Question
Download Solution PDFWhich gears can be used in intersecting shafts for power transmission (choose the correct option)
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Helical Gear:
- In a helical gear, the teeth are cut at an angle to the axis of rotation.
- It is used to transmit power between two parallel shafts.
- The end thrust is exerted by the driving and driven gears in the case of helical gears and the thrust may be eliminated by using double helical gears. These gears are called herring-bone gears.
Bevel Gear:
- Bevel gears are used to transmit motion between shafts at various angles to each other.
- The teeth profile may be straight or spiral.
Worm shaft and worm gear:
- The worm shaft has spiral teeth cut on the shaft and worm wheel is a special form of gear teeth cut to mesh with the worm shaft.
- These are widely used for speed reduction purpose.
Rack and pinion
- The rack and pinion can change rotary into linear movement and vice versa.
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