1. 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

2. Introduction
This 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.

3. Problem Statement

4. 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

5. Literature Review
Study of Journals
Study of Hydraulic and Pneumatic system
Study of sheet metal forming operations

6. Advancements in Literature
Change in work material
Automatic work feed system
Simple design
Performing other forming operations by
changing the punch and die.

7. Hydraulic Power System

8. Pneumatic Power System

9. Sheet Metal Forming Operations
Punching / Blanking
Stamping
Embossing
Curling
Bending
Lancing
Notching

10. Shearing Mechanism

11. Research Methodology

12. Gantt Chart

13. Preliminary Research and
Experimental Work Done
 Market Survey
 Calculations

14. Market Survey

15. Conclusion From Market Survey

16. Calculation
 Hydraulic System Calculations
Diameter of hole to be punch, d=10mm
Punching Force, F=19470.36 N
Pressure available at pump, P=40 bar
Bore of cylinder, D=78.72mm=80mm
Pneumatic System Calculations
Diameter of hole to be punch, d=10mm
Punching Force, F=6207.06 N
Pressure available at pump, P=7 bar
Bore of cylinder, D=106.25mm=125mm

17. Frame Calculation

18. Design of Beam 1 And 2
σyt=53700 Psi or, 370.25MPa
FOS=3
Width of Beam, b=30mm
Thickness of Beam, t=34.669mm=35mm

19. Design of Beam 3 And 4
σyt=53700 Psi or, 370.25MPa
FOS=3
Width of Beam, b=30mm
Thickness of Beam, t`
=34.669mm=35mm

20. Design of Beam 5 And 6
σyt=53700 Psi or, 370.25MPa
FOS=3
Width of Beam, b=50mm
Thickness of Beam, t`
=21.90mm=22mm

21. Design of Punch and Die
 For Hydraulic System
Diameter of the hole=10mm=Diameter of punch
Clearance, C=5% of thickness
Thickness of sheet, t=1.61mm
i.e. C=( 5/100 )×1.61 = 0.0805mm
Diameter of die , Dd=dp+2C =10.161mm
For Pneumatic System
Diameter of the hole=10mm=Diameter of punch
Clearance, C=5% of thickness
Thickness of sheet, t=0.51mm
i.e. C=( 5/100 )×0.51 = 0.0255mm
Diameter of die , Dd=dp+2C =10.051mm

22. Design in Pro-E

23. 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

24. 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

25. Websites
1.http://www.unc.edu/~rowlett/units/scales/sheet
metal.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