Method and apparatus for producing a threaded projection on a plate-shaped workpiece
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United States of America Patent
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-
Sep 12, 2006
Grant Date -
Oct 14, 2004
app pub date -
Mar 15, 2004
filing date -
Mar 15, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method, machine system and thread cutting device for producing a threaded projection on a plate-shaped workpiece and in particular on a sheet-metal workpiece. A workpiece lug (2) is cut with a threaded contour in the principal plane of the workpiece and at least a section of the workpiece lug (2) featuring at least one threaded contour (5, 6) is permanently bent in the form of a threaded projection extending at the desired angle relative to the principal plane of the workpiece. A machine system (9) for implementing the method encompasses a cutting device for the relief cutting of workpiece lugs (2) as well as a thread cutting device. Also included is a bending device (15) by means of which at least a section of the workpiece lug (2) provided with at least one threaded contour (5, 6) can be permanently bent relative to the principal plane of the workpiece. A thread cutting device of the machine system (9) is appropriately configured for that purpose.
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