US Patent No. 9,409,270

MACHINE TOOL HAVING ONBOARD MEASURING DEVICE


Patent No. 9,409,270
Issue Date August 09, 2016
Title Machine Tool Having Onboard Measuring Device
Inventorship Yonpyo Hon, Yamanashi (JP)
Assignee FANUC CORPORATION, Yamanashi (JP)

Claim of US Patent No. 9,409,270

1. A machine tool having an onboard measuring device, which has a plurality of drive axes, machines a machining object by
controlling the drive axis by a numerical controller so as to relatively move a tool and the machining object, and carries
out a measurement of the machining object by relatively moving the onboard measuring device and the machining object, the
onboard measuring device having a probe, the machine tool having the onboard measuring device comprising:
a position detector which detects a position of each of the drive axes;
an input unit which inputs a position which is detected by the position detector to the numerical controller;
a work determining unit which determines, based on the positions of the drive axes input by the input unit, whether machining
of the machining object is to be carried out, measurement of the machining object is to be carried out by the onboard measuring
device, washing of the machining object is to be carried out, or washing of the probe is to be carried out; and

an execution commanding unit which commands, based on the determination of the work determining unit, machining of the machining
object, measurement by the onboard measuring device, washing of the machining object or washing of the probe;

wherein
the tool and the onboard measuring device are attached to the same drive axis,
a moving range of the drive axes in which machining of the machining object by the tool is possible is assumed to be an effective
machining range, and a moving range of the drive axes in which measurement of the machining object by the onboard measuring
device is possible is assumed to be an effective measuring range,

the work determining unit determines:
that the drive axes are in a state where machining of the machining object by the tool is possible if the drive axes are in
the effective machining range;

that the drive axes are in a washing standby state if the drive axes are in a range which belongs to neither the effective
machining range nor the effective measuring range;

that the drive axes are in a washing effective state if the drives axes enter the effective measuring range from the washing
standby state;

that the washing has been finished if the washing is stopped after the washing is actually carried out for a predetermined
time from the washing effective state; or

that the drive axes are in a state where measurement of the machining object is possible if the drive axes are in the effective
measuring range and also in a state where the washing is finished.