Method for producing a metal machining tool and metal machining tool produced thereby

Patent metadata

Field	Value
Publication number	US-11478959-B2
Application number	US-201716318159-A
Country	US
Kind code	B2
Filing date	Jun 27, 2017
Priority date	Jul 21, 2016
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A method for producing a first mold element for a metal machining tool, wherein the first mold element is configured as a holding-down mechanism, for producing the first mold element, a main body made of plastics material is provided, wherein a surface of the main body is subdivided into a plurality of regions, on at least one region of the surface of the main body, at least one casting mold is arranged, wherein the at least one casting mold and the at least one region of the surface enclose at least one cavity, which forms a negative mold for a layer of plastics material to be applied, wherein plastics material is filled into the at least one cavity and cured, wherein the plastics material in the at least one region is connected to the surface of the main body and applied to it, forming the layer.

First claim

The invention claimed is:

1. A method comprising:
providing a main body, wherein a surface of the main body is subdivided into a plurality of regions;
arranging, on at least one region of the surface of the main body, at least one casting mold, wherein the at least one casting mold and the at least one region of the surface of the main body enclose at least one cavity;
applying a layer of plastics material to the at least one region, wherein the layer of the plastics material is filled into the at least one cavity and cured;
applying the layer of the plastics material in the at least one region to the surface of the main body, thereby forming a first mold element for a metal machining tool.

2. The method according to claim 1 , further comprising:
applying a plurality of layers of plastics material, which differ from each other in terms of at least one material property, on at least two different regions of the surface of the main body.

3. The method according to claim 1 , wherein the plastics material has at least one material property, wherein the at least one material property is at least one of a spring hardness of the plastics material, a spring rate of the plastics material, a n elasticity modulus of the plastics material, a coefficient of friction of the plastics material, and a thickness of the layer of the plastics material.

4. The method according to claim 1 , further comprising:
processing the at least one region before arranging the at least one casting mold.

5. The method according to claim 1 , further comprising:
casting the main body using the at least one casting mold.

6. The method according to claim 1 , further comprising:
providing a second mold element made of steel that is configured as a counter piece to the first mold element.

7. The method according to claim 1 , further comprising:
applying the plastics material to the at least one region of the surface of the main body.

8. The method according to claim 1 , further comprising:
in the at least one region of the surface of the main body, removing the plastics material to form a recess; wherein the at least one casting mold and the recess at the at least one region of the surface enclose the at least one cavity;
filling the plastics material into the at least one cavity; and
curing the filled plastics material, wherein the cured plastics material is connected to the surface of the main body.

9. The method according to claim 2 , wherein the plastics material has at least one material property, wherein the at least one material property is at least one of a spring hardness of the plastics material, a spring rate of the plastics material, an elasticity modulus of the plastics material, a coefficient of friction of the plastics material, and a thickness of the layer of the plastics material.

Assignees

• Audi Ag

Inventors

• Canti Robert
• Sanhieter Stefan
• Disch Christian
• Noneder Johannes

Classifications

• B29C39/10

  incorporating preformed parts or layers, e.g. casting around inserts or for coating articles {(coating a surface by casting in general B05D1/30, B29C39/126 takes precedence)} · CPC title

• B29C39/021 Primary

  by casting in several steps · CPC title

• B21D37/01 Primary

  Selection of materials · CPC title

• B29L2031/757

  Moulds, cores, dies · CPC title

• B23P15/24

  dies (B21C3/18, B21C25/10, B21D37/20 take precedence) · CPC title