Mechanical clamping jaw for mechanical manufacturing

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By designing a mechanical jaw using motor drive gear and transmission gear, combining the coordination of the connecting rod and gear and adsorption structure, the problems of unstable clamping and inconvenient use in the prior art are solved, and stable clamping and flexible use of workpieces of different shapes and regular shapes are achieved.

CN222552932UActive Publication Date: 2025-03-04YANTAI AUTOMOBILE ENG PROFESSIONAL COLLEGE

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Patent Information

Application Number: CN202420230109.3
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-01-31
Publication Date: 2025-03-04
Estimated Expiration: 2034-01-31

AI Technical Summary

Technical Problem

The mechanical jaws in the prior art need to be selected according to the shape of the workpiece and processing requirements when used, which are inconvenient to use and unstable clamping.

Method used

A mechanical clamping jaw is designed, using a combination of motor drive gear and transmission gear. Through the coordination of connecting rod and gear, the shape of the clamping jaws is changed, adapted to workpieces of different shapes and regular shapes, and assisted by clamping through adsorption structures.

Benefits of technology

Improves the practicality and flexibility of mechanical jaws, and can firmly clamp workpieces of different shapes and rules, reducing the complexity and instability of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a mechanical clamping jaw for mechanical manufacturing, which relates to the technical field of mechanical clamping jaws and comprises a connecting block, fixing blocks are fixedly mounted at the bottom of the connecting block in a symmetrical structure, a first motor is fixedly mounted in the connecting block, and a gear is arranged at the rotational joint of a third connecting rod and a second connecting rod. And the rack is meshed with the gear. The driving gear rotates between the fixing blocks through the first motor, then the first connecting rod, the second connecting rod and the third connecting rod can play a role of a clamping jaw through the meshing relation between the transmission gears, and a workpiece is clamped; by means of the structure, the technical problems that according to a clamp in the prior art, the clamping jaw type is generally selected according to clamping of different objects, when the clamping jaw is used, the shape of the clamping jaw needs to be considered according to the shape of a workpiece and the machining requirement, and use is inconvenient and unstable can be solved. And the practicability and the flexibility of the whole mechanical clamping jaw for mechanical manufacturing are improved.

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Description

Technical Field

[0001] The utility model relates to the technical field of mechanical clamps, in particular to a mechanical clamp made by machinery. Background Art

[0002] The mechanical gripper used in mechanical manufacturing is an important fixture, which is mainly used to fix and clamp the workpiece for machining or assembly. The mechanical gripper is usually made of metal material, has high hardness and wear resistance, and can withstand large clamping force and friction. There are many types of mechanical grippers, which can be divided into different types according to different classification standards. According to the function of the gripper, it can be divided into fixed grippers and adjustable grippers; according to the shape of the gripper, it can be divided into cylindrical grippers, flat grippers and hook grippers, etc. Different types of mechanical grippers are suitable for different workpiece shapes and processing requirements. The design of the mechanical gripper needs to consider factors such as the shape, size and processing requirements of the workpiece.

[0003] Mechanical grippers are widely used in mechanical manufacturing. They can be used in various machine tools, assembly lines, production lines and other occasions. By using mechanical grippers, workpieces can be fixed and clamped quickly and accurately, improving processing accuracy and production efficiency. At the same time, it can also reduce the labor intensity of workers. Mechanical grippers have become one of the indispensable important tools in modern mechanical manufacturing.

[0004] However, the clamps in the prior art generally select the type of jaws according to the different objects to be clamped. When using the jaws, it is necessary to consider the shape of the jaws according to the shape of the workpiece and the processing requirements, which is inconvenient to use. Moreover, the jaws in the prior art only rely on squeezing the workpiece during use to clamp and fix the workpiece, which is not very stable. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a mechanical clamp manufactured by a machine to solve the technical problems that the clamps in the prior art generally select the type of clamp according to the use of different objects, and when using the clamp, it is necessary to consider the shape of the clamp according to the shape of the workpiece and the processing requirements, which makes it inconvenient and unstable to use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanically manufactured mechanical clamp, comprising a connecting block, a fixed block is fixedly installed at the bottom of the connecting block in a symmetrical structure, a first motor is fixedly installed in the connecting block, a driving gear is fixedly connected to the output end of the first motor, the driving gear is located between the fixed blocks and is rotatably connected to the fixed blocks, a plurality of groups of transmission gears are rotatably connected between the fixed blocks, the transmission gears are located between the fixed blocks in a symmetrical structure, and the transmission gears are meshed with each other, a first connecting rod is fixedly installed on the transmission gear, a second connecting rod is rotatably connected to the end of the first connecting rod, a third connecting rod is rotatably connected to the end of the second connecting rod, an adsorption structure is provided on the inner side of the second connecting rod, a convex block is provided on the outer side of the second connecting rod, a lead screw is rotatably connected between the convex blocks, a driving structure is fixedly installed on one end of the lead screw, a limiting block is movably connected to the lead screw, a rack is fixedly installed on one side of the limiting block, a gear is provided at the rotational connection between the third connecting rod and the second connecting rod, and the rack is meshed with the gear.

[0007] By adopting the above technical scheme, the first motor causes the driving gear to rotate between the fixed blocks, and then the two sets of transmission gears can rotate relative to each other at the same time through the meshing relationship between the transmission gears, so that the first connecting rod, the second connecting rod and the third connecting rod can play the role of clamps to clamp the workpiece. At this time, the clamps are all semi-arc structures and can clamp irregular workpieces. At the same time, according to actual use requirements, the angle of the third connecting rod can be changed through the mutual cooperation between the driving mechanism, the rack and the gear until the inner surface of the third connecting rod is flush with the inner surface of the second connecting rod. At this time, the shape of the clamp is relatively parallel, and relatively regular workpieces can be clamped and fixed. This structure can solve the problem that the clamp in the technology generally selects the type of clamp according to the use of different objects for clamping. When using the clamp, it is necessary to consider the shape of the clamp according to the shape of the workpiece and the processing requirements, and the technical problems of inconvenience and instability in use are improved, so that the practicality and flexibility of the mechanical clamp of the entire mechanical manufacturing are improved.

[0008] The utility model is further configured as follows: the adsorption structure includes a suction nozzle, a pressure block, a connecting rod, a movable block, a vacuum cylinder, a movable rod, and a piston block. The vacuum cylinder is located inside the second connecting rod, the connecting rod is located between the pressure block and the movable block, and the pressure block is an annular structure and can move up and down on the outside of the vacuum cylinder. The movable rod is fixed to the top of the movable block, and the piston block is fixedly connected to the movable rod. The piston block fits against the inner wall of the vacuum cylinder, and the suction nozzle is provided between the vacuum cylinder and the second connecting rod, and the suction nozzle is located in the middle of the pressure block.

[0009] By adopting the above technical solution, when the clamping jaws clamp the workpiece, the pressure block is squeezed and moves into the second connecting rod, and then the connecting rod and the movable block cooperate with each other, so that the movable rod and the piston block also move outward at the same time, so that the vacuum cylinder gradually becomes a negative pressure state, and then the suction nozzle can adsorb the workpiece, which can assist the clamping jaws to clamp and fix the workpiece, thereby preventing the workpiece from loosening or displacement in the clamping jaws.

[0010] The utility model is further configured that a movable groove used to cooperate with the movable block and the pressure block is opened in the second connecting rod, and a return spring is fixedly installed between the bottom of the movable block and the movable groove.

[0011] By adopting the above technical solution, the movable groove is set so that the pressure block and the movable block can perform telescopic movement in the second connecting rod. The reset spring fixedly installed between the movable block and the movable groove can assist the movable block and the pressure block to quickly reset, so that they can be reused.

[0012] The utility model is further configured that a fourth connecting rod is rotatably connected between the fixing block and the second connecting rod.

[0013] By adopting the above technical solution, the fourth connecting rod can enable the entire clamping jaw to flexibly and stably clamp and fix the workpiece.

[0014] The utility model is further configured as follows: the driving structure includes a protective shell and a second motor, the output end of the second motor is fixedly connected to the screw rod, the protective shell is fixed to one side of the protrusion, the second motor is located inside the protective shell, and a sliding groove is provided on one side of the rack for matching the protrusion and the screw rod.

[0015] By adopting the above technical solution, the second motor drives the screw to rotate in the protrusion, and then drives the rack to move on the second connecting rod. During this period, the sliding groove can enable the rack to move stably between the protrusions. Secondly, the protective shell can support and fix the second motor while achieving the effect of sound insulation and shock absorption.

[0016] In summary, the utility model mainly has the following beneficial effects:

[0017] 1. The utility model uses a first motor to make the driving gear rotate between the fixed blocks, and then through the meshing relationship between the transmission gears, the two sets of transmission gears can rotate relatively at the same time, and then the first connecting rod, the second connecting rod and the third connecting rod can play the role of clamps to clamp the workpiece. At this time, the clamps are all semi-arc structures that can clamp irregular workpieces. At the same time, according to actual use requirements, the angle of the third connecting rod can be changed through the mutual cooperation between the driving mechanism, the rack and the gear until the inner surface of the third connecting rod is flush with the inner surface of the second connecting rod. At this time, the shape of the clamp is relatively parallel, and a relatively regular workpiece can be clamped and fixed. This structure can solve the problem that the clamp in the technology generally selects the type of clamp according to the use of different objects. When using the clamp, it is necessary to consider the shape of the clamp according to the shape of the workpiece and the processing requirements, and the technical problems of inconvenience and instability in use are improved, so that the practicality and flexibility of the mechanical clamp of the entire mechanical manufacturing are improved;

[0018] 2. In the utility model, when the clamping jaws clamp the workpiece, the pressure block is squeezed and moves into the second connecting rod, and then the connecting rod and the movable block cooperate with each other, so that the movable rod and the piston block also move outward at the same time, so that the vacuum cylinder gradually becomes a negative pressure state, and then the workpiece can be adsorbed through the suction nozzle, which can assist the clamping jaws to clamp and fix the workpiece, thereby preventing the workpiece from loosening or displacement in the clamping jaws. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of a partial structural cross-sectional effect of the utility model;

[0021] Figure 3 This is a schematic diagram of the main structural section effect of the utility model from the first viewing angle;

[0022] Figure 4 It is a schematic diagram of the main structural section effect of the utility model from a second viewing angle;

[0023] Figure 5 For the utility model Figure 3 Schematic diagram of the magnified effect of A in the middle;

[0024] Figure 6 For the utility model Figure 4 Schematic diagram of the magnified effect of B in the middle;

[0025] Figure 7 For the utility model Figure 2 Schematic diagram of the magnified effect of C in the middle.

[0026] In the figure: 1. connecting block; 2. fixing block; 3. first connecting rod; 4. second connecting rod; 5. third connecting rod; 6. fourth connecting rod; 7. first motor; 8. driving gear; 9. transmission gear; 10. suction nozzle; 11. pressing block; 12. connecting rod; 13. movable block; 14. return spring; 15. vacuum pump; 16. movable rod; 17. piston block; 18. movable groove; 19. protective shell; 20. second motor; 21. protrusion; 22. rack; 23. slide groove; 24. limit block; 25. gear; 26. screw rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0028] The following describes an embodiment of the utility model based on its overall structure.

[0029] A mechanical gripper made by a machine, such as Figure 1-7 As shown, it includes a connecting block 1, a fixed block 2 is fixedly installed at the bottom of the connecting block 1 in a symmetrical structure, a first motor 7 is fixedly installed in the connecting block 1, a driving gear 8 is fixedly connected to the output end of the first motor 7, the driving gear 8 is located between the fixed blocks 2 and is rotatably connected to the fixed blocks 2, a plurality of transmission gears 9 are rotatably connected between the fixed blocks 2, the transmission gears 9 are located between the fixed blocks 2 in a symmetrical structure, and the transmission gears 9 are meshed with each other, a first connecting rod 3 is fixedly installed on the transmission gear 9, a second connecting rod 4 is rotatably connected to the end of the first connecting rod 3, a third connecting rod 5 is rotatably connected to the end of the second connecting rod 4, an adsorption structure is provided on the inner side of the second connecting rod 4, a protrusion 21 is provided on the outer side of the second connecting rod 4, a screw rod 26 is rotatably connected between the protrusions 21, a driving structure is fixedly installed on one end of the screw rod 26, a limiting block 24 is movably connected to the screw rod 26, a rack 22 is fixedly installed on one side of the limiting block 24, a gear 25 is provided at the rotational connection between the third connecting rod 5 and the second connecting rod 4, and the rack 22 meshes with the gear 25.

[0030] When in use, the first motor 7 causes the driving gear 8 to rotate between the fixed blocks 2, and then the two sets of transmission gears 9 can be relatively rotated at the same time through the meshing relationship between the transmission gears 9, so that the first connecting rod 3, the second connecting rod 4 and the third connecting rod 5 can play the role of clamps to clamp the workpiece. At this time, the clamps are all semi-arc structures and can clamp irregular workpieces. At the same time, according to actual use requirements, the angle of the third connecting rod 5 can be changed through the mutual cooperation between the driving mechanism, the rack 22 and the gear 25, until the inner surface of the third connecting rod 5 is flush with the inner surface of the second connecting rod 4. At this time, the shape of the clamps is relatively parallel, and relatively regular workpieces can be clamped and fixed. This structure can solve the problem that the clamps in the technology generally select the type of clamps according to the use of different objects for clamping. When using the clamps, it is necessary to consider the shape of the clamps according to the shape of the workpiece and the processing requirements, and the technical problems of inconvenience and instability in use, so that the practicality and flexibility of the mechanical clamps manufactured by the entire machine are improved.

[0031] Furthermore, when the clamping jaws clamp the workpiece, the pressure block 11 is squeezed and moves into the second connecting rod 4, and then through the mutual cooperation between the connecting rod 12 and the movable block 13, the movable rod 16 and the piston block 17 are also moved outward at the same time, so that the vacuum cylinder 15 gradually becomes a negative pressure state, and then the suction nozzle 10 can adsorb the workpiece, which can assist the clamping jaws to clamp and fix the workpiece to prevent the workpiece from loosening or displacement in the clamping jaws, and then the movable groove 18 is set to facilitate the pressure block 11 and the movable block 13 to be able to telescopic movement in the second connecting rod 4, and the reset spring 14 fixedly installed between the movable block 13 and the movable groove 18 can assist the movable block 13 and the pressure block 11 to be quickly reset, so that they can be reused.

[0032] The fourth connecting rod 6 provided in the utility model can enable the entire clamp to flexibly and stably clamp and fix the workpiece, and the second motor 20 provided drives the screw rod 26 to rotate in the protrusion 21, and then drives the rack 22 to move on the second connecting rod 4. During this period, the slide groove 23 can enable the rack 22 to move stably between the protrusions 21. Secondly, the protective shell 19 can support and fix the second motor 20 while achieving the effect of silencing and shock absorbing.

[0033] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A mechanical gripper manufactured by a machine, comprising a connecting block (1), a fixing block (2) being fixedly mounted on the bottom of the connecting block (1) in a symmetrical structure, characterized in that: A first motor (7) is fixedly installed in the connecting block (1); an output end of the first motor (7) is fixedly connected to a driving gear (8); the driving gear (8) is located between the fixed blocks (2) and is rotatably connected to the fixed blocks (2); a plurality of transmission gears (9) are rotatably connected between the fixed blocks (2); the transmission gears (9) are symmetrically located between the fixed blocks (2) and mesh with each other; a first connecting rod (3) is fixedly installed on the transmission gear (9); an end of the first connecting rod (3) is rotatably connected to a second connecting rod (4); and the second connecting rod (5) is rotatably connected to the fixed blocks (2). The end of the connecting rod (4) is rotatably connected to a third connecting rod (5); an adsorption structure is provided on the inner side of the second connecting rod (4); a convex block (21) is provided on the outer side of the second connecting rod (4); a screw rod (26) is rotatably connected between the convex blocks (21); a driving structure is fixedly installed on one end of the screw rod (26); a limit block (24) is movably connected to the screw rod (26); a rack (22) is fixedly installed on one side of the limit block (24); a gear (25) is provided at the rotatable connection between the third connecting rod (5) and the second connecting rod (4); and the rack (22) is meshed with the gear (25).

2. A mechanical gripper manufactured by a machine according to claim 1, characterized in that: The adsorption structure comprises a suction nozzle (10), a pressure block (11), a connecting rod (12), a movable block (13), a vacuum cylinder (15), a movable rod (16), and a piston block (17); the vacuum cylinder (15) is located inside the second connecting rod (4); the connecting rod (12) is located between the pressure block (11) and the movable block (13); the pressure block (11) is an annular structure and can move up and down outside the vacuum cylinder (15); the movable rod (16) is fixed to the top of the movable block (13); the piston block (17) is fixedly connected to the movable rod (16); the piston block (17) is in contact with the inner wall of the vacuum cylinder (15); the suction nozzle (10) is provided between the vacuum cylinder (15) and the second connecting rod (4); the suction nozzle (10) is located in the middle of the pressure block (11).

3. A mechanical gripper manufactured by a machine according to claim 2, characterized in that: The second connecting rod (4) is provided with a movable groove (18) for use with the movable block (13) and the pressure block (11), and a return spring (14) is fixedly installed between the bottom of the movable block (13) and the movable groove (18).

4. A mechanical gripper manufactured by a machine according to claim 1, characterized in that: A fourth connecting rod (6) is rotatably connected between the fixed block (2) and the second connecting rod (4).

5. A mechanical gripper manufactured by a machine according to claim 1, characterized in that: The driving structure comprises a protective shell (19) and a second motor (20), wherein an output end of the second motor (20) is fixedly connected to the screw rod (26), the protective shell (19) is fixed to one side of the protrusion (21), the second motor (20) is located inside the protective shell (19), and a sliding groove (23) for matching the protrusion (21) and the screw rod (26) is provided on one side of the rack (22).