It's a ppt on lathe machine operations

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

4. LATHE MACHINE

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

6. TURNING
STEP TURNING PLANE TURNING

7. TAPER TURNING
 Uniform increase or decrease in the diameter
 Tool mounted on the compound rest
 Circular base graduated in degrees

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

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

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

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

17. CONCLUSION

18. Any Questions ??