1. LATHE MACHINE
OPERATIONS
PRESENTED BY
SOURABH V BHAT RAINAK SHARMA
(1VA17EC101) (1VA17EC079)
RAHUL SARAN G
(1VA17EC078)
Sai Vidya Institute of Technology
Learn to Lead….
Rajankunte , Bangalore
2. OBJECTIVE
Principle of Lathe Machine
Types of Lathe Machine
Turning
Taper Turning
Facing
Knurling
Thread Cutting
Drilling
3. PRINCIPLE OF LATHE MACHINE
Workpiece held by chuck
Rotating workpiece
Tool fed against workpiece
5. TYPES OF LATHE MACHINE
• Primarily for single piece or short runs
• Manually operated
Engine Lathe
• Equipped with multisided tool post (turret) to which
several different cutting tools are mountedTurret lathe
• Six or eight different operations may be performed on
many parts at the same time
Single and multiple
spindle automatic lathes
• Hydraulically operated cross-slide controlled by stylus
bearing against round or flat templateTracer lathes
• Operated as standard lathe or programmable lathe to
automatically repeat machining operations
Conventional
programmable lathe
• Computer-controlled program controls cutting-tool
movements & sequence of operations automatically
Computerized numerically
controlled lathes
7. TAPER TURNING
Uniform increase or decrease in the diameter
Tool mounted on the compound rest
Circular base graduated in degrees
8.
9. FACING
Produces a flat surface at the end of the workpiece
Prevention of movement of carriage by locking it
to lathe bed
Usage of cross slide to feed the tool at right angles
(perpendicular) to the lathe axis
Reduces the length of the work piece
10.
11. DRILLING
Cuts a hole of circular cross-section in solid
materials
Drill bit is usually a rotary cutting tool, often
multi-point
Pressing of drill bit against the work-piece
Rotates at rates from hundreds to thousands
rpm
12.
13. KNURLING
Generation of serrated surfaces on the
workpieces
Low speed of about 60-80 rpm
A feed of about 0.38-0.76 mm/rev of
the spindle
14.
15. THREAD CUTTING
Generation of helical ridge on a
cylindrical or conical rod
Apt gear ratio between the spindle on
which the workpiece is mounted and the
lead screw
Longitudinal tool movement at apt linear
speed