Rear-mounted pneumatic chuck stable in clamping

Abstract

The utility model relates to the technical field of chuck devices, in particular to a stable-clamping rear-mounted pneumatic chuck which comprises a rear-mounted pneumatic chuck body, rotary air inlet is achieved through a gyrator matched with the tail of the rear-mounted pneumatic chuck body so as to achieve quick clamping and loosening actions, an air source is continuous air supply during working, and a double-fixed-pull-rod type pneumatic chuck is adopted. According to the positions and the connection relations of all the parts, air flow enters the first clamping cylinder body, air pressure pushes a first piston in the first clamping cylinder body, meanwhile, the air flow flows to the second clamping cylinder body to push a second piston in the second clamping cylinder body, the pistons drive the first piston and the second piston respectively, and the inner pull rod and the outer pull rod pull the inner sliding block and the outer sliding block so as to drive the clamping jaw to move; the two sets of clamping jaws move linearly towards the center of the chuck at the same time to clamp a workpiece, so that double-transmission clamping can be achieved, and the workpiece is automatically aligned to the center of the chuck.

Description

Technical Field

[0001] The utility model relates to the technical field of chuck devices, in particular to a rear-mounted pneumatic chuck with stable clamping. Background Art

[0002] The chuck is a mechanical device used to clamp the workpiece on the machine tool. It is a machine tool accessory that uses the radial movement of the movable jaws evenly distributed on the chuck body to clamp and position the workpiece. The chuck is generally composed of three parts: the chuck body, the movable jaws and the jaw drive mechanism. The chuck body has a minimum diameter of 65 mm and a maximum diameter of 1500 mm. There is a through hole in the center to allow the workpiece or bar to pass through; the back has a cylindrical or short conical structure, which is directly or through a flange connected to the end of the machine tool spindle. The chuck is usually installed on lathes, external cylindrical grinders and internal cylindrical grinders. It can also be used in conjunction with various indexing devices for milling machines and drilling machines.

[0003] The internal working principle of the current rear-mounted pneumatic chuck is to pull the synchronous structure through the work of a standard single-cylinder cylinder, and then drive the slide device to produce track movement through the movement of the synchronous structure and the shaft connection. A clamping frame is installed on the slide device to achieve the purpose of clamping. Its clamping force is small and unstable, and it is not convenient for small adjustments, resulting in low efficiency. At the same time, its accuracy cannot be maintained for a long time, and the clamping claws are prone to bending and deformation, affecting the rotation accuracy.

[0004] In view of this, we propose a rear-mounted pneumatic chuck with stable clamping. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a rear-mounted pneumatic chuck with stable clamping.

[0006] The technical solution of the utility model is:

[0007] A rear-mounted pneumatic chuck with stable clamping comprises a rear-mounted pneumatic chuck body, a transmission assembly is installed at the front end of the rear-mounted pneumatic chuck body, the transmission assembly comprises: a clamping cylinder body, a piston, an outer pull rod, an inner pull rod, an outer slide block, and a clamping claw, a clamping cylinder body is installed inside the transmission assembly, a clamping cylinder body is installed at the front end of the clamping cylinder body, a piston is provided on the right side of the clamping cylinder body, a piston is provided on the right side of the piston, an outer pull rod is installed on the right side of the piston, an inner pull rod is installed on the side of the outer pull rod, an inner slide block is installed at the front end of the inner pull rod, and an outer slide block is installed at the front end of the outer pull rod.

[0008] As a preferred technical solution, a first clamping claw is installed at the front end of the outer slider, and a second clamping claw is installed at the front end of the inner slider.

[0009] As a preferred technical solution, an auxiliary component is installed on the side of the second clamping jaw, and the auxiliary component includes: a connecting seat, a clamping end, a mounting base, and a clamping cavity. A connecting seat is installed above the auxiliary component, a clamping end is installed at the front end of the connecting seat, and a mounting base is installed on the side of the clamping end.

[0010] As a preferred technical solution, a clamping cavity is provided at the front end of the clamping end, a limit seat is installed on the side of the clamping cavity, and a connecting column is installed on the left side of the auxiliary component.

[0011] As a preferred technical solution, a mounting ring rail is installed on the left side of the connecting column, and a pneumatic inner cavity is installed on the left side of the mounting ring rail.

[0012] As a preferred technical solution, a mounting pad is installed on the left side of the pneumatic inner cavity, and a mounting seat is opened above the pneumatic inner cavity.

[0013] As a preferred technical solution, an upper mounting ring is installed above the mounting seat, a locking plate is provided on the left side of the mounting seat, and a rear connecting end is installed on the left side of the mounting pad.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model realizes rotary air intake through the rotator matched with the tail to achieve rapid clamping and loosening actions. The air source is continuous air supply during operation, and a double fixed pull rod type pneumatic chuck is adopted. The position and connection relationship between the various parts are that the air flow enters the No. 1 clamping cylinder body and the air pressure pushes the No. 1 piston in the No. 1 clamping cylinder body. At the same time, the air flow flows to the No. 2 clamping cylinder body and pushes the No. 2 piston in the No. 2 clamping cylinder body. The pistons are driven respectively, and the inner and outer pull rods pull the inner and outer slide blocks to drive the clamping claws to start moving, so that the two sets of clamping claws move linearly toward the center of the chuck circle at the same time to clamp the workpiece, and in this way, double transmission clamping can be achieved, and the workpiece is automatically aligned with the center of the chuck.

[0016] 2. The utility model pushes the No. 1 piston when the airflow enters the No. 1 clamping cylinder, so that the inner pull rod on the No. 1 piston drives the inner slider, and the No. 1 clamping claw installed on the inner slider starts to move linearly toward the center of the chuck after a series of actions. The working principle of the No. 2 clamping claw: the No. 1 piston and the No. 2 piston are in the chamber formed by the No. 1 clamping cylinder and the No. 2 clamping cylinder, and they move in opposite directions. When the No. 1 clamping cylinder starts to work, the No. 2 clamping cylinder also works at the same time, so that the two sets of clamping claws can achieve synchronous clamping and automatic centering, and the accuracy is greatly improved due to the influence of this structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the rear-mounted pneumatic chuck of the utility model;

[0018] Figure 2 This is a schematic diagram of the appearance component structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the transmission assembly structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the auxiliary component structure of the utility model.

[0021] In the figure: 1. rear-mounted pneumatic chuck body; 11. upper mounting ring; 12. mounting seat; 13. rear connecting end; 14. locking plate; 15. mounting pad; 16. pneumatic inner cavity; 17. mounting ring rail; 18. connecting column; 2. transmission assembly; 21. clamping cylinder body 1; 22. clamping cylinder body 2; 23. piston 1; 24. piston 2; 25. outer pull rod; 26. inner pull rod; 27. outer slide; 28. inner slide; 29. ​​clamping jaw 1; 210. clamping jaw 2; 3. auxiliary assembly; 31. connecting seat; 32. clamping end; 33. mounting base; 34. clamping cavity; 35. limit seat. DETAILED DESCRIPTION

[0022] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] See also Figures 1 to 4 , the utility model provides a technical solution:

[0025] A rear-mounted pneumatic chuck with stable clamping comprises a rear-mounted pneumatic chuck body 1, a transmission assembly 2 is installed at the front end of the rear-mounted pneumatic chuck body 1, the transmission assembly 2 comprises: a clamping cylinder body 21, a piston 23, an outer pull rod 25, an inner pull rod 26, an outer slide block 27, and a clamping claw 29, a clamping cylinder body 21 is installed inside the transmission assembly 2, a clamping cylinder body 22 is installed at the front end of the clamping cylinder body 21, a piston 24 is provided on the right side of the clamping cylinder body 22, a piston 24 is provided on the right side of the piston 24, an outer pull rod 25 is installed on the right side of the piston 24, an inner pull rod 26 is installed on the side of the outer pull rod 25, an inner slide block 28 is installed at the front end of the inner pull rod 26, an outer slide block 27 is installed at the front end of the outer pull rod 25, a clamping claw 29 is installed at the front end of the outer slide block 27, and a clamping claw 210 is installed at the front end of the inner slide block 28.

[0026] It should be added that the rotary air intake is realized through the rotator matched with the tail to achieve rapid clamping and loosening actions. The air source is a continuous air supply during operation, and a double fixed pull rod type pneumatic chuck is adopted. The position and connection relationship between the various parts are that the air flow enters the clamping cylinder body 21 and the air pressure pushes the piston 23 in the clamping cylinder body 21. At the same time, the air flow flows to the clamping cylinder body 22 and pushes the piston 24 in the clamping cylinder body 22. The pistons drive the inner pull rod 26 and the outer pull rod 25 to pull the inner and outer slide blocks 27, thereby driving the clamping claws to start moving, so that the two sets of clamping claws move linearly toward the center of the chuck to clamp the workpiece at the same time, and in this way, double transmission clamping can be achieved, and the workpiece is automatically aligned with the center of the chuck.

[0027] As a preferred embodiment of the present invention, an auxiliary component 3 is installed on the side of the second clamping jaw 210, and the auxiliary component 3 includes: a connecting seat 31, a clamping end 32, a mounting base 33, and a clamping cavity 34. The connecting seat 31 is installed on the top of the auxiliary component 3, the clamping end 32 is installed at the front end of the connecting seat 31, the mounting base 33 is installed on the side of the clamping end 32, a clamping cavity 34 is opened at the front end of the clamping end 32, a limiting seat 35 is installed on the side of the clamping cavity 34, and a connecting column 18 is installed on the left side of the auxiliary component 3.

[0028] It is worth mentioning that, by the airflow entering the clamping cylinder 21 to push the piston 23, the inner pull rod 26 on the piston 23 drives the inner slider 28, and the clamping claw 29 installed on the inner slider 28 starts to move linearly toward the center of the chuck after the above series of actions. The working principle of the clamping claw 210 is as follows: the piston 1 23 and the piston 2 24 are in the same chamber formed by the clamping cylinder 21 and the clamping cylinder 2 22, and do opposite movements. When the clamping cylinder 21 starts to work, the clamping cylinder 2 22 also works at the same time, so that the two sets of clamping claws can achieve synchronous clamping and automatic centering, and the accuracy is also greatly improved due to the influence of this structure.

[0029] As a preferred embodiment of the present invention, a mounting ring rail 17 is installed on the left side of the connecting column 18, a pneumatic inner cavity 16 is installed on the left side of the mounting ring rail 17, a mounting pad 15 is installed on the left side of the pneumatic inner cavity 16, a mounting seat 12 is provided above the pneumatic inner cavity 16, an upper mounting ring 11 is installed above the mounting seat 12, a locking plate 14 is provided on the left side of the mounting seat 12, and a rear connecting end 13 is installed on the left side of the mounting pad 15.

[0030] During specific use, the pull rod is driven by the synchronous and opposite movement of the cylinder piston, thereby driving the clamping claws to clamp the workpiece, generating a clamping action and realizing synchronous and concentric clamping work through a synchronous structure.

[0031] When the utility model is used, a rear-mounted pneumatic chuck with stable clamping realizes rotary air intake through the rotator matched with the tail to achieve rapid clamping and loosening actions. The air source is a continuous air supply during operation, and a double fixed pull rod type pneumatic chuck is adopted. The position and connection relationship between each part are that the air flow enters the clamping cylinder body 21 and the air pressure pushes the piston 23 in the clamping cylinder body 21. At the same time, the air flow flows to the clamping cylinder body 22 and pushes the piston 24 in the clamping cylinder body 22. The pistons respectively drive the inner pull rod 26 and the outer pull rod 25 to pull the inner and outer slide blocks 27, thereby driving the clamping claws to start moving, so that the two groups of clamping claws move linearly toward the center of the chuck circle at the same time to clamp the workpiece, and in this way, To achieve double-transmission clamping, the workpiece is automatically aligned with the center of the chuck, and the air flow enters the clamping cylinder 21 to push the piston 23, so that the inner pull rod 26 on the piston 23 drives the inner slider 28, and the clamping claw 29 installed on the inner slider 28 starts to move linearly toward the center of the chuck after the above series of actions. The working principle of the clamping claw 210 is as follows: the piston 1 23 and the piston 2 24 are in the same chamber formed by the clamping cylinder 21 and the clamping cylinder 2 22, and do opposite movements. When the clamping cylinder 21 starts to work, the clamping cylinder 2 22 also works at the same time, so that the two sets of clamping claws can achieve synchronous clamping and automatic alignment, and the accuracy is also greatly improved due to the influence of this structure.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rear-mounted pneumatic chuck with stable clamping, comprising a rear-mounted pneumatic chuck body (1), characterized in that: A transmission assembly (2) is installed at the front end of the rear-mounted pneumatic chuck body (1), and the transmission assembly (2) includes: a clamping cylinder body (21), a piston (23), an outer pull rod (25), an inner pull rod (26), an outer slide block (27), and a clamping claw (29). A clamping cylinder body (21) is installed inside the transmission assembly (2), a clamping cylinder body (22) is installed at the front end of the clamping cylinder body (21), a piston (24) is provided on the right side of the clamping cylinder body (22), a piston (24) is provided on the right side of the piston (24), an outer pull rod (25) is installed on the right side of the piston (24), an inner pull rod (26) is installed on the side of the outer pull rod (25), an inner slide block (28) is installed at the front end of the inner pull rod (26), and an outer slide block (27) is installed at the front end of the outer pull rod (25).

2. A rear-mounted pneumatic chuck with stable clamping according to claim 1, characterized in that: A first clamping claw (29) is installed at the front end of the outer slider (27), and a second clamping claw (210) is installed at the front end of the inner slider (28).

3. A rear-mounted pneumatic chuck with stable clamping according to claim 2, characterized in that: An auxiliary component (3) is installed on the side of the second clamping jaw (210), and the auxiliary component (3) includes: a connecting seat (31), a clamping end (32), a mounting base (33), and a clamping cavity (34). The connecting seat (31) is installed above the auxiliary component (3), the clamping end (32) is installed at the front end of the connecting seat (31), and the mounting base (33) is installed on the side of the clamping end (32).

4. A rear-mounted pneumatic chuck with stable clamping according to claim 3, characterized in that: A clamping cavity (34) is provided at the front end of the clamping end (32), a limit seat (35) is installed on the side of the clamping cavity (34), and a connecting column (18) is installed on the left side of the auxiliary component (3).

5. A rear-mounted pneumatic chuck with stable clamping according to claim 4, characterized in that: A mounting ring rail (17) is installed on the left side of the connecting column (18), and a pneumatic inner cavity (16) is installed on the left side of the mounting ring rail (17).

6. A rear-mounted pneumatic chuck with stable clamping according to claim 5, characterized in that: A mounting pad (15) is installed on the left side of the pneumatic inner cavity (16), and a mounting seat (12) is provided above the pneumatic inner cavity (16).

7. A rear-mounted pneumatic chuck with stable clamping according to claim 6, characterized in that: An upper mounting ring (11) is mounted above the mounting seat (12), a locking plate (14) is provided on the left side of the mounting seat (12), and a rear connecting end (13) is mounted on the left side of the mounting pad (15).

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