capstonepresentation
TRANSCRIPT
Low Cost, High Speed, Automatic Punching Machine
Under the guidance of
Mr. C. H. Patel
Submitted By
Samarth Purohit 10906147
Parmod Kumar 10900960
M. Gopi Krishna 10907035
Praveen Singh Rawat 10906853
Gaurav Sharma 10904132
IntroductionThis project is study about the design and fabrication
of pneumatic and hydraulic punching tool.
To study pneumatics, hydraulics and dies for
punching tool.
To get familiarize with the technology on sheet metal
forming.
Problem Statement
Objective of the Study
To design mechanical system of a punching tool using hydraulic and pneumatic concepts
To punch the sheet of varying thickness at the same time
To provide automatic feeding of metal sheet
To do the comparative study of both concepts
To perform other forming operations by changing tool and die
Literature Review
Study of Journals
Study of Hydraulic and Pneumatic system
Study of sheet metal forming operations
Advancements in Literature
Change in work material
Automatic work feed system
Simple design
Performing other forming operations by
changing the punch and die.
Hydraulic Power System
Pneumatic Power System
Sheet Metal Forming OperationsPunching / Blanking
Stamping
Embossing
Curling
Bending
Lancing
Notching
Shearing Mechanism
Research Methodology
Gantt Chart
Preliminary Research and Experimental Work Done
Market Survey
Calculations
Market Survey
Conclusion From Market Survey
Calculation Hydraulic System CalculationsDiameter of hole to be punch, d=10mmPunching Force, F=19470.36 NPressure available at pump, P=40 barBore of cylinder, D=78.72mm=80mmPneumatic System CalculationsDiameter of hole to be punch, d=10mmPunching Force, F=6207.06 NPressure available at pump, P=7 barBore of cylinder, D=106.25mm=125mm
Frame Calculation
Design of Beam 1 And 2
σyt=53700 Psi or, 370.25MPaFOS=3Width of Beam, b=30mmThickness of Beam, t=34.669mm=35mm
Design of Beam 3 And 4
σyt=53700 Psi or, 370.25MPaFOS=3Width of Beam, b=30mmThickness of Beam, t`=34.669mm=35mm
Design of Beam 5 And 6
σyt=53700 Psi or, 370.25MPaFOS=3Width of Beam, b=50mmThickness of Beam, t`=21.90mm=22mm
Design of Punch and Die For Hydraulic SystemDiameter of the hole=10mm=Diameter of punch Clearance, C=5% of thickness Thickness of sheet, t=1.61mmi.e. C=( 5/100 )×1.61 = 0.0805mm Diameter of die , Dd=dp+2C =10.161mm For Pneumatic SystemDiameter of the hole=10mm=Diameter of punch Clearance, C=5% of thickness Thickness of sheet, t=0.51mmi.e. C=( 5/100 )×0.51 = 0.0255mm Diameter of die , Dd=dp+2C =10.051mm
Design in Pro-E
References Books
1. Fluid Power by Anthony Esposito, 6th Edition
2. Fluid Power Engineering by M. Galal Rabie, 4th
Edition
3. Hydraulics and Pneumatics by Andrew Parr
4. Manufacturing Process by R.B. Gupta B.K. Gupta
5. Fundamentals of Modern Manufacturing by Mikell P.
Groover, 3rd Edition
6. Design Data Book by PSG Coimbatore
Journals 1. Pneumatic Auto Feed Punching and Riveting
Machine by A.S. Aditya Polapragada1, K. Sri Varsha
2. The Research of New Type Hydraulic Breaker with Strike Energy and Frequency of Adjusted by Guoping Yang & Yubao Chen
3. Design and Development of PLC operated Hydraulic System for Machining Process by Prof. N.V.Hargude, Prof. P.R.Patil
Websites 1.http://www.unc.edu/~rowlett/units/scales/
sheetmetal.html 2. http://www.onlinemetals.com/steelguide.cfm 3.
http://www.wisc-online.com/objects/ViewObject.aspx?ID=HYP4307
4.http://www.nptel.iitm.ac.in/courses/112101005/downloads/Module_3_Lecture_4 final.pdf