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Method for making a knife with a finger rest

A blade and forging molding technology, which is applied in the field of manufacturing knives, can solve problems such as insufficient molding filling, unstable processes, etc., and achieve the effects of reducing manufacturing time, saving costs, and reducing waste products

Active Publication Date: 2016-01-27
ZWILLING J A HENCKELS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Forging can thus lead to insufficient shape filling and thus to an unstable process, resulting in higher quantities of scrap

Method used

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  • Method for making a knife with a finger rest
  • Method for making a knife with a finger rest
  • Method for making a knife with a finger rest

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] In order to manufacture the knife 1 with the blade 2, the finger rest 3 and the handle 4 (on which the handle shell will be fixed in the future), a piece of flat material 5 made of steel is upset in a known manner in the middle region Forged into a raised portion 6. In the known method here, the longitudinal axis LW of the projection 6 which will form the finger support 3 and the two side edges R1 and R2 of the projection 6 are arranged at right angles to the longitudinal axis LF of the flat material 5 . If a finger support 3 is to be produced which is arranged obliquely with respect to the longitudinal axis LM of the knife, the material of the projection 6 is significantly stressed during the subsequent forging of the flat material 5 into the knife 1 . In such an inclined finger rest, at least the finger rest side edge K1 facing the cutting edge 2 is inclined to the knife longitudinal axis LM or to the knife longitudinal direction and the finger rest extends with a reg...

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PUM

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Abstract

The invention relates to a method for producing a knife (1) with a blade (2), a bolster (3) and a handle, in particular a tang (4), forged from a single piece of flat steel material (5), wherein, before forging, the flat material (5) is upset in the region between the blade (2) and the handle or tang (4) to form a bead (6), the longitudinal axis (LW) of which is arranged transversely in relation to the longitudinal axis (LM) of the knife, and is then formed by forging to form a bolster (3), which has at least one side edge (K2) positioned obliquely in relation to the longitudinal axis (LM) of the knife, wherein the longitudinal axis (LW) of the bead (6), which later forms the bolster, is oriented obliquely in relation to the longitudinal axis (LM) of the knife (1).

Description

technical field [0001] The invention relates to a method for manufacturing a knife. Background technique [0002] In order to manufacture knives with finger rests / knobs (Kropf), it is known to forge a knife from a single piece of flat material which is first upset into a raised portion in said region, which is then subsequently forged. The forging is formed into a finger support. If the fingers are to be inclined to the longitudinal axis of the knife, or to the longitudinal direction of the knife, high deformations must be provided during forging, since large quantities of material have to be driven into the body of the knife. Forging can therefore lead to insufficient shape filling and thus to an unstable process, resulting in high quantities of rejects. Contents of the invention [0003] The object of the invention is to improve a method of the type mentioned at the outset in such a way that the volume of the bead is predistributed so well that an optimum material quan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/64
CPCB21D53/64
Inventor J·德勒泽
Owner ZWILLING J A HENCKELS AG