- Tytuł:
- Enhancing machining accuracy reliability of multi-axis CNC Indexed by: machine tools using an advanced importance sampling method
- Autorzy:
-
Wang, Zhiming
Yuan, Hao - Powiązania:
- https://bibliotekanauki.pl/articles/2038141.pdf
- Data publikacji:
- 2021
- Wydawca:
- Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
- Tematy:
-
precision allocation
comprehensive error
machining accuracy reliability
sensitivity analysis
advanced importance sampling method - Opis:
- The purpose of this paper is to propose a general precision allocation method to improve machining performance of CNC machine tools based on certain design requirements. A comprehensive error model of machine tools is established by using the differential motion relation of coordinate frames. Based on the comprehensive error model, a reliability model is established by updating the primary reliability with an advanced importance sampling method, which is used to predict the machining accuracy reliability of machine tools. Besides, to identify and optimize geometric error parameters which have a great influence on machining accuracy reliability of machine tools, the sensitivity analysis of machining accuracy is carried out by improved first-order second-moment method. Taking a large CNC gantry guide rail grinder as an example, the optimization results show that the method is effective and can realize reliability optimization of machining accuracy.
- Źródło:
-
Eksploatacja i Niezawodność; 2021, 23, 3; 559-568
1507-2711 - Pojawia się w:
- Eksploatacja i Niezawodność
- Dostawca treści:
- Biblioteka Nauki
Artykuł