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By: Hafiz Muhammad Rizwan
PPE Suitable Personal Protective Equipment
must be used before using a tool,
Machines , check its safety instruction
Eye and Face protection
Arm and Hand protection
Foot and Leg protection
HARD HATS WORK BY DISSIPATING FORCE
ARM AND HAND PROTECTION
FOOT AND LEG PROTECTION
LOOSE CLOTHING HAZARD
Lathe machine is also known as “ the mother/father of the entire tool family”.
Lathe is one of the most impotent machine tool in the metalworking industry.
A lathe operates on the principle of rotating workpiece and a fixed cutting
The cutting tool is feed into workpiece which rotates about its own axis, causing
workpiece to be formed to the desired shape.
The lathe machine is one of the oldest and most impotent
As early as 1569, wood lathes were in use in France. The lathe
machine was adapted to metal cutting in England during the
Lathe machine also called “Engine Lathe” because the first
type of lathe was driven by a steam engine.
TYPES OF LATHE MACHINE
Computer controlled lathe
LATHE MACHINE OPERATION
Turning: to remove material from the outside diameter of a
work piece to obtain a finished surface .
Facing: to produce a flat surface at the end of the workpiece
for making face grooves.
Boring: to enlarge a hole or cylindrical cavity made by a
previous process or to produce circular internal grooves.
Drilling: to produce a hole on the workpiece.
Reaming: to finishing the drilling hole.
Threading: to produce external or internal threads on the
Knurling: to produce a regularly shaped roughness on the
LATHE MACHINE AND ITS PARTS
THE MILLING MACHINE
• Developed in 1860’s.
•Can be used for milling, drilling, boring, and reaming.
• Can machine in one , two, or three planes, X,Y,Z
• Used to produce one or more machined surfaces accurately on
workpiece,One or more rotary milling cutters.
• workpiece held on work table or holding device and brought into
contact with cutter
• Vertical milling machine most common
• Horizontal milling machine handles operation normally
performed by other tools
TYPES OF MILLING AND ITS PARTS
VERITY OF OPERATION
End milling. keyway cutting .
T-slot and circular slot
Many facing operation
done with fly tool.
VERITY OF MILLING CUTTERS
• What is a CNC Machine?
• CNC : Computer Numerical Control
• Conventionally, an operator decides and adjusts
various machines parameters like feed , depth of
cut etc depending on type of job , and controls
the slide movements by hand. In a CNC Machine
functions and slide movements are controlled by
motors using computer programs.
TYPES OF CNC MACHINES
There are many different types of CNC
Machines used in
industry, Such as:
•Mills and Machining Centers
•Lathes and Turning Centers
•EDM Sinker and wire cut Machines
•Flame and Laser-Cutting Machines
•Water Jet Profilers
HOW OPERATE CNC
Different ways of data input are :
•MDI : Manual Data Input.
•Program operation with CAD CAM.
• Program data transfer from PC to CNC
Machine Control Unit.
•Program data transfer from PC to DNC by
RS232 data cable.
HOW CNC LATHE AND MILLING MACHINES WORK
Controlled by G and M codes.
These are number values and co-ordinates.
Each number or code is assigned to a particular
Typed in manually to CAD/CAM by machine operators.
G & M codes are automatically generated by the
CNC LATHE AND MILLING