Miner project roller bender

1. CERTIFICATE
We hereby certify that the work which is being presented in the B.Tech. Project-I Report entitled
“Roller Bender” in partial fulfillment of the requirements for the award of the degree of Bachelor of
Mechanical Engineering and submitted to the Department of Mechanical Engineering, Jawaharlal
Nehru Government Engineering College Sundarnagar, is an authentic record of our own work carried
out during the period from August 2018 to December 2018 (7th Semester) under the supervision of
Er. Ajay Kumar, Assistant Professor, Department of Mechanical Engineering.
The matter presented in this Project Report has not been submitted by us for the award of any
other degree elsewhere.
Signature of Students
Pankaj Singh (10BTD5020295) Parvinder Singh (1612614405)
Iqwal Singh (10BTD5020286) Rakesh Kumar (1612614407)
Rajan Jaswal (10BTD5020300) Rishi Kant Thakur (10BTD5020305)
Ram Bahadur (10BTD5020303) Harshit Chandel (10BTD5020285)
Rishabh Sharma (10BTD5020304)
This is to certify that the above statement made by the students(s) is correct to the best of my
knowledge.
Er. Ajay Kumar Prof. Rajeev Khanduja
(Supervisor) (Head of Department)
The B.Tech Viva-Voce examination has been held on ____________________.
Sign. of Supervisor Head of Department Sign. of External Examiner

2. CONTENTS
CERTIFICATE
ACKNOWLEDGEMENT
ABSTRACT
LIST OF FIGURES
LIST OF TABLES
Chapter-1 INTRODUCTION
1.1 Need and Significance of Proposed Project
1.2 Objective of The Project
1.3 Expected Outcomes
Chapter-2 LITERATURE REVIEW
Chapter-3 CONSTRUCTION AND SPECIFICATION
Chapter-4 CONCLUSION AND SCOPE OF FUTURE WORK
REFERENCES

4. ACKNOWLEDGEMENT
This acknowledgement is a humble attempt to earnestly thank all those who were
directly or indirectly involved in preparation of this synopsis report. In particular we are
thankful to our guide Er.Ajay kumar who guided us in our project work. We are thankful to him
for taking active part in the preparation of our synopsis report. It was impossible to present this
report without his co-operation and suggestion. Last but not least we would like to express
out deep sense of gratitude to all the faculty members of Mechanical Engineering

5. ABSTRACT
Roller Bender is used to bend a metal sheet, plate and pipe. The aim of this project is to develop
a portable metal bender. It is used to bend sheets into curve and the other curvature shapes. The
size of bender is very small as compare to other machines. And it is convenient for portable
work. It is fully made by MS. And it is the easy to be carry and use at any time and any place. It
eases human effort and no required skill workers to operate the machine. We are developing
manually operated metal roller bender with use of metal shaft, hydraulic bottle jack, pedestal
bearing and support (frame). This machine works on simple kinematic system instead of
complicated design. This machine can bend up-to 8 mm thick sheet and up-to 2cm diameter of
pipe. Due to its light weight and it is portable so it can be used by small workshop, fabrication
shop, small scale industry etc. Roller bender is a common machine in machine shop that is used
to bend a metal. There is no proper small scale roller bender for bending a pipe. A Metal Roller
bender uses roller to bend metal. There are 3 roller used in bending machine. The common
product of metal roller bender are pipe (square and circular) bending if separate attachment of
die is provided, sheet bending. During the roller bending process the sheet or plate or pipe is
passed through consecutive rollers that gradually apply pressure on pipe. Because of this
pressure the change in radius of pipe or sheet occurs.

6. LIST OF FIGURE
Fig. No Title ofFigure. Page No.
1.1 Rollerbender 2
1.2 Blockdiagramof roller
bender
4
3.1 Base frame 7
3.2 Horizontal frame 8
3.3 Roller 9
3.4 Pedestal bearing 10
3.5 Hydraulicjack 11
3.6 Nutand Bolt 12
3.7 Cut piecesof girder 14
3.8 Cuttingof square cross-
section
14
3.9 Frames 15
3.10 Drilling 16

7. LIST OF TABLES
CHAPTER-1
INTRODUCTION
Table No. Title ofTable. Page No.
3.1 Frame 7
3.2 Horizontal frame 8
3.3 Roller 9
3.4 Pedestal Bearing 10
3.5 Hydraulicjack 11
3.6 Nutand Bolt 12

8. Due to increasing globalization, it is very much essential for the manufacturer to produce a
goods having highest reliability. Metal Bending and Rolling is generally used in fabrication as an
alternative method for casting or forging operations. Since it is related to human being hence it is
necessary to design the joint with prior attention to safely of its user. Generally Bending is a
process that produces U-shape, V-shape, or channel shapes in ductile materials, most commonly
in sheet metal as per requirement on different types of bending machines.
As we have studied bending is also called as flexure which characterises the behaviour of
structural element when subjected to external load applied perpendicularly to a longitudinal axis
of the element. A beam is an element whose length thickness and width is smaller than the
length. A shell is a geometric structure in which width and length are of same magnitude and the
thickness of this geometric structure is smaller. There are two different machines available in
market for bending of sheet and bending of pipe. There is no single machine available which
bends sheet as well as pipe in a single unit. Roller bending process can be used to deform a sheet
or plate. Cylindrical shells are the basic components used for the various engineering
applications like boiler chambers, cylindrical tanks, heat exchanger shells, pressure vessels, etc.
The process can be performed using many materials such as carbon and alloy steels, aluminium
alloys and titanium alloys. Rolling machines with both three rollers are used to produce of
cylinders with various curvatures. The rolling process is generally performed by a three roll
roller bender often called as pyramid type, because of these types of arrangement of the three
rollers. The process mainly consist 3 steps:
1) Positioning of the sheet or pipe.
2) Lowering of central roller.
3) Repeating feed of sheet or pipe.
In first step, a flat blank sheet is fed into the machine by two rotating side rollers until the sheet
is properly positioned. In the 2nd step, centre roller is displaced downward causes bending of the
sheet. In the final step, two side rollers rotate again, so that the sheet is bending continuously the
rolling process always starts with the crucial operation of pre-bending both ends of sheet. The
success of 3 roller bending process is depends on the experience and skill of the operator.
Rollerfor Bending of pipe

9. To give the required shape and size, roller is used. Primary function of the roller is to achieve
angular shape to the pipe. This is done through screw which apply pressure on roller and also this
roller achieved rolling action by using Bearings.
Fig no 1.1
Diagram of Roller Bender

10. 1.1 Needand Significance ofRoller bender
The reason to design a roller bender for pipe bending is because there is no proper roller bender
to bend a metal pipe for small scale. The bending machines found in the market come from
variety of types. There are roller bender such as press brake bending machine, roll roller bender
and a folding machine.
Moreover, the design for the roller bender for pipe bending is to bend a metal pipe. It produces
sheet metal bending with desire degree of bending except 90°. Other reason regarding to the
roller bender design, the roller bender in the market come with big size and is expensive. The
existing roller bender in the market is created for huge capacity for bending a metal pipe. With
the capacity of roller bender that exists in the market, the existing roller bender is not fulfilling
the requirement of the usage. The requirement of operation of roller bender is simple. Thus it is
not suitable to purchase existing roller bender to be used for simple roller bending operation.
Also, the machine is heavy and use up a lot of space. In addition, the problem will arise when to
move and put the roller bender due to heavy and space.
Functions
1. To bend a pipe having thickness up to 5 mm in required angular shape.
2. To provide curvature shape to pipe.
3. Machine is convenient for portable work.
4. The machine is power operated to achieve maximum accuracy in less time.
Requirements
1. Roller should be very accurate and easy to handle.
2. The effort required to bend pipe should be minimal.
3. The rolling attachment should also provide directional stability. This implies that the pipe
should have a tendency to move too & fro.
1.2 Objective ofRollerBender
 To bend metal sheet and pipe in one system.
 To operate the system hydraulically.
 To provide curvature shape to pipe.
 Machine is convenient for portable work.
 To ease the operation in small scale industries.

11. 1.3 ExpectedOutcomes
The Roller Bender will be able to bend different types of pipe cross-sections like rectangular,
square, circular, angular etc. with the minimum efforts.
It will be cost effective as compared to the bender available in the market.
It is simple in design and hence require less floor space.
Fig no 1.2
BLOCK DIAGRAM OF ROLLER BENDER
CHAPTER-2

12. LITERATURE REVIEW
3.1 INTRODUCTION
This literature is about the work of designing a roller bender to bend a pipe. A bending is
a process of giving curvature to a metal. The metal can be a sheet metal, tubes, square hollow,
rod, and iron angle. This type of metal has its own thickness. The roller bender designer will take
into consideration a number of factors including type of metal, type of the roller bender, power
driven or manual and the size of the bending machine.
P. S. Thakare et al, (2012)Proposed a model that, The paper dealt with manufacturing of
pipes which use power operated sheet roller bender and manually operated sheet bending
machine. It also includes limitations of manually operated bending machine. From the results of
the paper the productivity of power operated roller bender is higher paper deals.
P.G. Mehar et al, (2012) In his M. Tech Thesis studied the manually operated and power
operated sheet bending machine. Experimentations were conducted on sheet in order to measure
actual no. of passes, time required to complete bending process etc. Also, productivity of sheet
bending process is analyzed in depth. Design of various components of power operated sheet
considering various theories of failure in elastic region and values for bending force, power
required, spring back radius etc. for different diameters, thicknesses and width of sheet metal
has been determined
V. Senthil Raja etal, (2014)Author told in recent year’s pipe roller bender was used in both
industry and domestic purpose for bending the pipe under the required angles and dimensions.
Sometimes Heat treatment is used for pipe bending but the heat treatment technique is not safe
and have problems are produced in the pipes, such as wrinkling, curve forming, reduced
thickness, whole forming, reduced strength, easy breakable. In the hydraulic pipe roller bender
having good advantage compared to heat treatment method.
H. A. Hussainetal, (2014)Designed a machine which was a bicycle integrated pipe bending
mechanism was designed and developed. The applications of bent pipes are in frames, barricades,
handle of bicycle. Most of industries uses bent pipes as air conditioning, boiler, power generation,
ship building, furniture, railroad, automotive, off-road and farm equipment, aircraft etc. Due to
adequate human power in countries like India, the human powered machine will result in
improvement of the economy and employment of nation. In Asian countries people are facing
electricity cut-off during most of the days so such system plays an important role in rural areas.

13. Mohan Krishna S. A. et al, (2014) Proposed model that, Hydraulic equipment has wide
use in various automobile fields. These hydraulic instruments are used for lowering and raising
chair in Barber shops and in dental clinics. Hydraulic roller the suitable equipment to bend pipes,
rods and bars. The pipe or rod to be bending is kept between the rollers. With use of hydraulic
jack we implement force on the pipe and bend it to the required angle depending on the dies used.
Hydraulic roller bender is less expensive, flexible and portable compared to those which are
discussed earlier. Hence it is better to replace current standard machines by hydraulic pipe
bending machine.
MaheshGadekaretal, (2015)Proposed a report that , Metal forming is a process in which
the desired shape and size are obtained through plastic deformation of a material without any loss
of material. Bending is a metal forming process in which straight length is transformed into a
curved length. Roller forming process is a continuous bending operation in which a long strip of
metal is passed through typical roller adjustments, until the desired curvature shape is obtained.
The bending changes according to material and according to the loading condition and thickness
of sheet.
Prashant P. Khandare et al, (2016) The main aim of this paper was to develop a pipe
roller bender which was useful to bend a pipe in workshop. This project was to design and
construct a portable pipe bending machine. This machine was used to bend steel pipes into curve
and the other curvature shapes. The size of machine was very convenient for portable work. It
was fully made by steel. Moreover it was easy to be carry and use at any time and any place. It
decreased human effort and required low skill labours for operating the machine. In this paper
they designed manually operated pipe roller bender with use of gears, motors, pulley, and frame.

14. CHAPTER-3
CONSTRUCTION AND SPECIFICATION
3.1 SELECTION AND SPECIFICATION OF MATERIAL
1 Frame:
A) Base Frame:
The home girder of material of mild steel are selected for the frame. The pieces are cut into
required size by cutting machine. The end of the pipes cut into 45 degree (angle) to form
rectangular frame. After cutting, the end of the girder is grinded so that it became smooth and
convenient for welding. The girder are welded together to form a required basic frame.
Fig no 3.1
BASE FRAME
Parameters of frame
Parameters Values
Length 2ft
Width 2ft
Height 1.5ft
Table no 3.1

15. b) Horizontal Frame:
Horizontal frame is the second frame after the base frame. It is rest on base frame and girders
are cut at 45 deg. on the ends in order to weld all the girders properly. It consist of four pedestal
bearings along with two rollers. It will only rest on base frame and remains stationary during
whole bending process.
Fig no 3.2
HORIZONTAL FRAME
Parameter of Horizontal Frame
Parameters Values
Length 2ft
Width 9inch
Height 9inch
Table no 3.2

16. c) Vertical Frame:
It is the third frame which is vertical. In this there is only one pedestal bearing holding the
one roller. It will be allowed to move in the vertical direction and guided by the angles in the
vertical direction. Motion is given to it with help of hydraulic jack.
2 Roller
In this project the roller is used to bend a pipe in angular shape. There are 3 rollers are used to
bend a pipe in curvature shape. Roller is a cylinder that rotates about a central axis and is used
in various machines and devices to move, flatten or spread something. A roller always consist a
bearing.
Fig no. 3.3
Parameters of Rollers
Parameters Values
Diameter 30mm
Material Mild Steel
Table no 3.3

17. 3 Pedestal bearing:
Pedestal bearing are used to give easy and convenient motion to roller by using shafts which is
attach to roller. It is also known as pillow block bearing.
Fig no 3.4
Pedestal bearing
Parameters of Pedestal Bearing
Parameters Values
Internal dia. 30mm
External dia. 84mm
Table no 3.4

18. 4 Hydraulic jack:
A jack, screw jack or jackscrew is a mechanical device used as a lifting device to lift heavy
loads or to apply great forces. A mechanical jack employs a screw thread for lifting heavy
equipment. The jack used in this project is Hydraulic Jack which lift the loads with help of
the hydraulic fluid. It reduces efforts required to lift the load.
Fig no 3.5
HYDRAULIC JACK
Parameters of Hydraulic Jack
Parameters Values
Load Capacity 3tonn
Table no 3.5
5 Hand wheel:

19. It is nothing but a rotary wheel of round pipe to give rolling action to rollers manually.
When we rotate the wheel, a torque is applied on it to pass the sheet and pipes under it. This
hand wheel is attached with one the 3 rollers and used to rotate roller manually. It is larger in
size in order to reduce the efforts to rotate it.
6 Angles:
Angles are used to guide the outermost vertical frame in the vertical direction for the motion.
It will avoid any kind of deviation of vertical frame from its path. Angles are welded and
bolted with the horizontal frame.
7 Nut and Bolt:
Nut and Bolt are mainly used to attach pedestal bearing with the frames. Angles are also
bolted with frames which guide the vertical frame.
Fig no 3.6
NUT AND BOLT
Parameters of nut and bolt
Parameters Values
Diameter of bolt 12mm
Table no 3.6
FABRICATION

20. Fabrication of Roller Bender is carried out in the different steps which are mentioned below:

I. Cutting of basic frame (girder) according to required dimension with the help of cutter or
gas welding.
II. Grinding of the edges of the girder.
III. Drilling of holes in the basic frame for the movement of bearing.
IV. Welding of the girders according to design (arc welding).
V. Then fixing bearing in the frame with help of nut & bolt.
VI. Then passing silver steel rods from bearing to check the alignment of the bearing.
VII. Making arrangement for jack in base of girder on moveable side to lift the edge for
bending purpose.
VIII. Coloring of the project.
OPERATIONSPERFORMED IN THE PROJECT:
TO GATHER REQUIRED MATERIAL
GIRDER/BEAM BEARINGS HYDRAULIC JACK
FRAMES
ASSEMBLY OF PARTS BY
WELDING AND NUT BOLT
OPERATING THE
ROLLER BENDER
RESULT/CONCLUSION

21. CUTTING
In this project we have performed cutting operation on the girders. First of all the girders are cut
with help of abrasive cutter and dimensions varies for every frame. For the base frame
dimensions of girder is
CUT PECICES OF GIRDER
Fig no. 3.7
Fig no. 3.8
ARC WELDING
After cutting all girders next operation is welding operation.

22. Arc welding is a process that is used to join metal to metal by using electricity to create enough
heat to melt metal, and the melted metals when cool result in a binding of the metals. It is a type
of welding that uses a welding power supply to create an electric arc between an electrode and
the base material to melt the metals at the welding point. We can use either direct (DC) or
alternating (AC) current, and consumable or non-consumable electrodes. The welding region is
usually protected by some type of shielding gas, vapour or slag.
In this we have welded together all the cut pieces of girder with arc welding. This process leads
to the formation of 3 frames i.e. 1) base frame 2) horizontal frame 3) vertical frame.
BASE FRAME
HORIZONTAL FRAME Fig no 3.9
DRILLING

23. Drilling is a cutting process that uses a drill bit to cut a hole of circular cross-section in solid
materials. The drill bit is usually a rotary cutting tool, often multi-point. The bit is pressed
against the work-piece, cutting off chips from the hole as it is drilled.
A drill is a tool fitted with cutting tool attachment or driving tool attachment, usually a drill bit or
driver bit, used for boring holes in various materials or fastening various materials together.
Drilling operation is used to drill holes in the girders of horizontal and vertical frame. Holes are
drilled to fasten nut and bolt in order to attach pedestal bearing with both the frames. Drilling is
performed on the vertical column machine.
Drilling
Fig no 3.10
CHAPTER-4

24. CONCLUSION AND SCOPE OF FUTURE WORK
4.1 Conclusion
Such type of roller bender more important for small scale work as well as industrial work in
less cost and more precision and accuracy of different type of pipe bending. The machine
capacity can be increased according to the need. Manual bending tends to minimize wrinkles
and can reduce springbuck. By its design the defects can be easily overcome. Simpler design not
only reduces the defects but also contributes to fluid pressure test during bending. It should be
noted the tendency to wrinkle and the cross section of tube deformation are reduced. Thus, this
approach can be used for bending a thin walled tube over a small radius of the die, which can be
achieved with a conventional method of bending the tube. In this paper, the problem of bending
and axial stretching the internal pressure is investigated using the machine coordinate system
(CMM) measurement. The objective of the study is to develop a tool that accurately predicts the
change of the wall thickness and the cross-section of the tube distortion under different loading
conditions.
4.2 SCOPE FOR FUTURE WORK
The scopes of the study are encompasses investigation of the difficulties in portable metal pipe
bending machine. The investigation is starting with stating with the problem statements. The idea
of designing a bending machine can be seen clearly through the problem statements, which is a
solution of designing a bending machine can be generated to encounter those problems. From
this investigation, a literature review can be conducted. In the literature review, it will discuss
about the reason to design a bending machine for pipe bending, the comparison of existing
bending machine, classification of bending machine, working principle of bending machine, etc.
REFRENCES

25. [1] P. S. Thakare, P. G. Mehar, Dr. A. V. Vanalkar and Dr. C. C. Handa, “Productivity Analysis
of Manually Operated And Power Operated Sheet Bending Machine: A Comparative Study”,
International Journal of Engineering Research and Applications (IJERA), ISSN: 2248-9622, Vol.
2, Issue 2, Mar-Apr 2012, PP.111-114
[2] P. G. Mehar, P. S. Thakare, Dr. A, V, Vanalkar, Dr. C. C. Handa, “Productivity Analysis of
Manually Operated and Power Operated Sheet Bending Machine: A Comparative Study”,
International Journal of Engineering Research and Applications, Vol. 2, Issue 2, Mar-Apr 2012,
pp.111-114.
[3] V. Senthil Raja, R.Maguteeswaran, C. Karthik, S.Rajarajan and D. Shanmuga Vadivel, “A
New Model in Design and Manufacturing of Mobile Hydraulic Pipe Roller benderin Industry”,
International Journal of Engineering Research & Technology (IJERT), ISSN: 2278-0181, Vol. 3
Issue 1, January – 2014 PP 2706-2713
[4] H. A. Hussain, M. Sohail Pervez, Md. Naushad Alam and Atul. P. Ganorkar, “Design and
Development of Bicycle Integrated Pipe Bending Machine”, IOSR Journal of Mechanical and Civil
Engineering (IOSR-JMCE), e-ISSN: 2278-1684, p-ISSN: 2320-334X, 2014, PP 24-28.
[5] Mohan Krishna S. A., “Experimental Design and Fabrication of a Portable Hydraulic Pipe
Bending Machine”, International Journal of Development Research, ISSN: 2230-9926, Vol. 4,
Issue, 12, pp. 2681-2684, December, 2014, PP 2681-2684
[6] Mahesh Gadekar and Mr. Amol, “Design & Development of Three Roller Sheet Bending
Machine”, International Journal on Recent and Innovation Trends in Computing and
Communication, ISSN: 2321-8169, Volume: 3, Issue: 8, August 2015, PP 5132 – 5135.
[7] Prashant P. Khandare, Dhiral N. Patel, Mayur K. Aher, Ravi S. Parbat and Prof. Swapnil S.
Patil, “Study of Portable 3 Roller Pipe Bending Machine”, International Conference on Emerging
Trends in Engineering and Management Research, ISBN 978-81- 932074-7-5, 23 March 2016,
624-630.