A Grinding Wheel Grinding Method for Parallel Shaft Grinding Internal Threads with Large Length-to-Diameter Ratio

Abstract

The invention relates to a grinding method of internal threads, in particular to a grinding wheel grinding method for parallel shaft grinding of large length-diameter ratio internal threads. The grinding wheel grinding method aims to solve the problems that further processing cannot be carried out since a grinding wheel rod collides with the top part of a threaded hole due to the large length-diameter ratio of a long nut, a grinding wheel interferes with internal threads when parallel shaft type grinding processing is adopted, and the interference size is large when a grinding wheel with largediameter is selected because the grinding deepening distance of the long nut is great. The grinding wheel grinding method is implemented by the steps of: step 1, preparation before grinding, which isimplemented by preparing a thread grinding machine, a rhomboid grinding wheel and a nut processing blank; step 2, determining an initial shape and diameter size of the grinding wheel; step 3, calculating an interference distance of each cross section of the grinding wheel; step 4, fitting a final shape curve of the grinding wheel; step 5, and processing the grinding wheel. The grinding wheel grinding method is used in the field of internal thread processing.

Description

technical field [0001] The invention relates to a grinding method of an internal thread, in particular to a grinding wheel grinding method for parallel axis grinding of an internal thread with a large length-to-diameter ratio, and belongs to the field of internal thread processing. Background technique [0002] In aerospace technology, with the development of electric servo linear technology, the requirements for planetary roller screws are getting higher and higher. The planetary roller screw is required to have the advantages of high axial load capacity, strong impact resistance, high speed, and long life, which puts forward higher precision requirements for the long nut. The internal thread processing of ordinary nuts generally needs to be ground with a certain angle between the central axis of the grinding wheel and the central axis of the nut, so as to ensure that there is no interference between the grinding wheel and the nut. This is generally suitable for nuts with a...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the long nut has a relatively large long diameter and the grinding wheel rod collides with the top of the threaded hole, resulting in inability to in-depth processing, the parallel axis grinding process is adopted, the grinding wheel and the internal thread will interfere, and the grinding depth of the long nut is relatively long. Larger diameter grinding wheel is used to solve the problem of large interference size. In order to ensure the accuracy and rigidity requirements, a grinding wheel grinding method for parallel axis grinding of internal threads with large length-to-diameter ratio is provided.

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