Clamping device for machining of inner pipe of shock absorber

By designing multiple clamping groups and a cylinder-driven clamping device, the problem that existing fixtures can only clamp a single tube was solved, enabling the simultaneous processing of multiple inner tubes, improving efficiency and accuracy, and meeting the needs of mass production.

CN223889501UActive Publication Date: 2026-02-10JIANGSU CHANGBEICHEN MASCH CO LTD
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Patent Information

Application Number
CN202520545134.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-26
Publication Date
2026-02-10
Estimated Expiration
2035-03-26

AI Technical Summary

Technical Problem

Existing machining fixtures can only hold a single inner tube, which leads to frequent disassembly and assembly of workpieces during mass production, affecting processing efficiency.

Method used

A clamping device for machining inner tubes of shock absorbers was designed. It adopts a multi-clamping group structure, including a fixed clamping block, a movable clamping block and a driving component. It can clamp multiple inner tubes at the same time. The movable clamping block and the fixed clamping block are driven by a cylinder to form a clamping groove. Combined with the limit block and guide rod structure, the clamping is accurate and stable.

Benefits of technology

It enables the clamping of multiple inner tubes at a time, reducing the frequency of disassembly and assembly operations for operators, improving work efficiency, meeting the needs of batch processing, and ensuring processing accuracy and easy cleaning of iron chips through the design of chip removal holes and wavy notches.

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Abstract

The utility model discloses a shock absorber inner pipe machining clamping device which comprises a bottom plate, a clamping set is connected to the bottom plate, and the clamping set comprises a fixed clamping block, a movable clamping block and a driving piece. The fixed clamping block is connected to the bottom plate, and grooves A are formed in the two ends of the fixed clamping block; the driving part is connected to the bottom plate, the movable clamping block is connected to the power output end of the driving part, a groove B is formed in the end, close to the fixed clamping block, of the movable clamping block, and when the driving part drives the movable clamping block to make contact with the fixed clamping base, the groove A and the groove B define a clamping groove; the bottom end of the fixed clamping block is connected with a supporting block A, and the two ends of the supporting block A extend into the two grooves A; the bottom end of the movable clamping block is connected with a supporting block B, and the supporting block B extends into the groove B. Compared with the prior art, a plurality of inner pipes can be clamped at a time, operators do not need to frequently disassemble, assemble and replace the inner pipes, working efficiency is greatly improved, and the requirement for batch machining is met.
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Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a clamping device for machining the inner tube of a shock absorber. Background Technology

[0002] The automotive shock absorption system is an important component of automobiles. It effectively reduces vibrations during vehicle operation and improves driving comfort. It has been widely used in various types of automotive structures.

[0003] like Figure 1 As shown, this part is the inner tube of the car's shock absorption system. It is cylindrical in shape and has symmetrical protrusions on its outer surface. The inner tube is installed at the upper and lower ends of the car's shock absorption system and is used to connect the axle and the frame, respectively.

[0004] When machining inner holes on CNC machine tools, existing machining fixtures can only hold a single workpiece, requiring operators to frequently disassemble and reassemble the workpiece. This is especially problematic during mass production, where traditional fixtures significantly impact machining efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping device for machining inner tubes of shock absorbers, which can clamp multiple inner tubes at a time, eliminating the need for frequent disassembly and replacement by operators, greatly improving work efficiency, meeting the needs of batch processing, and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A clamping device for machining the inner tube of a shock absorber includes a base plate, on which at least one clamping assembly is connected. The clamping assembly includes a fixed clamping block, a movable clamping block, and a driving component. The fixed clamping block is connected to the base plate, and both ends of the fixed clamping block are provided with grooves A. The driving component is connected to the base plate, and the movable clamping block is connected to the power output end of the driving component. The end of the movable clamping block near the fixed clamping block is provided with a groove B. When the driving component drives the movable clamping block to contact the fixed clamping block, grooves A and B close together to form a clamping groove. The bottom end of the fixed clamping block is connected to a support block A, and both ends of the support block A extend into the two grooves A. The bottom end of the movable clamping block is connected to a support block B, and the support block B extends into the groove B.

[0008] A further improvement of this utility model is that the upper surface of the base plate is provided with a groove, a support block is connected to the base plate and the support block is engaged in the groove, and an installation block is connected to the lower surface of the base plate.

[0009] A further improvement of this utility model is that the driving component is a cylinder, the cylinder is connected to the inner side of the support block, and the movable clamping block is connected to the power output end of the cylinder.

[0010] A further improvement of this utility model is that a guide rod is connected to the fixed clamping block, the guide rod protrudes from the fixed clamping block, and a guide hole is provided on the movable clamping block, the movable clamping block slides and engages with the guide rod through the guide hole.

[0011] A further improvement of this utility model is that the fixing block is provided with two through holes symmetrically, and two guide rods are accommodated in the through holes. The guide rods are provided with annular grooves. The top of the fixing block is provided with a threaded hole, and a locking screw is threaded into the threaded hole and engaged in the groove.

[0012] A further improvement of this utility model is that a limiting block and a limiting groove are respectively provided on the contact surfaces of the fixed clamping block and the movable clamping block, and the limiting block can be inserted into the limiting groove.

[0013] A further improvement of this utility model is that a limiting screw is connected to the support block, and one end of the limiting screw can contact the movable clamping block.

[0014] A further improvement of this utility model is that a chip removal hole is provided on the bottom plate at the bottom of the clamping groove.

[0015] A further improvement of this utility model is that the clamping groups are multiple groups arranged in parallel.

[0016] A further improvement of this utility model is that the portion of support block A located in groove A and the portion of support block B located in groove B are both arc-shaped and have wavy notches.

[0017] The beneficial effects of this utility model are:

[0018] This utility model relates to a clamping device for machining inner tubes of shock absorbers, which can clamp multiple inner tubes at a time, eliminating the need for frequent disassembly and replacement by operators, greatly improving work efficiency and meeting the needs of batch processing.

[0019] The shock absorber inner tube machining clamping device of this utility model has a support block that is snapped into a groove, ensuring that the support block is more stable and reliable.

[0020] The shock absorber inner tube machining clamping device of this utility model has a movable clamping block that slides and engages with the guide rod through a guide hole, ensuring that the position of the movable clamping block is more accurate.

[0021] The shock absorber inner tube machining clamping device of this utility model has a limiting block and a limiting groove respectively provided on the contact surface of the fixed clamping block and the movable clamping block. The limiting block can be inserted into the limiting groove to ensure that the position of the movable clamping block is more accurate.

[0022] The shock absorber inner tube machining clamping device of this utility model has a limit screw connected to the support block to prevent the movable clamping block from retracting excessively.

[0023] The present invention relates to a clamping device for machining the inner tube of a shock absorber. The bottom plate at the bottom of the clamping groove is provided with a chip discharge hole to facilitate the discharge of machining chips.

[0024] The shock absorber inner tube machining clamping device of this utility model has notches on support blocks A and B that can reduce their area in grooves A and B, thereby avoiding a large amount of iron filings remaining on the upper surfaces of support blocks A and B. The bottom end of the inner tube can be tightly attached to the upper surfaces of support blocks A and B to ensure the machining accuracy of the inner tube. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the inner tube.

[0026] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 3 This is a schematic diagram of the clamping assembly structure of this utility model.

[0028] Figure 4 This is a schematic diagram of the clamping assembly structure of this utility model.

[0029] Figure 5 This is a schematic diagram of the fixing clamp structure of this utility model.

[0030] Figure 6 This is a schematic diagram of the guide rod structure of this utility model.

[0031] Figure 7 This is a schematic diagram of the base plate structure of this utility model.

[0032] In the diagram: 1-base plate, 101-groove, 102-chip removal hole, 2-fixed clamping block, 201-groove A, 202-locking screw, 203-limiting block, 3-movable clamping block, 301-groove B, 303-limiting groove, 4-support block A, 5-support block B, 6-support block, 7-mounting block, 8-guide rod, 801-slot, 9-limiting screw, 10-inner tube, 11-cylinder, 12-notch. Detailed Implementation

[0033] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1: As Figures 1-7As shown, a clamping device for machining the inner tube of a shock absorber includes a base plate 1. At least one clamping assembly is connected to the base plate 1. The clamping assembly includes a fixed clamping block 2, a movable clamping block 3, and a driving component. The fixed clamping block 2 is connected to the base plate 1, and both ends of the fixed clamping block 2 are provided with grooves A201. The driving component is connected to the base plate 1, and the movable clamping block 3 is connected to the power output end of the driving component. One end of the movable clamping block 3 near the fixed clamping block 2 is provided with a groove B301. When the driving component drives the movable clamping block 3 to contact the fixed clamping seat, the grooves A201 and B301 close together to form a clamping groove. The bottom end of the fixed clamping block 2 is connected to a support block A4 by screws, and both ends of the support block A4 extend into the two grooves A201. The bottom end of the movable clamping block 3 is connected to a support block B5 by screws, and the support block B5 extends into the groove B301.

[0035] The upper surface of the base plate 1 is provided with a groove 101, and a support block 6 is connected to the base plate 1 by screws, and the support block 6 is snapped into the groove 101. The lower surface of the base plate 1 is connected with an installation block 7.

[0036] The driving component is a cylinder 11, which is connected to the inside of the support block 6 by screws. The movable clamping block 3 is connected to one end of the piston rod of the cylinder 11 by screws.

[0037] A guide rod 8 is connected to the fixed clamping block 2, and the guide rod 8 protrudes from the fixed clamping block 2. The movable clamping block 3 is provided with a guide hole, and the movable clamping block 3 slides and engages with the guide rod 8 through the guide hole.

[0038] The fixed clamping block 2 is provided with two through holes symmetrically, and two guide rods 8 are housed in the through holes. The guide rods 8 are provided with annular grooves 801. The top of the fixed clamping block 2 is provided with a threaded hole, and a locking screw 202 is threaded in the threaded hole. The locking screw 202 is engaged in the groove 801.

[0039] The contact surfaces of the fixed clamping block 2 and the movable clamping block 3 are respectively provided with a limiting block 203 and a limiting groove 303, and the limiting block 203 can be inserted into the limiting groove 303.

[0040] A limiting screw 9 is connected to the support block 6, and one end of the limiting screw 9 can contact the movable clamping block 3.

[0041] The bottom plate 1 at the bottom of the clamping groove is provided with chip removal holes 102.

[0042] The clamping groups consist of eight groups arranged in parallel.

[0043] Example 2: This example is a further improvement on Example 1. The main improvement is that, in Example 1, a large amount of iron filings would remain on the upper surfaces of support blocks A4 and B5 during use, making cleaning with an air gun inconvenient; however, in this example, the above-mentioned defects can be avoided. Specifically:

[0044] The portion of support block A4 located in groove A201 and the portion of support block B5 located in groove B301 are both arc-shaped and have wavy notches 12. In this embodiment, the notches 12 on support block A4 and support block B5 can reduce their area in groove A201 and groove B301, thereby preventing a large amount of iron filings from remaining on the upper surface of support block A4 and support block B5. The bottom end of the inner tube 10 can be tightly attached to the upper surface of support block A4 and support block B5 to ensure the machining accuracy of the inner tube 10.

[0045] Apart from the above, this embodiment is exactly the same as Embodiment 1, and will not be described again here.

[0046] The specific working principle of this utility model is as follows:

[0047] Before operation, the operator fixes the mounting block 7 of the base plate 1 to the worktable of the CNC machine tool using T-bolts. During operation, the operator places the inner tube 10 into the clamping slots of each clamping group in sequence, with the bottom end of the inner tube 10 contacting the support block A4 and support block B5; the cylinder 11 extends, the movable clamping block 3 approaches the fixed clamping block 2, and clamps the inner tube 10 with the fixed clamping block 2 for machining operations. After the operation is completed, the cylinder 11 retracts, the operator can remove the inner tube 10, and blow away the iron filings on the support block A4 and support block B5 with an air gun, and then install the next set of inner tubes 10.

[0048] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A clamping device for machining the inner tube of a shock absorber, characterized in that: The device includes a base plate (1), on which at least one clamping assembly is connected. The clamping assembly includes a fixed clamping block (2), a movable clamping block (3), and a driving component. The fixed clamping block (2) is connected to the base plate (1), and the two ends of the fixed clamping block (2) are provided with grooves A (201). The driving component is connected to the base plate (1), and the movable clamping block (3) is connected to the power output end of the driving component. The movable clamping block (3) is provided with a groove B (301) at one end close to the fixed clamping block (2). When the driving component drives the movable clamping block (3) to contact the fixed clamping seat, the grooves A (201) and B (301) surround each other to form a clamping groove. The bottom end of the fixed clamping block (2) is connected to a support block A (4), and the two ends of the support block A (4) extend into the two grooves A (201). The bottom end of the movable clamping block (3) is connected to a support block B (5), and the support block B (5) extends into the groove B (301).

2. The shock absorber inner tube machining clamping device as described in claim 1, characterized in that: The upper surface of the base plate (1) is provided with a groove (101), a support block (6) is connected to the base plate (1), and the support block (6) is engaged in the groove (101). The lower surface of the base plate (1) is connected with an installation block (7).

3. The shock absorber inner tube machining clamping device as described in claim 2, characterized in that: The driving component is a cylinder (11), which is connected to the inside of the support block (6), and the movable clamping block (3) is connected to the power output end of the cylinder (11).

4. The shock absorber inner tube machining clamping device as described in claim 1, characterized in that: The fixed clamping block (2) is connected to a guide rod (8), which protrudes from the fixed clamping block (2). The movable clamping block (3) is provided with a guide hole, and the movable clamping block (3) slides and engages with the guide rod (8) through the guide hole.

5. A clamping device for machining the inner tube of a shock absorber as described in claim 1 or 4, characterized in that: The fixed clamp (2) is provided with two through holes symmetrically, and two guide rods (8) are housed in the through holes. The guide rods (8) are provided with an annular groove (801). The top of the fixed clamp (2) is provided with a threaded hole, and a locking screw (202) is threaded in the threaded hole. The locking screw (202) is engaged in the groove (801).

6. A clamping device for machining the inner tube of a shock absorber as described in claim 1 or 4, characterized in that: The contact surfaces of the fixed clamping block (2) and the movable clamping block (3) are respectively provided with a limiting block (203) and a limiting groove (303), and the limiting block (203) can be inserted into the limiting groove (303).

7. A clamping device for machining the inner tube of a shock absorber as described in claim 2 or 3, characterized in that: The support block (6) is connected to a limiting screw (9), one end of which can contact the movable clamping block (3).

8. The shock absorber inner tube machining clamping device as described in claim 1, characterized in that: The bottom plate (1) at the bottom of the groove is provided with a chip removal hole (102).

9. The shock absorber inner tube machining clamping device as described in claim 1, characterized in that: The clamping groups are multiple groups arranged in parallel.

10. The shock absorber inner tube machining clamping device as described in claim 1, characterized in that: The portion of the support block A (4) located in the groove A (201) and the portion of the support block B (5) located in the groove B (301) are both arc-shaped and have wavy notches (12).