Anti-deformation clamping jig

Abstract

The utility model belongs to the technical field of clamping jigs, and discloses an anti-deformation clamping jig which comprises a bottom plate, a clamping assembly is arranged on the upper surface of the bottom plate, an anti-clamping assembly is arranged in an inner cavity of the clamping assembly, a motor is started to drive a two-way screw to rotate, and two movable plates are driven to move inwards along sliding grooves at the same time. The arc-shaped clamping plates make contact with the outer surface of the pipe fitting to clamp and position the pipe fitting, the arc-shaped clamping plates make contact with the outer surface of the pipe fitting through the arc-shaped protruding blocks, and the arc-shaped protruding blocks are made of elastic materials, have certain deformation capacity and can slightly deform to adapt to the surface shape of the pipe fitting when subjected to external force. According to the pipe fitting clamping device, the pipe fitting is effectively prevented from being scratched, indented or subjected to other surface damage due to the fact that local stress is too large, in the clamping process, the arc-shaped protruding blocks made of the elastic materials can provide enough friction force under the condition that the surface of the pipe fitting is not damaged, and position deviation caused by sliding is avoided.

Description

Technical Field

[0001] This utility model relates to the field of clamping fixture technology, specifically to an anti-deformation clamping fixture. Background Technology

[0002] Clamping fixtures are devices used to fix workpieces for processing, assembly, or other operations. They are widely used in fields such as machinery manufacturing, electronic assembly, and the automotive industry to ensure that workpieces maintain a stable and accurate position during processing. By designing reasonable contact surfaces and support points, clamping force is evenly distributed on the workpiece, providing stable support and ensuring the positional accuracy of the workpiece during processing, thereby improving product quality.

[0003] Chinese Patent Publication No. CN21865687U discloses an anti-deformation clamping fixture, which includes a fixture body and a mounting block. The fixture body has two opposing ends, and a clamping area is formed on the side of one end of the fixture body for clamping by a machine tool hydraulic chuck. The other end of the fixture body is fixedly connected to the mounting block. The outer contour of the mounting block is adapted to the inner contour of the tube to be processed, and the mounting block is used to fit into the inner cavity of the tube to be processed to fix the tube. This application improves the problem that hydraulic chucks easily cause plastic deformation of the tube to be processed when gripping it.

[0004] In practical applications, existing technologies often result in excessive pressure on the workpiece contact surface due to the clamping force of the clamping fixture being concentrated in that area when fixing the workpiece. This leads to localized stress concentration, causing plastic deformation in that area of ​​the workpiece, resulting in shape changes or surface damage. Based on this, the present invention designs an anti-deformation clamping fixture to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a deformation-resistant clamping fixture.

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

[0007] An anti-deformation clamping fixture includes a base plate, a clamping assembly, and an anti-pinch assembly. The clamping assembly is disposed on the upper surface of the base plate, and the anti-pinch assembly is disposed in the inner cavity of the clamping assembly. The anti-pinch assembly includes two side plates symmetrically fixedly connected to the upper surface of the base plate. The inner cavity of the side plate has a sliding groove. The inner cavity of the sliding groove has a movable plate symmetrically disposed therein. An arc-shaped clamping plate is fixedly connected to the inner side of the movable plate. The fixture includes an inflation tube fixedly connected to the inner cavity of the side plate. One end of the inflation tube is connected to an inflation bladder. A pressure sensor is fixedly embedded in the inner cavity of the inflation bladder.

[0008] Furthermore, four support legs are evenly and fixedly connected to the lower surface of the base plate, and anti-slip pads are fixedly connected to the lower surface of the support legs.

[0009] Furthermore, a motor is fixedly connected to the upper surface of the side plate, and a bidirectional screw is fixedly connected to the output shaft end of the motor through the side plate.

[0010] Furthermore, the lower end of the bidirectional screw is rotatably connected to the bottom of the slide groove, and the inner cavity of the moving plate is provided with threads that are threadedly connected to the outer surface of the bidirectional screw.

[0011] Furthermore, the lower end of the bidirectional screw is rotatably connected to the bottom of the slide groove, and the inner cavity of the moving plate is provided with threads that are threadedly connected to the outer surface of the bidirectional screw.

[0012] Furthermore, the inflatable bladder is a hollow cylinder, and the inflatable bladder is made of elastic material and located inside the tube.

[0013] Furthermore, the other end of the inflation tube is connected to a main pipe, on which an air pump is installed, and the air pump is fixedly connected to the base plate.

[0014] Furthermore, the other end of the inflation tube is connected to a main pipe, on which an air pump is installed, and the air pump is fixedly connected to the base plate. Beneficial effects

[0015] This system starts the air pump to fill the air bladder with air through the main pipe and inflation tube, causing it to inflate and form a cylinder that supports the inner wall of the pipe. A pressure sensor monitors the pressure between the air bladder and the inner wall of the pipe in real time. When the pressure is within the correct preset range, the pressure on the pipe is within a safe range. When the pressure on the pipe increases and slight deformation occurs, the pressure sensor detects that the pressure value has increased and exceeded the preset range. In this case, an alarm sounds, reminding the operator to make adjustments. At the same time, the presence of the air bladder can provide cushioning and support for slight deformation of the pipe, effectively preventing further deformation of the workpiece.

[0016] This solution uses a starting motor to drive a bidirectional screw to rotate, which in turn drives two moving plates to move inward along the slide groove simultaneously. This causes the arc-shaped clamping plate to contact the outer surface of the pipe fitting and clamp it in place. The arc-shaped clamping plate contacts the outer surface of the pipe fitting through arc-shaped protrusions. These protrusions are made of elastic material and have a certain degree of deformation capability. When subjected to external force, they can deform slightly to adapt to the surface shape of the pipe fitting, effectively preventing scratches, indentations, or other surface damage to the pipe fitting due to excessive local force. During the clamping process, the elastic arc-shaped protrusions can provide sufficient friction without damaging the surface of the pipe fitting, and will not cause positional displacement due to slippage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model from a bottom view;

[0020] Figure 3 This is a half-sectional internal structure diagram of the present invention;

[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0022] The labels in the diagram represent:

[0023] 1. Base plate; 101. Support leg; 2. Clamping assembly; 201. Side plate; 202. Slide groove; 203. Bidirectional screw; 204. Moving plate; 205. Motor; 206. Arc-shaped clamping plate; 207. Arc-shaped protrusion; 3. Anti-pinch assembly; 301. Inflatable bladder; 302. Inflatable tube; 303. Valve; 304. Main tube; 305. Air pump; 306. Pressure sensor; 307. Alarm. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The present invention will be further described below with reference to the embodiments.

[0026] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4A deformation-resistant clamping fixture includes a base plate 1, a clamping assembly 2, and an anti-pinch assembly 3. The clamping assembly 2 is provided on the upper surface of the base plate 1 and includes two side plates 201 symmetrically fixedly connected to the upper surface of the base plate 1. The inner cavity of the side plate 201 is provided with a sliding groove 202. The inner cavity of the sliding groove 202 is symmetrically provided with a movable plate 204. An arc-shaped clamping plate 206 is fixedly connected to the inner side of the movable plate 204.

[0027] Specifically, four support legs 101 are uniformly fixedly connected to the lower surface of the base plate 1, and anti-slip pads are fixedly connected to the lower surface of the support legs 101. A motor 205 is fixedly connected to the upper surface of the side plate 201. A bidirectional screw 203 is fixedly connected to the output shaft end of the motor 205 through the side plate 201. The lower end of the bidirectional screw 203 is rotatably connected to the bottom of the slide groove 202. The inner cavity of the moving plate 204 is threaded and threaded to the outer surface of the bidirectional screw 203. A pipe fitting is abutted in the inner cavity of the 206. Multiple arc-shaped protrusions 207 are uniformly fixedly connected to the inner side of the arc-shaped clamping plate 206. The arc-shaped protrusions 207 are made of elastic material.

[0028] Furthermore, the base plate 1 and the support leg 101 serve as the basic support for the entire fixture, ensuring stability. The base plate 1 is usually made of a sturdy material, and the lower surface of the support leg is fixed with an anti-slip pad to improve stability. Then, the motor 205 is started to drive the bidirectional screw 203 to rotate, driving the two moving plates 204 to move inward along the slide groove 202 at the same time, causing the arc-shaped clamping plate 206 to contact the outer surface of the pipe fitting and clamp and position it. The position of the arc-shaped clamping plate 206 can be flexibly adjusted to adapt to pipe fittings of different sizes, improving the practicality of the device.

[0029] The arc-shaped clamp 206 is designed to better fit the surface of the pipe fitting. The arc-shaped clamp 206 contacts the outer surface of the pipe fitting through the arc-shaped protrusion 207. The arc-shaped protrusion 207 is made of an elastic material, such as rubber or silicone, which is soft and elastic and has a certain deformation capacity. When subjected to external force, it can deform slightly to adapt to the surface shape of the pipe fitting, effectively preventing scratches, indentations or other surface damage to the pipe fitting due to excessive local force. At the same time, it has a certain buffering effect. During the clamping process, the elastic material arc-shaped protrusion 207 can provide sufficient friction without damaging the surface of the pipe fitting, and will not cause positional displacement due to slippage. It is particularly suitable for workpieces with high precision requirements or high surface quality requirements, further improving the stability and reliability of clamping.

[0030] In this embodiment of the utility model, the clamping component 2 is provided with an anti-pinch component 3, which includes an inflation tube 302 fixedly connected to the inner cavity of the side plate 201. One end of the inflation tube 302 is connected to an inflation bag 301, and a pressure sensor 306 is fixedly embedded in the inner cavity of the inflation bag 301.

[0031] Specifically, the airbag 301 is a hollow cylinder. The airbag 301 is made of elastic material and is located in the inner cavity of the tube. The other end of the inflation tube 302 is connected to the main tube 304. An air pump 305 is installed on the main tube 304. The air pump 305 is fixedly connected to the base plate 1. An alarm 307 is fixedly connected to the upper surface of the base plate 1. The alarm 307 is electrically connected to the pressure sensor 306.

[0032] Furthermore, the fitting is fitted into two air bladders 301, and then the air pump 305 is started to fill the air bladders 301 with air through the main pipe 304 and the inflation pipe 302, causing them to inflate and form a cylindrical shape to support the inner wall of the fitting. The air bladders 301 are made of elastic material and can be filled to different sizes to adapt to fittings with different inner diameters. The valve 303 controls the inflation and deflation process of the air bladders 301 to ensure the safety and accuracy of the operation. The air pump 305 provides compressed air to drive the inflation and deflation of the air bladders 301.

[0033] The pressure sensor 306 monitors the pressure between the inflatable bladder 301 and the inner wall of the pipe in real time. When the pressure is within the correct preset range (the preset pressure range is the pressure range that the pipe can withstand under normal clamping without deformation), the pressure on the pipe is within a safe range. When the clamping pressure is too high, the pressure on the pipe increases and slight deformation occurs. At this time, the pressure sensor 306 detects a larger pressure value that exceeds the preset range, and the alarm 307 sounds an alarm to remind the operator to make adjustments. At the same time, the presence of the inflatable bladder 301 can provide cushioning and support for slight deformation of the pipe, effectively preventing further deformation of the workpiece.

[0034] Working principle: During the use of the device, the tubing is first placed inside the two inflatable bladders 301. Then, the air pump 305 is started to fill the inflatable bladders 301 with air through the main pipe 304 and the inflation pipe 302, causing them to inflate and form a cylindrical shape to support the inner wall of the tubing. The valve 303 controls the inflation and deflation process of the inflatable bladders 301, and the pressure sensor 306 monitors the pressure between the inflatable bladders 301 and the inner wall of the tubing in real time. When the pressure is within the correct preset range, the motor 205 is started to drive the bidirectional screw 203 to rotate, driving the two moving plates 204 to move inward along the slide groove 202 simultaneously. The moving position causes the arc-shaped clamp 206 to contact the outer surface of the pipe fitting for clamping and positioning. The arc-shaped clamp 206 contacts the outer surface of the pipe fitting through the arc-shaped protrusion 207. The arc-shaped protrusion 207 is made of elastic material and can deform slightly when subjected to external force to adapt to the surface shape of the pipe fitting, effectively preventing the pipe fitting from being scratched, indented or otherwise damaged due to excessive local force. When the clamping pressure is too high, the pressure on the pipe fitting increases and causes slight deformation. At this time, the pressure sensor 306 detects that the pressure value has increased. When it exceeds the preset value range, the alarm 307 sounds an alarm to remind the operator to make adjustments.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A deformation-resistant clamping fixture, comprising a base plate (1), characterized in that: A clamping assembly (2) is provided on the upper surface of the base plate (1), and an anti-pinch assembly (3) is provided in the inner cavity of the clamping assembly (2). The clamping assembly (2) includes two side plates (201) symmetrically fixedly connected to the upper surface of the base plate (1). The side plates (201) have a sliding groove (202) in their inner cavity. The sliding groove (202) has a movable plate (204) symmetrically arranged in its inner cavity. The movable plate (204) has an arc-shaped clamping plate (206) fixedly connected to its inner side. The anti-pinch assembly (3) includes an inflation tube (302) fixedly connected to the inner cavity of the side plate (201), one end of the inflation tube (302) is connected to an inflation bag (301), and a pressure sensor (306) is fixedly embedded in the inner cavity of the inflation bag (301).

2. The anti-deformation clamping fixture according to claim 1, characterized in that, Four support legs (101) are uniformly fixedly connected to the lower surface of the base plate (1), and anti-slip pads are fixedly connected to the lower surface of the support legs (101).

3. The anti-deformation clamping fixture according to claim 1, characterized in that, A motor (205) is fixedly connected to the upper surface of the side plate (201), and a bidirectional screw (203) is fixedly connected to the output shaft end of the motor (205) through the side plate (201).

4. The anti-deformation clamping fixture according to claim 3, characterized in that, The lower end of the bidirectional screw (203) is rotatably connected to the bottom of the slide groove (202), and the inner cavity of the moving plate (204) is provided with threads that are threaded to the outer surface of the bidirectional screw (203).

5. The anti-deformation clamping fixture according to claim 1, characterized in that, The inner cavity of the arc-shaped clamp (206) abuts against the pipe fitting, and multiple arc-shaped protrusions (207) are uniformly fixedly connected to the inner side of the arc-shaped clamp (206). The arc-shaped protrusions (207) are made of elastic material.

6. The anti-deformation clamping fixture according to claim 5, characterized in that, The inflatable bladder (301) is a hollow cylinder, and the inflatable bladder (301) is made of elastic material and located in the inner cavity of the tube.

7. The anti-deformation clamping fixture according to claim 1, characterized in that, The other end of the inflation tube (302) is connected to the main tube (304), and an air pump (305) is installed on the main tube (304). The air pump (305) is fixedly connected to the base plate (1).

8. The anti-deformation clamping fixture according to claim 1, characterized in that, An alarm (307) is fixedly connected to the upper surface of the base plate (1), and the alarm (307) is electrically connected to the pressure sensor (306).

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