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Type: Posts; User: QuinnSjoblom

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  1. I'll try it out, good to know I can check the...

    I'll try it out, good to know I can check the actual value like that.

    I wonder if I can actually use this to allow the use of equals. I can format A2 as only 2 or 3 decimal places, then use it in...
  2. Re: "equal to" operator not working in script

    i bet thats exactly what it is. I forgot mach3 is using something like 12 decimal places even though only 4 are displayed. since my steps per degree is 45.51111111111, 90 degrees is going to round to...
  3. "equal to" operator not working in script

    Im working on a macro for fine tuning my A axis index points of 0, 90,180, 270. basically it accounts for pulley variation and encoder error. After the A axis is commanded to a position, the...
  4. That one will be quite a ways down the road for...

    That one will be quite a ways down the road for many reasons. First of all funds, also need a real shop space, also have a lot to learn in programming to make this work the way I want. Mach3 isn't...
  5. Yep, at one point one of my revisions for the...

    Yep, at one point one of my revisions for the mill turn spindle was direct drive coupling. I finished the parts for that version, but before I could finish building it, a smoking deal on a dunham...
  6. I'll have to check out those controllers. I'm not...

    I'll have to check out those controllers. I'm not sure how much work I'm gonna put into this machine. I'm already working on plans for a new, much more capable machine. Very similar to the layout of...
  7. Ah ok, yeah right after I typed that I realized...

    Ah ok, yeah right after I typed that I realized you probably aren't running step mode. So your controller reads error between commanded position and encoder position, then applies torque proportional...
  8. Makes sense, should work nicely since you have...

    Makes sense, should work nicely since you have that encoder feedback directly on spindle. I guess it does make sense for you to stay 1 to 1 so you have plenty of pulley grip. Here's another...
  9. Yes, right now with my 1 to 1 gearing the z pulse...

    Yes, right now with my 1 to 1 gearing the z pulse works great as a very repeatable home, the problem arises when I gear up the spindle like mentioned in original post. At that point, the encoder zero...
  10. Nice! Couple things I've learned from that exact...

    Nice! Couple things I've learned from that exact configuration, a brake is definitely needed to get good rigid holding for index machining. The belt and servo have excellent torque capability, more...
  11. 16 bit gives you 0.005 degree resolution, not...

    16 bit gives you 0.005 degree resolution, not 0.005 degree accuracy. Basically that means there are 65536 steps that are all very repeatable, but it is not perfectly linear. It's limited by the...
  12. Awesome, I'll check out those sensors. 4 tenths...

    Awesome, I'll check out those sensors. 4 tenths would be plenty accurate at the given radius.

    Encoder directly on spindle is what I wanted to do, but after a long email conversation with dmm...
  13. Most accurate home switch for rotary axis

    Thinking about rebuilding my mill turn spindle soon to get more rpm out of it. Right now it's geared 1 to 1 with a 1.8kw dmm servo using a timing belt which gives me a bit under 3k rpm. I'd like to...
  14. Ok, sounds like it adds some huge capability if I...

    Ok, sounds like it adds some huge capability if I can figure out how to use it. When I build my next machine, I don't think mach3 is gonna cut it. It will be a mill turn much more complex than my...
  15. Ok, hopefully that means everything in the...

    Ok, hopefully that means everything in the screens is accessible through scripts. I'll keep digging and try to find some examples. I'm assuming the names of things need to be written a specific way,...
  16. List of dro's, leds, buttons, parameters etc. For mach4

    Thinking about switching my mill turn machine over to mach4 from mach3. Right now I'm just starting to get comfortable with vb scripting in mach3 and have zero experience with lua, but if im gonna...
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    Also check out glock cnc. They sell upgrades for...

    Also check out glock cnc. They sell upgrades for taig and I believe are also a dealer for taig and will sell an upgraded machine instead of replacing stuff later. They have a bt30 spindle headstock...
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    Yes, nema 23s will drive a decent sized machine....

    Yes, nema 23s will drive a decent sized machine. For example, the biggest tormach is driven by nema23, although those might be higher torque than the 300 to 400oz I mentioned. Someone correct me if...
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    I'm not the most experienced on here, but my 2c,...

    I'm not the most experienced on here, but my 2c, all your components will massively outperform that c beam frame. It's definitely going to be your limiting factor from lack of of rigidity. It all...
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    Ok, 50 bucks isn't bad. I think I'll start by...

    Ok, 50 bucks isn't bad. I think I'll start by ordering a chunk of 52100 just to see if I can turn it. If it goes well, I'll go from there.

    As for the grinding, here's my thought, one thing I...
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    The problem with those needle bearing clutches is...

    The problem with those needle bearing clutches is they don't have the same torque capability nor are they as reliable as the sprag. Some helicopter manufacturers use them, but generally in smaller...
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    Designing a sprag clutch assembly

    This is for a large rc helicopter. The sprag is used on the main drive gear to drive the rotor head and allows the rotor to free wheel for autorotations when the motor is shut down. A common sprag...
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    Re: Interrupted turning in aluminum

    Sounds good, I'll give a shot. It works out well for setup order reasons, but an added bonus is the automatic chip breaking which is a nice bonus in aluminum
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    Interrupted turning in aluminum

    I'm looking at possible ways of processing an aluminum part in the mill turn and there's one possibility that would work out very conveniently, but would involve interrupted turning. Basically a 1...
  25. Re: Need help brainstorming a solution for this mill turn spindle

    heres a few more pics and cad views. 2 cross sections of dual action brake and the whole spindle with closer and brake disk out of the way.
    ...
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