Messages

1

General Mach Discussion / Re: Taig Mill Questions

« on: March 16, 2018, 06:45:48 PM »

Hi,
   I've recently posted about having issues with the inline fuse in the control box on my taig mill. After trying slow blow fuses in place of regular fuses, I have eliminated my problem of the fuse blowing in this place.
Now, I am having issues with the main 2a fuse. I have discovered after trying different things that the main 2a fuse only blows when any of the stepper motors are plugged into the x-axis port on the machine. The x, y, and z stepper motors can be plugged into either the z or y axis and work properly, but once you plug a motor into the x axis the main fuse instantly blows. Does anyone have any suggestions on why this could be?

2

General Mach Discussion / Re: Taig Mill Questions

« on: February 26, 2018, 09:38:32 PM »

I'm sorry if you have seen this post before under a different topic, but I realized that this post is more relevant under this topic....

I have been struggling with getting my Taig MicroProto mill running reliably. It seems that every time I go to use the mill, new problems arise. The first time that I was able to get the unit running, it worked great for about a day. The next time that I went to use the mill, I noticed that the inline fuse in the controll box failed each time I turned on the machine. I thought this might suggest a short somewhere in the circuit, but after having someone with an electrical background look at it, we couldn’t see anything that was wrong. Does anyone know why this is happening every time I turn on the machine? Is this a voltage issue? I tried adjusting the potentiometer but nothing seems to make a difference. Could the motors be bad and causing a short?

3

General Mach Discussion / Re: unit issues.

« on: February 25, 2018, 09:01:24 PM »

I have been struggling with getting my Taig MicroProto mill running reliably. It seems that every time I go to use the mill, new problems arise. The first time that I was able to get the unit running, it worked great for about a day. The next time that I went to use the mill, I noticed that the inline fuse in the controll box failed each time I turned on the machine. I thought this might suggest a short somewhere in the circuit, but after having someone with an electrical background look at it, we couldn’t see anything that was wrong. Does anyone know why this is happening every time I turn on the machine? Is this a voltage issue? I tried adjusting the potentiometer but nothing seems to make a difference. Could the motors be bad and causing a short?

4

General Mach Discussion / Re: Steppers have no torque.

« on: February 03, 2018, 07:29:27 PM »

Hello Craig,
           I appreciate your suggestions about the stepper drivers. I will attach some pictures of the stepper motors and drivers below. I'm sorry if the pictures arnt exactly clear, but i hope they can give you some idea of what I am running. Also, I do have access to an oscilloscope and someone who knows how to use it. If you think that my issue can be troubleshooted through testing the drivers, It would be helpful if you could provide some information on how I would go about testing the drivers. To be honest with you, I didn't even know what the drivers were until I did a quick Google search, so any details on how I would test the drivers would be greatly appreciated. Thanks again!

5

General Mach Discussion / Re: Steppers have no torque.

« on: February 02, 2018, 11:01:44 PM »

Hi,
    My name is Anthony, I am new to the forum and new to the CNC world. I acquired a taig 2027 CNC micro mill to serve as a learning tool for me to gradually lead into the CNC and machining trade. After buying the Mach 3 software and the necessary adapter board to finally get this older mps 2000 controller running and communicating with the computer, I was finally able to get my machine running. After a few test programs, I noticed that my stepper motors were stalling while in jog mode. I tried motor tuning, loosening the gibs on all axes, and adjusting the motor couplers but nothing seemed to work. After doing some research, I realized that resonance is a possible issue, so I decided to completely take the motors off the machine to see if this was the case. When I removed the motors and tried to jog them, they instantly stalled. It seems to me that there is absolutely no torque given out by the motors and all they do is hum. I know for a fact that the motors are not bad because I ran a few programs before and everything seemed to work out fine.

 Basically, I have been at this now for the last couple weeks and I am not sure exactly what I should do. I would really appreciate if someone could steer me in the right direction as to what my next move should be. If my issue is truelly a resonance problem, I would appreciate if someone could tell me where I need to measure the current and voltage from so that it is set correctly. Any suggestions would be greatly appreciated as my frustration with this machine has reached its highest point. I hope to see some chips flying soon! Thanks.