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