ABSTRACT
As a result of modern development in Science and Technology, most of the large scale industrial used machine were now modernized to simple small and efficient machines. Some of these machines were either operated manually or the aid of electricity.
For this reason, big metal sharpening machine was here reduced to simple term, which can be operated manually such as file and grinding machine for production firms and homes. This machine performs the same functions as the large industrial metal sharpening and dulling device which was reduced, but requires straight and also consumes time.
The simple metal sharpening and dulling device was constructed with a metal steel which is an old engineering materials. The following properties were put into consideration such as long lasting of the metal, its resistance to stresses and the preservation treatment of the metal steel since the efficiency of the machine depends on the strength of the metal steel and the grinding stone.
TABLE OF CONTENT
Title Page ii
Letter of Transmittal iii
Approval Page iv
Dedication v
Acknowledgement vi
Table of Contents vii
Abstract vi
CHAPTER ONE
1.0 INTORDUCTION 2
1.1 Background of the Study 1
1.2 Statement of the Problem 2
1.3 Aims/Objectives of the Study 3
1.5 Scope and Limitation of the study 4
CHAPTER TWO
2.0 Literature Review 7
2.1 Historical Background 7
2.2 Types of Metal Sharpening and Dulling 9
2.3 Dulling Device 16
2.4 Blade 17
2.5 Materials used in Making Blade 21
2.6 Mechanism / Principles of Sharpen and Dulling 22
CHAPTER THREE
3.1 Construction of a Metal Sharpening 23
CHAPTER FOUR
4.1 Result/ Analysis 27
CHAPTER FIVE
5.1 Discussion 30
5.2 Conclusion 32
5.3 Recommendation 35
INTRODUCTION
A metal sharpening device is a metal working and wood working tool used to cut find amounts of materials from a work piece. It is commonly referred to as a hand tool style which takes the form of a steel bar with a case hardened paralleled teeth.
Sharpening, therefore refers to as the process of heating or refining a sharp edge of appropriate shape on a tool or implement designed for cutting sharpening is done by grinding away material on the implement with an abrasive substance harder than the material of the implement, followed sometimes by processes to polish the sharp surface to increase smoothness and to correct small mechanical deformation without regrinding.
Most metal sharpening tools have a narrow pointed tang at one end to which a handle can be fitted. A similar tool is the rasp. This is an older form with simpler teeth. As they have larger clearance between teeth, these are usually used on soften non-metalic material (Ambrose etal 2007).
