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Question #: 165

Question: My motors are not turning smoothly.

Current Solution

Increase the microsteps on the driver. Try 1/4, then move up from there if it is still not as smooth as you want it to be.

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Other Possible Solutions to this Question

  • THE MOTORS ARE NOT TURNING

    Make sure you follow the tutorial here: http://www.buildyourcnc.com/CNCElectronicsandWiring.aspx

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    THE MOTORS ARE NOT TURNING

  • MY MOTORS ARE RUNNING VERY 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.

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    MY MOTORS ARE RUNNING VERY HOT.

  • HI..I am having a problem with my machine going off axis and not returning to zero

    Hi, can you elaborate on what you mean off axis? If the CNC router is milling correctly and then suddenly in a location that you would not expect, then you are exceeding the torque of the stepper motors and stalling. If the cnc router stalls, then the cnc router will continue but the software controlling the cnc router will not have the correct position of the cnc router.

    If this is the case, then you need to either reduce the acceleration, reduce the velocity, or both. Does the problem occur during the milling process or during the jogging (rapids)?

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    HI..I am having a problem with my machine going off axis and not returning to zero

  • spindle not turning

    I recently purchased a 6040 in march. I have taken very good care of it. Have not abused it. I have about 20 hours on the 1.5kw water cooled spindle of machine time cutting carbon fiber at stupid slow speeds. Last night, no bueno. Spindle will not run. I have no clue what happened. Spindle was controlled by MACH3, I run the program, it turns on, program stops it. I have no idea how to get it manually to turn on with all the buttons on the outside. VFD is new to me... I thought I was buying something more reliable, but haha jokes on me. I changed nothing. Did not crash the machine. Spindle did not make any funny noises, and I never saw the blue smoke of death. I am clueless why something would fail so quick. I have a 800kw water cooled on another router that has been running like a champ with no issues for 2 years. I abuse that one because I always wanted a bigger spindle. Thing still works like a champ. I am a "hobbyist" per say when it comes to these machines, but I do own quite a few of them. I have rebuilt quite a few routers as the San Antonio power is funny and have had quite a few surges that have damaged the control boxes.

    This morning, took another look at the nonworking one. Now when I power on the VFD, the spindle will start a slow rotation which can be reversed by manually clicking the directional button on the vfd display, and the display just shows the number 5 which I am assuming is the rpm, but I have no clue. I have no idea what configuration it is setup for. With the 800kw VFD, i turn on the power, hit run button, and then use a dial to ramp up the speed. This one doesn't have that options as far I can tell. The spindle will stop rotating with the slightest pressure applied to it. I tried to used the spindle hotkey on mach to turn on or do something, but no go. I give it a m03 and m04 command with speed of 10000, no go. The VFD is wired into the entire control box. It runs off the same power supply as the stepper drivers. The steppers work flawless with no problems. The spindle and steppers both run off the same usb breakout card. I have uninstalled, reinstalled, reinstalled all the plug-ins that came with it. I have changed usb ports. I have changed no settings in mach. So I think I have it narrowed down to either the spindle or the VFD. When I manually spin the spindle, I do not feel any wiggle, wobble, hangups.

    I have basically given up. I will try and deal with the china company later, but I need a working spindle sooner than i can get one from china. The router currently uses MACH3 to turn on and off the spindle and I have not acquired the electrical knowledge on how to set that up, etc. It was plug and play. So if you have something that I can manually turn on from outside and at some point hook up all the fancy wiring at a later time, that would be awesome.

    So the current spindle is a gdz 80-1.5 80x188mm 110v 1.5kw 5A 24000RPM

    If you think it is a spindle issue, let me know, if you think it is a VFD issue let me know. I am open to watching videos and see if i can trouble shoot it myself. I just dont want to keep speding $500 on new spindles every 20 hours.

    Price is really not an issue , if you think it is a combo problem will be glad to take advice. I just need someone local to help me get running again sooner than later






    Additional Information:

    Proposed Answer: I recently purchased a 6040 in march. I have taken very good care of it. Have not abused it. I have about 20 hours on the 1.5kw water cooled spindle of machine time cutting carbon fiber at stupid slow speeds. Last night, no bueno. Spindle will not run. I have no clue what happened. Spindle was controlled by MACH3, I run the program, it turns on, program stops it. I have no idea how to get it manually to turn on with all the buttons on the outside. VFD is new to me... I thought I was buying something more reliable, but haha jokes on me. I changed nothing. Did not crash the machine. Spindle did not make any funny noises, and I never saw the blue smoke of death. I am clueless why something would fail so quick. I have a 800kw water cooled on another router that has been running like a champ with no issues for 2 years. I abuse that one because I always wanted a bigger spindle. Thing still works like a champ. I am a "hobbyist" per say when it comes to these machines, but I do own quite a few of them. I have rebuilt quite a few routers as the San Antonio power is funny and have had quite a few surges that have damaged the control boxes.

    This morning, took another look at the nonworking one. Now when I power on the VFD, the spindle will start a slow rotation which can be reversed by manually clicking the directional button on the vfd display, and the display just shows the number 5 which I am assuming is the rpm, but I have no clue. I have no idea what configuration it is setup for. With the 800kw VFD, i turn on the power, hit run button, and then use a dial to ramp up the speed. This one doesn't have that options as far I can tell. The spindle will stop rotating with the slightest pressure applied to it. I tried to used the spindle hotkey on mach to turn on or do something, but no go. I give it a m03 and m04 command with speed of 10000, no go. The VFD is wired into the entire control box. It runs off the same power supply as the stepper drivers. The steppers work flawless with no problems. The spindle and steppers both run off the same usb breakout card. I have uninstalled, reinstalled, reinstalled all the plug-ins that came with it. I have changed usb ports. I have changed no settings in mach. So I think I have it narrowed down to either the spindle or the VFD. When I manually spin the spindle, I do not feel any wiggle, wobble, hangups.

    I have basically given up. I will try and deal with the china company later, but I need a working spindle sooner than i can get one from china. The router currently uses MACH3 to turn on and off the spindle and I have not acquired the electrical knowledge on how to set that up, etc. It was plug and play. So if you have something that I can manually turn on from outside and at some point hook up all the fancy wiring at a later time, that would be awesome.

    So the current spindle is a gdz 80-1.5 80x188mm 110v 1.5kw 5A 24000RPM

    If you think it is a spindle issue, let me know, if you think it is a VFD issue let me know. I am open to watching videos and see if i can trouble shoot it myself. I just dont want to keep speding $500 on new spindles every 20 hours.

    Price is really not an issue , if you think it is a combo problem will be glad to take advice. I just need someone local to help me get running again sooner than later

    Click the link to respond:
    spindle not turning

  • I have theNema 24, 425 Oz stepper motors kit what are my Ports and Pins?

    The ports and pins are designated by the breakout board that you have, Now here are the schematics for both(https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay#prettyPhoto/2/ and https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/) Which for the Parallel the pins will be 1,14,2,3,4,5,6,7,8,9. For 1,14 you will need to use them together for a additional axis. Setup will be (ex.mach3) step in (2) / direction pin (3). continued for other pins, 4,5 6,7 etc.
    Now for the USB it has the label on the board right next to the terminal blocks, x-axis/etc.

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    I have theNema 24, 425 Oz stepper motors kit what are my Ports and Pins?

  • With the Mach3 USB board, my stepper motors are moving or spinning slowly.

    If your motors turn very slowly using your Mach3 USB board, then either the pulse from the board is being output at a slow rate or the motor drivers are set to a higher than expected microstepping:

    The Mach3 USB board outputs the pulse rather than the computer, but Mach3 controls this pulse frequency within the motor tuning section. First, determine if the travel distance is correct with the computer and the physical travel of the machine.

    If the travel is different, then your stepper motor driver's microstepping is incorrect, or the steps per inch/mm in the motor tuning within Mach3 is incorrect.

    If the travel is correct, then simply change the velocity and acceleration parameters to your desired level. If Mach3 will not achieve the velocity you desire, then decrease your stepper motor driver's microstepping setting, readjust the step per inch/mm in mach3 and readjust the acceleration and velocity to your desired levels.

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    With the Mach3 USB board, my stepper motors are moving or spinning slowly.

  • one of my motors from the blackfoot kit goes back and forth rather than turning, the wiring hasnt changed since i bought it, what could be wrong?

    The motor shaft does not turn, but slides back and forth in an axial motion? Please submit additional information on this page.

    Additional Information:
    it goes one step then the next step in the other direction so it seems to just vibrate

    Additional Information:
    It sounds like this could be a bad driver? You can determine if this is the cause by connecting another motor to this driver to see if it still happens to the new motor plugged into that driver. This will either rule out the motor causing this, or if it is the driver.

    You can also possibly rule out the driver as well if you change the step and direction wires from another driver to the problem driver.

    Make sure you do these steps one at a time. It's best to consider a single variable at a time.

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    one of my motors from the blackfoot kit goes back and forth rather than turning, the wiring hasnt changed since i bought it, what could be wrong?

  • Where are the datasheets for the stepper motors?

    You can find the datasheets to our motors be going to the the stepping motor category page https://www.buildyourcnc.com/category/nema and selecting the motor. This will bring you to the product page for the motor and all of the motor information will be found there.

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    Where are the datasheets for the stepper motors?

  • My x and y motors are on each end of my gantry do I wire each motor to the same XP

    I'm not sure what you mean by XP. Can you clarify? Thanks.

    All stepper motors must be wired to their own stepper motor driver. If two motors need to be driven by one signal (say there are two X motors) then the two drivers will be connected to same CP (pulse or step) and CW (direction) pins on the control interface. If the two motors need to turn in opposite directions, then swap the A and B coil connections.

    Additional Information:
    Whitch A+ or A - B + or B -

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    My x and y motors are on each end of my gantry do I wire each motor to the same XP

  • motors not working

    A Few Common Quick Solutions:.
    - Make sure that the breakout board is powered with 5 volts, (i.e. the USB is plugged in)
    - (If using Mach) Make sure that the jog on/off is enabled in Mach3.
    - The axis in motor output (config -> ports andpins -> motors output tab) should be set active low if the common is 5v (blue breakout, or small green breakout)

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    motors not working

  • motors not working

    The dip switches need to be set correctly.

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    motors not working

  • my motors seem to be loosing steps

    Sometimes the problem is just too much dust on the motors. Wood dust and grease can get pretty sticky over time. This is especially bad with lead screws as the dirt is collected inside the nut. Just clean the motors and guides, put some petrol on them to get rid of old, sticky oil, clean again and relube.

    I would look for worn bearings (or perhaps mounting bolts, or even a loose set screw on the motor couplings). You might even go to the extreme, of removing the motor coupling from the drive, and try turning the drive by hand. If you can't, then you have some type of binding issues in the mechanical drive on that axis. Again, look for worn bearings, etc. I once had this issue to appear on my Y axis, and discovered that it had been dragging a shattered bearing around (instead of it smoothly rolling along, as it was designed to do).

    This could also be caused be a loose sprocket appearing like the motor is loosing steps.

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    my motors seem to be loosing steps

  • MY MOTORS GET REALLY HOT TO THE TOUCH.

    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.

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    MY MOTORS GET REALLY HOT TO THE TOUCH.

  • got my stepper motors wired to the information on your website using USB Bob and the motors don't step they keep turning like an old drill until they stop

    So, if I understand correctly, the stepping motor will turn on command, but the motor will only turn in one direction. Check the output of your direction signal wire. Check the wire voltage when you command the motor to turn on one direction in the planet-cnc software. Then check the voltage when you command the motor to turn in the other direction. The voltage should be different in each case.

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    got my stepper motors wired to the information on your website using USB Bob and the motors don't step they keep turning like an old drill until they stop

  • What are the specs of the stepper motors on the BlueChick

    The blueChick uses NEMA 23 425 oz/in motors.

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    What are the specs of the stepper motors on the BlueChick

  • What brand and/or country of origin are the stepper motors?

    The stepping motors we sell are from China.

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    What brand and/or country of origin are the stepper motors?

  • what causes one of my x-axis motors to overheat.

    What can cause a stepper motor to overheat can be related to a few things. First, it good to know that stepper motors will normally be hot to the touch and you should not worry about this. There is a ton of current running through the coils of a stepper motor, and current will cause heat to build up.

    Energy comes in many basic forms: movement, heat and light. Stepper motors don't produce light, so we can rule that out, so you have movement and heat. When the stepper motor is not moving, the current is still trying to make sure the stepper motor is holding its position and since movement is not a factor here, heat will build up.

    If the heat worries you, you can keep the cnc machine moving, or turned off. There will still be heat when moving, but not all of the current is being used as heat. You can also consider lowering the allowable current draw using the stepper motor driver's dip switches.

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    what causes one of my x-axis motors to overheat.

  • Are the motors for the 5x suppose to operate at a high temperature?

    Yes, all of our stepper motors will run hot, depending on the way it is operated. Energy comes in a few forms, light, motion or heat. If the stepper motor is not moving, it is typically holding its position, which will cause the energy to transform to heat energy. If the stepper motor is holding a load, and is moving, it is drawing more current and the energy will be in the form of heat and motion.

    It is totally normal for stepper motors to be hot to the touch.

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    Are the motors for the 5x suppose to operate at a high temperature?

  • what are the shaft sizes on the motors in the heavy gantry electronics kit?

    The heavy gantry kit features 1 NEMA 34 651oz-in 1/2" Dual Shaft motor and 2 NEMA 24 425oz-in 1/4" Dual Shaft motors.

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    what are the shaft sizes on the motors in the heavy gantry electronics kit?

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