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DESIGN FOR MANUFACTURING AND ASSEMBLY

LECTURE NOTES. ON. DESIGN FOR MANUFACTURING AND ASSEMBLY . COURSE CODE A70339. IV I SEM JNTUH. Prepared By Mr. A. Venu Prasad Assistant Professor MECHANICAL ENGINEERING. INSTITUTE OF AERONAUTICAL ENGINEERING. (AUTON0 MOUS). DUNDIGAL, HYDERABAD - 500 043. 1. UNIT-I. INTRODUCTION. What is DFMA ? The concept of DFM ( DESIGN for Manufacture) is not new, it dates back as early as 1788 when LeBlanc, a Frenchman, devised the concept of inter-changeable parts in the manufacture of muskets which previously were individually handmade. DFM is the practice of designing products keeping MANUFACTURING in mind. DESIGN for manufacture means the DESIGN for ease of manufacture for the collection of parts that will form the product after ASSEMBLY .

corresponding manufacturing process [2] Process-Mass bar-chart: Figure 1.10 shows the typical mass-range of components that each process can make. Large components can be built up by joining smaller ones. For this reason the ranges associated with joining are shown in the lower part of Figure 1.10. It can be noted IIT BOMBAY that sand casting

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