537,713 active members*
3,179 visitors online*
Register for free
Login

Search:

Type: Posts; User: Jim Dawson

Page 1 of 17 1 2 3 4

Search: Search took 0.03 seconds; generated 8 minute(s) ago.

  1. Re: Need help with designing and building a CNC machine

    Caesar,

    I really want to encourage you to do this project. Having an end goal makes learning the skills to do it much easier because you have a good reason to learn a particular skill, if nothing...
  2. Re: Need help with designing and building a CNC machine

    Having worked in the industry for many years I can assure you that such a machine exists. Insert wood into one end and out comes a house kit on the other end, floors, walls, and trusses, ready to...
  3. Thread: fanuc motor

    by Jim Dawson
    Replies
    3
    Views
    31

    Re: fanuc motor

    If not already equipped, you could install ''shot pin'' indexing on the spindle for tool changing.

    This would be a pin that enters a slot, pushed in by a small air cylinder. Rotate at very low...
  4. Replies
    7
    Views
    30

    Re: Spindle rpm 8000-24000?

    I don't see a problem driving a belt system. The bearings in the spindle are more than robust enough to handle the radial loading from the belt drive.
  5. Re: Precision Matthews Alternative vendor?

    Here is one you might look at. https://indianapolis.craigslist.org/bfs/d/indianapolis-emco-cnc-pc-50-mill/7280639820.html The EMCO machines are very high quality.
  6. Replies
    8
    Views
    44

    Re: Moving gantry conundrum

    Put a linear encoder on each side, read the actual position, and take the ball screws out of the equation.
  7. Replies
    7
    Views
    30

    Re: Spindle rpm 8000-24000?

    If you want to spend the $$$$ you can get spindles that will run 0-24,000 RPM, but you are not going to find them on Amazon. I have one that will do it, 12KW I think. (not for sale) Several thousand...
  8. Thread: fanuc motor

    by Jim Dawson
    Replies
    3
    Views
    31

    Re: fanuc motor

    I'm using a Automation Direct GS3 drive on mine, but any properly rated sensorless vector VFD will run the motor. But you will lose indexing capability if you use a VFD. And I would guess that a...
  9. Replies
    8
    Views
    49

    Re: What's wrong with this AC Servo?

    Very insightful and helpful mactec54. Thank you for posting that.
  10. Replies
    8
    Views
    49

    Re: What's wrong with this AC Servo?

    You may have to do some adjusting, maybe set to factory defaults or something before autotuning. I don't know what adjustments are available in those units.
  11. Replies
    8
    Views
    49

    Re: What's wrong with this AC Servo?

    It almost sounds like the gain is set to high. Maybe try auto tuning and see if that fixes it.
  12. Replies
    12
    Views
    47

    Re: Soliciting advice for unusual build

    Just to make the math easy, let's assume a 100x100 matrix of shafts.

    Then let the X axis have 100 positions, and the Y axis consists of 100 tiny steppers, each driving a tiny lead screw. Each...
  13. Re: Is anyone using a mini-computer for the CNC?

    I like the price and compactness of the mini computers. I have used them in industrial environments, one installed in a customer machine and another in my press brake. I also have another on my...
  14. Replies
    1
    Views
    14

    Re: haas vf2 proximity sensors problem

    Sounds like the 24V common (return) was a bit cruddy at the connector. Not an uncommon problem for many machines. Normally unplugging and reseating is the correct action.
  15. Replies
    3
    Views
    62

    Re: How to write text in single line

    I think you would need to change the font in the drawing file.
  16. Re: left handed tools in the lathe turret?

    My pleasure.

    After running manual lathes for 50 years it took me a bit to look at the world upside down in a CNC turret lathe. Then it finally dawned on me that the carriage was just rotated...
  17. Re: left handed tools in the lathe turret?

    My lathe is set up for 20mm also, but I just use shims and 3/4 shank holders. I went to Harbor Freight and picked up a half dozen feeler gauge sets to have a nice shim assortment. Works great.

    I...
  18. Re: left handed tools in the lathe turret?

    Yup, right hand tools. But depending on the part and setup, I sometimes use left hand tools if I want to come in on a back face or something like that. But for most turning; right hand.
  19. Replies
    3
    Views
    62

    Re: How to write text in single line

    .shx files are single line font.
  20. Replies
    5
    Views
    46

    Re: what does this do?

    Looks like it adjusts the end play on the support bearing.
  21. Re: Replacing Yaskawa 626MTIII with something newer on Tree J325?

    Looks like this one would work. ...
  22. Re: Replacing Yaskawa 626MTIII with something newer on Tree J325?

    The motor is about the last thing that I would expect to fail. More likely the encoder or the drive.

    Just about any modern VFD would be fine as long as you get one rated for single phase input,...
  23. Re: Replacing Yaskawa 626MTIII with something newer on Tree J325?

    The spindle motor/drive looks fine, certainly cheap. But I know nothing about the Delta 20 system.
  24. Re: Replacing Yaskawa 626MTIII with something newer on Tree J325?

    Depending on the motor, you might be able to run it on a VFD. That's how I'm running my Fanuc spindle.

    Indexing for a tool changer might be an issue.
  25. Replies
    1
    Views
    29

    Re: turret fanuc o-t

    Check the prox sensors. Most likely under a cover on the main housing.
  26. Re: Cutting stainless steel electrical enclosures

    Ok, so you are working with panel meter size, NEMA rated enclosures. Now I understand.

    I'm still going to go with punching, but using a power press. The power press could be a press brake, a...
  27. Replies
    2
    Views
    57

    Re: Incorporating Switch into CNC Code

    Maybe use M1 (optional stop) or M0 (program pause), then wait for the input to trigger before proceeding.

    Not sure if this will work in Mach3, but worth looking at.
  28. Replies
    11
    Views
    60

    Re: An easy one, g54

    Happy I could help :cheers:
  29. Re: Cutting stainless steel electrical enclosures

    Is the company an enclosure manufacturer or a machine/panel builder? You would approach the problem differently for each.
  30. Replies
    18
    Views
    110

    Re: Help understanding how real life works

    At least the little 4 (5?) axis machine kind of looks like a milling machine rather than a router.
Results 1 to 30 of 488
Page 1 of 17 1 2 3 4