| 摘要 |
<p>A punch press simplified in construction, easy in handling, manufactured at low costs, and moreover, high in reliability in operations. This punch press includes: an upper main shaft (3) made vertically movable by a hydraulic driving means (21, 22, 3a) and rotatable by a rotation driving means (7, 8, 9); a lower main shaft (30) positioned downwardly of the upper main shaft and indexingly rotatable in synchronism with the upper main shaft; upper and lower molds (23, 45) detachably mounted to the opposed end portions of the upper and lower main shafts, respectively; and upper and lower clamping means for clamping these upper and lower molds to the upper and lower main shafts (3, 30) while performing the phase positioning of these upper and lower molds, respectively.</p> |
