The document presents information about lathe machine. It discusses the principal parts of a lathe including the bed, headstock, tailstock, carriage and feed mechanism. It describes the construction and various operations of a lathe such as turning, facing, boring, drilling, reaming and threading. The document is intended as part of a presentation on lathe machines.

1. ANAND KUMAR
Roll No.- ME /13/ 710
Topic of presentation:- Lathe Machine

2. Outline
 Introduction
 Construction of a lathe
 Principal parts a lathe
 Lathe operations
 References
May 23, 2017Outline | CONFIDENTI4L 2014

3. Introduction
May 23, 2017Introduction | CONFIDENTIAL 2014
 A Lathe is one of the most versatile and widely
used machine tool. So it is also known as a
mother machine tool.

4. Construction of a Lathe
May 23, 2017Construction of a lathe | CONFIDENTIAL 2014

5. Principal parts of a lathe
The principal parts of a lathe are:-
1. Bed
2. Headstock
3. Tailstock
4. Carriage
5. Feed mechanism
May 23, 2017Principal of a lathe | CONFIDENTIAL 2014

6. Lathe Bed
 All the parts of the lathe
such as headstock,
tailstock, carriage etc.,
are mounted on the bed.
 The bed should have
sufficient weight and be of
proper material so that
the vibrations generated
during operations are
damped out.
May 23, 2017Lathe bed | CONFIDENTIAL 2014

7. Headstock
 It is located at the left
hand side of the bed.
 It supports the spindle
and contains a
gearbox by which the
spindle and hence the
workpiece may be
rotated at various
speeds.
May 23, 2017Headstock | CONFIDENTIAL 2014

8. Tailstock
 It is situated at the right
hand end of the bed. It
can be moved towards
or away from the
operator.
 Tailstock can be locked
in any position along the
bed of the lathe by
tightening the clamp
lever or nut.
May 23, 2017Tailstock | CONFIDENTIAL 2014

9. Carriage
 The carriage controls
and supports the cutting
tool. By the help of this,
cutting tool moves away
or towards the head
stock. It has five major
parts:-
a) Saddle
b) Cross slide
c) Compound slide
d) Tool post
e) Apron
May 23, 2017Carriage | CONFIDENTIAL 2014

10. Parts of carriage (cont.)
a) Saddle
 It is an H-sapped
casting mounted on the
top of the lathe so
slides along the ways
between headstock and
tailstock.
 It carries the Cross
slide and compound
slide with suitable tool
post.
May 23, 2017Parts of carriage (cont.) | CONFIDENTIAL 2014

11. Parts of carriage (cont.)
b) Cross slide
 It is mounted on the saddle. It provides the
cross movement (towards or away from the
operator) to the cutting tool.
 The cross slide can be moved by its hand
wheel.
May 23, 2017Parts of carriage (cont.) | CONFIDENTIAL 2014

12. Parts of carriage (cont.)
c) Compound slide
 It is mounted on the
cross slide.
 It supports the tool post.
 The hand-feed is used
for taper turning
operations.
May 23, 2017Parts of carriage (cont.) | CONFIDENTIAL 2014

13. Parts of carriage (cont.)
d) Tool post
 It is mounted above the
compound slide.
 It clamps the cutting
tool or cutting tool
holder in a desired
position.
May 23, 2017Parts of carriage (cont.) | CONFIDENTIAL 2014

14. Parts of carriage (cont.)
e) Apron
 It is fastened to the
saddle and contains the
feeding mechanism.
 The apron hand wheel
can be turned by hand
to move the carriage
along the bed of the
lathe.
May 23, 2017Parts of carriage (cont.) | CONFIDENTIAL 2014

15. Feed mechanism
 The tool movement relative to the
work is known as feed. There are
three types of feed:-
 Longitudinal feed :- When
tool moves away or towards
the head stock parallel to the
axis of the work.
 Cross feed:- When the tool
moves away from the or
towards from the operator
perpendicular to work.
 Angular feed:- By swivelling
the compound rest the tool
is made to move at any
angle to the work.
May 23, 2017Feed mechanism | CONFIDENTIAL 2014

16. Lathe operations
 Turning
 To remove material from outside diameter of
a work piece to obtain a finished surface.
May 23, 2017Lathe operations | CONFIDENTIAL 2014

17. Lathe operations
 Facing
 To produce a flat surface at the end of the
work piece.
May 23, 2017Lathe operations | CONFIDENTIAL 2014

18. Lathe operations
 Boring
 To enlarge a hole or cylindrical cavity in the
job.
 The hole may have been made by drilling.
May 23, 2017Lathe operations | CONFIDENTIAL 2014

19. Lathe operations
 Drilling
 To produce a hole in the work piece.
May 23, 2017Lathe operations | CONFIDENTIAL 2014

20. Lathe operations
 Drilling
 To produce a hole in the work piece.
May 23, 2017Lathe operations | CONFIDENTIAL 2014

21. Lathe operations
 Reaming
 To finishing the drilled hole.
May 23, 2017Lathe operations | CONFIDENTIAL 2014

22. Lathe operations
 Threading
 To produce external or internal threads on the
work piece.
May 23, 2017Lathe operations | CONFIDENTIAL 2014

23. Lathe operations
 Knurling
 To produce a regularly shaped roughness on
the work piece.
May 23, 2017Lathe operations | CONFIDENTIAL 2014

24. References
 http://en.wikipedia.org/wiki/Lathe
 www.lathe-machine.in/lathe-machine-pics.html
 Manufacturing process by O.P. khanna.
May 23, 2017References | CONFIDENTIAL 2014

25. CORE JAVA
THANK YOU