FLEXIBLE OXY-ACETYLENE
GAS CUTTER
DEPARTMENT OF MECHANICAL ENGINEERING
TOMS COLLEGE OF ENGINEERING FOR STARTUPS
KOTTAYAM, MATTAKARA
Project Guide,
SUMEER S.
Assistant Professor
Dept. of Mechanical Engineering
Project Team,
MATHEW THOMAS
JIBIN GEORGE
JITHIN VARGHESE
CONTENT
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Introduction
Literature survey
Theory
Conventional oxy-acetylene gas cutting
Problem definition
Flexible oxy-acetylene gas cutter
Project scope
Proposed design
Degrees of freedom
Components used
Specification
Conclusion
Reference
INTRODUCTION
• Oxy-fuel welding (commonly called oxyacetylene
welding, oxy welding, or gas welding in the U.S.)
and oxy-fuel cutting are processes that use fuel gases
and oxygen to weld and cut metals, respectively.
LITERATURE SURVEY
Paper
Author
Year
Conclusion
Design of an autonomous Wall
painting robot
Mohammed abdellatif
2012
Automated painting need
for automobile industry
and decrease painting time
Robotic arm wireless controlled
Ashish singh
2013
To control the robot with
an android application
2015
How temperature affect
and study of strength of
test piece
Study and development of inert
oxy acetylene gas welding
S K Gupta ,et.al
Design and manufacturing of
automatic gas profile cutting
Ajay M Patel ,et.al
2015
To reduce the human effort
and making automated
profile cutter
Design and development of
mechanism of robotic arm for
lifting part
K.L Voon
2015
How to lift part with
robotic arm and forces
required
Design and structural analysis
of robotic arm
Gurudu rishank reddy
2016
Making different type of
robotic arms
CONVENTIONAL OXY-FUEL
CUTTING
• In oxy-fuel cutting, a torch is used to heat
metal to its kindling temperature.
• A stream of oxygen is then trained on the
metal, burning it into a metal oxide that flows
out of the kerf as slag.
THEORY
• Pure oxygen, instead of air, is used to increase the flame
temperature to allow localized melting of the workpiece
material (e.g. steel) in a room environment.
– A common propane/air flame burns at about
2,250 K (1,980 °C; 3,590 °F),
– a propane/oxygen flame burns at about 2,526 K
(2,253 °C; 4,087 °F),
– an oxy-hydrogen flame burns at 3,073 K (2,800 °C;
5,072 °F), and
– an acetylene/oxygen flame burns at about 3,773 K
(3,500 °C; 6,332 °F).
TYPES OF FLAMES
PROBLEM DEFINITION
• Suitable for cutting mild steel only.
• High heat input, large heat-affected zone.
• Material warpage when cutting thin materials;
straightening work required.
• Low dimensional accuracy when cutting repeat
cuts due to heat influence.
• Low cutting speed.
• Skilled labour.
FLEXIBLE OXY-ACETYLENE GAS
CUTTER (FOAGC)
• This unique machine uses robotic arm to move the
flame torch for the cutting operation.
• The robotic arm could be controlled using a
Smartphone powered by android operating system.
• The cutting operation of the machine could be
changed to welding operation simply by changing
the tip of the flame torch and changing the
temperature intensity of the flame.
• A continuous track drive system is used and so this
machine could be moved to other places easily.
PROJECT SCOPE
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Flexible, can cut any direction any angle.
More complicated profiles can be cut
No skilled labour required.
More dimensional accuracy.
No Alignment problems.
Increased cutting speed
Problem in carrying the conventional equipment
has been solved.
PROPOSED DESIGN
DEGREES OF FREEDOM
• Axis 1: Let your arm hang down. Raise it in front of you,
turning only at the shoulder.
• Axis 2: Let your arm hang down. Raise it out away from your
body like you’re doing jumping jacks.
• Axis 3: Bend your elbow.
• Axis 4: Wave like the Queen of England by twisting at the
wrist. It’s a twist between the wrist and the elbow.
• Axis 5: Make a fist, then make it nod up and down. Bonus
points if you draw eyes on the first knuckle of your index
finger.
• Axis 6: Imagine holding a big dial in your fingers. Turn the
dial without moving the rest of your hand.
COMPONENTS USED
• Robotic arm
• Continuous track wheel
• Arduino robot arm control chip
• Displacement sensor
SPECIFICATIONS
Type of Gas
Max. Inlet
Pressure
(Bar)
Max. Outlet
Pressure
(Bar)
Max. Flow
(LPM)
Inlet
Connection
Outlet
Connection
Oxygen
230
10
1000
5/8” BSP
R/H (Male)
3/8” BSP
R/H (Male)
Acetylene
20
1.5
250
5/8” BSP
R/H (Male)
3/8” BSP
R/H (Male)
Nozzle Size
MS Plate
Thickness (mm)
1/32"
6
3/64"
12
1/16"
50, 75, 100
1/8"
300
REGULATORS
(i) Double Stage Regulators conforming to IS 6901‐2009 with ISI
Certification mark
(ii) For use in indoor, as well as, outdoor conditions
(iii) Stainless steel diaphragm in first stage to absorb shock of inlet
pressure and flexible rubber diaphragm in second stage for fine gas
control
(iv) Shall have two pressure gauges – one to indicate the Inlet Pressure
and the other to indicate the Outlet Pressure
(v) Shall have Pressure Adjusting Knob for adjusting working pressure
(vi) Second stage plenum chamber volume shall be at least five times
than first stage for stable flow characteristics
(vii) Forged brass body and cap spring
(viii) Valve shall be made of fire retardant material
(ix) Shall have safety valve and inlet filter
CUTTING BLOWPIPE
(i) Injector type hand cutting blowpipe for use with
dissolved Acetylene Cylinders
(ii) Conform to IS 7653‐1975 with ISI Certification mark
(iii) Body and head made of forged brass
(iv) Swaged nozzles to ensure parallel beam of heating
flame
(v) Shall consist of Blowpipe‐1 no., Cutting Nozzle
(3/64")‐1 no., Nut & Nipple for hose connection of both
Oxygen and Acetylene gas
HOSES WITH CONNECTORS
Two hoses, for Oxygen and Acetylene gas, each of 10m
length, factory fitted with necessary nut and nipples at
both ends with any other necessary adaptors required for
gas connection of Blow pipe (Sl. No. 1) or Cutting
Machine (Sl. No. 5) with regulator through the flashback
arrestors shall be supplied.
SMATPHONE INTERFACE
CONCLUSION
 The flexible oxy-acetylene gas cutter would be so useful
in large industries.
 The FOAGC enable a person to cut a metal sheet with
atmost accuracy with less effort.
 Since it could be operated using a smartphone it no
longer requires highly skilled labour.
REFERENCES
[1] Mohamed Abdellatif, “Design of an Autonomous Wall Painting Robot”,
Mechatronics and Robotics Dept. Egypt-Japan University of Science and
Technology, Alexandria, Egypt, 2012
[2] Ashish Singh, Mrs.M.V. Patil, “Robotic Arm Wirelessly Controlled” IJSR
Android Application, 2013
[3] S K Gupta, Md.Ehsan Asgar, “Study and Development of Inert OxyAcetylene Gas Welding, IJETT journal, Aug 2014
[4] Ajay M Patel,Dhaval Shah,Mudit Kothari, “Design and Manufacturing of
Automated Gas profile Cutting Machine using PLC” ,IJSRD vol.3, 2015
[5] A.N.W.QI, K.L.VOON, M.A.ISMAIL, N.MUSTAFFA, M.H.ISMAIL “Design
and Development of a Mechanism of Robotic Arm for Lifting Part1” Faculty of
Mechanical Engineering, University Malaysia Pahang, 2015
[6] Gurudu Rishank Reddy, Venkata Krishna Prashanth Eranki, “Design and
Structural Analysis of a Robotic Arm”, 2016
THANK YOU