Cutting tool
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsRobert Kirschner, Roland Hemper
Life of this patent
Estimating the term…
Abstract
A cutting tool, particularly for steel sheet billets, having a cutting blade fastened to a blade holder and a pressure cushion which is arranged on sides of the blade holder and, when the cutting blade penetrates into the material to be punched, is pressed onto the latter in the area of the useful punched part. During the passage of the cutting blade, a high-quality edge of the useful punched part is largely kept free of an interfering burr and elevation formation by the pressure cushion material being displaced radially outward during the punching stroke, such that the cutting blade is acted upon by pressure in the lateral direction under an increasing elastic deflection of the cutting blade edge.
Claims19
Cutting tool, particularly for steel sheet billets, having a cutting blade fastened to a blade holder and a pressure cushion which is arranged on sides of the blade holder and, when the cutting blade penetrates into a material to be punched, is pressed onto the latter in an area of a useful punched part, wherein, by displacing the pressure cushion material during a punching stroke, the cutting blade is acted upon by pressure in a lateral direction under an increasing elastic deflection of a cutting edge of the cutting blade.
A cutting tool, comprising:
- a blade holder;
- a cutting blade;
- and
- a pressure cushion,
- wherein
- the cutting blade is held by the blade holder, and
- the pressure cushion is arranged against a side of the blade holder and adjacent to the cutting blade, such that during a punching stroke, the pressure cushion is displaced to apply pressure on the cutting blade to elastically deflect a cutting edge of the cutting blade in a direction transverse to the punching direction.
Dependencies are inferred from the claim text.