Device and method for carrying out grinding type electric discharge machining on self-repairing tool electrode

Abstract

The invention discloses a device and a method for carrying out grinding type electric discharge machining on a self-repairing tool electrode. The device mainly comprises a tool electrode and a metal block, wherein the tool electrode comprises a metal matrix and an abrasive particle layer which is fixedly adhered to the surface of the metal matrix through conducting abrasive particles; the tool electrode can rotate along own axis and can move along the surface of a workpiece; the metal block is tightly pressed on the abrasive particle layer of the tool electrode; during use, the tool electrode in rotating is used for grinding the metal block, chippings generated during a grinding process can be adhered to the abrasive particle layer of the tool electrode so as to form a metal adhesion layer, electric discharge machining can be carried out by utilizing the metal adhesion layer, loss of the metal adhesion layer can be caused by a spark effect during a machining process, but the abraded adhesion layer can be replenished and rebuilt through grinding the metal block again by the tool electrode, so that the geometric shape of the tool electrode can be restored in time, the service life of the tool electrode is prolonged, the machining accuracy is increased, and the machining cost is reduced.

Description

technical field [0001] The invention relates to the technical field of mechanical processing equipment, in particular to a self-repairing tool electrode grinding type electric discharge machining device and method. Background technique [0002] Grinding belongs to finishing in mechanical processing, which has the characteristics of less cutting amount and high processing precision. The surface after grinding is often an important surface in mechanical parts. These surfaces often have strict requirements on processing accuracy and processing quality. [0003] The traditional grinding process is to use a higher hardness object as a tool to cut a softer object, and remove the excess material on the surface of the workpiece to be processed by extrusion, so that the workpiece can reach the specified geometric shape, dimensional accuracy and Surface quality processing methods. With the development of science and technology, materials with excellent performance are used in many ...

AI Technical Summary

Problems solved by technology

Although it has the advantages of no cathode loss, no macro cutting force, suitable for processing various difficult-to-cut materials and thin-walled parts, high processing efficiency, and good surface quality during processing, its localization is not easy to control, and it is prone to miscellaneous Scattering corrosion is not conducive to ensuring the machining accuracy. EDM is to use standard-shaped electrodes to perform spark discharge machining on the workpiece, so as to remove the metal in the area to be processed, so that the workpiece can reach the specified geometric shape, dimensional accuracy and surface quality. processing method

Although this method can process conductive materials with any hardness, because the process is electrical discharge machining, the electrode itself will be damaged while machining the workpiece, which will undoubtedly greatly affect the machining accuracy and quality. Therefore, how to provide a method for The processing of superhard materials has the following advantages: the grinding method with high processing precision, long service life and low processing cost has become an important technical problem to be solved urgently by those skilled in the art

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