Machine tool used e.g. as a mortar injection machine comprises a machine unit fixed on a platform hinged on a frame as an element of a four-bar mechanism via two parallel rockers

摘要

Machine tool comprises a drive motor (16) arranged on a frame, a machine unit (18) arranged relative to the frame in a specified spatial orientation, a belt (24) tensioned between a motor-side and a machine unit-side pulley (20, 22), and a belt-tensioning device (26). The machine unit is fixed on a platform (28) that is hinged on the frame as an element of a four-bar mechanism via two parallel rockers (30, 32). At least one of the hinges (36, 38, 40, 42) of the four-bar mechanism is elastically pre-tensioned in the tensioning direction of the belt via a torsion element (44). Preferred Features: The torsion element is a torsion spring.