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Step 8The Lead Screw (step#2)
If you use a 1/2-10 ACME screw and ACME Nut that means that the ACME screw
will turn 10 times and during this time it will advance 1 inch. If you use 3/4-6 ACME
rods and ACME nut - this means the ACME screw
will turn 6 times and during this time it will advance 1 inch.
When calculating the steps-per inch on a machine you need to know the ACME
value and the stepper motor steps.
For example: using 1/2-10 ACME with a stepper motor driver at 1/2 step - to
calculate the steps per inch follow these steps 10 turns per inch times 200
(which is the usually stepper motor steps per turn) times 2 (this is the half step
of the stepper motor driver) the total comes to 4000. This means that the
resolution of your machine will be 4000 steps per inch
If you decided to go with the ENCO threaded rods, you can buy from them the ACME nut as well. Here is the link ACME Nuts
www.8linx.com
will turn 10 times and during this time it will advance 1 inch. If you use 3/4-6 ACME
rods and ACME nut - this means the ACME screw
will turn 6 times and during this time it will advance 1 inch.
When calculating the steps-per inch on a machine you need to know the ACME
value and the stepper motor steps.
For example: using 1/2-10 ACME with a stepper motor driver at 1/2 step - to
calculate the steps per inch follow these steps 10 turns per inch times 200
(which is the usually stepper motor steps per turn) times 2 (this is the half step
of the stepper motor driver) the total comes to 4000. This means that the
resolution of your machine will be 4000 steps per inch
If you decided to go with the ENCO threaded rods, you can buy from them the ACME nut as well. Here is the link ACME Nuts
www.8linx.com
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