ANNA UNIVERISTY, CHENNAI 600 025BONAFIDE CERTIFICATE Certified that this project report titled “DESIGN AND FABRICATION OF MULTI NUT REMOVER AND TIGHTENER” is the bonafide work submitted by the following students, R.MANICKAM 613514114021 N.MOHAMMED SUHAEL 613514114022 S.MUTHARASU 613514114025 P.RAJA 613514114032 who carried out the project work under my supervision. Certified further, that to the best of my knowledge the work reported here in does not from part of any other project report or dissertation on the basis of which a degree or award was conferred on an earlier occasion on this or any other candidate. SIGNATURE SIGNATURE Prof. S. NADARAJAN, M.E., Prof. M. VIJAY, M.E., HEAD OF THE DEPARTMENT, SUPERVISOR, Department of Mechanical Engineering, Department of Mechanical Engineering, Government College of Engineering, Government College of Engineering, Dharmapuri - 636 704. Dharmapuri - 636 704. Submitted for the project work viva voce examination held on ______________________ INTERNAL EXAMINER EXTERNAL EXAMINER 2 ACKNOWLEDGEMENT We thank Dr. P. THAMARAI, M.E., Ph.D., Principal who always served as a source of inspiration and encouraged us throughout the project. We thank Prof. S. NADARAJAN, M.E., Head of the Department of Mechanical Engineering who always served as a source of inspiration and encouraged us throughout the project. We would like to thank my supervisor Prof. M. VIJAY, M.E., Assistant Professor, Department of Mechanical Engineering, for her awe-inspiring ideas, guidance and for providing all the facilities for the successful completion of the project work. We would like to thank our Faculty Advisor Prof. M. VIJAY, M.E., Assistant Professor, Department of Mechanical Engineering, for giving constant support in doing this project work. We would like to thank other faculty members for giving constant support in doing this project work. We extend our gratitude to our parents and countless friends for their endless support right from commencement of the project. 3 ABSTRACT Today the life of man is simple and comfortable as various resources are available for each and process that a person has to perform in his day to day life, and these resources and equipment helps the person to perform his work in efficient and less time consuming manner. Today, the four wheeler means a car available for more than 70% peoples in the urban areas. There are many equipments are designed so that any operation required to be done on a car can be done easily and in a shorter period of time as possible. There is a problem that can be considered as time consuming and requires more effort which is the opening of wheel of a car for its replacement or any other operation. Today the unit of a wheel are opened by one of which requires more efforts and consume a lot of time for this problem the multi nut remover is an solution. Multi nut remover is a special purpose tool made to open/close all the nuts of a wheel in one time less effort. Although various methods of opening nuts are used, but they require a lot of effort to open a single nut one by one. With the help of Multi nut remover we made arrangement to open/close all the nuts by amplifying the torque. Different types of gears & sprockets are arranged in such a way that if we apply 1Nm torque with air gun, then we get 20Nm torque as output for combined operation. In the work, we concentrate only one application domain i.e. Wheels of car- Maruti Swift. The main objective of work is to develop a mechanism in one assembly, which can be made in automobiles. It can be successfully used as a standard tool provided with a new vehicle. Also it can be used in assembly line of automobiles, workshops and service stations. Design is simple, easily workable, and economical and try to satisfy all the aspects of design consideration. 4 TABLE OF CONTENTS 5 CHAPTER NO TITLE PAGE NO ABSTRACT iv LIST OF FIGURES ix LIST OF TABLES viii LIST OF SYMBOLS x 1 INTRODUCTION 1 1.1 Introduction 1 1.2 List of Parts 2 1.3 Application 1.4 Objective 3 1.5 Organization at Work 3 3 2 LITERATURE REVIEW 5 2.1 Introduction 5 3 METHODOLOGY 9 3.1 Methodology 9 4 MATERIAL SELECTION 10 4.1 Introduction To Engineering Materials 10 4.2.Engineering Material For Product 12 - Design - 4.3.Selection Criteria 11 4.3.1Cost Of The Material 11 4.3.2Availability 11 4.3.3Manufacturing Process 12 4.3.4Properties Of The Material 12 4.4 Selection Of Material 13 4.4.3 Mild Steel 14 5 DESIGN PROCEDURE 15 5.1 Design And Product Cycle 15 5.2 The Challenges Of Design engineering 15 5.3 Qualities Of A Good Design 16 5.4 Introduction To Design 17 5.5 Designing 19 5.6 Design Procedure 6For Gear & Pinion 19 5.7 Design For Pinion Shaft 20 21 LIST OF TABLES TABLE SUBJECT PAGE NO NO 1.2 LIST OF PARTS 2 5. DESIGNING 19 9.1 COST ESTIMATION 34 LIST OF FIGURES 7 FIGURE SUBJECT PAGE NO NO 3.1 METHODOLOGY 11 5.1 LIFE CIRCLE OF A 18 PRODUCT 5.2 TYPES OF SPANNER 18 5.3 MULTI NUT REMOVER 18 6.1 GEARS 24 6.2 BASE PLATE OR ROD 25 6.3 SPANNER BOX 25 6.4 CENTRAL SHAFT WITH 26 SPANNER BOX 10.1 FRONT VIEW 35 10.2 BOTTOM VIEW 35 LIST OF SYMBOLS 8 The following symbols have been used in our project and its meaning is clearly mentioned respective to it: SYMBOLS DESCRIPTION N/mm Newton per millimeter mm Millimeter N Newton N mm Newton. millimeter Ø Pi MPa Mega pascal Nm Newton meter 9