Mechanical Engineering Notes

Mechanical Engineering Notes

Since 2019

Machine Design 2

 

Syllabus: 

DESIGN OF POWER TRANSMISSIN ELEMENTS (08 Hours)
Design o belt drives, selection of flat and V - belts, design of pulleys and flywheels. Design of gear drives – spur, helical, bevel and worm gear drives. Design of single and multistage speed reducers. Rating of g ears as per I.S. and AGMA standards.

DESIGN OF GEAR BOXES (08 Hours)
Types of gear boxes, design of machine tool gear boxes using preferred numbers.

Design of clutches and brakes, types of clutches, design of single & multiple plate clutches, c one Clutch, and centrifugal clutch. Design of block brake, pivoted shoe brake, long shoe brake, internal shoe brake. Simple and differential band brake. (08 Hours)

DESIGN OF BEARINGS (06 Hours)

Design of hydrodynamic journal bearings. Cla ssification, material selection, Sommerfeld number, and use of charts for the estimation of minimum film thickness, temperature rise, flow quantity etc. design of pressure fed and self contained bearings. Rolling contact bearings. Classification and selecti on, factors affecting bearing life, bearing assembly, and lubrication.

LOAD LIFTING DEVICES (06 Hours)
Selection of steel wire rope for hoists and cranes, crane hooks, design of hook block, sheaves and rope
winding drums.

INTRODUCTION TO PRESSURE VESSELS (06 Hours)
Thin and thick cylinder, classification of pressure vessels, loads, stresses and types of failures.

STATISTICAL CONSIDERATIONS IN MACHINE DESIGN (03 Hours)
Statistical analysis of tolerances, Reliability, statistical facto r of safety, MTBF, Reliability of systems in series, and parallel.

(Total Lecture Hours: 45 +Tutorial Hrs: 15)

PRACTICALS

1. Design and drawing of speed reducer (08 Hours)
2. Design and drawing of clutch of any of the following (04 Hours)
    a. Plate clutch
    b. Centrifugal clutch
    c. Multiplate clutch
3. Design and drawing of the any of the brake from following (04 Hours)
    a. Ext. Expanding brake
    b. Int. Expanding brake
    c. Differential band brake
4. Design of hook block & drawing (04 Hours)
5. Selection and mounting of Rolling element b earing (04 Hours)
6. Design of Gear Box with its Kinematic arrangement (04 Hours)
7. Design of Bevel Gear (02 Hours)

BOOKS RECOMMENDED

1. Bhandari V. B., “Design of Machine Elements”, Tata McGraw Hill, 1994.
2. Shigley Joseph, “Mechanical Engineering Design”, McGraw Hill, 1989.
3. Patel R.C., ”Machine Design”, C. Jamnadas & Co., 1992.
4. Karwa Rajendra, “A Text Book of Machine Design”, Laxmi Publication, 2006.
5. P.S. G. Design Databook (PSG College of Engg. & Tech.), DPV Printers, Coimbatore, 2000.

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