Tilting unit driven by cables for cryomanipulators

摘要

Tiltable cable drive unit consist of two cable pulleys from a cable wheel which has outer ring and inner ring. The outer ring shows inner toothing and the inner ring is connected firmly with a shaft and shows outer toothing. The outer ring fits in the inner toothing. The recesses of internal teeth of the outer ring have unchanged rectangular cross section over the entire height of the outer ring. The external toothing of the inner ring with its largest cross section into the recesses of internal toothing of the outer ring fits on the inner ring prominent teeth. The teeth of external toothing of the inner ring has variable width over the height of the inner ring which is largest in the center of the height of the inner ring and corresponds at the most to the maximum width of the recesses in the outer ring. The width of the teeth with the distance from the center of the height is smaller and the angle of the teeth profiles is 30[deg] between maximum and minimum width of the teeth.