| 摘要 |
<p>The present invention relates to a punch press having a frame having an overhead beam and base portion, a vertically movable ram mounted at a front end of the overhead beam, a tool holder having upper and lower arms and being disposed on the base portion of the frame with a gap between the tool holder and the overhead beam, a plurality of upper punching tools disposed at a front end of the upper arm of the tool holder, a plurality of lower tools corresponding to the upper tools and disposed at a front end of the lower tool holder, a striker mounted on the ram so as to hit each of the upper punching tools and a workpiece feeding and positioning device disposed on the tool holder. The elements of the invention are arranged such that vibration and shocks occurring during the operation of the ram are not transmitted to the workpiece feeding and positioning device, and the punching tools. Also included is a eccentric member on the ram for performing leftward and rightward adjustment of the ram, and a vibrationally isolated driving means for moving the striker along the ram so as to adjust it over a desired upper punching tool.</p> |
