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Article
A study of improving overlay accuracy for a stepper in IC manufacture
In integrated circuit manufacture, owing to the limited optical system capability and the possibility of inaccurate mask installation in a stepper, image distortion of the mask pattern projected onto the wafer...
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Article
The selection system for sheet bending tooling
Sheet metal working is one of the earliest techniques to develop in manufacturing industry. Machine specifications such as pressure capacity and bending length have to be considered in the selection of bending...
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Article
An investigation of an expert system for shearing cut progressive die design
The purpose of this paper is to develop an expert system for shearing cut progressive die, with the aim of enhancing the design of shearing cut progressive dies. This study is different from previous research ...
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Article
An expert system for fixturing design for face milling using modular fixture
The research objective of this paper is to develop an expert system for a modular fixture. We provide a complete fixturing procedure analysis for workpieces with different shapes such as L, I, T, and U types. ...
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Article
The application of the fuzzy similar matrix in the design of a sheet-bending expert system
The main purpose of this study is to apply fuzzy sets theory to solving the problem of shape recognition in sheet-bending design, and to attempt to establish a prototype expert system for use in English and Ch...
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Article
The study of design data extraction from design drawing with application in measurement
This study begins with the design blueprint, and the input of the geometry tolerances and dimensions into the function chart established in the CAD system. The graphic data is then extracted by means of the ex...