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Type: Posts; User: NIC 77

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  1. Re: Buy or make drill plates, stages or platforms to attach to linear bearing blocks?

    A tape measure, a square, a 0.5mm mechanical pencil, and a punch, that will get you close enough. The punch mark will help you align it when you use the drill press. Your drill press is accurate...
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    Re: Large Format 5-Axis Gantry Router

    I think what he means is that he would run it backwards. The weight symbol is where the 1/4 stroke pneumatic / hydraulic cylinder would be attached. He want's to run it the opposite way to what...
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    Re: Gantry mill for precise milling of aluminium

    There are gas struts, which are sealed units with an internal reservoir. These are the kinds of things you will see on the hatch for your minivan. Is this what you bought? If so, it doesn't have...
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    Re: Sources for Aluminum stock

    It depends on where you live as to which place is best.

    Generally, the foundries are all set up like clock work and organized into zones around America (the continent, not just the USA). Then...
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    Re: Feeback on cnc design

    My really nice Bosch Rexroth runner blocks also have a plastic strip you remove. They pretty much all do.



    Same thing that I meant.

    Although mine also have a synthetic cage for the actual...
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    Re: Large Format 5-Axis Gantry Router

    It's not funny. You could loose alot of money on this if you're not careful. LOL. I can laugh because it's not my money.:eek:



    I don't really know what you mean. What's a 1/4 length ram?
    ...
  7. Re: Spit-balling stage of 48x48(ish) wood router

    Just so you're aware, that stuff is available all over EBay and Aliexpress. You can also get custom end machining from those places. I think you should figure out exactly how you will mount your...
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    Re: Large Format 5-Axis Gantry Router

    Really ambitious project, is this your first build? I assume you have a bunch of machining, and CNC experience already? Is your design finalized?

    So for that length of travel and the performance...
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    Re: What kit do you need to run ATC spindles?

    I'm guessing most of them plug into the VFD and shut it down when there is an error.

    Some spindles have lots more pins than others. Sorry I can't be more help in this department.
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    Re: Cutting 1" thick aluminum on CNC

    I countersink holes in aluminum all the time this way on my hand operated mill, never had a problem, always peck drill them. Usually I have the hole already drilled that I am doing the countersink...
  11. Re: NYC area need a 2' X3' frame heat treated and machined flat

    I agree it couldn't hurt. I don't know if it will warp over time......I know it will warp if you cut it however if you're only removing a small amount of material from it, it should be fine. It...
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    Re: What kit do you need to run ATC spindles?

    Also, many of these spindles have lots of sensors that you will need to hook up to use with ATC. Try to find a manual with the pinout diagram for your spindle.

    I plan on using mine as a quick...
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    Re: What kit do you need to run ATC spindles?

    Is this a single phase spindle?

    220V x 24A = 5280 Watts

    3800 / 5280 = 72% efficient, so that actually makes sense. Also, higher quality spindles will usually be able to output more power than...
  14. Re: NYC area need a 2' X3' frame heat treated and machined flat

    Have you built this already?

    I have heard people talk about stress relieving a welded part prior to machining. Personally, I'm not certain it will provide much value. The amount of material you...
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    Re: Cutting 1" thick aluminum on CNC

    OK, so you're not hogging it out, the 1" piece, you're making holes?

    Peck drill them. Using a drill bit. Then finish on a drill press with the exact bit size (assuming you don't have a collet...
  16. Re: best method for interfacing linear square rail to 80/20 framing?

    Hmmm, perhaps I should get one. The finish I get is not very good, but I do clean it up on my mill.
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    Re: Gantry mill for precise milling of aluminium

    OK, that's just awesome.

    I don't claim to understand all what you've done, but awesome it is.

    So those clamps slide in the T-slot and are hooked up to pneumatic cylinders. I had to look at it...
  18. Re: Finally a way of using cheap 380v motors for DIY builds?

    Thank you for your feedback to my questions.

    I believe that it depends on the power vs speed graph for the motor, for example I went to the HSD website and pulled the spec sheet for two spindles...
  19. Thread: art cam

    by NIC 77
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    Re: art cam

    The same way I learned how to gut a deer. YouTube.

    You're welcome.
  20. Re: Finally a way of using cheap 380v motors for DIY builds?

    Obviously you can not break the laws of physics. Unless you're batman. Then it may be possible, but only on full moon lit nights.



    $400 for a good used ATC spindle? Hmmm, tell me more.
    ...
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    Re: CNC Purchase coming soon

    At first I was thinking good price for a machine with all that.

    Then I looked into it. Yeah, that machine sucks. Sorry. Sometimes it is only a matter of meeting your expectations for your...
  22. Re: CNC Lathe/Mill Training for Grad Students

    So you are asking for advice on how to train a group of people not only to be able to program and operate a CNC mill and lathe in one week (part time even) without access to all of them even being...
  23. Re: More torque needed for motors, but how?! Any ideas to solve this?

    Here's a thread for you to read, Dalton,

    http://www.cnczone.com/forums/general-cnc-machine-related-electronics/110986-software-74.html

    Looks like those drivers are limited to 36V max.
  24. Re: More torque needed for motors, but how?! Any ideas to solve this?

    You haven't provided enough information. I hate having to try to look up the info for people. You look it up and provide it please.

    Torque vs speed graph for the steppers using that voltage of...
  25. Thread: Calculating IPM

    by NIC 77
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    Re: Calculating IPM

    During the past year I have gotten into the math, including inertia effects.

    http://www.cnczone.com/forums/linear-and-rotary-motion/338118-cnc-3.html

    Graph in post #5 and a sample calculation...
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