Claims
- 1. A press for shaping sheet metal parts, comprising:a frame formed by a pair of parallel side plates spaced-apart in a transverse direction of the press, each side plate having a generally C-shaped configuration defining two opposing legs spaced apart in a pressing direction perpendicular to the transverse direction, the frame further comprising at least one wall joined to and extending between the side plates; a stationary press beam mounted on the frame and extending in the transverse direction for supporting a first bending tool; a displaceable press beam supported in a guide arrangement of the frame such that the displaceable press beam is movable in the pressing direction toward and away from the stationary press beam, the displaceable press beam being structured and arranged to support a second bending tool for cooperating with a first bending tool on the stationary press beam to shape a sheet metal part disposed between the press beams; a first leg of each side plate having opposite side faces that face in the transverse direction and a supporting surface facing in the pressing direction; a drive arrangement secured in the frame and operable for moving the displaceable press beam toward and away from the stationary press beam, the drive arrangement comprising actuator drives mounted on side faces of the first legs of the side plates and drivingly connected to the displaceable press beam, the actuator drives having projections forming bearing surfaces that abut the supporting surfaces of the first legs such that reaction forces on the actuator drives generated during a pressing operation are directly transmitted into the side plates through the supporting surfaces thereof.
- 2. The press of claim 1, wherein the drive arrangement comprises four actuator drives, each side plate having two of the actuator drives mounted respectively on the opposite side surfaces of the first leg.
- 3. The press of claim 1, wherein the actuator drives are arranged in pairs having matched output capacity.
- 4. The press of claim 1, wherein the actuator drives comprise hydraulic cylinders, and further comprising a supply and control system operable to supply pressurizing medium to the hydraulic cylinders.
- 5. The press of claim 4, wherein the supply and control system is structured and arranged so that the hydraulic cylinders can be selectively pressurized with pressurizing medium individually, in pairs, or all together.
- 6. The press of claim 4, wherein the supply and control system has two supply circuits for the pressurizing medium to actuator the hydraulic cylinders.
- 7. The press of claim 4, wherein the supply and control system comprises a control unit and a valve unit for selectively pressurizing the hydraulic cylinders.
- 8. The press of claim 4, wherein the projections of the actuator drives that form the bearing surfaces are integrally formed on a cylinder jacket of each hydraulic cylinder.
- 9. The press of claim 8, wherein the cylinder jackets have a quadrangular shape in external cross-section.
- 10. The press of claim 8, wherein the cylinder jackets have a substantially circular external cross-section.
- 11. The press of claim 4, wherein two hydraulic cylinders are mounted respectively on the opposite side faces of each side plate and are arranged so as to be commonly pressurized with pressurizing medium.
- 12. The press of claim 11, wherein the commonly pressurized hydraulic cylinders are connected to a pressure pipe that extends through an aperture formed in the respective side plate on which the hydraulic cylinders are mounted, the pressure pipe defining a flow passage for supplying pressurizing medium to each of the hydraulic cylinders.
- 13. The press of claim 12, wherein the flow passage of the pressure pipe is connected to pressure chambers of the hydraulic cylinders via connecting passages extending therebetween.
- 14. The press of claim 13, wherein the connecting passages are defined in cylinder end adaptors of the hydraulic cylinders.
- 15. The press of claim 14, wherein at least one cylinder end adaptor has a line connection to the supply and control system.
- 16. The press of claim 1, wherein the actuator drives are affixed to the side plates by one of inserted springs, locating pins, foot mountings, and articulated arrangements.
Priority Claims (1)
Number |
Date |
Country |
Kind |
171/2000 |
Feb 2000 |
AT |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation of International Patent Application No. PCT/AT01/00024 filed Jan. 31, 2001, now inactive.
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
10 180449 |
Jul 1998 |
JP |
Continuations (1)
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Number |
Date |
Country |
Parent |
PCT/AT01/00024 |
Jan 2001 |
US |
Child |
10/211995 |
|
US |