Tactile runout measurement and length measurement
The invention relates to a measuring device for measuring runout of an end face ( 6, 7 ) of an elongate profiled member ( 3 ), said measuring device comprising: at least one measuring head ( 33, 34 ) that can move back and forth along a longitudinal axis (L) and has a plurality of styluses ( 333, 343 ) which are placed next to each other, can individually move relative to the measuring head ( 33, 34 ) in the longitudinal direction and are oriented towards a support ( 31, 32 ) for the elongate profiled member ( 3 ), said support ( 31, 32 ) being located next to the measuring head ( 33, 34 ); and an evaluation unit that is connected in a data conducting manner to each of the styluses ( 333, 343 ) and calculates the runout from the individual values measured by the styluses ( 333, 343 ).
1. Measuring device for measuring a runout of a planar face ( 6 , 7 ) of an elongate profiled member ( 3 ), comprising
at least one measuring head ( 33 , 34 ) which can move back and forth along a longitudinal axis (L) and has a plurality of measuring probes ( 333 , 343 ) which are arranged adjacent to each other, can move individually in the longitudinal direction relative to the measuring head ( 33 , 34 ) and are oriented towards a support ( 31 , 32 ) for the elongate profiled member ( 3 ), said support being arranged adjacent to the measuring head ( 33 , 34 ); and an evaluation unit which is connected in a data conducting manner to each of the measuring probes ( 333 , 343 ) and calculates the runout from the individual values measured by the measuring probes ( 333 , 343 ).
2. Measuring device according to claim 1 , characterised by two measuring heads ( 33 , 34 ) which are arranged opposite one another along the longitudinal axis (L) and between which the support ( 31 , 32 ) for the elongate profiled member ( 3 ) is arranged, and in that measuring probes ( 333 ) of one measuring head ( 33 ) and further measuring probes ( 343 ) of the further measuring head ( 34 ) in each case face the support ( 31 , 32 ), and the further measuring probes ( 343 ) are designed to be movable in the longitudinal direction relative to the further measuring head ( 34 ) and are arranged adjacent to one another.
3. Measuring device according to one of claim 2 , characterised in that the further measuring head ( 34 ) is designed to be displaceable back and forth along the longitudinal axis (L).
4. Measuring device according to claim 1 ,
characterised in that the measuring probes ( 333 ) and/or the further measuring probes ( 343 ) are arranged in a circle.
5. Measuring device according to one of claim 1 ,
characterised in that each of the measuring probes ( 333 ) has a bearing surface for the elongate profiled member ( 3 ) and a measuring system ( 38 ), which is connected in a data conducting manner to the evaluation unit, is associated with each measuring probe ( 333 ).
6. Measuring device according to claim 5 , characterised in that the measuring system ( 38 ) comprises a tactile measuring probe.
7. Measuring device according to claim 1 , characterised in that a position transmitter ( 35 ) is associated with the measurement head ( 33 ) and a further position transmitter ( 36 ) is associated with the further measurement head ( 34 ).
8. Method for measuring a runout of a planar face ( 6 , 7 ) of an elongate profiled member ( 3 ), in which the elongate profiled member ( 3 ) is placed into a support ( 31 , 32 ),
at least one measuring head ( 33 , 34 ) with a plurality of measuring probes ( 333 , 343 ) arranged adjacent to one another along a longitudinal axis (L) is moved towards the planar face ( 6 , 7 ), until all measuring probes ( 333 , 343 ) touch a portion of the planar face ( 6 , 7 ) and individual measured values of the measuring probes ( 333 , 343 ) are supplied to an evaluation unit which calculates the runout from individual measured values.
9. Method according to claim 8 , characterised in that differential values are calculated from the individual measured values and the runout is calculated from the differential values.
10. Method according to claim 8 ,
characterised in that position measurement values of the measurement head ( 33 ) and of the further measurement head ( 34 ) are in each case measured by means of a position transmitter ( 35 , 36 ) and a length of an elongate profiled member is determined from the position measurement values taking account of the runout.