Question

What are the general principles of DFA? What are the steps to minimize the number of parts for an assembly?

Answer 1

Answer Explanation : The general principles for design for assembly (DFA) are,

• MINIMIZE NUMBER OF COMPONENT
• USE STANDARD COMMERCIALLY AVAILABLE COMPONENTS
• USE COMMON PARTS ACROSS PRODUCT LINES
• DESIGN FOR EASE OF PART FABRICATION
• DESIGN PARTS WITH TOLERANCE THAT ARE WITHIN PROCESS CAPABILITY
• MINIMIZE USE OF FLEXIBLE COMPONENT
• DESIGN FOR EASE OF ASSEMBLY
• USE MODULAR DESIGN
• REDUCE ADJUSTMENT REQUIRED

STEPS TO MINIMIZE THE NUMBER OF PARTS

• USE OF INCORPORATE HINGS
• USE OF INTEGRAL SPRINGS
• USE OF SNAP FITS
• USE OF GUIDES BEARINGS
• USE OF COVERS