Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)
- Volume 2 Issue 3
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- Pages.56-61
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- 2003
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- 1598-6721(pISSN)
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- 2288-0771(eISSN)
A Study on the On-machine Profile Measurement of Large Aspheric Form using Capasitive Sensor
정전용량센서를 이용한 대구경 비구면 형상의 기상측정에 관한 연구
Abstract
This paper described about on-machine profile measurement of aspheric surfaces using contact probing technique in ultra precision machine. A contact probe has been designed as a sensing device to obtain measuring resolutions in nanometer regime using a circle leaf spring mechanism and a capacitive-type sensor. The contact probe which is installed on the z-axis is In touch with the aspheric objects which is fixed on the spindle of the diamond turning machine(DTM) during the measuring procedure. The x, z-axis motions of the machine are monitored by a set of two orthogonal plane mirror type laser interferometers. As a results, the developed contact probe on-machine measurement system showed 10 nanometers repeatability with a
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