自由曲面六轴联动砂带磨削机床试验

提出了一种以汽轮机叶片为典型对象的自由曲面高效精密加工方法,建立了基于砂带磨削原理的自由曲面六坐标联动磨削与抛光系统,研究了该机的关键技术如双摆动磨头、自由曲面磨削数控编程软件和冷缺排屑系统,在此基础上利用该机对叶片表面进行了六轴联动砂带磨削抛光试验验证,为确定合理的汽轮机叶片抛光工艺参数提供了依据。

Testing of a six-axis computer numberical control abrasive belt grinding machine based on free-form surfaces

A highly efficient precision grinding method was proposed for the development of typical free-form surfaces such as turbine blades.A six-axis simultaneous grinding and polishing machine was created.The machine can polish free-form surfaces with abrasive belt grinding technology by computer numberical control(CNC).The key techniques to develop this new grinding machine are presented in detail,including multiple axes rotary spindle grinding head,NC grinding computer aided software,cooling,a scrap removal device,and other features.The experiments of grinding and polishing turbine blades were performed based on different parameters.This research provided sufficient data to confirm reasonable belt grinding and polishing parameters.