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  1. #41
    Join Date
    Nov 2020
    Posts
    361

    Re: Design Concepts

    Quote Originally Posted by Buoyen View Post
    I'm thinking regular HS machining and enough low end torque to do face milling.

    Is it worth paying more for HSK40 vs ISO30?
    You can do face milling with any spindle just have to use smaller endmills. I don't see any reason to pay twice for an hsk for regular diy hobby stuff.

  2. #42
    Join Date
    Dec 2016
    Posts
    133

    Re: Design Concepts

    Yes

    Great thread btw

  3. #43
    Join Date
    Nov 2020
    Posts
    361

    Re: Design Concepts

    Quote Originally Posted by Buoyen View Post
    Yes

    Great thread btw
    Thanks, I went through your thread, you're doing a lot of good work. Good news is you aren't even scratching the surface of what you can do with a bt30, once you upgrade your machine frame you'll be surprised how far you can push a bt30...

  4. #44
    Join Date
    Dec 2016
    Posts
    133

    Re: Design Concepts

    Thanks

    Yes I guess a 30 taper is more than sufficient for what i want to do.

  5. #45
    Join Date
    Nov 2020
    Posts
    361

    Re: Design Concepts

    Here's what the final machine will look like.

    I had to abandon building it on a 1200x800x120mm granite plate. The weight of the thing was 350kg and I do not want to risk having it brake in half if the guys drop it while transporting it to the 2nd floor, one guy slips and its over.

    Moving from aluminum inserts to steel. I wanted to use aluminum plates and glue them with moglice to the blocks initially but once I computed how much of it I'd need I had arrived at the same cost as steel inserts.

    I will use marking blue, a 4um straight edge and a hand grinder to get the inserts to desired flatness without a reference plate. If that won't work(as in takes too much time)I'll get a 800x500 granite plate as both the bed and reference. Fingers crossed I won't need it. Regardless, the bed will be 2 piece. Not sure about the front mounting plates on the bed yet.

    Size 25 rails, narrow carriage CG series from hiwin(same price as HG but load and stiffness rating of RG), size 20 or 25 ballscrew with 5 pitch. Travels 420X 280Y 280Z. Total weight approx. 600kg

    anyway have a look yourself : https://www.mediafire.com/file/emc1d...ca/be.stp/file

  6. #46
    Join Date
    Nov 2020
    Posts
    361

    Re: Design Concepts

    Unsurprisingly the steel tube under table is proving to be a major headache. Nothing wants to align nicely, if the structure is good to support the weight, can't make the sheet metal covers for muck removal work. If I make them work, the structure is faulty. It's not looking too good. Been looking at haas cad models for some inspiration on enclosures but haven't found anything of help. Have to try a different approach.

  7. #47
    Join Date
    Nov 2020
    Posts
    361

    Re: Design Concepts

    Managed to get something remotely working. Have to say I am not a fan of it. There's something about it I don't like though I just might be too picky. This setup allows me to separate chips and coolant. Though I can't get rid of a feeling that it's flimsy at best.
    Attached Thumbnails Attached Thumbnails 2022-07-04 16_41_52-NX - Modeling.png  

  8. #48
    Join Date
    Dec 2016
    Posts
    133

    Re: Design Concepts

    I don't really understand your model. Is the chip tray the sheet metal beneath the table with a very tiny gap on the sides?

  9. #49
    Join Date
    Nov 2020
    Posts
    361

    Re: Design Concepts

    Quote Originally Posted by Buoyen View Post
    I don't really understand your model. Is the chip tray the sheet metal beneath the table with a very tiny gap on the sides?
    Yes, but I don't like it very much. There's not enough space between the components to fit the tray in any other way. The gap is 20mm. This approach is flawed.

  10. #50
    Join Date
    Dec 2016
    Posts
    133

    Re: Design Concepts

    Can't you make the gap wider?
    Is there any gap on the front side?

  11. #51
    Join Date
    Nov 2020
    Posts
    361

    Re: Design Concepts

    Quote Originally Posted by Buoyen View Post
    Can't you make the gap wider?
    Is there any gap on the front side?
    On the front same gap, the gap isn't the problem though, 20mm is good enough for small chips and coolant only pools slightly on flat surfaces, the problem is this approach to steel table + chip management. I've already deleted this so no point in dwelling on the past.

  12. #52
    Join Date
    Jan 2023
    Posts
    436

    Re: Design Concepts

    So I wrote a semi long post with .step files for download but the post didn't go through, some review process or something, I didn't save the links, maybe it will come through some day...

    Long story short, I did 2 attempts at fixing the previous frame, the spindle was too far from the bed:

    A1 https://i.imgur.com/6Iw3NGU.png
    A2 https://i.imgur.com/oJ4Xln2.png
    B1 https://i.imgur.com/U4WHFOM.png
    B2 https://i.imgur.com/TOdubub.png

    Other things:

    C3 ground ballscrews : https://www.aliexpress.com/store/gro...02562133.html?
    Solidedge goes free aka community edition, no CAM : https://www.plm.automation.siemens.c...ware/community

  13. #53
    Join Date
    Apr 2018
    Posts
    131

    Re: Design Concepts

    Quote Originally Posted by ardenum2 View Post
    So I wrote a semi long post with .step files for download but the post didn't go through, some review process or something, I didn't save the links, maybe it will come through some day...

    The 'system' decided to hold your post in suspension for moderator approval. It has now been approved, and posted publicly. I don't know the exact triggers for "moderated posts", but I suspect that since you are now using a "new" user account, that is part of the trigger. Generally its better to resolve whatever issue there is with the older existing account (even if that resolution required Admin intervention.)

  14. #54
    Join Date
    Jan 2023
    Posts
    436

    Re: Design Concepts

    Quote Originally Posted by RaderSidetrack View Post
    The 'system' decided to hold your post in suspension for moderator approval. It has now been approved, and posted publicly. I don't know the exact triggers for "moderated posts", but I suspect that since you are now using a "new" user account, that is part of the trigger. Generally its better to resolve whatever issue there is with the older existing account (even if that resolution required Admin intervention.)
    Thanks for the swift action!

  15. #55
    Join Date
    Jul 2018
    Posts
    6254

    Re: Design Concepts

    Hi Ard - Solidworks must be feeling the pressure from the Fusion360 camp. I'm starting to warm to Fusion and see that it is and increasingly going to, rival/overtake inventor/SW and solidedge and all those old tech CAD systems. Peter

  16. #56
    Join Date
    Jan 2023
    Posts
    436

    Re: Design Concepts

    Quote Originally Posted by peteeng View Post
    Hi Ard - Solidworks must be feeling the pressure from the Fusion360 camp. I'm starting to warm to Fusion and see that it is and increasingly going to, rival/overtake inventor/SW and solidedge and all those old tech CAD systems. Peter
    Fusion would be on top in this cad wars if it didn't start cutting modules away from the free edition. It almost seems like their business mentality is cutting things out of the cad instead of adding them. Anyway I tried simsolid, 4h FEA in nastran took <60s in simsolid, holy ****, it doesn't have a lot of options, but it eats through structural like its butter

  17. #57
    Join Date
    Jan 2023
    Posts
    436

    Re: Design Concepts

    UHPC vs EG

    To those buying uhpc from https://www.moertelshop.eu once you buy all the required additives, shrinkage reducer(which is a must) PCE etc. you end up at about the same price as EG. So make sure you know what you're doing because it's not cheaper as durcrete price list would have you think.

  18. #58
    Join Date
    Jul 2018
    Posts
    6254

    Re: Design Concepts

    Hi Ard - Re Fusion. You don't get a free lunch. The aim is to get the paying users in. They have to develop the business, so payment is important. The Fusion subscription is less than my prior CAD systems annual maintenance so I'm happy. My only complaint at the moment is that the drawing features need refining. The drawings look like high school level to me... Re: Simsolid - I have been using it for a few years now on large mining vehicles. What used to take me 2 weeks to do I do in a day. It will analyse right down to individual welds or nuts and bolts. A feat that is uber impressive. Plus it is the only FE system I know of that will analyse the internal structure (infill) of 3D printed parts. Being meshless and driven by partial derivatives vs matrices means they can use optimisation algorithms easily. I read a paper on using simsolid to optimise a medical implant. Using std FE took 2 weeks to run the code, using SS took an hour and the result was more accurate. This sort of engineering is scary futuristic happening now... Next machine design I will be doing generative work on every part to see how it goes.... Peter

  19. #59
    Join Date
    Nov 2013
    Posts
    4282

    Re: Design Concepts

    Hi,

    Solidworks must be feeling the pressure from the Fusion360 camp. I'm starting to warm to Fusion and see that it is and increasingly going to, rival/overtake inventor/SW and solidedge and all those old tech CAD systems. Peter
    I've been using Fusion, a paid subscription for about three years and I too am OK with it. Fusion does lots of different things, including and especially important to me is the electronics and PCB module.
    Fusion it not the best at any particular thing, I prefer AutoCAD for drawing, MasterCAM for CAM and PSpice for electronic simulation and EAGLE for PCB design.....but what Fusion does
    is bring all of these things together. I just have learned to accept that any particular aspect of Fusion may only be 95% of what I would call top-tier but I can go seamlessly from one aspect of design
    to another in the same software package.

    I have a few months ago purchased the Machining Extensions, even the introductory offer was nearly $2000NZD, and am really only now starting to get the hang of it. Machining Extensions has 4 and 5 axis,
    collision avoidance, tool path editing etc....but it sure does cost!. I have to make up my mind before August whether I wish to renew the Machining Extensions subscription, it's a little over three times
    the basic subscription, so its not trivial.

    Craig

  20. #60
    Join Date
    Jul 2018
    Posts
    6254

    Re: Design Concepts

    Hi Craig - Yes it maybe $2000NZ but the alternatives cost much more than this!! I used mechsoft and for 4-5 axis they want $12000AUD (plus $1500/year maintenance) but in F360 its the $2000AUD extension. Plus you can buy a months worth or a weeks worth if you only use it on and off. I like the ability to go to a client and start it up on their machine and have everything there. Other systems I had to check it in and check it out and if there was a glitch in this it could hang up for days until someone in USA fixed the issue. I'm sure there will be price creep though... Peter

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