JNTUA B.Tech. R20 Regulations

########## JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY ANANTAPUR B.Tech (ME) - IV-I Sem L T P C 3 0 0 3 (20A03701b) DESIGN FOR MANUFACTURING (Professional Elective-III) Course Objectives:

- • Explain the product development cycle and manufacturing issues to be considered in design.
- • Familiarize manufacturing consideration in cast, forged, and weld components.
- • Describe the manufacture of sheet metal components.
- • Impart knowledge plastics as substitution to metallic parts.

########## Course Outcomes:

After successful completion of the course, the student will be able to

- • Design mechanical components with economical consideration
- • Select materials and machining processes
- • Identify the necessity for redesigning components out of manufacturing considerations
- • Consider the manufacturing considerations while designing cast, forged weld and sheet metal components
- • Design plastic parts with manufacturing considerations

UNIT I Introduction Design philosophy-steps in design process-general design rules for manufacturability- Introduction: Design philosophy-steps in design process-general design rules for manufacturability- Introduction: basic principles of designing for economical production-creativity in design. Selection of materials for design-developments in material technology-criteria for material Materials: selection-material selection interrelationship with process selection-process selection charts.

########## UNIT II Machining processes

Overview of various machining processes-general design rules for machining-dimensional tolerance and surface roughness-Design for machining - ease - redesigning of components for machining ease with suitable examples. General design recommendations for machined parts.

UNIT III Metal Casting and Joining Appraisal of various casting processes, selection of casting process,-general design Metal casting: Appraisal of various casting processes, selection of casting process,-general design Metal casting: considerations for casting-casting tolerance-use of solidification, simulation in casting design-product design rules for sand casting. Appraisal of various welding processes, factors in design of weldments - general Metal joining: joining: design guidelines-pre and post treatment of welds-effects of thermal stresses in weld joints-design of brazed joints.

UNIT IV Forging, Extrusion &Sheet metal work Design factors for forging - closed die forging design - parting lines of dies - drop forging Forging: Design factors for forging - closed die forging design - parting lines of dies - drop forging Forging: die design - general design recommendations. Design guide lines extruded sections-design principles for punching, Extrusion &Sheet metal work: &Sheet metal work: blanking, bending, deep drawing-Keeler Goodman forging line diagram - component design for blanking.

########## UNIT V Plastics

Visco elastic and creep behavior in plastics-design guidelines for plastic components-design considerations for injection moulding - design guidelines for machining and joining of plastics.

########## Textbooks:

- 1. George E Dieter and Linda Schmidt, Engineering Design, 4/e, McGraw Hill, 2015.
- 2. A.K.Chitale and R.C.Gupta, Product Design and Manufacturing, 5/e, PHI Learning 2011.
- 3. David MAnderson, Design for Manufacturability, CRC Press, 2013.

########## Reference Books:

- 1. James GBralla, Design For Manufacturability Handbook, 2/e, McGraw Hill, 2004.
- 2. Dr.P.C.Sharma, Production Technology, S.Chand& Company, 2009.
- 3. G. Boothroyd, Product Design for Manufacture &Assembly, CRC Press, 3/e, 2010.