基于工业机器人白车身柔性坐标测量系统研究

Flexible Coordinate Measurement System Based on Industrial Robot for Car Body-in-White

针对汽车白车身柔性在线测量的应用,设计了基于工业机器人柔性坐标测量系统。对系统的工作过程进行了详细描述,对标定原理和现场标定技术进行了研究。实验表明,该系统的测量精度一般,但重复测量精度较高,可达到±0.3 MM,能够满足在线监控白车身加工的尺寸变化的精度要求;该系统成本低、测量无死角、柔性好以及标定方法简单,能适应生产线多车型检测的需要。

The flexible coordinate measurement system based on industrial robot is designed to meet the needs of flexible online measurement for car body-in-white（BIW）. This measurement system is low cost,with no blind angle and good flexibility. It can measure all types of BIW at one product line. In this paper,the working process,calibration theory and on-field calibration technique of the measurement system are described in detail. The calibration technique is simple and easy to carry out in the working site. Experiments prove that the absolute precision of the measurement system is moderate, but the repeatability is better than ± 0.3 mm. It can meet the precision need for measuring the size change of BIW.