Fremgangsmåde og indretning til fremstilling af stanseemner med næsten glat og forstørret funktionel overflade

摘要

#CMT# #/CMT# The method involves pressing a knife edged ring (3) into a flat strip (10), where compression stress acts on the strip. State of stress in a cutting zone is adjusted to a position oriented compressive stress during a cutting process in a direction perpendicular to a cutting direction by using a tool element (13) e.g. differential coining stamp, acting parallel to a cutting line provided between a cutting punch (5) and a cutting plate (7) with controlled force depending on part geometry and thickness of a workpiece. A material is pushed in transverse direction in the zone. #CMT# : #/CMT# An independent claim is also included for a device for producing a stamping part with a smooth and enlarged functional surface. #CMT#USE : #/CMT# Method for producing a stamping part i.e. workpiece. #CMT#ADVANTAGE : #/CMT# The method avoids crack at cutting surfaces, and enables fine cutting of thicker parts in economic and effective manner with high process reliability. The method facilitates pushing the material in transverse direction in the cutting zone, thus significantly reducing edge entry at the cutting part, and maintaining state of stress in the cutting zone within the pressure range, and hence enabling the cutting surfaces to be smooth and tear-free. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a device without a free section. 3 : Knife edged ring 4 : Guide plate 5 : cutting punch 6 : Pusher 7 : Cutting plate 10 : Flat strip 13 : Tool element.