Grinding method and design method of grinding path for gradual chamfering tool

Abstract

The invention discloses a grinding method and a grinding trajectory design method of a gradually changing chamfering tool, which discretizes the gradually changing chamfering structure and divides it into multiple grindings, and changes the grinding inclination angle and envelope wedge angle each time It can effectively complete the grinding of the chamfering structure of the gradual chamfering tool; add a grinding, the grinding track used is the same as the first grinding track, and the grinding inclination angle is slightly larger than the grinding inclination angle used in the first grinding, so that Avoid the formation of overcut area in the fixed parameter chamfering area during the grinding process, thereby eliminating the impact on the fixed parameter chamfering area; use passivation machine to passivate the chamfered surface of the blade to reduce the grinding process. The effect of grinding scratches on the chamfered face of the blade improves the finish of the chamfered face of the blade.

Description

technical field [0001] The invention relates to the technical field of tool grinding, in particular to a grinding method and a grinding track design method of a gradually changing chamfering tool. Background technique [0002] In the field of high-speed hard cutting, commonly used tools include coated carbide, ceramics, and PCBN tools, among which PCBN tools are the most widely used. PCBN tools have high strength and hardness, good wear resistance, high thermal stability and good chemical stability, and are suitable for cutting materials with high hardness. At the same time, the PCBN tool material is brittle, and negative chamfers are usually ground on the cutting edge to improve the strength of the cutting edge, avoid abnormal damage to the cutting edge, and prolong the tool life. However, the negative chamfer structure will cause chips to accumulate, resulting in cutting Increased resistance, increased cutting temperature, aggravated tool wear and failure, and is not cond...

AI Technical Summary

Problems solved by technology

[0003] Although the gradual chamfering tool has many advantages, the structure of the chamfering part of the gradual chamfering tool is small and the size is microscopic, which cannot be realized by forming grinding and other methods

At present, there is no clear domestic manufacturer that can grind PCBN tools with gradient chamfering

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