Download - syringe actuated mechanical arm
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INTRODUCTION APPLICATION PARTS HYDRAULIC ACTUATION PRESSURE IN THE SYRINGE TYPE OF ROBOT ARM SAFETY PRECAUTION CONCLUSION FUTURE SCOPE REFRENCE
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A mechanical syringe actuated arm which
is hydraulically operated and controlled
by syringes filled with some fluid. It
consists of various parts connected to
each other in a pre-designed manner
which are guided in a constrained way to
obtain required output.
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These arms are used in assembly lines of mega factories to assemble various parts of a product and also to paint vehicles. They are also used in earth movers to pick up heavy weight and keep them where required. Same principle is being used in JCB’s, automobile lifters, etc.
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In the mechanism, each part has been
provided with certain degree of freedom to
move in a constrained way to guide other parts
and also to pick up small weight items and to place
them wherever required. The complete mechanism
consists of a fixed vertical link. To its free end is
connected or better to say hinged, another
horizontal link which is free to oscillate about that
hinge in an up-down way of motion.
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To this link is connected a slotted type mechanism
which consists of a slotted box which itself can
oscillate about its hinge and in it is a sliding link which
can come out of the slot to have the slider like motion.
To this slider is connected a surface, underneath which
are attached 4 spoons acting as arm to pick up the
items. The entire mechanism is fixed on a rack and
pinion type mechanism to allow degree of freedom of
the mechanism as a whole to rotate by 130degrees.
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All the movements are
controlled hydraulically by
syringes attached to each one.
The hydraulic supply acts like
the arm’s heart and muscles. It
provides the energy for pushing,
pulling, turning and lifting.
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When pressing on the syringe system, be sure to press only the
input plunger with your thumb and hold the output syringe with
your other hand to prevent the syringe from separation
Do not use syringe as a “squirt gun”.
Wear safety glasses.
Follow all normal laboratory rules.
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The prepared mechanism has been successfully constrained and executed to carry out the required work of picking up the weight of objects like table tennis balls and to put them into glasses placed at different location.
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If more time and more efforts would have been put into the model, more complexities could have been brought out. Moreover instead of manual operation of syringes could have been replaced by pre-defined computer programs or merely by pressing the switch operated. Further, more varieties and more flexibility to add or replace any part according to requirements can be done to improve its use and increase field of usage and to make it more universal or flexible.
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http://www.instructables.com/id/Hydraulic-robot-made-of-cardboard-and-scotch-duct-/
http://www.youtube.com/watch?v=6xljw4yoe9A
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