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Type: Posts; User: blau_schuh

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  1. Re: New Build Consideration - Direct Drive or Pulley

    I think gt2, xl, or HTD would fit the bill as the pitches are close (3mm to 5mm), I'd stay away from "L"... i actually think I've got an XL or HTD on one of my axis on my new machine.

    I think you...
  2. Re: 2.2kW water cooled spindle is getting warm

    Define "warm"... What's the actual temperature?

    What size reservoir do you have?

    Also, IMO that pump is fine. 600LPH/150GPH seems to be plenty... do you even have a single gallon in your entire...
  3. Re: New Build Consideration - Direct Drive or Pulley

    I used GT2 belts on one of my machines, and in the current one I am building. Never had an issue...

    My first machine used dinky little (~50 oz-in cont. ?) DC servo motors and using a pulleys let...
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    Re: 3'x3' machine build

    Looking good... fire it up!
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    Re: Advice on 600x1200 heavy-duty router build

    Wow 2200ipm. Holy smokes!

    I was limited to ~866ipm because the servo max rpm is around 2500rpm and i had 1:1 gearing. Had I tossed in a 1:3 pulley I'd be up around 2500ipm. Pretty sure the...
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    Re: Advice on 600x1200 heavy-duty router build

    Have you though about used Yaskawa or Mitsubishi AC servos? Probably can piece together the bits for cheap if you're willing to poke around on ebay a bit (got a bunch of mine from china). Took about...
  7. Re: Need advise/opinion for 8020 based gantry (planning my first build)

    ahh i see now...

    I assumed a worst case point load with each 3060 length taking the whole load of the gantry and it came out under a thou and i was happy. Sounds like your gantry width is similar...
  8. Re: Need advise/opinion for 8020 based gantry (planning my first build)

    Have you downloaded the 8020 deflection tool yet? You may want to play around with it...

    I think your 3060 single rail is going to deflect quite a bit at that length, may not matter with what...
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    Re: 8020 6'x4' CNC router

    Haven't spent a ton of time on the machine lately.. Managed to use some 1/4" thick plates to make some temporary mock-up gantry supports this weekend, and get the linear actuator mounted. Right now I...
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    Re: Suggestions for cnc table height

    thanks all... think i'm going to drop it a few inches.
  11. Replies
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    Suggestions for cnc table height

    Wondering if some of you could share your cutting surface height on your cnc machines?

    I just finished bolting together the main frame for my 8020 cnc, and it feels a bit high at 40". My last...
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    Re: 80/20 and Steel Gantry Router Build

    1" thick... and then braced? Don't you think that's overkill? :D

    I played around with an online deflection calc for a 24" long , 10" wide, 0.75" thick cantilevered beam with arbitrary 50 lb point...
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    Re: 80/20 and Steel Gantry Router Build

    What thickness plate are you going to use for your gantry uprights?

    I ask, because I am going back and forth between 1/2 and 3/4". I'm figuring I'll need a 12x36x piece and the weight diff is 52lb...
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    Re: 8020 6'x4' CNC router

    Ill try them out... seems about half the price on some stuff as the 8020 ebay store.
  15. Re: Anyone out there successful driving a gantry from one side with a single screw/mo

    I wanted to avoid buying more screws oh well.. I have some pretty nice high quality star screws sitting in the basement I wanted to try. I may try it just for kicks since the 8020 allows for such...
  16. Re: Anyone out there successful driving a gantry from one side with a single screw/mo

    I didn't have any perceptible issues with my previous small machine (~3.5' x 2' cutting envelope). Center driven ballscrew, 4' HSR35 linear rails (smaller trucks than current rails). 8020 3030 frame...
  17. Re: Anyone out there successful driving a gantry from one side with a single screw/mo

    The rails and trucks in question...
    248994

    As I understand it (explained pretty badly): Racking is where the far side of the gantry momentarily (and maybe even continually in the worst case) lags...
  18. Re: Eric's 3-axis machine from scrap and scavenged parts

    Can you upload the pics? They aren't showing up for me.
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    Re: 8020 6'x4' CNC router

    Hey, thanks for the input.

    I'm trying to make the rigidity of the main 3060 frame independent of the legs. I'm thinking of using 6"hx10"wide pieces of 3/4" aluminum plate to tie the ends...
  20. Re: Anyone out there successful driving a gantry from one side with a single screw/mo

    Hi Al,

    Not considering rack and pinion as I already have a variety of ballscrews on hand and I wanted to play around with a nut driven big ballscrew. Although I may at some point (be forced to?)...
  21. Anyone out there successful driving a gantry from one side with a single screw/motor?

    I'm building (what hopefully will be) a pretty solid and rigid gantry-type cnc machine out of 80/20.

    The gantry will ride on overkill THK HSR35 rails.

    I would like to experiment with mounting...
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    Re: 8020 6'x4' CNC router

    Not much of an update. I swapped the and did some more hole tapping. I now have almost the exact width I need for the gantry.

    Not sure about keeping the rails in that 2nd from the top slot, may...
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    Re: 8020 6'x4' CNC router

    That's actually a REALLY good idea. like u said, would allow a fine width adjustment (tap-tap-tap) rather than having to mill/shave down spacers if i don't cut everything just right. I'm hoping the...
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    8020 6'x4' CNC router

    Just started putting together an 8020 router for wood, aluminum, etc.

    Was hoping for around a 40"x60"x8" cutting envelope. Probably will end up with 36ish" x 50-somethin' x 8" which is plenty...
  25. Re: Mitsubishi AC servo motor 9 pin encoder connectors... Where to buy them?

    Think I found 'em

    Service Unavailable

    minimum order 2800 :)
  26. Re: Mitsubishi AC servo motor 9 pin encoder connectors... Where to buy them?

    dont see one...

    233360
  27. Mitsubishi AC servo motor 9 pin encoder connectors... Where to buy them?

    Have a few motors with cut wires and am looking for the 9 pin, square encoder connectors for motors in the HC-MFS43 family of ac servo motors.
    The connectors say "AMP" on them, but haven't been able...
  28. Woffler, Do you actually have the DMM hardware...

    Woffler,
    Do you actually have the DMM hardware in your possession?

    not sure what you mean by "step angle". I did run across some settings that someone was using.

    I never got a response for my...
  29. LinuxCnc "Step Time" "Step Space" "Direction Hold" "Direction Setup" values??

    What values are you folks using, and where did you get them?

    I've searched and searched and wasn't able to find the setting anywhere on various forums.

    Thanks
    Scott
  30. It turns out that I can actually configure the...

    It turns out that I can actually configure the servo drive/motor to act look it has 2000 count encoder. This should get me close to the speeds I want.
    Even with the 2000 count encoder with a 5mm or...
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