The rotation stage with a flexible angular step from 0.04″ to 0.2″ with tense friction wave transmission: Theory and test of the prototype

The development of experiments using the synchrotron radiation (SR), as well as the progress in new technologies, free electron laser (FEL), etc. give rise to the need in the device providing angular or linear transposition, both highly precisive and reliably operating in an ultrahigh vacuum. The only reliable drive for the transpositions with a very small pitch (0.1…0.01 μm) is piezoceramics. Mechanical transmissions, excluding the friction wave one, cannot provide small transpositions for some reasons, limiting the possibilities of mechanical transmissions. viation of the dimensions in the production of friction wave transmissions are inevitable, which causes large errors in the transmission ratio. A new transmission, “tense transmission” is proposed in the present work. The principle of its operation is considered for the “tense friction wave transmission” as an example [1].