[mactec54]

That's new to me.

This is normal and how it is normally done. when you want to use ( 1 ) Breakout Board output, to run ( 2 ) motors, unless you have another way it can be done, we would love to hear, how you would do it.

[Zorbit]

This is normal and how it is normally done. when you want to use ( 1 ) Breakout Board output, to run ( 2 ) motors, unless you have another way it can be done, we would love to hear, how you would do it.

I think you are confused, see Cutworkscnc post;

" No, you dont need a left and right lead screw. That would just be silly. both of my motors run the same direction to move the gantry along the y axis with ball screws. If the motors are attached to the gantry and move it along via belt or rack and pinion, then you will need to reverse one of the motors leads to have it operate in reverse."

[mactec54]

I think you are confused, see Cutworkscnc post;

" No, you dont need a left and right lead screw. That would just be silly. both of my motors run the same direction to move the gantry along the y axis with ball screws. If the motors are attached to the gantry and move it along via belt or rack and pinion, then you will need to reverse one of the motors leads to have it operate in reverse."

Correct that was a mistake on my part with the left and right hand screw for normal use, I did not pick it up, but should of been referring to a helical rack and not a Ballscrew, the Racks have to be left and right hand

[mactec54]

I think you are confused, see Cutworkscnc post;

" No, you dont need a left and right lead screw. That would just be silly. both of my motors run the same direction to move the gantry along the y axis with ball screws. If the motors are attached to the gantry and move it along via belt or rack and pinion, then you will need to reverse one of the motors leads to have it operate in reverse."

I should of explained it better a Left and Right hand Ballscrew is need when using ( 1 ) motor, 2 Ballscrews, here is an engineering post on this subject so nothing silly about it at all, Helical racks also have to have left and right hand which a lot of builder's are now using

Depending on the drive arrangement this could still be done with ( 2 ) right hand Ballscrews with ( 1 ) motor being used like you are saying but with any gearing being used ( 1 ) Ballscrew would be reversed so then would need a Right and Left hand Ballscrew

Why in the world would anyone need a ball screw with a left-handed thread? Why not simply reverse the program and drive the device in the opposite direction? Unfortunately, this may not always be the best solution. Several industrial applications require a left-handed ball screw to help resolve high-precision programming requirements and reduce the number of needed expensive components.


For example, a system designed with two ball screws; one right-handed and the other left-handed, with each unit positioned on either side of one drive motor moving in opposite directions. This configuration is less expensive and much more practical because only one motor is required and there is no need to synchronize two separate right-handed ball screw systems driven with two servo or stepper motors.

[Zorbit]

I should of explained it better a Left and Right hand Ballscrew is need when using ( 1 ) motor, 2 Ballscrews, here is an engineering post on this subject so nothing silly about it at all, Helical racks also have to have left and right hand which a lot of builder's are now using

Depending on the drive arrangement this could still be done with ( 2 ) right hand Ballscrews with ( 1 ) motor being used like you are saying but with any gearing being used ( 1 ) Ballscrew would be reversed so then would need a Right and Left hand Ballscrew

Why in the world would anyone need a ball screw with a left-handed thread? Why not simply reverse the program and drive the device in the opposite direction? Unfortunately, this may not always be the best solution. Several industrial applications require a left-handed ball screw to help resolve high-precision programming requirements and reduce the number of needed expensive components.


For example, a system designed with two ball screws; one right-handed and the other left-handed, with each unit positioned on either side of one drive motor moving in opposite directions. This configuration is less expensive and much more practical because only one motor is required and there is no need to synchronize two separate right-handed ball screw systems driven with two servo or stepper motors.

Can you link to any machines that use a left and right hand ballscrew ? The only reason I can think for doing it is if the two screws were very close to each other and gear driven one from the other, if both screws were driven from one gear on the motor there's no need to reverse one screw thread.