THE DESIGN AND FABRICATION OF MECHANCIAL LAWN MOWER

By

ONUOHA OKECHUKWU

Presented To

Department of Mechanical Engineering

ABSTRACT

    Mechanical engineering department of the named institute has many non operational machines sequel to this fact maintenance which resulted to non development and non maintenance of the institute community at large.
    By this fact the project (mechanical lawn mower) was constructed and design to help in the development and maintenance of institution, community and the society at large in the area of grass cutting in our environment and the improvement in our food production and also the reduction of manpower.
    In other words, during the construction and design of this project many things were put into consideration such as our environmental condition, effectiveness of the machine and also maintenance were well observed and a minimized cost of maintenance and a highly successful repair was adopted and also the appropriate tools cost and quality of material were well consider.



TABLE OF CONTENTS

Title page
Letter of transmittal
Release page
Signature page
Approval page
Dedication
Acknowledgement
Abstract
Table of contents
List of symbols

CHAPTER ONE
1.0    Introduction

1.1    Identification of need
1.2    Literature review
1.3    Historical background of the project (scope)
1.4    Importance of the project no society
1.5    Aims and objectives of the project

CHAPTER TWO
2.0    Specification of problem

2.1    Scope of specification and condition of use
2.1.1    Characteristic
2.1.2     Performance
2.1.3     Appearance
2.1.4     Reliability and life
2.1.5     Synthesis of solution
2.1.6      Theory and analysis of problems

CHAPTER THREE
3.0    Design concept of the lawn mower
3.1    Design specification of the lawn mower
3.2    Design concept
3.3    Detail design of a lawn mower
3.4    Design solution
3.5    Material selection
3.6    Design calculation
3.7    Analysis of the problem

CHAPTER FOUR
4.0    Mode of construction
4.1    Tools/equipment use for the construction of the project
4.2    Fabrication techniques/sequence of operation
4.3    Assembly of the project
4.4    Description of each component
4.5    Safety precaution
4.6    Result of the operation carried out

CHAPTER FIVE
5.1    Estimation of cost
5.2    Conclusion of recommendation
References of bibliography


LIST OF SYMBOLS

G    =    Density
d    =    Diameter of the shaft
D    =    Diameter of the blade
W    =    Omega Angular Speed
J    =    Second Moment of inertia
M    =    Mass of the object
T    =    Torque
TI    =    Pie
V    =    Velocity
F    =    Cutting force
P    =    Power
    =    Shear stress
    =    Strain
L    =    Length
B    =    Breadth
H    =    Height


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