SATHYABAMA - SMEX1019

DESIGN OF TRANSMISSION SYSTEMS - SMEX1019

UNIT I - DESIGN OF TRANSMISSION SYSTEMS FOR FLEXIBLE ELEMENTS

Selection and design of – Flat belts and pulleys- V belts and pulleys –Chain drives and sprockets

UNIT II - DESIGN OF SPUR GEARS AND PARALLEL AXIS HELICAL GEARS

Gear Terminology-Speed ratios – Selection and design of spur gear- material selection- service factor- module calculation for endurance strength- Force analysis -Tooth stresses (fillet bending stress and contact stress) - Parallel axis Helical Gears – Equivalent number of teeth-Forces. Estimating the size of the helical gears and stresses – Dynamic effects- Fatigue strength

UNIT III - DESIGN OF BEVEL AND WORM GEARS

Straight bevel gear: Tooth terminology- Design of pair of straight bevel gears – Tooth forces and stresses Worm Gear: Merits and demerits- Terminology. Thermal capacity, Design of the worm and gear – Forces and stresses, efficiency

UNIT IV - DESIGN OF GEAR BOXES

Geometric progression – Standard step ratio – Ray diagram, kinematics layout -Design of sliding mesh gear box -Constant mesh gear box. – Design of multi speed gear box.

UNIT V - DESIGN OF CLUTCHES AND BRAKES

Design of plate clutches – Axial clutches-Cone clutches-Internal expanding rim clutches –Design of brakes – Internal and external shoe brakes.