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NAME OF THE PROJECT:

AUTOMATION OF PNEUMATIC SHEET METAL BENDING MACHINE

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PROJECT MEMBER:

D.Malaravan
M.Prabakaran
S.Santhoshkumar

GUIDE NAME:

Saravanan.k
Production engineer(SAF)

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PRIYADARSHINI ENGINEERING COLLEGE VANIYAMBADI


SCOPE OF THE PROJECT:

THE BENDING MACHINE IS ONE OF THE MOST IMPORTANT MACHINE TOOL IN SHEET METAL WORK SHOP. IT IS PRIMARILY DESIGNED FOR V-DIE BENDING. THE BEND HAS BEEN MADE WITH THE HELP OF PUNCH WHICH EXERTS LARGE FORCE ON THE WORK CLAMPED ON THE DIE. THE BENDING MACHINE IS DESIGNED IN SUCH A WAY THAT, IT WORKS AUTOMATICALLY. AUTOMATION IS ACHIEVED WITH THE HELP OF ELECTRO-PNEUMATIC SYSTEM.

WORK DONE UP TO NOW:
MATERIAL SELECTION FOR BENDING

SHEET METAL WHICH IS CHOSEN FOR BENDING IS ALUMINUM. ALUMINUM IS SELECTED DUE TO THE FOLLOWING REASONS
IT IS A LIGHT METAL, WITH A DENSITY ABOUT A THIRD THAT OF STEEL OR BRASS.
IT IS VERY DUCTILE
IT HAS HIGHER RESISTANCE TO CORROSION THAN MANY OTHER METALS, OWING TO THE PROTECTION CONFERRED BY THE THIN BUT TENACIOUS FILM OF OXIDE WHICH FORMS ON ITS SURFACE

PROPERTIES OF ALUMINUM

PHYSICAL PROPERTIES
DENSITY, 2700 KG/M3
MELTING POINT 660° C
THERMAL CONDUCTIVITY, KA 220 W/M °C
YOUNG™S MODULUS, E 0.675×105 N/MM2
RIGIDITY MODULUS, G 0.26×105 N/MM2
POISSON RATIO, 0.34



MECHANICAL PROPERTIES
TENSILE STRENGTH, ST 65 N/MM2
YIELD STRENGTH, SY 150-200 N/MM2
ULTIMATE STRENGTH, SU 200-400 N/MM2







THE FOLLOWING COMPONENTS REQUIRED AND SELECTED TO ACCOMPLISH AUTOMATION FOR BENDING.

ELEMENTS OF BENDING MACHINE
S.NO COMPONENTS QUANTITY
1 COMPRESSOR -
2 FRL UNIT 1
3 DOUBLE ACTING CYLINDER 3
4 5/2-WAY SOLENOID VALVE 1
5 2/2-WAY ROLLER VALVE 4
6 PROXIMITY SENSOR 1
7 HOSE AND FITTINGS AS REQUIRED
8 PLC KIT -
9 PUNCH -
10 DIE -











CREATED THE MODEL SETUP OF OUR PROJECT


MACHINE SETUP (MODEL)




WORK TO BE DONE:

1. TO FIND THE WEIGHT OF THE WORK PIECE:

FOR THAT WE ASSUMED THE SIZE OF THE WORK PIECE

MATERIAL = ALUMINUM

LENGTH, L=100 MM

BREADTH, B= 100 MM

THICKNESS, T= 1MM
DESIGN PROCEDURE FOR CLAMPING CYLINDER:
TO FIND THE AREA OF THE CLAMPING CYLINDER
TO FIND THE CLAMPING FORCE OF THE CYLINDER
TO FIND THE PISTON FORCE:
DESIGN PROCEDURE FOR BENDING CYLINDER
PRESSURE REQUIRE TO BEND THE WORK PIECE
TO FIND THE BEND ALLOWANCE
DESIGN PROCEDURE FOR UNLOADING CYLINDER
TO FIND THE AREA OF THE UNLOADING CYLINDER
TO FIND THE UNLOADING FORCE OF THE CYLINDER

DESIGN OF PNEUMATIC CIRCUIT AND WORKING PROCEDURE TO DONE WITH CLEAR EXPLANATION.


THESE ARE ALL THE POINTS TO BE DONE IN THE UPCOMING PERIOD OF DURATION.

please give me full report

[attachment=6485]

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This article is presented by:
Shrikrishan Juneja
Ritesh Sharma

Sheet Metal Design

Contents
Introduction
Metals used in Sheet Metal Working
Gauges
Sheet Metal Forming Processes
Comparison to other forming processes
Die Manufacturing
Progressive die with scrap strip and stamping
Die operations and types
Design calculations
For Blanking and Piercing
Draw Die Designing
Bending Design
Punching Design
Die Construction
Workshop Practice
Safety Guide for Sheet Metal Workers


Introduction
Sheet metal is simply metal formed into thin and flat pieces. It is one of the fundamental forms used in metalworking, and can be cut and bent into a variety of different shapes.

The thickness of the sheet metal is called its gauge. The gauge of sheet metal ranges from 30 gauge to about 8 gauge

Sheet metal working involves manufacturing articles from sheet metal or thin sheets, which may be of black iron, galvanized iron, copper or stainless steel.
Metals used in Sheet Metal Working

A large variety of metals in the form of sheets and plates used in sheet metal working include black iron, galvanized iron, copper, brass, tin, aluminum, lead and zinc.


The thickness of sheets vary inversely as their gauge number, higher the gauge number, smaller the thickness and vice-versa.


Important metals used in sheet metal working are described below. Black Iron Sheet or uncoated sheet is the cheapest material used for sheet metal work. Since these sheets carry no protection coatings on their surfaces, these are likely to corrode quickly.These are, therefore, used for marking those articles, which are later enamelled or painted before use.

Gauge
The sheet metal gauge (sometimes spelled "gage") indicates the standard thickness of sheet metal for a specific material. As the gauge number increases, the material thickness decreases



Sheet metal thickness gauges for steel are based on a weight of 41.82 pounds per square foot per inch of thickness. This is known as the Manufacturers' Standard Gage for Sheet Steel.

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