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Method for manufacturing thin-wall metal semi-spherical shell with seam allowance

A metal material and manufacturing method technology, applied in the field of thin-walled metal material hemispherical shell manufacturing, can solve problems such as difficulty in forming, surface quality is difficult to meet use requirements, etc., and achieve the effect of good wall thickness consistency

Inactive Publication Date: 2014-06-11
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Abstract
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  • Application Information

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Problems solved by technology

However, some difficult-to-process high-melting point metal materials, such as tungsten, molybdenum, tantalum, etc., use conventional machining methods such as turning and milling to thin-walled metal spherical shells, not only difficult to form, but also difficult to meet the use requirements on the surface quality

Method used

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  • Method for manufacturing thin-wall metal semi-spherical shell with seam allowance
  • Method for manufacturing thin-wall metal semi-spherical shell with seam allowance

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] figure 1 It is a structural schematic diagram of a metal hemispherical shell with a seam in the present invention, figure 2 It is a process flow diagram of the thin-walled metal hemispherical shell with spigot in the present invention. From figure 1 , 2 It can be seen from the figure that a tungsten hemispherical shell with a diameter of about 3 mm and a wall thickness of (100-200) μm is manufactured by using a method for manufacturing a thin-walled metal hemispherical shell with a stopper of the present invention. The detailed preparation process is as follows: roughly machining a solid tungsten ball with a diameter of about 3mm, and polishing the surface of the ball into a mirror surface through a four-axis full ball mill. The grinding process parameters are as follows: grinding abrasive: diamond; particle size: W1; Pressure: (100~150) g; ...

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Abstract

The invention provides a method for manufacturing a thin-wall metal semi-spherical shell with a seam allowance. The method comprises the steps of machining a solid metal ball, grinding and polishing the metal ball by adopting a four-axis ball body grinding method, cutting a metal semi-spherical shell through WEDM (Wire cut Electrical Discharge Machining), processing an inner semi-spherical surface by adopting EDM (Electrical Discharge Machining), correcting the wall thickness of the semi-spherical shell through a micro-CT and a small semi-spherical surface grinding technology, processing the seam allowance through EDM-mill, and obtaining the thin-wall difficult-to-process metal semi-spherical shell with the seam allowance. By adopting the method provided by the invention, the processing on an ultra-hard difficult-to-process metal material can be realized.

Description

technical field [0001] The invention belongs to the field of precision cutting and micro electric discharge machining, and in particular relates to a method for manufacturing a hemispherical shell of thin-walled metal material with a seam. Background technique [0002] Precision spheres are important components in roundness meters, gyroscopes, bearings, and precision measuring instruments. In the electrostatic gyroscope, the hollow spherical rotor is the core component of the electrostatic gyroscope. Its quality and precision are important factors that directly affect the overall accuracy of the electrostatic gyroscope (positioning accuracy and navigation accuracy). In the state, it can guarantee a small sphericity error and mass imbalance, the sphericity error is below 0.05μm, and the surface roughness is below 25nm; in measuring equipment such as roundness meters, precision spheres are often used as the benchmark for precision measurement; In inertial confinement fusion r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 谢军张昭瑞张海军黄燕华魏胜陶洋朱磊刘峰李国宋成伟王红莲童维超李朝阳梅鲁生袁光辉
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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