Machining method for fuel element special-shaped parts

A processing method and technology of fuel elements, which are applied in the field of processing special-shaped parts of fuel elements, can solve the problems of unstable processing accuracy, low processing efficiency, low processing efficiency, etc., and achieve favorable and improved surface quality and dimensional accuracy of workpieces. Processing efficiency and effect of eliminating errors

Inactive Publication Date: 2019-07-26
CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide a processing method for special-shaped parts of fuel elements, which solves the problems of low processing efficiency, low tool life, unstable processing accuracy, lengthy and complicated procedures caused by multiple clamping during processing. Problems such as underground processing efficiency

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  • Machining method for fuel element special-shaped parts

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with specific embodiments.

[0041] The special-shaped component is a special-shaped revolving body, the lower part is a hollow truncated cone-shaped base, and three 360° uniformly distributed claw-shaped structures are connected to the base. The front end of the claw-shaped structure is a trapezoidal structure, and the rear part has 6 tooth-shaped structures with different gaps. There are 2 tapered holes on the tooth-shaped structure. The tapered holes on the 6 tooth-shaped structures are concentric holes with diameters from outside to inside. Decrease sequentially.

[0042] The steps of the processing method of the fuel element special-shaped parts of the present invention are as follows:

[0043] Step 1: Clamp the cylindrical blank on the chuck of the five-axis machining center for correction, and prepare the tool for processing;

[0044] Step 2: Remove a large amount by plunge milling on the five-axis m...

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Abstract

The invention belongs to the technical field of manufacturing of nuclear fuel elements, and particularly relates to a machining method for fuel element special-shaped parts. The method comprises the steps that 1, a cylindrical blank is clamped on a five-axis machining center chuck for correction, and tool setting is carried out for machining; 2, a large amount is removed on a five-axis machining center in an insert milling mode; 3, on the five-axis machining center, a workpiece is clamped on an indexing head and roughly and finely milled to obtain 120-degree three equal-part teeth; and 4, drilling and tapping are carried out on the machining center, and a screw is used for trial assembly to verify the depth of a taper hole. The problems that in the machining process, the machining efficiency is low, the tool service life is short, machining precision is unstable due to repeated clamping, and the machining efficiency is low since working procedures are long and complicated are solved.

Description

Technical field [0001] The invention belongs to the technical field of nuclear fuel element manufacturing, and specifically relates to a method for processing special-shaped parts of a fuel element. Background technique [0002] This special-shaped part is a nuclear fuel element, and there are no reports in related fields. As a structural part for fixing fuel pipes in nuclear fuel, this component is an important part of nuclear fuel product production. In the traditional processing technology, in order to complete the processing of the product, drill the center hole through the blank, remove a large amount and mill the teeth, a total of more than 10 procedures are completed, such as turning, milling, and fitter. It involves multiple workpiece re-clamping and alignment, and there is accumulated error. Moreover, some procedures require manual processing by the processing personnel, which increases the processing experience and processing technology requirements of the operator, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 冯海宁郧勤武蔡振方钱跃庆姬鹏波聂皓皇泽中侯旺
Owner CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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