Equiangular spiral line partition variable parameter control precision machining method

Abstract

The invention discloses an equiangular spiral line partition variable parameter control precision machining method, and belongs to the field of numerical control precision machining. The method comprises the steps of analyzing an equiangular spiral line geometric model, determining the relation between the actual machining speed and machining time of an equiangular spiral line under constant technological parameters, on the basis of the equiangular spiral line machining error generating mechanism, building a mathematical model of the machining error, determining the rule of influences of equiangular spiral line geometrical characteristics and the NC program-set machining feed speed on the machining error, building the relation between the machining feed speed and the equiangular spiral line geometrical characteristics, conducting reasonable dividing on the equiangular spiral line machining area, and distributing corresponding machining feed speed to divided areas for machining. According to the partition variable parameter machining method of geometrical characteristic partition set machining feed speed, high-precision, high-quality and high-efficiency machining of the equiangular spiral line can be achieved.

Description

technical field [0001] The invention belongs to the field of numerical control precision machining, in particular to a partition variable parameter control precision machining method of an equiangular helix. Background technique [0002] With the continuous improvement of the performance of high-end equipment, the structure of some key parts in high-end equipment has become more complex and requires higher precision. Some of the parts with local geometric abrupt changes have a wide range of applications in aerospace, energy power and turbomachinery industries, such as microstrip helical antennas, integral impellers with small shunt blades, etc. In view of the fact that such parts are mostly made of difficult-to-machine materials and special structures, the processing is difficult, or although they can be processed, the efficiency is extremely low, which cannot meet the needs of the rapid development of high-end equipment. With the rapid development of CNC machining technolo...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of the prior art, and to invent a precision machining method of equiangular helix partition variable parameter control, which adopts the partition variable participatory processing technology to formulate the machining feed speed of machine tool according to the geometric characteristics partition, and solves the problem of equiangular helix. Problems such as low processing quality and low processing efficiency of helical wire

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