Page 15 - TDM - 1st Year - TP - Hindi

18. Mark with scriber and steel rule.
(01 hr)
19. Measuring practice with steel
rule, outside & inside callipers.
(06 hrs.)

20.Dot punching and letter and Vernier calliper – its parts,
number punching. (05 hrs.) principles, 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,
22. Drill grinding practice. (10hrs.)
types, uses, accuracy, 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 Dial test indicator-its parts, types,
of ±0.05mm. (10 hrs.) construction and
24.Marking for centre punching, u s e s . I n t e r c h a n g e a b i l i t y :
drilling, reaming, tapping, counter Necessityin Engineering. field,
boring, counter sinking. (02 hrs.) Limit Definition, types,terminology
of limits and fits-basic size,
25.Centre punching, drilling, actualsize, deviation, high and low
reaming, tapping, counter boring, limit, zero-line, tolerance zone,
counter sinking on drill plate. allowances. Different standard
(12hrs.)
systems of fits and limits.
26.Die pass on standard material Geometrical tolerance. British
(M8). (08 hrs.) standard system, BIS system.
27. Cutting tool filing and grinding on (10Hrs.)
standard material. (10 hrs.)

(xiii)