This is a presentation on different types of lathe machine accessories which is a part of Manufacturing process I.

2. • Used for holding the work piece
in lathe.
• The entire load of the work
piece and thrust developed due
to metal cutting is taken by the
centers
• Made up of very hard metals to
resist deflection and wear .
• Included angle is generally
between 60 - 75°.
• Its different types are live and
dead center.

3. • Used for holding and
rotating a work piece in
lathe.
• Components of any regular
of irregular can be held.
• Attached to the spindle with
bolts with the back plate
screwed on spindle nose.
• Mainly two types : universal
or three jaw chuck and four
jaw chuck (independent) .

4. • They are used in
conjunction with the driving
plate.
• It may be straight tailed or
bent tailed.
• The work piece to be held is
inserted in the V shaped
hole.
• Work piece of larger
diameter can’t be held.

5. • Used for holding the chuck
in lathe.
• It is very heavy and has
strong ribs.
• Nuts and bolts are used for
clamping the chuck with it.
• Has thread in a hole in
centre so that it can be fit
into the spindle nose.

6. • Also known as driving plate.
• For attachment to the end of
head stock driving spindle,
the hole in center in
internally threaded.
• It also carries a hole for the
pin which engages with the
tail of the lathe carrier when
the work piece is held.

7. • It is a L shaped plate with two
faces machined at right angles
on has slots for clamping on
face plate.
• When work piece is such that
it is not possible to clamp it to
the chuck then angle plate is
used.

8. • It is a shaft made of high
carbon steel and mounted
between the centres.
• It is used for holding the pre
drilled work pieces for
outside machining.
• It is always rotated with the
help of a dog and it is never
placed in a chuck.
• Its various types are plain,
step, collar, screw, cone,
gang, expansion.

9. • It is used to support a long
slender job, which is turned
between centres.
• It prevents the bending of work
piece which is cause due to its
own weight and vibrations of
the cutting forces.
• It is generally used when length
to diameter ratio is around 1 :
10-12.
• Mainly of two types : steady
and follower.