A method for machining threads using cubic boron nitride internal cooling thread milling cutter

Abstract

The invention discloses a method for machining a thread through a cubic boron internal cold thread milling cutter. According to requirements of a part drawing, a mark pen is used for making a hole center mark at the center position of an internal thread hole of a part to be machined for positioning a machined position, and then the mark pen is used for pointing out a correction point at the edge position of the part to be machined. The method for machining the thread through the cubic boron internal cold thread milling cutter has the beneficial effects that the problem that skewing is caused during machining of an internal thread part to be machined in the prior art is solved, a light ray of a laser lamp just covers the correction point of the part to be machined and exceeds the edge of the part to be machined by 0.2cm-0.22cm to determine that the position of the part to be machined is not changed, therefore, the problem of machined hole diameter bending is eliminated, cooling oil is sprayed in the whole internal thread machining process, and machining precision is further improved through metal filing removing treatment.

Description

technical field The invention relates to the field of thread processing, in particular to a thread processing method using a cubic boron nitride internal cooling thread milling cutter. Background technique Milling is performed on a thread milling machine with a disc cutter or a comb cutter. Disc milling cutters are mainly used for milling trapezoidal external threads on workpieces such as screw rods and worms. The comb-shaped milling cutter is used for milling internal and external ordinary threads and taper threads. Since it is milled with a multi-edged milling cutter and the length of its working part is greater than the length of the processed thread, the workpiece only needs to be rotated for 1.25 to 1.5 turns to process. Finished, the productivity is very high, the pitch accuracy of thread milling can generally reach 8-9 grades, and the surface roughness is R5-0.63 microns. This method is suitable for batch production of threaded workpieces with general precision or ro...

AI Technical Summary

Problems solved by technology

When the existing internal thread is being processed, the workpiece to be processed is easily fixed and unstable due to pressure or rotation, and the position of the workpiece to be processed is shifted, resulting in bending of the inner diameter of the processing, and during the processing , the generated heat and metal shavings will affect the machining of the internal thread and reduce the machining accuracy of the internal thread