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Milling Machine to CNC Conversion - Precision Mathews Part 2
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- Опубликовано: 18 авг 2024
- Today we're converting a manual milling machine to CNC. We install high quality ballscrews, ballnuts, and angular contact bearings on first the Z axis and then the Y and X axis. We also install stepper motors. This video features tips and techniques that I have developed over the past 10 conversions or so. You'll even see hardware from the first CNC conversion I ever did that was made on a manual milling machine. I learn something new every time. Please share your own CNC conversion tips and experience in the comments below.
Details:
More info on the conversion kit used in this video can be found here:
www.cncelement...
More info on the Precision Mathews PM-25MV milling machine used in this video can be found here:
www.precisionm...
This conversion utilizes the Centroid Acorn control board. Let me know if you would like to see video content on my specific setup:
www.centroidcnc...
You can see by the comments how much your video is appreciated. I'd just like to add that your editing and especially syncing audio/video is superb. I know that's not so easy, even though you make it look so. As a retired person I have time on my hands and I own a manual Top-Tech geared head DM45 milling machine and am considering heading down the CNC pathway. With help from people like you I think I will go ahead. Subscribed. Thank you.
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You started your cnc conversion yet mate? If not, this is your sign that its about that time ;)
Excellent video! Well written, well demonstrated, you left little to nothing unexplained. Keep up the good work!!
Stunning narration and video tutorial for a CNC conversion. Well done, and thank you.
You are very welcome Aaron.
Bravo my good man. Excellent bit of kit and clear tutorial. Stoked to see how she cuts.
Nice to see, we did a 4 axis CNC build off of a TAIG and it runs well but we love tool changers because changing to tools in the holders after each program cycle per tool is well tough, we are spoiled.
Lance & Patrick.
Glad I found you.. Doing a PM30 here using the Procut ballscrew kit. A few videos out there, yours is very digestable w/o a lot of excess commentary. Thanks!
You make everything look so easy. Great work!
I hope to do something similar for my milling machine. Very nice straight forward steps here. I know mine wont be exactly the same as yours but its good for a guide.
I will be very glad to be ur student. Great workmanship.
Hi Joseph are the files still available? Site seems to be down/offline. Great video, you make the process look easy.
Yeah, that kind of sucks, doesn't it! I guess he's moved on and doesn't want to commit to this.
Hi I am Rohit suryawanshi from India great work sir
Hi Thanks for sharing your work, the video is fantastic, informative and concise.
The video is titled part 2, I can't find the first video, has it now been removed from RUclips?
I'm investigating a conversion on a Warco WM14 mill so keen to follow your process to adjust for the Warco.
I guess need to install some dempher for Z-axis to compensate weight milling machine head, something like gas-lift, on the video during Z-axis moving down the ball-shaft did few rotations after motor stopped.
very cool your video ... put more!
Awesome video bud. Thanks!
This is how an assembly video should be made.
Great video
A very clear and informative tutorial, thank you
Great video! Where is part one?
I’m hoping to kinda mimic this with my cheap wen mini mill
You should have milled flats on the ballscrew before you dismantled the mill. That way you could use a backup wrench to tighten the jam but.
awesome video great info.
nice video for cnc enthusiasts.
Awesome video!! 👍🏻👍🏻
It's a very nice conversion.
Inspiring work!! Neat conversion!
Again another coincidence I found your comment🤣😂😂🤣. 2nd time randomly.
@@DiscoverRajivVlogs lol!!!. Sounds we are tricked by the same interests and suggestions of RUclips. Nice to see you here too!
@@berendlucasvanderweide Yep, I got you second time.lol.
Vraiment très bien fait!
Very very good 👍👍👍
Thanks!
Excellent!
This is great. You make it look easy. Do you sell these kits? What PM mill do you use?
Thanks,
Paul
Nós dó canal ferreira motos estamos acompanhando tudo, 🇧🇷🇧🇷🇧🇷🇧🇷🇧🇷👍👍👍👍👍👍
Wow seen something I have never seen in youtube, thats new.
Thank you.
Where is part 1? Went to your channel and only one other video, that’s not part 1. Would love to see the first video as well as a new video showing the conversion in action. Regardless, Well done.
Parabéns !!! que legal
Nice… the parts that you build for this project (mount brackets for example) are made in aluminum??? Regards
1st class instructional video - thumps up and subscription
Thanks for the kind words Robert.
the paaaain @2:04 :P btw nice job
Hello, where can I watch the part 1 of this video?
Instead of doing the conversion, is it possible to just buy spare parts of PM machine that are required and build/buy the update. That route would be cheapest.
I don't see parts 1 or 3?
Did he die and we don’t know?
Nope, single video is whole series. Title is wrong,or maybe he decided to split the videos but he didn't.
Will you be posting a build job using this new CNC?
I have a question. I currently have an X2 Cnc conversion mill with Nema 23 motors using a 1/4" shaft. Can I switch my motors over the the PM 25mv cnc conversion , but I would just need to get the 1/4" coupler ends to fit onto my Motor shafts correct? I believe the Ball nut screws have a 3/8" for XY and 1/2" for z, but COuldn't I just get the coupled end for the motors to fit the motors shaft correct?
great video
Why does the lead screw need to be replaced? To get rid of backlash?
Yes
If this is part 2, then where is part 1?
Kermit Frog part one is when he bought the the milking machine
@@biyaglaki2523 I love CNC Milking Machines
nice job and am going to go search for the video on your electronic (hope it exist)
very cool
Nice conversion. How you made a kit? By cnc or manual?
Can't access the website with the conversion.
The link to buy the kit seems to not work. I get "403 Forbidden".
Very neat work brother but I think your bearings are way too loose (5:37). You need some press fit, just enough to tap bearings in.
Those bearings are not seeing any lateral forces, so no need to have a press fit. Sure it would be by-the-book, but doesn't affect the end result here.
Where do I get that jog handle?
SPECIAL PRODUCTION
How confirm the alignment of lead screw position when consider the tough connection? thanks.
do you machine these kits yourself?
I'm not allowed to go to your website. Is it still in service?
Kolay gelsin 🇹🇷🤝
my name is Joseph great video thanks Joseph
What's the point of using angular contact bearings for the X axis ballscrew if you only have one side? This means the motor's bearings are supporting the other side, which is one of the main reasons bearings are used in the first place.
Removes axial play from the screw. Doing both ends would overdefine the assembly and lead to problems with thermal expansion.
Do you have any kits or plans available for purchase?
That's what I'm talking about!
I own exactly the same manual milling machine, I am looking for advice on how to motorize the x axis. May I use the same hardware? Should I use the same hardware, considering that I don't need the reproducibility of a CNC machine? Thanks
What stepper motors are you using in this project?
MORE! MORE! MORE!
I'm kinda curious here, Why change the existing screw with a new lead screw?
manual mills come stock with ACME threaded lead screws, instead of the ball screws that he installed. ACME is fine for manual machines, but has too much backlash for a CNC machine. Ball screws eliminate most of backlash by using ball bearings to interface between the lead screw and the ball nut, www.barnesballscrew.com/images/1.jpg which is attached to the slide/head/saddle.
@@911dddd911 thanks for the info bro
Máy phay mi ni 👍🏆👏👏👏👏❤️
great video, great explanation, thanks so much
where is part 1.
Where is part 1? Right
Won't the love joy coupling add backlash error?
Generally not, as long as you use high durometer urethane spiders. Fadal uses these style of couplers successfully. The couplers do wear out over time and need to be replaced. The alternative is to use a bellows style coupler, they are made of metal.
How much it's the total cost for this conversion??
Which steppers are you using?
Amazing. Do you sell the entire kit? Or just the ball bearing and plate?
Thanks Joel. I sell the entire conversion kit except the stepper motors and controller. This kit requires two NEMA23 stepper motors (X and Y axis) and one NEMA34 stepper motor (Z axis). You can learn more about this kit at www.cncelements.com .
@@cncelements1987 do you have the link for nema23 and 34 since they all have different oz force which I not good at picking correct stepper.
I would buy the highest torque one you can afford. AutomationTechnologiesInc.com has lots of options at great prices (no affiliation). They also sell motor drivers and everything else you might need.
Very cool are your kits using single or double ball screws? Are you located in the United States? Where is part 1 of the video?
This kit uses single ballnuts. These kits ship from Florida. Part 1 should be coming soon.
Website doesn’t work….
The link to the files is Forbidden 404
wouldn't it be both cheaper and easyer to use the pre-existing lead screws?
No because they are not ball screws, they will have too much backlash. The ball screws effectively have negligible amounts due to them running in circular channels which you can actually on the better ones pre-load to tighten the nut up against the screw.
at 330 shouldnt you be using a thrust bearing ?
Angular contact ball bearings are designed to take both axial and radial thrust loads, so a separate thrust bearing is not required.
👌👏🙌
Would this kit be compatible with the Warco Wm18?
Very interested in your question, i have just bought a WM18 which is the PM 727 equivalent. I am currently planning cnc conversion. I have the steppers and most of the electronics. I failed to find any help with CNC conversions except at huge cost so will use my old X2 cnc mill to machine the parts.
John
@@john2478 Hi John, out of interest why CNC the mill if you already have the X2? Also did you see the Model Engineer magazine WM18 conversion? Its only an overview and gives little detail on how to do it or costs, but its a nice approach, even features a second high speed spindle. One approach I have seen is to buy a second table and machine away the necessary clearance for the ballscrew housing, that way you dont invalidate your warranty and you can use the manual mill to make the mods. Thats what I would have to do as I do not have second mill sadly. It does seem to be an expensive process no matter what.
My X2 conversion was sucessful and has been in regular use for. 10 years. However I wanted a more substantial machine with a stiffer column to take deeper cuts. If you want to share ideas you can pm me on my channel after subscribing. I like many of Josephs ideas and will incorporate them.
John
This is not how you preload bearings. With this bearing configuration you need precisely machined distancer between inner races of both bearings. Problem is
How you will measure the exact distance between the inner races when they are all ready mounted.
Sure you can do it this way, but it isn't the perfect solution. As for measuring the inner distance, there is no need to measure the inner distance if you know how much preload you want on the bearings, as you can look it from the bearing preload chart or measure the needed gap if data is not available.
hi , why you did not use a bearing in the motor side of the x axis?
Since there is a pair or opposite angular contact bearing in the left side the ballscrew can't move, so it seems it's not needed in the right side. Same when you use BF12 mounting blocks, on side is only for alignment. The motor does exactly that. Neat design I would say
se ve de huevos!
You are gonna have excessive backlash on Z and Y, but you already know that
Подшипники не те! Нужно радиально-упорные, а не эти. И все детали из стали, а не дюраль. Иначе будет низкая прочность. И не вижу системы смазки швп и направляющих. Без смазки чпу фрезер долго не проживет. А где концевые датчики на ось x и y? На z концевик недоразумение. Умрет быстро. Нужен индукционный, а не такой.
Are you still in business ?
check their links. they are still up
Joseph can you answer your email please. Not sure if you seen it or not. Thanks
Paul, thanks for the email. All the best with your conversion.
hobby cnc okay but this sound of stepper motor arrrrrrrrrrrrrrrrrrrrrrrrrrr
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there is no such thing as a flathead screwdriver it is a slotted driver!
this is a scammer, be aware
Your spindle bearings are a joke! That's not how it is done!