Chatter suppression in five-axis machining of flexible parts

In this work on line and off Line measures for chatter suppression in cutti ng flexible turbine blades on a five-axis machine were implemented. The off line measure was implemented by increasing the feed rate at times when the rotary axes were undergoing large increments. A spindle speed ramping cont roller was implemented for on line control. A combined scheme was also impl emented where both the feed scheduling, off line, and speed ramping, on lin e, effected the cutting simultaneously. Cutting tests of aluminum turbine b lades were conducted to test the effectiveness of the different vibration s uppression measures. Each measure, on and off line, worked well individuall y, and better results were obtained under the combined scheme. (C) 2001 Els evier Science Ltd. All rights reserved.