A turning/milling insert for processing special-shaped parts of high-hardness steel

Abstract

The invention discloses a turning / milling insert for processing high-hardness steel special-shaped parts, which comprises a roughly regular heptagonal insert body; the insert body has an upper surface, a lower surface and side surfaces; the geometric center of the insert body is provided with a The fastening screw holes on the upper and lower surfaces; the intersection line between the upper surface and the side of the blade body constitutes the cutting portion of the blade, and the cutting portion includes a knife point at the vertex of a regular heptagon and a side of the regular heptagon The cutting edge is concave inward in an arc shape so that the cutting edge forms a fishtail-shaped cutting edge; the upper surface of the blade body extends inwardly along the fishtail-shaped cutting edge to form a fishtail-shaped rake face. The structure of the present invention can solve the problems of one-time post-fire profiling processing of special-shaped surfaces, the high hardness of the workpiece requires tool wear resistance, chipping resistance, high structural precision and good hard cutting performance, and solves the problem that the current tool cannot meet the requirements. Technical difficulties of comprehensive processing requirements under extreme conditions.

Description

Technical field [0001] The invention relates to the technical field of cutting tools, in particular to a turning / milling insert for processing high-hard steel special-shaped parts. Background technique [0002] With the continuous emergence of new materials, new processes and complex structures of workpieces, higher requirements have been placed on the performance of metal cutting tools. In order to reduce unnecessary costs, one-time processing, profiling processing and post-fire processing are increasingly favored by manufacturers. [0003] At present, the one-time post-fire profiling processing is mainly a new processing method proposed for the problem of high-efficiency processing of complex parts. One-time processing requires that the structural accuracy of the tool before the completion of the processing must meet the technical requirements, that is, good wear resistance and chipping resistance, long service life, and high surface accuracy; profiling processing requires good ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a turning / milling blade for processing special-shaped parts of high-hardness steel, which can solve the problem of profiling processing of special-shaped surfaces after one-time fire. Chipping, high structural precision and good hard cutting performance, as well as solving the technical problem that the current tool cannot meet the comprehensive processing requirements under extreme conditions

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