A new approach of surfaces registration considering form errors for precise assembly
ISSN: 0144-5154
Article publication date: 14 October 2020
Issue publication date: 3 December 2020
Abstract
Purpose
The modern manufacturing industry has put forward higher requirements for the assembly accuracy of components with the development of the industrial technology. For precision assembly, the traditional assembly process study based on tolerance has had difficulty in meeting these requirements. Hence, the distribution of the form errors must be considered. The registration between the two mating surfaces with form errors determines the parts’ assembly position, and is the basis for the prediction and control of the assembly accuracy. This study aims to provide a new surfaces registration method which takes form errors into consideration.
Design/methodology/approach
This study presents a new registration approach based on the minimum potential energy. A unique set of contact points on mating surfaces that meet the actual conditions can be obtained and the spatial position of the assembled part is calculated.
Findings
The experimental results show that the calculated values are in good agreement with the experimental values. Furthermore, the root mean square error is within 2%, which proves the validity and accuracy of the approach.
Originality/value
This paper provides an effective and new method for precision assembly which takes form errors into consideration. The method can give the optimal solution of the contact points, which is more consistent with the actual assembly situation and provides a basis for predicting assembly accuracy.
Keywords
Acknowledgements
This work was supported by The Natural Science Foundation of China [grant numbers 51375054 and U153720042].
The authors thank Prof. Yann Ledoux at Bordeaux University for his help and support.
Citation
Zhang, Q., Jin, X., Liu, Z., Zhang, Z., Fang, Y., Zhang, Z. and Ledoux, Y. (2020), "A new approach of surfaces registration considering form errors for precise assembly", Assembly Automation, Vol. 40 No. 6, pp. 789-800. https://doi.org/10.1108/AA-01-2018-004
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited