한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)
- 제15권11호
- /
- Pages.189-198
- /
- 1998
- /
- 1225-9071(pISSN)
- /
- 2287-8769(eISSN)
시계열 모델과 상관차원 해석을 통한 공구수명의 감시
Monitoring of Tool Life through AR Model and Correlation Dimension Analysis
초록
Recently, monitoring of tool life is a matter of common interesting because tool life affects precision, productivity and cost in machining process. Especially flank wear has a direct effect on cutting mechanism, so the various pattern of cutting force is obtained experimentally according to variation of wear condition. By investigating cutting force signal, AR(Autoregressive) modeling and correlation dimension analysis is conducted in turning operation. In this modeling and analysis, we extract features through 6th AR model, correlation integral and normalized correlation integral. After the back-propagation model of the neural network is utilized to monitor tool life according to flank wear. As a result. a very reliable classification of tool life was obtained.
키워드