A high-precision mechanical parts positioning and clamping device

Abstract

This utility model discloses a high-precision mechanical parts positioning and clamping device, relating to the technical field of parts processing equipment. It includes a processing table, with a motor mounting bracket fixedly connected to the bottom of the processing table. Multiple sliders are evenly rotatable around an axis on the top of the processing table. A motor is fixedly connected to the top of the motor mounting bracket. Multiple mounting blocks are respectively mounted on the top of the sliders. A rotating disk is fixedly connected to the output end of the motor. Two clamping block components are symmetrically arranged on the upper and lower sides of the mounting blocks near each other. Multiple movable clamping blocks are respectively arranged inside the mounting blocks near each other. Multiple pull rods are rotatably connected to the outer side of the rotating disk, rotating evenly around an axis. Multiple bolts are symmetrically arranged at the two ends of the two clamping block components near each other. With the above structure, this utility model can quickly assemble and disassemble the movable clamping blocks, improving assembly and disassembly efficiency, while avoiding impact and ensuring clamping accuracy.

Description

Technical Field

[0001] This utility model relates to the field of parts processing equipment technology, specifically to a high-precision mechanical parts positioning and clamping device. Background Technology

[0002] High-precision mechanical parts refer to precision mechanical components whose geometric dimensional tolerances, form and position accuracy parameters, and surface integrity indicators are strictly controlled at the micrometer or even nanometer level. The manufacturing precision deviation of such components directly affects the dynamic response performance, long-term service life, and full life cycle functional reliability of end devices. Especially in cutting-edge fields such as aerospace, semiconductors, and precision medicine, they have become core foundational components supporting technological breakthroughs.

[0003] In current high-precision machining processes, specialized fixtures are required to ensure accuracy. To enhance dynamic rigidity, these fixtures often place the clamping unit tightly against the machining table, resulting in limited operating space, impacting changeover efficiency. Furthermore, the confined space may necessitate hammering for disassembly, potentially reducing fixture precision and consequently affecting machining accuracy. Therefore, we propose a high-precision mechanical part positioning and clamping device to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a high-precision mechanical parts positioning and clamping device to solve the problem mentioned in the background art that in the existing high-precision mechanical parts processing, it is necessary to use professional fixtures to ensure the accuracy of processing. In order to improve dynamic rigidity, these fixtures will set the clamping unit tightly against the processing table, which will result in a small operating space, affecting the change efficiency. Moreover, due to the limited space, disassembly may be assisted by knocking, which may reduce the accuracy of the fixture and thus affect the processing accuracy.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-precision mechanical part positioning and clamping device includes a processing table, a motor mounting bracket fixedly connected to the bottom of the processing table, multiple sliders uniformly rotating around an axis on the top of the processing table, a motor fixedly connected to the top of the motor mounting bracket, multiple mounting blocks respectively provided on the top of the multiple sliders, a rotating disk fixedly connected to the output end of the motor, two clamping block components symmetrically arranged on the upper and lower sides of the multiple mounting blocks close to each other, multiple movable clamping blocks respectively provided inside the mounting blocks close to each other, multiple pull rods rotatably connected to the outer side of the rotating disk uniformly rotating around an axis, and multiple bolts symmetrically arranged at the two ends of the two clamping block components close to each other; The clamping block component includes a mounting plate, on both sides of the lower surface of the mounting plate, a plurality of positioning blocks are evenly spaced, and a trapezoidal top block is provided on the lower surface of the mounting plate near the movable clamping block. The side projection of the trapezoidal top block is trapezoidal, and the inclined side of the trapezoidal top block is inclined toward the positioning block.

[0006] Furthermore, the processing table is provided with multiple waist-shaped grooves that rotate uniformly around an axis.

[0007] Furthermore, the multiple sliders are slidably connected to the processing table through multiple waist-shaped grooves, and the bottom of the slider passes through the processing table and is rotatably connected to the other end of the pull rod.

[0008] Furthermore, the inner sides of the multiple mounting blocks are provided with horizontal mounting grooves, and the two sides of the mounting blocks that are close to each other are provided with multiple positioning grooves at even intervals. The bottom of the mounting blocks is fixedly connected to the slider.

[0009] Furthermore, the movable clamping block includes a mounting pin, one end of which is fixedly connected to a limiting plate. The mounting pin is slidably connected to the mounting block through a mounting groove. A clamping block is fixedly connected to the other side of the limiting plate. One end of the limiting plate is in contact with one end of the mounting block. A tightening inclined surface is provided on the end of the clamping block near the limiting plate. The tightening inclined surface is inclined toward one end of the clamping block. Multiple positioning blocks are slidably connected to multiple positioning grooves respectively. The upper inclined side of the trapezoidal top block is in contact with the upper tightening inclined surface of the clamping block.

[0010] Furthermore, the multiple bolts press the two mounting plates on the upper and lower sides of the mounting block together.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention involves inserting the mounting pin into the mounting groove so that the limiting plate fits against one end of the mounting block. Multiple positioning blocks on the two mounting plates are then inserted into the multiple positioning grooves on the mounting block. Multiple bolts are then passed through the two mounting plates and tightened, bringing the two mounting plates close together to clamp the mounting block. This allows the two trapezoidal top blocks to clamp the clamping inclined surface on the clamping block via their inclined sides, enabling quick assembly and disassembly of the movable clamping block, improving assembly and disassembly efficiency. At the same time, it avoids impact and ensures the accuracy of the clamp. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the mounting structure of this utility model from below; Figure 3 This is a schematic diagram of the installation structure of the clamping block component of this utility model; Figure 4 This is a schematic diagram of the movable clamping block installation structure of this utility model; Reference numerals: 1. Processing table; 101. Waist-shaped groove; 2. Motor mounting bracket; 3. Slider; 4. Motor; 5. Mounting block; 501. Mounting groove; 502. Positioning groove; 6. Rotating disk; 7. Clamping block component; 701. Mounting plate; 702. Positioning block; 703. Trapezoidal top block; 8. Movable clamping block; 801. Mounting pin; 802. Limiting plate; 803. Clamping block; 804. Tightening inclined surface; 9. Tie rod; 10. Bolt. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-4 This utility model provides a technical solution: a high-precision mechanical parts positioning and clamping device, including a processing table 1, a motor mounting frame 2 fixedly connected to the bottom of the processing table 1, a plurality of sliders 3 uniformly rotated around the axis on the top of the processing table 1, a motor 4 fixedly connected to the top of the motor mounting frame 2, a plurality of mounting blocks 5 respectively set on the top of the plurality of sliders 3, a rotating disk 6 fixedly connected to the output end of the motor 4, two clamping block components 7 symmetrically arranged on the upper and lower sides of the plurality of mounting blocks 5 close to each other, a plurality of movable clamping blocks 8 respectively set inside the mounting blocks 5 close to each other, a plurality of pull rods 9 rotatably connected to the outer side of the rotating disk 6 uniformly rotated around the axis, and a plurality of bolts 10 symmetrically arranged at the two ends of the two clamping block components 7 close to each other; The clamping block component 7 includes a mounting plate 701. Multiple positioning blocks 702 are evenly spaced on both sides of the lower surface of the mounting plate 701. A trapezoidal top block 703 is provided on the lower surface of the mounting plate 701 near the movable clamping block 8. The side projection of the trapezoidal top block 703 is trapezoidal, and the inclined side of the trapezoidal top block 703 is inclined toward the positioning block 702.

[0015] The processing table 1 has multiple waist-shaped grooves 101 that are evenly rotated around an axis. In this example, by setting multiple waist-shaped grooves 101, the slider 3 can stably drive the movable clamping block 8 inside the top mounting block 5 to move, thereby clamping the part.

[0016] Multiple sliders 3 are slidably connected to the processing table 1 through multiple waist-shaped grooves 101, and the bottom of the slider 3 passes through the processing table 1 and is rotatably connected to the other end of the pull rod 9.

[0017] Multiple mounting blocks 5 have horizontally arranged mounting grooves 501 on their inner sides, and multiple vertically evenly spaced positioning grooves 502 are arranged on both sides of the mounting blocks 5 near one end of each other. The bottom of the mounting blocks 5 is fixedly connected to the slider 3. In this example, by setting multiple positioning grooves 502, two clamping block components 7 can be quickly installed, which facilitates the fixing of the movable clamping block 8.

[0018] The movable clamping block 8 includes a mounting pin 801. One end of the mounting pin 801 is fixedly connected to a limiting plate 802. The mounting pin 801 is slidably connected to the mounting block 5 through a mounting groove 501. A clamping block 803 is fixedly connected to the other side of the limiting plate 802. One end of the limiting plate 802 is in contact with one end of the mounting block 5. A clamping inclined surface 804 is provided near the end of the clamping block 803 close to the limiting plate 802. The clamping inclined surface 804 is inclined towards one end of the clamping block 803. Multiple positioning blocks 702 are slidably connected to multiple positioning grooves 502 respectively. The upper inclined edge of the trapezoidal top block 703 is in contact with the upper clamping inclined surface 804 of the clamping block 803. In this example, by providing the clamping inclined surface 804, the two trapezoidal top blocks 703 on the upper and lower sides are easily clamped together, thereby fixing the movable clamping block 8.

[0019] Multiple bolts 10 tighten the two mounting plates 701 on the upper and lower sides of the mounting block 5.

[0020] Working principle: Motor 4 drives the rotating disk 6 to rotate, which in turn drives multiple pull rods 9 to pull multiple sliders 3 to slide along the waist-shaped groove 101, so that multiple movable clamping blocks 8 inside multiple mounting blocks 5 clamp the parts for processing. When it is necessary to replace the movable clamping block 8, motor 4 reverses, which drives multiple mounting blocks 5 to move away from each other, loosens multiple bolts 10, removes two clamping block parts 7, and then removes the movable clamping block 8. Then, the mounting pin 801 on the new movable clamping block 8 is aligned with the mounting groove 501 and inserted, so that the limiting plate 802 is attached to one end of the mounting block 5. Multiple positioning blocks 702 on the two mounting plates 701 are aligned with multiple positioning grooves 502 on the mounting block 5 and inserted. Then, multiple bolts 10 are passed through the two mounting plates 701 and tightened, so that the two mounting plates 701 move closer to each other and clamp the mounting block 5. Then, the two trapezoidal top blocks 703 clamp the clamping inclined surface 804 on the clamping block 803 through the inclined side, completing the replacement.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

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