Machining method for valve element of reversing valve

A processing method and reversing valve technology, applied in the field of valve components, can solve the problems of enterprise loss, reduced service life of the reversing valve, imperfect processing method of the reversing valve spool, etc., so as to improve the overall service life and the quality of the spool. Good and loss-reducing effect

Inactive Publication Date: 2015-11-11
WUXI YANGGONG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a valve that realizes the communication, cutting and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control. However, in the prior art, the service life of the reversing valve as a whole is reduced due to the imperfect processing method of the spool of the reversing valve. , causing unnecessary losses to the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A method for processing a reversing valve spool according to an embodiment of the present invention includes the following steps:

[0016] 1) Saw the blank according to the size of the reversing valve;

[0017] 2) Heat treatment of the blank, first annealing, then quenching and high temperature tempering;

[0018] 3) Carry out rough machining on the heat-treated billet, rough turn the outer circle, drill the inner hole, leave a machining allowance of 1.6-1.9mm on one side, and make the valve core semi-finished product;

[0019] 4) Finishing the semi-finished valve core, finishing the outer circle and inner hole; processing grooves, threads and chamfers at the same time;

[0020] 5) Drill the installation holes on the end face and the liquid holes evenly distributed around the circumference to remove the burrs at the intersection;

[0021] 6) Blacken, galvanize or chrome-plate the finished parts;

[0022] 7) Make the finished valve core and pack it into the warehouse....

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PUM

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Abstract

The invention discloses a machining method for a valve element of a reversing valve. The method includes the steps that firstly, a blank is obtained in a sawn manner according to the size of the reversing valve; secondly, the blank is thermally treated, annealing is performed firstly, and then quenching and high-temperature tempering are performed; thirdly, the thermally-treated blank is roughly machined, the outer circle is roughly turned, an inner hole is drilled, the single-side remaining working allowance ranges from 1.6 mm to 1.9 mm, and a semi-finished product of the valve element is manufactured; fourthly, the semi-finished product of the valve element is finely machined, the outer circle and the inner hole are finely machined, and meanwhile a groove, a thread and chamfers are machined; fifthly, an end face installation hole and liquid flow holes circumferentially and evenly distributed are drilled, and meanwhile, intersection burrs are removed; sixthly, the finely-machined product is blackened or galvanized or plated with chromium; and seventhly, the finished product of the valve element is manufactured and packaged to be put into storage. The machining method is complete, the valve element prepared through the machining method is good in quality, the overall service life of the reversing valve is prolonged, cost is reduced, and losses are reduced for an enterprise.

Description

technical field [0001] The invention relates to the field of valve components, in particular to a method for processing a spool of a reversing valve. Background technique [0002] The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. It is a valve that realizes the communication, cutting and reversing of hydraulic oil flow, as well as pressure unloading and sequential action control. However, in the prior art, the service life of the reversing valve as a whole is reduced due to the imperfect processing method of the spool of the reversing valve. , causing unnecessary losses to the enterprise. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a method for processing the spool of a reversing valve. The processing method is perfect, and the quality of the spool prepared by this method is good, which improves the overall service life of the reversing valve a...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/001
Inventor 杨龙兴
Owner WUXI YANGGONG MACHINERY MFG
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