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Question #: 2322

Question: How far does the X axis of the blackfoot travel per turn of the stepper motor ?

Current Solution

The amount traveled per turn in our blackFoot, will be dependent on the steps per inch settings that you will implement to your drivers and within the software (mach3 (ex)) motor tunning: steps per inch/ 1422.22, 1/4 on your driver will give you a different distance if used as 1/2 or 1/8 etc.


Here is a in depth tutorial on how to find the correct steps per inch for a specifications: (

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Other Possible Solutions to this Question

  • What side of the x and y axis do you mount the stepper motor to? If it does not matter what side, do I have to change something in mach3?

    It is usually best to mount the motor in a way so it is spinning clockwise to avoid confusion.

    Additional Information:
    ok, but lets say the motors turn clockwise. if you mount it to ether side of the y axis it will pull to that side so what are the correct positions of the stepper motors. is it the left side or the right side of the y axis and also is it the front or back of the x axis?

    Additional Information:
    cw250 with mach3 controller

    Click the link to respond:
    What side of the x and y axis do you mount the stepper motor to? If it does not matter what side, do I have to change something in mach3?

  • Can I run two stepper motors off the same axis output on the USB controller?

    Yes, you can use 2 motors in the same axis output, however you will still need a driver for that motor! Also depending on the orientation on which you mount the motor you might have to invert the direction of the motor, and that will be simple by swapping the A+,A-, to the B+,B- locations and vice versa, from the driver to the motor wiring.

    Also you can run a slave motor using another axis on the board, and setting it up in the Planet-CNC settings.

    Planet-CNC/File/Settings/Axes, here you will enter 3 in the Number of Axes location, and then change the Function of the Axis 4 to Slave 1. There you will have the 4th axis or A-axis be a slave for the x-axis.
    Slave 1 - X-Axis
    Slave 2 - Y-Axis
    Slave 3 - A-Axis
    Slave 4 - B-Axis
    Etc...

    Click the link to respond:
    Can I run two stepper motors off the same axis output on the USB controller?

  • I cannot turn the shaft of my stepper motor. It not even connected to a driver

    The motor is creating it's own EMF when you try to turn the shaft manually. When coils are connected (or not connected) to any circuit that is not powered can cause unpredictable results.

    The motor freezing from just turning it by hand with no connection is surely the wires touching each other. This is actually how we test if a motor is good or bad. If the motor freezes when two of the wires are touching, that means the motor is functioning properly since the magnets are causing current to flow through that coil opposing the magnet.

    Click the link to respond:
    I cannot turn the shaft of my stepper motor. It not even connected to a driver

  • From the BOB how can I reverse one of my steppers - i'm running 2 on my Y Axis

    When trying to use two motors on a single axis, there is a multitude of methods to get them to work together.
    First: There should always be a slave option in the CNC control software(mach 3/ planet-cnc/emc2/etc.), this will be the easiest way to make the dual motor configuration work. However some adjusting might be necessary due to the orientation of the motor when mounting it on the opposite side of the CNC machine.(Mach3/config/slaveaxis, planet-cnc/file/settings/axes).

    Secondly: Dealing with our interface boards(maybe third-party as well), you can have two drivers going to the same axis on the interface board. Which then will have one motor per driver, this will use the same motion and control from the (ex.) x-axis to driver two motors. However some adjusting might be necessary due to the orientation of the motor when mounting it on the opposite side of the CNC machine.

    Adjusting of the driver or motor wires, can be done separate from the control software with the use of a hex inverter, that can be used and to switch the signal (ex. takes a low signal and brings it high, and takes a high signal and brings it low) of one of the motors, to run the same as the other motor.
    There is also another method of inverting the orientation of the motors movement without the use of a hex inverter. This method you will have to wire the coil's of the motors oppositely of what is recommended for one of the motors. Example, you will wire our Nema 24 as follows(recommended): A+ - red/blue, A- - yellow/black, B+ - white/brown, B- - green/orange. However to run another motor with with it you will have to switch the A/B connections to: A+ - white/brown, A- - green/orange, B+ - red/blue, B- - yellow/black.

    These method's are usually needed/used when trying to control two motors and setting it up without the help of the CNC control software, and also due to the mounting orientation of the second motor, the inverting the direction of motion will be necessary so they work together instead of working against each other.

    Click the link to respond:
    From the BOB how can I reverse one of my steppers - i'm running 2 on my Y Axis

  • So after I install the stepper motors, how does the system know what’s the start position ? I’m modifying a lathe.

    If you are using a control program, like Mach3, then you will move (jog) the axis to the location that you want to set as your start position and "zero" that axis. Make sure that the axis moves in the positive direction where you would expect. If this is not the case, you will need to reverse that axis according to the instruction with your control program.

    Click the link to respond:
    So after I install the stepper motors, how does the system know what’s the start position ? I’m modifying a lathe.

  • How long does it take to ship to Israel 3 nema 11 stepper motors ?

    Unfortunately I am not able to give an estimate of shipping time. This is because there are multiple shipping options, Some of them cost more than others, but ensure the package arrives in a certain number of days. Others do not give a number of days, and many factors could change the length of shipping time, such as weather, or busy season. It would be best to choose an option you are comfortable with the price of, and then Google search the typical times it takes for that option to get to you, or call the shipping company and request that estimated time from them.

    Click the link to respond:
    How long does it take to ship to Israel 3 nema 11 stepper motors ?

  • How do I wire two stepper motors for one axis?

    Yes, you can use 2 motors in the same axis output, however you will still need a driver for that motor! Also depending on the orientation on which you mount the motor you might have to invert the direction of the motor, and that will be simple by swapping the A+,A-, to the B+,B- locations and vice versa, from the driver to the motor wiring.

    Also you can run a slave motor using another axis on the board, and setting it up in the Planet-CNC settings.

    Planet-CNC/File/Settings/Axes, here you will enter 3 in the Number of Axes location, and then change the Function of the Axis 4 to Slave 1. There you will have the 4th axis or A-axis be a slave for the x-axis.
    Slave 1 - X-Axis
    Slave 2 - Y-Axis
    Slave 3 - A-Axis
    Slave 4 - B-Axis
    Etc...

    Click the link to respond:
    How do I wire two stepper motors for one axis?

  • How can I have two stepper motors on one axis

    Yes, you can use 2 motors in the same axis output, however you will still need a driver for that motor! Also depending on the orientation on which you mount the motor you might have to invert the direction of the motor, and that will be simple by swapping the A+,A-, to the B+,B- locations and vice versa, from the driver to the motor wiring.

    Also you can run a slave motor using another axis on the board, and setting it up in the Planet-CNC settings.

    Planet-CNC/File/Settings/Axes, here you will enter 3 in the Number of Axes location, and then change the Function of the Axis 4 to Slave 1. There you will have the 4th axis or A-axis be a slave for the x-axis.
    Slave 1 - X-Axis
    Slave 2 - Y-Axis
    Slave 3 - A-Axis
    Slave 4 - B-Axis
    Etc...

    Click the link to respond:
    How can I have two stepper motors on one axis

  • The rods in my blackFoot gantry connected to the x-axis motor are bowing or bending.

    We are using the 1/2" rods in the gantry now. You can opt to purchase 1/2" rods and new gantry sides which will accept 1/2" ID bearings.

    Click the link to respond:
    The rods in my blackFoot gantry connected to the x-axis motor are bowing or bending.

  • What size stepper motors does the blueChick use?

    The blueChick uses NEMA 23 425 oz/in motors.

    Click the link to respond:
    What size stepper motors does the blueChick use?

  • How much Z-axis travel does the 48x96 greenlean machine have?

    The greenLean Z-axis travel is about 4" - 5"-3/4".

    Click the link to respond:
    How much Z-axis travel does the 48x96 greenlean machine have?

  • I ordered the 3-axis medium stepper motor kit. The drivers i recieved were those for the 3-d printer main board, not the modular ones. How am i suppose to wire that up now?
  • What brand and/or country of origin are the stepper motors?

    The stepping motors we sell are from China.

    Click the link to respond:
    What brand and/or country of origin are the stepper motors?

  • Are the stepper motors on x and y axis suppose to be hot after running for approximately 30 min. I can touch them but they are hot.

    If your motors are hot to the touch, this is normal. Current is being drawn by the motor coils as the motor moves and as the motor stays at a position. If the motor is not using the current in the coils to move (holding it's position), the energy will be translated as heat (rather than motion, sound or light). Even while moving, some of the energy will be lost as heat. Remember that energy cannot be created nor destroyed.

    Click the link to respond:
    Are the stepper motors on x and y axis suppose to be hot after running for approximately 30 min. I can touch them but they are hot.

  • stepper motor runs smooth then rough for a moment then smooth, etc. Does this at all steps, and connected motors.

    This sounds like it could be a loose wire, or poor connection with the motor wires. Make sure all wires that are to be connected to each other are soldered and use a lineman's splice when putting the wires together. Also, make sure that the wires going into the driver is securely fastened.

    If this is an issue where the motors have run well for a long time then just started to show this performance issue, then make sure that there are no wire ties or other binding method that is chaffing the wires. This would make the motors run oddly at certain travel positions where the chafing has caused a short with the wires.

    If this is an issue where you don't have the motor plugged in at all and are just trying to turn it by hand and this phenomenon is occuring, then make sure all of the wires are not touching each other. When wires are touching each other and you are trying to spin the shaft by hand, the motor will feed current back into the motor making it difficult to turn.

    Click the link to respond:
    stepper motor runs smooth then rough for a moment then smooth, etc. Does this at all steps, and connected motors.

  • can my stepper motor lift the weight of my router?

    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:
    can my stepper motor lift the weight of my router?

  • what is the wiring coler and pin # for the whiteant extruder stepper motor

    For our extruder motor wire color and pin would be Red(A), Yellow(C), Gray(B), Green(D). The 2 x 3 (6) pin connectors on our 3D mainboard, are connectors for motor drivers. Pin #1 is 12v, Pin #2 s ground, Pin #3 is step, Pin #4 is direction, Pin #5 is enable and, Pin #6 is 5v.

    Click the link to respond:
    what is the wiring coler and pin # for the whiteant extruder stepper motor

  • What are the toggle switch settings on the stepper motor drivers for the .5 in. lead screw 10 tpi 2 turns per inch? Thankyou!

    On the top of the stepper motor drivers is a grid with the appropriate toggle switch positions for the lead screw being used. If it is 2 turns per inch, the proper toggle switch positions would be 01101110. Try this and see if it works.

    Click the link to respond:
    What are the toggle switch settings on the stepper motor drivers for the .5 in. lead screw 10 tpi 2 turns per inch? Thankyou!

  • Hi please could you tell me how to work out the size required for the stepper motors ? which kit to get thanks

    The size of motors required for your machine build will depend on many characteristics of the machine.

    If the machine uses a gantry (rather than moving the table bed) and the weight of the gantry (specifically with inertia),

    The mechanics used with the axes, lead screw, roller chain, timing belt or rack and pinion. Generally you will need less torque if using lead screw due to the mechanical advantage, but friction is important to consider.

    If you are building a 4'x8' or larger machine, it would be best to use: https://buildyourcnc.com/item/electronicsAndMotors-3axis-heavy-gantry-elcombo

    Otherwise: this electronics: https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo should be fine for most configurations.

    If you feel that you need extra torque on the z-axis (the z-axis will use a very heavy spindle, for instance), use this electronics: https://buildyourcnc.com/item/electronicsAndMotors-3axis-651-elcombo

    Click the link to respond:
    Hi please could you tell me how to work out the size required for the stepper motors ? which kit to get thanks

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