The form error estimation under various machining conditions is an essential step in the assessment of product surface quality generated in machining processes. Coordinate measuring machines (CMMs) are widely used to measure complicated surface form error. However, considering measurement cost, only a few measurement points are collected offline by a CMM for a part surface. Therefore, spatial statistics is adopted to interpolate more points for more accurate form error estimation. It is of great significance to decrease the deviation between the interpolated height value and the real one. Compared to univariate spatial statistics, only concerning spatial correlation of height value, this paper presents a method based on multivariate spatial statistics, co-Kriging (CK), to estimate surface form error not only concerning spatial correlation but also concerning the influence of machining conditions. This method can reconstruct a more accurate part surface and make the estimation deviation smaller. It characterizes the spatial correlation of machining errors by variogram and cross-variogram, and it is implemented on one of the common features: flatness error. Simulated datasets as well as actual CMM data are applied to demonstrate the improvement achieved by the proposed multivariate spatial statistics method over the univariate method and other interpolation methods.
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April 2016
Research-Article
Co-Kriging Method for Form Error Estimation Incorporating Condition Variable Measurements
Shichang Du,
Shichang Du
State Key Lab of Mechanical System
and Vibration,
Shanghai Jiaotong University,
Shanghai 200240, China;
and Vibration,
Shanghai Jiaotong University,
Shanghai 200240, China;
Department of Industrial Engineering
and Management,
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200240, China
and Management,
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200240, China
Search for other works by this author on:
Lan Fei
Lan Fei
Department of Industrial Engineering
and Management,
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200240, China
and Management,
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200240, China
Search for other works by this author on:
Shichang Du
State Key Lab of Mechanical System
and Vibration,
Shanghai Jiaotong University,
Shanghai 200240, China;
and Vibration,
Shanghai Jiaotong University,
Shanghai 200240, China;
Department of Industrial Engineering
and Management,
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200240, China
and Management,
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200240, China
Lan Fei
Department of Industrial Engineering
and Management,
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200240, China
and Management,
School of Mechanical Engineering,
Shanghai Jiaotong University,
Shanghai 200240, China
1Corresponding author.
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received January 16, 2015; final manuscript received August 24, 2015; published online October 27, 2015. Assoc. Editor: Xiaoping Qian.
J. Manuf. Sci. Eng. Apr 2016, 138(4): 041003 (16 pages)
Published Online: October 27, 2015
Article history
Received:
January 16, 2015
Revised:
August 24, 2015
Citation
Du, S., and Fei, L. (October 27, 2015). "Co-Kriging Method for Form Error Estimation Incorporating Condition Variable Measurements." ASME. J. Manuf. Sci. Eng. April 2016; 138(4): 041003. https://doi.org/10.1115/1.4031550
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