Machining method of coarse pitch threads

Abstract

The invention relates to a machining method of threads, in particular to the machining method of coarse pitch threads. The machining method comprises the following steps of building a right-angle trapezoidal thread finish machining outline and rough machining outline mathematical models; designing cutter paths according to the physical dimension of a designed non-standard cutter; building a numerical control macroprogram by applying the rough machining outline and cutter path mathematical models, selecting appropriate cutting parameters according to tool nose fillet radius R0.8 and combining with actual machining equipment and building a numerical control macroprogram by applying thread right-angle side finish machining outline and cutter path mathematical models, mathematical models right-angle sides by repeatedly feeding, and adopting sample plate and feeler gauge detection until required accuracy is achieved; and adjusting numerical control macroprogram contents, using the sample plate and feeler gauge to detect in a matched mode and completing machining of right-angle trapezoidal thread slope side according to machining results. The machining method is unique in process method, capable of effectively guaranteeing thread accuracy of forms and positions and surface smoothness, improving processing efficiency and shortening machining period.

Description

Technical field [0001] The invention relates to a thread processing technology, in particular to a processing method of a large pitch thread. Background technique [0002] With the continuous improvement of the functional requirements of large-scale mechanical transmission structures, higher requirements have been put forward for the shape and position accuracy of transmission parts. Large trapezoids, especially right-angled trapezoids, are one of the typical representatives. Traditional thread processing using dies, taps, and forming turning tools can no longer meet the needs of production. The traditional machining method is difficult to guarantee the accuracy of the thread profile, the machining efficiency is low, the machining cycle is long, and the defects that are prone to waste products are more dependent on the machining tool. Summary of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art and provide a method for proces...

AI Technical Summary

Problems solved by technology

Traditional thread processing using dies, taps, and forming turning tools can no longer meet the needs of production

The traditional processing method is difficult to guarantee the accuracy of the thread profile, the processing efficiency is low, the processing cycle is long, and the defects that are prone to waste products are relatively dependent on the processing tools.