Shaving cutter profile modifying method based on involute key point

Abstract

The invention discloses a shaving cutter profile modifying method based on an involute key point. The method comprises the steps of determining key points in a gear tooth form to be profile-modified, and obtaining the developed length of each key point and the drum-shaped size between a tooth-formed inclined angle and the adjacent key point; calculating vertical coordinates and horizontal coordinates of the key points of a shaving cutter to be profile-modified; determining the profile-modified length, the tooth-formed inclined angle and the profile-modified drum-shaped size between each two adjacent key points; and finally using a shaving cutter grinding machine tool for polishing the shaving cutter. According to the method, profile modifying parameters can be calculated aiming at the practical situations of the shaving cutter, a correct part in the shaving cutter is effectively remained, and only part of meshed teeth to be profile-modified needs to be profile-modified, so that the profile modifying efficiency and the accurate rate of the shaving cutter are improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to a method for modifying the shape of a gear shaving cutter based on key points of an involute. Background technique [0002] The traditional shaving and shaping method is based on the personal experience of the grinder, which has problems such as low efficiency, irregularity, and difficulty in inheritance; and there are two difficulties in the shaping of the shaving cutter. The first is the actual use of involute on the shaving cutter. The determination of the starting point and the end point of the line; the second is the determination of the transition point of each segment interval of the tooth surface of the shaving cutter. [0003] At present, the methods of dealing with these two difficulties are basically the same at home and abroad. For the first difficulty, the starting point and end point of the modification are given in the sharpening parameter table. The...

AI Technical Summary

Problems solved by technology

[0002] The traditional shaving and shaping method is based on the personal experience of the grinder, which has problems such as low efficiency, irregularity, and difficulty in inheritance; and there are two difficulties in the shaping of the shaving cutter. The first is the actual use of involute on the shaving cutter. Determination of the starting point and end point of the line; the second is the determination of the transition point of each segment interval of the tooth surface of the shaving cutter

[0003] At present, the methods of dealing with these two difficulties are basically the same at home and abroad. For the first difficulty, the starting point and end point of the modification are given in the sharpening parameter table. These values ​​are determined according to the design, and the design is often based on rolling Theoretical numerical calculations such as the difference in shaving, but in actual processing, due to the manufacturing errors of hob lobes and edge trimming, changes in process dimensions such as workpiece tooth thickness and shaving amount, and the influence of factors such as bending deformation of shaving cutter teeth , the positions of the start and end points will change, resulting in incorrect sharpening parameter tables

As for the second problem, there has been no good solution at home and abroad. They all repair the tooth shape of the shaving cutter according to the actual tooth shape after the trial machining of the shaving cutter. There is a high probability that multiple grindings will be required, which wastes time and resources. very serious

Images