TY - JOUR
T1 - A Novel Pretravel Error Compensation Strategy for Five-Axis On-Machine Measurement With a Touch-Trigger Probe
AU - Zhuang, Qixin
AU - Wan, Neng
AU - Wang, Dao
AU - Guo, Yanheng
AU - Chang, Zhiyong
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2023
Y1 - 2023
N2 - Touch-trigger probes (TTPs) have been commonly utilized in on-machine measurement (OMM) by virtue of their low cost and high repeatability. The pretravel error (PTE) compensation of the probe is one of the critical issues in improving OMM precision. The majority of existing studies on PTE compensation in five-axis OMM adopt the same strategy as in three-axis OMM. Thus, the discrepancies between the two measurement processes and PTE compensation principles are ignored, which results in poor compensation accuracy for the five-axis measured results. In this article, a novel PTE compensation strategy is presented to accurately compensate for the five-axis OMM results. Due to the limitations of the PTE map formed by the calibrated positions on the standard sphere for application in five-axis measurement, a PTE map represented by the touch positions on the stylus tip is developed. As a result, the exact mapping relationships between the touch positions on the stylus tip and the PTEs in five-axis OMM can be constructed. Then, the calculations of the PTE compensation component (PTECC) in three-axis OMM and five-axis OMM are discussed and compared. Specifically, the positioning deviations of rotary axes are also considered in the proposed strategy to compensate for their influence on the measured results during the five-axis measurement. Finally, impeller inspection tests are performed to validate the effectiveness of the proposed compensation strategy for five-axis OMM, and more than 20% inspection precision improvement is observed.
AB - Touch-trigger probes (TTPs) have been commonly utilized in on-machine measurement (OMM) by virtue of their low cost and high repeatability. The pretravel error (PTE) compensation of the probe is one of the critical issues in improving OMM precision. The majority of existing studies on PTE compensation in five-axis OMM adopt the same strategy as in three-axis OMM. Thus, the discrepancies between the two measurement processes and PTE compensation principles are ignored, which results in poor compensation accuracy for the five-axis measured results. In this article, a novel PTE compensation strategy is presented to accurately compensate for the five-axis OMM results. Due to the limitations of the PTE map formed by the calibrated positions on the standard sphere for application in five-axis measurement, a PTE map represented by the touch positions on the stylus tip is developed. As a result, the exact mapping relationships between the touch positions on the stylus tip and the PTEs in five-axis OMM can be constructed. Then, the calculations of the PTE compensation component (PTECC) in three-axis OMM and five-axis OMM are discussed and compared. Specifically, the positioning deviations of rotary axes are also considered in the proposed strategy to compensate for their influence on the measured results during the five-axis measurement. Finally, impeller inspection tests are performed to validate the effectiveness of the proposed compensation strategy for five-axis OMM, and more than 20% inspection precision improvement is observed.
KW - Calibration
KW - five-axis machine tool (MT)
KW - on-machine measurement (OMM)
KW - pretravel error (PTE)
KW - touch-trigger probe (TTP)
UR - http://www.scopus.com/inward/record.url?scp=85164788398&partnerID=8YFLogxK
U2 - 10.1109/TIM.2023.3295457
DO - 10.1109/TIM.2023.3295457
M3 - 文章
AN - SCOPUS:85164788398
SN - 0018-9456
VL - 72
JO - IEEE Transactions on Instrumentation and Measurement
JF - IEEE Transactions on Instrumentation and Measurement
M1 - 1007311
ER -