Here is our
Klingelnberg P26 involute gear measuring centre at work while performing the dimensional control of a module 0.5 worm screw.
As often happens when dealing with precision micro-mechanics, the part in question is rather complex to produce, and not only because of its limited tolerances. This worm screw in particular is, in fact, produced in important batches, the typical situation in which it is necessary carefully monitor the capacity of the process in order to avoid unwelcome surprises or a large quantity of measurements.
The actual measurement process, furthermore, is far from easy: the main difficulty lies in the fact that the thread of a worm screw is very fine and the feeler is microscopic. Maximum attention must therefore be paid because a simple wrong movement can break the screw. The screw gripping process is also very delicate and, if incorrect and non-repetitive, could deliver undesired results.
