| 摘要 |
PURPOSE:To automatically correct a tool diameter with no necessity for edge point adjusting work, by storing an error between an aiming machined bore and an actual machined bore to be fed back to an eccentric angle of an internal main spindle when it performs the next boring and adding a correction angle to the eccentric angle so as to position it to a degree of the eccentric angle of the internal main spindle. CONSTITUTION:If an error 2DELTAR is assumed to be provided between an aiming machined bore U and an actual machined bore 2R, a device, storing an error DELTAR obtained when a machine bore is measured and feeding back the error to an eccentric angle theta when this tool 3 performs the next boring, obtains the aiming machined bore U by adding an eccentric correction angle DELTAtheta to the eccentric angle theta and positioning it to a degree of theta+DELTAtheta. |
