For the measurement of cutting tools, for example drills, milling cutters, reamers, hobs and inserts, coordinate measuring machines with three axes and an additional rotary axis are usually used. In tool metrology, a distinction is made between tool pre-setting and tool measurement. Presetting is used to align the tool in the processing machine. The tool manufacturer and also the user's incoming goods inspection, on the other hand, must ensure that the tools meet the geometric requirements. Also, in order to generate correction values for the tool manufacturing process, accuracies in the lowest micrometre range, sometimes even in the sub-micrometre range, are required when capturing the tool dimensions.
Coordinate measuring machine for the measurement of cutting tools, usually with three axes and an additional rotary axis. For example, drills, milling cutters, reamers, hobs and inserts can be measured.
When checking a coordinate measuring machine during the acceptance test for the customer or during machine maintenance, the measurement errors to the calibration value of standards are determined according to DIN EN ISO 10360 and the guideline VDI/VDE 2617. The use of calibrated standards enables traceability to international standards.
Simplifying coordinate measuring machine with probe (see tactile coordinate measuring machine)
The functional principle of all tactile sensors is based on mechanical contact with the measuring object. From this, electrical or optical signals are derived for further processing. With "star probes" and probe changes, an object can be measured three-dimensionally from all orientations with relatively little effort. For real geometric features with form errors, it is essential to capture a large number of measurement points. This can be problematic due to the considerable time involved.
