Active Design Methodology of Positioning Precision of Machine Tools

DOI

10.2991/icmse-17.2017.65How to use a DOI?

Keywords

Machine tool, positioning precision, design methodology

Abstract

Specification of machine precision is an important part of the design specifications and is essential to machine tools. Conventionally, the precision specification is generally conducted based on empirical experiences of machine tool manufactures. This may results in a failed design for insufficient precision specification, or a cost-ineffective design for over specification that will unnecessarily increase manufacturing cost and difficulty. To give a precise estimation of the cost-effective precision specification, an innovative machine tools positioning precision active design methodology is proposed to determine the cost-effective precision specification of machine tools derived from the machining precision requirements of the work-piece. The methodology consists of six steps: (1) characterization and selection of formation methods of workpiece features, (2) determination of motion axes and layout of machine tools, (3) modeling of workpiece surface formation in terms of the machining principle of the machine tool, (4) machining error modeling based on the machining model by considering geometric and axial positioning errors of the machine tool, (5) machining precision modeling based on the machining error model in terms of the geometric and axial positioning precision of the machine tool, and sensitivity analysis based on the machining precision model to determined the weights of the machine tool precision indices to machining precision, and finally (6) allocating the machining precision into machine tool geometric and axial positioning precision.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Yanwei Xu
AU  - Tancheng Xie
PY  - 2017/04
DA  - 2017/04
TI  - Active Design Methodology of Positioning Precision of Machine Tools
BT  - Proceedings of the 2017 7th International Conference on Manufacturing Science and Engineering (ICMSE 2017)
PB  - Atlantis Press
SP  - 350
EP  - 354
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmse-17.2017.65
DO  - 10.2991/icmse-17.2017.65
ID  - Xu2017/04
ER  -