Sounds of machines

[bunalmis]

Hello all,

Wjbzone uses stepper motor at own cnc and
Balsaman uses DC servo motor at own cnc.

I am great interesting sound(noise) of this two machines.

If possible for this purpose;

1. dont run the spindle motor.
2. Draw circle at air with your machine (5" radius)

Can you make sound wave file while machine work at this conditions?
Can you post this wave files this group?

[wjbzone]

I've listened to that on my steppers. The pitch goes from low to high on each motor. Sounds cool.

I'll have to find my microphone to record it.

How does the servo sound differ?

Bill

[balsaman]

Mine makes a very quiet whine. Much quieter than the full step steppers on my other machine. I am not sure you would pick it up with a microphone.

Eric

[bunalmis]

I think DC servo motor must very slient.

I used stepper motor at the my hoby cnc and i used microstep.
I dont hear any noise at the Microstep operations, But microstep reduce the axis speeds. Now I will use DC motor instead of step motors. (and i will change the controller)

I want to listen your machine's sound becouse,

I didnt see any other hoby cnc and i want to compare some properties.

[balsaman]

I am on vacation right now. I will try and record it when I get home again.

Eric

[Sanghera]

Do steppers vibrate when they are standing still, and make a little whistling shhhhhhh noise? Is this normal? Are steppers meant to hold still for long periods of time?
Thanks.

[bunalmis]

Do steppers vibrate when they are standing still, and make a little whistling shhhhhhh noise? Is this normal? Are steppers meant to hold still for long periods of time?

I think this sound is not normal. I remember this noise at the my firts L297/L298 driver. I dont like this sound but not problem for the step motors.
This sound source must be wrong calibrated chopper drivers.(motor current has noise)

My step motor work with my last driver and completely slient.

Some times i forget to shutting off my cnc and next day i notice. I dont hear any noise but step motor and driver temprature increase.

[Sanghera]

I have the Xylotex driver, and I changed it to full step. Even if not connected to the parallel port it makes a shhhhhhhh noise on every motor. I have the voltage set at 2.88V which is 2 amps for each motor. The motor's max I think is 2.07. Is this just too close to the max amperage for these motors?
Thanks.

[bunalmis]

You can work near the current settings limits this is not problem. Also you can use 4A step motor by 3A driver. Driver limits the current at the 3A.

You can change the voltage of driver. Forexample if you use 24v try 18V or 26V. What happen you can see?

Did you ask to manufacturer for this problem?

[Sanghera]

Ok, I may try 12 volts then. But what does normal operating sound like, just like a normal electric motor, is there any vibration normally?
Thanks.

[bunalmis]

If acoustic noise not problem for you. You can use your driver and step motor, this is not problem for driver or step motor. (Some electrical and iron loss may be increase but completely negligible)

(This sounds problem for me. I dont want to hear)

[Sanghera]

So, your saying that I should just try the board and motor, and the noise shouldn't be a problem performance wise. It won't deteriorate the moter or board slowly with the wrong settings? Also, what do you mea iron loss?
Thanks for the input.