Method for producing a casting core for manufacturing cylinder heads

Patent metadata

Field	Value
Publication number	US-9993864-B2
Application number	US-201615160333-A
Country	US
Kind code	B2
Filing date	May 20, 2016
Priority date	Feb 28, 2014
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A method for producing a casting core for manufacturing cylinder heads including the following steps: producing at least one core component, by a constructive method, with a contour for the formation of internal contours of a first cylinder head producing at least one further core component, by a constructive method, with a contour for the formation of internal contours of a further cylinder head; producing at least one sprue core component for feeding the molten mass during the casting method; and joining the two core components to the sprue core component in an opposing orientation.

First claim

What is claimed is:

1. A method for producing a casting core for manufacturing cylinder heads, the method comprising the acts of:
generating at least one core component, using a constructive method, with a contour for forming inner contours of a first cylinder head;
generating at least one further core component, using a constructive method, with a contour for forming inner contours of a further cylinder head;
generating at least one sprue core component, for supplying the melt during casting; and
connecting the two core components to the sprue core component in opposite orientations in a lateral direction such that combustion chambers of the first and further cylinder heads are oriented in laterally opposite directions to one another.

2. The method according to claim 1 , wherein the sprue core component is generated by a constructive method.

3. The method according to claim 1 , wherein
the core components have a connecting portion, and the sprue core component has mating connecting portions, and
the core components are fastened, via the connecting portions, on the mating connecting portions of the sprue core component.

4. The method according to claim 3 , wherein the connecting portions of the core components are form-fitting portions, and the mating connecting portions of the sprue core component are mating form-fitting portions.

5. The method according to claim 3 , wherein
the connecting portion of the core components includes a pin-type protrusion, and
the mating connecting portions of the sprue core component include a corresponding depression into which the pin-type protrusion is plugged.

6. The method according to claim 1 , wherein the core components are connected to the sprue core component in opposite orientations of approximately 180°.

7. The method according to claim 1 , wherein the sprue core component has at least one feeder portion.

8. The method according to claim 7 , wherein the sprue core component has at least one air-outlet portion.

9. The method according to claim 1 , wherein inorganic material is used for generating at least one of the core components.

10. The method according to claim 1 , wherein
the lateral direction forms an angle of 90° relative to a downward direction to a base plate of a mold.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Segaud Jean-Marc
• Huber Manfred
• Summer Thomas

Classifications

• B22C9/103 Primary

  Multipart cores · CPC title

• B22C9/22

  Moulds for peculiarly-shaped castings · CPC title

• B22C9/02

  Sand moulds or like moulds for shaped castings · CPC title

• B22C9/10 Primary

  Cores; Manufacture or installation of cores {(breaker cores B22C9/084)} · CPC title

• B22D15/02

  of cylinders, pistons, bearing shells or like thin-walled objects · CPC title