Zero point positioning mechanism of processing machine

Abstract

A zero-point positioning mechanism of a processing machine is applied to a clamping jig of processing equipment and comprises a fixed bed and a locking jig. The fixed bed is used for assembling the locking jig, and the locking jig is used for clamping a processed object; and the locking jig is provided with a gas-oil hydraulic cylinder. A pushing unit of the gas-oil hydraulic cylinder is used for driving a sliding assembly to move to the position the processed object, and due to the fact that the sliding assembly is hidden below the jig plate, processing interference can be avoided; and besides, the pushing directions of pushing pieces are located between two sliding pieces and form a 45-degree angle, so that the sliding pieces are synchronously pushed to the 45-degree angle when being pushed, and the mechanism has the advantages of being average in pushing force, labor-saving, synchronous and average in positioning and capable of enabling the sliding pieces to move smoothly.

Description

technical field [0001] The invention relates to a clamping device used in a processing machine, in particular to a zero point positioning mechanism of the processing machine. Background technique [0002] In the field of automatic processing operations, the most troublesome thing for operators is the convenience and stability of the processed objects. Although manual loading and unloading is very convenient, there is a problem of uneven locking force when positioning the processed objects manually. Insufficient or excessive locking force will have an impact. For example, insufficient locking force may sometimes cause the workpiece to break away from the fixture, or excessive locking force may cause deformation of the workpiece. Therefore, most of the clamping fixtures have now moved toward Fixtures using stable media such as air pressure and oil pressure. [0003] In addition, some processed objects not only pay attention to the accurate processing position, but also requir...

AI Technical Summary

Problems solved by technology

[0002] In the field of automatic processing operations, the most troublesome thing for operators is the convenience and stability of the processed objects. Although manual loading and unloading is very convenient, there is a problem of uneven locking force when positioning the processed objects manually. Insufficient or excessive locking force will have an impact. For example, insufficient locking force may sometimes cause the workpiece to break away from the fixture, or excessive locking force may cause deformation of the workpiece. Therefore, most of the clamping fixtures have now moved toward Fixtures using stable media such as air pressure and oil pressure

[0003] In addition, some processed objects not only pay attention to the accurate processing position, but also require high processing precision; the current common practice is to set at least one movable positioning unit on the jig, so that the processed objects can be assembled on the jig for processing, but the movable The positioning unit must be removed before cutting. If the positioning unit is not removed, it may cause processing interference or mechanical confusion.

[0004] Furthermore, it takes a lot of time to correct the position of the jig and the positioning unit through the above structure, which greatly increases the manufacturing cost of the industry.

[0005] It is worth mentioning that some companies have designed a zero-point positioning fixture based on the concept of the indexing plate. The indexing plate is equipped with at least four rods that can be pushed and an active push rod. , the active push rod rotates and then links these rods to produce actions to clamp the workpiece; but the problem with this type of product is: only one push rod is easy to make the linked rods move unevenly, making the clamping There is a problem of stagnation and unsmoothness in the holding action. When stagnation often occurs, it may be that the inner wall of the assembly rod has been worn, which also causes doubts about the inaccurate processing position.

Images