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Type: Posts; User: Jim Dawson

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  1. Replies
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    Re: Laser cutting while in motion

    I would try Plan A, +/- 2mm is a pretty wide tolerance. Just moving the cloth with a stepper should be able to hold that easily.
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    Re: New spindle motor - Servo or Induction?

    Peak torque is just that and the motor won't run for long in that range. Peak torque on your 2 HP motor is in the 20 Nm range. My 3 HP on my knee mill pretty much runs out of torque when tapping...
  3. Thread: Need Help

    by Jim Dawson
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    Re: Need Help

    The bottom of the insert should never see the material. I'm a bit confused here, are you saying that the the wear is on the bottom of the insert, the part next to the insert holder rather than the...
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    Re: Laser cutting while in motion

    I assume the end goal is to have the laser cut centered on the attachment or at least relative to the attachment position. If registration is that critical, then locating the attachment with a...
  5. Thread: Need Help

    by Jim Dawson
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    Re: Need Help

    Is your tool height correct? Normally wear on the bottom would mean the tool is way too high.
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    Re: New spindle motor - Servo or Induction?

    I think you would be very disappointed with the performance of that motor for your application. Your current motor develops about 8Nm base torque, the base torque of the motor in the link is 0.5 Nm...
  7. Re: UPS battery backup - general question

    The normal way it is done is to have all motion stop on power fail, much like pressing the E-stop switch, even on a very brief power fail. In other words it drops out the control power relay (which...
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    Re: Buying stock for 5c collets

    Looking forward to the videos :)
  9. Re: UPS battery backup - general question

    Something like this would keep you running at full power for a few minutes, I don't see a full load run time spec'd. It would keep the computer up for a few hours once the router and controls are...
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    Re: Buying stock for 5c collets

    There really isn't any downside. No problem boring your own, the ones I have done machine very nicely. One note, the only time a collet (or chuck for that matter) needs to be perfectly concentric...
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    Re: Laser cutting while in motion

    Sounds like a good plan. It might require an encoder reading the cloth speed to coordinate the timing, but it should work.
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    Re: Laser cutting while in motion

    If you look at it mathematically, I think the path described by the laser would be a rotated ellipse, the parameters of which would change with the speed of the cloth through the machine. An Excel...
  13. Re: Grizzly G0765 lathe and HDPE Rod turning?

    For soft materials normally a high shear angles are prefered. Think knife blade rather than cold chisel. A generous nose radius is helpful also. Experiment a bit and see what works best for you.
  14. Re: Wiring new controllers and the other things!

    I could disappear also, I'm 70 :) There are a lot of experienced folks on here that can help you get going.

    EDIT: I should note that since that machine will be operated in an...
  15. Re: Wiring new controllers and the other things!

    The good news is that the Anaheim Automation motors are well documented. Looks like they are 6 lead motors. ...
  16. Re: Wiring new controllers and the other things!

    Well, 120V AC goes to the AC terminals on the drives. PE terminal goes to ground.
    120V AC goes to the 24V power supply also.
    Not sure the 5V power supply is needed, depends on which board you have....
  17. Re: Wiring new controllers and the other things!

    The stepper drives are fine, assuming the motors are compatible. Maybe you could get the information off of the data tag on the motors if it exists.

    The stepper drives require a step (Pul) and...
  18. Re: Wiring new controllers and the other things!

    It looks like you have stepper drives there, so I assume stepper motors also. I understand that the Porter Cable router motors will be just on and off but how are you controlling the stepper drives?
  19. Re: Wiring new controllers and the other things!

    First draw a diagram of what you are going to do. Look at the manuals from Automation Technologies, that would be a good starting point. Are you using the original router controller and software? ...
  20. Re: Any masters at editing with notepad++?

    I sent you a present, check your PMs :)
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    Re: Burnt winding in a servo

    Sometime motor windings fail. Maybe a small manufacturing defect or a voltage spike. Maybe the motor was overloaded for some time and got too hot causing the winding insulation to weaken. This...
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    Re: G4 dwell only in seconds

    Would it accept an input of 0.25 seconds?
  23. Re: Tapping auto reverse attachment for CNC router with DSP keypad

    It would be possible if you have enough torque at that speed. You'll have to look at the maximum allowed speed on the tapping head you choose. I don't think I have ever run one faster than about...
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    Re: 4x8 bandsaw oil

    OK, use pure 140 wt mineral oil. GL1
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    Re: 4x8 bandsaw oil

    According to the HF manual, use 140 wt gear oil.

    https://manuals.harborfreight.com/manuals/93000-93999/93762.pdf
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