Horizontal external broaching machine

A horizontal external broaching machine comprising a horizontal machine frame having respective upper and respective lower vertical and inclined guide surfaces;

• a horizontally movable tool slide having respective upper and respective lower vertical and inclined guide surfaces and being disposed on said horizontal machine frame, said tool slide serving to receive a broaching tool, being supported laterally and vertically by its said vertical and inclined guide surfaces on said vertical and inclined guide surfaces of said machine frame, at least two of said vertical guide surfaces of said machine frame being disposed in a common vertical plane for receiving horizontal forces and at least said lower, inclined guide surface, which is inclined in relation to the vertical and in relation to the horizontal being provided on said machine frame for absorbing vertical forces and receiving said lower, inclined guide surface of said tool slide;
• a toothed rack on said slide, said rack extending in direction of movement of said tool slide;
• a driving pinion provided with corresponding teeth meshed with said rack, said pinion being adapted to be driven via a connecting shaft by a drive motor;
• and wherein the center of gravity of said tool slide is disposed on one side of said guide surfaces and said rack together with said drive pinion is disposed on said one side of said surfaces, said drive pinion being arranged vertically above said rack, and said rack and said drive pinion are provided with helical teeth which during driving in a broaching direction are acted on by a force, directed in direction of said shaft connected to said drive pinion and intensifying bearing forces acting on said guide surfaces for said tool slide.