Manufacturing is a series of interrelated activities and operators involving design, material selection, planning, production, quality assurance, management, and marketing of discrete consumer and durable goods.
A Manufacturing System is an organization that comprises several subsets responsible of performing manufacturing activities. Its objective is to interface with outside production functions to optimize the total productivity performance of the system.
Composed of 2 main processes: The design process and the manufacturing process.
Starts from customer’s demands and ends with a complete description of the product (Model)
Starts from the design specifications and ends with shipping of the actual product.
Two large types:
Synthesis: Identification of the design need, formulation of the design specifications, feasibility study with collecting relevant design information, and design conceptualization. Result of the synthesis subprocess: A conceptual design – a sketch or a layout drawing that shows the relationships among the various product components
Analysis: Analysis and optimization of the design.
Is a technology concerned with the use of computer systems to assist in creation, modification, analysis and optimization of a design
Basic role of CAD:
Define the geometry of design
Technologies: Computer-aided drafting and geometric modeling
The technology concerned with the use of computer systems to plan, manage, and control manufacturing operations through either direct or indirect computer interface with the plan’s production resources
What is CAM?
The effective utilization of computers in manufacturing.
Applications of computers:
Direct application – device monitoring and control, NC, PLC, manufacturing cell.
Indirect applications – manufacturing support – planning, MRP, process planning, scheduling, inventory, shop floor control.
The Trend of Manufacturing Industry
1. Rapid changing market place
2. Fast development of new technologies
3. Fierce competition
4. A “use brain” generation, not willing to learn the trade which requires hand skill.
5. Lower cost
6. Higher quality
7. Lower product development cycle
Benefits of CAM:
* 90% Inventory reduction.
* 50% more efficient use of factory & warehouse space.
* 75% reduction in machine setup time – item setup (re-measurement, repositioning, and replacement of cutting tools,..)
* Does not change product specific set-up.
* 25% reduction in direct and indirect labor.
* 90% reduction in lead time.
Computer-aided Engineering is the use of computer systems to analyze CAD geometry, allowing the designer to simulate and study how the product will behave so that the design can be refined and optimized.