| Issue |
MATEC Web Conf.
Volume 104, 2017
2017 2nd International Conference on Mechanical, Manufacturing, Modeling and Mechatronics (IC4M 2017) – 2017 2nd International Conference on Design, Engineering and Science (ICDES 2017)
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|---|---|---|
| Article Number | 02012 | |
| Number of page(s) | 8 | |
| Section | Chapter 2: Engineering Simulation, Modeling and Mechatronics | |
| DOI | https://doi.org/10.1051/matecconf/201710402012 | |
| Published online | 14 April 2017 | |
Modeling and Simulation on Errors of Feed Unit by Considering Change of Force Bearing Point
1 Advanced Manufacturing technology of the Key Laboratory of Beijing Municipality College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124, China
2 Engineering Training Center, Inner Mongolia University of Science and Technology, Baotou, 014010, China
a Corresponding author: zhangwei2009035@163.com
The linear feed unit is a type of precision linear motion component that is widely used in computer numerical control (CNC) machine tools. The contact stiffness and error influences the performance of the feed unit directly. Thus, investigating contact stiffness and error is important in optimizing the design and improving the performance of the linear feed unit. In this study, the contact mechanics and the deformation of the roller between the roller and rail are analyzed. Calculation model of the contact stiffness and error based on the Hertz theory and multi-body kinematics are established and the change of the contact angle is also considered. Errors and the contact stiffness curve of five directions and the changes of the slope of the stiffness curve after the load increases to a certain size are obtained. The Motion precision errors of The roller linear feed unit are analyzed. The effectiveness of the proposed models on contact stiffness and error is verified through simulation on a specialized test system of the linear feed unit
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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