View Full Version : Lever ON/OFF Convention ???

Paul Alciatore
11-24-2006, 03:38 PM
So I am designing a gear train for a X or Y movement on a lathe. And I need a means of disconnecting it. So I am planning on a movable gear, similar to the tumbler gears used for reversing. My question is, is there any convention in the WWM (wonderful world of machining) for ON and OFF? I mean should Up be On or Off? Or is it just a matter of chance in every design?

Your Old Dog
11-24-2006, 03:59 PM
I can't answer your question with any knowledge on the subject but can say when I'm faced with that questions it is always Power "up" or Power "down". Otherwise I forget how I did it !!

11-24-2006, 11:42 PM
Aparently not since I have seen several B-port mills and B-port mill clones with switches labeled FWD,OFF,FWD.One FWD is in fact FWD,but not the other and not all the time:D

11-25-2006, 12:38 AM
Put it the way that makes sense to you. For myself, down would be disconnected.

11-25-2006, 07:11 AM
What ever is comfortable for you,You are the one running it.

11-25-2006, 07:36 AM
I would think that up for on - down for off is good.

My colchester lathe has a clutch lever , you pull up for forward, down for off (down all the way for reverse)
I like being able to knock it out of gear by just dropping my hand .