Novel gear machining tool

Abstract

The invention discloses a novel gear machining tool. The novel gear machining tool is integrally composed of a tool bit and a tool root. The tool bit is a working part. The tool root is a non-working part. The tool bit is composed of an evolvent part, an oblique line part, an arc part and a linear part, wherein the oblique line part is used for connecting the evolvent part and the arc part in a transitional mode, the inclination angle alpha of the oblique line part is 3-4 degrees, the range of the fillet radius of the arc part is 8-12 mm, and the linear part is located on the top surface of the tool bit. According to the novel gear machining tool, through the optimal design of the structure of the machining tool, the fillet radius of the arc part of the tool is increased, the strength of the tool is improved, and the service life of the tool is prolonged; the evolvent part and the arc part are in transition connection through the oblique line part so that an inflection point can be eliminated, stress concentration of the tool is avoided, and the problems of breakage and collision of the tool in the gear machining process are solved; and the novel gear machining tool has the characteristics of being high in quality and efficiency and low in consumption for gear machining.

Description

technical field [0001] The invention relates to the technical field of gear processing tools, in particular to a novel gear processing tool. Background technique [0002] The gear machining process is a profiling process, and the tool tooth profile design is an important basis for gear tooth profile machining. Gear cutters usually consist of two parts: the cutter head and the blade root, the blade head is the working part, and the blade root is the non-working part. Since the tooth profile of the gear is directly determined by the cutter, the structural design of the cutter head part of the cutter is particularly critical. However, the existing cutter head is usually composed of an involute part, a circular arc part and a straight line part. However, due to the smooth transition between the involute part and the circular arc part, it is easy to form an inflection point, resulting in stress concentration at the inflection point. , It is easy to produce sharp corners and sma...

AI Technical Summary

Problems solved by technology

However, the existing cutter head is usually composed of an involute part, a circular arc part and a straight line part. However, due to the smooth transition between the involute part and the circular arc part, it is easy to form an inflection point, resulting in stress concentration at the inflection point. , It is easy to produce sharp corners and small poplars, which leads to the formation of cracks on the tool during heat treatment and quenching. In severe cases, cracks and cracks will appear, and due to the existence of inflection points, the surface of the gear teeth will appear unsmooth and convex, resulting in serious wear and tear. The problem of poor meshing and unstable transmission, and the radius of the arc of the existing cutter head is small, resulting in defects such as poor cutting strength, easy to break, serious knife beating, and low processing efficiency

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