> Gears are a common type of spare part used in various industries...
/Spare/?
The whole thing looks like "AI" mashup.
porise•21m ago
You can. You change the profile shift or general tooth profile to avoid the undercut. And even if you have an undercut it's not the biggest deal. They're manufactured all the time. It's also noteworthy that min 17 teeth is only applicable to gears with a pressure angle of 20 degrees (as well as the no profile shift I mentioned).
MatthiasWandel•5m ago
A downside of profile shift is that you get away from the pitch diameter. At the pitch diameter, there's no friction on the teeth, the further away you get, the more friction.
But any hand drill will have a gear with less than ten teeth cut into the motor's shaft to drive the first gear, and they work just fine.
chrisjj•1h ago
/Spare/?
The whole thing looks like "AI" mashup.