Research on adaptive belt grinding aeroengine titanium alloy fan blades

Most aeroengine blades are made of titanium alloys, which have good strength and mechanical properties, but poor machinability. The surface precision and surface quality of the blades after precision forging and precision milling need to be machined to meet the requirements of aeroengine.The machining allowance of precision forged blade is determined by the best fitting method with three coordinate measuring instrument, which is removed from the blade by adaptive abrasive belt grinding method. The results show that the grinding process can accurately remove the machining allowance of precision forged blade surface and guarantee the arc transition of blade inlet and exhaust edges. In addition, the roughness R_a values of blade surface are all below 0.4 μm.