Linear actuator for precision machine tool has carriage sliding on rail with endless ball bearings tensioned against rail by hydraulic adjusters

摘要

The rail (12) has the carriage (28) running with an endless ball track in grooves (30-40) returning through paths (A2,B2). It is tensioned against the rail by strips (42,44), using hydraulic pressure applied by adjusters (76,78) with fluid delivered through a channel (74).