6 axle ?

[Clue144]

ok this is a quik image i have made

those thick black lines are round tubes to spin ... my 6 axle
and i whant to spin them one at the time with 2 dc motor if its possible.

if motor 1 spins right and motor 2 spins left then the first axle will rotate.

if motor 1 spins left and motor 2 spins right then the second axle will rotate.

if motor 1 is stoped and motor 2 spins right then the third axle will rotate.

if motor 1 is stoped and motor 2 spins left then the fourth axle will rotate.

if motor 1 spins left and motor 2 is stoped then the fifth axle will rotate.

if motor 1 spins right and motor 2 is stoped then the sixth axle will rotate.


Ok i hope someone understand this, this would work if i know how to build it, I have a couple of gears but its seems impossible.

Can anyone help me, show me or explain how exactly i can do or give me another teory to make this ?

 

[MikeHalloran]

DC motors are cheap relative to the gears you would need to get anywhere near what you want.

Buy four more motors.



Mike Halloran
Pembroke Pines, FL, USA

 

[L17Aurora]

backstops may come into it somewhere

 

[ExRanger]

Using the direction of rotation of the motors to engage or disenage certain parts of a drive system could be done with ballscrews or helical gears on splines if the torque is low. For instance if a motor turned right, a gear attached to its output shaft could push another gear to slide forward and engage with dog teeth or some simple friction cone or something into a different gear to drive. If the motor turned left, the sliding gear goes the opposite way. I'm imagining the sliding gear being supported on a shaft that just slides in loose fitted bearings until it contacts the gear it will drive.

Then you'd have to build up the rest of the drive train which sounds like it might need a differential somewhere. What is this for, some kind of clockwork machine?

 

[Timelord]

Looks like an application for sprag clutches like these:

http://www.formsprag.com/industrialframe.htm

Timelord

 

[heirblast]

If you want six rollers with three dc motors then that's simple enough. The output shaft of each motor is fitted with two sprag clutches, facing in oposite directions. One sprag clutch drives a reversing gear.
Rotating the motor clockwise drives 'roller one' clockwise direct through the first clutch. Rotating anti-clockwise rotates 'sprag clutch 2' anti-clockwise, which is reversed by the gear so 'roller 2' rotates clockwise.

However, six with two motors sounds like a job for electromagnet clutches and a logic circuit. Or sprag clutches, electromagnet clutches and diode+relay logic. Which might as well be cheap process computer?

It's got to be possible with pure mechanics, but I dont feel it would be reliable or cheap to run.