In this presentation we cover the introduction of lathe, work holding devices and operation of lathe machine. Comprehensively explained!

1. 2014-ME-410
2014-ME-412
2014-ME-413
2014-ME-414
December 05, 2016
A detailed introduction to Lathe Machine
Mother of Machines!

2.  Work Holding Devices
 Calculation of Area, Volume
and Power
 Working Principle
 Lathe Machine Tools
Overview

3.  Machining is commercially
important for various
reasons:
 Variety of work material
 Variety of geometric features
 Dimensional accuracy
 Good surface finishes
 Machining is a
manufacturing process in
which sharp cutting tool is
used to cut away material to
leave desired part shape.
Working Principle of Machines

4.  Using machining, we can
create any geometric shape
such as flat planes, round
holes and cylinders.
 Irregular geometries such as
screw threads and T- slots
can also be created.
Variety of Geometric
Features
 Machining can be applied to
wide variety of work
materials. Even plastics and
composites can be cut using
machining operations
Variety of Work Material
Working Principle of Machines

5.  Machining is capable of
giving very smooth surface
finishes.
 Roughness value less than
0.4 can be achieved using
machining.
Good Surface Finishes
 Machining produce
dimensions to very close
tolerances.
 Some machining process can
even achieve tolerances of
0.025mm.
Dimensional Accuracy
Working Principle of Machines

6.  Lathes are used in
woodturning, metalworking,
metal spinning etc. Most
suitably metalworking lathe
can also be used to produce
solid of revolution, plane
surfaces and screw threads.
Major Uses
 Known as mother of
machines, Lathe performs
various operations such as
cutting, drilling, facing,
turning etc. with tools that
are applied to work piece to
create an object having
symmetry about axis of
rotation
Introduction
Lathe Machine

7.  Turning Tool
 Facing Tool
 Contouring Tool
 Chamfering Tool
 Parting Tool
 Threading Tool
Lathe Machine Tools

8.  Single point cutting tool
removes material from a
rotating workpiece to thus
decreasing the length
Facing Tool
 Single point cutting tool
removes material from a
rotating workpiece to thus
decreasing the diameter
Turning Tool
Lathe Machine Tools

9.  Cutting edge cuts an angle
on the corner of the cylinder,
forming a "chamfer"
Chamfering Tool
 Tool follows a contour that is
other than straight, thus
creating a contoured shape
Contour Tool
Lathe Machine Tools

10.  Pointed form tool is fed
parallel to axis of rotation at
a large feed rate, thus
creating threads
Threading Tool
 Tool is fed radially into
rotating work at some
location to cut off end of
part
Parting Tool
Lathe Machine Tools

11.  Work holding refers to any device that is used to a secure a
work piece against the forces of machining. The most basic work
holding device is a simple clamp, but work holding can also
involve complex fixtures that are custom-built for particular
parts.
Other work holding devices are:
 Chuck
 Collet
 Face plate
Work Holding Devices

12. Lathe Chuck:
 A chuck is a specialized type of clamp. It is used to hold an
object with radial symmetry, especially a cylinder.
 On a lathe the chuck is mounted on the spindle which rotates
within the headstock.
Work Holding Devices

13. Collet:
 A collet is a subtype of chuck that forms a collar around an
object to be held and exerts a strong clamping force on the
object when it is tightened, usually by means of a tapered outer
collar. It may be used to hold a work piece or a tool.
Work Holding Devices

14. Face Plate:
 A lathe faceplate is a basic workholding accessory for a wood
or metal turning lathe. It is a circular metal (usually cast iron)
plate which fixes to the end of the lathe spindle. The workpiece
is then clamped to the faceplate, typically using t-nuts in slots in
the faceplate.
Work Holding Device

15. Usman Khalil
Engineer, Wikipedia Expert, Blogger, Translator!
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