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Aaron Eberhard

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Posts posted by Aaron Eberhard

  1. Another way to do this is to use Convert to 5 axis, then use a Feed control Zone on the inside pockets to slow it down.  It'll work volumetrically, so any changes to the input toolpaths will be instantly updated.    I can grab a video tomorrow if it would be helpful.

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  2. Ah, yeah, you're doing complicated stuff there :)

    The only thing I could think of to do with a shape like that would be to create a surface on each individual shape (like, each pedal) using Surfaces > Power Surface.  Then, convert that into a sheet body solid ( Solids > Solids from Surfaces).  Finally, you can use Solids > Thicken or  Model Prep > Push/Pull to make it thicker.  Finally, you can boolean those away.

     

    But the real question is why do you need the solids removed?  Just to learn how to do it?  I'd toolpath directly off the wireframe you have in your image for actually cutting the part.

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  3. 2 hours ago, JCaceres1 said:

     Please guys I am a beginner, still have lots to learn. trying to Extrude/cut a chain (already wrap around a solid shape) error: The selected chains are not co-planar, please help. Thanks.

    This means that the chain (splines/lines/arcs) are not on a single plane.  You have to have flat geometry to extrude a solid.    The commands above have morphed into Wireframe > Project in the years since this was posted originally.

    If you're trying to wrap something around around a solid shape, you'll need to use Sweep instead of Extrude, though. 

    Post up a file and someone can probably point you in the right direction.

  4. 5 hours ago, cncappsjames said:

    BITD (mid 1990's) I did a test between wireframe toolpaths (2D Swept) and a surface toolpath (flowline) and pretty much came up with the same results as you did. The wireframe toolpath produced far less code than the surface toolpath did.

    What I never did a deep dive into was the exact reasons "why". Someone smarter than me will have to come and provide that answer. :rofl:

    Where is Jack Summers or @Pete Rimkus from CNC Software Inc. when we need them? :D

    I'll bet you could figure out the answer :)

    When you have a wireframe toolpath, you're handed the contour to follow.  If that contour is an arc, you'll be handed an arc to follow.  If it's a spline, you'll either have to fragment it based on tolerance, or, generate the toolpath then filter it back to an arc if you can .

    When you're handed a surface, you're not handed an arc.  You have to fragment the surface based on the tolerance of the toolpath (just like a spline based Contour).  You may be able to filter it back to an arc, but you may not.

    For example, here's an arc (black), and a duplicate of it that I used Spline From Curves (red) on.  Notice the same exact Contour toolpath's vectors:

    image.thumb.png.6e79e7866d4d6e02f38e06733e87644d.png

    That's what's happening in 3d if you use a Swept vs. (any) surfacing toolpath.

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  5. On 3/8/2024 at 7:17 AM, JParis said:

    and that was my understanding, linked, yes...does not actually run the gcode...

     

    On 3/8/2024 at 6:57 AM, gcode said:

     

    I use Machine Sim from Postability on our Okuma 5X HMC's 

    It is linked to the post but I don't  believe it runs on actual gcode.

    It is very useful for instantly checking the stability and smoothness of 5X toolpaths.

    Of course the final program goes through Vericut before it hits the machine.

    Yep, you guys are correct on the Machsim/Postability integrated version. 

     

    On 3/8/2024 at 7:31 AM, StevenM said:

    Yes sorry, I meant Postability Mach Sim. I dislike that there are essentially two functions called "Mach Sim," it always causes confusion lol.

    I had to look up what Autodiff is, that seems pretty handy!

    There is a reason for the confusion, as confusing as that is! :)

     

    MachSim (by MolduleWorks) has its own post processor (it has to, or else it couldn't figure out how to interpret moves from the CAM system).  It's called MultiXPost (https://www.moduleworks.com/software-components/utilities/ppframework/)

    When you launch "Normal" Machine sim, it's using the MultiXPost to generate moves.  As long as it "guesses" the same movements that your Mastercam post will make, you're good to go!  If it doesn't guess correctly, though, you can be in for a surprise.   An example would be that you're on a B/C machine, and MultiXPost guesses that your toolpath needs B90 C0, but, when you post out of Mastercam, it goes to B-90, C180.   Both are valid solutions, but one could cause a problem and one could be fine.

    What the "add on" allows you to do is to swap out the MW Post Processor for the same MP post processor you'll use in Mastercam to generate the NC, so that the moves that are fed into MachSim are ran through the same engine that will write the code.  That means, the X/Y/Z/A/B/C moves are calculated the same as they will be on your machine.  You should always see the same B-90 C180 in both (to use my above example).

    The downside is that it's not simulating M codes, etc.  If you have an m-code on your machine that causes the C axis to reset the counter or something, it won't see it.  Probing?  Won't see it.  Tool changes?  You guessed it.  HPCC causing weird motion?  You're not going to see it.  You're only seeing what the toolpaths generate.

    The upside is that because it's not as complete (i.e., requiring a control model to simulate the control state) of a solution, it's a LOT cheaper, and because it's integrated, it's quite fast to check setups and motion.  Your Mastercam reseller can give you a final price, but I believe for a "normal" 5 axis machine, it's somewhere in the $3-5k range. 

    What I often tell people about a 5 axis toolpath:

    Backplot?  50% confidence that it'll run without crashing into something

    MachSim?  75% confidence

    MachSim w/ Post Integration:  95%

    To get to 100% confidence, you really need Vericut/NCSimul/CAMPlete/etc.

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  6. The middle mouse button is a keystroke like anything else, it's just in the background...  Remote desktop will be using the local hardware's version of that keystroke, so if you have, say, a Logitech mouse with the Logitech software on your computer, but a 3d Connexion mouse with their software loaded on the other side, your Logitech keystoke isn't being received correctly by the 3d Connexion side.   

    1st thing I'd try is to remove any custom mouse drivers on your personal computer and see if that clears it up. 

  7. 1 hour ago, JB7280 said:

    That makes sense.  So it's trying to make it a perfect 45, but the tool profile doesn't allow for it.   

     

    I can just do a normal contour, since I'm not really looking for a specific chamfer.  Just a deburr edge break.  

     

    Also, I was not aware that Mastercam sees it as a true ball, despite the profile, so I appreciate that bit of knowledge.   

    That's what I'd do... 

    And yeah, in any toolpath (in pretty much every general-use CAM system I'm aware of), it's only going to be using the mathematical model of the tool selected, and then only apply the custom profile after the fact for stock models/verification/etc.     Otherwise the math driving the toolpaths would get REALLY complex really quickly!

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  8. 20 minutes ago, JB7280 said:

    I made one toolpath with the cut length set to .16", per Harvey's website.  Then another one with an extra .01" added on, so it would generate a toolpath.

     

    https://drive.google.com/file/d/1v2mQA36a01resceaPnPiBnz0HMhcrjHL/view?usp=sharing

    I couldn't get it to work, either.  I'm guessing that it's something to do with the 3 axis engine driving it?  I'd send it in to [email protected]

    What you can do to make it work is to switch to 3+2.  With this part, you still get 3 axis only output, but it will generate.. However, it's still cutting on the "no go" area behind the ball, just like it is when you set the cutting length longer. 

     

    To be honest, though, with this cutter, I'm not sure what the desired results are in 3 axis.

    I mean, I know we want a perfect .0125" edge break cut like this:

    image.thumb.png.f2e2cc0218620276d4c57498bdf3a57e.png

    However, that requires the center of the ø.188 cutter to be perfectly 45° from the corner, tangent to the radius with that .0125 width.

    If we bring your tool profile over that, you get exactly what you see when you allow it to cut .17 length of cut, instead of .16 (remember that the toolpath will always calculate against a true ball, your custom profile is only for display/verification purposes):

    image.thumb.png.c15161f4634957e71e1e7d56b3b37284.png

    If you try to slide your tool down so it's not cutting with the back part of it, then it becomes impossible to maintain a constant width:

    image.thumb.png.6dbca716b18e9889aee7dbf8da3f6ebe.png

     

    I would expect it to work, though, with a constant depth (you'll have an uneven width on the two sides, of course), but that doesn't work either.

     

    I'd guess that this is an enhancement, that the algorithm team at ModuleWorks would have to handle specifically.

    I think you'll need to drive this one manually and report it for future improvements.

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  9. 5 hours ago, phill heward said:

    thanks Aaron, ill order those manuals if they still available and plod on until they in a position to upgrade .

    the problem i have it id never touched a propper big boy mill ( or any version of mastercam) until a few months ago, im having to learn everything from day 1, oh and theres no help available other than what i can get off the likes of here.

    i been a machinist since the early 80s but mostly on manual machines, done some cnc (haas tl1 and xyz 2 axis mill) and could look at a drawing and convert directly to gcode in my head.  its so strange but this is the first time ive been in a position to do the full range, design it, model it, cam it, machine it, build and test it, repeat it.

    Well, the offer is still on the table to do remote training if they'd like to pay for that like we talked about in Oct., just expect lots of cursing as I try to show you something that your software won't do for another 6 or 7 years :)    

     

    But I'm guessing that the brass isn't exactly hip to spending money on training if the software is that far out of date.   Sounds like people who don't understand that paying someone to struggle through something for 40 hours is not better than paying to have them trained so they can solve it quickly and save time every day...

  10. 1 hour ago, JParis said:

    That was kind of  my point, I likely missed the mark a bit...it is going to be VERY tough to find anyone that still have a version that old still installed...I don't want to speak for Aaron but I think he was alluding to that by suggesting looking for an old X8 book.  The interface and abilities have changed GREATLY since that version.

    One suggestion I might have for a book to is try Ebay...I have seen older training books available on there

    I haven't had X9 on my system since 2016....as of right now I only have 2024

    Yep, that's exactly what I was going for :)

    I can't even run X8.. The oldest I can run is 2019, because I'm on a software license.

    1 hour ago, phill heward said:

    you mean mastercam uk?

    No, I meant In-House Solutions.. They're the Canadian reseller for Mastercam and the gracious host of emastercam.com.     They still list X8 training materials on the website?

    https://www.emastercam.com/store/category/161-mastercam-x8/

     

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  11. 1 minute ago, phill heward said:

    ok, ill have to login on the other pc. the mastercam is on a different machine to wht im on now. also im using x8. they cant afford to update it yet.

     

    Ah, yeah...  There's going to be a lot of differences between X8 and now.. That's from 2012...  A whole lotta differences.     I'd imagine it's tough to find YouTube videos showing the older interfaces and such, too..

     

    Maybe contact in-House and see if they still have a multiaxis training manual they can sell you from that version?

  12. Gotcha!

    To create a zip2go, go to File > Zip2Go.  It'll create a mcam-content file that includes your post processor along with the file. 

    Sounds like you want to either lock the toolpath to 4 axis, or at least Rotate Around Axis. 

    Our generous hosts here have put their training materials out for free:

    You should still have my email address, right?  Go ahead and email me the file.

  13. 1 hour ago, riverhunter said:

     

    Thank you very much!  that was the issue!

    You're welcome!


    Let me know if you need some training on the best practices when using the toolpath.  There's a few of us here who do it, and it's a fairly involved toolpath.

    • Like 3

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