Question
Download Solution PDFDouble helical gears are also known as:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Double helical gears :
- Double helical gears are also known as Herringbone gears.
- It is a pair of helical gear stick together in which one having a left-hand helix and the other having a right-hand helix. The end thrust is eliminated by herringbone gears.
- It is mainly used in power transmission.
Additional Information
Spiral gear:
- It is used for connecting two shafts that are neither parallel nor intersecting.
- The motion between the shaft is rotation and partial sliding. The application of spiral gear is in vehicle differential.
Helical gear :
- It is used to connect parallel shafts. In this, the teeth are curved at an angle known as the helix angle.
- Two mating gears must have the same helix angle but have teeth of opposite hands.
- It can be used at higher velocity as compared to spur gear and also have a higher load-carrying capacity. Applications of a helical gear are the gearbox of vehicles.
Bevel gears :
- It is used for connecting intersecting shafts.
- The motion between two intersecting shafts is rolling.
- Mitre gear is the same size and connecting two shafts at right angle to each other.
Last updated on May 28, 2025
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