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JML31347

Roller Gear - Worm shaft driven

by JML31347 Apr 16, 2019
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Interesting, It's a fun idea; but there is either going to be a lot of wear on the non-driving side because it is counter rotating, or there has to be quite a bit of play.
It looks like you've limited the turns on the worm to keep the profiles working so I can tell some thought went into this. Nice!

The cones rotate , so friction is kept to a minimum

I get that but consider when the worm is driving the spur upwards. The lower face of the worm is going to turn the bearing counter clockwise.but the upper face of the worm wants the bearing to turn clockwise. If there is enough play, the upper face won't touch and it won't matter. If there were (hypothetically) perfect engagement the cones wouldn't turn at all and would just slide on the two faces of the worm.

For the most part there are only 2.5 cones engaging at a time and they do not touch both sides of the worm. There is enough clearance for slop and miss alignment.
It does not matter which direction it turns.

Nice work! I'm curious as to why you've got 4 sets of bearings in the driven cone rollers? I wonder if you've got the friction low enough that it could be driven in reverse?

Yes it can work in any direction.
That is why the multi bearings in the cone heads are nessasary