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| Research on Straightness Detection System for Shaft Parts |
| XU Hongtu 1 , ZHANG Qi 1 , LUO Wei 1 , TIAN Tiantai 1 , LI Wenhao 1 , WANG Jucun 2 |
1. Xi’an Jiaotong University, Xi’an 710049, China ;
2. AECC South Industy Co., Ltd., Zhuzhou 412002, China |
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Abstract By analyzing the advantages and disadvantages of the existing straightness detection methods of shaft parts, a new non-contact straightness measurement method is proposed. In this method, several laser displacement sensors are used to discretize the points on several generatrix of shaft parts. The center coordinate of each section is calculated based on the least square method, and the actual axis of the parts is fitted to judge the straightness error of the parts. Based on the above method, a straightness detection system was designed and developed. Through measurement accuracy research and error analysis, the measurement accuracy of the system was within 0.1mm/m. The experimental results show that the system has the advantages of wide application range, high measurement accuracy, fast measurement speed and high repeat accuracy.
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2021, 
