Error compensation for CMM touch trigger probes

Autor:	Ted Hopp, M. Levenson, Steven D. Phillips, M. McClain, X. Zhang, Bruce R. Borchardt, Keith R. Eberhardt, W. Tyler Estler, Yin-Lin Shen, C. Witzgall
Rok vydání:	1996
Předmět:	Accuracy and precision Engineering business.industry Acoustics General Engineering Kinematics Coordinate-measuring machine Metrology Optics Dimensional metrology Ball (bearing) Stylus Error detection and correction business
Zdroj:	Precision Engineering. 19:85-97
ISSN:	0141-6359
DOI:	10.1016/s0141-6359(96)00040-2
Popis:	We present the analysis of a simple mechanical model of a common type of kinematic seat touch trigger probe widely used on modern coordinate measuring machines (CMMs). The model provides a quantitative description of the pretravel variation or “probe-lobing” characteristics that limit the use of such probes for high-accuracy dimensional measurements. We include the effects of stylus bending and the frictional interaction between the stylus ball and the part surface. The model is restricted to probes with simple straight styli, and we demonstrate significant error reduction both for vertically and horizontally oriented styli. In the latter case, gravitational forces are shown to play an important role in probe triggering and pretravel variation. Extensions to arbitrary orientations are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::71277fa3caa91553260cce2cfea9564b https://doi.org/10.1016/s0141-6359(96)00040-2 Zobrazit plný text záznamu Full Text from ScienceDirect