Novel pneumatic double-acting chuck

Abstract

The utility model discloses a novel pneumatic double-acting chuck, which particularly relates to the field of precision machining, and comprises a chuck body, the front end and the rear end of the chuck body are respectively connected with a front cover and a rear cover, the rear cover is provided with an air inlet A and an air inlet B which are symmetrically arranged, and air cylinder bodies are arranged in the chuck body close to the inner sides of the air inlet A and the air inlet B; the output ends of the two air cylinder bodies are both connected with a piston A and a piston B. The piston B is arranged on one side of the piston A. The two pull rods and the corresponding power wedge blocks are connected through the pistons to move, original vertical movement is converted into transverse movement, the stress area is enlarged, the pull rods with the two pistons and the corresponding power wedge blocks form double-acting four claws, pairwise clamping and loosening are achieved, and due to the fact that the pull rods are of a cylinder structure, the occupied space is small, machining is easy, and machining cost is low. Large hollowness and large clamping force are achieved, plate type air inlet and pipe type air inlet can be achieved in a chuck air inlet mode, and the requirements of different machine tool working condition industries can be met.

Description

Technical Field

[0001] This utility model relates to the field of precision machining, and more specifically, to a novel pneumatic double-acting chuck. Background Technology

[0002] A chuck is a clamping device based on machine tool processing technology. It is used to hold the workpiece when machining shaft or tube parts. A chuck generally uses two sets of jaws arranged opposite each other to achieve vertical and horizontal clamping. It plays an important role in modern industrial production, especially in the field of precision machining.

[0003] With the development of Industry 5.0, various irregularly shaped parts need to be processed. Conventional three-jaw self-centering chucks cannot meet the processing requirements. Therefore, in order to meet the processing needs of customers in industries such as lathes, machining centers, laser cutting, and non-standard automation, this application designs a pneumatic double-acting chuck. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a novel pneumatic double-acting chuck.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel pneumatic double-acting chuck, comprising a chuck body, with a front cover and a rear cover connected to the front and rear ends of the chuck body, respectively. The rear cover has symmetrically arranged air inlets A and B. Cylinder bodies are installed inside the chuck body near the inner sides of air inlets A and B. Pistons A and B are connected to the output ends of both cylinder bodies. Piston B is located on one side of piston A. Two short pull rods are connected to piston A, and power wedges are connected to the ends of the two short pull rods. One end of each power wedge is located on the outer side of the front cover and is connected to a chuck claw. Two long pull rods are connected to piston B, and power wedges are also connected to the ends of the two long pull rods. One end of each power wedge is located on the outer side of the front cover and is connected to a chuck claw.

[0006] As a further improvement to the technical solution of this utility model, the outer wall of the front cover is provided with holes for the gripper to hold the movement.

[0007] As a further improvement to the technical solution of this utility model, the rear cover and the front cover are both fixedly connected to the two ends of the chuck body by screws.

[0008] As a further improvement to the technical solution of this utility model, a circular through hole is provided in the middle of the chuck body for the part to be clamped to extend into.

[0009] As a further improvement to the technical solution of this utility model, both the long tie rod and the short tie rod are cylindrical structures.

[0010] As a further improvement to the technical solution of this utility model, the cylinder body is fixedly installed inside the chuck body by screws, and the inside of the chuck body is provided with a groove for the extension and retraction of piston A and piston B.

[0011] The beneficial effects of this utility model are:

[0012] This invention uses a piston to connect two pull rods and corresponding power wedges, changing the original vertical motion to a lateral motion and expanding the force-bearing area. The pull rods with two pistons and the corresponding power wedges form a double-acting four-jaw chuck, realizing clamping and releasing in pairs. Since the pull rods are cylindrical, they occupy little space, are easy to process, and achieve large hollowness and large clamping force. The chuck can be equipped with plate-type or pipe-type air intake, which can meet the needs of different machine tool working conditions in various industries. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0015] Figure 3 This is a central sectional view of the present invention.

[0016] Figure 4 A cross-sectional view of this utility model Figure 1 .

[0017] Figure 5 A cross-sectional view of this utility model Figure 2 .

[0018] Figure 6 The two sides of the AA section of this utility model are used to represent respectively Figure 4 and Figure 5 A schematic diagram of the two parts.

[0019] The attached diagram is labeled as follows: 1. Chuck body; 2. Rear cover; 3. Air inlet A; 4. Air inlet B; 5. Chuck claw; 6. Cylinder body; 7. Piston A; 8. Piston B; 9. Power wedge; 10. Long tie rod; 11. Short tie rod; 12. Front cover. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] As attached Figure 1-6 The pneumatic novel double-acting chuck shown includes a chuck body 1. The front and rear ends of the chuck body 1 are respectively connected to a front cover 12 and a rear cover 2. The rear cover 2 is provided with symmetrically arranged air inlets A 3 and B 4. Inside the chuck body 1, near the inner side of air inlets A 3 and B 4, cylinder bodies 6 are installed. The output ends of the two cylinder bodies 6 are connected to pistons A7 and B8. Piston B8 is located on one side of piston A7. Two short tie rods 11 are connected to piston A7. The ends of the two short tie rods 11 are connected to power wedges 9. One end of the two power wedges 9 is located on the outer side of the front cover 12 and is connected to a chuck 5. Two long tie rods 10 are connected to piston B8. The ends of the two long tie rods 10 are also connected to power wedges 9. One end of the two power wedges 9 is located on the outer side of the front cover 12 and is connected to a chuck 5.

[0022] The outer wall of the front cover 12 has holes for the gripper 5 to clamp and move, so that the gripper 5 can keep moving to achieve the clamping and releasing action of the part.

[0023] As attached Figure 1 As shown, the rear cover 2 and the front cover 12 are fixedly connected to both ends of the chuck body 1 by screws, which facilitates the connection and disassembly of the rear cover 2 and the front cover 12 to the chuck body 1.

[0024] As attached Figure 1-2 As shown, the chuck body 1 has a circular through hole in the middle for inserting the part to be clamped, so that the part can be placed inside the circular through hole, thereby using the jaws to clamp and loosen it.

[0025] Both the long tie rod 10 and the short tie rod 11 are cylindrical structures.

[0026] As attached Figure 3 As shown, the cylinder body 6 is fixedly installed inside the chuck body 1 by screws. The inside of the chuck body 1 is provided with a groove for the extension and retraction of the piston A7 and the piston B8, which facilitates the installation and fixing of the cylinder body 6.

[0027] Working principle: This utility model designs a novel pneumatic double-acting chuck, the specific structure of which is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, the chuck enters the cylinder body 6 with compressed air through the air inlet 3 (A) of the rear cover 2, causing pistons A7 and B8 to move simultaneously. Two short pull rods 11 are connected to piston A7, and these short pull rods 11 are connected to two power wedges 9. The power wedges 9 are connected to jaws 5. As piston A7 moves, the jaws 5 also move, achieving clamping. Two long pull rods 10 are connected to piston B8. Piston B8 moves on the same principle as piston A7. The long pull rods 10 are connected to two power wedges 9, and these power wedges 9 are connected to jaws 5, achieving clamping of the other two jaws 5. Since the two pistons move independently, they do not interfere with each other. The two pairs of jaws clamp independently, ensuring stable and reliable clamping of irregularly shaped parts. Air is compressed into the cylinder body 6 through the B air inlet 4 of the chuck rear cover 2, which releases the jaws. In other words, this application uses pistons to connect two rods and corresponding power wedges 9 to move, changing the original vertical movement to a lateral movement and expanding the force-bearing area. The rods with two pistons and the corresponding power wedges 9 form a double-acting four-jaw system, enabling clamping and releasing in pairs. Since the rods are cylindrical, they occupy little space, are easy to process, and achieve large hollowness and large clamping force. The chuck can be equipped with plate-type or pipe-type air intake, which can meet the needs of different machine tool operating conditions in various industries.

[0028] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic novel dual motion chuck characterized in that: The utility model relates to a chuck body (1), the front and rear ends of chuck body (1) are connected with front cover (12) and rear cover (2) respectively, the rear cover (2) is provided with symmetrically arranged A air inlet (3) and B air inlet (4), the inside of chuck body (1) is close to the inside position of A air inlet (3) and B air inlet (4) and is installed with cylinder block (6), the output of two cylinder blocks (6) is connected with piston A (7) and piston B (8), piston B (8) is arranged on the side of piston A (7), piston A (7) is connected with two short pull rods (11), and the end of two short pull rods (11) is connected with power wedge (9), and the one end of two power wedges (9) is connected with claw (5) on the outside of front cover (12), two long pull rods (10) are connected on piston B (8), and the end of two long pull rods (10) is also connected with power wedge (9), and the one end of two power wedges (9) is connected with claw (5) on the outside of front cover (12).

2. The pneumatic novel dual moving chuck as claimed in claim 1, wherein: The outer wall of the front cover (12) is provided with a hole for the clamping movement of the claw (5).

3. The pneumatic novel dual moving chuck as claimed in claim 1, wherein: The rear cover (2) and the front cover (12) are fixedly connected with the chuck body (1) by screws.

4. The pneumatic novel dual moving chuck as claimed in claim 1, wherein: The middle part of the chuck body (1) is provided with a circular through hole for the insertion of the clamped parts.

5. The pneumatic novel dual moving chuck as claimed in claim 1, wherein: The long pull rod (10) and the short pull rod (11) are both cylindrical structures.

6. The pneumatic novel dual moving chuck as claimed in claim 1, wherein: The cylinder block (6) is fixedly installed in the chuck body (1) by screws, and the inside of the chuck body (1) is provided with a groove for the telescopic movement of the piston A (7) and the piston B (8).

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