Data processing: generic control systems or specific application – Specific application – apparatus or process – Product assembly or manufacturing
Reexamination Certificate
1998-12-31
2001-06-12
Grant, William (Department: 2121)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Product assembly or manufacturing
C356S389000, C250S559190
Reexamination Certificate
active
06246921
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to a concentricity processing apparatus and method and, more particularly, to a concentricity processing apparatus and method for processing the concentricity of the outer diameter and the outer block of a ferrule for optical communication, a wire bonding capillary, and other minute inside diameters (200 &mgr;m).
2. Related Art
In general, concentricity is manually processed by inserting a pin or a wire into the minute inside diameter. More specifically, such techniques involve the fixing of the center of a product to be processed on a tail stock, or the insertion of a cylindrical pin into a hole corresponding to the inner diameter of the product. The product is then rotated and its outer diameter is machined.
However, there are at least two problems with such a technique: first, the scope of processing is limited in that products having a minute inner diameter, a tapered inner diameter or an inner diameter of complex shape cannot be processed; second, the level of precision is limited, and this is a problem when a pair of tail stocks which are not concentrically aligned is used.
SUMMARY OF THE INVENTION
To solve the above problems, it is an object of the present invention to provide a method for measuring concentricity which can be used for a processing apparatus.
It is another object of the present invention to provide a concentricity processing apparatus using a vision system and a method therefor which solve the above problems and increase processing precision and productivity.
Accordingly, to achieve the first object, there is provided a method for measuring concentricity in a vision system which comprises a motor for rotating a product or subject to be processed, a photographing unit for photographing a product or subject to be processed, and a display unit for displaying the photographed product or subject to be processed. The method comprises the steps of (a) loading a product or subject to be processed into loading means connected to the motor, (b) photographing the section of the loaded subject to be processed and displaying an inside diameter on the display means on the basis of the photographed section, (c) rotating the subject to be processed by a predetermined rotation angle using the motor, (d) photographing the section of the rotated subject to be processed and displaying the inside diameter on the display means, (e) obtaining a track of the inside diameter of the subject to be processed and displaying it on the display means by repeating the steps (c) and (d), and (f) obtaining a concentricity using the diameter of the track of the inside diameter.
To achieve the second object, there is provided a concentricity processing apparatus for processing the concentricity of a product or subject to be processed, comprising: a loading unit for loading the subject to be processed, photographing means for photographing the section of the subject to be processed loaded into the loading means, display means for displaying the section of the subject to be processed as photographed by the photographing means; a controller for obtaining a concentricity value using at least two inside diameter values calculated by the display means and at least two rotation angle values of the servo motor, and calculating a machined amount in units of Fuji each rotation angle with reference to the concentricity and the rotation angle corresponding thereto; a servo motor in which the loading means is installed for rotating the loading means by a rotation angle &thgr; received as an input from the controller; a processing tool for machining the subject to be processed as rotated by the servo motor; and an X-Y stage in which the processing tool is loaded for moving the processing tool in a horizontal direction according to the machined amount D calculated by the controller.
The photographing means is, preferably, a CCD camera. The machined amount with respect to the concentricity is, preferably, half of the concentricity.
To achieve the second object, there is provided a method for processing the concentricity of a product or subject to be processed using a concentricity processing system which comprises: a photographing unit for photographing the subject to be processed; a display unit for displaying the subject to be processed as photographed by the photographing means; a motor for rotating the subject to be processed; and a processing tool for machining the subject to be processed. The method comprises the steps of loading the product or subject to be processed, photographing the section of the loaded subject to be processed, displaying the section of the photographed subject to be processed, obtaining a concentricity value using the motor rotation angle of the subject to be processed and the section of the displayed subject to be processed, calculating the rotation angles and the machined amounts of at least two motors using a rotation angle corresponding to the concentricity value and the concentricity value, and machining the subject to be machined by using the processing tool according to the machined amount, and by rotating a motor according to the calculated rotation angle.
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Bushnell , Esq. Robert E.
Grant William
Hartman Jr. Ronald D
Samsung Electronics Co,. Ltd.
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