10-04-2017, 08:36 PM
[attachment=3515]
NAME OF THE PROJECT:
AUTOMATION OF PNEUMATIC SHEET METAL BENDING MACHINE
PROJECT MEMBER:
D.Malaravan
M.Prabakaran
S.Santhoshkumar
GUIDE NAME:
Saravanan.k
Production engineer(SAF)
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.