Analysis of slider motion error on 3-PUU parallel coordinate measuring maching????(Open Access)

作者：Hu, Penghao; Zhang, Jiankun; Ma, Xiaoqing; Fei, Yetai

来源：Jixie Gongcheng Xuebao/Journal of Mechanical Engineering, 2015, 51(18): 1-6.

DOI：10.3901/JME.2015.18.001

• Abbe errors
• Accuracy calibration
• Calibration accuracy
• Dual frequency laser interferometer
• Motion straightness
• Parallel coordinates
• Parallel mechanisms
• Theoretical calculations

Sliders motion error is the key error source of 3-PUU parallel coordinate measuring maching (CMM), which must be corrected or compensated carefully. The influence of sliders motion error on ball hinge centre position and linear grating reading are discussed and evaluated qualitatively, then the error model including slider linear motion error is established, slider motion straightness error data of 3-PUU CMM are captured by dual frequency laser interferometer. Through theoretical calculation, the contribution of sliders motion error on the instrument total error is derived and provided quantitatively with obtained experimental data, which paved the way for error correction. The work will be very useful for the following instrument accuracy calibration. Especially, it will improve the calibration accuracy on the parallel mechanism structure parameters.

• 出版日期2015
• 单位合肥工业大学