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This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.

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ACKNOWLEDGEMENT

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A bench vise is a tool used to hold or clamp a workpiece to allow operations such as cutting, filing, milling, drilling, grinding, etc. It is usually made from cast iron with a fixed jaw and another parallel jaw which moves towards or away from the fixed jaw using the screw. Design and fabrication of a modified vise to improve the productivity, flexibility and comfortability of the existing bench vises have been achieved in this study. In this vice, we can also hold components of different shapes with the help of the adjustable jaws that can be provided if needed. A lever slides the movable jaw, using a lead screw for forward and reverse movement of the movable jaw. Hydraulic machine vice can be used for all types of machines.

 

 

TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
CHAPTER ONE
1.0      INTRODUCTION

• BACKGROUND OF THE PROJECT
• PROBLEM STATEMENT
• AIM AND OBJECTIVE OF THE PROJECT
• DVANTAGES AND DISADVANTAGES OF THE PROJECT
• APPLICATION OF THE PROJECT
• DEFINITION OF TERMS

CHAPTER TWO
LITERATURE REVIEW

• HYDRAULIC MACHINES
• HISTORICAL BACKGROUND OF HYDRAULIC MACHINES
• COMPONENTS OF HYDRAULIC MACHINES
• MACHINE VICE
•  PARTS OF A MACHINE VICE
• REVIEW OF RELATED STUDIES

CHAPTER THREE

• MATERIALS AND COMPONENTS USED
• Materials required
• Components Used

CHAPTER FOUR

• MACHINE DESIGN
• WORKING PRINCIPLE
• MACHINE LINE DIAGRAM
• SAFETY PRECAUTIONS
• SAFETY | OPERATOR SAFETY

CHAPTER FIVE

• CONCLUSION

REFERENCES

 

CHAPTER ONE
1.0                                                            INTRODUCTION
1.1                                             BACKGROUND OF THE PROJECT
Fluid power is the technology that deals with the generation, control and transmission of power using pressurized fluids. Fluid power systems are generally grouped under two broad classifications. These are hydraulics and pneumatics Hydraulic systems uses liquids such as petroleum oil, water, synthetic oil etc.
Pneumatic system uses air or other gases, Liquids provide a very rigid medium for transporting power and thus can provide large forces to move loads with almost accuracy and precision. On other hand pneumatic systems are less expensive to build and operate. Fluid power equipment ranges in size from huge hydraulic presses to small fluid components used to build reliable control systems.
A machine vice is like an extra hand. Its purpose is to hold material steady, allowing you to use both hands to work on the material with other tools. The machine vice is of the screw base bench design. It is a heavyweight, portable vice. It is attached to a table or bench with the mounting screw holes. It has rough jaws for holding material with stationary base. Screw base machine vices are considered most appropriate to hold light materials or in areas where a heavier vice is not available such as laboratories and school workshops.
It consists of a mounting base or body which is secured to the machine table, a stationary jaw against which work piece is located, a movable jaw and screw mechanism consisting of a buttress-threaded spindle and handle. When the spindle is rotated in the clockwise direction using the handle, the jaws move closer thus clamping the workpiece against the stationary jaw. This clamping action holds the part securely while the machining operation takes place. On the other hand, when turned in the anticlockwise direction, the jaws move away thus loosening the grip on the work piece
The stiffness created through the design that pulled the jaw down has the added benefit of pulling the nut and driving the movable jaw up creating a sandwich of vice body, nut and movable jaw. The resulting stiffness and dampening allowed a significantly lighter vice to be offered, allowing for manual lifting and positioning of the vice on a machine table, which contributed to its popularity.  The stationary jaw is cast integral with the vice body. It is a good selection when density and absolute minimum deflection is needed. This vice hardware is adaptable for installation in a variety of positions, and on different styles of bench tops. They are ideal for sawing, sanding, plaining, drilling, screwing and soldering.
Hydraulic vice is capable of holding small and minute work pieces with a large force thus enabling accurate and precise operation. The project combines the advantages of hydraulics, thus eliminating the drawbacks that may be associated with the use of fluid power Also the hydraulic pressure pack amplifiers the force with which the vice grips the work piece. The highlights of this hydraulic vice are that it is very economical, accurate, and easy to operate and has wide variety of applications.

1.2                                     PROBLEM STATEMENT
During machining, holding the component firmly is always a crucial task. Workpiece never has the same size, shape and material. It requires different forces and different sizes of clamping jaws. In an ordinary vice, the human power requirement is more to tighten the heavy jobs, but in the machine vice, the hydraulic arrangement is used to tighten the job automatically. In this paper, reduction of human effort and enhancing safety play a vital role while designing and fabricating the machine vice, which is used to hold the components during heavy machining works. In normal machine vice, the human labor involved in operating the handle to grip the component tightly is more. Excess amount of human effort generally results in damage to the workpiece. This may be avoided using hydraulic machine vice, in which the workpiece cannot be damaged while clamping the job, as only adequate amount of pressure is exerted to tighten the job.

1.3   AIM AND OBJECTIVES OF THE PROJECT
The main aim of the study is to fabricate a low cost hydraulic vise using available local material.
The main objectives are:-

• To reduce man power
• To increase the efficiency of the plant
• To reduce the work load
• To reduce the production cost
• To reduce the production time
• To reduce the material handling
• To reduce the fatigue of workers
• To achieve good product quality
• Less maintenance

1.4                        DVANTAGES AND DISADVANTAGES OF THE PROJECT

Advantages:-

• Reduces the working time in holding the work pieces.
• Accuracy in holding when compared to ordinary to ordinary vices.
• Less effort required.
• Increases the productivity.

Disadvantages:-

• In hydraulic system leakages will be there.
• Dirty premises.
• Expanse of components in hydraulic system

1.5     APPLICATION OF THE PROJECT
Hydraulic vises are versatile tools and are found in any shop, garage or maintenance department. They provide hands-free operation in both horizontal and vertical positions to perform clamping, pressing or work-holding applications. For example:
U-joint removal
Form steel
Woodworking
Sawing Cutting
steel/metal Drilling & boring
Cutting conduit
Fabrication
Assembly
Auto maintenance
Regripping golf clubs
Rebuilding regulators
Home projects
Planning

1.6                                      DEFINITION OF TERMS
Bench Vise: A bench vise is like an extra hand and is a common tool found in any shop or garage. It is attached to a workbench and its purpose is to hold material steady, allowing you to use both hands to work on the material with other tools. They are ideal for sawing, sanding, planing, drilling, screwing, soldering and more.
Conventional Bench Vise: A conventional bench vise is manually operated. The user has to crank down on a lever to operate it. This is a high risk for injury and/or strained muscles. It also cannot provide dependable power, control or stability. This is even more evident when additional help is necessary for set-up and operation.
Hydraulic Bench: A hydraulic bench vise provides power and performance with the efficiency of hydraulic power. The user operates the vise by use of a hydraulic foot pump. It is user and handicap friendly and eliminates physical limitations and risk factors.

CHAPTER FIVE
5.1                                                              CONCLUSION
A Hydraulic vise is one of the most versatile tools in the fitting and assembly workshops which firmly support and hold the workpiece to perform varying operations like; drilling, striking, filing, etc.
The main advantage of the hydraulic vice is that it reduces human effort, working time. The expanse we contribute for making this can be got from the production. Because this device reduces the production time, so that production per day increases, because of that profit increases. This hydraulic bench is a very useful and helpful device for the workshop and industries. The smooth and accurate holding of work piece increases the quality of work by using this device.

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CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of"design and construction of hydraulic vise"is also available. Order full work to download. Chapter two of"design and construction of hydraulic vise"consists of the literature review. In this chapter all the related work on"design and construction of hydraulic vise"was reviewed.

CHAPTER THREE: The complete chapter three of"design and construction of hydraulic vise"is available. Order full work to download. Chapter three of"design and construction of hydraulic vise"consists of the methodology. In this chapter all the method used in carrying out this work was discussed.

CHAPTER FOUR: The complete chapter four of"design and construction of hydraulic vise"is available. Order full work to download. Chapter four of"design and construction of hydraulic vise"consists of all the test conducted during the work and the result gotten after the whole work

CHAPTER FIVE: The complete chapter five of"design and construction of hydraulic vise" is available. Order full work to download. Chapter five of"design and construction of hydraulic vise" consist of conclusion, recommendation and references.

 

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