Patent ID: 7024927
Filing Date: 2006-04-11
Classification: G01B,Y10T

Abstract:
1. A measuring device for measuring motor vehicle wheels, comprising a rotary and clamping unit carrying the wheel to be measured, as well as at least one measuring station arranged near the periphery of the wheel, with a positioning sled system designed in the form of a cross-sled, with a transducer with computer-controlled positioning drive, the transducer being connected to the cross-sled and having a measuring roll for performing concentricity measurements, lying with nonpositive locking against the periphery of the wheel, as well as a process computer for carrying out the measuring process according to a predetermined program and for processing the measured values, wherein only one measuring station is provided with a profiled measuring roll ( 20 ), which has different profiles ( 21 , 22 , 23 ) axially behind one another for lying against the rim flange ( 12 ), rim shoulder ( 13 ), rim hump ( 14 ), rim bed ( 15 ) or similar regions of the rim, wherein the cross-sled ( 40 ) has two motors, which are perpendicularly arranged to one another, the advancing force and direction of which and thus the pressing force and pressing direction of the measuring roll ( 20 ), lying against the wheel ( 10 ), can be altered to control the motor current as a function of the predetermined program, wherein the position of the sleds ( 41 , 43 ) of the cross-sled ( 40 ) is measurable with a distance sensor ( 42 , 44 ) which is electrically connected to the process computer and wherein the positioning drive of the transducer can be controlled by the process computer in such a way that the measurements of the areas of the rim ( 11 to 15 ) are performed sequentially in time with the profiled measuring roll ( 20 ).