| 摘要 |
It is an object of this invention to use only one die for forming an excessively bent negative angle forming portion when negative angle forming is carried out on formed thin sheets using rotating cams. This is a forming die with a forming portion to achieve a negative angl e when the second die is moved in the straight line to abut the first die for forming thin sheets, and in the thin sheet forming dies in which a cylindric al rotating cam with a groove formed in the axial direction is rotatably mounte d to the first die, a negative angle forming portion is formed in the groove edge portion of the rotating cam, a slide cam with the negative angle forming portion is mounted to the second die in such a manner to be opposite to the said rotating cam, an automatic return device for rotating and retracting the rotating cam to enable the removal of the work from the first die after forming is mounted to the first die, it is a thin sheet forming die designed to process an excessively bent negative angle forming portion with a plurality of rotating cams, the rotation axis positions of which differ and are parallel to one another.
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