The monitoring of flank wear on the CBN tool in the hard turning process
Författare
Summary, in English
In precision hard turning, tool flank wear is one of the major factors contributing to the geometric error and thermal damage in a machined workpiece. Tool wear not only directly reduces the part geometry accuracy but also increases the cutting forces drastically. The change in cutting forces causes instability in the tool motion, and in turn, more inaccuracy. There are demands for reliably monitoring the progress of tool wear during a machining process to provide information for both correction of geometric errors and to guarantee the surface integrity of the workpiece. A new method for tool wear monitoring in precision hard turning is presented in this paper. The flank wear of a CBN tool is monitored by feature parameters extracted from the measured passive force, by the use of a force dynamometer. The feature parameters include the passive force level, the frequency energy and the accumulated cutting time. An ANN model was used to integrate these feature parameters in order to obtain more reliable and robust flank wear monitoring. Finally, the results from validation tests indicate that the developed monitoring system is robust and consistent for tool wear monitoring in precision hard turning.
Avdelning/ar
Publiceringsår
2003
Språk
Engelska
Sidor
697-702
Publikation/Tidskrift/Serie
International Journal of Advanced Manufacturing Technology
Volym
22
Issue
9-10
Dokumenttyp
Artikel i tidskrift
Förlag
Springer
Ämne
- Materials Engineering
Nyckelord
- turning
- hard turning
- monitoring
- CBN
- wear
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0268-3768