Novel cylindrical inner gear turning method

A novel cylindrical inner gear turning method includes circumference numerical control forming and radial numerical control forming; a linear cutting shaft Z parallel to a workpiece shaft and a rotating servo shaft B of a workpiece are in linkage to achieve the method; by changing the positioning distance of the linear cutting shaft Z, the circumference numerical control forming is completed when the workpiece is rotated; circumferential feeding is achieved through the relative position of the linear movement of the shaft Z; during plane multi-point numerical control forming, the indexing of each one-point processed spiral line and teeth is achieved through the rotating servo shaft B, and meanwhile material removal in the tooth width direction is completed; a workpiece radial shaft X completes the radial numerical control forming of a plane multi-point numerical control forming method in a numerical control manner; and multi-point composite movement of the circumference numerical control forming shaft Z and t