Patent ID: 9511471
Filing Date: 2016-12-06
CPC Classification: B23P,B24B,G05B,Y10T

Claim Text:
1. A burnishing method comprising the steps of: causing a pressing unit, which a burnishing tool of a burnishing device has, to press a surface of an object to be processed, moving the pressing unit by a tool driving device of the burnishing device so that pressing force applied by the pressing unit in a normal direction of the surface of the object is equal to a predetermined pressing force; rotationally moving the pressing unit by the tool driving device in a direction in which the surface of the object to be processed is processed; calculating pressing force to be applied by the pressing unit in the normal direction of the surface of the object on the basis of a strain amount of the burnishing tool detected by a strain sensor of the burnishing device during the rotational pressing of the pressing unit in the processing direction, the pressing force in the normal direction of the surface of the object being correlated with a magnitude of compressive residual stress formed by burnishing; calculating a correction amount on the basis of the calculated pressing force and stored pressing force in advance; and controlling the tool driving device so that the displacement of the tool driving device in the pressing direction is corrected on the basis of the calculated correction amount.