Patent ID: 8160737
Filing Date: 2012-04-17
Classification: B23Q,G01B,Y02P

Abstract:
1. A machine tool with a numerical controller and an on-machine measuring device, wherein said machine tool is fitted with a position detector for detecting a position of a moving axis of the machine tool and said on-machine measuring device for measurement on the machine tool; said numerical controller receives an axial position detection signal output from the position detector and a measurement signal output from the on-machine measuring device through interfaces; the interfaces are designed so that the numerical controller receives the axial position detection signal and the measurement signal with the same timing; and said numerical controller includes a storage device which stores data on the axial position detection signal and the measurement signal received individually through the interfaces and a transfer device which transmits the data stored in the storage device to an external device; wherein said interfaces are included in amplifiers for controlling motors which drive moving axes of the machine tool; said numerical controller receives the measurement signal from the on-machine measuring device via an interface included in one of said amplifiers which is connected to none of the motors for driving the machine tool; said interfaces comprise a first interface which is included in each of amplifiers for controlling motors for driving axes of the machine tool, and a second interface which is included in one of said amplifiers which is connected to none of the motor for driving the axes of the machine tool; said first interface transmits the axial position detection signal output from the position detector to the numerical controller, and the second interface transmits the measurement signal output from the on-machine measuring device to the numerical controller; and the first interface and the second interface have the same configuration so that the axial position detection signal and the measurement signal are configured to simultaneously input into the numerical controller.