### Question #: 553

Question:
**
HOW DO DETERMINE THE STEPS PER INCH
**

**
**

**blueChick:
X-axis
“CW230 (3.0A) Driver”
Set to 1/16 Microstep, 2.7A
Dipswitches: 11001100
Mach3 Motor Tuning: 1422.22 steps/in
Y-axis
“CW230 (3.0A) Driver”
Set to 1/16 Microstep, 2.7A
Dipswitches: 11001100
Mach3 Motor Tuning: 1422.22 steps/in
Z-axis
“CW230 (3.0A) Driver”
Set to 1/4 Microstep, 2.7A
Dipswitches: 10101100
Mach3 Motor Tuning: 1600 steps/in
blackToe:
X-axis
“CW230 (3.0A) Driver”
Set to 1/16 Microstep, 2.7A
Dipswitches: 11001100
Mach3 Motor Tuning: 1422.22 steps/in
Y-axis
“CW230 (3.0A) Driver”
Set to 1/16 Microstep, 2.7A
Dipswitches: 11001100
Mach3 Motor Tuning: 1422.22 steps/in
Z-axis
“CW230 (3.0A) Driver”
Set to 1/4 Microstep, 2.7A
Dipswitches: 10101100
Mach3 Motor Tuning: 1600 steps/in
blackFoot:
X-axis
“CW8060 (6.0A) Driver”
Set to 1/16 Microstep, 2.7A
Dipswitches: 11001100 (“0”=down, “1”=up)
Mach3 Motor Tuning: 914.29 steps/in
Y-axis
“CW230 (3.0A) Driver”
Set to 1/16 Microstep, 2.7A
Dipswitches: 11001100
Mach3 Motor Tuning: 1422.22 steps/in
Z-axis
“CW230 (3.0A) Driver”
Set to 1/4 Microstep, 2.7A
Dipswitches: 10101100
Mach3 Motor Tuning: 1600 steps/in
greenBull:
X-axis
“CW8060 (6.0A) Driver”
Set to 5.43A, 1/16 Microstep
Dipswitches: 01100110 (“0”=down, “1”=up)
Mach3 Motor Tuning: 914.29 steps/in
Y-axis
“CW8060 (6.0A) Driver”
Set to 5.43A, 1/16 Microstep
Dipswitches: 01100110
Mach3 Motor Tuning: 914.29 steps/in
Z-axis
“CW8060 (6.0A) Driver”
Set to 5.43A, 1/4 Microstep
Dipswitches: 01100100
Mach3 Motor Tuning: 1600 steps/in
Scratch-Build / Book-Build Kit:
X-axis
“CW230 (3.0A) Driver”
Set to 1/4 Microstep, 2.7A
Dipswitches: 10101100 (“0”=down, “1”=up)
Mach3 Motor Tuning: 1600 steps/in
Y-axis
“CW230 (3.0A) Driver”
Set to 1/4 Microstep, 2.7A
Dipswitches: 10101100
Mach3 Motor Tuning: 1600 steps/in
Z-axis
“CW230 (3.0A) Driver”
Set to 1/4 Microstep, 2.7A
Dipswitches: 10101100
Mach3 Motor Tuning: 1600 steps/inAdditional Information:Additional Information:Scratch built/book CNC with NEMA 34 motors and CW8060 microstep driverAdditional Information:**

**
**

### Other Possible Solutions to this Question

**how do I determine the steps per inch for the motors?**blueChick:

X-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

blackToe:

X-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

blackFoot:

X-axis

“CW8060 (6.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

greenBull:

X-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110

Mach3 Motor Tuning: 914.29 steps/in

Z-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/4 Microstep

Dipswitches: 01100100

Mach3 Motor Tuning: 1600 steps/in

Scratch-Build / Book-Build Kit:

X-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100 (“0”=down, “1”=up)

Mach3 Motor Tuning: 1600 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

Additional Information:

Additional Information:

Scratch built/book CNC with NEMA 34 motors and CW8060 microstep driver

Additional Information:**Click the link to respond:**

how do I determine the steps per inch for the motors?**WHAT IS THE FORMULA TO DETERMINE STEPS PER INCH OR RESOLUTION FOR EACH AXIS?**The formula and calculation is a starting point to get into the area of steps per inch. You will then need to use the mach3 calibration utility to get the exact steps per inch.

Formula:

step per inch = (motor steps * microstepping) / (travel at one turn of the motor in inches)

if microstepping is set at 16 (1/16 on the driver) then and you are using a sprocket and chain with a pitch of .25 inches and 12 teeth on the drive sprocket

= (200 * 16) / (12 * .25)

= 3200 / 3

= 1066.666 steps per inch

For lead screw that has a travel of .5 inches at one turn like the 5 start 1/2 inch lead screw and using 4 microsteps per step (1/4):

= (200 * 4) / (.5)

= 800 / .5

= 1600 steps per inch

Remember to use the mach3 calibration wizard and double check the driver microstep setting.

Additional Information:**Click the link to respond:**

WHAT IS THE FORMULA TO DETERMINE STEPS PER INCH OR RESOLUTION FOR EACH AXIS?**HOW CAN I DETERMINE STEPS/INCH, VELOCITY AND ACCELERATION?**In the customer service live, just enter "motor tuning" and it will give you a list of all the recommended or default settings for our machines. However the acceleration and velocity for the greenBull(other machines) will be an actual determination on your trials. You will want the highest possible acceleration and velocity without the motors stalling, so you can do increments of ten to be on the safe side, if it is too slow try increments of 25.

The steps per inch is dependent on the microstepping:

Steps/Inch for the x and y

Steps = 200 motor steps per revolution x 16 microsteps = 3200 steps

Inches = sprocket number of teeth x pitch of the sprocket = 14 x .25" = 3.5 inches

steps/inch = 3200 / 3.5 = 914.28

This is really a starting point. You will then need to use the mach3 calibration function to get the perfect steps/inch value. Use as long a measurement as possible when calibrating.

Velocity:

Start with a value of 1000 ipm. Increase this value with a relatively low acceleration at about 10. You will notice at a particular velocity that it will stall. This is your stall velocity. I would take the stall velocity and reduce it by about 30% to 50% which should give you a good final safe velocity.

Acceleration:

Once the velocity is found, raise the acceleration until it start to stall at a low velocity. Reduce the acceleration by about the same percentage to stick with a safe acceleration.

The acceleration is mostly dependent on torque (current) and the top speed is dependent on the amount of voltage.

Give some tests with all of the axes running at the same time. If you notice and stalling, reduce velocities and acceleration depending on when the stall happens (top end, or acceleration curve).

X-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110

Mach3 Motor Tuning: 914.29 steps/in

Z-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/4 Microstep

Dipswitches: 01100100

Mach3 Motor Tuning: 1600 steps/in

Additional Information:

Additional Information:

Additional Information:

4th axis

Additional Information:**Click the link to respond:**

HOW CAN I DETERMINE STEPS/INCH, VELOCITY AND ACCELERATION?**How can I determine steps/inch, velocity and acceleration?**In the customer service live, just enter "motor tuning" and it will give you a list of all the recommended or default settings for our machines. However the acceleration and velocity for the greenBull(other machines) will be an actual determination on your trials. You will want the highest possible acceleration and velocity without the motors stalling, so you can do increments of ten to be on the safe side, if it is too slow try increments of 25.

The steps per inch is dependent on the microstepping:

Steps/Inch for the x and y

Steps = 200 motor steps per revolution x 16 microsteps = 3200 steps

Inches = sprocket number of teeth x pitch of the sprocket = 14 x .25" = 3.5 inches

steps/inch = 3200 / 3.5 = 914.28

This is really a starting point. You will then need to use the mach3 calibration function to get the perfect steps/inch value. Use as long a measurement as possible when calibrating.

Velocity:

Start with a value of 1000 ipm. Increase this value with a relatively low acceleration at about 10. You will notice at a particular velocity that it will stall. This is your stall velocity. I would take the stall velocity and reduce it by about 30% to 50% which should give you a good final safe velocity.

Acceleration:

Once the velocity is found, raise the acceleration until it start to stall at a low velocity. Reduce the acceleration by about the same percentage to stick with a safe acceleration.

The acceleration is mostly dependent on torque (current) and the top speed is dependent on the amount of voltage.

Give some tests with all of the axes running at the same time. If you notice and stalling, reduce velocities and acceleration depending on when the stall happens (top end, or acceleration curve).

X-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110

Mach3 Motor Tuning: 914.29 steps/in

Z-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/4 Microstep

Dipswitches: 01100100

Mach3 Motor Tuning: 1600 steps/in

Additional Information:

Additional Information:

Additional Information:

4th axis

Additional Information:**Click the link to respond:**

How can I determine steps/inch, velocity and acceleration?**HOW MANY STEPS PER INCH DO I SET IN MOTOR TUNING?**blueChick:

X-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

blackToe:

X-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

blackFoot:

X-axis

“CW8060 (6.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

greenBull:

X-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110

Mach3 Motor Tuning: 914.29 steps/in

Z-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/4 Microstep

Dipswitches: 01100100

Mach3 Motor Tuning: 1600 steps/in

Scratch-Build / Book-Build Kit:

X-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100 (“0”=down, “1”=up)

Mach3 Motor Tuning: 1600 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

Additional Information:

Additional Information:

Scratch built/book CNC with NEMA 34 motors and CW8060 microstep driver

Additional Information:**Click the link to respond:**

HOW MANY STEPS PER INCH DO I SET IN MOTOR TUNING?**I need to determine steps/inch mach3 setup information for my motors and drivers.**

X-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

blackToe:

X-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

blackFoot:

X-axis

“CW8060 (6.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

greenBull:

X-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110

Mach3 Motor Tuning: 914.29 steps/in

Z-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/4 Microstep

Dipswitches: 01100100

Mach3 Motor Tuning: 1600 steps/in

Scratch-Build / Book-Build Kit:

X-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100 (“0”=down, “1”=up)

Mach3 Motor Tuning: 1600 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

Additional Information:

Additional Information:

Scratch built/book CNC with NEMA 34 motors and CW8060 microstep driver

Additional Information:**Click the link to respond:**

I need to determine steps/inch mach3 setup information for my motors and drivers.**HOW DO I DETERMINE THE AMOUNT OF SCREW WEIGTH THAT MY MOTOR CAN HANDLE**There are two main questions that we can answer with respect to motor torque and the mechanical advantage of lead screws, 1) What torque motor do you need to lift a particular weight, or 2) What maximum weight will my motor torque be able to lift.

This formula uses Newtons (N) as it's final unit. Use this with the included radius (R) to determine the torque. Newtons can easily be converted to lbs or ounces using online conversions.

Effort = Sf + (Load/(2 x pi x (R/p) x Se))

where:

p = pitch of the screw

Se = screw efficiency = Standard lead screw will be between 20% (.2) and 40% (.4)

Sf = static force. This is the force that is needed to start the movement. The number may be eliminated, but it is good to use a number in the 5 N to 20 N range.

Load = the expected load that the effort will need to carry (i.e., the router and the included axis assembly that the motor will need to lift)

R = radius of the lead screw

This formula is based on the "law of the machine"

The final effort amount with its unit of newtons and R will be the torque. For example, if the effort comes to 100 N (newtons) and the R is .5 inches, then you can assume that the effort is 50 N-in since it would take twice the effort to turn form the one inch mark from the center of the shaft.

Example:

Load = 90 N (20.2 lbs)

R = 1 inch since that is the length from the center of the shaft that the motor is rated

p = 1 inch / 13 = .08 inches

Effort = 5 N + (90 N / (2 x 3.14 x (1 / .08) x .2))

Effort = 5 N + (90 N / (6.28 x 12.5 x .2))

Effort = 5 N + (90 N / (15.7))

Effort = 5 N + (5.73 N)

Effort = 10.7 N = 2.4 lbs = 38.4 oz-in

I am putting the oz-in on the end because the formula considers the distance from the center of the shaft to be one inch.

Therefore, a 425 oz-in motor would be able to lift a 20.2 lb Router with its accompanying assembly. If the assembly and router is heavier, plug in the numbers and determine the effort required.

With a bit of algebra, the formula can be rewritten to find the load:

Load = (Effort - Sf) x (2 x pi x (R/p) x Se)

Another formula that does not consider friction at all:

Effort = (Load x p) / (2 x pi x R)

Lets see if we get similar results:

Effort = (20 lb x .08 inches) / (2 x 3.14 x 1)

Effort = 1.6 / 6.28 = .255 lbs = 4.08 oz-in

The results from both formulas appear to be very small because a 13 TPI screw will have enormous mechanical advantage.

It is evident that the first formula that does consider friction that we are loosely estimating is far more conservative than the second formula. Either way, even the most conservative formula shows that the 425 oz-in motor will handle very large weights. If you are using a lead screw with only two turns per inch, .5 inch pitch, you can determine the requirements with the first formula.

Example for a 10 TPI 5 start (2 turns per inch) lead screw:

Load = 90 N (20.2 lbs)

R = 1 inch since that is the length from the center of the shaft that the motor is rated

p = 1 inch / 2 = .5 inches

Effort = 5 N + (90 N / (2 x 3.14 x (1 / .5) x .2))

Effort = 5 N + (90 N / (6.28 x 2 x .2))

Effort = 5 N + (90 N / (2.512))

Effort = 5 N + (35.83 N)

Effort = 40.828 N = 9.18 lbs = 146.88 oz-in

Customer Response:

thank you so much

Additional Information:

Additional Information:

Additional Information:

how do i calculate torque of stepper motor if lead screw coupled to motor shaft and load applied by lead screw on plate is 100 kg by vertically

Additional Information:

Pls

Additional Information:

1m 16mmdiameter ball screws calculations**Click the link to respond:**

HOW DO I DETERMINE THE AMOUNT OF SCREW WEIGTH THAT MY MOTOR CAN HANDLE**how do you calibrate steps per inch using Mach3 and a 1/2x13 lead screw**You will first need to derive the number of turns per inch that your lead screw produces. If there is only a single start (typical all thread screws), then the turns per inch is the same as TPI (threads per inch). If there is multiple starts, then the number of starts is divided by the TPI to determine the turns per inch. For example, 10 TPI with 5 starts is 10 / 5 = 2 turns per inch. Now that we know this, we can get the number of steps per inch as described in the previous question: take the number of steps per revolution that the motor will output. This will be the number of full steps that you motor produces (typically 200, or 1.8 degrees per step) multiplied by the microstepping per step to which the driver is configured. Simply multiple the number of turns per inch and the number of steps per revolution and you will get the steps per inch. Ok, lets see the formula:

200 steps * 16 microsteps * 2 turns per inch = 6400 steps per inch

Additional Information:

14798

Additional Information:

hallo i have cnc with ball screw 2.5mm of pith..n driver stepping 1/16 how to setup step value

Additional Information:

i have ball screw with 2.5 mm of pith n 1 start motor 200 step 1/16 driver stepping**Click the link to respond:**

how do you calibrate steps per inch using Mach3 and a 1/2x13 lead screw**HOW MANY STEPS PER INCH?**

X-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

blackToe:

X-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

blackFoot:

X-axis

“CW8060 (6.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

greenBull:

X-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110

Mach3 Motor Tuning: 914.29 steps/in

Z-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/4 Microstep

Dipswitches: 01100100

Mach3 Motor Tuning: 1600 steps/in

Scratch-Build / Book-Build Kit:

X-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100 (“0”=down, “1”=up)

Mach3 Motor Tuning: 1600 steps/in

Y-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in

Additional Information:

Additional Information:

Scratch built/book CNC with NEMA 34 motors and CW8060 microstep driver

Additional Information:**Click the link to respond:**

HOW MANY STEPS PER INCH?**What determines how fast the stepping motors will spin?**The amount of voltage that is used to power the motors will generally determine the top RPM of the stepping motors. As you increase the voltage, the time constant is reduced in the process of current flowing through the coils of the motor. The faster the current can be drawn through the coils, the faster the motor will spin.

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What determines how fast the stepping motors will spin?**How do I configure my control program (i.e. Mach3, EMC2, etc.) for lead screw steps per inch?**You will first need to derive the number of turns per inch that your lead screw produces. If there is only a single start (typical all thread screws), then the turns per inch is the same as TPI (threads per inch). If there is multiple starts, then the number of starts is divided by the TPI to determine the turns per inch. For example, 10 TPI with 5 starts is 10 / 5 = 2 turns per inch. Now that we know this, we can get the number of steps per inch as described in the previous question: take the number of steps per revolution that the motor will output. This will be the number of full steps that you motor produces (typically 200, or 1.8 degrees per step) multiplied by the microstepping per step to which the driver is configured. Simply multiple the number of turns per inch and the number of steps per revolution and you will get the steps per inch. Ok, lets see the formula:

200 steps * 16 microsteps * 2 turns per inch = 6400 steps per inch

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14798

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hallo i have cnc with ball screw 2.5mm of pith..n driver stepping 1/16 how to setup step value

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i have ball screw with 2.5 mm of pith n 1 start motor 200 step 1/16 driver stepping**Click the link to respond:**

How do I configure my control program (i.e. Mach3, EMC2, etc.) for lead screw steps per inch?**How do I determine what CAM program I should use?**There are several specifications related to CAM software that you will need to consider.

1. The CAM software will need to be able to offer the features that match that of the machine you select to perform the fabrication. Some of these machines include, standard 3 axis vertical CNC milling machine, turning machine, and 4 or 5 axis CNC machine.

2. The CAM software will need to contain the features that you feel are necessary for how you will apply the machine. For example, are you making signs? Are you milling parts for a machine? There is a wide array of CAM software that will work well for one application and not another.

3. The CAM software will need to work well with your workflow and processes, and have the user interface that you prefer.**Click the link to respond:**

How do I determine what CAM program I should use?**How do I configure my control program (i.e. Mach3, EMC2, etc.) for roller chain or timing belt steps per inch?**First, you will need to know the pitch of the roller chain, or timing belt. For example, #25 roller chain is .25" (1/4") pitch and #40 roller chain is .5" (1/2") pitch. Timing belts are similar and you will need to search the specifications of your particular drive pulley pitch. Take this pitch and multiply this with the number of teeth on the drive pulley/sprocket. This will give you the number of inches around the pulley/sprocket. Now, take the number of steps per revolution that the motor will output. This will be the number of full steps that you motor produces (typically 200, or 1.8 degrees per step) multiplied by the microstepping per step to which the driver is configured. Divide this number by the inches that was calculated from the drive pulley/sprocket. Here is an example: If the motor produces 200 steps per revolution and I am driving it at 1/16 microstepping and my sprocket pitch is .25" with 9 teeth, my formula would be:

(200 steps * 16 microsteps) / (.25 inches * 9 teeth) = 3200

steps per revolution / 2.25 inches = 1422.222 steps per inch**Click the link to respond:**

How do I configure my control program (i.e. Mach3, EMC2, etc.) for roller chain or timing belt steps per inch?**How can I determine which wires on my stepper motor bellong to A+ A- B+ or B-?**You can use a multimeter to determine the wires of the same coil (i.e A+ and A- belong to he same coil). The wires that are connected on the same coil will have relatively low resistance. A wire from one coil to another coil with have no continuity since the two coils are not touching each other.

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How can I determine which wires on my stepper motor bellong to A+ A- B+ or B-?**stepper motor steps per inch formula**The formula and calculation is a starting point to get into the area of steps per inch. You will then need to use the mach3 calibration utility to get the exact steps per inch.

Formula:

step per inch = (motor steps * microstepping) / (travel at one turn of the motor in inches)

if microstepping is set at 16 (1/16 on the driver) then and you are using a sprocket and chain with a pitch of .25 inches and 12 teeth on the drive sprocket

= (200 * 16) / (12 * .25)

= 3200 / 3

= 1066.666 steps per inch

For lead screw that has a travel of .5 inches at one turn like the 5 start 1/2 inch lead screw and using 4 microsteps per step (1/4):

= (200 * 4) / (.5)

= 800 / .5

= 1600 steps per inch

Remember to use the mach3 calibration wizard and double check the driver microstep setting.

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stepper motor steps per inch formula**How do I order the 10 TPI 5-start 2-turns-per-inch screws?, just shows $ per inch with no option for lenght.**When purchasing the 1/2" 5 start lead screw, the length is based on the quantity. Specify the total length you will need and we will email you (if you don't contact us first) to determine the cut lengths.

For example, if you desire 36 inches of lead screw for the X axis and 12 inches of lead screw for the Y axis, just purchase 48 inches of lead screw and tell us you need this lead screw cut so you have two lengths at 36 inches and 12 inches.**Click the link to respond:**

How do I order the 10 TPI 5-start 2-turns-per-inch screws?, just shows $ per inch with no option for lenght.**While motor tuning what are the recommended steps per inch, velocity, and acceleration for the GreenBull CNC?**In the customer service live, just enter "motor tuning" and it will give you a list of all the recommended or default settings for our machines. However the acceleration and velocity for the greenBull(other machines) will be an actual determination on your trials. You will want the highest possible acceleration and velocity without the motors stalling, so you can do increments of ten to be on the safe side, if it is too slow try increments of 25.

The steps per inch is dependent on the microstepping:

Steps/Inch for the x and y

Steps = 200 motor steps per revolution x 16 microsteps = 3200 steps

Inches = sprocket number of teeth x pitch of the sprocket = 14 x .25" = 3.5 inches

steps/inch = 3200 / 3.5 = 914.28

This is really a starting point. You will then need to use the mach3 calibration function to get the perfect steps/inch value. Use as long a measurement as possible when calibrating.

Velocity:

Start with a value of 1000 ipm. Increase this value with a relatively low acceleration at about 10. You will notice at a particular velocity that it will stall. This is your stall velocity. I would take the stall velocity and reduce it by about 30% to 50% which should give you a good final safe velocity.

Acceleration:

Once the velocity is found, raise the acceleration until it start to stall at a low velocity. Reduce the acceleration by about the same percentage to stick with a safe acceleration.

The acceleration is mostly dependent on torque (current) and the top speed is dependent on the amount of voltage.

Give some tests with all of the axes running at the same time. If you notice and stalling, reduce velocities and acceleration depending on when the stall happens (top end, or acceleration curve).

X-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in

Y-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/16 Microstep

Dipswitches: 01100110

Mach3 Motor Tuning: 914.29 steps/in

Z-axis

“CW8060 (6.0A) Driver”

Set to 5.43A, 1/4 Microstep

Dipswitches: 01100100

Mach3 Motor Tuning: 1600 steps/in

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4th axis

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While motor tuning what are the recommended steps per inch, velocity, and acceleration for the GreenBull CNC?**How to determine lead screw length needed. My Thomson 1 1:4 rails are 60 inches long roughly for the router I’m building. I know I have to have it long enough to couple up with the stepper motor of course but does it matter if it’s a little long on the other end**It generally does not matter if it is longer at the other end as long as the lead screw provides the desired travel for that axis. The lead screw will only need to be long enough for the travel, plus any structure and lead-nut positioning.

For example:

- The motor that will turn the lead screw will need to be mounted at some position (generally at one end of the axis). In many cases, this positioning will be mounted where some of the lead screw will not be used (the lead nut will not be able to moved close to the coupling of the lead screw to the motor shaft). Add some of the length of the lead screw to be inserted into the coupling.

- If the lead screw will contain bearings at either end of the travel, that portion of the mechanical assembly will need to be considered in the lead screw length.

- The lead-nut will need to be mounted in a position on a structural member of the part that is to move. The distance from the part of the structure that will extend closest to the motor will have some distance to the position of the lead nut. This distance will need to be added to the lead screw length.

Add these discrepancies to the length of the lead screw and the travel length and you will have the final length.**Motor tuning. While motor tuning what are the recommended steps per inch, velocity, and acceleration for the BlackFoot CNC?**These are the recommend values(default) for our blackFoot CNC machine, the acceleration and velocity can be adjusted as high as the motor can rotate without stalling! Suggested increment's will be by 10's.

blackFoot:

X-axis

“CW8060 (6.0A) Driver”

Set to 1/16 Microstep, 5.43A

Dipswitches: 01100110 (“0”=down, “1”=up)

Mach3 Motor Tuning: 914.29 steps/in, Velocity 400.02, Acceleration 4

Y-axis

“CW230 (3.0A) Driver”

Set to 1/16 Microstep, 2.7A

Dipswitches: 11001100

Mach3 Motor Tuning: 1422.22 steps/in, Velocity 400.02, Acceleration 4

Z-axis

“CW230 (3.0A) Driver”

Set to 1/4 Microstep, 2.7A

Dipswitches: 10101100

Mach3 Motor Tuning: 1600 steps/in, Velocity 79.98, Acceleration 5

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how can we tuning the CNC motor**Click the link to respond:**

Motor tuning. While motor tuning what are the recommended steps per inch, velocity, and acceleration for the BlackFoot CNC?