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Method for producing base body of valve housing of hydraulic control valve and valve housing having base body

A technology for hydraulic control valves and valve housings, which is applied to valve housing structures, manufacturing tools, multi-way valves, etc., and can solve problems such as high cost of valve housings

Active Publication Date: 2021-01-12
ZF FIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manufacture of the valve housings in the prior art is therefore complex and involves several processing steps

Method used

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  • Method for producing base body of valve housing of hydraulic control valve and valve housing having base body
  • Method for producing base body of valve housing of hydraulic control valve and valve housing having base body
  • Method for producing base body of valve housing of hydraulic control valve and valve housing having base body

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Experimental program
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Embodiment Construction

[0030] exist figure 1 The main body 100 of the valve housing 105 is partially shown in a cross-sectional illustration. The base body 100 or the valve housing 105 forms part of a hydraulic control valve (not shown) for example for a shifting device of an automatic transmission of a vehicle, in particular a passenger motor vehicle.

[0031] figure 1The base body 100 shown is formed from an aluminum casting and has a valve piston chamber 110 designed as a blind bore, the valve piston not shown being mounted axially displaceable in the piston direction and / or in the longitudinal axis L In the valve piston chamber; and couplings in the form of valve recesses 120 , 130 , 140 and 150 . Bore or valve piston chamber 110 extends transversely through valve recesses 120 , 130 , 140 and 150 (or valve recesses 120 , 130 , 140 and 150 extend transversely to valve piston chamber 110 ) and has multiple sections of different diameters. Reference numeral 160 designates a flange surface for co...

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Abstract

The invention relates to a method for producing a base body for a valve housing of a hydraulic control valve, wherein an end-side section of a control edge is produced in an original base body for thebase body in an end-side processing step by means of a separation method, and a separating tool is guided from the coupling side through the processing valve recess to the end-side section of the control edge.

Description

technical field [0001] The invention relates to a method for producing a base body for a valve housing of a hydraulic control valve having the features of claim 1 . Furthermore, the invention relates to a valve housing with a base body. Background technique [0002] Valve housings for hydraulic control valves usually have a plurality of control pistons, wherein each of these control pistons passes through a certain number of valve recesses and can be disconnected and communicated depending on the axial position of the control pistons A connection in a fluid sense. Valve housings are usually designed as die-cast housings and can therefore be produced cost-effectively, especially in mass production. However, the active surface between the control piston and the actual valve housing must be produced with a production accuracy which cannot be achieved by means of die-casting methods. Therefore, reworking or final machining of the active surface is often required. [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/07F16K27/04
CPCF16K11/07F16K27/041B23K26/38F16K11/0716
Inventor P·毛雷尔H·斯科尔
Owner ZF FIEDRICHSHAFEN AG