Meet the PolarBear | a Multipurpose CNC Machine with a Rotary Axis!
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- เผยแพร่เมื่อ 24 มิ.ย. 2024
- Meet the PolarBear. A Multipurpose CNC Machine with a Rotary Axis!
See the website : www.kadirilkimen.com/thepolarbear
Support the PolarBear project by:
paypal : kadirilkimen.com/paypal/
GitHub : github.com/sponsors/kadirilkimen
buymeacoffee : www.buymeacoffee.com/kadirilk...
ko-fi : ko-fi.com/kadirilkimen
liberapay : liberapay.com/kadirilkimen/
patreon : / kadirilkimen
I'ts an open source multi purpose desktop cnc machine:
3d printing
cnc milling
drawing
cutting
wood burning
and more...
Check Github for more information and to follow the development process:
github.com/kadirilkimen/Polar... - วิทยาศาสตร์และเทคโนโลยี
So I've been researching polar printers and apparently marlin does the conversion for you? So why do you need to run your gcode conversion script?
Good question. Marlin didn't have polar kinematics when I developed this machine. Now Marlin has support. Because finally I had time to develop it and the Marlin team merged it into the firmware a few weeks ago 🙃
Thanks for your generosity, it's amazing what the PolarBear can do. Wish you all the success in your endeavors.
Sure we will support polarbear Projects.
Genius! 👏🏻👏🏻👏🏻
Hi there!
Other ways to support the PolarBear and my other project are to subscribe my channel , likes and comments.
Please subscribe to my channel and enable notifications as I will continue to share developments. I also have other projects that might interest you.
software enginer here, how can I help you?
@@MrZentrix15
Hi, currently most important thing is that having a polar friendly firmware.
Grbl is simple and efficient. I think it is better to have a polar and cross slide grbl first.
Firmware should take g-codes as any regular cartesian machine and calculates the polar movement in the chip. So it would eliminate a post processing step and allow people to use their usual slicer and cam softwares. If you would like to work on it, feel free to contact me.
There is a contact form on this link : www.kadirilkimen.com/thepolarbear
@@kadirilkimen okey
@Tanishq Bahal Hi, It is an open source project. You can build it yourself. I am also in communication with a few manufacturer. But it will probably take months for them to offer off the shelf machines.
Merhaba , bu makinada kullanılan yazılımı paylaşabilir misiniz?
Looks cool! Simple and efficient, congrats
I love it. Especially the eyes on the X axis slide.
Kudos for the design, and extra kudos for the eyes ;)
congrats! really, amazing project.
Amazing project!
amazing project, congratulations. glad to replicate the project
Thanks!
really liked it, great project
This is incredible! Thanks for making it open source. Can't wait to build one myself!!
Just finished printing all the parts.Can't wait to assemble it.
Hi! I'm interested in it as well!
Keep me Updated on how it turn out!
What a cool project!
This is incredible, congratulations! Thanks for making it open source and for sharing. Forte abraço dos irmãos Brasileiros e engenheiros de garagem.
This is so cool! Very interested in building one!
Truly amazing!!
looks great, fingers crossed :)
Excellent creation, Congratulations, I sent Good wishes, also pray for you, see you, Allah Hafiz.
Love the eyes!
if you had a tilt axis on the end and a non planar nozzle you could print overhangs right off the side all the way around and then mill it :O
When is this coming out officially ?
hello, i loved this project, i will try to help with improvements
Awesome, thank you!
Beautiful ! Does it have its own Gcode generator ?
Hi, I think you mean CAM software. I have plans to start an open source CAM software project in near future. But you can use any CAM software to create g-code and use it on this machine.
Can it be possible to draw "Thread Art" also called as string art
Awesome project, just wanting for the BOM to be dropped!
Realy amazing project! Congratz! I just have one question... how to heat the bed for 3d printing?
Hi, I actually figured out the idea but had jo chance to try it yet. You can see the idea here : github.com/kadirilkimen/PolarTransmitter
@@kadirilkimen I was thinking of a solution too, the carbon brushes will wear out over time so maybe an induction heater will last longer, but the brushes will be my first attempt, and an infrared temperature sensor like the MLX90615 could solve the problem with detecting the bed temperature.
@@nicolascastro2701 induction is a great idea and I considered it too. However, I have no experience with it and decided to go with simplest way. We dont need too much power to keep the bed temp. in a range, but we need more than 150w to heat up it initially. It feels like we need a big induction coil. Actually I didnt think infrared sensor and its a great idea if you can make it work. I will check it too.
Pretty cool. Could easily make this from metal/cast parts frame and bolt together ext. With liner guides. You could make an add-on at 90deg. But attaches with it to make a T-H Frame design bed/construction. If the software is good then
Of course. There are stl files. It can be machined or printed.
A lot of things can be done. But step by step. First step is finishing development of the design and releasing Version1.
@@kadirilkimen hi... It's interesting machine good work. I can wait to see the v1.
When will be released v1.
and it will be open source...
@@Raeglar Hi, I was working on other projects to create fund and time for my open source projects. I am back to work on it again this month. I think it should be finished by the first week of April. And of course it will be open source.
This is awesome! Any idea if Klipper could run it?
I just noticed Klipper supports polar kinematics! :)
Yes it does and you can run klipper. It is a controller board agnostic machine. You can use any firmware or board you want. My first tests was on a simple arduino uno with grbl firmware.
i wonder if you can add 1 small stepper motor to the gondola holder for hotend?
imagine a non planar 3d print method but on the Z axis / outer frame.. it would be awesome!
Hi,
Endless modifications are possible. My main goal for now is finishing the improvements and releasing the version1. Then me or any other maker would make modifications.
@@kadirilkimen more challenge for you..... put more x gondola with their own stepper motor so can have multiple hotend for 3d print or other swapable thing!
Imagine simultaneous print from other (3 or 4) direction with the hotend angle at 45d so it wont collide etc with good gcode slice.
That would be one of it kind bro! :)
@@mrbulp Yes, You are absolutely right. I liked your idea and I also have different ideas to speed up printing process. Once the v1 released, all these ideas can have a chance to rise :)
@@kadirilkimen maybe this will help for bigger size as almost the same concept of your design would be like this th-cam.com/video/Bqz7bGFmptg/w-d-xo.html
@@mrbulp it looks like similiar. But it has more similiarity with a cnc router than thr PolarBear. In fact, it is almost a cnc router machine.
The biggedt difficulty to make polar bear bigger is the rotary table. If you build 2m diameter rotary table, you have two options. Dead slow and precise machine or fast but no any precision at all. I have a few ideas for it.
Will see by time.
please reference your version of GRBL you suggest and some $settings. id like to build this using arudino and cnc sheild
Hi, It's a plain GRBL actually.
Polar axis;
Polar axis has a 10:1 reduction.
You must calculate your steps /1 degree value.
Polar coordinates work in degrees. 1 rotation of polar axis means 360 degree rotation. However, GRBL doesn't know what degree is. It understands it as 360mm movement and accepts steps/mm value. You have to ender steps/mm but it will act as steps/1 degree. So, it is actually very simple.
Resolution of the polar axis is not fixed. it is infinity on the origin and lowest on the edge of the workbed.
Polar Bear designed to have a 260mm bed. which makes 816.814mm circumference on the edge. If I use 1/16 microstep, 1 rotation of the motor makes 3200 steps. 10:1 reduction makes 1 rotation of the polar axis in 32000 steps.
816.814/32000 makex 0.0255 mm resolution on the edge of the work bed and gets better towards the origin.
Linear Axis motors use 16T GT2 pulley. Which gives them 32mm movement in one rotation.
You have to calculate the steps/mm based on your stepper driver settings.
An interesting printer could also be part of a build/tutorial video ?
Yes, I am working on it and hopefully soon will post more videos about the project
Hey, awesome project... How much do you think it costs to build one with a 3D printing head?
Currently I am improving the design and will release a completed version 1 soon. Select a regular printer brand model to compare in your head. Think you are using same quality and cost parts with this printer. Then it should cost lower. because the PolarBear requires less components. All printable parts are possible to print in 1 kg filament. I hope this help you to figure out a number.
So far I've spent about $250 on all the hardware and PLA
Software and hardware background. Willing to help and build one. I have tons of small CNC parts. 3 CNCs and had 8 3D printers (not just two). Let me know. Let me know. Is there a link to start building the machine?
Hi, Currently I am still developing it. I will update completed version 1 soon. Please subscribe to this youtube channel and follow the GitHub page : github.com/kadirilkimen/Polar-Bear-Cnc-Machine
I will publish videos including an assembly tutorial when I finish the v1.
Ramping up the size of a cantilever machine is extremely problematic, I hope you overcome the problems and succeed with this!
This was the first prototype. I will release the second prototype as v1 which is improved a lot compared to this version. For cantilever approach, a polar machine uses half size of x axis compared to cartesian ones. This reduces the forces significantly. Therefore it is more managable. From nearest supporting wheel to the tool tip is not that long. Therefore cantilever is not the weak point of this machine. But the column is another story. I preferred a wider extrusion on the upcoming version and hopefully it will perform as intended.
I have some doubts about this project. Whether the polar coordinate machine can ensure accuracy when drawing a straight line? I think the polar coordinate machine needs x-axis and y-axis synthesis when drawing a straight line, while the Cartesian coordinate machine does not.
Hi,
Of course you can ensure the accuracy. In machining, straight or not, if it fits in the tolerance, then it means it is accurate.
In a cartesian machine, you can create a straight line easily, but have to subdivide curves into very small straight lines.
In a polar machine, you can create a curved line easily, but have to subdivide straight lines into very small curves.
As long as the final path fits into tolerances, you are good to go.
This is the post processor I developed for the PolarBear : kadirilkimen.com/thepolarbear/polartools/
This post processor is not the best one to convert a cartesian g-code to polar g-code. But it works fine for 3D printing and. If you are going to machine very precise metal parts, then there are cam software create very accurate polar g-codes.
@@kadirilkimenCan you give some names of CAM software that supports polar coordinates?
I'm intending to machine precise metal parts that would match well with the circular motion of a polar configuration. I'm highly inclined to build a sturdy polar CNC machine, but I still don't know if it's easy to find software to generate polar tool paths (specially free or open source).
I'm also considering adding a very short lateral axis to machine more acurate and symmetric straight holes. That would probably need some specific gcode to treat holes differently and use only X and Y, while the polar axis stays stationary. But I don't know if off the shelf CAM software can support that.
@@Pixelarter Hi, AFAIK, most cam software support 4 and 5 axis machining generates polar g-codes. I believe you can achieve what you need using a 4 axis setup and a 4 axis Cam Software. You can setup your polar axis as 4th axis. Unfortunately, I can't recommend a cam software.
How much would it cost to buy a parts kit for this version? I would be interested in developing it further from this milestone.
Hello, there is no kits available. There is a BOM in the github repo. You can buy the parts individually. I think the base machine would cost around 150 EUR. It depends on your buying preferences and selection of components. Please note that, base machine doesn't contain any power supply or controller board. It's up to you to choose something and do whatever you want out of it.
I have always wanted to know if a polar machine would print better gears.
May need to knock one of these together.
Thanks guys!
Without a polar-optimized g-code generator, I don't think a significant improvement. If we were able to generate polar-optimized g-code, it would improve the result significantly.
@@kadirilkimen That makes a lot of sense. It is all arc movements. Hate to think what an interpolated arc would look like.
@@amandahugankiss4110 Well, A cartesian machine has to interpolate any line that is not straight. Therefore any curve becomes an interpolated polyline. On a polar machine, It has to interpolate any straight line into tiny arcs. Since most g-code generators generate arcs as polylines, It is even worse for a polar machine... Arcs first becomes polylines and the polar machine makes them even worse tiny arc polylines. It is very possible to modify firmware to optimize this situations. But so far, I only managed to spare time for adding polar kinematics to Marlin firmware. Hopefully, soon will spend more time on it.
Just a modified version of cnc lathe in vertical axis 🙂
A little more complicated than that, but mostly correct :)
Merhaba Kadir bey .üzerine lazer ünitesi de eklenebilir mi?
Evet. Elbette eklenebilir. Projenin ana amaclarindan biri de bu. Fonksiyonel kafayi istediginiz gibi degistirebilmeniz makinenin ozelliklerinden birisi. Ben bir lazer unitesi tasarlayip kullanmadim, ama kullanimini engelleyen bir durum yok. Versiyon1'i yayinlamaya hazir oldugumda belki bir lazer kafa da tasarlar tasarimlarini paylasirim.
Hanzhen harmonic drive gear , over 30 years experience , robot gear
Hello, how is the conversion algorithm from Cartesian to polar gcode coordinates that you used basically? I would be interested in knowing it to collaborate.
It's open source. You can find it here : github.com/kadirilkimen/polarToolsJS
@@kadirilkimen If you could explain to me in a simple example it would be very helpful to me since I do not use the software tools with which the source code is made.
@@SebastianAdolfoCosta I already replied to your email.
I need polar bear rotating bed for metal additive machine
It's simple from mechanical aspects. But it is very complicated from controller side. I imagine you wouldn't use a regular FDM 3D printer controller to control a metal additive system. In best case, you will need an industrial cnc controller. Then driving a polar axis wouldn't be a big problem I believe. If you need help on it, please contact me through my website.
which software use in oprate this machin for cnc milling....
I created the g-code with a custom tool developed by me. unfortunately, there are no any good open source cam tool that allow you to create 4th axis toolpaths. I have plans to develop such cam tool, but it is too much work for a single developer :). needs time.
alhamdulilah...good work brother ...i am from india your machine...and design very good for selling purpuse ...
I'm Building this right now to try and make a clay 3d printer.
Please let me know how it goes. I had a clay extruder but didn't have a chance to try it.
@@kadirilkimen Did you make the extruder or buy it?
@@johnnyappleseed.4420 I got if from a company. But they stopped responding and it seems they are not selling it anymore. Also the product doesn't feel any good. I can't recommend it. But it is a simple stuff. Just like a syringe, there is a piston in a tube and a screw pushes it. all you need to do is a good reduction, so screw can have a very high torque to push clay thru a tube to the nozzle.
Any tips for printing the base?
I have been having the hardest time printing the base. It keeps messing up on the little square in the middle.
@@johnnyappleseed.4420 I believe you are talking about rotary axis motor pocket. If you are having adhesion problem, there is no any precise parts at the bottom. Just try to increase initial. Layer flow to squeeze first layer and get better adhession. If you print initial layer very slow, you should be good.
How can made that?
In total, it can made it by efforts of a lot of people in thousands of years 🧐
CORE XZ
Merhaba, proje harika, gerekli parçaları yazdırmaya başladım bile, sonuçları paylaşmak isterim, belki bir bir faydam olur. Bu arada dilersen İngilizce voiceover ları daha organik duyulur yapmak istersen seve seve destek olmak isterim. İyi çalışmalar :)
Selam, harika haber. Elbette paylasirsan cok sevinirim. Sanirim bu konuyla ilgili bir websitesi, bir facebook grubu filan kurma zamani geldi. Epeyce insan proje ustunde calisiyor. Voiceover konusunda haklisin. Bu ilk videoda cekinmistim. Ancak sonraki videolarimda kendim de bulunup kendim seslendirmeyi dusunuyorum.
Open source doesn't work for commercial applications. Open source works best for software developers looking to improve their resume. It sometimes works for mechanical engineers with no internship. I suggest you find customers who will purchase your products. Then you will have enough money to design bigger things. Economics is important and open source is only for those who have extra time to contribute.
These things are related to a lot of variables. There are hundreds of open source projects have a great success. I am not after some success or making a living thru these open source projects. My first goal was to make polar axis more common. I use open source tools everyday. Even most of common 3D printers are based on open source projects. I made this project open source as a respect to other open source projects those make my life easier. If I can get some support for it, it would be great. If I can't no problem.
@@kadirilkimen I don't mean you any disrespect. I like your design very much. So you should commercialize it and somehow make it easy to use. Open source is popular with young people but everyone eventually learns they need to feed and educate their children and you cannot do that giving away all your best work. Sharing your work with paying customers is a real joy. People who pay for your work appreciate it more. I have worked for many people and the best have this attitude, to make a profit fairly. Give it away and they don't respect your effort.
@@microdesigns2000 I didn't feel any disrespect and understand your point. I like working on projects and polarBear is one of my best. But not the only one and I am already doing what you said with my other projects ☺I am always open to share knowledge. I am happy that I have projects to share with people and other projects to handle financial aspect. There are always disrespectful people wether they pay you or not. But there are very positive people too. I try to stay with positive people.
n2n
TH-cam recommendation have really failed me if I'm only finding about this project after more than 6 months of following all kinds of unique 3D printing projects. Are you still working on this? I see the Patreon hasn't been very successful, so I guess you don't have the finances to develop the project further.
Thanks a lot! nice words to hear :)
Yes I am still working on this. Ok, I didn't do much thin in last 6 months, because I am in a transition mode from my old workstyle and new one. It's more like I didn't push the project or patreon much further yet. Because of that, my Patreon still have just a few supporters. Also there is a good support response other than Patreon.
Because the polarBear is more like a flexible machine, it requires a lot of firmware work to make it a simple to use machine. So I decided to develop "polar printer" that you can use off the shelf firmware. Here is the first test run : th-cam.com/video/kh6SwyJamWQ/w-d-xo.html
Robot voice ruined it, stopped 30 seconds in!