T-Spline Based Unifying Registration Procedure for Free-Form Surface Workpieces in Intelligent CMM

Autor: Zhenhua Han, Yingmo Wang, Xinhui Ma, Shugui Liu, Xiaodong Zhang, Guoxiong Zhang
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Applied Sciences, Vol 7, Iss 10, p 1092 (2017)
Druh dokumentu: article
ISSN: 2076-3417
DOI: 10.3390/app7101092
Popis: With the development of the modern manufacturing industry, the free-form surface is widely used in various fields, and the automatic detection of a free-form surface is an important function of future intelligent three-coordinate measuring machines (CMMs). To improve the intelligence of CMMs, a new visual system is designed based on the characteristics of CMMs. A unified model of the free-form surface is proposed based on T-splines. A discretization method of the T-spline surface formula model is proposed. Under this discretization, the position and orientation of the workpiece would be recognized by point cloud registration. A high accuracy evaluation method is proposed between the measured point cloud and the T-spline surface formula. The experimental results demonstrate that the proposed method has the potential to realize the automatic detection of different free-form surfaces and improve the intelligence of CMMs.
Databáze: Directory of Open Access Journals