Subject Details
Dept     : MECH
Sem      : 6
Regul    : R 2019
Faculty : Mr. Gowtham M
phone  : NIL
E-mail  : gowtham.m.mech@snsct.org
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Syllabus

UNIT
1
IMPORTANCE OF DFMA

Phases of design – General requirements for material and process selection, effect of material properties and manufacturing process on design – DFA Guidelines – Design for Additive Manufacturing – Design for Environment - Computer aided DFMA.

UNIT
2
GD&T AND FACTORS INFLUENCING DESIGN

Introduction to GD&T – Limits, fits &tolerances – geometric tolerances, feature tolerances, cost aspects – MMC & LMC - cumulative tolerance – interchangeability and selective assembly – shims – runout and axial play. Influence of Material, Manufacturing process on design - Possible solutions - Materials choice – Welding and forging guidelines.

UNIT
3
DESIGN FOR MACHINING OPERATIONS

Design guidelines for machining operations – turning - machining - drilling – grinding operations- keyways - Doweling procedures, counter sunk screws - Design for machinability - Design for economy - Design for clampability – Design for accessibility

UNIT
4
DESIGN FOR CASTINGS

Design guidelines for sand casting and die casting - Minimizing core requirements, machined holes, redesign of cast members to obviate cores. Identification of uneconomical design - Modifying the design – group technology - Computer Applications for DFMA

UNIT
5
DESIGN FOR ASSEMBLY

General design guidelines for manual and automated assembly, part handling issues, guidelines for fastening, effect of part symmetry on handling time, effect of part thickness, size, weight on handling time- part insertion considerations- Case studies on DFMA

Reference Book:

1. Boothroyd, G, Heartz and Nike, “Product Design for Manufacture”, Marcel Dekker,2014. 2. James D. Meadows, “Geometric Tolerances in Manufacturing”, 1995 3. Whitney, Daniel E., “Mechanical Assemblies - Their Design, Manufacture, and Role in Product Development “Oxford University Press, 2014. 4. Danny Samson, “Manufacturing and Operations Strategy”, Prentice Hall, 2013 5. Ashok Kumar, “Simplified GD&T: Based on ASME-Y 14.5-2009”, Kindle edition, 2018

Text Book:

1. Boothroyd,G, Marcel Dekker. “Design for Assembly Automation and Product Design,New York, 2015. 2. Bralla, “Design for Manufacture handbook”, McGraw hill, 2014

 

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