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Tooth interference in an external involute spur gear pair can be reduced by
- a)decreasing center distance between gear pair
- b)decreasing module
- c)decreasing pressure angle
- d)increasing number of gear teeth
Correct answer is option 'D'. Can you explain this answer?
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Tooth interference in an external involute spur gear pair can be reduc...
Increasing number of gear teeth:
Increasing the number of gear teeth in an external involute spur gear pair can help reduce tooth interference. This is because having more teeth distributes the load over a larger area, reducing the likelihood of interference between teeth.
Explanation:
- In a gear pair, the number of teeth on each gear affects the contact ratio, which is the ratio of the arc of action to the circular pitch. A higher contact ratio indicates smoother operation and less likelihood of tooth interference.
- By increasing the number of gear teeth, the contact ratio is increased, which helps in reducing tooth interference.
- Additionally, having more teeth also allows for smaller individual tooth profiles, which can help in reducing the chances of interference between adjacent teeth.
Other options:
- Decreasing center distance between gear pair: Decreasing the center distance between the gear pair can help in reducing backlash and increasing the meshing stiffness, but it may not directly address the issue of tooth interference.
- Decreasing module: Decreasing the module results in smaller gear teeth, which may increase the chances of tooth interference rather than reducing it.
- Decreasing pressure angle: The pressure angle affects the tooth profile and strength of the gears but may not have a direct impact on reducing tooth interference.
Increasing the number of gear teeth in an external involute spur gear pair can help reduce tooth interference. This is because having more teeth distributes the load over a larger area, reducing the likelihood of interference between teeth.
Explanation:
- In a gear pair, the number of teeth on each gear affects the contact ratio, which is the ratio of the arc of action to the circular pitch. A higher contact ratio indicates smoother operation and less likelihood of tooth interference.
- By increasing the number of gear teeth, the contact ratio is increased, which helps in reducing tooth interference.
- Additionally, having more teeth also allows for smaller individual tooth profiles, which can help in reducing the chances of interference between adjacent teeth.
Other options:
- Decreasing center distance between gear pair: Decreasing the center distance between the gear pair can help in reducing backlash and increasing the meshing stiffness, but it may not directly address the issue of tooth interference.
- Decreasing module: Decreasing the module results in smaller gear teeth, which may increase the chances of tooth interference rather than reducing it.
- Decreasing pressure angle: The pressure angle affects the tooth profile and strength of the gears but may not have a direct impact on reducing tooth interference.
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Tooth interference in an external involute spur gear pair can be reduced bya)decreasing center distance between gear pairb)decreasing modulec)decreasing pressure angled)increasing number of gear teethCorrect answer is option 'D'. Can you explain this answer?
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