🔹 Conventional Design Process

1. Recognizing the need of a product
2. Problem definition and specification
3. Synthesis & Geometric Modeling
4. Analysis & Optimization (Engineering Analysis)
5. Design Review & Evaluation
6. Presentation (Automated Drafting)

🔹 Product Life Cycle

Stages include: Product concept, Design engineering, Drafting, Customers & markets, Equipment/tooling, Process planning, Quality control, Production, and Scheduling.

🔹 Revised Product Life Cycle with CAD/CAM

CAD/CAM integrates digital tools into every stage:

• Computer-aided design & drafting
• Computer-aided process planning
• Computer-aided quality control
• Computer-controlled robots & machines
• Computerized scheduling & shop floor control

🔹 Computer-Aided Design (CAD)

CAD uses computer systems to aid in creation, modification, analysis, and optimization of design, replacing manual drafting with digital workflows.

Key Benefits:

• Increased accuracy
• Efficiency through automation
• Visualization with renders & animations
• Collaboration across global teams

🔹 CAD Hardware Components

• Graphics Workstations: Multi-core CPUs (8+ cores)
• Memory: 16GB minimum (32GB+ for 3D)
• GPU: 8GB+ VRAM for rendering
• Display: 4K monitors
• Input Devices: Precision mouse, trackpads, digitizers

🔹 CAD Software Architecture

• System Software: OS & drivers
• Application Software: CAD programs (AutoCAD, SolidWorks)
• Modern Layer (2026): Cloud collaboration & version control

🔹 CAD Software Examples

AutoCAD (Autodesk)

• Market leader in 2D drafting
• AI-powered Smart Blocks
• Specialized toolsets (Civil 3D, Architecture)
• Web/Mobile access

SolidWorks (Dassault Systèmes)

• Parametric modeling
• Assembly & simulation (stress/motion analysis)
• Industry standard for mechanical engineers

Autodesk Fusion

• Cloud-based CAD/CAM integration
• Generative design with AI
• Unified workflow for design, CAE, CAM
• Real-time collaboration

🔹 Key Takeaways

CAD revolutionizes design across architecture, engineering, and manufacturing.

Emerging Trends:

• AI & Automation
• Cloud & Connectivity
• VR/AR Integration

🔹 Benefits of CAD

• Improved accuracy & productivity
• Reduced personnel requirements
• Easy customer modifications
• Better functional analysis
• Minimized transcription errors
• Improved tool design productivity
• Compatibility with manufacturing techniques
• Assistance in inspection of complex parts
• Enhanced communication among teams