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Valve body machining method

A valve body and mechanical processing technology, which is applied in the field of mechanical parts, can solve the problems that the dimensional accuracy of valve body workpieces cannot meet the design requirements, positioning errors, and affect the sealing accuracy of valves, etc., so as to reduce the number of workpiece transfers, simplify the surfacing welding process, and process high precision effect

Inactive Publication Date: 2019-02-05
嘉兴市劼力机械科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there will be positioning errors every time the valve body workpiece is re-clamped, which will eventually cause the dimensional accuracy of the valve body workpiece to fail to meet the design requirements, thereby affecting the sealing accuracy of the valve

Method used

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Embodiment Construction

[0011] A valve body machining method, comprising the following steps:

[0012] The first step: Inspection of the valve body blank: before entering the machining stage, the blank is fully inspected, and the shape misalignment, rough surface, unevenness and loose internal material of the casting are not allowed due to casting reasons If the defect exists, the processing volume of each part of the blank is measured and confirmed, and the problem is repaired in time, and the state can be transferred to follow-up production;

[0013] Step 2: Clamp the valve body blank on the valve body fixture;

[0014] Step 3: Select the common center position of each processing part of the valve body blank: the cross center point in the XYZ direction, that is, the center position of the valve body blank, because the state before processing is a blank, when looking for the common center point, it is necessary to exclude the casting Various unfavorable reasons such as dimensional error, concentric...

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Abstract

The invention discloses a valve body machining method. The valve body machining method comprises the following steps that firstly, a valve body blank is inspected, specifically, all final inspection is conducted on the blank before a machining stage, and shape misalignment, rough surfaces and unevenness which are generated due to the reason of casting and casting interior material loose defects are not allowed; secondly, the valve body blank is clamped on a valve body fixture; thirdly, the common center position of all machining portions of the valve body blank is selected, specifically, the cross center point of the X direction, the Y direction and the Z direction, namely, the center position of the valve body blank is selected; fourthly, one end of the valve body blank is finish-machinedtill the size required by the technological process is achieved; and fifthly, a micro rotating grinding head is installed on a lathe tool rest, and the sealing end face of a valve body casting is ground and polished through the micro rotating grinding head till the technological requirement is met. The valve body machining method has the advantages that the machining precision is high, small errors are generated, the working efficiency is high, the workpiece clamping frequency is low, the workpiece transferring frequency is low, the machining cost is low, and the rejection rate is low.

Description

technical field [0001] The invention relates to the technical field of mechanical parts, in particular to a machining method for a valve body. 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. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/001
Inventor 陈国强
Owner 嘉兴市劼力机械科技有限公司
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