Sensitivity analysis of relationship between error motions and machined shape errors in five-axis machining center - Peripheral milling using square-end mill as test case
| Autor: | Dragan Milutinovic, Ryuta Sato, Yukitoshi Ihara, Keiichi Shirase, Zongze Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0209 industrial biotechnology
Frustum business.product_category Computer science Coordinate system ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION General Engineering 02 engineering and technology Surface coordinate system Five-axis machine tools Machine tool 020303 mechanical engineering & transports 020901 industrial engineering & automation 0203 mechanical engineering Machining Control theory End mill Trajectory Square-end milling Point (geometry) Sensitivity (control systems) Error motion business Sensitivity analysis ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | Precision Engineering. 60:28-41 |
| ISSN: | 0141-6359 |
| Popis: | Five-axis machine tools, consisting of three translational axes and two rotary axes, are increasingly being used for complex surface machining. This paper proposes a new sensitivity analysis method to elucidate the relationship between the tool trajectory error and the error motions of the feed axes. Based on the free-curve trajectory during simultaneous five-axis machining, a surface coordinate system is created for each tool center point, to define the tool trajectory and the trajectory errors. Then, a novel sensitivity coefficient is defined to investigate the relationship between the trajectory error and the error motions. It is shown that the proposed sensitivity analysis method can successfully determine whether the trajectory is sensitive to the error motions, based on sensitivity analyses performed during conic frustum machining and S-shaped machining tests. Moreover, the sensitivity analysis method can also predict the effects of the error motion source, such as the reversal errors. In the future, we intend to study other types of machining processes, such as ball-end milling, as well. |
| Databáze: | OpenAIRE |
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