| 摘要 |
The invention relates to a punching press with a clamping plate (27) and with a press ram (1) which lies opposite the upper side of the clamping plate (27) and operates towards the clamping plate (27) and is moveable up and down via four tension columns (2) by means of a crank drive arranged below the belt movement plane (X) of the punching press. The press ram (1) is guided exclusively via the tension columns (2) which, in turn, are guided in inclination-tolerant guides (3) in the belt movement plane (X) in such a manner that the press ram (1) and the tension columns (2) can be positioned obliquely as a consequence of differing longitudinal expansion of the tension columns (2) under an eccentric load by the tension columns (2) being inclined about axes of inclination running in the region of the belt movement plane (X) of the punching press. By means of the configuration according to the invention, distortion of the punching press under an eccentric load, which would lead to uncontrollable operating conditions during the punching and a high degree of wear at the guides of the machine, is avoided, and it can be ensured that, in the event of a possible skewed position of the ram, no tool offset, which would result in a high degree of tool wear or even in tool fracture, occurs. |
| 主权项 |
1. Punching press comprising:
a clamping plate, a press ram, four tension columns guided by inclination-tolerant guides, and a drive mechanism, wherein the press ram is disposed opposite an upper side of the clamping plate and is movable towards and away from the clamping plate by up and down movement via the four tension columns, wherein the drive mechanism is disposed below a band movement plane of the punching press and drives said up and down movement of the press ram, wherein the press ram is guided in said up and down movement exclusively via the tension columns, wherein the inclination-tolerant guides are configured to allow inclination of the tension columns about axes of inclination in a region of the band movement plane when the press ram is under an eccentric load.
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