How to calculate required torque?

[jharvey407]

I have a Z axis driven by a lead screw. How do I calculate the torque required to drive the axis?

Here is a picture of the Z Axis. You can see the stepper and the screw on the side of the axis.

[Al_The_Man]

This may help.
http://www.kollmorgen.com/en-us/supp.../motioneering/
Al.

[jharvey407]

This may help.
http://www.kollmorgen.com/en-us/supp.../motioneering/
Al.

I have a copy of that software, it's not really what I'm looking for.

I would actually like to learn how to do the calculations.

[Al_The_Man]

http://automationinmotion.com/images...7200416437.pdf
Servo Motor Sizing Concepts - 2009-06-15 06:00:00 | Design News
http://www.yaskawa.com/site/dmservo.nsf/link2/NKOE-7TKLD2/$file/PR.DN.01.pdf
Al.

[Al_The_Man]

Another program, see p2 for formulae.
Aerotech| Engineering Reference Motor Selection & Sizing
Al.

[brw0513]

Another program, see p2 for formulae.
Aerotech| Engineering Reference Motor Selection & Sizing
Al.

Al,

That article is a good read, but I can't see any discussion on "chip load". I would have expected chip load would play a significant role in motor selection.

Do you know different?

Thanks,

Ian

[Al_The_Man]

The Kollmorgan and other programs refer to it as side load.
One of the main components of motor selection comes from motor to load inertia, of which accel/decel rates have the largest influence.
Al.