Punching processing method and roll forming die used in this processing method
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United States of America Patent
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Jun 9, 1998
Grant Date -
N/A
app pub date -
Aug 6, 1996
filing date -
Aug 9, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
In a punching processing method, a punch chip having a roller shape is arranged in a punch chip holder rotatable around the vertical axis and can be rotated around the horizontal axis. A die chip having a roller shape is arranged in a die chip holder rotatable around the vertical axis and can be rotated around the horizontal axis. Punching processing of a work is performed, in cooperation with the punch chip and the die chip, by moving the work in the horizontal direction in a state in which the work is held between the punch chip and the die chip. Further, a roll forming die used in this punching processing method is also proposed. Accordingly, it is possible to perform various kinds of punching processings for a short time without causing any seam and easily perform processings of a circle and a curve in addition to processing of only a straight line.
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