CN115007896A

CN115007896A - Adjustable-center T-shaped three-jaw clamp

Info

Publication number: CN115007896A
Application number: CN202210718147.9A
Authority: CN
Inventors: 张悦芳; 金太平; 王卓彧; 石晓东; 田龙飞; 李颖杰; 李琦; 张光阴; 杨海军; 刘婧; 邹晓伟; 刘有维
Original assignee: Dalian Riqian Motor Co ltd; North Weijiamao Coal Power Co Ltd
Current assignee: Dalian Riqian Motor Co ltd; North Weijiamao Coal Power Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-09-06

Abstract

The invention discloses a center-adjustable T-shaped three-jaw clamp which comprises a vertical rail and a transverse rail with size marks, wherein the vertical rail is vertically connected with the transverse rail, 2 locking blocks are connected in the transverse rail in a sliding manner, and each locking block is provided with a positioning claw fixed through a locking bolt; the vertical rail is internally provided with a lead screw, the lead screw is connected with a locking linkage screw block and a clamping claw, the locking linkage screw block is fixed on one side of the clamping claw, and a feeding mechanism connected with the lead screw is arranged outside the end part of the vertical rail. Compared with the similar clamps such as a three-jaw chuck, a four-jaw chuck, a bench vice and the like, the clamping device can obviously improve the clamping efficiency, is suitable for clamping various part sizes, and provides higher repositioning precision and stable support. The structure is simple, the cost and the failure rate are low, and the manufacture is convenient. Particularly, when the device is used on a machine tool with a platform, the working hours consumed by repeated alignment can be greatly reduced.

Description

Adjustable-center T-shaped three-jaw clamp

Technical Field

The invention relates to the technical field of auxiliary clamps for machining, in particular to a T-shaped three-jaw clamp capable of adjusting center.

Background

In the machining industry, various clamps are widely used. The main auxiliary clamps capable of being quickly positioned and clamped are three-jaw chucks, four-jaw chucks, bench vices and the like. When various machine tools perform mechanical processing on products, the three-jaw chuck can quickly center and clamp at three points, and is simple and convenient to use; the four-jaw chuck can adjust the alignment center of the irregular part, and the clamping torque is large; the bench vice can be fast clamped by single jaw movement, has large clamping moment in the clamping direction, and is flexible and convenient to use. When a disc-shaped part with a larger diameter is processed by using machine tool equipment with a platform, three claws of the three-claw chuck need to act simultaneously, so that a larger and more complex mechanism is needed, the cost is higher, and the precision and the stability are reduced after the clamping range of the clamping jaws is expanded; the four-jaw chuck is clamped by four points, two jaws need to be loosened each time, and the center of the movable part needs to be aligned again when the four-jaw chuck is clamped again; the bench vice has weak clamping force in the non-clamping direction, the size of a clamping part is small, and the positioning center needs to be aligned again. Therefore, the conventional clamp has the problems of high cost, insufficient precision, waste of working hours and the like in actual use.

Disclosure of Invention

The invention aims to provide an adjustable-center T-shaped three-jaw clamp which can quickly determine the center of a movable part and flexibly adjust the positioning center of the movable part, realize quick clamping through single-jaw movement and simplify the moving structure of clamping jaws.

In order to achieve the purpose, the technical scheme provided by the application is as follows: an adjustable-center T-shaped three-jaw clamp comprises a vertical rail and a transverse rail with size marks, wherein the vertical rail is vertically connected with the transverse rail, 2 locking blocks are connected in the transverse rail in a sliding mode, and each locking block is provided with a positioning claw fixed through a locking bolt; the vertical rail is internally provided with a lead screw, the lead screw is connected with a locking linkage screw block and a clamping claw, the locking linkage screw block is fixed on one side of the clamping claw, and a feeding mechanism connected with the lead screw is arranged outside the end part of the vertical rail.

Furthermore, a positioning clamping table is formed between the locking bolt cap and the top of the positioning claw.

Furthermore, a clamping table is arranged at the top of the clamping claw and on one side of the transverse rail.

Furthermore, the positioning clamping table and the clamping table are the same in height and used for placing parts to be machined.

Furthermore, the longitudinal rail and the transverse rail are fixedly connected through a detachable bolt.

Furthermore, the feeding mechanism is a hand wheel, a servo motor or an air cylinder.

The technical scheme adopted by the invention has the advantages that: compared with the similar clamps such as a three-jaw chuck, a four-jaw chuck, a bench vice and the like, the clamping device can obviously improve the clamping efficiency, is suitable for clamping various part sizes, and provides higher repositioning precision and stable support. The structure is simple, the cost and the failure rate are low, and the manufacture is convenient. Particularly, when the device is used on a machine tool with a platform, the working hours consumed by repeated alignment can be greatly reduced.

Drawings

FIG. 1 is a schematic structural view of a T-shaped three-jaw clamp with adjustable center;

wherein: 1. a longitudinal rail; 2. a transverse rail; 3. a positioning pawl; 4. a clamping jaw; 5. locking the linkage screw block; 6. a locking block; 7. a feeding mechanism; 8. a lead screw; 9. locking the bolt; 10. positioning the clamping table; 11. and clamping the clamping table.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application, i.e., the embodiments described are only a few examples, and not all examples, of the present application. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

Example 1

As shown in fig. 1, the present embodiment provides an adjustable T-shaped three-jaw clamp, which includes a vertical rail and a transverse rail with size marks, the longitudinal rail is vertically connected to the transverse rail, 2 locking blocks are slidably connected to the transverse rail, each locking block is provided with a positioning jaw fixed by a locking bolt, and the positioning jaw can be controlled to move by using a manual, electric or pneumatic driving manner as required; a screw rod is arranged in the longitudinal rail, a locking linkage screw block and a clamping claw are connected to the screw rod, the locking linkage screw block is fixed on one side of the clamping claw, and a feeding mechanism connected with the screw rod is arranged outside the end part of the longitudinal rail; the feeding mechanism is one of a hand wheel, a servo motor and a cylinder.

The use method of the clamp comprises the following steps:

the longitudinal rail 1 and the transverse rail 2 processed by the numerical control machine tool are fixed together through a detachable bolt, and then are integrally installed on a machine tool platform or other machine tools needing the clamp, and the longitudinal rail 1 and the transverse rail 2 are arranged on the same plane;

two locking blocks are placed in the transverse rail, a locking bolt 9 penetrates through the positioning claws 3 and is screwed into the locking blocks 6, the two positioning claws 3 are moved to required positions according to the size marked on the transverse rail 2 according to the size of a part, the locking bolt is screwed after the positioning claws are moved in place, and at the moment, the positioning clamping table is formed by the positioning claws and a locking bolt cap;

the clamping jaw 4 and the locking linkage screw block 5 are fixed into a whole, the clamping jaw is screwed in the screw rod 8 and then is installed on the longitudinal rail 1, the height of a clamping table on the clamping jaw is the same as that of a positioning table, and a part is stably placed on the clamping table and the positioning table;

the feed mechanism 7 drives the screw rod 8 to rotate to realize the movement of the clamping claw 4, and the linkage screw block is fastened and locked after a part is clamped;

the machine tool can be positioned according to a preset positioning center or an alignment part positioning center; and (3) after centering, checking the size after the first workpiece is machined, loosening the clamping jaw after the first workpiece is qualified, replacing the next part to be machined, and directly clamping the part by using the clamping jaw 4 without re-aligning the positioning center of the part at the moment.

The invention provides two stable positioning points of a part mainly through the free movement of the two positioning claws 3 on the transverse rail 2, and can be suitable for the clamping of parts with various diameters, and then the clamping claws 4 clamp the parts. Three points constitute positioning and quick clamping, and the clamping jaw 4 can provide clamping force by using a manual, electric or pneumatic driving mode and the like. The clamp does not need to be finely positioned during installation, and the same parts can be repeatedly and rapidly clamped by once centering after installation.

The foregoing description of specific exemplary embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. An adjustable-center T-shaped three-jaw clamp is characterized by comprising a vertical rail and a transverse rail, wherein the vertical rail and the transverse rail are vertically connected, 2 locking blocks are connected in the transverse rail in a sliding mode, and each locking block is provided with a positioning jaw fixed through a locking bolt; the vertical rail is internally provided with a lead screw, the lead screw is connected with a locking linkage screw block and a clamping claw, the locking linkage screw block is fixed on one side of the clamping claw, and a feeding mechanism connected with the lead screw is arranged outside the end part of the vertical rail.

2. The three-jaw adjustable T-clamp of claim 1 wherein a detent is formed between the lock bolt cap and the top of the detent.

3. The adjustable T-shaped three-jaw clamp according to claim 1, wherein a clamping table is provided on the top of the clamping jaw and on one side of the cross rail.

4. The adjustable T-shaped three-jaw clamp as claimed in claim 2 or 3, wherein the positioning clamping table and the clamping table are the same in height and used for placing a part to be machined.

5. The adjustable T-clamp as claimed in claim 1, wherein the longitudinal and transverse rails are fixedly connected by removable bolts.

6. The adjustable T-shaped three-jaw clamp as claimed in claim 1, wherein the feed mechanism is a hand wheel or a servo motor or a cylinder.