what is the significance of pressure angle in spur gear?
What is meant by self locking in worm and worm gear?
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Answer Posted / sunil
Pressure angle is the angle between tangent of pitch line
normal to that pitch line. if pressure angle will be less
then failure of gear occurs.
Self locking means meshing of gear after same time of
interval that is contcat ration of each gear will be after
same time of period
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