FABRICATION OF PNEUMATIC DRILL JIG
This project work deals with the design and fabrication of pneumatic drill jig. This pneumatic
drill jig shows the reduction in labor time, machining time, etc. this type of jig is used for
mass production for motor cover, bearing cap and other mechanical and automobile
This pneumatic drill jig is provided with pneumatic clamping arrangement. This type of
clamping arrangement seals the setting time, making time, punching time etc. when
compressed air is taken from a convenient medium to provide pope clamping force and good
gripping to the component. As the quantity to produce is large the proposed pneumatic drill
jig fulfills the mass production requirement in the shop. Clamping can be done by releasing
the pressured air using valves.
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The component is placed in between the jig plate and locater which is on the piston rod.
When the valve is opened, the compressed air from the compressor will enter into the
cylinder through a hole at the bottom of the cylinder. The piston inside cylinder is made to
push in the upward direction. When the piston moves the locater clamps the component
rigidly. Now the component is ready for drilling operation.
When the two way valve is close the piston will return to bottom position to release the
clamps. When we close the valve the piston will come in very high force in downward
direction, so these are chances for damage of piston. This can be repeated with the same
procedure as described above.
The use of air cylinder reduces operator effort
Operator effort was reduced considerably and the job made much easier and faster
Air clamping device is quicker in action more constant in clamping proper and more
convenient than hand operated clamps and save human energy
Increases the versatility of machining performed
Reduces waste motions which cause fatigue to worker
Considerable savings in time are possible from the use of air clamps
The average ratio of clamping time for a component between manual operation and air
operation is approximately 4:1
Increases machining accuracy because the work piece is automatically located without any
alignment to the machine tools
Increases the productivity due to increasing the speed, feed and depth of cut. This becomes
possible due to higher clamping rigidity
Decreases expenditure on quality control of the machine parts
This method is used for large production quantities pressures are uniform and are controlled
by operator with minimum fatigue
Need separate compressor.
It can be installed in all machine shops.
DRAWING FABRICATION OF PNEUMATIC DRILL JIG