A04 Whirling切削機構によるヘリカルブレード加工(OS6 切削加工(1))

Abstract

Whiling is applied to helical plate machining with controlling the spindle speeds of the workpiece and the tool. When the ratio of the tool spindle speed to the workpiece one is 2, a plate type blade is machined. Then, a helical blade is machined with changing the ratio a little and feeding the tools in the direction of the workpiece axis. A mechanistic model is presented to simulate the machining shapes with the edges motions during machining. The machining shapes and the surface finishes were measured by a coordinate measuring machine. The curvature of the plains on the blade decreases with the rotation radius of the tools; the blade thickness becomes large at the end of the workpiece due to workpiece displacement; and the surface finish around the center is better than the side of the blade.