Analysis and implementation for technique for cutting chatter monitoring

作者：Lü Kaibo; Jing Minqing^*; Zhang Yongqiang; Liu Heng; Li Meng

来源：Journal of Xi'an Jiaotong University, 2011, 45(11): 95-99.

• C# programming
• Chatter vibrations
• Computer numerical control
• Cutting chatter
• Industrial tests
• Machining Process
• Monitoring and diagnosis
• Prototype system
• Reference database
• Surface finishes
• Time and frequency domains
• Tool life

Chatter vibrations in metal cutting result in poor surface finish, reduced productivity, and shortened tool life. On the external reconfigurable-integrated monitoring and diagnosis prototype system for computer numerical control (CNC), taking the typical machining processes of turning and milling as monitoring objects, the accelerometers are chosen to acquire the cutting states and the feature extraction of chatter in the time and frequency domains are analyzed, then the criterion of chatter occurring is formulated in accordance with the variance and spectrum. A comparison scheme between the monitoring data and the reference database representing the stable cutting state is considered, subsequently, the chatter monitoring module and algorithms are implemented with C# programming, where delay strategy and overlap processing enable to improve the accuracy and rapidity of the monitoring and diagnosis system. The industrial tests are conducted to verify that the diagnostic rate is up to or beyond 80%.

• 出版日期2011