Metal deforming – By use of non-deforming work-gripping clamp and relatively... – With cutting
Reexamination Certificate
1999-07-02
2001-02-13
Crane, Daniel C. (Department: 3725)
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
With cutting
C072S322000, C072S332000, C072S420000
Reexamination Certificate
active
06185974
ABSTRACT:
DESCRIPTION
The present invention refers to a machine for machining metal sheets. In particular the invention refers to a machine for punching and bending metal sheets.
Machining of metal sheets requires various distinct operations, in particular punching of the sheets, possibly shearing of the comers, and bending to form a panel having the desired shape.
Currently there are available punching machines, corner shearing machines and bending machines also known as “panelling machines” for bending sheets.
Such machines are distinct from each other. This obviously involves high purchase costs, and slowness of the machining process, since the metal sheets that are not machined yet, or semi-finished or finished ones must be loaded and unloaded from a machine in order to go on to the following machining stage.
In view of the state of the art described, object of the present invention has been to provide a single machine for machining metal sheets, which is capable to carry out the several operations that are currently carried out by different machines.
According to the present invention, such object has been attained by a machine for machining metal sheets, comprising a bending machine for bending sides of a metal sheet and a manipulator-rotator that is mobile in relation to the bending machine for automatic positioning of the metal sheet during bending, characterised in that it comprises at least one punching press for punching said metal sheet that is served by said manipulator-rotator so that said manipulator-rotator is utilised for automatic positioning of the metal sheet both during bending and during punching of the metal sheet.
The present invention provides for a single machine capable to carry out all the operations necessary for machining metal sheets. As compared with the known technique, in which lines of different machines such as punching and bending machines are provided, the machine according to the present invention has a lower cost: all the machining stages are concentrated in a single machine. The machine according to the invention has also a reduced dimension as compared with a line with different machines, and the power consumption is also lower. In addition machining time is also reduced.
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patent: 0 103 885 (1984-03-01), None
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patent: WO 94/01234 (1994-01-01), None
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