A tool path patching strategy around singular point in 5-axis ball-end milling
| Autor: | Christophe Tournier, Sylvain Lavernhe, Laureen Grandguillaume |
|---|---|
| Přispěvatelé: | Laboratoire Universitaire de Recherche en Production Automatisée (LURPA), École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11), Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan) |
| Rok vydání: | 2016 |
| Předmět: |
0209 industrial biotechnology
Mathematical optimization business.product_category Strategy and Management 02 engineering and technology Management Science and Operations Research Singular point of a curve Third derivative Industrial and Manufacturing Engineering [SPI]Engineering Sciences [physics] 020901 industrial engineering & automation Singularity 0203 mechanical engineering Machining Control theory inverse kinematical transformation Mathematics 5-axis machining Collision singularity Machine tool Jerk 020303 mechanical engineering & transports Ball (bearing) business jerk tool path computation |
| Zdroj: | International Journal of Production Research International Journal of Production Research, Taylor & Francis, 2016, 54 (24), pp.7480-7490. ⟨10.1080/00207543.2016.1196835⟩ |
| ISSN: | 1366-588X 0020-7543 |
| DOI: | 10.1080/00207543.2016.1196835 |
| Popis: | International audience; In 5-axis high speed milling, large incoherent movements of rotary axes around the singular point are known to be a problem. Correction methods found in the literature deal mostly with the collision that may happen between the tool and the part but not with the feedrate slowdowns which affect surface quality and machining productivity. The method proposed in this paper addresses both geometrical and productivity issues by modifying the tool axes orientation while respecting maximum velocity, acceleration and jerk of the machine-tool axes. The aim is to detect these behaviors and replace the considered portion of the tool path by a patch curve respecting kinematical contraints of the machine tool. Compare to previous works, the inserted patch curve is not constrained to pass through the singularity but respect tangential contrains to ensure the monotony of the tool path and is also connected with the rest of the tool path to ensure a continuity up to the third derivative in order to fulfill jerk limitations. For that purpose, the initial articular positions of the rotary axes around the singular point are fitted with B-spline curves, modified and finally discretized for linear interpolation. Experimental investigations on a test part are carried out to show the efficiency of the method in terms of feedrate and surface quality. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |