Gears in Assembly

jože_marinko

Made some gears in Part Studio. Import gears in Assembly Tab and connect them with Revolute mates. Gears are different, so I must rotate them to put teeth together. OK. Then take a Gear mate, specify gear ratio - and gears turned to position before rotating.
???

NeilCooke

When you add a relation, the mates "reset" - i.e. they go back to their original alignment with the mate connectors that were used. If you want to rotate a gear and modify it's "reset" position, edit the mate connector (located under the revolute mate) and add a Rotation about Z. 

raj_Onshape

https://cad.onshape.com/help/#materelation-gear.htm?Highlight=gear

viru

jože_marinko , Kindly refer below link document which will be helpful to you in this case.
https://cad.onshape.com/documents/f108071e466148238daa974c/w/82aa5317108940cd84cc154d/e/23433c160bd04d04a9ef1205

jože_marinko

Sorry, I think that you do not understand my question. Here is a link to my Public Project Ravigneaux Gear Set
https://cad.onshape.com/documents/dd2be5cec85843ec81cc1262/w/360b50092f734ca88ee761d1/e/3a00254c2ff1453597f8222a
Try to connect Small Sun and Short Planet 1 with Gear mate (ratio 2) and you will see that this two gears will rotate !!!??? The teeth are NOT touching correctly. What to do?

adamohern

I'm able to make it work for the Small Sun and any one of the Short Planet mates, but if I include a gear mate for more than one, suddenly it breaks. Seems like a bug.

NeilCooke

When you add a relation, the mates "reset" - i.e. they go back to their original alignment with the mate connectors that were used. If you want to rotate a gear and modify it's "reset" position, edit the mate connector (located under the revolute mate) and add a Rotation about Z. 

adamohern

Good info, but not what I was seeing. Can you make his assembly work? I couldn't.

NeilCooke

I haven't tried it - will do later and report back.

NeilCooke

Works fine once all the gear relations are on - if you fix the Planet Carrier while adding relations you can see it working as expected. The last thing to do is add a gear relation between the small sun and the planet carrier of ratio 3 and you're all set - very nice btw.