Precision measurement of scroll profiles
Scroll compressors are widely used in air conditioner compressor, vacuum pump and so on. Profile measurement of a scroll compressor is important for improving compression efficiency. This paper describes the involute profile measurement of a scroll compressor by using r-θmeasurement system for the manufacturing line. Involute profile measurement system consists of X-Z-θstage and contact type scanning probe. Scanning probe draws Archimedean spiral locus by X-θstage. Output of scanning probe includes profile error and difference of Archimedean spiral and involute. To confirm that influence of coordinate system error, simulation was carried out. It was confirmed that profile measurement error was a one tenth or less compared with the rotation setting error of work piece. From the simulation result of Y-directional offset between rotation center of θstage and center of probe sphere, to achieve the required accuracy of profile measurement, it is necessary to reduce or measure the probe alignment error to under the required accuracy order. Fixed scroll outside-involute profile error is measured by developed measurement system. The difference from CMM result is seen in the center part. It is caused by residual Y directional alignment error of scanning probe. Excluding the center part, measurement result is corresponding to CMM result.
measurement profile scroll compressor speed contact probe involute
Y. Arai A. Inada W. Gao
Nano-metrology and control laboratory, Department of Nanomechanics, Tohoku University,Aramaki Aza Ao Nano-metrology and control laboratory, Department of Nanomechanics, Tohoku University, Aramaki Aza A
国际会议
第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology
沈阳
英文
1-6
2008-09-15（万方平台首次上网日期，不代表论文的发表时间）