Trajectory planning for roboticbelt grinding of turbine blade

ZHANG Hai-yang1, YANG Wen-yu1, ZHANG Jia-jun2, CHEN Wei1

(1.School of Mechanical Science and Engineering, Huazhong University of Science and

Technology, Wuhan 430074, China; 2. Wuxi Turbine Blade Co. Ltd., Wuxi 214174, China)

Abstract: In order to improve the quality and efficiency of blade grinding, the robot and belt grinding technologies were applied to blade machining, and the characteristics and working process of the system were introduced. Through the comparison of multi-axial machining trajectory generation technologies, equal chord deviation fitting method and equal scallop height method were adopted to plan the robot trajectory. Because of their shortcomings in blade grinding, these two methods were improved. In order to evaluate the improved methods and compare effects of manual and robotic processing, a test was carried out. The experimental results show that, the blade machined by robot has much better surface quality than that by hand. The relevant experiment validates the effectiveness of robotic machining and the improved methods.