Crease device for manufacturing interior sheet metal-less sheet metal creases, has bending angle of one hundred eighty degrees, two pre-crease tools and finished crease tool

摘要

The crease device has a bending angle of one hundred eighty degrees, two pre-crease tools and a finished crease tool. A supporting plate (4) is provided at a vertical edge, at which the sheet metal (3) which is folded for break forming is projected, and has a chamfer (5). An independent claim is also included for a method for manufacturing interior sheet metal-less sheet metal creases.