抄録
A novel cutting process is presented to machine helical polygon shapes in the through holes with double rotations kinematics. A boring bar and a workpiece are controlled simultaneously to rotate at n : (n-1) rate of the spindles. When the tool is fed with changing the ratio a little, a helical polygon is machined in the hole. A kinematic model is established to simulate and control the polygon shapes in the presented process. The cutting tests were conducted to validate the helical polygon machining with the kinematic simulation. The flank face of the tool was ground to control the clearance of the tool from the inner surface in the cutting tests. In the presented cutting process, the helical polygon shapes are machined in the through holes at high machining rates. The polygon can also be controlled by the ratio of the tool and the workpiece with a boring bar.
