Lightweight high-strength joint assembly industrial robot and method of use thereof

Abstract

The application relates to the technical field of industrial robots, and discloses a lightweight high-strength joint assembly industrial robot and a use method thereof, which comprises an industrial robot body, the top end of the industrial robot body is provided with a clamping assembly, and the clamping assembly comprises a mounting frame fixedly installed at the top end of the industrial robot body. When the thin wall of the shell is greatly deformed, the rotating plate drives the second driven gear to rotate through the sector gear, the second driven gear drives the indicator to rotate, when the turning angle of the indicator is greater than 90 DEG, the operator can directly see the prompt of the indicator, at the moment, the operator can judge that the clamping force of the shell part is too large, the clamping force of the driving motor can be timely adjusted, through the device, the operator can directly and timely see whether the shell part is clamped and deformed by the clamping jaw, and excessive clamping force leading to product batch deformation and scrapping is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial robots, and particularly relates to a lightweight high-strength joint assembly industrial robot and a use method thereof. BACKGROUND

[0002] Industrial robots are multi-joint manipulators or multi-degree-of-freedom machine devices for industrial fields, which can automatically perform work and realize various functions by self power and control ability. The industrial robots can be controlled by humans or run according to pre-arranged programs. Modern industrial robots can also act according to the principles and guidelines formulated by artificial intelligence technology. Industrial robots can replace humans to perform some monotonous, frequent and repetitive long-time operations or operations in dangerous and harsh environments, such as stamping, pressure casting, heat treatment, welding, coating, plastic product forming, machining and simple assembly processes, and in the atomic energy industry and other departments, to complete the transportation or process operation of hazardous materials to human bodies.

[0003] The existing industrial robot (publication number: CN106113075B) has at least the following disadvantages:

[0004] When the above patent is used, the inductor arranged in the inside of the grabbing claw can perform simple data analysis and processing on the grabbed object, increase the functionality, and ensure the safety of the transported object. Since some products are thin-walled shell parts during aluminum alloy stamping and casting, the mechanical claw will deform the thin-walled part when clamping the part. If the operator does not find it in time, excessive clamping force will cause the product batch to be deformed and scrapped. SUMMARY

[0005] The present application relates to the technical field of industrial robots, and particularly relates to a lightweight high-strength joint assembly industrial robot and a use method thereof.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] The utility model provides a kind of lightweight high-strength joint assembly industrial robot, including industrial robot body, the top of the industrial robot body is provided with gripper assembly, the gripper assembly includes mounting bracket fixedly installed in the top of industrial robot body, the outer surface of opposite two sides of mounting bracket is symmetrically opened with two installation grooves, the inner wall of two installation grooves is symmetrically rotatably installed with two L type rotating rods, the bottom of two L type rotating rods is rotatably installed with gripper claw, the inside of gripper claw is hollow, the inner wall of gripper claw is rotatably installed with rotating shaft, the both ends of rotating shaft are fixedly installed with connecting rod, the outer surface of connecting rod is rotatably installed with mounting bracket, the outer surface of gripper claw adjacent side is penetrated and opened with opening, the inner wall of opening is slidably installed with top head, the outer surface of top head close to another gripper claw is provided with circular arc surface, the inner wall of gripper claw is fixedly installed with mounting plate, the outer surface of mounting plate is slidably inserted with slide column, one end of slide column is fixedly installed with the outer surface of top head and the outer surface of mounting plate.

[0008] As a further scheme of the utility model, the outer surface of one end of slide column close to top head is fixedly installed with baffle, the outer surface of slide column is sleeved with first spring, and the first spring is arranged between baffle and mounting plate.

[0009] As a further scheme of the utility model, the other end of slide column is fixedly installed with guide column, the inner wall between gripper claw is rotatably installed with flap, the outer surface of one end of flap close to slide column is penetrated and opened with waist type slot, the other end of slide column is penetrated waist type slot, and the flap is arranged between guide column and mounting plate.

[0010] As a further scheme of the utility model, the inner wall between gripper claw is rotatably installed with first driven gear, the first driven gear is arranged at one end of flap away from slide column, the outer surface of rotation center of first driven gear is fixedly installed with cam, the outer surface of flap is abutted with cam, the outer surface of rotating shaft is fixedly installed with driving gear, the driving gear is engaged with first driven gear, the outer surface of flap close to cam is fixedly installed with second spring, and the other end of second spring is fixedly connected with the inner wall of gripper claw.

[0011] As a further scheme of the utility model, the inner wall between gripper claw is rotatably installed with signboard, the both ends of signboard are fixedly installed with second driven gear, the inner wall of opposite two sides of gripper claw is rotatably installed with sector gear, and the sector gear is engaged with second driven gear.

[0012] As a further scheme of the utility model, the outer surface of sector gear is fixedly installed with rotating plate, the outer surface of one end of rotating plate close to slide column is penetrated and opened with guide slot, and guide column is slidably installed with the inner wall of guide slot.

[0013] As a further scheme of the present application, the top end of the mounting frame is fixedly provided with a driving motor, the output end of the driving motor is fixedly provided with a lead screw penetrating through the outer surface of the mounting frame, the outer surface of the lead screw is threadedly connected with a driving rod, the inner walls near the two ends of the driving rod are both rotationally provided with a connecting rod, the other end of the connecting rod is rotationally connected with the other end of the L-shaped rotating rod, and the connecting rod and the L-shaped rotating rod form a parallelogram structure.

[0014] A use method of a lightweight high-strength joint assembly industrial robot, comprising the following steps:

[0015] S1: the operator sets the clamping jaw to clamp the aluminum alloy shell from above through programming, when the clamping jaw is in a loosened state, the convex surface of the cam abuts against the flap, so that the other end of the flap is lifted, the flap limits the sliding of the sliding column through the guide column, at this time, the sliding column limits the top head to be flush with the clamping surface of the clamping jaw;

[0016] S2: when the two clamping jaws are close to each other, the shell part is clamped, when the two clamping jaws move close to each other, the rotating shaft is driven to rotate, the rotating shaft drives the cam to rotate through the driving gear and the first driven gear, so that the convex surface of the cam is away from the flap, the other end of the flap is away from the guide column through the second spring and does not contact the guide column;

[0017] S3: the sliding column drives the top head to abut against the surface of the shell part through the first spring, when the surface of the shell part is subjected to a relatively large clamping force, the thin wall of the shell part is deformed and bent, at this time, the top head moves away from the flap and protrudes from the clamping surface of the clamping jaw;

[0018] S4: the guide column is driven to move in the direction close to the top head through the sliding column, the guide column drives the rotating plate to rotate through the guide groove, the rotating plate drives the second driven gear to rotate through the sector gear, and the second driven gear drives the indicator to rotate, when the angle of the indicator is greater than 90°, the operator can directly see the prompt of the indicator.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. When the thin wall of the shell part is deformed relatively large, the guide column is driven to move in the direction close to the top head through the sliding column, the guide column drives the rotating plate to rotate through the guide groove, the rotating plate drives the second driven gear to rotate through the sector gear, and the second driven gear drives the indicator to rotate, when the angle of the indicator is greater than 90°, the operator can directly see the prompt of the indicator, at this time, the operator can judge that the clamping force of the shell part is too large, and can timely adjust the clamping force of the driving motor, through the device, the operator can directly and timely see whether the clamping jaw deforms the shell part, and the problem that the product batch is deformed and scrapped due to excessive clamping force is avoided.

[0021] 2. The mechanical joint of the industrial robot body is composed of a lightweight high-strength joint, which improves the flexibility, efficiency and load capacity of the robot movement, reduces energy consumption and improves the reliability of the robot. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The overall structure of the lightweight high-strength joint assembly industrial robot is provided.

[0023] Figure 2 The drive motor of the lightweight high-strength joint assembly industrial robot is provided.

[0024] Figure 3 The mounting frame of the lightweight high-strength joint assembly industrial robot is provided.

[0025] Figure 4 The jaw cross-sectional view of the lightweight high-strength joint assembly industrial robot is provided.

[0026] Figure 5 The top head of the lightweight high-strength joint assembly industrial robot is provided.

[0027] Figure 6 The sign of the lightweight high-strength joint assembly industrial robot is provided.

[0028] Figure 7 The fan gear of the lightweight high-strength joint assembly industrial robot is provided.

[0029] In the figure: 1, industrial robot body; 2, mounting frame; 3, jaw; 4, drive motor; 5, drive rod; 6, screw; 7, L-shaped rotating rod; 8, connecting rod; 9, connecting rod; 10, opening; 11, top head; 12, sign; 13, mounting plate; 14, slide column; 15, baffle; 16, first spring; 17, flap; 18, second spring; 19, drive gear; 20, first driven gear; 21, cam; 22, second driven gear; 23, fan gear; 24, guide groove; 25, guide column; 26, rotating plate; 27, waist-shaped groove; 28, rotating shaft. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0031] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Reference Figures 1-7The utility model provides a kind of lightweight high-strength joint assembly industrial robot, including industrial robot body 1, the top of industrial robot body 1 is provided with gripper assembly, gripper assembly includes mounting bracket 2 fixedly installed in the top of industrial robot body 1, two installation grooves are symmetrically opened in the outer surface of opposite sides of mounting bracket 2, two installation grooves are symmetrically rotatably installed with two L type rotary rods 7, the bottom of two L type rotary rods 7 is rotatably installed with gripper jaw 3, the inside of gripper jaw 3 is hollow, the inner wall of gripper jaw 3 is rotatably installed with rotating shaft 28, the both ends of rotating shaft 28 are fixedly installed with connecting rod 8, the outer surface of mounting bracket 2 is rotatably installed with the other end of connecting rod 8, the outer surface of gripper jaw 3 adjacent side is penetrated and opened with opening 10, the inner wall of opening 10 is slidably installed with top head 11, the outer surface of another gripper jaw 3 close to top head 11 is provided with camber surface, the inner wall of gripper jaw 3 is fixedly installed with mounting plate 13, the outer surface of mounting plate 13 is slidably inserted with slide column 14, one end of slide column 14 is fixedly installed with the outer surface of top head 11 and the outer surface of mounting plate 13, the outer surface of one end of slide column 14 close to top head 11 is fixedly installed with baffle 15, the outer surface of slide column 14 is sleeved with first spring 16, first spring 16 is arranged between baffle 15 and mounting plate 13, the other end of slide column 14 is fixedly installed with guide column 25, the inner wall between gripper jaw 3 is rotatably installed with warped plate 17, the outer surface of one end of warped plate 17 close to slide column 14 is penetrated and opened with waist type groove 27, the other single of slide column 14 is penetrated waist type groove 27, warped plate 17 is arranged between guide column 25 and mounting plate 13, the inner wall between gripper jaw 3 is rotatably installed with first driven gear 20, first driven gear 20 is arranged in one end of warped plate 17 away from slide column 14, the outer surface of the rotation center of first driven gear 20 is fixedly installed with cam 21, cam 21 is abutted with the outer surface of warped plate 17, the outer surface of rotating shaft 28 is fixedly installed with driving gear 19, driving gear 19 is engaged with first driven gear 20, the outer surface of warped plate 17 close to cam 21 is fixedly installed with second spring 18, the other end of second spring 18 is fixedly connected with the inner wall of gripper jaw 3.

[0034] When two gripper jaws 3 move close to each other, rotating shaft 28 is rotated, rotating shaft 28 drives cam 21 to rotate through driving gear 19 and first driven gear 20, so that the convex surface of cam 21 is away from warped plate 17, the other end of warped plate 17 is away from guide column 25 through second spring 18, and does not contact with guide column 25, at this time, slide column 14 drives top head 11 to abut with the surface of shell part through first spring 16, when the surface of shell part is subjected to greater clamping force, the thin wall of shell is deformed and bent, at this time, top head 11 moves away from warped plate 17, and top head 11 protrudes from the clamping surface of gripper jaw 3, so that whether the shell part is deformed by gripper jaw 3 can be directly and intuitively observed by the operator through the device, and the excessive clamping force leading to product batch deformation and scrapping is avoided.

[0035] In this embodiment, the inner wall between the clamping jaw 3 is rotatably mounted with the signboard 12, the two ends of the signboard 12 are fixedly installed with the second driven gear 22, the inner wall of the opposite two sides of the clamping jaw 3 is rotatably installed with the sector gear 23, the sector gear 23 is engaged with the second driven gear 22, the outer surface of the sector gear 23 is fixedly installed with the rotating plate 26, the outer surface of the one end of the rotating plate 26 close to the slide column 14 is penetrated with the guide groove 24, the guide column 25 is slidably installed with the inner wall of the guide groove 24, the top end of the mounting frame 2 is fixedly installed with the driving motor 4, the output end of the driving motor 4 is penetrated with the outer surface of the mounting frame 2 and fixedly installed with the lead screw 6, the outer surface of the lead screw 6 is threadedly connected with the driving rod 5, the inner wall of the two ends of the driving rod 5 is rotatably installed with the connecting rod 9, the other end of the connecting rod 9 is rotatably connected with the other end of the L-shaped rotating rod 7, and the connecting rod 8 and the L-shaped rotating rod 7 form a parallelogram structure.

[0036] The driving motor 4 drives the lead screw 6 to rotate, the lead screw 6 drives the driving rod 5 to move away from the clamping jaw 3, the driving rod 5 drives the L-shaped rotating rod 7 to move close to each other through the connecting rod 9, the L-shaped rotating rod 7 drives the two clamping jaws 3 to move close to each other through the connecting rod 8, when the two clamping jaws 3 are close, the shell parts are clamped, when the thin wall of the shell is deformed greatly, the guide column 25 is driven to move close to the direction of the top head 11 through the slide column 14, the guide column 25 drives the rotating plate 26 to rotate through the guide groove 24, the rotating plate 26 drives the second driven gear 22 to rotate through the sector gear 23, and the second driven gear 22 drives the signboard 12 to rotate, when the angle of the signboard 12 is greater than 90°, the operator can directly see the prompt of the signboard 12.

[0037] In this embodiment, the mechanical joint of the industrial robot body 1 is composed of a lightweight high-strength joint, which improves the flexibility, efficiency and load capacity of the robot movement, reduces energy consumption and improves the reliability of the robot, the clamping surface of the clamping jaw 3 is provided with a rubber pad, and the clamping surface of the clamping jaw 3 is suitable for clamping the shell parts with the same size.

[0038] A use method of a lightweight high-strength joint assembly industrial robot, comprising the following steps:

[0039] S1: the operator sets the clamping jaw 3 to clamp the aluminum alloy shell from above through programming, when the clamping jaw 3 is in a loose state, the convex surface of the cam 21 abuts against the flap 17, so that the other end of the flap 17 is raised, the flap 17 limits the sliding of the slide column 14 through the guide column 25, at this time, the top head 11 is limited to be flush with the clamping surface of the clamping jaw 3 through the slide column 14;

[0040] S2: When the two jaws 3 are close to the shell parts, when the two jaws 3 are close to each other, the rotating shaft 28 is driven to rotate, the rotating shaft 28 drives the cam 21 to rotate through the driving gear 19 and the first driven gear 20, the convex surface of the cam 21 is away from the flap 17, the other end of the flap 17 is away from the guide column 25 through the second spring 18, and the other end is not in contact with the guide column 25;

[0041] S3: The slide column 14 drives the top head 11 to abut against the surface of the shell part through the first spring 16, when the surface of the shell part is subjected to a larger clamping force, the thin wall of the shell will be deformed and bent, at this time, the top head 11 will move away from the flap 17, and the top head 11 will protrude from the clamping surface of the jaw 3;

[0042] S4: The guide column 25 is driven to move in the direction close to the top head 11 through the slide column 14, the guide column 25 drives the rotating plate 26 to rotate through the guide groove 24, the rotating plate 26 drives the second driven gear 22 to rotate through the sector gear 23, and the second driven gear 22 drives the indicator 12 to rotate. When the angle of the indicator 12 is greater than 90°, the operator can directly see the prompt of the indicator 12.

[0043] It needs to be explained that when the present application is used, the operator sets the clamping jaw 3 to clamp the aluminum alloy shell from above. When the clamping jaw 3 is in a loosened state, the raised surface of the cam 21 abuts against the flap 17, so that the other end of the flap 17 is raised and moves. The flap 17 limits the sliding movement of the sliding column 14 through the guide column 25. At this time, the top head 11 is limited to be flush with the clamping surface of the clamping jaw 3 through the sliding column 14. When the clamping jaw 3 clamps the shell part, the driving motor 4 drives the screw rod 6 to rotate, and the screw rod 6 drives the driving rod 5 to move away from the clamping jaw 3. The driving rod 5 drives the L-shaped rotating rod 7 to move towards each other through the connecting rod 9. The L-shaped rotating rod 7 drives the two clamping jaws 3 to move towards each other through the connecting rod 8. When the two clamping jaws 3 move towards each other, the shell part is clamped. When the two clamping jaws 3 move towards each other, the rotating shaft 28 is driven to rotate through the driving gear 19 and the first driven gear 20, so that the raised surface of the cam 21 moves away from the flap 17. The flap 17 moves away from the guide column 25 through the second spring 18, so that the other end of the flap 17 is not in contact with the guide column 25. At this time, the sliding column 14 drives the top head 11 to abut against the surface of the shell part through the first spring 16. When the surface of the shell part is subjected to a relatively large clamping force, the thin wall of the shell will be deformed and bent. At this time, the top head 11 will move away from the flap 17, and the top head 11 will protrude from the clamping surface of the clamping jaw 3. When the thin wall of the shell is deformed greatly, the guide column 25 is driven to move towards the direction of the top head 11 through the sliding column 14. The guide column 25 drives the rotating plate 26 to rotate through the guide groove 24. The rotating plate 26 drives the second driven gear 22 to rotate through the sector gear 23. The second driven gear 22 drives the indicator 12 to rotate. When the indicator 12 is turned over by an angle greater than 90°, the operator can directly see the prompt of the indicator 12. At this time, the operator can judge that the clamping force of the shell part is too large, and can timely adjust the clamping force of the driving motor 4. Through the device, the operator can directly see whether the clamping jaw 3 deforms the shell part in time, so that the product batch is prevented from being deformed and scrapped due to excessive clamping force.

[0044] The basic principles and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A lightweight high-strength joint assembly industrial robot comprising an industrial robot body (1), characterized in that, The top end of the industrial robot body (1) is provided with a clamping assembly, the clamping assembly comprises a mounting frame (2) fixedly installed at the top end of the industrial robot body (1), two mounting grooves are symmetrically formed in the outer surfaces of the opposite sides of the mounting frame (2), two L-shaped rotating rods (7) are symmetrically and rotatably installed on the inner walls of the two mounting grooves, clamping jaws (3) are rotatably installed at the bottom ends of the two L-shaped rotating rods (7), the clamping jaws (3) are hollow, rotating shafts (28) are rotatably installed on the inner walls of the clamping jaws (3), connecting rods (8) are fixedly installed at the two ends of the rotating shafts (28) and penetrate through the outer surfaces of the clamping jaws (3), the other ends of the connecting rods (8) are rotatably installed on the outer surfaces of the mounting frame (2), openings (10) are formed in the outer surfaces of the adjacent sides of the clamping jaws (3), a top head (11) is slidably installed on the inner walls of the openings (10), a circular surface is formed on the outer surface of the top head (11) close to the other clamping jaw (3), mounting plates (13) are fixedly installed on the inner walls of the clamping jaws (3), slide columns (14) are slidably inserted into the outer surfaces of the mounting plates (13), guide columns (25) are fixedly installed at the other ends of the slide columns (14), a flap (17) is rotatably installed between the inner walls of the clamping jaws (3), a waist-shaped groove (27) is formed in the outer surface of the flap (17) close to one end of the slide column (14), the other end of the slide column (14) penetrates through the waist-shaped groove (27), the flap (17) is arranged between the guide column (25) and the mounting plate (13), a signboard (12) is rotatably installed between the inner walls of the clamping jaws (3), second driven gears (22) are fixedly installed at the two ends of the signboard (12), sector gears (23) are rotatably installed on the inner walls of the opposite sides of the clamping jaws (3), the sector gears (23) are engaged with the second driven gears (22), rotating plates (26) are fixedly installed on the outer surfaces of the sector gears (23), guide grooves (24) are formed in the outer surfaces of the rotating plates (26) close to one end of the slide column (14), and the guide columns (25) and the guide grooves (24) are slidably installed.

2. The lightweight high-strength joint assembly industrial robot according to claim 1, characterized in that, A baffle (15) is fixedly installed on the outer surface of one end of the slide column (14) close to the top head (11), a first spring (16) is sleeved on the outer surface of the slide column (14), and the first spring (16) is arranged between the baffle (15) and the mounting plate (13).

3. The lightweight high-strength joint assembly industrial robot according to claim 1, wherein The inner wall of the clamp jaw (3) is rotatably provided with a first driven gear (20), the first driven gear (20) is provided at one end of the rocker plate (17) away from the slide post (14), the outer surface of the rotation center of the first driven gear (20) is fixedly provided with a cam (21), the cam (21) abuts against the outer surface of the rocker plate (17), the outer surface of the rotating shaft (28) is fixedly provided with a driving gear (19), the driving gear (19) is engaged with the first driven gear (20), the outer surface of the rocker plate (17) close to the cam (21) is fixedly provided with a second spring (18), the other end of the second spring (18) is fixedly connected with the inner wall of the clamp jaw (3).

4. The lightweight high-strength joint assembly industrial robot according to claim 1, wherein The top end of the mounting frame (2) is fixedly provided with a driving motor (4), the output end of the driving motor (4) penetrates through the outer surface of the mounting frame (2) and is fixedly provided with a lead screw (6), the outer surface of the lead screw (6) is threadedly connected with a driving rod (5), the inner wall close to both ends of the driving rod (5) is rotatably provided with a connecting rod (9), the other end of the connecting rod (9) is rotatably connected with the other end of the L-shaped rotating rod (7), and the connecting rod (8) and the L-shaped rotating rod (7) form a parallelogram structure.

5. A method of using a lightweight high-strength articulated assembly industrial robot, characterized by, The industrial robot of the joint assembly with light weight and high strength comprises the following steps: S1: The operator sets the clamp jaw (3) to clamp the aluminum alloy shell from above through programming, when the clamp jaw (3) is in a loosened state, the convex surface of the cam (21) abuts against the rocker plate (17), so that the other end of the rocker plate (17) is lifted, the rocker plate (17) limits the sliding of the slide post (14) through the guide column (25), at this time, the top head (11) is limited to be flush with the clamping surface of the clamp jaw (3) through the slide post (14); S2: When the two clamp jaws (3) are close to each other, the shell parts are clamped, when the two clamp jaws (3) move close to each other, the rotating shaft (28) is driven to rotate, the cam (21) is driven to rotate through the driving gear (19) and the first driven gear (20), so that the convex surface of the cam (21) is away from the rocker plate (17), the other end of the rocker plate (17) is away from the guide column (25) through the second spring (18) and is not in contact with the guide column (25); S3: The slide post (14) drives the top head (11) to abut against the surface of the shell part through the first spring (16), when the surface of the shell part is subjected to a larger clamping force, the thin wall of the shell is deformed and bent, at this time, the top head (11) moves away from the rocker plate (17), and the top head (11) protrudes from the clamping surface of the clamp jaw (3); S4: The guide column (25) is driven to move in the direction close to the top head (11) through the slide post (14), the guide column (25) drives the rotating plate (26) to rotate through the guide groove (24), the rotating plate (26) drives the second driven gear (22) to rotate through the sector gear (23), and the second driven gear (22) drives the indicator (12) to rotate, when the turning angle of the indicator (12) is greater than 90°, the operator can directly see the prompt of the indicator (12).

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