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Author Topic: Good or bad stepper motor?  (Read 2762 times)

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Good or bad stepper motor?
« on: April 14, 2007, 03:58:25 PM »
 I have finally got my machine working and cutting good. But there may be a problem with my motors.
140oz stepper 8 wire, Hobby cnc board.

At very low speeds you can here the motor turn its steps. Y axis seems louder that the X axis. The X gantry is built in steel but the Y is built in timber (main frame). I was thinking that is because ones set in timber and the others steel. So I removed the motors and held the to together on a board. Ran Mach3 then ran each motor at low speed. Doing about 20 rpm the vibration on one motor is twice as loud as the other.
Every thing is set the same for both motors.

Is this normal or do I have a doggy motor?
Cutting is fine at the moment.


Offline Chip

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Re: Good or bad stepper motor?
« Reply #1 on: April 14, 2007, 04:16:07 PM »
Hi, Roger

Re-check motor wiring, swap motors around, Dose the motor in question still vibrate ?, Could also be the control board.

Check It,Chip

Offline Chaoticone

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Re: Good or bad stepper motor?
« Reply #2 on: April 14, 2007, 08:38:00 PM »
Hey Roger,
    Do your drives have tuning pots. My geckos do. Your are supposed to jog at 1/4 IPM and tune to the smoothest you can get at that.

;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!
Re: Good or bad stepper motor?
« Reply #3 on: April 15, 2007, 02:09:55 AM »
I will try all this in a few days, but first the wife wants a room painted. Now the problems start.
I will also post this on hobby cnc forum. The board is a HOBBY CNC 4AUPC.
No tuning post.
Get back in a few days