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Core for a housing of a valve and method for producing said core

A core and shell technology, which is applied in the field of processing the core and casting and forming the core, can solve problems such as high cost

Pending Publication Date: 2022-03-18
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage is the relatively high costs related to tooling costs and piece counts

Method used

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  • Core for a housing of a valve and method for producing said core
  • Core for a housing of a valve and method for producing said core
  • Core for a housing of a valve and method for producing said core

Examples

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Embodiment Construction

[0045] figure 1 Shown is a housing 1 produced according to the invention for a valve designed in the form of a slide, which is cast by means of a core according to the invention which is designed in multiple parts. All of the cores are shown here figure 1 Pressure chambers or pressure medium passages drawn unshaded in . These are: a recess 4 extending in the direction of the longitudinal axis 2, in which a valve body for controlling the pressure medium connection can be accommodated in a longitudinally displaceable manner; a high-pressure chamber 6, which is connected to the pressure medium The source, in particular the pump connection (not shown) of the housing 1 is connected to the pressure medium; the two working pressure chambers 8 , 10 are connected to the corresponding working connection (not shown) of the housing 1 in the pressure medium In connection; two low-pressure pressure chambers or storage tank pressure chambers 12, 14, which are connected by a snap-shaped con...

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Abstract

The invention relates to a core for casting a housing of a valve, said core consisting of core parts, of which at least one first core part (18, 20, 22, 26, 28) is produced in an additive manner and at least one second core part (32) is produced in an alternative manner. The invention further relates to a method for producing the core.

Description

technical field [0001] The invention relates to a core for a valve housing, in particular for casting, according to the preamble of claim 1 and a method for producing the core according to claim 12 . Background technique [0002] For the casting of valve housings, cores, in particular sand cores, are required in order to shape the necessary inner hollow structures, such as for example pressure chambers, in particular pressure medium channels. In particular, in the case of complex channel geometries, the production of sand cores using conventional methods is complex and especially if the sand core has to be composed of several individual parts, this production leads to poor tolerances and leads to Increased cost. [0003] Conventional methods for producing cores or core pieces are, for example, the core-shooting method or manual production in a core box, the so-called cold-box core method. In recent years, there is also a 3D sand printing method, that is, the additive proce...

Claims

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Application Information

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IPC IPC(8): B22C9/24B22C9/10B33Y80/00
CPCB22C9/24B22C9/103B33Y80/00Y02P10/25F16K27/041
Inventor S·乌滕多夫R·雅努施P·贝格曼S·森劳C·维茨贝格尔
Owner ROBERT BOSCH GMBH
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