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By: RONE.
Department of Mechanical engineering, EIT, Faridabad, Haryana
Fixtures play a crucial role in ensuring dimensional accuracy, productivity, and repeatability in modern manufacturing systems. With the increasing adoption of flexible and computer-integrated manufacturing, there is a growing need for systematic and automated fixture design methodologies. This work presents a computer-aided fixture design and assembly approach that integrates CAD-based modeling, modular fixturing concepts, and virtual assembly techniques. The proposed methodology covers the complete fixture development cycle, including workpiece analysis, selection of locating, supporting, and clamping elements, fixture unit design, assembly planning, and interference checking. Standardized fixture elements are modeled and assembled using predefined mating relationships and assembly constraints within a CAD environment. Interference detection and design verification are carried out to ensure feasibility and correctness of the fixture assembly before physical realization. The approach also supports the generation of three-dimensional fixture layouts and bill of materials, enabling efficient documentation and design validation. Case studies on rectilinear and cylindrical workpieces demonstrate the effectiveness of the proposed system in reducing design time, eliminating trial-and-error practices, and improving fixture reliability. The computer-aided fixture design and assembly framework provides a structured, flexible, and cost-effective solution suitable for automated and flexible manufacturing environments.
Citation:
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