| 摘要 |
A longitudinal displacement unit for a shaft assembly includes a profiled sleeve ( 11 ) with first ball grooves ( 12 ), a profiled journal ( 21 ), second ball grooves ( 22 ), balls ( 31 ) which are arranged in groups in pairs of first and second ball grooves ( 11, 22 ), and a ball cage ( 41 ) which is positioned between the profiled sleeve ( 11 ) and the profiled journal ( 21 ) and fixes the balls ( 31 ) in their axial position relative to one another. The ball cage ( 41 ) contains elastic rolling members which are positioned between the profiled sleeve ( 11 ) and the profiled journal ( 21 ), so as to be radially pre-tensioned and which, during the transmission of torque, remain largely free from circumferential forces.
|
