Page 20 - Fitter- 1st Year TT - Kannada

c h a m f e r i n g
, shoulder turn,
grooving, knurling,
boring, taper
turning, threading
(external ‘V’ only)]
CSC/N0110 95. Holding job in three jaw chuck. (2 hrs.) Lathe cutting tools- Nomenclature

96. Perform the facing, plain turn, step of single point & multipoint cutting
turn, parting, deburr, chamfer-corner, tools,
roundthe ends, and use form tools. Tool selection based on different
(08 hrs.) requirements and necessity of
97. Shoulder turn: square, filleted, correct grinding, solid and tipped,
beveled undercut shoulder, turning- throw away type tools, cutting
filleted under cut, square beveled. (08 speed and feed and comparison
hrs.) for H.S.S., carbide tools. Use of
coolants and lubricants. (03 hrs.)
98. Sharpening of -Single point Tools.
(1 hr.)

99. Cut grooves- square, round, ‘V’ Chucks and chucking the
groove. (08 hrs.) independent four-jaw chuck.
Reversible features of jaws, the
100. Knurl the job. (1 hr.)
back plate, Method of clearing the
101. Bore holes -spot face, pilot drill, thread of the chuck-mounting and
enlarge hole using boring tools. (9 dismounting, chucks, chucking
hrs.) true, face plate, drilling - method of
holding drills in the tail stock, Boring
tools and enlargement of holes.
(02 hrs.)

102. Turn taper (internal and external). General turning operations- parallel
(10 hrs.) or straight, turning. Stepped
103. Turn taper pins. (5 hrs.) turning, grooving, and shape of
tools for the above operations.
104.Turn standard tapers to suit with Appropriate method of holding
gauge. (5 hrs.) the tool on tool post or tool rest,
Knurling: - tools description, grade,
uses, speed and feed, coolant for
knurling, speed, feed calculation.
Taper - definition, use and method
of expressing tapers. Standard
tapers-taper, calculations Morse
taper. (03 hrs.)
105. Turn taper (internal and external). Screw thread definition - uses
(10 hrs.) and application. Square, worm,
106. Turn taper pins. (5 hrs.) buttress, acme ( nonstandard-
screw threads), Principle of
107. Turn standard tapers to suit with cutting screw thread in centre
gauge. (5 hrs.) lathe -principle of chasing the
screw thread - use of centre
gauge, setting tool for cutting
internal and external threads, use
of screw pitch gauge for checking
the screw thread. (03 hrs.)

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