Clamp for high-precision part machining

Abstract

The high-precision part machining clamp comprises a base, a sliding groove is formed in the top of the base, the inner wall of the sliding groove is slidably connected with two clamping seats, the two clamping seats are arranged in a bilateral symmetry mode, and the tops of the clamping seats are rotationally connected with rotating clamping blocks through first rotating shafts; the outer wall of the front end of the rotating clamping block is rotationally connected with a micro-motion clamping block through a second rotating shaft, and a flexible clamping base is detachably and fixedly installed on the outer wall of the front end of the micro-motion clamping block. And therefore, the second screw rod and the screw hole can be conveniently assembled, the practicability of equipment use is improved, the flexible U-shaped clamping piece can be conveniently replaced, and the service life of the clamp can be conveniently prolonged.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically a fixture for high-precision parts processing. Background Technology

[0002] In the machining of high-precision parts, the requirements for part fixation are extremely high. Traditional fixtures often fail to guarantee the precise positioning of parts during machining, and slight displacements can easily occur, leading to compromised machining accuracy. When machining high-precision parts, it is necessary to stably clamp the outer wall of the part to prevent loosening of the clamping parts between the part and the fixture during machining, which would affect the machining accuracy. Existing fixtures for machining high-precision parts are generally not convenient for multi-point clamping of irregularly shaped parts, nor are they convenient for adaptive adjustment of the fixture based on the surface of irregularly shaped parts, and they are not convenient for improving clamping stability. Utility Model Content

[0003] The purpose of this invention is to provide a high-precision parts machining fixture to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-precision parts machining fixture includes a base, a groove on the top of the base, a clamping seat slidably connected to the inner wall of the groove, two clamping seats symmetrically arranged on the left and right, a rotating clamping block rotatably connected to the top of the clamping seat via a first rotating shaft, a micro-motion clamping block rotatably connected to the front outer wall of the rotating clamping block via a second rotating shaft, and a flexible clamping seat detachably and fixedly installed on the front outer wall of the micro-motion clamping block.

[0006] In a preferred embodiment of this utility model, a motor groove is provided on the side wall of the base, and a bearing seat is fixedly installed at the center of the inner wall of the groove.

[0007] In a preferred embodiment of this utility model, the inner walls of the left and right sides of the slide groove and the bearing seats are rotatably connected to the positive and negative threaded screws through the bearings. The outer walls of the two ends of the positive and negative threaded screws are respectively threaded to the inner walls of the two clamps. The servo motor is fixedly installed on the inner wall of the motor groove.

[0008] In a preferred embodiment of this utility model, the outer wall of the servo motor is connected to the outer walls of both ends of the positive and negative threaded screws through gear meshing, and the first threaded rod is fixedly installed on the bottom outer wall of the base.

[0009] In a preferred embodiment of this utility model, the bottom end of the clamp is provided with a slide, and the outer wall of the slide is threadedly connected to the outer wall of the positive and negative threaded screw.

[0010] In a preferred embodiment of the present invention, the outer wall of the front end of the rotating clamping block is provided with a countersunk platform, the top of the countersunk platform is provided with a round hole, and the outer wall of the bottom end of the micro-movement clamping block is fixedly installed with a second rotating shaft.

[0011] In a preferred embodiment of this utility model, a damping pad is sleeved on the outer wall of the second rotating shaft, the second rotating shaft and the damping pad are rotatably connected to the inner wall of the circular hole, the micro-motion clamp is configured as U-shaped, and a screw hole is opened on the outer wall of the front end of the micro-motion clamp.

[0012] In a preferred embodiment of this utility model, the inner wall of the screw hole is threadedly connected to a flexible clamping seat via a second screw. The flexible clamping seat includes a mounting plate, and a flexible U-shaped clamp is fixedly mounted on the outer wall of the front end of the mounting plate.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0014] 1. By setting a clamping base, a rotating clamping block is rotatably connected to the top of the clamping base, and a micro-motion clamping block is rotatably connected to the top of the rotating clamping block. This allows the rotating clamping block to rotate in conjunction with the micro-motion clamping block, enabling the flexible U-shaped clamping piece to adaptively adjust to the shape of the part's surface when clamping the outer wall of irregularly shaped parts. This provides stable clamping even for irregularly shaped parts.

[0015] 2. Insert the wrench into the limiting hole at the top of the mounting plate to facilitate the rotation of the mounting plate and the second screw, thereby facilitating the assembly between the second screw and the screw hole, improving the practicality of the equipment, making it easier to replace the flexible U-shaped clamp, and extending the service life of the clamp. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the main structure of a fixture for machining high-precision parts.

[0018] Figure 2 This is a schematic diagram of the bottom view of a fixture used for machining high-precision parts.

[0019] Figure 3 This is a schematic diagram of the side view of a fixture used for machining high-precision parts.

[0020] Figure 4 This is an exploded structural diagram of a fixture used for machining high-precision parts.

[0021] Figure 5 This is an exploded view of the rotating clamping block in a high-precision parts machining fixture.

[0022] Figure 6 This is a schematic diagram of a replaceable flexible chuck structure in a high-precision parts machining fixture.

[0023] In the figure: base 100, motor slot 110, slide groove 120, slide groove 130, servo motor 140, gear 141, first threaded rod 150, positive and negative threaded screw 160, clamp 200, slide 210, rotating clamp 230, first rotating shaft 231, countersunk platform 232, round hole 233, micro-motion clamp 240, screw hole 241, mounting plate 250, second screw 251, flexible U-shaped clamp 252. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] Example 1: As Figures 1-4 The device includes a base 100, with a groove 120 on the top of the base 100. The inner wall of the groove 120 is slidably connected to a clamp 200. Two clamps 200 are symmetrically arranged on the left and right sides. The top of the clamp 200 is rotatably connected to a rotating clamp 230 via a first rotating shaft 231. The outer wall of the front end of the rotating clamp 230 is rotatably connected to a micro-motion clamp 240 via a second rotating shaft. The outer wall of the front end of the micro-motion clamp 240 can be detachably and fixedly installed with a flexible clamping seat.

[0026] The specific application scenario of this embodiment is as follows: By setting a clamping base 200, a rotating clamping block 230 is rotatably connected to the top of the clamping base 200, and a micro-motion clamping block 240 is rotatably connected to the top of the rotating clamping block 230. This allows the rotating clamping block 230 to rotate in conjunction with the micro-motion clamping block 240, enabling the flexible U-shaped clamping piece 252 to adaptively adjust according to the shape of the part's surface when clamping the outer wall of an irregularly shaped part. This provides stable clamping for irregularly shaped parts and improves the practicality of the equipment. Furthermore, by setting a servo motor 140 to drive the forward and reverse threaded screw 160... The rod rotates, allowing the positive and negative threaded screws 160 to control the left and right clamps 200 to drive the flexible U-shaped clamps 252 to clamp the parts. This improves the practicality of the fixture and the stability of the clamping structure. By setting replaceable flexible U-shaped clamps 252, a wrench can be inserted into the limiting hole 253 on the top of the mounting plate 250, thereby facilitating the control of the rotation of the mounting plate 250 and the second screw 251. This facilitates the assembly between the second screw 251 and the screw hole 241, improving the practicality of the equipment and making it easier to replace the flexible U-shaped clamps 252, thus extending the service life of the fixture.

[0027] Example 2: Figure 3 and Figure 4 The base 100 has a motor groove 110 on its side wall. A bearing seat 121 is fixedly installed at the center of the inner wall of the slide groove 120. The inner walls of the left and right sides of the slide groove 120 and the bearing seat 121 are rotatably connected to the positive and negative threaded screws 160 through bearings. The outer walls of the two ends of the positive and negative threaded screws 160 are threadedly connected to the inner walls of the two clamps 200 respectively. A servo motor 140 is fixedly installed on the inner wall of the motor groove 110. The outer wall of the servo motor 140 is connected to the outer walls of the two ends of the positive and negative threaded screws 160 through gear 141. A first threaded rod 150 is fixedly installed on the bottom outer wall of the base 100.

[0028] The specific application scenario of this embodiment is as follows: by turning on the servo motor 140 to drive the forward and reverse threaded screws 160 to rotate, the forward and reverse threaded screws 160 can drive the two left and right clamps 200 to move towards each other, clamping the outer walls of both sides of the part. When the two clamps 200 are close to the outer wall of the part, the flexible U-shaped clamp 252 is attached to the outer wall of the part. Under the continuous pushing action of the forward and reverse threaded screws 160 on the clamps 200, the micro-motion clamp 240 is driven to rotate, so that the flexible U-shaped clamp 252 can also achieve a good clamping effect on the surface of the part with an irregular structure.

[0029] Example 3: As Figures 4-6The bottom end of the clamp 200 is provided with a slide 210. The outer wall of the slide 210 is threadedly connected to the outer wall of the positive and negative threaded screw 160. The front end outer wall of the rotating clamp 230 is provided with a countersunk 232. The top of the countersunk 232 is provided with a round hole 233. The bottom end outer wall of the micro-movement clamp 240 is fixedly installed with a second rotating shaft. The outer wall of the second rotating shaft is sleeved with a damping pad. The second rotating shaft and the damping pad are rotatably connected to the inner wall of the round hole 233. The micro-movement clamp 240 is U-shaped. The front end outer wall of the micro-movement clamp 240 is provided with a screw hole 241. The inner wall of the screw hole 241 is threadedly connected to the flexible clamping seat through the second screw 251. The flexible clamping seat includes a mounting plate 250. The front end outer wall of the mounting plate 250 is fixedly installed with a flexible U-shaped clamp 252.

[0030] The specific application scenario of this embodiment is as follows: By setting a countersunk platform 232 for rotating connection of the rotating clamping block 230, the top of the rotating clamping block 230 is flush with the top of the clamping seat 200, which improves the clamping force and force distribution when processing high-precision parts. By setting a damping pad, the micro-motion clamping block 240 plays a damping role when rotating, which helps to slow down the rotation of the micro-motion clamping block 240, thereby avoiding collision between the micro-motion clamping block 240 and the outer wall of the part, improving the protection of the part surface during equipment use. By setting a flexible U-shaped clamping piece 252 for clamping the surface of the part, the friction can be increased, improving the stability of clamping. At the same time, it can also clamp the surface of the part at multiple points, playing an anti-slip role, preventing the part from loosening during processing, and improving the processing accuracy.

[0031] The working principle of this utility model is as follows: When used by those skilled in the art, the fixture is threaded onto the processing equipment via the first threaded rod 150. The part to be processed is placed in the two clamps 200. By activating the servo motor 140, the positive and negative threaded screws 160 are driven to rotate, so that the positive and negative threaded screws 160 can drive the left and right clamps 200 to move towards each other, clamping the outer walls of both sides of the part. When the two clamps 200 are close to the outer wall of the part, the flexible U-shaped clamp 252 adheres to the outer wall of the part. The outer wall is attached to the outer wall of the part, and under the continuous pushing action of the positive and negative threaded screws 160 on the clamping seat 200, the micro-movement clamping block 240 is driven to rotate, so that the flexible U-shaped clamping piece 252 can also have a good clamping effect on the surface of the part with an irregular structure. Under the squeezing action, the rotating clamping block 230 rotates and adjusts the angle at the top of the clamping seat 200 through the first rotating shaft 231, so that it can have a good adaptation and clamping effect on the outer wall of parts with different structures, which can improve the stability of clamping and improve the machining accuracy of high-precision parts.

[0032] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-precision parts machining fixture, comprising a base (100), wherein a groove (120) is formed on the top of the base (100), and a clamping seat (200) is slidably connected to the inner wall of the groove (120), characterized in that, Two clamping seats (200) are symmetrically arranged on the left and right. The top of the clamping seat (200) is rotatably connected to the rotating clamping block (230) through the first rotating shaft (231). The outer wall of the front end of the rotating clamping block (230) is rotatably connected to the micro-motion clamping block (240) through the second rotating shaft. The outer wall of the front end of the micro-motion clamping block (240) can be detachably and fixedly installed with a flexible clamping seat.

2. The high-precision parts machining fixture according to claim 1, characterized in that, The base (100) has a motor groove (110) on its side wall, and a bearing seat (121) is fixedly installed at the center of the inner wall of the slide (120).

3. A high-precision parts machining fixture according to claim 2, characterized in that, The inner walls of the left and right sides of the slide (120) and the bearing seat (121) are rotatably connected to the positive and negative threaded screws (160) through the bearings. The outer walls of the two ends of the positive and negative threaded screws (160) are respectively threaded to the inner walls of the two clamps (200). The servo motor (140) is fixedly installed on the inner wall of the motor slot (110).

4. A high-precision parts machining fixture according to claim 3, characterized in that, The outer wall of the servo motor (140) is connected to the outer walls of both ends of the positive and negative threaded screw (160) by gear (141) meshing and transmission, and the first threaded rod (150) is fixedly installed on the bottom outer wall of the base (100).

5. A high-precision parts machining fixture according to claim 1, characterized in that, The bottom end of the clamp (200) is provided with a slide (210), and the outer wall of the slide (210) is threadedly connected to the outer wall of the positive and negative thread screw (160).

6. A high-precision parts machining fixture according to claim 1, characterized in that, The front end outer wall of the rotating clamp (230) is provided with a recessed platform (232), and a round hole (233) is opened on the top of the recessed platform (232). The bottom end outer wall of the micro-movement clamp (240) is fixedly installed with a second rotating shaft.

7. A high-precision parts machining fixture according to claim 6, characterized in that, The outer wall of the second rotating shaft is fitted with a damping pad, and the second rotating shaft and the damping pad are rotatably connected to the inner wall of the circular hole (233). The micro-motion clamp (240) is U-shaped, and the outer wall of the front end of the micro-motion clamp (240) is provided with a screw hole (241).

8. A high-precision parts machining fixture according to claim 7, characterized in that, The inner wall of the screw hole (241) is threadedly connected to the flexible clamping seat by the second screw (251). The flexible clamping seat includes a mounting plate (250), and a flexible U-shaped clamping piece (252) is fixedly installed on the outer wall of the front end of the mounting plate (250).

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