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UNIT I DESIGN OF FLEXIBLE ELEMENTS

1.1 Design of Flat belts and pulleys

1.2 Selection of V belts and pulleys

1.3 Selection of hoisting wire ropes and pulleys

1.4 Design of Transmission chains and Sprockets

UNIT II SPUR GEARS AND PARALLEL AXIS HELICAL GEARS

2.1 Speed ratios and number of teeth

2.2 Force analysis-Tooth stresses-Dynamic effects-Fatigue strength

2.3 Factor of safety

2.4 Gear materials

2.5 Design of straight tooth spur & helical gears based on strength and wear considerations

2.6 Pressure angle in the normal and transverse plane-Equivalent number of teeth-Forces for helical gears.

UNIT III BEVEL, WORM AND CROSS HELICAL GEARS

3.1 Straight bevel gear-Tooth terminology

3.2 Tooth forces and stresses-Equivalent number of teeth- Estimating the dimensions of pair of straight bevel gears

3.3 Worm Gear: Merits and demerits

3.4 Thermal capacity, materials-forces and stresses, efficiency-Estimating the size of the worm gear pair

3.5 Cross helical gear - Helix angles-Estimating the size of the pair of cross helical gears.

UNIT IV GEAR BOXES

4.1 Geometric progression-Standard step ratio-Ray diagram-Kinematics layout

4.2 Design of sliding mesh gear box

4.3 Design of multi speed gear box for machine tool applications

4.4 Constant mesh gear box

4.5 Speed reducer unit-Variable speed gear box

4.6 Fluid Couplings

4.7 Torque Converters for automotive applications.

UNIT V CAMS, CLUTCHES AND BRAKES

5.1 Cam Design

5.2 Pressure angle and under cutting base circle determination-Forces and surface stresses

5.3 Design of plate clutches-Axial clutches-Cone clutches

5.4 Internal expanding rim clutches

5.5 Electromagnetic clutches

5.6 Band and Block brakes- External shoe brakes-Internal expanding shoe brake.