Expansion assembly for chuck

Abstract

The expansion assembly comprises a clamping jaw, a frame body, a rod body and a clamping plate are attached to the outer wall of the clamping jaw, the rod body is fixedly connected with the frame body, the clamping plate is connected with the frame body in a sliding mode, the outer wall of the rod body is connected with a first clamping block in a sliding mode, and one end of the first clamping block is fixedly connected with a sliding rod. The distance between the first clamping block and the clamping jaw and the distance between the second clamping block and the clamping jaw can be adjusted through clearance fit of the bolts at the first clamping block and the multiple sets of first hole bodies, the size of a fixable workpiece can be further increased conveniently, and meanwhile the size of the fixable workpiece can be further increased through clearance fit of the bolts at the second clamping block and the multiple sets of second hole bodies. The distance between the first clamping block and the second clamping block can be adjusted by adjusting the distance between the first clamping block and the second clamping block, so that when the first clamping block and the second clamping block clamp and fix a workpiece, the fixing range is changed to different degrees, the workpiece fixing stability can be improved to a certain degree, and the workpiece machining stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field related to chucks, and in particular to an expansion component for a chuck. Background Art

[0002] When the chuck is fixing the workpiece, the size of the workpiece that can be fixed is the maximum. When the size of the workpiece is larger than this limit and the chuck is still needed to fix the workpiece, the jaw extension assembly will be used to increase the range of the workpiece that can be fixed. There is currently a chuck with a jaw extension assembly (application number: 202223171938.9) on the machine tool to fix the chuck clamping range, and some workpieces that exceed the clamping range cannot be processed. Installing an extended rail on the jaws of the chuck, and then installing a clamping block for clamping the workpiece on the rail can break through the original clamping range of the chuck, can adapt to the clamping of large-diameter workpieces, and ensure smooth production on the basis of reducing the cost investment of production equipment; in addition, the rail is supported and guided by the support on the turntable to prevent the rail from being deformed or offset due to excessive length.

[0003] The above-mentioned problem exists that although the size of the workpiece fixed by the clamping block can be increased, the contact area between the clamping block and the workpiece is limited. When the size of the workpiece is large, the fixing range is small, and the problem of relatively unstable fixation may occur during workpiece processing. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an expansion component for a chuck.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A chuck expansion assembly comprises a claw, the outer wall of the claw is fitted with a frame, a rod and a clamp, the rod is fixedly connected to the frame, the clamp is slidably connected to the frame, the outer wall of the rod is slidably connected with a first clamp, one end of the first clamp is fixedly connected to a sliding rod, the outer wall of the sliding rod is slidably connected with a second clamp, the rod is processed with multiple groups of first holes, the sliding rod is processed with multiple groups of second holes, the first clamp and the second clamp are both threadedly connected with bolts, and the two groups of bolts are respectively clearance-matched with the corresponding first and second holes.

[0007] Preferably, a stud is threadedly connected to the frame, and one end of the stud is rotatably connected to the clamping plate.

[0008] Preferably, a second rubber pad is fixedly connected to both the clamping plate and the frame.

[0009] Preferably, a first rubber pad is fixedly connected to both the first clamping block and the second clamping block.

[0010] Preferably, the two groups of bolts are both fixedly connected with a first handle.

[0011] Preferably, one end of the rod body is designed as an arc.

[0012] Preferably, a second handle is fixedly connected to the stud.

[0013] The beneficial effects of the utility model are:

[0014] 1. Through the cooperation among the rod body, the first clamping block, the sliding rod, the second clamping block, the first hole body, the second hole body and the bolt, the distance between the first clamping block and the second clamping block and the claws can be adjusted by using the clearance cooperation between the bolts at the first clamping block and the clearance cooperation between the multiple groups of first holes, so as to facilitate further extension of the size of the fixable workpiece. At the same time, by using the bolts at the second clamping block and the clearance cooperation between the multiple groups of second holes, the spacing between the first clamping block and the second clamping block can be adjusted, so that when the first clamping block and the second clamping block clamp the workpiece, the fixing range can be changed to different degrees, which can improve the stability of the fixed workpiece to a certain extent and ensure the stability of the workpiece during processing;

[0015] 2. By cooperating among the frame, studs and clamps, the studs can be rotated at the frame, so that the studs can drive the clamps to move up and down in the frame. Then, by cooperating with the block and the clamps, the frame can be fixed on the claws, which makes it relatively convenient and easy to fix when in use or disassemble when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an expansion assembly for a chuck proposed by the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the middle frame, the first hole body and the stud;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of the first clamping block, the sliding rod and the second clamping block;

[0019] Figure 4 for Figure 2 A schematic diagram of the structure of the middle rod body, the first clamping block and the second clamping block;

[0020] Figure 5 for Figure 2 Schematic diagram of the structure of the middle frame, rod body and studs.

[0021] In the figure: 1, claw; 2, frame; 3, rod body; 4, clamp; 5, first clamp block; 6, slide rod; 7, second clamp block; 8, first hole body; 9, second hole body; 10, bolt; 11, stud; 12, first handle; 13, first rubber pad; 14, second handle; 15, second rubber pad. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Example 1, reference Figures 1 to 5 , a chuck expansion component, including a claw 1, the outer wall of the claw 1 is attached with a frame 2, a rod 3 and a clamping plate 4, the rod 3 is fixedly connected to the frame 2, the clamping plate 4 is slidably connected to the frame 2, the clamping plate 4 can be moved at the frame 2, the outer wall of the rod 3 is slidably connected with a first clamping block 5, the first clamping block 5 can be moved at the rod 3, and the distance between the first clamping block 5 and the claw 1 can be adjusted, one end of the first clamping block 5 is fixedly connected to a sliding rod 6, the outer wall of the sliding rod 6 is slidably connected with a second clamping block 7, the second clamping block 7 can be moved on the outer wall of the sliding rod 6, and then the distance between the second clamping block 7 and the first clamping block 5 can be adjusted, the rod 3 is processed There are multiple groups of first hole bodies 8, and multiple groups of second hole bodies 9 are processed on the sliding rod 6. The first clamping block 5 and the second clamping block 7 are both threadedly connected with bolts 10. The two groups of bolts 10 are respectively clearance-matched with the corresponding first hole bodies 8 and second hole bodies 9. By utilizing the clearance match between the bolts 10 at the first clamping block 5 and the multiple groups of first hole bodies 8, the distance between the first clamping block 5 and the claw 1 can be adjusted, which is convenient for fixing workpieces of larger sizes. By utilizing the clearance match between the bolts 10 at the second clamping block 7 and the multiple groups of second hole bodies 9, the distance between the first clamping block 5 and the second clamping block 7 can be adjusted, thereby increasing the fixing range of the first clamping block 5 and the second clamping block 7 to the workpiece.

[0024] In this embodiment, a stud 11 is threadedly connected to the frame 2, and one end of the stud 11 is rotatably connected to the clamp 4. When the stud 11 rotates at the frame 2, the clamp 4 can be driven to move at the frame 2, and the distance between the clamp 4 and one end of the inner wall of the frame 2 is adjusted, so that the claw 1 can be fixed in the frame 2, and the second rubber pad 15 is fixedly connected to the clamp 4 and the frame 2, and the first rubber pad 13 is fixedly connected to the first clamp block 5 and the second clamp block 7. The first handle 12 is fixedly connected to the two sets of bolts 10, and one end of the rod body 3 is designed as an arc, so that when the staff works around the component, the outward end of the stationary rod body 3 can be prevented from contacting the staff and causing damage, and the second handle 14 is fixedly connected to the stud 11.

[0025] The working principle of this embodiment is as follows: when in use, the frame body 2 and the rod body 3 are placed in close contact with the claw 1. After placement, the second handle 14 drives the stud 11 to rotate, so that the clamping plate 4 can be matched with the frame body 2 and clamped and fixed in the frame body 2. After fixation, the movement of multiple groups of claws 1 on the external chuck can drive the first clamping block 5 and the second clamping block 7 to move synchronously. Multiple groups of first clamping blocks 5 and second clamping blocks 7 can clamp and fix workpieces of larger sizes. At the same time, the clearance between the bolt 10 at the first clamping block 5 and the first hole body 8 can be used to adjust the distance between the first clamping block 5 and the claw 1, so as to expand the range of clamping the workpiece. The bolt 10 at the second clamping block 7 can also be clearance-matched with multiple groups of second hole bodies 9 to increase the fixing range of the first clamping block 5 and the second clamping block 7 to the workpiece, so as to ensure the fixation and processing stability of the workpiece.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chuck expansion assembly, comprising a chuck jaw (1), characterized in that: The outer wall of the clamping claw (1) is fitted with a frame body (2), a rod body (3) and a clamping plate (4); the rod body (3) is fixedly connected to the frame body (2); the clamping plate (4) is slidably connected to the frame body (2); the outer wall of the rod body (3) is slidably connected to a first clamping block (5); one end of the first clamping block (5) is fixedly connected to a sliding rod (6); the outer wall of the sliding rod (6) is slidably connected to a second clamping block (7); the rod body (3) is processed with a plurality of groups of first holes (8); the sliding rod (6) is processed with a plurality of groups of second holes (9); the first clamping block (5) and the second clamping block (7) are both threadedly connected with bolts (10); the two groups of bolts (10) are respectively clearance-matched with the corresponding first holes (8) and second holes (9).

2. A chuck expansion assembly according to claim 1, characterized in that: A stud (11) is threadedly connected to the frame (2), and one end of the stud (11) is rotatably connected to the clamping plate (4).

3. The expansion assembly for a chuck according to claim 1, characterized in that: A second rubber pad (15) is fixedly connected to both the clamping plate (4) and the frame (2).

4. The expansion assembly for a chuck according to claim 1, characterized in that: A first rubber pad (13) is fixedly connected to both the first clamping block (5) and the second clamping block (7).

5. The expansion assembly for a chuck according to claim 1, characterized in that: The two groups of bolts (10) are both fixedly connected with a first handle (12).

6. The expansion assembly for a chuck according to claim 1, characterized in that: One end of the rod body (3) is designed as an arc.

7. The expansion assembly for a chuck according to claim 2, characterized in that: A second handle (14) is fixedly connected to the stud (11).

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