Fixed-starting-point rectangular internal thread manufacturing method

Abstract

The invention provides a fixed-starting-point rectangular internal thread manufacturing method, and belongs to the field of machining. The method comprises the following steps of clamping; determininga starting point of a thread line, calculating a tool setting value, and aligning a part plane; setting a tool, processing a thread, and measuring by using a special measuring tool after processingis finished; and calculating a tool setting value for guaranteeing a starting point size through a fixed-starting-point rectangular internal thread tool setting formula, determining a starting point position, and then carrying out thread machining. By using the machining method, the starting point position is firstly determined on a common lathe or a numerical control lathe, and then the thread ismachined so that the thread starting point meets a preset requirement; and rectangular threads in complex non-revolving body parts can be machined, and the method is suitable for single-piece or batch production.

Description

technical field [0001] The invention belongs to the field of machining, and in particular relates to a method for manufacturing a fixed-point rectangular internal thread. Background technique [0002] The existing manufacturing method of fixed-point rectangular internal thread is: 1. Regardless of the thread starting position, process according to the ordinary thread processing method. 2. Use a special measuring tool for measuring the starting point position to measure the actual position of the thread starting point for processing. According to the measured position, remove the threaded end face to ensure the starting point size. This processing method belongs to the trial cutting method. Its advantage is that the thread processing method is simple and is suitable for simple rotary parts; however, it is necessary to use a special measuring tool to measure the thread starting point multiple times and process the thread end face repeatedly, which is not suitable for mass pro...

AI Technical Summary

Problems solved by technology

This processing method belongs to the trial cutting method. Its advantage is that the thread processing method is simple and is suitable for simple rotary parts; however, it is necessary to use a special measuring tool to measure the thread starting point multiple times and process the thread end face repeatedly, which is not suitable for mass production. ; For complex non-revolving parts, the starting point of the thread and other characteristic parts are on the same reference plane. When determining the starting point of the thread in the existing manufacturing method, the dimensions of other characteristic parts need to be guaranteed at the same time. If the dimensional accuracy of other characteristic parts is high, it will Difficulty in processing parts or failure to guarantee dimensional accuracy of other parts

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