MPCNC Automatic Tool Changer
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- เผยแพร่เมื่อ 11 เม.ย. 2019
- First video showing my automated tool changer for the Mostly Printed CNC (MPCNC). There are some additional features that I've not yet finished, but the basic ability to grab and park tools is working.
STL files are available on Thingiverse here: www.thingiverse.com/thing:356...
Video of changing between two routers: • MPCNC Automatic Tool C...
More information on this forum thread: www.v1engineering.com/forum/t... - วิทยาศาสตร์และเทคโนโลยี
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OHHHHHH DAAAAYYYUUUUMMMM!
something I've been thinking about for a while... Very cool.
And here I am trying to change tools from the router itself. To heck with that, I can pick up one or two more low end routers mounted in your setup with a roundover and maybe a 1/4" flat mill and have all the tool changing I'll need for 90% of the work I do. You could even experiment with "on the fly" 3D printing of PLA on materials (Don't know if there could be a need but you could do it with your setup). a very cool design Jamie, Thanks for sharing!!
This is as amazing as the mpcnc itself, super well done, I think a simple round tube with a set screw for holding the pen caps would make that fully automatic, cause you know the pen will always return to the same point based on the holder you already have for the changeable tool heads. I was trying to work out a rotary pen head for plotting work with it, where the rotation wheel was at a angle that would make just the pen you want down to marking level at any given time, and it just rotates them as you need them. But your system is very elegant and easy to do
Edit: Did get me thinking though, while this would take up a lot of room, you could potentially make something like a turntable with your tools on it, so you could have many changeable options, the mpcnc would always go to the same place to change a tool, drop off the currently used one, the turntable rotates in the new option, and it picks that up. Could also potentially be done with a vertical conveyor belt i would imagine, if horizontal space was a issue. basic principle would be the same, a single tool change location for the mpcnc, with mount options that move to bring the one you want in line.
Absolutely mesmerising. For a moment I thought the tool was changing to air-guitar (but it was just the camera angle)
This has been an epic project. It has a big future, for sure.
That's a thing of beauty Jamie, the holy grail of the MPCNC, congrats!
Expoxy the maker caps into the tool holder. when machine moves up, un-caps, and when tool returned should re-cap....
Wow Jamie! That is excellent!
This is wicked cool, a “how to” would be greatly appreciated!
Great job -- thank you for sharing. Wow.
Jamie, well done indeed.
Great idea, well done. Would be a great way to change to a laser cutter for small jobs then back to whatever else your imagination brings to mind
Biggest respect
Very impressive.
So brilliant... You could just glue the cap of the pens to the table and it you de cap it and recap it it self....
This is awesome, subbed. Have you thought about 3d printing some sort of dock for the tip of the sharpies so that you don't have to remove/replace the lid each time they are selected? It would be a challenge to design something that is air-tight enough to not dry out, but also loose enough to allow the sharpie to be removed easily. Maybe a rubber o-ring would seal it enough? Interested to hear your thoughts.
Yes I was thinking something similar. It is definitely a hassle and not truly automatic if I am having to mess with the caps. I think o-rings like you suggested is probably the best way.
Why not just glue the cap as part of the static mount? Have it pull the sharpie from the mount and out of the cap in one move.
SUPER GREAT MAN THAT One of the coolest tool changers I have seen thank for sharing and yes would really appreciate it if you made a how too that would be great
Respect! :)
I was thinking of a way to change bits by having a ER11 wrench on a geared motor, then a carousel of 1/4" shaft bits that inserts another in and then tightens the collet nut. It would be nice to have a tool calibration block to touch off but I assume you manually calibrate each tool.
This approach sounds somewhat like what you describe: hackaday.com/2016/06/20/hackaday-prize-entry-diy-automatic-tool-changer/. My approach is to instead swap out the entire tool: th-cam.com/video/vo7KJuAPb_M/w-d-xo.html
I thought you'd be auto changing endmills but markers are tools too.
Nice setup.
Yes, the downside is you would have to buy a separate router to switch endmills, but the advantage is you can switch to any type of tool.
That’s pretty damn cool
Jesus how much flex do you have in that toolhead? You have some crazy long standoffs, a very long unsupported Z axis and the longest bit in the world, i was surprised it didnt snap earlier.
I measured the deflection and it was about 0.5 mm per kg at maximum extension. This is significantly worse than normal for MPCNC because of the long Z axis, yet I am still able to successfully do wood inlay for example. I am working on a modified approach to achieve higher stiffness.
Awesome!
That is very cool how does the regitity compare to direct rigid mounting
I don't have measurements but it feels just as rigid. I believe the overall stiffness is limited by the z height and not by the tool mount.
How do you deal with wear on the plastic
How do you apply constant torque
These are both problems. Wear on the plastic, well it's somewhat of a prototype that hasn't seen long-term use, and I expect it wouldn't hold up for long.
There is no constant torque, rather a strong servo applies as much torque as necessary to get the mechanism to lock, and the sliding surfaces act like cams to apply an axial tension to hold the tool. Once in the locked position, no torque is required to hold it in place. The problem is that the axial tension is not a controlled force through a spring mechanism, but depends on small amounts of deflection of the plastic parts. As an effectively "rigid" mechanism, it is extremely sensitive to small variations. Small errors in the parts can produce much higher or much lower axial tension which can break parts or leave the tool loose.
Both of these issues were on my mind when designing the newer iteration, which is shown here: th-cam.com/video/UcohRxGHJx8/w-d-xo.html
We need The komplet building plan^^
hey Jamie thanks for this nice design is there any chance that you might upload the files as seperate objects? I am not able to split it. Maybe you are still working on it? thanks
Okay I've uploaded individual parts from the exploded assembly. I labeled them A, B, etc. according to a diagram I had posted here: www.v1engineering.com/forum/topic/automatic-tool-changer/#post-96929
I would love it if you were able to build this or a variant and share pictures or experiences.
Can you use the pipes for the z axis for your vacuum or blower?
An interesting re-use of the tube, but unfortunately I don't think it would be advisable because the z axis is sensitive to forces that try to tilt it away from vertical. With a relatively long lever arm at the top of the z axis, the weight of an attached hose could deflect it out of square.
Incredible project. Will there be plans released in the future?
Printable parts are already available at the thingiverse link. I am undecided if I will try to make a walkthrough someday.
Ahh, thank you ... I should really click that "SHOW MORE" button more often.
Video walk through would be nice to have though I don't even have the space for a MPCNC yet.
Really nice！But hard to understand, watched the stl, didn't see the latch mechanism
If it is not practical to control the router power from software, mount the On/Off switch where it can be activated by a finger on the router's cradle... then, as jcsc.biz suggests; build a self-sealing cap into the pen park. (It doesn't need to be a friction fit, just sit it into an "O" ring.) Now you have total "Hands Off" operation.
I did my router power using a relay wired into the fan control for my Rambo board. Turn the fan on triggers the relay which completes the 110v circuit turning on the router.
Why don't use "oval" pipe?
this can be implemented in 3d printer for multiple heads
Yes, you're absolutely right. E3D is working on a print head changer machine also. There is also a print head adapter for the MPCNC and I am planning to experiment with that. I might not switch more than one head but I have other things I want to try...
Excellent work. The OH SHIT button is hilarious. Also is your drag chain part of a tape measure? Cheers, JAYTEE
Thanks! Yes the tape measure is intended to operate as a drag chain, but my setup is not that good because it really needs a sleeve to work properly. This idea came from the MPCNC forums where this approach is common.
@@jamiekawabata7101 Great stuff 👍
I thought it changed spindle bits, that´s what I am looking for :D
What is your Z Dimension
Maximum Z travel is about 9 inches. Maximum workpiece size is a bit less depending on tool and fixturing.
So maybe I'm missing something but on thingiverse when I look at this I swear I the exploded parts diagram has different parts than the actual tool. Which should I print and do they require supports? I'd post in thingiverse but its not letting me log in right now. Between this and thekid halloween costume you need more subs.
It's possible I missed something but I think all the important pieces are there. The exploded view (yellow) and the exploded_grabber.stl includes models for where the bearings go, which would be replaced by bearings and not actually printed, and there is also an experimental face plate that i was hoping to use for electrical contact with the tool. These are not necessary. As for printing with supports, I think some do need supports but I don't quite remember, so it's a matter of using your judgement for most of them. The cleats are a special case since the shape is important and it has severe overhangs, so I have a file with supports modeled into the part: spool_with_screw_hole.stl should be printed with no supports, and then the shell can be removed after printing to produce the rotating cleat parts.
You can also ask questions on the V1 forum which is perhaps easier because we can include pictures, whereas youtube and thingiverse are both constrained to text only. Here is a thread about this build: forum.v1engineering.com/t/automatic-tool-changer/10106
Hi I just trying to get any information on have to set up ATC tab (screen) in mach3 but don't get any helpful information.
Can you help with that have you set it up?
"OH SHIT BUTTON" 🤣
I heard servos die out quick. youtube has been showing me so many tool change videos xD not taht i'm complaining!
It's possible it could die. E3D used a servo on theirs, while Jubilee uses a stepper with a torque sensing mechanism. I don't really know the longevity of servos compared to other mechanisms.
Typically for a CNC job there should be relatively few tool changes. Unlike a multi-color printer for example where you might have multiple color changes per layer and 1000 layers in a single job.
@@jamiekawabata7101 yeah! maybe the torque mechanism will help! I guess i'll see for myself
Anyone notice the """OH SHIT BUTTON """" LMAO
i think this is spindle changer
First I've seen this channel. TH-cam recommended it. Subscribed! I have cnn videos too. Checkout my kickstarter video.
Kind of an ATC but more of an auto spindle changer.
Yeah, you are correct. Although changing the spindle is only the means, not the purpose. At least to me.
I think I just came watching this🥴
Universal dove tail 3D Printers tool change adapter, manual. www.cgtrader.com/.../universal-dove-tail-3d...Advantages? Yes: one can change various printing heads, manually, on printers that were never made to accomplish this. Unlike the versions you can buy ready made, this is more compact, easy to install on a vast range of models with minimum tweakening, and you print it yourself mirrored or straight as needed. It has (Tada....) a Z axis sensor slider support adjustable as needed to the micron height by twisting a screw... Bye bye sensor adjusting headache.
Manual tool change is not in the same category. And I doubt that system could hold a router, so again not comparable.
@@jamiekawabata7101 if you can read, than why don't you read?
I wrote clearly: "one can change various printing heads, manually, on printers that were never made to accomplish this."
That is on your 200 USD FLSun gantry for example, and if you dream somebody will ever create an automate tool changer that can hold a router for an FLSun...
@@severpop8699 Exactly. I never said your item was not useful. I am saying that your goals are not similar to mine, which is still true.
@@jamiekawabata7101 My goal so far is beyond yours, and I have over 15 years of work put in that, but while I go down my road, I also think of those that can never ever help in my goals, or dream to be able to make for themselves a twin gantry 8 carriage metal FDM tool changing printer (yap it is work in progress) or at least a simple single gantry one carrier tool changing machine like E3D, and the like (that for them it is still S.F. domain) and may never ever have the money to buy one, and on a regular basys I design for them too, small improvements or big improvements, they deserve some attention too, although they can barely load filament in their printer, let alone take it apart and re fit it.
So I brought this to your attention too, we always have to look after the less fortunate than us, I do it my way, do you do it?
Cool story.
Tool changer?🤦♂️🤦♂️🤦♂️🤦♂️🤦♂️🤦♂️🤦♂️on Chees CNC
Awesome!