Grinding device for shadow mask support

A cover frame and grinding technology, applied in the field of grinding devices, can solve the problems of low work efficiency, low productivity, increased processing time, etc., and achieve the effect of reducing equipment cost
CN1516216AInactive Publication Date: 2004-07-28PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2004-07-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

After assembling a framework 10 in an approximately rectangular form, a basis plane 17 is formed by grinding a bottom surface of the framework. Then, ends of two opposing sides 12a and 12b of the framework on a side opposite to the basis plane are cut in a predetermined shape by shearing. The grinding can be carried out by placing the framework on a grinding surface that is running, while applying substantially no pressurizing force other than the self weight of the framework. According to this method, precision of forming end faces of a framework on which a shadow mask is mounted can be improved. Also, working time can be shortened.
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Description

technical field

[0001] The present invention relates to a grinding device for a shadow mask frame of a cathode ray tube. In particular, the present invention relates to a device for processing the mounting end surface of a shadow mask, which can be manufactured with extremely high precision when, for example, the ends of the double-sided brackets facing the frame are processed into a curved shape to erect the shadow mask. Cylindricity and curvature of the cylindrical surface formed by the shadow mask surface. Background technique

[0002] The shadow mask is generally erected on a frame assembled into a rectangle by means of welding, etc., and installed in the cathode ray tube. The frame is generally configured such that a pair of long side frames are horizontally secured to upper and lower ends of a pair of spaced apart vertically arranged short side frames. Therefore, the shadow mask is mounted on the screen side ends of the pair of long side frames.

[0003] The shadow ...

Claims

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