Machining method for valve

A machining and valve body technology, applied in the field of valve body machining, can solve the problems that the dimensional accuracy cannot meet the design requirements, the valve body sealing accuracy is poor, and the positioning error is large, and achieves less workpiece transfer times, high machining accuracy, and error. small effect

Active Publication Date: 2016-05-11
阳泉市煜昌机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of the traditional valve body processing method that the valve body workpiece needs to be clamped on the machine tool many times during the processing process, the positioning error is large, the dimensional accuracy cannot meet the design requirements, and the processed valve body has poor sealing accuracy. , providing a valve body machining method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Valve body machining method in the present embodiment, it comprises the following steps:

[0018] (1) Install the mold of the valve body on the rotary table of the lathe;

[0019] (2) Clamp the valve body casting on the valve body mold;

[0020] (3) Roughly process one end of the valve body casting until it reaches the required size of the process card;

[0021] (4) Finish machining one end of the valve body casting until it reaches the required size of the process card;

[0022] (5) Install the rotating electrode device of the cold welding machine on the tool holder of the lathe, the rotary table of the lathe rotates at the speed of the process card, and use the rotating electrode of the cold welding machine to use the welding core as the lathe tool to seal the valve body casting according to the feed rate of the process card Surfacing welding is carried out on the end face, and the welding thickness required by the process card is met;

[0023] (6) Install the mini...

Embodiment 2

[0027] The valve body machining method of the valve (D343H16C-800) in the present embodiment comprises the following steps:

[0028] (1) Install the mold of the valve body on the rotary table of the lathe (C5116A);

[0029] (2) Clamp the valve body casting on the valve body mold;

[0030] (3) Roughly process one end of the valve body casting until it reaches the required size of the process card (unilateral margin 0.5mm);

[0031] (4) Finish machining one end of the valve body casting until it reaches the required size of the process card (drawing size);

[0032] (5) Install the rotating electrode device of the cold welding machine on the tool holder of the lathe, the rotary table of the lathe rotates according to the speed of the process card (80 rpm), and use the rotating electrode of the cold welding machine to use the stainless steel welding core as the lathe tool according to the process. The amount (0.1mm) is surfacing welding on the sealing end face of the valve body ...

Embodiment 3

[0037] The valve body machining method of valve (Z542T) in the present embodiment, it comprises the following steps:

[0038] (1) Install the mold of the valve body on the rotary table of the lathe (C534J);

[0039] (2) Clamp the valve body casting on the valve body mold;

[0040] (3) Roughly process one end of the valve body casting until it reaches the required size of the process card (unilateral allowance 1.0mm);

[0041] (4) Finish machining one end of the valve body casting until it reaches the required size of the process card (drawing size);

[0042] (5) Install the rotating electrode device of the cold welding machine on the tool holder of the lathe, and the rotary table of the lathe rotates at the speed of the process card (40 revolutions / min), and use the rotating electrode of the cold welding machine to cast the ZHMn58-2-2 brass welding core As a lathe tool, surfacing welding is performed on the sealing end face of the valve body casting according to the feed rat...

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Abstract

The invention relates to a machining method for a valve and belongs to the technical field of machining of valves, aiming at solving the technical problems of conventional machining methods of valves that a valve workpiece needs to be clamped for multiple times in machining, positioning error is large, dimension precision cannot reach design requirements and valve sealing precision is poor. The machining method comprises the following steps: carrying out rough machining on one end of a casting; carrying out finish machining on one end of a valve casting; arranging a cold welding machine rotating electrode on a lathe saddle, wherein a lathe revolving platform rotates according to technical clamping speed, carrying out surfacing on a sealing end face of the valve casting according to the technical clamping feed rate by taking a core wire as a lathe tool by using the cold welding machine rotating electrode to reach a surfacing thickness required by technical clamping; arranging a miniature rotary grinding head on the lathe saddle, and grinding and polishing the sealing end face of the valve casting by using the miniature rotary grinding head so as to reach technical clamping requirements; and turning over the casting to complete machining of the other end. The machining method has the advantages of being high in machining precision, small in errors, less in workpiece transfer times, low in machining cost and low in rejection rate.

Description

technical field [0001] The invention belongs to the technical field of valve body machining, and in particular relates to a valve body machining method. Background technique [0002] The valve is an essential part of fluid transportation. The sealing surface of the valve body must meet the design requirements of the connection. The traditional processing method of the valve body is to complete the machining on the machine tool first, then remove the valve body workpiece and press the process on the valve body sealing surface. The card requires surfacing welding of specified materials, and then it is machined to the size required by the process card, and finally the sealing surface is ground on a grinding machine. However, there will be positioning errors every time the valve body workpiece is re-clamped, which eventually leads to the dimensional accuracy of the valve body workpiece failing to meet the design requirements, thereby affecting the sealing accuracy of the valve. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/001
Inventor 马成敏邓先康
Owner 阳泉市煜昌机械制造有限公司
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