| 摘要 |
Machine tools with a horizontally sliding tool-holding ram in which a force is applied to the anterior end of the ram by a bar which moves with the ram, running on a first roller located on the front of the ram support, and under a second roller located on the rear of the ram support, the different pairs of rollers and the associate bar or bars being disposed and shaped in such a way as to apply, to the anterior part of the ram, an upwardly directed force for balancing the weight of the ram and of the tooling which it carries. |
