Workpiece clamping device

Abstract

The utility model discloses a workpiece clamping device relates to clamping frock technical field, and specifically includes base, rotating mechanism, screw module and clamping mechanism, and rotating mechanism realizes screw module rotation through revolving stage, the slide rail of screw module is fixedly connected clamping mechanism through displacement sliding block, and clamping mechanism includes the first displacement frame and second displacement frame who can move on screw module, and the chuck for workpiece clamping is arranged on first displacement frame and second displacement frame, and at least one chuck is provided with the turnover mechanism and makes it rotate, turnover mechanism includes the rear end fixed with driven gear ring of carousel, and the side of driven gear ring is provided with driving motor, and the output of driving motor is installed with drive gear, and drive gear is engaged with driven gear ring. The utility model has realized workpiece clamping direction position adjustable, has solved the technical problem of the fixed workpiece clamping direction of existing welding etc.

Description

Technical Field

[0001] This utility model relates to the field of workpiece clamping fixture technology, specifically a workpiece clamping device. Background Technology

[0002] Workpiece clamping is a common auxiliary function in manufacturing. In particular, welding fixtures are industrial equipment used to assist welding processes. Welding fixtures mainly use clamps to fix the workpieces, reduce manual measurement errors, and ensure assembly accuracy. They are widely used in automobile manufacturing, aerospace, petrochemical and other fields.

[0003] Due to the varying shapes and requirements of welding workpieces, specific welding clamping fixtures are often required to meet specific workpiece shapes, thereby achieving welding positioning and operational needs and improving work efficiency. For example, in the welding of finned tube heat sinks, the round tube workpiece needs to be rotated simultaneously to complete the welding. However, finned tubes have spiral heat sinks and gear-shaped heat sinks, requiring different clamping devices for different products. This results in the limited adaptability of a single clamping device and a large space occupation and cost for the clamping device. To address this, a welding workpiece clamping device that can rotate to meet welding requirements at different angles is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a workpiece clamping device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a workpiece clamping device, including a base, on which a rotating mechanism, a lead screw module and a clamping mechanism are provided;

[0006] The rotating mechanism includes a turntable, through which the lead screw module is rotated;

[0007] The lead screw module includes a bracket and a slide rail, and the clamping mechanism is slidably connected to the slide rail via a displacement slider;

[0008] The clamping mechanism includes a first displacement frame and a second displacement frame that can move on the lead screw module. Both the first displacement frame and the second displacement frame are provided with chucks for clamping the workpiece, and at least one chuck is provided with a flipping mechanism that rotates it.

[0009] The flipping mechanism includes a turntable, a driven gear ring is fixed to the rear end of the turntable, a drive motor is provided on the side of the driven gear ring, a drive gear is installed at the output end of the drive motor, and the drive gear meshes with the driven gear ring.

[0010] Furthermore, the lead screw module includes a forward lead screw, one end of which is connected to a reverse lead screw via a coupling. A lead screw motor is also installed at one end of the forward lead screw. Both the forward and reverse lead screws are equipped with lead screw sliders. The coupling enables synchronous movement of the forward and reverse lead screws, improving clamping efficiency and adjusting positioning.

[0011] Furthermore, the slide rails of the lead screw module are arranged in two layers, upper and lower, to improve the fixing effect. The bottom of the first displacement frame and the second displacement frame are fixedly connected to the lead screw slider, and the lead screw slider moves on the forward lead screw and the reverse lead screw.

[0012] Furthermore, the rotating mechanism includes a fixed rotary motor, a gear mounted on the output end of the rotary motor, a rotating gear disk mounted on one side of the gear, the gear meshing with the rotating gear disk, a rotating platform mounted on the rotating gear disk, and the rotating platform being fixedly connected to the lead screw module.

[0013] Furthermore, the chuck is an electric three-jaw chuck, which can achieve clamping without affecting the rotation of the three-jaw chuck.

[0014] Furthermore, the first and second displacement frames are sleeve-type structures that are driven by an electric cylinder to extend and retract.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) In this utility model, by setting a rotating mechanism and a telescopic clamping mechanism, the workpiece can be adjusted at any angle in the horizontal and vertical directions after being clamped, which has good adaptability to welding and other operations, and can adjust the optimal welding direction according to the shape of different workpieces, thus optimizing the production layout.

[0017] (2) In this utility model, the clamping mechanism adopts an electric three-jaw chuck and a flipping mechanism to realize the flipping of the workpiece, which has good adaptability to workpieces that require double-sided operation.

[0018] (3) In this utility model, the positive and negative lead screw module design is adopted, which improves the clamping efficiency, enables rapid linkage, adapts to workpieces of different lengths, and has the function of positioning and locking.

[0019] (4) In this utility model, the combination of rotating mechanism, lead screw module and flipping mechanism simultaneously adapts to the welding of finned tube heat sink and spiral heat sink, improves the adaptability of equipment and saves space layout. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2This is a schematic diagram of the lead screw module structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the rotating mechanism structure of this utility model;

[0024] In the diagram: 1. Base; 2. Rotating mechanism; 201. Rotary motor; 202. Gear; 203. Rotary gear disk; 204. Rotary table; 3. Lead screw module; 301. Forward lead screw; 302. Coupling; 303. Reverse lead screw; 304. Lead screw slider; 305. Lead screw motor; 306. Bracket; 307. Slide rail; 308. Displacement slider; 4. Clamping mechanism; 401. First displacement frame; 402. Second displacement frame; 403. Chuck; 404. Tilting mechanism; 405. Turntable; 406. Driven gear ring; 407. Drive gear; 408. Drive motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figure 1 , Figure 4 To address the application needs of welding workpieces of different shapes, this utility model provides an embodiment of a workpiece clamping device, which includes a base 1 that is fixedly installed horizontally or vertically. A rotating mechanism 2 is fixedly connected to the base 1. The rotating mechanism 2 includes a rotating table 204, which is driven by a rotating gear 203. The gear of the rotating gear 203 meshes with the gear 202 of a rotating motor 201, which is mounted on the base 1.

[0027] Please see Figure 1 and Figure 2A lead screw module 3 is fixedly connected to a rotary table 204. An external support 306 is provided for the lead screw module 3. Slide rails 307 are distributed on the upper and lower sides of the support 306. A clamping mechanism 4 is fixedly connected to the slide rails 307 via displacement sliders 308. A forward lead screw 301 is located at the center line of the lead screw module 3, and a reverse lead screw 303 is symmetrically arranged on the other side. The forward and reverse lead screws 301 and 303 are connected by a coupling 302 to change the direction of rotation and achieve synchronous rotation. Lead screw sliders 304 are respectively provided on the forward and reverse lead screws 301 and 303, and the clamping mechanism 4 is fixedly connected to the sliders 304. A lead screw motor 305 is connected to one end of the forward lead screw 301 to drive the forward lead screw 301 to rotate, thereby moving the sliders 304 to allow the components of the clamping mechanism 4 to move towards each other and adjust to accommodate the length of the workpiece.

[0028] Please refer to Figure 1 and Figure 3 The clamping mechanism 4 is connected to a first displacement frame 401 and a second displacement frame 402 via a lead screw and slider 304. In one embodiment, the first displacement frame 401 is equipped with a flipping mechanism 404, which includes a drive motor 408 fixed to the first displacement frame. The drive gear 407 output by the drive motor 408 meshes with a driven gear ring 406, which fixes a turntable 405. Both the driven gear ring 406 and the turntable 405 are fixed to the first displacement frame 401 via a central rotating shaft. A chuck 403 is fixedly connected to the turntable 405. A chuck 403 is symmetrically mounted on the second displacement frame 402, achieving double-sided gripping and improving the stability of the flipping action. The chuck 403 is replaceable; one embodiment is an electric three-jaw chuck.

[0029] Importantly, the first displacement frame 401 and the second displacement frame 402 are telescopic rod mechanisms. With telescopic rods inside, for workpieces with large lateral and longitudinal lengths, when the clamping direction cannot be adjusted to adapt, the applicability can be increased by extending the first displacement frame 401 and the second displacement frame 402. This effectively solves the needs of welding dissimilar parts.

[0030] This invention provides a specific application implementation method for welding heat dissipation pipes. The heat dissipation pipes are divided into finned heat dissipation pipes and spiral heat dissipation pipes. Therefore, existing clamping fixtures are not very adaptable, requiring various specialized clamping equipment. For clamping finned heat dissipation pipes, the round pipe is clamped by a chuck 403 on the first displacement frame 401 and the second displacement frame 402. At this time, the lead screw module 3 is in a horizontal position. After the fins are placed on the round pipe for positioning and welding, the chuck 403 is slowly rotated by the drive motor 408 to achieve circumferential welding. For spiral heat dissipation pipes, the chuck 403 clamps the workpiece and rotates slowly, simultaneously coordinating with the displacement of the welding torch to achieve complete welding.

[0031] In addition, for welding other irregularly shaped workpieces, after the chuck 403 is used to clamp the main part, rotating the chuck and extending the first displacement frame 401 and the second displacement frame 402 will put the workpiece in the best welding position. If necessary, the lead screw module 3 can also be rotated to change horizontal welding to vertical welding, thereby improving the adaptability of welding clamping.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A workpiece clamping device, comprising a base (1), characterized in that: The base (1) is provided with a rotating mechanism (2), a lead screw module (3) and a clamping mechanism (4); The rotating mechanism (2) includes a rotating table (204), through which the lead screw module (3) is rotated; The lead screw module (3) includes a bracket (306) and a slide rail (307), and the clamping mechanism (4) is slidably connected to the slide rail (307) via a displacement slider (308); The clamping mechanism (4) includes a first displacement frame (401) and a second displacement frame (402) that can move on the lead screw module (3). Both the first displacement frame (401) and the second displacement frame (402) are provided with chucks (403) for clamping workpieces. At least one chuck (403) is provided with a flipping mechanism (404) for rotating it. The flipping mechanism (404) includes a turntable (405), a driven gear ring (406) is fixed at the rear end of the turntable (405), a drive motor (408) is provided on the side of the driven gear ring (406), a drive gear (407) is installed at the output end of the drive motor (408), and the drive gear (407) meshes with the driven gear ring (406).

2. The workpiece clamping device according to claim 1, characterized in that: The lead screw module (3) includes a forward lead screw (301), a reverse lead screw (303) is installed at one end of the forward lead screw (301) via a coupling (302), a lead screw motor (305) is installed at one end of the forward lead screw (301), and a lead screw slider (304) is installed on both the forward lead screw (301) and the reverse lead screw (303).

3. The workpiece clamping device according to claim 2, characterized in that: The slide rail (307) of the lead screw module (3) is arranged in two layers, upper and lower. The bottom of the first displacement frame (401) and the second displacement frame (402) are fixedly connected to the lead screw slider (304), and move on the forward lead screw (301) and the reverse lead screw (303) through the lead screw slider (304).

4. The workpiece clamping device according to claim 1, characterized in that: The rotating mechanism (2) includes a fixed rotating motor (201), a gear (202) is installed at the output end of the rotating motor (201), a rotating gear disk (203) is installed on one side of the gear (202), the gear (202) meshes with the rotating gear disk (203), a rotating table (204) is installed on the rotating gear disk (203), and the rotating table (204) is fixedly connected to the lead screw module (3).

5. The workpiece clamping device according to claim 1, characterized in that: The chuck (403) is an electric three-jaw chuck.

6. The workpiece clamping device according to claim 1, characterized in that: The first displacement frame (401) and the second displacement frame (402) are sleeve-type structures that are driven by an electric cylinder to extend and retract.

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