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Type: Posts; User: machinedude

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  1. Replies
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    Re: Trouble cutting circles

    this is just reaching at straws here. but typically when when climb milling the cutter tends to want to climb up over the cut and on a manual machine you tend to avoid climb milling all together....
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    Re: Trouble cutting circles

    the thing you need to keep in mind is when your cutting circles you are actually cutting 4 sections of the circle so every 90 degrees your going to notice the transition to the next segment of the...
  3. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    would be odd if they were separate drives but since it's all in one i would say it's a good possibility so you can't rule it out. i've seen them act weird just from getting to warm so having them...
  4. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    mach 3 has it's limits based on the PC it's hooked up too as well. could run the the driver test at some different pulse rates to check your system on that end.
  5. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    then if i was to replace the drives i would find something that would be the max. of what the motors can handle. i would think they could do a 48 V supply but that needs to be confirmed in the...
  6. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    if you have only ran 24 V systems you would be surprised at how much better steppers do the more you up the voltage. i realize you have limits with this set up and your hands are tied it's just worth...
  7. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    maybe try disconnecting all but one motor and drive on the worst axis and test just one hooked up to see if it makes things any better. if it does then this could be the problem. simple test and it...
  8. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    since the design is so bad on the mechanical side i would not be surprised if the electrical side of this is not just as bad. if you have a undersized power supply running all the motor's it will...
  9. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    24 V for power is garbage too the better stepper motors can run on 80V and usually run on a 70 V supply. how many power supplies are on the controller?
  10. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    i'm pretty sure the current of the drive need to match the motor's. gecko's use dip switches but also have the adjustment pot. you might need to pull the cover off the drive to find it if it has one?...
  11. Re: DIY Mogul CNC x y z motors issues TB6560 controller/driver

    could see if you are able to tune the drive's? they usually have some kind of trim pot for adjustment. if the motor's sound bad then this might smooth things out. just google it and you get all...
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    Re: Reducing backlash in timing belts

    there are a few different series of timing belts and pulley's the GT series seem to do the best with backlash from what i have seen in the documentation. the HTD series are good too just not as good....
  13. Re: Need help tuning/setup i think ? Semi neewbie with new machine

    the motor winding's are actually color coded if those are the same motors being used.so you don't even need a meter with the posted diagram.
  14. Re: Need help tuning/setup i think ? Semi neewbie with new machine

    one other thing i noticed is i don't see anything for a supply 5V for the logic so my guess is that would be picked up from the computer through the USB taking another guess? sometimes you don't...
  15. Re: Need help tuning/setup i think ? Semi neewbie with new machine

    it looks like a chopper drive so i would do some digging on that key word to see if you can gain some insight on how they are wired. if the motors are bipolar with 4 wires those look pretty straight...
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    Re: Designing a new router called Brevis-HD

    i used the same casters on my machine so far they work well for the task. but mine were the next size up with the higher weight rating.
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    Re: CNC leaves mark on the initial move

    one other thing to try is rather than plunging into the part use a ramping tool path. you have a lot more control over the load on the tool with this kind of tool path.
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    Re: CNC leaves mark on the initial move

    one other thing is when you are contouring you can extend your tool path past the end point too this will help with gouging also and blend things better. i would work on using lead in and lead outs...
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    Re: Where to buy 80/20 fasteners

    try this place their stuff works with 80/20 stuff.

    https://www.tnutz.com/
  20. Re: Medium sized CNC Mill/Router - Some specific questions

    looks like the legs are a lot better and the design you have now looks like a lot more of what you see the majority doing. i'm not in the majority but the guy paying the bills for the build has the...
  21. Re: Medium sized CNC Mill/Router - Some specific questions

    just a thought but how well does the squaring of the gantry work when the gantry is solid enough to stall a stepper. i have zero experience with that part and was curious ? usually you don't see the...
  22. Re: Medium sized CNC Mill/Router - Some specific questions

    personally i think and kind of sand mix will do fine. some have got fancy with their fillers but any cheap solution will do well. the good thing about the epoxy is it only shrinks about .001 and has...
  23. Re: Medium sized CNC Mill/Router - Some specific questions

    typically metal working machines are built from cast iron because it dampens vibrations. steel tubing is rigid but does not dampen much and the same goes for aluminum extrusion in dampening aspect...
  24. Re: Medium sized CNC Mill/Router - Some specific questions

    your table is not so big like you said i was thinking more support on the legs since the tale looks tall. if you cut aluminum the vibrations will resonate through out. and the lighter the frame the...
  25. Re: Do steppers draw a lot of current stopping and starting? And more.

    best to stick within what the motor is rated at voltage wise. they run a lot better running at the edge of the rating. i have smaller ones and larger ones that are rated for 80 V and have a 70 V...
  26. Re: Medium sized CNC Mill/Router - Some specific questions

    yeah my gantry is pretty beefy and my uprights started at 1.25 thick but they ended up at 1 3/16 after i machined them flat. i don't have trouble with things moving around to much. the biggest thing...
  27. Re: Medium sized CNC Mill/Router - Some specific questions

    your gantry is pretty light compared to what i built. mine is around 300 lbs and i have the central drive with a Nema 34 stepper currently driving it and i don't see any issues with what i have but i...
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    Re: bolt frame build

    i did manage to order some magnetic scales and reader heads for this project. was a bit of a challenge getting past the language barrier :) translators seem to complicate things :) but at least the...
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    Re: Use laser to align XY axis

    could not really tell from the picture but since they are you have it covered already. just wanted to point that out in case they were not. like you said you don't want to have to tear the machine...
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    Re: Use laser to align XY axis

    i think your slots should be arcs rather than straight if you want a lot of movement. it looked like they were straight slots at a quick glance? thought i seen some flat head bolts with counter sinks...
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