超精密切削用车床微量刀架系统研究

Research on Micropositioning Tool Post of Lathe for Ultraprecision Machining

给出了一种新颖的微量车床刀架系统，该系统由PZT（piezolectrictransducer）驱动的X－Z二维微进给工作台和Y向的微调对刀装置组成。微量工作台的两个方向均采用三个弹性元件的非对称式新型结构，这种新结构使刀具安装面位于工作台的一个角落，方便了刀具的安装。Y向微调机构利用差分螺纹调节原理使粗精调集为一体，结构紧凑，调节方便。

A new micropositioning tool post system for lathe is introduced. The system is consisted of 2 - D microfeed (X-Z) table driven by PZT (piezoelectric transducer) and a fine tool adjusting device (Y). The micropositioning table is desisned with new non symmetric structure of 3 elastic elements in both directions of X and Z. The structure is designed for the tool setting surface located at corner of the table that make tool setting up convenient. The fine adjusting mechanism in Y is integrated rough and fine adjusting by using differential thread adjusting principle. It features conpact and convenient for adjusting.