Driving apparatus

Details Driving apparatus Driving apparatus

B - Operations, Transporting

23

H

327/117, 327/31

B23H 7/26 (2006.01) B23K 9/013 (2006.01) B23K 9/10 (2006.01) B23Q 5/10 (2006.01)

Patent

CA 1303685

ABSTRACT The driving apparatus for the rotation of the spindle or the work piece pallet of an electroerosive machining device com- prises two electric motors which drive e.g. the spindle to a rotational movement by means of two gear boxes and a plurality of gear wheels. In order to avoid any backlash in the gear box and any clearance between the gear wheels and to compensate the elasticity of the gear transmission, the two electric motors are always operated to rotate in opposite directions and/or to yield different values of torque. Thus, the entire transmission assembly is always subjected to a certain bias force so that a precise positioning of the spindle is possible by means of simple and inexpensive driving elements.

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