Cutter for turning ultrahard material and cutter sharpening method thereof

Abstract

The invention belongs to the technical field of sharpening cutters and discloses a cutter for turning an ultrahard material and a cutter sharpening method thereof. A tool bit of the cutter comprises afront face, a major flank, a minor flank, a main cutting edge, a tool minor cutting edge, a tool nose and a transition edge. The cutter sharpening method comprises the steps that (1) a grinding wheelis used for grinding the major flank, the tool cutting edge angle is controlled to range from 75 degrees to 95 degrees, and the main rear angle is controlled to range from 15 degrees to 20 degrees; (2) the grinding wheel is used for grinding the minor flank, the tool minor cutting edge angle is controlled to range from 10 degrees to 20 degrees, and the end relief angle is controlled to range from15 degrees to 20 degrees; and (3) the grinding wheel is used for grinding the front face, the front angle is controlled to range from 20 degrees to 30 degrees, and the tool cutting edge inclination is controlled to range from 10 degrees to 15 degrees. According to the cutter for turning the ultrahard material and the cutter sharpening method, cutter abrasion can be reduced, the service life of the cutter is prolonged, the chip removal direction is controlled, and built-up edges are reduced, so that the surface quality of a turned product is improved, the stability of an ultrahard material turning process is guaranteed, meanwhile, the ultrahard material turning efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of sharpening tools, in particular to a tool for turning superhard materials and a sharpening method thereof. Background technique [0002] In the turning processing of superhard materials such as tungsten, due to the high hardness, high brittleness and large grain size of tungsten, it is easy to generate chip accumulation during the cutting process, and the peeling off of the chip accumulation leads to unstable processing technology and rough processing surface. The wear of the tool is reduced, and the time for regrinding the tool and resetting the tool is prolonged, which in turn leads to a decrease in processing efficiency. [0003] Figure 1a , Figure 1b and Figure 1c A conventional sharpening tool in the prior art is shown, where Figure 1a It is a schematic diagram of the structure of a conventional sharpening tool, Figure 1b It is a schematic diagram of the reference surface used to measure the ...

AI Technical Summary

Problems solved by technology

[0005] The sharpening tool of the prior art has the following disadvantages in the process of turning superhard materials such as tungsten: during the processing, the tool wears fast; the tool causes tool defects due to welding, and reduces the hardness; the welding tool due to welding stress Exist, limit the turning speed of the turning tool

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