Saurer-allma Gmbh

Firma Saurer-allma Gmbh

Harald Feistenauer

Harry L Sawatzki

Ludwig Krause

A wedge-type mechanical servomotor has a primary member (1) with wedge faces (10) on which roll bodies (7) may move. The roll bodies (7) also engage faces (8) on abutment (9). Further roll bodies (17) engage cooperating wedge faces (16) on abutment (9) and (18) on secondary output member (19), and other roll bodies (5) engage cooperating faces (13) on abutment (9) and (14) on bushing (26), so that the device achieves essentially pure rolling movement of the roll bodies (5,7,17) which move between all faces on abutment (9) and faces (10, 14, 18) opposite to these faces (8, 13, 16) and supporting the roll bodies (5, 7, 17).

Mechanical servomotor

A drive for a machine vice having a vice body (8), a fixed jaw (9) and a movable jaw (4), a drive spindle (1) rotatably mounted in a thrust block (6) at one end of the vice body adjacent the movable jaw, a slide or drive nut (29) for the movable jaw cooperatively engaging drive screw threads (30) on the spindle so that rotation of the latter actuates the movable jaw, these parts extending on one side of the thrust block (6), a threaded sleeve (11) mounted in the thrust block, an extension (13) on the drive spindle extending rotatably and slidably through the thrust collar, a chamber drive unit (15) threadedly engaged (14) with extension (13) at one end and threadedly engaged at the other end with crankshaft (16) driven at its outer end by a crank (3) so that the crank rotates the drive spindle. A power amplifier (2) is mounted between and engaged with the crankshaft and drive spindle within the chamber drive unit and a releasable ball type clutch (35) is provided between the crankshaft and chamber drive unit so that force on the crankshaft produced by the crank rotatably drives the chamber drive unit which rotates the drive spindle up to a predetermined torque, after which the ball clutch disengages and the crankshaft alone rotates to operate the power amplifier to move the drive spindle linearly.

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Lindenberg, Germany

Harald Feistenauer