大导程滚珠螺母螺旋槽分层包络微细硬车削技术
2020-10-16
作者：后加树1，姚斌1，闫笃政2，郑奇2，李元斌2，刘万山1，何泽3
单位：1厦门大学；2陕西汉江机床有限公司；3成都邦普切削刀具股份有限公司
摘要：针对精密加工大导程滚珠螺母螺旋槽的技术难题，提出了分层包络法微细硬车削加工滚珠螺母螺旋槽方法，在平行螺母轴线刀杆上安装刀尖带圆弧的菱形可转位刀片，通过对法向截形等距偏移与坐标变换计算生成包络车削点，实现层层包络车削。以大导程滚珠螺母加工试验为例说明该方法可满足大导程滚珠螺母螺旋槽的加工精度要求，具有较大的技术应用价值。
关键词：大导程滚珠螺母；螺旋槽；包络法；微细硬车削
中图分类号：TG51；TH16文献标志码：ADOI：10.3969/j.issn.1000-7008.2020.03.008
Precision Turning Technology of Highlead Ballnut Spiral Groove
by Layered Envelope Method
Hou Jiashu，Yao Bin，Yan Duzheng，Zheng Qi，Li Yuanbin，Liu Wanshan，He Ze
Abstract:In order to solve the technical problem in the process of highlead ballnut grinding，the method of microhard turning the spiral groove by the layered envelope method is presented in this paper.A diamondshaped indexable insert with a circular arc at the tip of the parallel nut axis is mounted on the cutter shaft.The enveloping turning points are generated by normal section offset and coordinate transformation.The nut raceway is processed layer by layer based on the enveloping turning points.In the end，taking the processing of the highlead ballnut as an example.The results show that this method can meet the machining precision requirements of the highlead ballnut and have great value in practice.
Keywords:highlead ballnut；spiral groove;envelope method；microhard turning