Manufacturing Processes, Ch. 1-4

Design for Manufacture and Assembly (DMFA) Correct Answers Integrates product design process with: • Materials Selection • Manufacturing Methods and Selection • Assembly/Disassembly • Process Planning • Testing • Quality Assurance DFMA Correct Answers • Requires that designers acquire a fundamental understanding of the characteristics, capabilities, and limitations of materials, production methods, machinery, and equipment. • Must consider variability in performance, dimensional accuracy, surface finish, aesthetics, processing time, effect of processing methods on part quality, and cost. Key DFMA Principles Correct Answers • Designs should be as simple as possible to manufacture, assemble, disassemble, service, and recycle. • Materials should be chosen for their appropriate design and manufacturing characteristics as as well as for their service life. • Dimensional accuracy and surface finish specified should be as broad as permissible. • Because they can add significantly to cost, secondary and finishing operations should be avoided or minimized. More Key DFMA Principles Correct Answers • Minimize Part Count • Standardize Parts and Materials • Create Modular Assemblies