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| Robotic Belt Grinding Accuracy Control Technology of Aero-Engine Blade Based on Grey Correlation Method |
| XIAO Guijian, ZHANG Youdong, HUANG Yun, LÜ Chong, HE Yi |
| (State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China) |
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Abstract The surface integrity and structural characteristics of titanium alloy blades have a great impact on the aerodynamic performance of aero-engines. Abrasive belt grinding is widely used in the surface polishing of titanium alloy blades, which plays an important role in improving its surface integrity. However, it is still difficult to process the surface of workpieces with complex curved surfaces. Industrial robots are widely used in various fields due to the advantages of high flexibility and general versatility. Therefore, robotic belt grinding technology can take advantage of the flexibility of robots and the advantages of abrasive belt polishing to greatly improve the surface quality. However, in the current grinding and polishing of robots, there is still a problem that the machining accuracy cannot be controlled well, which will eventually affect the surface integrity and machining quality of the workpiece. In order to solve this problem, a robotic belt grinding accuracy control based on gray correlation method was proposed, and experimental research was carried out on this method. It can be obtained that the surface roughness can reach 0.38μm and meet the requirement that the surface roughness of belt grinding is less than 0.4μm, the precision of titanium alloy blade can reach about 0.04mm.
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2020, 
