Trajectory Dependent Structural Vibration and Its Effects on Surface Generation
Abstract
The vibration of machine tool plays an important role in surface generation. However, the vibration characteristics is different for different machine tool structures and different machining path. This paper proposed a new method of structural sensitivity analysis to identify trajectory dependent structural vibration and its effect on surface generation in milling. The experimental and theoretical results verify that (i) Multimode low-frequency vibration of the sensitive structures (MLFVSS) directly determines the surface topography in milling; (ii) The sensitivity is different for different structures or the same structure at different modes; (iii) Structural vibration characteristics is related to the machining path, resulting in different influence of the structural vibration on surface generation at different position of the machining path. Finally, a surface topography prediction model was established based on the experimental results. This study is helpful to the optimization of machine tool structures and the selection of machining parameters.
- Publication:
-
Materials Science and Engineering Conference Series
- Pub Date:
- March 2019
- DOI:
- 10.1088/1757-899X/491/1/012009
- Bibcode:
- 2019MS&E..491a2009Y