PROCESS FOR THE PRODUCTION OF LAMINATED CORES AND ELECTROMAGNETIC UNITS PRODUCED THEREFROM

• US 20010001895A1
• Filed: 03/08/1999
• Published: 05/31/2001
• Est. Priority Date: 02/12/1996
• Status: Active Grant

• Current Assignee: thyssenkrupp Transrapid GmbH (Thyssenkrupp AG)
• Original Assignee: Vantico Inc.
• Inventors: HAHN, WOLFGANG, MILLER, LUITPOLD, MOSER, ROLAND, SETIABUDI, FRANS, MOSER, THOMAS, MASSEN, ULRICH, GEHRIG, MICHEL
• Granted Patent: US 6,629,358 B2
• Time in Patent Office: Days
• US Class Current: 29/609
• CPC Class Codes: B60L 13/03 Electric propulsion by linear motors
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: E01B 25/32 Stators, guide rails or slide rails
• CPC Class Codes: H01F 41/0213 Manufacturing of magnetic circuits made from strip(s) or ribbon(s) magnetic cores made by winding a ribbon H01F27/25
• CPC Class Codes: H02K 15/024 with slots
• CPC Class Codes: H02K 41/02 Linear motors; Sectional motors
• CPC Class Codes: Y10S 29/001 Method or apparatus involving adhesive
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine
• CPC Class Codes: Y10T 29/49078 Laminated

Abstract

The invention relates to a method of manufacturing a sheet stack (8) consisting of ferromagnetic material, and/or an assembly including such a sheet stack (8) and at least one further component (12, 13, 14). According to the invention, the sheet stack (8) is assembled from raw magnetic steel sheets, and is positioned in a shaping tool. Thereafter, by means of introducing a mixture into the tool and hardening or hardening out of the mixture, the sheets are surrounded by the mixture and connected together to form the finished sheet stack (8) in a single working step. In order to manufacture the assembly, the sheet stack (8) can be connected in the same working step with the components (12,13,14), and the assembly as a whole can be provided with its final electrical, magnetic, mechanical and/or geometric properties (FIG. 2).

Claims

1. Method of manufacturing a sheet stack (8,51) for electromagnetic assemblies, consisting of ferromagnetic material, characterised in that the sheet stack (8,51) is assembled from raw magnetic steel sheets (1,52) and is positioned, if necessary with the use of positioning aids, in a shaping tool (28,29), and in that the sheets (1,52) by means of introduction of a hardenable mixture into the tool (28,59) and hardening or hardening out of the casting compound, are then totally surrounded with the mixture and connected together to form the finished sheet stack (8,51) in one single working step.

4. Method according to one of

claims 1

to

3

, characterised in that the tool (28,59) is at least partly evacuated before introduction of the mixture.

5. Method according to

claims 1

to

4

, characterised in that it is carried out as a pressure-gelating method.

6. Method according to one of

claims 1

to

5

, characterised in that at least one section of the sheet stack (8,15) and/or of the component (12-14, 53-56) is used for mounting a positioning member upon its introduction into the tool (28,59).

7. Method according to

claim 6

, characterised in that a spacer member (73) produced from a porous material is used as a positioning member.

8. Method according to one of

claims 1

to

7

, characterised in that a thermally hardenable mixture is used as a hardenable mixture.

9. Method according to one of

claims 1

to

8

, characterised in that raw non-pre-treated sheets (1,52) are used to produce the sheet stack (8,51), and the mutual electrical insulation between the sheets (1,52) is produced by application of a hardenable mixture with electrically insulating properties.

10. Sheet stack, characterised in that it is manufactured by the method according to one of

claims 1

to

9

.

2. Method of manufacturing an electromagnetic assembly (45,71) including at least one sheet stack (8,51) consisting of ferromagnetic material and one further component(12-14, 53-56), characterised in that the sheet stack (8,51) is assembled from raw magnetic steel sheets (1,52), and is positioned together with the further components(12-14, 53-56), if necessary with the use of positioning aids, in a tool(28, 59), and in that then, by introduction of a hardenable mixture into the tool(28,59) and hardening or hardening out of the mixture, in one single working step the sheets(1,52) are surrounded with the mixture and connected together to produce the finished sheet stack (8,51), and the sheet stack (8,51) is connected to the components(12-14, 53-56).

3. Method according to

claim 2

, characterised in that the assembly (45,71) as a whole is provided only by the mixture with its final electrical, magnetic, mechanical and/or geometric properties.

11. Assembly, characterised in that it is manufactured by the method according to one of

claims 2

to

9

.