Harmonic Drive
Optical Measuring Machine Indexing Table
Precision output bearing
Special Wave Generator
An innovative method for the quality control of rotatio-symmetrical parts is now available in the form of non-contacting measurement machines. The optical measuring system used in these machines scans the profile of the specimen without the need for a probe that contacts the surface of the part. This procedure can be used for very fast and accurate measurement of shaft-type components.
The specimen is placed on an indexing table, which rotates the part during the measurement cycle. This indexing table incorporates a HDGM-B precision gearbox. This gearbox must provide a combination of high transmission accuracy and high bearing accuracy. The IH-tooth profile ensures that the gear provides smooth, highly accurate positioning, while the 4-point output bearing provides excellent geometric tolerances.
It is essential that the bearing exhibits low run-out as well as high accuracy with respect to parallelism and concentricity, to avoid errors influencing the measurement results. The gear is driven by a stepping motor and it is important to note that in this case the Wave Generator does not include an Oldham coupling and is also executed with a special low inertia design.
