ABSTRACT
The design and fabrication of a reciprocating nail gasket is a new
innovation in technology. The one in existence is manually operated. In
which a punch that is adjacent to a die is mounted to the handle which
is attached to the shaft. A helical spring that is incorporated to the
shaft of the punch, helps the handle return to its initial position,
which makes the machines tedious and stressful to operate. When the
handle is pulled down from its initial position, the punch passes
through the die that is placed vertically adjacent to the punch thereby
blanking out the felt materials. The number of the gasket produced is
proportional to the strength of the operator. But in our design, we
incorporated a geared motor which does the cutting in a reciprocating
form, while the operator just drags the felt material to the die where
it is cut. The efficiency of the machine is well above 75%, it can
produce 216 felts per minutes . sprockets and chains are used to
transfer power instead of belts in other to effect good phases
relationship. The material used for the punch is stainless steel rod.
The machine is statically and dynamically balanced to curb noise and
vibration. One and half (11/2) inch angle iron was used in fabricating
the skeletal frame.
Appropriate materials were subsequently selected and fabricated to
required size. The machine was then to perform efficiently thus
satisfying the objective for which it was designed.
TABLE OF CONTENTS
Chapter one: Introduction
1.1 Background of study
1.2 Purpose of study
1.3 Scope of study
Chapter Two: Literature Review
2.1 Specification of problems
2.2 Field survey/study
2.3 Different types of gasket and their uses
Chapter Three: Design Consideration, Specification and Construction
3.1 Design factors/Consideration
3.2 Material selection
3.3 Tools and Equipments Employed
3.4 Design of welded Connections
Chapter Four: Design Calculations and Analysis of the Machine
4.1 Forces analysis on the reciprocating mechanism
4.2 Calculating the displacement, velocity and acceleration of the slider
4.3 Estimating the power of the geared motor
4.4 Chain length calculation
4.5 Design of sprocket teeth for roller chain
4.6 Chain drive selection
Chapter Five: Fabrication Procedure, Materials Selection, Principle of Operation and Cost Analysis.
5.1 Fabrication Procedure
5.2 Materials selection
5.3 Cost analysis
5.4 Guidelines in Designing for production
Recommendations
References
CHAPTER ONE
INTRODUCTION
Following the advancement of technology, and the need to eliminate
the archaic method of producing nail gasket in this era, which really
decreases production.
The aim of our improved motorized nail gasket cutting
machine, it to increase production drastically and to reduce human
fatigue and cost of the product.
The materials employed in this design and construction of
the machine is mechanically reliable. this work is also helped to act
as a catalyst and encouragement towards the promotion of indigenous
ingenuity in technological development of our country. And federal
government’s involvement in encouraging and funding of degree
projects to construct machines that would help the nation.
1.1 BACKGROUND OF STUDY
Nigeria is still a developing nation, federal government has mapped
out huge money for industrial buildings, housing estates, and foreign
investors are coming into the country to invest their various business.
This motorized nail gasket producing machines will really boast
production and also help increase revenue generated through exportation
of the product.
1.2 PURPOSE OF THE STUDY
The machine is existence manually operated in totality of the
product produced by the machine is proportional to the strength of the
operator. And the manual one is difficult to maintain and durability not
guaranteed as in the case of these that used low quality material in
construction.
This particular work understands the problems, there by
incorporating geared motor so that number of gaskets produced will be
proportional to the horsepower of the motor i.e production increases.
1.3 SCOPE OF THE STUDY
This design and construction work is considered with only a
prototype. A theoretical improvement consideration and design of all
components parts of the machine will be guided by the design of standard
components.
Problems is also covered in other to realized the purpose
of the project. This work covers the stages of machine development,
design/fabrication of components parts and construction of its parts.
Process involved in the design are analyzed. Stresses on deformation
forces were given consideration. This report covers detail parts and
assembly drawing with recommendation on manufacturing methods. Choice of
design was subject to information modification at the energy of many
factors beyond strength and rigidity which were important; these
include fabrication techniques and material availability.