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The use of computer systems to assist in the creation, modification, analysis, or optimization of a design. CAD software allows product designers and engineers to create precise 2D and 3D models, replacing manual drafting. This technology dramatically increases productivity, improves the quality of design, and facilitates better 沟通 through detailed visualizations and simulations.
Computer-Aided Design (CAD) revolutionized the field of product design by digitizing the entire drafting and modeling process. Before CAD, engineers and designers relied on manual drafting with tools like pencils, rulers, and compasses, a time-consuming and error-prone process. The breakthrough came with systems like Ivan Sutherland’s Sketchpad in 1963, which demonstrated the potential of interactive computer graphics. Modern CAD software provides a vast toolkit for designers. They can create complex 3D solid and surface models with parametric features, meaning the model’s geometry can be updated automatically if a dimension is changed. This is crucial for 迭代设计. Beyond simple modeling, CAD is often integrated into broader systems. Computer-Aided Engineering (CAE) uses CAD models to run simulations, such as 有限元 analysis (FEA) to test structural strength or computational fluid dynamics (CFD) to analyze airflow, without building a physical prototype. Computer-Aided Manufacturing (CAM) uses the same CAD data to generate instructions for manufacturing machinery like CNC mills or 3D printers. This seamless digital thread from design to analysis to manufacturing is a cornerstone of modern product development, enabling rapid prototyping and mass customization.
计算机辅助设计（CAD）
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