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Chinese Journal of Engineering Design  2003, Vol. 10 Issue (2): 80-83    DOI:
    
Research on adaptive tracing measurement
methodology for freeform surface
 XIE   Jin, WANG   Wen, JU   Hua, PANG  Yuan-Yuan, CHEN  Zi-Chen
Institute of M odern Production Engineering,Zhejiang University,Hangzhou 310027,China
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Abstract  Laser probe has the advantages of non-contact and high precision in free form measurement and it is used frequently.But laser probe has a small linear measurement range,which makes it difficult to measure the surface with a high fluctuation.To solve this puzzle,this paper describes a tracing measurement methodology for laser probe. Through the methodology,laser probe can measure any height surface by adjudging its position up and down,and can adaptively choose tracing methods according to the curvature of surface.Measurement points can also distribute adaptively. Finally,a workpiece is measured through both constant step method and adaptive tracing method.The feasibility and efficiency are testified by the comparison of the results of the two methods. Adaptive tracing is a novel method for freeform surface measurement.

Key wordsfreeform surface      tracing measurement      adaptive      laser probe     
Published: 28 April 2003
Cite this article:

XIE Jin, WANG Wen, JU Hua, PANG Yuan-Yuan, CHEN Zi-Chen. Research on adaptive tracing measurement
methodology for freeform surface. Chinese Journal of Engineering Design, 2003, 10(2): 80-83.

URL:

https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2003/V10/I2/80


自由曲面的自适应跟踪测量方法研究

激光传感器在测量自由曲面中有着非接触、精度高等优点,其应用越来越广泛. 但是激光测头的线性测量
范围较小,难以测量起伏变化较大的曲面. 针对这一问题,提出了激光测头的跟踪测量方法,使激光测头随曲面的
高度变化作上下调整,从而可以测量任一表面起伏的曲面,且能根据当前曲面的曲率大小自适应选择跟踪方式,实
现测点的自适应分布.最后,对一个工件分别进行了等间距测量和自适应跟踪测量,并对两种方法的测量结果做了
比较,证明了自适应跟踪测量方法的可行性和有效性,为自由曲面的测量提供了一种新的方法.

关键词: 自由曲面,  跟踪测量,  自适应,  激光测头 
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