Cutting method and cut article
AssigneeNippon Steel Corporation
InventorsTakashi Yasutomi, Akinobu Kobayashi
Life of this patent
Estimating the term…
Abstract
There is provided a cutting method for cutting a workpiece using a cutting tool comprising a die and a punch, including: arranging the workpiece between the die and the punch, and in a state in which a wedge-shaped first cutting part of the die and a wedge-shaped second cutting part of the punch are opposed, pushing the punch relatively to the die side to cut the workpiece; wherein: a front end angle θ1 of the first cutting part and a front end angle θ2 of the second cutting part are each 10° or more and 120° or less, and a front end radius R1 of the first cutting part and a front end radius R2 of the second cutting part are each 0.5% or more and 35.0% or less of a sheet thickness.
Claims14
A cutting method for cutting a workpiece using a cutting tool comprising a die and a punch, including:
- arranging the workpiece between the die and the punch, and
- arranging a wedge-shaped first cutting part of the die opposite a wedge-shaped second cutting part of the punch, and pushing the punch relatively to the die to cut the workpiece;
- the method further including:
- providing a front end angle (θ1) of the first cutting part and a front end angle (θ2) of the second cutting part, each being 10° or more and 120° or less, and providing a front end radius (R1) of the first cutting part and a front end radius (R2) of the second cutting part, each being 0.5% or more and 35.0% or less of a sheet thickness.
Dependencies are inferred from the claim text.