Machine tool for measuring a workpiece

摘要

The present disclosure relates to a machine tool, in particular a grinding machine, and to a method for measuring a workpiece, in particular a workpiece diameter, in a machine tool, in particular a grinding machine, which comprises a workpiece mount, a tool unit, a measuring device and a control device which is connectable to the measuring device and the tool unit, wherein the measuring device is accommodated on the tool unit and comprises at least two measuring probes, wherein in a measuring configuration the at least two measuring probes are spaced apart by a basic spacing which defines a measurement region, wherein the basic spacing is selected to be greater than a known reference dimension, wherein the control device is configured for acquiring values detected by way of the at least two measuring probes, of detecting an actual position of the tool unit, and, on the basis of a displacement path of the tool unit when probing a workpiece which is moved into the measurement region, of determining an actual spacing, in particular an actual diameter, with consideration to the reference dimension and/or the basic spacing.

主权项

1. A grinding machine, comprising:
a workpiece mount comprising at least one workpiece holder for accommodating a workpiece, a tool unit comprising a grinding head provided with a tool spindle for accommodating and for driving at least one grinding wheel, wherein the tool unit is movable along a feed axis towards the workpiece, a measuring device accommodated at the tool unit, wherein the measuring device comprises at least two measuring probes, wherein the at least two measuring probes are spaced apart in a measuring configuration by a basic spacing defining a measurement region, and wherein the basic spacing is selected to be greater than a known reference dimension, and a control device connectable to the measuring device and the tool unit, wherein the measuring device is configured for being moved with the tool unit along the feed axis, wherein the control device is configured for acquiring values detected by the at least two measuring probes of the measuring device, wherein the control device is further configured to:
detect an actual position of the tool unit along the feed axis, anddetermining an actual spacing of the workpiece on the basis of a displacement path of the tool unit when a probing of the workpiece that is disposed in the measurement region is performed, wherein the probing of the workpiece is performed with the at least two measuring probes at least based on one of the reference dimension and the basic spacing.