Structural Optimum Design and Thermal Compensation Design of an AOI Machine Structure
Date Issued
2010
Date
2010
Author(s)
Ma, Chia-Hung
Abstract
This paper studies the optimum design and thermal compensation design of a high precision automatic optical inspection (AOI) machine structure. First, the structure of AOI machine is introduced. A parametric program for AOI machine is developed to generate solid models of the AOI machine automatically. Then, structural characteristics of the AOI machine are analyzed by the finite element analysis (FEA) and obtained by experiments. Structural responses, such as deformation of the base frame and inspection lens tip, of the original structure are analyzed. An integrated program is also developed by combining solid model generation, FEA simulation, response approximation and numerical optimization searches. Using this integrated program, optimum design of the machine base and moving parts of AOI machine are conducted. The results of optimum design improve the structural characteristics of the AOI machine structure. After the temperature distribution experiment, the thermal deformation of the AOI machine can be analyzed by FEA. Finally, a thermal compensation design is proposed to compensate this thermal error.
Subjects
Automatic optical inspection
structural optimum design
finite element analysis
thermal compensation design
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