Portable multi-purpose quick self-locking fixture

Abstract

The invention relates to a portable multi-purpose quick self-locking fixture. The fixture comprises a clamping device, wherein the clamping device adopts a wedge clamping mechanism, the wedge clamping mechanism comprises a wedge column (11) and rollers (12), a piston rod mounting screw hole is formed in the back end surface of the wedge column (11), and the rollers (12) are arranged on two sides of the wedge column (11). Compared with the prior art, the fixture has the beneficial effects as follows: clamping self-locking is controlled by the aid of a single air source, and the fixture can clamp a to-be-machined part firmly and realize quick self-locking in an instant and can also release the to-be-machined part in an instant after machining is completed, so that the mounting and dismounting efficiency is substantially improved; the fixture is high in universality and applicable to machining equipment such as machining centers, gang drills, drilling machines, milling machines, special machines and the like; the fixture is small in shape and portable, an air cylinder can be used as a handle when the self-locking fixture is required to be moved on a workbench, thus quick movement is realized, and then machining of multiple to-be-machined planes or machining in multiple steps such as surface reaming, tapping, hole drilling, hole reaming and the like is realized.

Description

technical field [0001] The invention relates to a machine tool clamp, in particular to a portable multi-purpose fast self-locking clamp. Background technique [0002] The Chinese utility model patent No. ZL201520485952.7 discloses a double-platen fixture, which includes a platen, a remote rod, a cylinder, a thrust rod, a clamp body, a supporting plate and a piston rod. The fixture is provided with two pressure plates, and the pressure plate is supported by two rockers of equal length, forming a parallelogram mechanism with the clamp body; two piston rods are installed at both ends of the cylinder, and the piston rod is connected to the pressure plate. The cylinder is connected with the clamp body through a thrust rod. When the piston rod of the cylinder moves up and down, the pressure plate will always be parallel to the horizontal base surface of the clamp body to complete the forward-tightening-loosen-backward action, which can be adjusted according to the workpiece. Shap...

AI Technical Summary

Problems solved by technology

However, on the one hand, this utility model does not have a self-locking structure, and it is easy to cause unstable or misaligned clamping positions during the processing of complex parts or parts with large cutting forces, which greatly affects the normal processing and processing quality of the processed parts, and is also easy to Cause unqualified products or waste products; on the other hand, this utility model is not provided with cylindrical positioning pins and diamond-shaped positioning pins on the positioning element, so the positioning accuracy of the processed parts cannot be guaranteed, and the above-mentioned technical defects will also exist

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