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Type: Posts; User: Jim Dawson

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  1. Replies
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    Re: StyleCNC STM1325-R1 Wiring questions

    I guess it's time to start tracing some wires.

    I guess first I would disconnect the motors from the terminals and see if the contactors pull in properly. That will tell the story if there is a...
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    Re: How do I stop it ?

    That would work fine.

    You would only need to connect the switch to the enable input.

    Are you sure you want to use a PWM controller? Normal for a stepper drive would be a stepper speed...
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    Re: slotted holes and bolts question

    I guess that would work OK. You would just screw that onto the ball screw, then use a jamb nut to secure.

    The alternative would be to thread the plate and just use a jamb nut to secure. The...
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    Re: slotted holes and bolts question

    I would use a threaded, clamp type shaft collar, and bolt that to the mounting plate.

    https://www.mcmaster.com/bolts/shaft-collars/threaded-shaft-collars/
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    Re: StyleCNC STM1325-R1 Wiring questions

    Let's clarify, on the left is a 2 pole breaker, to the right of that is a single pole breaker, then next to the right are 4 contactors (big relays) not breakers. I assume that one of these is...
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    Re: what's the non-wire?

    I see what you did there :D
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    Re: Need drawing to DXF file help

    My condolences for the loss of your sister.

    Do you have any idea what the font is? Looks something like an Old English or Old German font. Creating a DXF file is not a big problem once we know...
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    Re: 2.2KW motors x 4 (UK): URGENT help!

    Well the good news is that servo motors only use just enough power to do the task at hand. They draw very little power when idle. So average power is normally a very small fraction of rated power. ...
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    Re: 2.2KW motors x 4 (UK): URGENT help!

    Yes, about 25 amps max. The shop is fed with a 100 amp breaker off of my house main.

    The two points > 5kW is the air compressor added to the load. The other short spikes is just the power...
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    Re: 2.2KW motors x 4 (UK): URGENT help!

    Ahh, a very cool project. I would love to see some pictures if you would like to share.

    Just to put the expected power usage in perspective, Below is a graph of my shop power usage over the last...
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    Re: 2.2KW motors x 4 (UK): URGENT help!

    Yes, I think you will need to run a heavy cable to your garage.

    Out of curiosity what kind of machine are you running? 2.2kW is unusually large for axis motors on most machines one would find in...
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    Re: 2.2KW motors x 4 (UK): URGENT help!

    Yes, ''peak amps'' is under absolute maximum load. A very unusual condition in a properly sized system. For the most part, the servos will use a small fraction of their rated power except for brief...
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    Re: slotted holes and bolts question

    Once adjusted into to position and tightened, you could pin the plate to the frame. This is common in machine tool building to prevent lateral movement in assemblies.
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    Re: 2.2KW motors x 4 (UK): URGENT help!

    If the drives are rated for 220V single phase input, then no problem.
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    Re: what's the non-wire?

    It's called a filler. That is exactly what I does, it fills extra space in the cable.
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    Re: Prolight 3000 CNC Turning Center questions

    Ahh, those pictures help, makes sense now.

    Get a measurement from the cross slide to the spindle C/L, then a measurement from the edge of the box to the hub center and that will tell the story. I...
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    Re: Prolight 3000 CNC Turning Center questions

    It looks like the boxes are different sizes, but the motor to hub center lines looks to be the same on all of them. But without understanding the system as a whole it's a little difficult to say if...
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    Re: Prolight 3000 CNC Turning Center questions

    Not exactly sure what I'm looking at here, but it looks like the fixed part of the slot lines up with the centerline of the spindle and that's where I would expect the tool tip to be. I can't quite...
  19. Re: New to me partner 3 with some questions.

    I think you are correct, if it doesn't see the index pulse then it would keep hunting for it. My lathe comes up against the home switch, then reverses direction to the index pulse. But maybe your...
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    Re: ballscrew and gear reduction

    So the other moving parts of the system, like the carriage, don't count as moving mass?

    Thank you for playing, please try again.
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    Re: Looking for a Haas Super Mini Mill

    Yeah, I know the feeling. I went through the same thing when I was looking for my Haas. :)

    I found a few others that fit your needs on other sites. Just did a Google search.
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    Re: ballscrew and gear reduction

    Again on my old router, my cross axis had a 2525 ball screw, and a similar stepper, it had a timing belt drive with a 1:1 ratio. It sounds like you have plenty of torque available, so it's just a...
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    Re: ballscrew and gear reduction

    The motor torque is really the limiting factor. The position resolution is just a matter of steps (or micro-steps) per revolution. My old router had a 40mm x 40mm pitch ball screw with a 1.3:1...
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    Re: Looking for a Haas Super Mini Mill

    Here is one on eBay https://www.ebay.com/itm/114908134381?hash=item1ac10efbed:g:pCAAAOSwoyZg~0Hr
  25. Thread: Digitizing

    by Jim Dawson
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    Re: Digitizing

    I really don't see any easy way to do what you want. The problem is that you don't have any way to program your machine to output the data.

    Mach3 has some kind of plugin for probing/digitizing. ...
  26. Re: CNC Lathe - X AXIS "losing" POSITION

    If the turret is not traveling far enough then that would mean the the computer thinks that it got enough pulses to be in position, when it actually has not reached position and thus is seeing...
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    Re: NEED HELP WITH CNC LATHE

    The Acorn kit is fine, a good starting point. But you have a lot of engineering to do before you are ready for that.



    There are certainly many advantages to using servo motors, but there are...
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    Re: Lathe spindle encoder drive

    My spindle encoder is driven directly from the spindle at 1:1 using timing pullies and a belt.
  29. Thread: Digitizing

    by Jim Dawson
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    Re: Digitizing

    From what you have said it would seem that there is a probing routine in your machine software. There is a lot of software available to convert a point cloud to several different CAD type formats.
    ...
  30. Re: Need Help!How to control spindle orientation in a BL Super servo amplifier?

    It depends on how your machine controller works. Could be a prox sensor or encoder index pulse or possibly a combination of both. Normally all of the control is in the machine controller, the servo...
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