Pneumatic guide rail clamping device

Abstract

The utility model discloses a pneumatic type guide rail clamping device which comprises a clamping device body, wedge-shaped blocks arranged in cavities in the two sides of the clamping device body and friction blocks in movable contact with the wedge-shaped blocks, and springs are arranged between one ends of the wedge-shaped blocks and the inner walls of the cavities of the clamping device body. And the end part of the cavity of the clamp main body at the other end is connected with a power source. The spring pushes the wedge-shaped block in a normal state, so that the wedge-shaped block extrudes the friction block, the friction force between the friction block and the guide rail is increased, the guide rail is held tightly, and the braking action is achieved. Meanwhile, thrust is provided for the other end of the wedge-shaped block through the power source, the wedge-shaped block is pushed to extrude and compress the spring, and the thrust applied to the friction block is released, so that the braking action is released, and the requirement that the sliding block or the mechanism moves along the guide rail is met.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining centers, in particular to a pneumatic guide rail clamp. Background Art

[0002] Existing CNC machining centers are all equipped with guide rail clamps, in which the clamping action mainly relies on the friction block to press the guide rail, and the friction between the friction block and the guide rail is generated to achieve braking. According to the different power sources, the clamps can be divided into pneumatic, hydraulic and manual types. The principle is to push the wedge block through the piston thrust generated by gas or liquid, and the wedge block squeezes the friction block, and the friction block realizes the clamping and loosening actions. When the clamp of the prior art clamps the guide rail, it is necessary to continuously provide high-pressure air or hydraulic oil to push the wedge block, so as to ensure the squeezing effect of the wedge block on the friction block, so as to achieve the braking effect. Although this method can ensure the stability of the braking effect under normal working conditions, when the air source or hydraulic source fails, it will cause the clamp to be unable to maintain the clamping effect on the guide rail.

[0003] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a pneumatic guide rail clamp.

[0005] The technical solution of the utility model is as follows: a pneumatic guide rail clamp is provided, comprising: a clamp body, wedge blocks arranged in cavities on both sides of the clamp body, and friction blocks in active contact with the wedge blocks, a spring is arranged between one end of the wedge block and the inner wall of the cavity of the clamp body, and the cavity end of the clamp body at the other end is connected to a power source.

[0006] Furthermore, a slot is provided in the middle of the clamp body, and through holes are provided on the side walls of the cavities on both sides of the clamp body corresponding to the slot, and the friction blocks pass through the through holes.

[0007] Furthermore, a plurality of friction grooves are arranged on a side of the friction block away from the wedge block.

[0008] Furthermore, a piston cavity is provided at one end of the clamp body away from the spring, a piston is movably provided in the piston cavity, the piston is connected to the wedge block, and a power source is connected to one side of the piston cavity away from the cavity of the clamp body.

[0009] Furthermore, cover plates are respectively provided at both ends of the clamp body, and the cover plate close to the piston cavity is provided with an air outlet corresponding to the piston cavity, an air path is provided inside the cover plate, an air inlet is provided at one end of the air path, and a pneumatic interface is provided on the air inlet.

[0010] Furthermore, a connecting groove is provided on the wedge block, and a connecting block is provided on the friction block corresponding to the connecting groove, and the connecting block is embedded in the connecting groove.

[0011] Furthermore, the clamp body is provided with a pressure cover corresponding to the cavity, and the pressure cover covers the cavity.

[0012] By adopting the above scheme, the utility model pushes the wedge block through the spring under normal conditions, so that the wedge block squeezes the friction block, thereby increasing the friction between the friction block and the guide rail, thereby holding the guide rail tightly and achieving the braking action. At the same time, the power source provides thrust to the other end of the wedge block, pushing the wedge block to squeeze and compress the spring, and releasing the thrust applied to the friction block, thereby releasing the braking action, meeting the needs of the slider or mechanism to move along the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 Schematic diagram of the structure of the wedge block.

[0015] Figure 3 Schematic diagram of the structure of the friction block. DETAILED DESCRIPTION

[0016] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] See also Figure 1 The utility model provides a pneumatic guide rail clamp, comprising: a clamp body 1, wedge blocks 2 arranged in cavities 11 on both sides of the clamp body 1, and friction blocks 3 that are in active contact with the wedge blocks 2, a spring 4 is arranged between one end of the wedge block 2 and the inner wall of the cavity 11 of the clamp body 1, and the other end of the cavity 11 of the clamp body 1 is connected to a power source.

[0018] When working, the wedge block 2 is pushed by the spring 4 under normal conditions, and the friction block 3 is squeezed out by the wedge block 2, so that the guide rail is pressed and fixed by the friction block 3, thereby achieving the braking effect. When the brake clamping state needs to be released, a thrust is applied to the cavity 11 of the clamp body 1 through the power source, so that the wedge block 2 is pushed to move toward the direction of the spring 4, thereby compressing the spring 4 and removing the thrust applied to the friction block 3, thereby releasing the clamping and braking effect on the guide rail.

[0019] Compared with the prior art which uses pneumatic or hydraulic means to push the wedge block 2 to squeeze the friction block 3 to achieve the setting method of clamping and braking the guide rail, the utility model uses a spring 4 to push the wedge block 2, thereby squeezing the friction block 3 to clamp the guide rail to achieve braking, thereby achieving braking with fewer moving parts and meeting the requirements of assembly accuracy and braking accuracy.

[0020] A slot is provided in the middle of the clamp body 1, and through holes are provided on the side walls of the cavities 11 on both sides of the clamp body 1 corresponding to the slot, and the friction block 3 passes through the through holes. During installation, the slot is sleeved on the guide rail, so that the friction block 3 can be pushed out from the through holes, so that the friction block 3 is pressed against the guide rail from both sides, and the friction between the friction block 3 and the guide rail is increased by applying pressure between the friction block 3 and the guide rail, thereby achieving a braking effect.

[0021] The friction block 3 is provided with a plurality of friction grooves on one side away from the wedge block 2. By providing the friction grooves, the friction force between the friction block 3 and the guide rail is increased, thereby effectively improving the effect of clamping and braking the guide rail, thereby achieving a braking effect.

[0022] The end of the clamp body 1 away from the spring 4 is provided with a piston chamber 12, and a piston 121 is movably provided in the piston chamber 12. The piston 121 is connected to the wedge block 2, and the side of the piston chamber 12 away from the cavity 11 of the clamp body 1 is connected to a power source. In some embodiments, compressed air is used as a power source, and the piston 121 is pushed by the compressed air, so that the piston 121 moves toward the wedge block 2, thereby pushing the wedge block 2, so that the wedge block 2 squeezes the spring 4 and releases the force applied to the friction block 4, thereby releasing the braking action. Compared with the power method using hydraulic oil, using compressed air to push the piston to generate power can effectively reduce pollution to the environment.

[0023] Cover plates 13 are respectively provided at both ends of the clamp body 1. The cover plate 13 close to the piston cavity 12 is provided with an air outlet 131 corresponding to the piston cavity 12. An air circuit is provided inside the cover plate 13. An air inlet 132 is provided at one end of the air circuit. A pneumatic interface is provided on the air inlet 132. The pneumatic interface is connected to the air source through a pipeline, so that compressed air is provided through the air source and distributed to the piston cavity 12 corresponding to the cavity 11 on both sides of the clamp body 1 through the air circuit, so as to push the piston 121 in the piston cavity 12, and provide a pushing wedge block 2 to release the brake.

[0024] See also Figure 2 , Figure 3The wedge block 2 is provided with a connecting groove 21, and the friction block 3 is provided with a connecting block 31 corresponding to the connecting groove 21, and the connecting block 31 is embedded in the connecting groove 21. By embedding the connecting block 31 in the connecting groove 21, when the wedge block 2 is pushed by the piston 121 to squeeze the spring 4, the connecting block 31 is pulled through the connecting groove 21, thereby driving the friction block 3 to move, and the relatively large space in the connecting groove 21 allows the connecting block 31 to have a certain range of movement, thereby realizing the release of the friction block 3 and releasing the clamping brake state of the guide rail.

[0025] The clamp body 1 is provided with a pressure cover 14 corresponding to the cavity 11, and the pressure cover 14 covers the cavity 11, thereby providing certain protection for the inside of the cavity 11, and by removing the pressure cover 14, the installation and maintenance of the spring 4, wedge block 2 and friction block 3 in the cavity 11 can be facilitated.

[0026] In the embodiment provided by the utility model, the piston 121 is pushed by the thrust generated by compressed air, so that the piston 121 pushes the wedge block 2 forward. The connecting groove 21 on the wedge block 2 is connected to the connecting block 31 on the friction block 3. When the piston 121 drives the wedge block 2 to move, the wedge block 2 drives the friction block 3 to move through the connection relationship between the connecting groove 21 and the connecting block 31, thereby realizing the action of releasing the brake, and the friction block 3 is separated from the guide rail. When the air release valve is opened, the air pressure in the piston chamber 12 drops, and under the push of the spring 4, the wedge block 2 pushes the friction block 3 to move, so that the friction block 3 is pressed against the guide rail. The friction blocks 3 on both sides of the guide rail are pressed against the guide rail at the same time, the guide rail is tightened, the friction between the friction block 3 and the guide rail is increased, and the braking action is realized.

[0027] In summary, the utility model uses a spring to push the wedge block under normal conditions, so that the wedge block squeezes the friction block, thereby increasing the friction between the friction block and the guide rail, thereby holding the guide rail tightly and achieving a braking action. At the same time, a power source provides a thrust to the other end of the wedge block, pushing the wedge block to squeeze and compress the spring, and releasing the thrust applied to the friction block, thereby releasing the braking action, meeting the needs of the slider or mechanism to move along the guide rail.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic guide rail clamp, characterized in that: include: A clamp body, wedge blocks arranged in the cavities on both sides of the clamp body, and friction blocks in active contact with the wedge blocks, a spring is arranged between one end of the wedge block and the inner wall of the cavity of the clamp body, and the cavity end of the clamp body at the other end is connected to a power source.

2. The pneumatic guide rail clamp according to claim 1, characterized in that: A slot is arranged in the middle of the clamp body, and through holes are arranged on the side walls of the cavities on both sides of the clamp body corresponding to one side of the slot, and the friction blocks pass through the through holes.

3. The pneumatic guide rail clamp according to claim 1, characterized in that: A plurality of friction grooves are arranged on one side of the friction block away from the wedge block.

4. The pneumatic guide rail clamp according to claim 1, characterized in that: A piston cavity is arranged at one end of the clamp body away from the spring, a piston is movably arranged in the piston cavity, the piston is connected to the wedge block, and a power source is connected to one side of the piston cavity away from the cavity of the clamp body.

5. The pneumatic guide rail clamp according to claim 4, characterized in that: Cover plates are respectively provided at both ends of the clamp body, and the cover plate close to the piston cavity is provided with an air outlet corresponding to the piston cavity, an air path is provided inside the cover plate, an air inlet is provided at one end of the air path, and a pneumatic interface is provided on the air inlet.

6. The pneumatic guide rail clamp according to claim 1, characterized in that: The wedge block is provided with a connecting groove, the friction block is provided with a connecting block corresponding to the connecting groove, and the connecting block is embedded in the connecting groove.

7. The pneumatic guide rail clamp according to claim 1, characterized in that: The clamp body is provided with a pressure cover corresponding to the cavity, and the pressure cover covers the cavity.

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