| 摘要 |
A horizontal external broaching machine has a horizontally movable tool slide disposed on a horizontal machine frame. The tool slide, which serves to receive a broaching tool, is supported laterally and vertically, by means of guide surfaces, on guide surfaces of the machine frame. The tool slide is provided with a toothed rack which extends in the direction of movement of the tool slide. A driving pinion, provided with corresponding teeth, meshes with the rack, the pinion being adapted to be driven via a shaft by a drive motor. The center of gravity of the tool slide and of the rack together with the associated drive pinion are disposed on one side of the guide surfaces. The drive pinion is arranged vertically above the rack, the rack and the drive pinion being provided with helical teeth which, during driving in the broaching direction, are acted on by a force directed in the direction of the shaft of the drive pinion and intensifying the bearing forces acting on the guide surfaces for the tool slide. |
