Identify different types of teeth which are across a gear - one is known as a spur or 'straight cut' and the other type has a helix, this is known as a helical gear. Involute profile Helix profile Root Q.5 Why are both types of gears used for different applications?

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Task 4- Gear Engagement and Tooth Design
Identify different types of teeth which are across a gear - one is known as a spur or 'straight cut'
and the other type has a helix, this is known as a helical gear.
Involute
profile
Helix
profile
Root
Q.5 Why are both types of gears used for different applications?
As well as having different gear teeth, the gear engagement mechanisms can also function in a
different way to suit applications.
Dog-engagement - uses driving 'dogs' or blocks to transmit the drive but requires a positive gear
selection which can be harsh if it is not selected correctly
Synchromesh – uses a synchroniser mechanism to match gear and shaft speeds before drive
teeth are engaged.
Sketch and label a sectioned view of both gear engagement mechanisms
Dog-engagement
Synchromesh
Transcribed Image Text:Task 4- Gear Engagement and Tooth Design Identify different types of teeth which are across a gear - one is known as a spur or 'straight cut' and the other type has a helix, this is known as a helical gear. Involute profile Helix profile Root Q.5 Why are both types of gears used for different applications? As well as having different gear teeth, the gear engagement mechanisms can also function in a different way to suit applications. Dog-engagement - uses driving 'dogs' or blocks to transmit the drive but requires a positive gear selection which can be harsh if it is not selected correctly Synchromesh – uses a synchroniser mechanism to match gear and shaft speeds before drive teeth are engaged. Sketch and label a sectioned view of both gear engagement mechanisms Dog-engagement Synchromesh
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