Subsequent mirror centering adjustment - uses variation of elastic behaviour of framework tubes for mirrors in serrulate frameworks

摘要

In order to increase the rigidity of framework tubes the tubes are equipped on the side of the mirror to be centred with additional mechanical parts which permit the setting of a required crest displacement. The additional mechanical parts are designed as pressure rods with pretension nuts or as tie-bars with pretension nuts. Means for supporting the pressure rods by framework tubes are provided. The pressure rod is pretensioned by means of a nut. Rings are provided to increase the breaking strength of the pressure rod. The centring pieces as well as the rings are fixed by adhesive.