机床几何精度的在线激光测量与快速校准技术

Laser accuracy measurement and calibration technique for machine tools

为了改善机床的几何精度,达到高精度的三维空间定位,必须对它的垂直度误差与直线度误差进行测量与校正.传统的激光测量方法花费时间长,成本高.由ISO及ASME提出并由波音公司等应用的体对角线测量方法虽然速度快、成本低,但不能有效分离误差源.现介绍一种由美国光动公司发明的基于体对角线分步(或矢量)激光测量方法,该方法速度快、准确度高、成本低,可以分离误差源并对其提供补偿与校正.

To improve the volumetric accuracy of machine tools, it is necessary that squareness and straightness errors of machine tools are measured, compensated and calibrated. Traditional laser measurement method takes long time and high cost. ＂Body-diagonal＂ measurement presented by ISO and ASME, that is being used by the Boeing and others which gives accurate volumetric measurements for most equipment and featurs rapidness and low cost, but the error roots are not separated. This paper introduces a sequential-step diagonal measurement technique, which is invented by Optodyne Co. The measurement method can separate error roots and generate a compensation table that, in turn, can be used to calibrate the machine.