Page 19 - Fitter - 1st Year - TP- Gujarati

161. Making an adjustable spanner: - Power transmission elements. The
Marking out as per Blueprint, drilling, object of belts, their sizes and
cutting, straight and curve filing, specifications, materials of which
threading, cutting slot and cutting the belts are made, selection of the
internal threads with taps. (16 hrs.) type of belts with the consideration
of weather, load and tension
methods of joining leather belts. (04
hrs.)
162. Dismantling and mounting of pulleys. Vee belts and their advantages and
(12 hrs.) disadvantages, use of commercial
belts, dressing and resin creep and
163. Making & replacing damaged keys.
(12 hrs.) slipping, calculation.
Power transmissions- coupling
164. Dismounting, repairing damaged types-flange coupling,-Hooks
gears and mounting and check for coupling-universal coupling and
workability. (16 hrs.) their different uses.
165. Repair & replacement of belts and Pulleys-types-solid, split and ‘V’
check for workability. (12 hrs.) belt pulleys, standard calculation for
determining size crowning of faces-
loose and fast pulleys-jockey
pulley. Types of drives-open and
cross belt drives. The geometrical
explanation of the belt drivers at an
angle.
Clutch: Type, positive clutch
(straight tooth type, angular tooth
type).
Chains, wire ropes and clutches for
power transmission. Their types
and brief description. (15 hrs.)

166. Making of template/gauge to check Power transmission –by gears,
involute profile. (17 hrs.) most common form spur gear, set
names of some essential parts of
the set-The pitch circles, Diametral
pitch, velocity ratio of a gear set.
(05 hrs.)

167. Repair of broken gear tooth by stud Helical gear, herring bone gears,
and repair broker gear teeth by bevel gearing, spiral bevel gearing,
dovetail. (17 hrs.) hypoid gearing, pinion and rack,
worm gearing, velocity ratio of worm
gearing. Repair of gear teeth by
building up and dovetail method. (05
hrs.)

168. Make hexagonal slide fitting. (16 Method or fixing geared wheels for
hrs.) various purpose drives. General
cause of the wear and tear of the
169.Prepare different types of
documentation as per industrial need toothed wheels and their remedies,
by different methods of recording method of fitting spiral gears,
information. (04 hrs.) helical gears, bevel gears, worm
and worm wheels in relation to
required drive. Care and
maintenance of gears. (05 hrs.)

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