Within the past few years, production conditions have changed considerably in many industrial enterprises. Increasingly
small batch sizes must be produced to a high standard of quality in shorter time intervals. Consequently, the production
equipment must be as flexible and simple to use as possible. The condition also applies for the production of gears. In this
case, the function of the gear inspection technology is to check a wide range of gears, comparing them with tolerances
predetermined in company standards or in national and international standards.
This task, very ambitious in itself, must frequently be performed under highly accurate production conditions. Suitable
checking equipment is now available in the form of special CNC-controlled gear measuring machines, which have
already been established in the industry for many years.
This presentation will describe the design and functioning of appropriate inspection machines. The conceptual design is
explained in reference to the individual tasks, and the most important components of the testing machine, such as drive
systems, probe systems, control and computer systems, are described. The second part of the presentation deals with
software, as well as practical measurement examples in the areas of software management, operator guidance, evaluation
and documentation of measuring results, examples of measurement times, measurement accuracy and the introductionof
new software for the analytical evaluation of a cylindrical gear set. By means of the tooth contact analysisof a gear set, the
combined effect of gear and pinion is simulated on the computer on the basis of individual profile and alignment
measurements.

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