Mechanical Workshop The mechanical workshop., Formulas and forms for Mechanical Engineering. Aston University
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Mechanical Workshop The mechanical workshop., Formulas and forms for Mechanical Engineering. Aston University

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These vary from plasma detectors to full telescopes and from radiation shields to cryogenic coolers. Capabilities include CNC and manual, milling and turning along with EDM and sheet metal forming abilities. The engi...
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Mechanical Workshop

MECHANICAL WORKSHOP

Presentation on

By: Hafiz Muhammad Rizwan

PPE Suitable Personal Protective Equipment

must be used before using a tool,

Machines , check its safety instruction

PPE

 Head protection

 Eye and Face protection

 Hearing protection

 Arm and Hand protection

 Foot and Leg protection

 Protective clothing

HEAD PROTECTION

HARD HATS WORK BY DISSIPATING FORCE

EYE PROTECTION

HEARING PROTECTION

ARM AND HAND PROTECTION

FOOT AND LEG PROTECTION

PROTECTIVE CLOTHING

LOOSE CLOTHING HAZARD

THE LATHE

 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

tool .

 The cutting tool is feed into workpiece which rotates about its own axis, causing

workpiece to be formed to the desired shape.

HISTORY

 The lathe machine is one of the oldest and most impotent

machine tools.

 As early as 1569, wood lathes were in use in France. The lathe

machine was adapted to metal cutting in England during the

Industrial Revolution

 Lathe machine also called “Engine Lathe” because the first

type of lathe was driven by a steam engine.

TYPES OF LATHE MACHINE

 Engine Lathe

 Bench Lathe

Copy Lathe

 Automatic lathe

 Turret Lathe

 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

workpiece .

 Knurling: to produce a regularly shaped roughness on the

workpiece.

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

 Face milling.

 End milling.  keyway cutting .

 Dovetail cutting.

 T-slot and circular slot

cutting.

Many facing operation

done with fly tool.

 Gear cutting.

 Drilling.

 Boring.

VERITY OF MILLING CUTTERS

CNC MACHINES

• 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

•Drilling Machines

•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

operation.

 Typed in manually to CAD/CAM by machine operators.

 G & M codes are automatically generated by the

CAD/CAM software.

CNC LATHE AND MILLING

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