The fixture used in cage at this time currently gives 6 nailguns in one cycle. This takes a lot of time to manufacture if the units are more in quantity. Also bending occurs at the tip of the nailguns due to load. To resolve this problem, a new fixture is designed which will give 10 nail guns at a time and reduce the bend

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Team members 1. Tripathi Pranav
2. Shah Shaimin
3. Shah Kushal
Team id :66605
INTERNAL GUIDE: PROFESSOR APEKSHA PATEL
EXTERNAL GUIDE: MANOJ YADAV

2. Project presentationProject presentation

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DESIGNING OF FIXTURE FOR NAILGUN
PROJECT INDUSTRY: DRE CASTING PVT LTD
Project Title

4. Keywords of the project
Objectives of the project
Main content
Project abstract
Steps taken
Tentative results
Overview of the project

5. The fixture used in cage at this time currently
gives 6 nailguns in one cycle.
This takes a lot of time to manufacture if the units
are more in quantity. Also bending occurs at the
tip of the nailguns due to load.
To resolve this problem, a new fixture is designed
which will give 10 nailguns at a time and reduce
the bending.
Project Abstract

6. Fixtures- A fixture is a work holding or support
device used in the manufacturing industry. Fixtures
are used to securely support and locate the work
ensuring that all parts produced using the fixture will
maintain conformity and interchangeability.
Nailgun- A nailgun or nailer is a type of tool used to
drive nails into wood or some other kind of material.
Cage for fixture- A cage is a big device in which the
fixtures are kept during the heat treatment process.
Important term used in the project

7. Gravity die casting (permanent mould casting)
Low pressure die casting
High pressure die casting
Types of aluminum casting

8. Casting is a manufacturing process on which a liquid
material is usually poured into a mold, which
contains a hollow cavity of the desired shape and
then allowed to solidify. The solidified part is also
known as casting, which is ejected or broken out of
the mold to complete the process
This project is related to the “gravity die casting”
“Gravity die casting” is repeatable casting process
used for non ferrous alloy parts like zinc, aluminum
and copper base alloys.
The process differs from HPDC in that Gravity rather
than high pressure is used to fill the mould with the
liquid alloy.
CASTING

9. The heated mould [Die or Tool] is coated with a die release
agent. The release agent spray also has a secondary
function in that it aids cooling of the mould face after the
previous part has been removed from the die.
Molten metal is poured into channels in the tool to allow the
material to fill all the extremities of the mould cavity. The metal
is either hand poured using steel ladles or dosed using
mechanical methods. Typically, there is a mould “down sprue”
that allows the alloy to enter the mould cavity from the lower
part of the die, reducing the formation of turbulence and
subsequent porosity and inclusions in the finished part.
Once the part has cooled sufficiently, the die is opened, either
manually or utilising mechanical methods.
Three key stages of GDC

10. Good dimensional accuracy
Smoother cast surface finish than sand casting
Improved mechanical properties compared to sand
casting
Thinner walls can be cast compared to sand casting
Reverse draft internal pockets and forms can be cast
in using preformed sand core inserts
Steel pins and inserts can be cast in to the part
Faster production times compared to other processes.
Once the tolling is proven, the product quality is very
repeatable.
Outsourced Tooling setup costs can be lower than UK
sand casting.
Advantages of GDC

12. Casting of Nailgun

13. Heat treatment involves the use of heating or
extreme chilling, normally to achieve a desired
result such as hardening or softening of a
material.
Heat treatment techniques include annealing,
tempering, normalizing and quenching.
HEAT TREATMENT OF NAILGUN

14. Solidifing: in furnace at 525degree Celsius for 8
hours.
Quenching : sudden quenching in water at 30degree
Celsius within 10 seconds
Natural ageing : up to 5 hours
Precipitation :keep in furnace at 165 degree celsius
for 8 hours
Hardness to be achived between 80-100 bHN
T6 heat treatment process

15. Problem occurs

16. A successful heat treatment handling fixture
combines maximum quantity of the customers
components with minimized fixture weight while
also supporting the component with the minimal
amount if damage and distortion.
In a specific case the productivity throughout was
increased with a reduction of fixture weight using
the customers existing furnace requirement.
FIXTURE

17. The modern fixture is no longer considered solely
in the heat treatment environment as many are
used as total handling fixtures throughout the
customers plant.
It is also essential that the fixture incorporates
fixtures compatible with good foundry practices.
In the modern manufacturnig environment,
individual components of a heat treatment fixture
can range from 1 to 3500 units.

18. Fixtures are designed using Solidworks 3D
software. This software enables detailed designs
into being produced, taking into account various
factors.
The design is based on the 3-2-1 principle.
Fixture Design

19. As we know that any free body has a total of
twelve degrees of freedom as below:
6 translational d.o.f : +X,+Y,+Z, -X, -Y,-Z and 6
rotational d.o.f
-Clockwise around X-axis
-Anticlockwise around X-axis
-Clockwise around Y-axis
-Anticlockwise around Y-axis
-Clockwise around Z-axis
-Anti clockwise around Z-axis
3-2-1 Principle

20. All the 12 d.o.f except the three translational d.o.f
should be fixed in order to locate the work piece in
the fixture. So 9 degrees of freedom of the work
piece need to be fixed.
This is done by the 3-2-1 method as shown below
Rest the work piece on three non collinear points of
the bottom surface (XY) and you will be able to fix
the +Z, CROT-X, ACROT-X,CROT-Y AND ACROT-Y
degrees of freedom.
Now rest the workpiece at two points of side
surface (XZ) and you will be able to fix the +Y and
ACROT-Z degrees of freedom.

21. Bending due to Heat treatment

22. Bending at Tip

23. 
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To increase the number of nailguns that can be
formed in one cycle.
To reduce the time taken to manufacture the
complete quota.
To increase the efficiency of the process.
To reduce the various defects.
Objectives of the project

24. Old Fixture

25. Dimensions
Width:- 24 inch
Hight:-50 inch
Cage hight :- 56inch
Width:- 26inch
Fixture

26. Let me introduce you to cage

27. Cage is most important part for the heat
treatment process.
Cage first inserted in the furnace and then fixture
is inserted in the cage.
Cage

28. To increase the production, a new fixture is designed
in such a way that it can give 10 nailguns.
Design considerations are taken and a new fixture is
designed using the new dimensions.
The arrangement of the fixture is made in such a
way that bending is reduced.
After knowing the detail for cage and fixture it came
to know that we can increase the hight of the fixture
which helped in increasing the quantity of
components.
Modifications

29. 1
presents a
review on
literature of
different
methods
adopted by
many
foundaries to
reduce the
percentage of
Defact
1.mr.
siddalings
wami.s.
hiremath
2.dr.s.r.
dulange
in
casti
ng
defec
ts
and
reject
ion
analy
sis:a
study
in an
indus
try
Qualit
y
impro
veme
nt
techn
iques.
Sep.2015 ijiert
2
A fixture is
designed, built
to hold, support
and locate
every
component to
ensure that
each is drilled
or machined
with accuracy
and
Kiran
Valandi1, M.
Vijaykumar
2, Kishore
Kumar S3
Devel
opm
ent,
Fabri
catio
n and
Analy
sis of
Fixtur
e .
Solid
mode
ling
of
tool:
3-D
mode
ling
April
2014
ijiert

30. Serial
number
Literature
abstract
Author
name
Title modificatio
n
Year of
Publication
Journal
name
3 In
machining
fixtures
minimizing
workpiece
deformatio
n due to
clamping
and other
forces is
essential
to maintain
the
machining
accuracy.
Shailesh S.
Pachbhai &
Laukik P.
Raut
A Review
on design
of fixture Designing
of fixtures
for
industrial
uses.
Feb-March
2014 IJERGS

31. Tentative new Fixture

33. Increase in quantity
More cycles can be undertaken
Defects are reduced
Quality is improved.
Efficiency increases.
New design of fixture
Tentative Result