CALIBRATION OF A CMM USING A LASER TRACKING SYSTEM
Abstract
A new calibration approach of a coordinate measuring machine (CMM) using a laser tracking system is proposed. According to the conventional approach of the laser tracking system, trilateration principle is mainly adapted. Therefore one retroreflector and four laser trackers are required. Though this approach is capable of attaining high accuracy measurement, measuring volume is likely to become smaller due to physical limitations for middle size CMM. Consequentially, we need new approach, which uses the least laser trackers in numbers. In this paper, effective calibration strategy to estimate 21 kinematic parameters of CMM’s axes is described. Additionally to confirm the validity of the proposed approach, the parameters estimation using a ball plate was conducted in parallel. The estimation results by the laser tracker and the ball plate showed good agreement.
Event details
- Event
- XVII IMEKO World Congress
- Place
- Dubrovnik, CROATIA
- Time
- 22 June 2003 - 28 June 2003
- Website
- http://www.hmd.hr/imeko/