Metal working – Method of mechanical manufacture – Shaping one-piece blank by removing material
Reexamination Certificate
2001-06-18
2003-05-13
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Shaping one-piece blank by removing material
C083S877000, C083S049000
Reexamination Certificate
active
06560848
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method for forming a micro groove on a mold used at a PDP partition manufacture, and more particularly to a method for forming a micro groove on a PDP mold by preparing the PDP mold using a steel-based mold and rotating a CBN metal bond blade at a high speed to form the micro groove on a surface of the PDP mold at multiple steps, thereby increasing a precision thereof and reducing a manufacturing cost.
2. Description of the Related Art
Generally, copper or brass is used to make a mold for forming a partition of a plasma display panel (PDP), and the mold made of copper or brass is formed with a groove having a shape opposite to that of the partition of the PDP by a shaping process.
Since the lifetime of the mold made of copper or brass is relatively short, however, the manufacturing cost increases. Therefore, it is improper to employ such a mold to form the partition, in view of a general tendency of a large-sized screen of the PDP.
SUMMARY OF THE INVENTION
Therefore, in order to solve the problem involved in the prior art, it is an object of the present invention to provide a method for forming a micro groove on a PDP mold by preparing the PDP mold using a steel-based mold, wherein the method is applied to the mold for manufacturing a PDP partition according to a tendency of a large-sized screen of the PDP, thereby increasing a precision thereof and reducing a manufacturing cost.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method for forming a micro groove on a PDP mold by preparing the PDP mold using a steel-based mold and rotating a cubic boron nitride (CBN) blade at a high speed above 30,000 rpm to form the micro groove on a surface of the PDP mold.
The method for forming a micro groove on the PDP mold comprises the steps of: primarily cutting a rectangular micro groove on the mold using a super precise CBN blade for manufacturing the PDP partition made of steel; and secondarily cutting the micro groove formed at the primary step using other blade to have a trapezoid shape or a deep rectangular shape, or removing a V-shaped burr.
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Bryant David P.
Notaro & Michalos P.C.
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