关键词: 关节臂式坐标测量机, 误差分析, 运动学模型, 仿真

Abstract: The coordinate system and error model of an articulated arm coordinate measuring machine (AACMM) was established, and based on the error model the error-simulation system was developed with Matlab. Error distributions in the joint space were obtained from the error-simulation system, from which the length errors of joints, arms and the probe were transferred to the measuring result without change, and not influenced by the posture of the AACMM; however, the transfer of joint angles and joint reverse angles errors were influenced greatly by the joint order and posture. Some suggestions on the choice of angle sensors and bearings, machining accuracy of joint parts and measuring posture were presented based on the analysis results.

Key words: articulated arm coordinate measuring machine, error analyzing, kinematics model, simulation