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Umesh Kumar Meher
Pneumatic Grinding Machine
Pneumatics is a section of technology
that deals with the study and application
of pressurized air/gas to produce
mechanical motion.
Grinding is a process carried out with a
grinding wheel made up of abrasive grains
for removing very fine quantities of material
from the work piece surface.
• Utility grinding machines
• Floor mounted utility grinding machine
• Bench type utility grinding machine
• Bench-type utility drill grinding machine
• Milling and grinding lathe attachment
• Surface grinding machine
The surface grinding machine is used for grinding flat surfaces.
The work piece is supported on a rectangular table which moves
back and forth and reciprocates beneath the grinding wheel.
Reciprocating surface grinding machines generally have
horizontal wheel spindles and mount straight or cylinder-type
grinding abrasive wheels.
Pneumatic Surface Grinding Machine
Pneumatic Surface Grinding Machine
An air compressor is a device
that converts power (usually from
an electric motor, a diesel engine or
a gasoline engine) into kinetic
energy by compressing and
pressurizing air, which, on
command, can be released in quick
bursts.
Specification
A pneumatic motor
or compressed air
engine is a type of
motor which does
mechanical work by
expanding compressed
air.
 The pneumatic motor used in our project is known as a
rotary vane motor, uses air to produce rotational motion to a
shaft.The rotating element is a slotted rotor which is
mounted on a drive shaft. Air is pumped through the motor
input which pushes on the vanes creating the rotational
motion of the central shaft.
 Rotation speeds can vary between 100 and 25,000 rpm
depending on several factors which include the amount of air
pressure at the motor inlet and the diameter of the housing.
Model BVS 130
Weight 0.286/.587 kg
Dia of pneumatic turbine 70.6mm
Dia of rotor 67.6mm
Dia of spindle 7.93mm
Dia of inlet and outlet port 3.9mm
Specifications
 A grinding wheel is an expendable wheel
that is composed of an abrasive compound
used for various grinding (abrasive cutting)
and abrasive machining operations.
Abrasive
Type
Grit Size Grade Structure Bond
A 126 H 5 S
Al2O3 Fine Soft Close Pack Silicate
Grinding Wheel Specification
Grinding wheel Specification
Abrasive material Percentage Work material Colour
Aluminium Oxide
97-99% Al2O3 Hardened steel, HSS White
87-96% Al2O3 Steel, cast iron Pink to brown
Silicon Carbide
96-99% SiC HSS,
cemented carbides
Green
<96% SiC Aluminium , brass, brittle
materials
Black
Cubic Boron Nitrate (CBN) Tool steels, aerospace alloys
Synthetic Diamond Ceramics,
cemented carbides
Pneumatic Surface Grinding Machine
The compressed air from the air compressor passed through the
inlet port of the pneumatic turbine.
 The high pressure and high velocity air then strike the vertical
blades/slots.
 This compressed air cause the blades to rotate in very high
range, ranging from 1500 to 12000 rpm depending upon the supply
of compressed air.
This rotor then cause the whole pneumatic circuit to rotate thus
the spindle and shaft connected to it rotates.
Then the spindle rotation cause the rotation of the grinding wheel
connected to it.
The compressed air once strike to the blades again comes out of
the turbine by an exhaust port that present in the turbine.
Pneumatic Surface Grinding Machine
The grinding/grinding speed can be varied according to our
needs by adjusting the timer.
It is portable
It does not have any Prime mover, like electric motor related
to the unit.
As the air is freely available, we can utilize the air to cut the
metal and hence it is economical.
Simple in construction than mechanical hacksaw and grinder
It is a compact one
Less Maintenance
No lubrication required
Noiseless
Can be rotate in both clockwise and anti-clockwise direction
Only smaller size and soft metal can be cut
It is costlier than the conventional one because of
compressor unit.
Less efficiency when compressed to mechanical device.
Leakage of air affects the working of the unit.
High initial cost
•Rao N P , ManufacturingTechnology, volume-2, Metal Cutting And Machine
Tools, 2nd Edition, Tata McGraw-Hill Publication, New Delhi, 2009
•Mallik Kumar Asok Ghosh Amitabha, Manufacturing Science, 2nd Edition, EWP
Publication, New Delhi, 2010
•http://en.wikipedia.org/wiki/Pneumatic_motor
•Pneumatic engines for power tools (http://www.directindustry.com/cat/motors-
geared-motors-motion-control/pneumatic-motors-D-77.html)
•Engineers Edge. Pneumatic actuator design and operation. Retrieved from
http://www.engineersedge.com/hydraulic/pneumatic_actuator.htm
•Braun, Adolphe: Luftlokomotive in "Photographische Ansichten der
Gotthardbahn", Dornach im Elsass, ca.1875
•http://en.wikipedia.org/wiki/Grinding_wheel
•http://www.smithy.com/machining-handbook/chapter-8/page/3
•http://www.vibco.com/docs/catalogs/silent-pneumatic-turbine-vibrators-
catalog.pdf
•http://www.durhamgeo.com/pdf/Rem-pdf/p32.pdf
•http://www.iontrap.wabash.edu/publications/ajp_80_24_rohrbach_air_cannon.pdf
Pneumatic Surface Grinding Machine

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Pneumatic Surface Grinding Machine

  • 2. Pneumatic Grinding Machine Pneumatics is a section of technology that deals with the study and application of pressurized air/gas to produce mechanical motion. Grinding is a process carried out with a grinding wheel made up of abrasive grains for removing very fine quantities of material from the work piece surface.
  • 3. • Utility grinding machines • Floor mounted utility grinding machine • Bench type utility grinding machine • Bench-type utility drill grinding machine • Milling and grinding lathe attachment • Surface grinding machine
  • 4. The surface grinding machine is used for grinding flat surfaces. The work piece is supported on a rectangular table which moves back and forth and reciprocates beneath the grinding wheel. Reciprocating surface grinding machines generally have horizontal wheel spindles and mount straight or cylinder-type grinding abrasive wheels.
  • 7. An air compressor is a device that converts power (usually from an electric motor, a diesel engine or a gasoline engine) into kinetic energy by compressing and pressurizing air, which, on command, can be released in quick bursts. Specification
  • 8. A pneumatic motor or compressed air engine is a type of motor which does mechanical work by expanding compressed air.
  • 9.  The pneumatic motor used in our project is known as a rotary vane motor, uses air to produce rotational motion to a shaft.The rotating element is a slotted rotor which is mounted on a drive shaft. Air is pumped through the motor input which pushes on the vanes creating the rotational motion of the central shaft.  Rotation speeds can vary between 100 and 25,000 rpm depending on several factors which include the amount of air pressure at the motor inlet and the diameter of the housing. Model BVS 130 Weight 0.286/.587 kg Dia of pneumatic turbine 70.6mm Dia of rotor 67.6mm Dia of spindle 7.93mm Dia of inlet and outlet port 3.9mm Specifications
  • 10.  A grinding wheel is an expendable wheel that is composed of an abrasive compound used for various grinding (abrasive cutting) and abrasive machining operations. Abrasive Type Grit Size Grade Structure Bond A 126 H 5 S Al2O3 Fine Soft Close Pack Silicate Grinding Wheel Specification Grinding wheel Specification
  • 11. Abrasive material Percentage Work material Colour Aluminium Oxide 97-99% Al2O3 Hardened steel, HSS White 87-96% Al2O3 Steel, cast iron Pink to brown Silicon Carbide 96-99% SiC HSS, cemented carbides Green <96% SiC Aluminium , brass, brittle materials Black Cubic Boron Nitrate (CBN) Tool steels, aerospace alloys Synthetic Diamond Ceramics, cemented carbides
  • 13. The compressed air from the air compressor passed through the inlet port of the pneumatic turbine.  The high pressure and high velocity air then strike the vertical blades/slots.  This compressed air cause the blades to rotate in very high range, ranging from 1500 to 12000 rpm depending upon the supply of compressed air. This rotor then cause the whole pneumatic circuit to rotate thus the spindle and shaft connected to it rotates. Then the spindle rotation cause the rotation of the grinding wheel connected to it. The compressed air once strike to the blades again comes out of the turbine by an exhaust port that present in the turbine.
  • 15. The grinding/grinding speed can be varied according to our needs by adjusting the timer. It is portable It does not have any Prime mover, like electric motor related to the unit. As the air is freely available, we can utilize the air to cut the metal and hence it is economical. Simple in construction than mechanical hacksaw and grinder It is a compact one Less Maintenance No lubrication required Noiseless Can be rotate in both clockwise and anti-clockwise direction
  • 16. Only smaller size and soft metal can be cut It is costlier than the conventional one because of compressor unit. Less efficiency when compressed to mechanical device. Leakage of air affects the working of the unit. High initial cost
  • 17. •Rao N P , ManufacturingTechnology, volume-2, Metal Cutting And Machine Tools, 2nd Edition, Tata McGraw-Hill Publication, New Delhi, 2009 •Mallik Kumar Asok Ghosh Amitabha, Manufacturing Science, 2nd Edition, EWP Publication, New Delhi, 2010 •http://en.wikipedia.org/wiki/Pneumatic_motor •Pneumatic engines for power tools (http://www.directindustry.com/cat/motors- geared-motors-motion-control/pneumatic-motors-D-77.html) •Engineers Edge. Pneumatic actuator design and operation. Retrieved from http://www.engineersedge.com/hydraulic/pneumatic_actuator.htm •Braun, Adolphe: Luftlokomotive in "Photographische Ansichten der Gotthardbahn", Dornach im Elsass, ca.1875 •http://en.wikipedia.org/wiki/Grinding_wheel •http://www.smithy.com/machining-handbook/chapter-8/page/3 •http://www.vibco.com/docs/catalogs/silent-pneumatic-turbine-vibrators- catalog.pdf •http://www.durhamgeo.com/pdf/Rem-pdf/p32.pdf •http://www.iontrap.wabash.edu/publications/ajp_80_24_rohrbach_air_cannon.pdf