Surface texturing of deforming tools

Patent metadata

Field	Value
Publication number	US-10864565-B2
Application number	US-201515531030-A
Country	US
Kind code	B2
Filing date	Oct 21, 2015
Priority date	Nov 28, 2014
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A method of producing a deforming tool ( 2 ) having a structured embossing surface ( 4 ) which can be brought into contact with a surface of a substrate ( 1 ) for plastic deformation of the substrate, includes the steps of determining a target structure to be produced on the substrate ( 1 ); geometrically distorting the target structure, such that an embossing image structure is obtained; inverting the embossing image structure, such that the embossing structure for the embossed surface ( 4 ) is obtained; and producing the embossing surface ( 4 ) of the deforming tool ( 2 ) according to the embossing structure.

First claim

The invention claimed is:

1. A method of producing a deforming tool ( 2 ) having a structured embossing surface ( 4 ) which is brought into contact with a surface of a substrate ( 1 ) for plastic deformation of the substrate, the method comprising:
determining a target structure to be produced on the substrate ( 1 );
geometrically transforming the target structure along at least one main direction along which the substrate is deformed during the plastic deformation, such that an embossing image structure is obtained;
inverting the obtained embossing image structure, such that an embossing structure for the structured embossing surface ( 4 ) is obtained; and
producing the deforming tool ( 2 ) having the structured embossing surface ( 4 ) comprising the obtained embossing structure.

2. The method according to claim 1 ; characterized in that the target structure is defined by a transfer function the parameters of which comprise the embossing structure and one or more process parameters.

3. The method according to claim 2 ; characterized in that one or more of the process parameters describe the deformation behavior of the substrate ( 1 ) during the plastic deformation along one or more main directions.

4. The method according to claim 3 ; characterized in that the process parameters are comprised of at least one of the following parameters: a flow tension of the substrate ( 1 ), a geometric parameter of the embossing surface ( 4 ), an elongation of the substrate ( 1 ) in the deformation along a main direction, an embossing speed, a tension along the one or more main directions during the deformation, and a coefficient of friction between the embossing surface ( 4 ) and the substrate ( 1 ).

5. The method according to claim 1 ; characterized in that the deforming tool ( 2 ) comprises a working roll ( 30 ).

6. The method according to claim 5 ; characterized in that the target structure is described by a transfer function the parameters of which are comprised of the embossing structure and at least one of, the following parameters: a flow tension of the substrate ( 1 ), a diameter of the working roll ( 3 ), an elongation of the substrate ( 1 ) along the rolling direction, a rolling speed, the substrate tension at an entrance to the working roll ( 3 ), the substrate tension at an exit from the working roll ( 3 ), and the friction in the roll gap.

7. The method of claim 5 , wherein the deforming tool comprises a dressing roll.

8. The method according to one claim 1 ; characterized in that the substrate ( 1 ) is a sheet or plate, preferably a sheet or plate of metal.

9. The method according to claim 1 ; characterized in that the embossing structure has an anisotropic characteristic, wherewith the corresponding characteristic in the target structure is isotropic.

10. The method according to claim 1 ; characterized in that the embossing surface ( 4 ) is produced by at least one of the following techniques: shot blast texturing (SBT), electrical discharge texturing (EDT), laser texturing (LT), electron beam texturing (EBT), and Pretex texturing.

Assignees

• Sms Group Gmbh

Inventors

• Kohlrausch Arnt
• Pawelski Hartmut
• Schellmann Markus

Classifications

• B21H8/00

  Rolling metal of indefinite length in repetitive shapes specially designed for the manufacture of particular objects {, e.g. checkered sheets} · CPC title

• B21B27/00 Primary

  Rolls, {roll alloys or roll fabrication}(shape of working surfaces required by special processes B21B1/00); Lubricating, cooling or heating rolls while in use · CPC title

• Y10T29/4956

  Fabricating and shaping roller work contacting surface element · CPC title

• B31F1/07

  Embossing {, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles}({B31F1/128 takes precedence;} corrugating B31F1/20; embossing in combination with printing B41F19/02, B41M1/24; typewriters for embossing B41J3/38; stamping in combination with deforming B41K3/36) · CPC title

• B21B27/005 Primary

  Rolls with a roughened or textured surface; Methods for making same · CPC title