Small-diameter double-line inner trapezoidal thread machining method

Abstract

The invention relates to the field of machining, in particular to a small-diameter double-line inner trapezoidal thread machining method. The small-diameter double-line inner trapezoidal thread machining method comprises the following steps of firstly turning a bottom hole according to the size accuracy requirement, then using a trapezoidal threading tool to complete turning of two spiral grooves, making two straight lines perpendicular to the axis at the bottoms of turned tooth grooves, utilizing left-right tool assisting of a small sliding plate between the wide bottoms of the groove and using a middle sliding plate to control tooth depth to perform turning as long as two tool points of the threading tool uses the bottom widths of the grooves as the standard, and accordingly completing rough turning. Due to the fact that a tool bit is thin and small, it is appropriate that a straight feeding method and a left-right tool assisting method are adopted to perform four-layer turning according to the tooth depth and the bottom widths of the grooves. By means of the small-diameter double-line inner trapezoidal thread machining method, the pressure of a turning tool can be decreased, chip removal can be smooth, an edge breaking phenomenon is also avoided, the rigidity of the turning tool is improved, vibration of the turning tool is prevented, the machining quality of parts can be ensured, and production efficiency can be improved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a processing method for a small-diameter double-wire internal trapezoidal thread. Background technique [0002] When processing small-diameter multi-line internal threads on ordinary lathes, due to the limitation of the hole diameter, the tool bar of the turning tool cannot be too thick, and due to the limitation of the tooth shape, the part of the tool head is also small, so turning, measuring and chip removal are more difficult. The multi-line internal trapezoidal thread will also increase the processing difficulty of the workpiece due to the large thread lead angle. Contents of the invention [0003] In order to solve the above problems, the present invention provides a tool that can reduce the pressure of the turning tool, make chip removal smooth, avoid the phenomenon of knife sticking, strengthen the rigidity of the turning tool, prevent the vibration of the turning t...

AI Technical Summary

Problems solved by technology

[0002] When processing small-diameter multi-line internal threads on ordinary lathes, due to the limitation of the hole diameter, the tool bar of the turning tool cannot be too thick, and due to the limitation of the tooth shape, the part of the tool head is also small, so turning, measuring and chip removal are more difficult. The multi-line internal trapezoidal thread will also increase the processing difficulty of the workpiece due to the large thread lead angle