A processing device for non-uniform passivation hard rotary milling tool

Abstract

The invention relates to a hard turning and milling machining tool with an unevenly passivated cutting edge and a machining device of the hard turning and milling machining tool. The hard turning and milling machining tool with the unevenly passivated cutting edge comprises a blade and a hard alloy matrix. The blade is in a biarc joint shape and is arranged at the two ends of the hard alloy matrix in a braze welding manner. The unevenly passivated cutting edge is arranged at the end of the blade and located at the end of the hard alloy matrix. The radius of the cutting edge is the maximum at the middle position of the cutting edge, and the cutting edge radii from the middle position to the two ends of the cutting edge are gradually decreased and are symmetric about the middle position. The passivation length Sgamma of the front tool face of the middle position of the cutting edge is larger than the passivation length Salpha of the rear tool face of the middle position of the cutting edge. The passivation length S'gamma of the front tool faces of the two ends of the cutting edge is smaller than the passivation length S'alpha of the rear tool faces of the two ends of the cutting edge. According to the hard turning and milling machining tool with the unevenly passivated cutting edge, the passivated cutting edge with overall suitability can be selected according to the characteristic of uneven loading of the cutting edge of the hard turning and milling machining tool, early damage of the local part of the cutting edge is effectively avoided, the service life of the tool is prolonged, the machining cost is reduced, and the machining quality is improved.

Description

technical field [0001] The invention belongs to the field of cutting processing, and in particular relates to a non-uniform passivation hard rotary milling tool. Background technique [0002] After the metal cutting tool is sharpened, there is no sharp edge in the strict sense, and there will be a certain transition area between the front and flank surfaces, which is the so-called cutting edge. Due to the inhomogeneity of the abrasive grain of the grinding wheel and the tool material itself, microscopic defects will inevitably occur on the cutting edge of the tool. These tiny defects are generally unrecognizable with the naked eye, but they are easy to expand during the cutting process, which accelerates tool failure and affects the cutting performance of the tool. Edge passivation can effectively eliminate microscopic defects, strengthen the edge and prolong the service life of the tool. [0003] When passivating the cutting edge, the selection of passivation parameters h...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing hard rotary milling tool is uniformly passivated and easy to be partially damaged, and to provide a non-uniform passivated hard rotary milling tool to improve the cutting performance of the tool and improve the resistance of the tool. Local breakage capability for extended tool life

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