METHOD AND TOOL FOR TURNING

Japanese Patent JP3757807

B2

PROBLEM TO BE SOLVED: To provide a method for turning capable of remarkably increasing the surface roughess accuracy of a cut-finished surface. SOLUTION: A tool 10 is disposed aslant a specified angle β relative to a work axis Q so that the linear cutting edge 10a of the tool 10 is twisted relative to the work axis Q. With the tool 10 held in the state that a feed for cutting by an amount of a desired depth of cut m given to the tool in an X direction, a feed F is given to the tool 10 in the tangential direction to the outer peripheral surface of the work. Where a cut point crossed with the linear cutting edge 10 on the outer peripheral surface of the work W is m, the cut point m is moved continuously also in the work axial direction Q for feed F to cut the outside diameter of the work W so as to form a cut-finished surface with high surface roughness accuracy.