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Type: Posts; User: mmurray70

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  1. Re: is the Dynomotion controll as confusing as it seems?

    Most of those Bridgeport Boss mills originally came with steppers. A friend of mine has a very similar machine that we retrofitted nearly 20 years ago with geckodrives and turbocnc, kept using the...
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    Re: 4th Axis With Argon Drive

    Here is my code to clamp:


    #include "KMotionDef.h"


    main()
    {
    Delay_sec(0.25); // wait for everything to stop
    ch3->MaxOutput=1; // reduce max gain
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    Re: 4th Axis With Argon Drive

    Depending on your setup, you might be able to look for some sensors to determine if the 4th axis is plugged in or not, and then configure things accordingly.

    For example my 4th axis has sensors...
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    Re: Problem with Y axis, need help!!

    Hi Tom,

    I went ahead and enabled it with that single change you posted and everything worked fine. Y axis seems smoother then ever. I did a looping program to move around and return to hit an...
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    Re: Problem with Y axis, need help!!

    Hi Tom,

    One more question. When I first tested this, Ch6 was counting in the wrong direction. I added the following line to my init to make it count the same direction as CH1:
    ...
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    Re: Problem with Y axis, need help!!

    A little update. I tried re seating the connector and no change, no sign of corrosion or anything either. I checked voltage on everything and Im getting 5.1v supply to encoders, 3.52V across X axis...
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    Re: Problem with Y axis, need help!!

    Hi Tom,

    I have some progress with this issue today! I decided to go ahead and parallel my encoder inputs for Y axis (CH1) over to CH6 to do a double check. And right after doing this the problem...
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    Re: Problem with Y axis, need help!!

    Thanks Tom, Ill try and figure out some code to check for this. Feeling much more confident about this now. This should catch any possible issue in the receiver, or screw terminal connections. So if...
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    Re: Problem with Y axis, need help!!

    The machine has its own DC power supply, very similar setup to standard pc power supply (pc supplys can even be used as replacements) and Im pretty sure I used the 5v supply from this to power...
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    Re: Problem with Y axis, need help!!

    Hi Tom,

    I have eliminated the encoder as a possibility. The original encoder I was using ran fine for a year or so, when it acted up the first time (in 2018) I changed to a spare encoder and still...
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    Re: Problem with Y axis, need help!!

    Hi Guys, unfortunately I had this issue come back again a couple weeks ago. Same problem exactly. Rough sound in Y axis under rapid and then position slightly off. Worked fine for a year and a half...
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    Re: Fadal Hobby Machine Rebuild

    Yes exactly just knock off the high spots, sand the sharp edges a little, then wetsand the whole area you were working on and you will be fine. Looks bad but wont cause any problem at all.
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    Re: Rough Finish on 45 Degree wall

    Few more pictures of some 1" thick stainless parts I made this week. The center square happened to be orientated at 45 degrees in the drawing so I ran it like that to see what finish would be like....
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    Re: Rough Finish on 45 Degree wall

    Any chance the noise is from the coupling rocking on the shaft? You mention shaft is smaller, did you sleeve the old coupler maybe? Improper fit? Something off center a little and rubber coupler...
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    Re: Cutter Comp error?

    Ok I think I understand now. So because it was linearized it cant work with all the tiny sharp corners when compensating inwards. Makes sense. I was using a negative wear comp with this, just tried a...
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    Re: Cutter Comp error?

    Did a little more testing. I can do 2d contours with a helix lead in no problem. When I try to ramp in with a helix it will let me do the outside of the groove, but not the inside?? Same size/shape...
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    Re: Cutter Comp error?

    I tried adding that line, but still get the same error. here is my file:



    Attribute Value Other Possible Values

    block_delete ON OFF
    current_x 0.0 any real number...
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    Re: Rough Finish on 45 Degree wall

    Good to hear you have that sorted out.

    DMM told me that none of the auto tune stuff applies when using torque mode, so probably no point in trying those. I think thats torque mode tends to work...
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    Re: Cutter Comp error?

    No, I had no idea about this. This sounds like just what I need. I'll try changing it after i finish this job. Dont really want to risk damaging these parts. So i just copy this line:...
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    Cutter Comp error?

    Hi Tom,

    Wondering if there might be any way to improve the cutter comp errors in Kmotioncnc? Seems to be an issue with internal sharp corners. I've learned to deal with this one most times.
    ...
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    Re: Rough Finish on 45 Degree wall

    Could something be tighter then before? Are you in a different part of the travel then before? Worn part of ballscews? Long way from thrust bearing making ballscrew act like spring which would make...
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    Re: Rough Finish on 45 Degree wall

    Im guessing your finding some kind of small error in a combination of backlash and/or friction (stick/slip).
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    Re: Rough Finish on 45 Degree wall

    Looks like your making progress, good to hear its smoother and quieter! Hopefully its more accurate while cutting. Post a before and after video if you can. Curious about the noise you had while in...
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    Re: Rough Finish on 45 Degree wall

    I cut some parts today with a flat bottom and an angled cut and though i would post pics of my results as a comparison. Im getting sort of the same thing but I think on a much smaller scale, its not...
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    Re: Setting Zero and divide by 2

    Thanks again Tom!
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    Re: Setting Zero and divide by 2

    Tom do you have this patch for 4.35b? I upgraded a while ago and lost this feature, really missing it. Thanks
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    Re: Peck drilling parameters

    Hi Tom, doing some maintenance on my machine today and I remembered that I didn't follow up with you about this. I just wanted to let you know that this worked perfectly, and its a very helpful...
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    Re: Rough Finish on 45 Degree wall

    Hmmm, doesn't look to be a whole lot of difference, bottom one could possibly be a little smoother but might just be picture. Do they all look similar on the dial? They all seem to have some micro...
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    Re: Rough Finish on 45 Degree wall

    Can you post a picture of the block? Curious what it looks like. I was really thinking you would see some cuts with a better finish then others.
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    Re: Rough Finish on 45 Degree wall

    Yeah do 4 different depths. For example start with a piece of stock at least 0.550 above your vise and do your test 0.125 deep. Then shift Y -0.025 negative and Z -0.125 and do it again. When your...
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