| ASSESSING THE DYNAMIC ERRORS OF COORDINATE MEASURING MACHINES |
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| 作者姓名： | Dong Chensong Zhang Guoxiong Mu Yuhai |
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| 作者单位： | Dong Chensong Zhang Guoxiong Mu Yuhai College of Precision Instrument and Optoelectronic Engineering，Tianjin University |
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| 基金项目： | 21世纪天津市科委青年科学基金，， |
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| 摘 要： | ０ＩＮＴＲＯＤＵＣＴＩＯＮＣｏｏｒｄｉｎａｔｅｍｅａｓｕｒｉｎｇｍａｃｈｉｎｅｓ（ＣＭＭｓ）ａｒｅｗｉｄｅｌｙｕｓｅｄｉｎｔｈｅｄｅｖｅｌｏｐｉｎｇｍｏｄｅｒｎｍａｎｕｆａｃｔｕｒｉｎｇｉｎｄｕｓｔｒｙ．Ｉｎｍａｎｙｃａｓｅｓ，ｆａｓｔｐｒｏｄｕｃ...
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| 关 键 词： | Coordinate measuring machine Dynamic error Laser interferometer Inductive position sensor |
ASSESSING THE DYNAMIC ERRORS OF COORDINATE MEASURING MACHINES |
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| Dong Chensong,Zhang Guoxiong,Mu Yuhai.ASSESSING THE DYNAMIC ERRORS OF COORDINATE MEASURING MACHINES[J].Chinese Journal of Mechanical Engineering,1998,11(4):305-311. |
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| Authors: | Dong Chensong Zhang Guoxiong Mu Yuhai College of Precision Instrument and Optoelectronic Engineering Tianjin University |
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| Abstract: | The main factors affecting the dynamic errors of coordinate measuring machines are analyzed. It is pointed out that there are two main contributors to the dynamic errors: One is the rotation of the elements around the joints connected with air bearings and the other is the bending of the elements caused by the dynamic inertial forces. A method for obtaining the displacement errors at the probe position from dynamic rotational errors is presented. The dynamic rotational errors are measured with inductive position sensors and a laser interferometer. The theoretical and experimental results both show that during the process of fast probing, due to the dynamic inertial forces, there are not only large rotation of the elements around the joints connected with air bearings but also large bending of the weak elements themselves. |
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| Keywords: | Coordinate measuring machine Dynamic error Laser interferometer Inductive position sensor |
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