Patent ID: 9562756
Date: 2017-02-07
CPC Classifications: B24B,G01B

Claim:
1. Measuring device for in-process measurement of test pieces during a machining operation on a machine tool comprising: a) a base body; b) a measuring head which is movable between a neutral position and a measuring position and which is connected to the base body via a rod assembly which is configured and set up in such a way that the measuring head in the measuring position follows orbital rotations of a test piece about a rotational axis; c) the measuring head having a measuring sensor which is deflectable along a linear axis for recording measured values during a measuring operation; d) a control apparatus for controlling the measuring operation; e) the control apparatus is configured and set up in such a way that the measuring device may be calibrated in a calibration mode; f) the measuring head including a measuring prism having an opening first angle and an axis of symmetry; g) an orientation of a linear axis of the measuring sensor relative to the axis of symmetry of the measuring prism is defined by a second angle; h) the calibration is carried out with respect to one of the first angle and the second angle; i) the control apparatus has a memory in which calibration data obtained during a calibration operation are storable; j) the memory is in, or may be brought into, data transmission connection with an evaluation apparatus for taking the calibration data into account in the evaluation of measured data obtained during a measuring operation; and k) the calibration is carried out using a cylinder which in the peripheral direction has a flattened portion with a predefined extent at at least one location.