Bevel Gear Sizes

Bevel Gear Sizes

This topic has 3 replies, 3 voices, and was last updated 25 May 2020 at 10:31 by Anonymous.

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24 May 2020 at 20:32 #27397
Brian Oldford
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@brianoldford70365
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24 May 2020 at 20:32 #474609
Brian Oldford
Participant
@brianoldford70365
I understand the terminology reasonably well for gear dimensions DP, Mod, Addendum etc but one thing leaves me puzzled.
To my way of thinking the tooth size and hence the DP/Mod of a tooth on a bevel gear changes as you move along it towards the theoretic conical apex.
So how can various vendors describe such gears as Mod 1 or Mod 2 etc?

Or have I suffered a brain fart and missing something obvious?
24 May 2020 at 20:40 #474618
Martin Connelly
Participant
@martinconnelly55370
According to my HPC catalogue the pitch circle is on the outer face of the gear. All calculations would be based on the widest part of the tooth.

Martin C
25 May 2020 at 10:31 #474736
Anonymous
To expand on the reply from Martin in contrast to ordinary bevel gears parallel depth bevel gears are designed using the tooth parameters at the inner face of the teeth.

Andrew
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