Workpiece scratch prevention clamping assembly

Abstract

The utility model relates to clamping frock technical field especially, relates to a kind of clamping assembly of preventing workpiece scratch.A kind of clamping assembly of preventing workpiece scratch is provided, which is convenient to switch clamping mode and has flexible self-adaptive clamping function.The utility model discloses a two-way electric slide rail, two sliding blocks are symmetrically distributed on the screw rod of the two-way electric slide rail, two the sliding block lower side is fixedly connected with connecting shaft, the shaft hole is passed through and is set on the connecting shaft, the clamping arm of the clamping face that can be rotated adjustment is fixedly connected in the shaft hole by bolt, the one side of the clamping arm is provided with the self-adaptive clamp for clamping different shape workpiece.When clamping round tubular workpiece, workpiece surface scratch is effectively avoided by two circular arc surface cooperation protective sleeve;When clamping irregular workpiece, through air bag inflation drive top plate, top pipe and chuck synchronous outer migration, chuck can self-adapted back after contacting workpiece, cooperate spring buffer and flexible fit, realize the stable clamping of special-shaped surface, no rigid impact throughout.

Description

Technical Field

[0001] This utility model relates to the field of clamping tooling technology, and in particular to a clamping component that prevents workpiece scratches. Background Technology

[0002] In machining, assembly, and testing processes, existing general-purpose clamping arms mostly adopt fixed planar or single arc-shaped jaw structures, which are usually only suitable for workpieces of specific shapes and cannot simultaneously meet the clamping needs of round tubes and irregular workpieces. When it is necessary to change the clamping object, it is often necessary to replace the entire set of clamps or use auxiliary pads, which is cumbersome and inefficient.

[0003] In addition, traditional clamping arms are mostly rigid contacts and lack adaptive adjustment capabilities. When clamping workpieces with irregular surfaces or soft materials, they are prone to deformation, scratches or even damage due to local stress concentration. Although some clamps are equipped with rubber pads for cushioning, they cannot be compatible at the same time to achieve dynamic adaptive fitting, resulting in insufficient clamping stability.

[0004] Therefore, there is an urgent need for a clamping component that is easy to switch clamping modes and has flexible adaptive clamping function to prevent workpiece scratches. Utility Model Content

[0005] In order to overcome the shortcomings of existing workpiece clamping and fixing fixtures in actual use, this utility model provides a clamping component that is easy to switch clamping modes and has flexible adaptive clamping function to prevent workpiece scratches.

[0006] The technical solution is as follows: a clamping assembly for preventing workpiece scratches includes a bidirectional electric slide rail, two sliders symmetrically distributed on the lead screw of the bidirectional electric slide rail, a connecting shaft fixedly connected to the lower side of the two sliders, a shaft hole through the connecting shaft, a clamping arm that can rotate and adjust the clamping surface is fixedly connected in the shaft hole by bolts, and an adaptive clamping component for clamping workpieces of different shapes is provided on one side of the clamping arm. The adaptive clamping component includes a cavity opened in the clamping arm, an airbag that can be telescopically adjusted inside the cavity, a top plate connected to one side of the airbag, and several top tubes arranged in an array on the top plate. Each top tube is detachably connected to the outer end of the top tube, and the top tubes and clamps are movably inserted through the inner wall of the cavity.

[0007] Furthermore, the adaptive clamp also includes a connecting pipe, one side of which is connected to a connecting pipe extending outward to the clamp arm for connecting an external air pump. A one-way valve is connected to the connecting pipe, and springs corresponding to the number of top tubes are abutted between the inner wall of the cavity and the top plate, with each spring being sleeved on the top tube.

[0008] Furthermore, the inner wall of the jacking pipe is provided with grooves distributed circumferentially, and the inner end of the groove is provided with a connected annular groove. The outer wall of one side of the clamp is provided with a locking strip corresponding to the groove along the circumferential direction, and the end of the locking strip is provided with a protrusion adapted to engage with the annular groove.

[0009] Furthermore, one side of the clamping arm has an arc-shaped structure, while the other side has a planar structure.

[0010] Furthermore, a protective sleeve is provided on one side of the arc-shaped structure of the clamping arm, and anti-slip grooves are provided at intervals along the circumference on the inner side of the protective sleeve.

[0011] Furthermore, a sealing cap is detachably snapped onto the outer side of the cavity on the clamping arm.

[0012] The beneficial effects are as follows: The clamping arm structure, which can rotate 180 degrees and lock, allows for rapid switching between arc-shaped and flat clamping states. Only bolts need to be removed and installed to flexibly adapt to cylindrical or irregularly shaped workpieces, making operation simple and efficient. When clamping cylindrical workpieces, the double arc surfaces combined with the protective sleeve effectively prevent scratches on the workpiece surface. When clamping irregular workpieces, the airbag inflation drives the top plate, top tube, and chuck to move outward synchronously. After contacting the workpiece, the chuck can adaptively retract, and with spring buffering and flexible contact, it achieves stable clamping of irregular surfaces without rigid impact throughout the process. Simultaneously, the chuck adopts a detachable design, facilitating replacement to match different workpiece contours. While ensuring clamping reliability, it comprehensively avoids indentations or damage to the workpiece due to stress concentration, significantly improving clamping safety and applicability. Attached Figure Description

[0013] Figure 1 This is a diagram showing the clamping state of the clamping arm of this utility model.

[0014] Figure 2 This is a diagram showing another clamping state of the clamping arm of this utility model.

[0015] Figure 3 This is a cross-sectional view of the clamping arm and bidirectional electric slide rail of this utility model.

[0016] Figure 4 This is a cross-sectional view of the clamping arm of this utility model.

[0017] Figure 5 This is a structural separation diagram of the jacking pipe and the clamp of this utility model.

[0018] Parts and their numbers in the diagram: 1_Bidirectional electric slide rail, 2_Slider, 3_Connecting shaft, 30_Shaft hole, 31_Bolt, 4_Clamping arm, 40_Cavity, 41_Sealing cover, 5_Protective sleeve, 50_Anti-slip groove, 6_Airbag, 60_Connecting pipe, 61_One-way valve, 7_Top plate, 8_Top pipe, 80_Slot, 81_Annular groove, 9_Clamp, 90_Clamping strip, 91_Protrusion, 10_Spring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] Example: This utility model provides a clamping assembly to prevent workpiece scratches, see below. Figures 1 to 5 The system includes a bidirectional electric slide rail 1, sliders 2, a connecting shaft 3, bolts 31, clamping arms 4, and adaptive clamping components. Two sliders 2 are symmetrically distributed on the lead screw of the bidirectional electric slide rail 1, and the two sliders 2 are horizontally slidably connected to the bidirectional electric slide rail 1. A connecting shaft 3 is fixedly connected to the lower side of the two sliders 2. A shaft hole 30 is formed through the connecting shaft 3, and a clamping arm 4, capable of rotating and adjusting the clamping surface, is fixedly connected to the shaft hole 30 by bolts 31. By controlling the forward and reverse rotation of the lead screw of the bidirectional electric slide rail 1, the two sliders 2 can be driven to simultaneously open or close the connecting shaft 3 and the clamping arm 4, allowing for convenient and flexible clamping of workpieces of different shapes. The clamping arm 4 is equipped with an adaptive clamping component on one side for clamping workpieces of different shapes. The adaptive clamping component includes an air bladder 6, a top plate 7, a top tube 8, and a chuck 9. A cavity 40 is opened inside the clamping arm 4, and an adjustable air bladder 6 is installed inside the cavity 40. A top plate 7 is installed on one side of the air bladder 6. The top plate 7 is a thin metal plate that can deform arbitrarily with the extension and retraction of the top tube. Several top tubes 8 are arranged in an array on the top plate 7. Each top tube 8 is detachably connected to a chuck 9 at its outer end. Both the top tube 8 and the chuck 9 are movable through the inner wall of the cavity 40. The chuck 9 is made of flexible rubber material, which can form a flexible and stable clamping force on the workpiece.

[0021] It should be further explained that the adaptive clamp also includes a connecting pipe 60, a one-way valve 61, and a spring 10. One side of the airbag 6 is connected to a connecting pipe 60 extending to the outside of the clamping arm 4 for connecting an external air pump. A one-way valve 61 is connected to the connecting pipe 60 for maintaining pressure or venting the airbag 6. A spring 10 corresponding to the number of top tubes 8 is abutted between the inner wall of the cavity 40 and the top plate 7. The springs 10 are respectively sleeved on the top tubes 8. The springs 10 can provide buffer protection and automatic retraction reset for the top tubes 8 and the clamp 9.

[0022] It should be further explained that the inner wall of the jacking pipe 8 has axially extending slots 80 distributed around its circumference, and the inner end of the slots 80 is provided with a connected annular groove 81. The outer wall of one side of the clamp 9 has a retaining strip 90 corresponding to the slots 80 distributed around its circumference. The end of the retaining strip 90 is provided with a protrusion 91 that is adapted to engage with the annular groove 81. Through the detachable connection structure, it is convenient to replace the flexible clamp 9 separately, which facilitates low-cost maintenance in the later stage without replacing the whole unit.

[0023] It should be further explained that one side of the clamping arm 4 is an arc-shaped structure, and the other side is a flat structure, which facilitates flexible switching between different usage states and is used to conveniently and stably clamp and limit workpieces of different shapes. The arc-shaped structure of the clamping arm 4 is provided with a protective sleeve 5, and the inner side of the protective sleeve 5 is provided with anti-slip grooves 50 at intervals along the circumference, which can increase the clamping force on the cylindrical workpiece, not only to avoid injury from clamping, but also to maintain a stable clamping.

[0024] In addition, the sealing cover 41 is detachably snapped onto the outside of the cavity 40 on the clamping arm 4, which facilitates the routine inspection and maintenance of the airbag 6 inside the cavity 40, making it more convenient to use.

[0025] When clamping a cylindrical workpiece, simply remove bolts 31 and rotate clamping arms 4 180 degrees to adjust them to the opposite position of the two arc-shaped structures. Then, re-lock bolts 31 to the connecting shaft 3. This allows for flexible switching of the clamping arms 4's usage state. The two protective sleeves 5 effectively prevent scratches or pinching of the workpiece during clamping. Conversely, when clamping irregular workpieces, simply repeat the above steps to easily adjust the two clamping arms 4 to the opposite position of the two planar structures. Controlling the bidirectional electric slide rail 1 allows the two clamping arms to... 4. When they come together and approach each other, air is inflated into the airbag 6 so that the airbag 6 can expand and push the top plate 7, the top tube 8 and the chuck 9 to move outward synchronously. When the chuck 9 contacts the surface of the irregular workpiece, the chuck 9 and the top tube retract adaptively, and the top plate 7 and the spring 10 deform until they fit tightly with the airbag 6. In this way, the irregularly shaped workpiece can be clamped and fixed securely. Moreover, the chuck 9, which can be disassembled and replaced separately, can not only achieve the purpose of quick and stable clamping of irregular workpieces, but also effectively prevent injury to irregular workpieces.

[0026] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation in order to cover all variations and equivalent structures and functions.

Claims

1. A clamping assembly for preventing workpiece scratches, comprising a bidirectional electric slide rail (1), wherein two sliders (2) are symmetrically distributed on the lead screw of the bidirectional electric slide rail (1), and a connecting shaft (3) is fixedly connected to the lower side of the two sliders (2), wherein a shaft hole (30) is provided through the connecting shaft (3), and a clamping arm (4) capable of rotating and adjusting the clamping surface is fixedly connected in the shaft hole (30) by bolts (31), characterized in that, It also includes an adaptive clamping component for clamping workpieces of different shapes on one side of the clamping arm (4). The adaptive clamping component includes a cavity (40) opened in the clamping arm (4), an airbag (6) that can be telescopically adjusted inside the cavity (40), a top plate (7) connected to one side of the airbag (6), a number of top tubes (8) arranged in an array on the top plate (7), and a clamp (9) detachably connected to the outer end of each top tube (8). The top tubes (8) and the clamps (9) are both movable through the inner wall of the cavity (40).

2. The clamping assembly for preventing workpiece scratches according to claim 1, characterized in that, The adaptive clamp also includes a connecting pipe (60), one side of the airbag (6) is connected to a connecting pipe (60) extending to the outside of the clamping arm (4) for connecting an external air pump, a one-way valve (61) is connected to the connecting pipe (60), and a spring (10) corresponding to the number of top tubes (8) is abutted between the inner wall of the cavity (40) and the top plate (7), and the springs (10) are respectively sleeved on the top tubes (8).

3. The clamping assembly for preventing workpiece scratches according to claim 1, characterized in that, The inner wall of the jacking pipe (8) is circumferentially distributed with slots (80), and the inner end of the slots (80) is provided with a connected annular groove (81). The outer wall of one side of the clamp (9) is circumferentially distributed with a locking strip (90) corresponding to the slots (80), and the end of the locking strip (90) is provided with a protrusion (91) that is adapted to engage with the annular groove (81).

4. The clamping assembly for preventing workpiece scratches according to claim 1, characterized in that, The clamp arm (4) has an arc-shaped structure on one side and a planar structure on the other side.

5. A clamping assembly for preventing workpiece scratches according to claim 4, characterized in that, The clamp arm (4) has a protective sleeve (5) on one side of its arc-shaped structure, and the inner side of the protective sleeve (5) is provided with anti-slip grooves (50) at intervals along the circumference.

6. A clamping assembly for preventing workpiece scratches according to claim 1, characterized in that, A sealing cap (41) is detachably snapped onto the outside of the cavity (40) on the clamping arm (4).

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