Rapid measurement method e.g. for hardware with shaped elements of any spatial orientation - using coordinate measuring unit with a measuring scanning head having measurement systems, which give amount of scanner deflection in coordinate direction XYZ

摘要

Data Pi (X, Y, Z) transmitted from the computer (4) of the coordinate measuring unit to the control of the coordinate measuring unit, describes the desired position and the desired contour of the shaped elements to be measured. The control derives track data (L1) from the data, along which the scanning head (2) of the coordinate measuring unit travels, so displaced compared to the desired contour, that the scanning ball (7) at the scanner remains in contact with the workpiece (17) and the scanner deflection (A actual) stays in the permitted measuring range (MR) of the scanning head. The control adjusts the force of the individual measuring force generators (23) or a specified scanner deflection (A desired) corresp. to one, so that the resulting total measuring force (F desired) is aligned at each point on the desired contour. The deviations of the actual contour of the shaped elements from the desired contour or characteristic sizes such as centre point, dia. etc. are computed from the signals of the measured value transmitter (18).