Page 14 - TDM - 1st Year - TT - Hindi

20.Dot punching and letter and Vernier calliper – its parts, principles,
number punching. (05 hrs.) reading, uses and care.
Outside micrometer – its parts, principles,
reading, uses and care, vernier height gauge.
Marking tools – scriber.Marking out –
Coordinates system, Rectangular – Polar
–Rules for marking.
Bevel protractor, combination set- their
components, uses and cares.
Pedestal grinder, star wheel dresser, safety
precautions, care and maintenance. (12
Hrs.)

21.Grinding, centre punch, dot Marking media, special application.
punch, flat chisel and scriber. Surface plate and auxiliary marking
(10hrs.) equipment, ‘V’ block, angle plates,parallel
block, description, types, uses, accuracy,
22. Drill grinding practice. (10hrs.)
care and maintenance.Drill, Tap, Die-types
& application. Determination of tap drill size.
Reamer- material, types (Hand and
machine reamer), parts and their uses,
determining hole size for reaming, Reaming
procedure. Drilling machines-types and
their application, construction of Pillar &
Radial drilling machine.
Countersunk, counter bore and spotfacing
tools and nomenclature.Cutting Speed,
feed, depth of cut and Drilling time
calculations. (05Hrs.)
23.Drill Plate filing to an accuracy of Dial test indicator-its parts, types,
±0.05mm. (10 hrs.) construction and uses.Interchangeability:
24.Marking for centre punching, Necessityin Engineering. field,
drilling, reaming, tapping, counter LimitˆDefinition, types,terminology of limits
boring, counter sinking. (02 hrs.) and fits-basic size, actualsize, deviation,
high and low limit, zero-line, tolerance zone,
25.Centre punching, drilling, reaming, allowances. Different standard systems of
tapping, counter boring, counter fits and limits. Geometrical tolerance.
sinking on drill plate. (12hrs.) British standard system, BIS system.
26.Die pass on standard material (10Hrs.)
(M8). (08 hrs.)
27. Cutting tool filing and grinding on
standard material. (10 hrs.)

Professional Marking different of 28.Make Male & Female ‘Open’ fitting Introduction about metals, difference
Skill 110 components for with accuracy ±0.05 mm. (25 hrs.) between Metal and Non-Metal, properties
Hrs.; assembling as per of metal, Classification of metals and its
required tolerance applications, pig – iron, cast iron, wrought
Professional iron, steel-plain carbon steel (Low carbon
Knowledge observing principle steel, medium and high carbon steels, high
20 Hrs. of interchange
ability and check for speed steel, stainless steel, carbides, etc.)
functionality. (04 Hrs.)
[Different Fit – Open,
Angular, & Square 29.Make male & female for square Heat treatment of metals, process- such
Fit; fit with accuracy ± 0.05 mm. as annealing, nit riding, hardening,
Required tolerance: (30hrs.) tempering, case hardening,
±0.05 mm, angular carburizing,cyaniding, flame hardening,
tolerance: 1 Induction hardening, purposes and its
degree.] effects on the properties of steel. (08 Hrs.)
NOS:CSC/N0309

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