内锥面刃磨机实现麻花钻螺旋面刃磨的研究与仿真

摘要

According to the working principle of inner cone grinding machine, the differential of plate units is increased to replace the traditional variable lead.And two step motors are applied to drive respectively ball screw spindle and nut relative rotation and synthetize any thread pitch.Thus the method to achieve adjustable lead helicoid grinding is put forward as well as the method for grinding the helicoid within inner cone grinding machine,and then the formula of relief angle and oblique of chisel edge after grinding is derived.The author designs a virtual prototype of inner cone grinding machine with the Pro/E Software to realize helicoid grinding by motion simulation in its mechanism,which results verify that the mechanism after improving can realize the helicoid grinding.The mechanism is conducive to the realization of digital control of mechanical grinding.%根据内锥面刃磨机的工作原理,增加双层拖板的差动来代替传统的变导程,利用两步进电机分别带动丝杠主轴与螺母相对转动,合成任意螺距.实现导程可调的新螺旋面刃磨的方法,由此实现了在内锥面刃磨机中进行螺旋面刃磨的方法,并推导了刃磨后后角与横刃斜角的公式.然后基于Pro/E软件设计了机构的虚拟样机,并以双层拖板的分析为例对机构实现螺旋面刃磨而进行运动仿真,结果验证了改进后的机构可以实现螺旋面刃磨.此机构有利于实现数字化控制的机械刃磨.