PROCESS FOR PRODUCING CYLINDRICAL COMPONENTS

• US 20130160964A1
• Filed: 12/22/2012
• Published: 06/27/2013
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: MAGNA BDW Technologies GmbH (Magna International Incorporated)
• Original Assignee: MAGNA BDW Technologies GmbH (Magna International Incorporated)
• Inventors: HAHN, Rocco, HERRMANN, Christian, NIEDERMEIER, Korbinian, WEIZENBECK, Richard
• Granted Patent: US 8,978,733 B2
• Time in Patent Office: Days
• US Class Current: 164/69.1
• CPC Class Codes: B22D 31/002 Cleaning, working on castings
• CPC Class Codes: B23P 15/00 Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
• CPC Class Codes: F02F 1/00 Cylinders; Cylinder heads

Abstract

A process for producing a rotationally symmetrical cast aluminium component by die casting, which is reworked partially on its inner and/or outer lateral surfaces. At least a part of the lateral surfaces is not treated and is used as a non-positively locking bearing surface for installation in an assembly and also for bracing the component.

Claims

1. A process for producing a rotationally symmetrical cast aluminium component by die casting, the process comprising:

reworking the component partially on inner and/or outer lateral surfaces of the component,

wherein at least a part of the lateral surfaces remains unmachined and is used both as a non-positively locking bearing surface for bracing the component and also for installation in an assembly.

2. The process of claim 1, wherein the component is braced by round bracing using a bracing tool.

3. The process of claim 2, wherein the round bracing is effected both by bracing on bearing surfaces of the component on the inner lateral side of the component and also by bracing on the outer lateral surface of the component.

4. The process of claim 2, wherein the round bracing permits machining which is optimized for later installation in a relatively large assembly.

5. The process of claim 1, wherein the bearing surfaces of the component are formed by tooth flanks of an internal toothing system.

6. The process of claim 5, wherein the tooth flanks which serve as a bearing surface define the positioning of the component on a support surface.

7. The process of claim 6, wherein the component is positioned at least in a machining process by way of an acquisition by measurement.

8. The process of claim 1, wherein the positioning of the component is effected by way of lugs cast onto the component.

9. A process for producing a rotationally symmetrical cast aluminium component by die casting, the process comprising:

casting the component from an aluminium alloy, wherein the component has at least one lug on a peripheral surface thereof;

applying a code to the component which is configured for reading by a sensor;

positioning the component on a workpiece carrier in a specific machining position defined by the at least one lug and the code;

machining the component partially on inner and/or outer lateral surfaces thereof,

wherein at least a part of the lateral surfaces are not machined and is used both as a non-positively locking bearing surface for bracing the component during machining and also for installation in an assembly.

10. The process of claim 9, wherein the casting mould comprises a central core and an outer mould, in which the at least lug is provided.

11. The process of claim 9, wherein the component is braced by round bracing using a bracing tool.

12. The process of claim 11, wherein the round bracing is effected both by bracing on bearing surfaces of the component on the inner lateral side of the component and also by bracing on the outer lateral surface of the component.

13. The process of claim 11, wherein the round bracing permits machining which is optimized for subsequent installation of the component in an assembly.

14. The process of claim 9, wherein the bearing surfaces of the component are formed by tooth flanks of an internal toothing system.

15. The process of claim 14, wherein the tooth flanks which serve as a bearing surface define the positioning of the component on a support surface during machining.

16. The process of claim 15, wherein the component is positioned during the machining by way of an acquisition by measurement.

17. The process of claim 9, wherein the positioning of the component is effected by way of the lugs.