help simplify the operating process and improve work efficiency. Moreover, by clamping and applying force in multiple directions, it is helpful to clamp and tighten the chain links to prevent them from slipping and loosening.

[0004] During the processing of crawler chain links, it is usually necessary to flip the workpiece to complete processing at different angles. The workpiece is prone to fall during flipping, which not only affects the processing quality, but may also cause damage to equipment and personnel. In addition, when processing the chain links, chain links of different sizes cannot be limited synchronously on the processing table. Multiple workstations can generally only limit workpieces of the same size, reducing the scope of application and flexibility of the processing table. Summary of the invention

[0005] The object of the present invention is to provide a turning table for a crawler chain link processing machine tool, so as to solve the problems raised in the above-mentioned background technology. During the processing of crawler chain links, it is usually necessary to turn the workpiece to complete processing at different angles. When turning, the workpiece is likely to fall off, which not only affects the processing quality, but may also cause damage to the equipment and personnel. Moreover, when processing the chain links, chain links of different sizes cannot be synchronously limited on the processing table.

[0006] To achieve the above object, the present invention provides the following technical solution: A turning table for a crawler chain link processing machine tool, including a base and a processing table arranged above the base. Rotators are symmetrically arranged at the left and right ends of the processing table, and a support seat installed above the base is connected to the outside of the rotator. The processing table rotates above the base through the rotator. A first positioning seat is arranged above the processing table, and a first movable seat is arranged on the right side of the first positioning seat. The first positioning seat and the first movable seat provide clamping for the chain link. A second positioning seat is arranged below the processing table, and a second movable seat is arranged on the right side of the second positioning seat. Moving control mechanisms are connected to the outside of the first movable seat and the second movable seat to control the movement of the second movable seat and the first movable seat, and the movement directions of the second movable seat and the first movable seat are opposite.

[0007] Further optimizing the technical solution, the first positioning seat and the second positioning seat are arranged in pairs on the outside of the processing table, and the paired first positioning seat and second positioning seat are symmetrically arranged about the center of the processing table in the front and back directions, providing paired processing stations for the processing table.

[0008] Further optimizing the technical solution, the moving control mechanism includes a fixed block, a driving plate, a connecting mechanism, and a driving mechanism; The fixed blocks are respectively fixed on the surfaces of the first movable seat and the second movable seat, and the fixed blocks form a horizontal sliding structure between the inside of the processing table and the processing table; The driving plate is arranged on the left side of the fixed block to provide driving force for the movement of the fixed block; The connecting mechanism is arranged on the right side of the driving plate to control the connection between the driving plate and the fixed block; The driving mechanism is connected to the driving plate to control the movement of the driving plate.

[0009] Further optimizing the technical solution, the driving mechanism includes a connecting frame, a driving block, and a reverse control mechanism; The connecting frame is fixed on the right side of the driving plate; The driving block is arranged inside the connecting frame, and the driving block forms a left-right sliding structure with the processing table; The reverse control mechanism is connected to the driving block to control the movement of the driving block.

[0010] To further optimize this technical solution, the reverse control mechanism includes a first driving rod, a transmission rod, a motor, a second driving rod, and a transmission gear; The first driving rod passes through and is threadedly connected between the driving blocks; The transmission rod is fixed to the left end of the first driving rod; The motor is connected to the transmission rod to control the rotation of the transmission rod; The second driving rod is located below the first driving rod, and the second driving rod controls the fixing block on the outside of the second movable seat; The transmission gears are respectively arranged on the left sides of the first driving rod and the second driving rod, and the two groups of transmission gears are meshed with each other.

[0011] To further optimize this technical solution, the connecting mechanism includes a movable cylinder, a torsion spring, a control rope, and a locking mechanism; The movable cylinder is rotatably installed inside the fixing block; The torsion spring is installed on the outside of the movable cylinder to provide a rotational reset force for the movable cylinder; The control rope is wound around the surface of the movable cylinder, and the left end of the control rope is fixedly connected to the driving plate; The locking mechanism is arranged inside the processing table to lock the position of the fixing block.

[0012] To further optimize this technical solution, the locking mechanism includes a moving rod, a guiding block, and a limiting and buffering mechanism; The moving rod passes through and is threadedly connected between the movable cylinders; The guiding block is fixed above the moving rod, and a vertical sliding structure is formed between the guiding block and the fixing block; The limiting and buffering mechanism is arranged below the moving rod to provide buffering for the continuous downward movement of the moving rod.

[0013] To further optimize this technical solution, the limiting and buffering mechanism includes a clamping block, a blocking plate, a clamping groove, and a reset spring; The clamping block is fixed below the moving rod; The blocking plate is arranged outside the clamping block, and a vertical sliding structure is formed between the blocking plate and the processing table; The clamping grooves are horizontally and evenly opened on the upper surface of the blocking plate, and a clamping structure is formed between the clamping grooves and the clamping block; The reset spring is arranged below the blocking plate to provide a reset thrust for the blocking plate.

[0014] To further optimize this technical solution, synchronous control mechanisms are arranged on the outer sides of the first positioning seat and the second positioning seat to control the clamping state of the chain links.

[0015] To further optimize this technical solution, the synchronization control mechanism includes a linkage plate, a hydraulic rod, and a pressure sensor; The linkage plate is fixed to the inner sides of the first positioning seat and the second positioning seat; The hydraulic rod is connected to the linkage plate to control the movement of the linkage plate; The pressure sensor is arranged on the surfaces of the first positioning seat and the second positioning seat to detect the clamping force thereof.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The rotatable processing table is provided so that the device can drive the chain link to perform flipping adjustment, thereby facilitating different processing requirements. Moreover, with the limiting effect of the positioning seat and the movable seat, the chain link can be adaptively positioned to prevent it from falling during flipping, ensuring the processing quality. At the same time, multiple workstations are provided, and multiple workpieces can be processed at one time, improving the processing efficiency.

[0017] Positioning seats and movable seats are arranged on both the upper and lower surfaces of the processing table. Subsequently, after the processing table is flipped downward, it is convenient for the workpiece to fall, and the positioning seats and movable seats after being turned up can continue to place the chain link. While limiting the chain link above the processing table, the limiting of the chain link below the processing table is automatically released, realizing the blanking effect.

[0018] The movement of the movable seat can be controlled by the driving mechanism, and the first movable seat and the second movable seat can perform reverse synchronous movement, thereby realizing the automatic blanking and clamping of subsequent products. Moreover, the paired first movable seat and second movable seat can move different distances, so as to limit chain links of different sizes.

[0019] The rotation of the movable cylinder can be controlled by the control rope. After a set of movable seats complete clamping, the driving block continues to move, which can drive the movable cylinder to rotate. The movable cylinder can drive the moving rod to move to limit the position of the fixed block, so as to keep a stable clamping state, and the other set of movable seats can continue to move to clamp the workpiece.

[0020] The movement of the first positioning seat and the second positioning seat can be controlled by the hydraulic rod to control their clamping force, and at the same time, the first movable seat and the second movable seat can be stably engaged, ensuring the stability of the chain link during subsequent processing. Description of the Drawings

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a top-view structural schematic diagram of the base of the present invention; Figure 3 It is a bottom-view structural schematic diagram of the processing table of the present invention; Figure 4 It is a main-sectional structural schematic diagram of the processing table of the present invention; Figure 5 It is a schematic diagram of the top-sectional structure of the processing platform of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the driving plate of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the first movable seat of the present invention; Figure 8 This is a schematic diagram of the main structure of the fixing block of the present invention; Figure 9 This is a schematic diagram of the main cross-sectional structure of the fixing block of the present invention; Figure 10 For the present invention Figure 8 The enlarged structural diagram at a in the middle.

[0022] In the figure: 1. base; 2. support seat; 3. rotator; 4. processing table; 5. first positioning seat; 6. first movable seat; 7. linkage plate; 8. hydraulic rod; 9. pressure sensor; 10. second positioning seat; 11. second movable seat; 12. fixed block; 13. drive plate; 14. connecting frame; 15. drive block; 16. first drive rod; 17. transmission rod; 18. motor; 19. second drive rod; 20. transmission gear; 21. movable cylinder; 22. torsion spring; 23. control rope; 24. moving rod; 25. guide block; 26. block; 27. blocking plate; 28. slot; 29. ​​reset spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1-10, Embodiment 1: The present invention provides the following technical solution: A turning table for a crawler chain link processing machine tool, including a base 1 and a processing table 4 arranged above the base 1. Rotators 3 are symmetrically arranged at the left and right ends of the processing table 4, and a support seat 2 installed above the base 1 is connected to the outside of the rotator 3. The processing table 4 rotates above the base 1 through the rotator 3. A first positioning seat 5 is arranged above the processing table 4, and a first movable seat 6 is arranged on the right side of the first positioning seat 5. The first positioning seat 5 and the first movable seat 6 provide clamping for the chain link. A second positioning seat 10 is arranged below the processing table 4, and a second movable seat 11 is arranged on the right side of the second positioning seat 10. Moving control mechanisms are connected to the outside of the first movable seat 6 and the second movable seat 11 to control the movement of the second movable seat 11 and the first movable seat 6. And the moving direction of the second movable seat 11 is opposite to the moving direction of the first movable seat 6. The first positioning seat 5 and the second positioning seat 10 are arranged in pairs on the outside of the processing table 4, and the paired first positioning seat 5 and second positioning seat 10 are symmetrically arranged about the center of the processing table 4 front and back, providing paired processing stations for the processing table 4.

[0025] During use, the crawler chain link to be processed can be placed above the processing table 4, with its left side connected to the first positioning seat 5. Then, the first movable seat 6 is controlled to move through the moving control mechanism, and in cooperation with the first positioning seat 5, clamping and limiting of the crawler chain link are achieved. Subsequently, the chain link can be processed. The processing table 4 can be controlled to rotate through the rotator 3, driving the chain link to move and adjusting the processing position. After processing, the processing table 4 can be rotated half a circle, causing the chain link to move below the processing table 4. At the same time, the second positioning seat 10 and the second movable seat 11 move above the processing table 4. The product can continue to be placed inside the second positioning seat 10 and the second movable seat 11 for clamping. At the same time, the first movable seat 6 can move to the right to release the limit on the chain link, causing the chain link to fall, and then it can be collected.

[0026] Embodiment 2: On the basis of Embodiment 1, it is disclosed that the mobile control mechanism includes a fixed block 12, a driving plate 13, a connecting mechanism and a driving mechanism. The fixed block 12 is respectively fixed on the surfaces of the first movable seat 6 and the second movable seat 11, and a horizontal sliding structure is formed between the fixed block 12 inside the processing table 4 and the processing table 4. The driving plate 13 is arranged on the left side of the fixed block 12 to provide driving force for the movement of the fixed block 12. The connecting mechanism is arranged on the right side of the driving plate 13 to control the connection between the driving plate 13 and the fixed block 12. The driving mechanism is connected to the driving plate 13 to control the movement of the driving plate 13. The driving mechanism includes a connecting frame 14, a driving block 15 and a reverse control mechanism. The connecting frame 14 is fixed on the right side of the driving plate 13. The driving block 15 is arranged inside the connecting frame 14, and a left-right sliding structure is formed between the driving block 15 and the processing table 4. The reverse control mechanism is connected to the driving block 15 to control the movement of the driving block 15. The reverse control mechanism includes a first driving rod 16, a transmission rod 17, a motor 18, a second driving rod 19 and a transmission gear 20. The first driving rod 16 penetrates through the driving block 15 and forms a threaded connection with the driving block 15. The transmission rod 17 is fixed to the left end of the first driving rod 16. The motor 18 is connected to the transmission rod 17 to control the rotation of the transmission rod 17. The second driving rod 19 is located below the first driving rod 16, and the second driving rod 19 controls the fixed block 12 outside the second movable seat 11. The transmission gears 20 are respectively arranged on the left sides of the first driving rod 16 and the second driving rod 19, and the two groups of transmission gears 20 are meshed with each other.

[0027] When controlling the movement of the first movable seat 6, the motor 18 can be used to drive the first driving rod 16 to rotate. When the first driving rod 16 rotates, it drives the second driving rod 19 to rotate in the reverse direction synchronously through the meshing transmission of the transmission gears 20, so that the first driving rod 16 drives the driving block 15 and the first movable seat 6 to move, and at the same time, the second driving rod 19 drives the second movable seat 11 to move in the opposite direction, realizing the clamping and contact clamping control of the chain link.

[0028] Embodiment 3: On the basis of Embodiment 2, it is disclosed that the connecting mechanism includes a movable cylinder 21, a torsion spring 22, a control rope 23 and a locking mechanism. The movable cylinder 21 is rotatably installed inside the fixed block 12. The torsion spring 22 is installed outside the movable cylinder 21 to provide a rotational reset force for the movable cylinder 21. The control rope 23 is wound around the surface of the movable cylinder 21, and the left end of the control rope 23 is fixedly connected to the driving plate 13. The locking mechanism is arranged inside the processing table 4 to lock the position of the fixed block 12. The locking mechanism includes a moving rod 24, a guiding block 25 and a limiting and buffering mechanism. The moving rod 24 passes through the movable cylinder 21 and forms a threaded connection therebetween. The guiding block 25 is fixed above the moving rod 24, and a vertical sliding structure is formed between the guiding block 25 and the fixed block 12. The limiting and buffering mechanism is arranged below the moving rod 24 to provide buffering for the continuous downward movement of the moving rod 24. The limiting and buffering mechanism includes a clamping block 26, a blocking plate 27, a clamping groove 28 and a reset spring 29. The clamping block 26 is fixed below the moving rod 24. The blocking plate 27 is arranged outside the clamping block 26, and a vertical sliding structure is formed between the blocking plate 27 and the processing table 4. The clamping grooves 28 are horizontally and evenly formed on the upper surface of the blocking plate 27, and a clamping structure is formed between the clamping grooves 28 and the clamping block 26. The reset spring 29 is arranged below the blocking plate 27 to provide a reset thrust for the blocking plate 27. Synchronous control mechanisms are arranged on the outer sides of the first positioning seat 5 and the second positioning seat 10 to control the clamping state of the chain links. The synchronous control mechanism includes a linkage plate 7, a hydraulic rod 8 and a pressure sensor 9. The linkage plate 7 is fixed inside the first positioning seat 5 and the second positioning seat 10. The hydraulic rod 8 is connected to the linkage plate 7 to control the movement of the linkage plate 7. The pressure sensor 9 is arranged on the surfaces of the first positioning seat 5 and the second positioning seat 10 to detect the clamping force thereof.

[0029] When clamping chain links of different sizes through the first movable seat 6, after a group of first movable seats 6 complete the clamping, the driving block 15 continues to move. The driving block 15 will push the driving plate 13 to pull the control rope 23 to move, so that the control rope 23 drives the movable cylinder 21 to rotate. The movable cylinder 21 drives the moving rod 24 to move vertically, so that the clamping block 26 below the moving rod 24 is connected to the clamping groove 28 to limit the fixed block 12. And as the movable cylinder 21 rotates, the moving rod 24 can continuously press down the blocking plate 27 to move, so that another group of first movable seats 6 can continue to move to complete the clamping. After both groups of first movable seats 6 complete the clamping, the first movable seats 6 are positioned through the engagement of the clamping block 26 and the clamping groove 28. At the same time, the hydraulic rod 8 can be used to control the movement of the first positioning seat 5 to press the chain link tightly, and the clamping force can be monitored in cooperation with the pressure sensor 9.

[0030] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A turning table for a crawler chain link processing machine tool, comprising a base (1) and a processing table (4) arranged above the base (1); Features: Rotators (3) are symmetrically arranged at the left and right ends of the processing table (4), and the outer side of the rotator (3) is connected to a support seat (2) installed above the base (1). The processing table (4) rotates above the base (1) through the rotator (3). A first positioning seat (5) is arranged above the processing table (4), and a first movable seat (6) is arranged on the right side of the first positioning seat (5). The first positioning seat (5) and the first movable seat (6) provide clamping for the chain link. A second positioning seat (10) is arranged below the processing table (4), and a second positioning seat (10) is arranged on the right side of the second positioning seat (10). A second movable seat (11) is provided. The outer sides of the first movable seat (6) and the second movable seat (11) are both connected to a movement control mechanism for controlling the movement of the second movable seat (11) and the first movable seat (6). The movement direction of the second movable seat (11) is opposite to the movement direction of the first movable seat (6). The first positioning seat (5) and the second positioning seat (10) are arranged in pairs on the outer side of the processing table (4). The paired first positioning seat (5) and the second positioning seat (10) are arranged symmetrically front and back about the center of the processing table (4), thereby providing paired processing stations for the processing table (4).

2. The turning table for crawler chain link processing machine tool according to claim 1, characterized in that: The movement control mechanism comprises a fixed block (12), a drive plate (13), a connecting mechanism and a drive mechanism; A fixed block (12) is fixed to the surface of the first movable seat (6) and the second movable seat (11), respectively, and the fixed block (12) is located inside the processing table (4) and between the processing tables (4) to form a horizontal sliding structure; A driving plate (13) is arranged on the left side of the fixed block (12) to provide a driving force for the movement of the fixed block (12); A connecting mechanism, arranged on the right side of the driving plate (13), controlling the connection between the driving plate (13) and the fixing block (12); The driving mechanism is connected to the driving plate (13) to control the movement of the driving plate (13).

3. The turning table for crawler chain link processing machine tool according to claim 2, characterized in that: The driving mechanism comprises a connecting frame (14), a driving block (15) and a reverse control mechanism; A connecting frame (14) is fixed to the right side of the driving plate (13); A driving block (15) is arranged on the inner side of the connecting frame (14), and a left-right sliding structure is formed between the driving block (15) and the processing table (4); The reverse control mechanism is connected to the driving block (15) to control the movement of the driving block (15).

4. The turning table for crawler chain link processing machine tool according to claim 3, characterized in that: The reverse control mechanism comprises a first driving rod (16), a transmission rod (17), a motor (18), a second driving rod (19) and a transmission gear (20); A first driving rod (16) passes through the driving block (15) and forms a threaded connection between the driving block (15); The transmission rod (17) is fixed to the left end of the first driving rod (16); A motor (18) is connected to the transmission rod (17) to control the rotation of the transmission rod (17); A second driving rod (19) is located below the first driving rod (16), and the second driving rod (19) controls the fixed block (12) outside the second movable seat (11); The transmission gears (20) are respectively arranged on the left side of the first driving rod (16) and the second driving rod (19), and the two sets of transmission gears (20) are meshed with each other.

5. The turning table for crawler chain link processing machine tool according to claim 2, characterized in that: The connection mechanism comprises a movable cylinder (21), a torsion spring (22), a control rope (23) and a locking mechanism; A movable cylinder (21) is rotatably mounted inside the fixed block (12); A torsion spring (22) is installed on the outer side of the movable cylinder (21) to provide a rotational reset force for the movable cylinder (21); A control rope (23) is wound around the surface of the movable cylinder (21), and a left end of the control rope (23) is fixedly connected to the driving plate (13); The locking mechanism is arranged inside the processing table (4) and locks the position of the fixing block (12).

6. The turning table for crawler chain link processing machine tool according to claim 5, characterized in that: The locking mechanism comprises a moving rod (24), a guide block (25) and a limit buffer mechanism; A movable rod (24) passes through the movable cylinder (21) and is threadedly connected with the movable cylinder (21); A guide block (25) is fixed above the moving rod (24), and an up-and-down sliding structure is formed between the guide block (25) and the fixed block (12); The position limiting buffer mechanism is arranged below the moving rod (24) and provides buffering for the continuous downward movement of the moving rod (24).

7. The turning table for crawler chain link processing machine tool according to claim 6, characterized in that: The position limiting buffer mechanism comprises a clamping block (26), a blocking plate (27), a clamping slot (28) and a return spring (29); A clamping block (26) is fixed below the moving rod (24); A blocking plate (27) is arranged outside the clamping block (26), and an up-and-down sliding structure is formed between the blocking plate (27) and the processing table (4); The card slots (28) are evenly and horizontally arranged on the upper surface of the blocking plate (27), and a card slot (28) and a card block (26) form a card engagement structure; A return spring (29) is arranged below the blocking plate (27) to provide a return thrust for the blocking plate (27).

8. The turning table for crawler chain link processing machine tool according to claim 7, characterized in that: Synchronous control mechanisms are provided on the outer sides of the first positioning seat (5) and the second positioning seat (10) to control the clamping state of the chain links.

9. The turning table for crawler chain link processing machine tool according to claim 8, characterized in that: The synchronous control mechanism comprises a linkage plate (7), a hydraulic rod (8) and a pressure sensor (9); A linkage plate (7) fixed on the inner sides of the first positioning seat (5) and the second positioning seat (10); A hydraulic rod (8) is connected to the linkage plate (7) to control the movement of the linkage plate (7); The pressure sensor (9) is arranged on the surface of the first positioning seat (5) and the second positioning seat (10) to detect the clamping force thereof.

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