drive apparatus , in particular for driving a worm of an injection molding machine , which worm is arranged coaxially with respect to an injection molding cylinder , having a housing which is mounted such that it can be displaced in an axial direction of the housing and is fixed rotationally , an output shaft which is mounted non - displaceably and rotatably in the housing , a rotational drive which is arranged in the housing for the rotational drive of the output shaft , and a translatory drive which is arranged in the housing for the translatory drive of the housing .