A lathe machine is used to shape materials like metal, wood, glass, and pottery by rotating the workpiece about an axis. It holds the workpiece firmly between centers or in a chuck while a cutting tool is fed into the rotating workpiece. The key components of a lathe include the bed, headstock, gear box, carriage, and tailstock. The headstock houses the spindle that rotates the workpiece while the gear box contains different sized gears to control the spindle speed.

1. POWERPOINT PRESENTATION
ON
LATHE MACHINE
PRESENTED BY:
DCRUST, MURTHAL

2. INTRODUCTION
• A lathe is a machine tool which rotates the workpiece on its axis to
perform various operations such as cutting, sanding, knurling, drilling, or
deformation, facing, turning, with tools that are applied to the workpiece
to create an object which has symmetry about an axis of rotation. Lathes
are used in woodturning, metalworking, metal spinning, Thermal
spraying/ parts reclamation, and glass-working. Lathes can be used to
shape pottery, the best-known design being the potter's wheel.

3. LATHE MACHINE

4. WORKING PRINCIPLE
• The lathe is a machine tool which holds the workpiece between two rigid
and strong supports called centers or in a chuck or face plate which
revolves. The cutting tool is rigidly held and supported in a tool post
which is fed against the revolving work. The normal cutting operations are
performed with the cutting tool fed either parallel or at right angles to the
axis of the work.
• The cutting tool may also be fed at an angle relative to the axis of work
for machining tapers and angles.

5. COMPONENTS OF LATHE MACHINE
• Bed
• Legs
• Headstock
• Gear Box
• Carriage
• Tail Stock

6. BED
• The bed is a heavy, rugged
casting in which are mounted
the working parts of the lathe.
It carries the headstock and tail
stock for supporting the
workpiece and provides a base
for the movement of carriage
assembly which carries the
tool.

7. HEADSTOCK
• The headstock is clamped on the
left hand side of the bed and it
serves as housing for the driving
pulleys, back gears, headstock
spindle, live centre and the feed
reverse gear. The headstock
spindle is a hollow cylindrical
shaft that provides a drive from
the motor to work holding
devices.

8. LEGS
• The legs carry the entire load
of machine and are firmly
secured to floor by
foundation bolts.

9. GEAR BOX
• The quick-change gear-box is
placed below the headstock and
contains a number of different
sized gears

10. MACHINING PROPERTIES
• FEED: The distance by which the tool advanced between two consecutive
cuts.
• Depth Of cut : The advancement of the tool into workpiece in transverse
direction.
• Cutting Speed: The speed at which the spindle is rotating and machining
is being done.