Device to move a milling unit to mill the welding electrodes of a point welding unit as in motor vehicle welding robots has crank drive between rest and working positions

摘要

A device to move a milling unit (18) for welding electrodes (12,14) between rest and operating positions comprises a carrier (26), a swivel arm (28), a drive unit and a crank drive with a force transmission coupling and crank dead point positions as the rest or working positions are approached. An independent claim is also included for a milling unit for the above.