AHMAD KHAIRUL HAFIZI BIN WAHAB

Transcription

1 EFFECT OF PUNCHING FORCE ON CUTTING TOOL IN FORMING PROCESS USING FEA APPROACH AHMAD KHAIRUL HAFIZI BIN WAHAB A report submitted in partial fulfillment of The requirements for the award of the degree of Bachelor of Mechanical Engineering With Manufacturing Engineering Faculty of Mechanical Engineering UNIVERSITI MALAYSIA PAHANG NOVEMBER 2009

2 iv STUDENT S DECLARATION I hereby declare that the work in this project is my own except for quotations and summaries which have been duly acknowledged. The project has not been accepted for any degree and is not concurently submitted for award of other degree. Signature :... Name : AHMAD KHAIRUL HAFIZI BIN WAHAB ID Number : ME Date :...

3 ix TABLE OF CONTENTS Page EXAMINER S DECLARATION ii SUPERVISOR S DECLARATION iii STUDENT S DECLARATION iv ACKNOWLEDGEMENTS vi ABSTRACT vii ABSTRAK viii TABLE OF CONTENTS ix LIST OF TABLES xii LIST OF FIGURES xiii LIST OF SYMBOLS/ABREVIATION xv CHAPTER 1 INTRODUCTION 1.1 Project Background Objectives Scopes Problem Statement 3

4 x CHAPTER 2 LITERATURE REVIEW Introduction Press Traumatic 2020 Rotation FMC Sheet Metal Forming Process Shearing Shearing Process Sheet Metal Characteristics Punching Tool and Tool Wear Material Salection and Materials in Design Finite Element Analysis Algor Simulation CHAPTER 3 METHODOLOGY Introduction Flow Chart for the FYP I Flow Chart for the FYP II Methodology of Experiment Measurement on Actual Tool using CMM Finite Element Method Design via SolidWorks Software Analysis via FEA Software (ALGOR) Conclusion

5 xi CHAPTER 4 RESULTS AND DISCUSSION 4.1 Introduction Result from the Simulation Result for punching force 180kN Result for punching force 140kN Result for punching force 100kN Summary CHAPTER 5 CONCLUSION AND RECOMMENDATION 5.1 Conclusions Recommendations 42 REFERENCES 43 APPENDICES A Gantt chart FYP I / FYP II 45 B Aluminum 1100-H18 46 C ALGOR simulation result 48 D Result of stress value versus punch force 52 E Result of stress value versus percentage of clearance 54

6 xii LIST OF TABLES Table No. Title Page 2.1 Technical data of TruPunch 2020R Forming process categories Punching Speed Table Clearance preside percentage of stock thickness Result of stress value 36

7 xiii LIST OF FIGURES Figure No. Title Page 2.1 CNC punching machine TruPunch 2020R (a) Punching (piercing) and blanking. (b) Examples of various shearing operations on sheet metal (a) Schematic illustration of shearing with a punch and die, indicating some of the process variables. (b) Characteristic features of a punched hole and (c) Characteristic features of the slug The cutting tool of punching machine TruPunch 2020R Project flow chart FYP Project flow chart FYP Design of cutting tool, sheet metal and dies Result of Stress von Misses for clearance 3.3% at 180kN Result of Stress von Misses for clearance 2.8% at 180kN Result of Stress von Misses for clearance 2.3% at 180kN Result of Stress von Misses for clearance 1.8% at 180kN Result of Stress von Misses for clearance 3.3% at 140kN Result of Stress von Misses for clearance 2.8% at 140kN Result of Stress von Misses for clearance 2.3% at 140kN Result of Stress von Misses for clearance 1.8% at 140kN

8 xiv Result of Stress von Misses for clearance 3.3% at 100kN Result of Stress von Misses for clearance 2.8% at 100kN Result of Stress von Misses for clearance 2.3% at 100kN Result of Stress von Misses for clearance 1.8% at 100kN Result of stress value versus punch force for clearance at 1.8% Result of stress value versus clearance percentage for punch force at 180kN Maximum shear stress distribution as clearance and punching force Result of stress value versus punch force for clearance at 2.3% Result of stress value versus punch force for clearance at 2.8% Result of stress value versus punch force for clearance at 3.3% Result of stress value versus clearance percentage for punch force at 140kN Result of stress value versus clearance percentage for punch force at 140kN

9 xv LIST OF SYMBOLS/ABBREVIATIONS CNC CAD FEA FYP CMM IGES Computer Numerical Control Computer Aided Design Finite Element Analysis Final Year Project Coordinate Measure Machine Initial Graphics Exchange Specification