Hi. Did you have any problems of syncing those y-axis belts/motors together? I'm considering making belt-driven CNC but with only one motor for every axis. (with axle under the table) I'm little worried about that if you make the y axis with two motors, can you really sync them together properly...
I just found this comment. Sorry for the delay. I have had zero issues with the two motors being out of sync. quite literally the check of a box in mach3. Have you started?
you dont have to use servos, take a look at franco 's channel where he shows the difference between open loop - and closed loop servo motors! This would be very interesting for you, I think ;-)
What is the width of your belt it looks 30mm? Also have you machined and aluminum and how did that work for you? Also Since you have had this machine for a while how has the design been so far? Belts reliable? anything you would have changed? Did you change the drive type?
I didn't I just deal with the lack of precision. I made some attempts at compensating with the software but didn't ever find anything I wanted to keep.
Good question.... I just looked and I have to go pretty far back back to find one and the machine has lots of upgrades since then... I'll make a video just for you... any requests?
@@MatterMage Thank you for your answer. I am replying a bit late, sorry. I am interested in the transmission system: the belt drive in action, with a focus on the drive, the pinions, the belt while operating and also the system max speed, acceleration, ... Thank you
Hi Nice to talk to you You did a very nice cnc table and I'm interesting to ask you a question about the linear bearing open end ? Is this type of bearing not accurate or make a backlash during cutting? I'm going to build my table but I'm confused between open end bearing and profile guide rail. Do you think If I make twice 25 mm round bar with 4 open end bearing in each Y axis side ,,gonna fine backlash
01:57 i don't think this ist a 200Nm-Motor!!! :-) That would mean, it could heave up 20kg in 1m distance without any gears ... or do I get something wrong here?
Yea I was caught off guard by that, too. My BMW has 400 Nm in a 3l motor, however it's not electric so I was not sure ^^ but 6 Nm sounds a lot more reasonable :D
Servus! Einen Kilo auf einen ein Meter langen Arm gehängt gibt 9,81Nm ("die 9,81N wirken auf den einen Meter"). Das Muss man sich erst mal geben: Halt mal 20kg auf ein Meter Entfernung - Oder 200kg bei 10cm langem Ärmchen oder 1000kg bei einem Pully-Radius von 2cm ... ;-) And here for the English folks: Hang one kg in one meter distance to the center and you have 9,81N x 1 m = 9,81Nm - it´s as easy as that ;-). My steppers are nema 35 and about 15cm x 10cm in size, they have 9Nm and it is idiotic and COMPLETE OVERKILL!!! I only bought it because of very bad advice.
@@MatterMage 250 oz in doesn't equate to 6Nm either, you had it right at first, I think, just needed to say 200 Ncm (2 Nm) instead... :) Awesome job on the machine, I'm curious how the belt drive would do for accuracy if you were pushing speeds, but it's a very cool setup.
I have not published much because it's "mine" and it's all in solidworks. I might release it after my next big upgrade because it will be kind of a different animal after that
I was using a GT2 6mm belt drive that worked well at moving my y-axis but it had some trouble with stretching and tearing. I have since changed to 15mm wide belt, but when I tensioned the belt it created to much pressure on my nema23 stepper, now realize I need a gearbox for my application.
@@Gvalenz12 Hi, about your trouble, could you fix it? I am usin a 10mm gt2 belt but I have stretching problems, it bounces back and forward, i use nema 34 8,5 newton motors, i am thinking about using htd5m 20mm belt with steel soul and se if that solves the bouncing issue I have. What do you think about that solution in your experience?
Hello @@CarlosManitasV I ended up using a 15mm wide timing belt with steel core, from Amazon. It worked out well for me I added a 10;1 gearbox also from Amazon. I seen alot of talk about being inaccurate because of backlash/slop in the plantary gearbox, but it has good repeatability for my application (it's under 1/32"). The gearbox is on a nema 23 and it is strong. If you are using a nema34 I would probably go with a 20mm wide belt and it might not even need gearbox. Let me know if you have any questions and how it works out for you.
@@Gvalenz12 thanks a lot for answering. I will go for the 20 mm belt and see how that goes. To be honest my plan is to use rack and pinion in the near future. But first I would like to know go to solve those issues in belt driven cnc router's. Because here where I live, most of the cnc routers are made with timming belts and there is a lot of the same issue with them. So let's see if I can come up with a good solution for it. Thanks man!!
@@J1I9M7M4Y I have geared steppers so I didn't need to go that big.... and other than that o just went a little bigger than what was being used for hobby stuff... shapeko etc. My belts and over all stiffness are not super great so I couldnt use anything bigger even if I had them. When I get around to rack and pinion I may go bigger
@@MatterMage Ok. Im building an all steel frame (including gantry) router with r&p drive for x and y. I guess i just have to go for Nema 34 12nm for the x and y. For z a nema 23 will be enough i belive. It might not become very fast but since im not going to do any large scale production it`s no big deal. The work space will be about 900x900mm. Thank you for sharing your build! Im subscribing!!
Nice show and tell....great idea with the controller box pullout lockout...hadn't seen that yet....sweet build.
Can't believe parallel ports are still used for this.
And still going.
Great build thanks for sharing
very cool. just found a deal on some timing belts so I'm that much closer to know what to do with them :)
Hi. Did you have any problems of syncing those y-axis belts/motors together? I'm considering making belt-driven CNC but with only one motor for every axis. (with axle under the table) I'm little worried about that if you make the y axis with two motors, can you really sync them together properly...
I just found this comment. Sorry for the delay. I have had zero issues with the two motors being out of sync. quite literally the check of a box in mach3. Have you started?
you dont have to use servos, take a look at franco 's channel where he shows the difference between open loop - and closed loop servo motors! This would be very interesting for you, I think ;-)
Coooool
What is the width of your belt it looks 30mm? Also have you machined and aluminum and how did that work for you? Also Since you have had this machine for a while how has the design been so far? Belts reliable? anything you would have changed? Did you change the drive type?
25mm. Have not tried alluminum yet. Z axis is weak. not worth the try till after I fix it.
Steven Sampson has the machine particulary the belts held up with the use over these past months? Any backlash problems?
Tq
Where did you source the aluminium wheels for for the z axis?
Great design btw 👍
Open builds... though that setup was not strong enough. It looks nothing like that now.
How did you compensate the backlash of the planetary gearboxes?
I didn't I just deal with the lack of precision. I made some attempts at compensating with the software but didn't ever find anything I wanted to keep.
is there a video of the machine actually moving?
Good question.... I just looked and I have to go pretty far back back to find one and the machine has lots of upgrades since then... I'll make a video just for you... any requests?
ua-cam.com/video/uV7-AcvqMvQ/v-deo.html
@@MatterMage Thank you for your answer. I am replying a bit late, sorry. I am interested in the transmission system: the belt drive in action, with a focus on the drive, the pinions, the belt while operating and also the system max speed, acceleration, ... Thank you
Hi
Nice to talk to you
You did a very nice cnc table and I'm interesting to ask you a question about the linear bearing open end ?
Is this type of bearing not accurate or make a backlash during cutting?
I'm going to build my table but I'm confused between open end bearing and profile guide rail.
Do you think If I make twice 25 mm round bar with 4 open end bearing in each Y axis side ,,gonna fine backlash
I'm not entirely sure what you are asking but the bearing have been great.
Sweet. Where did you get the belt?
Best Matt
Belting online in the UK
Nice design! What about those belts? Are they rigid enough to withstand cutting forces together with accel/decel forces?
Belts are plenty strong and don't stretch over time like chain.
I'm using O4C chain and it works well with no stretch. Next time though I'll use rack and pinion.
01:57 i don't think this ist a 200Nm-Motor!!! :-) That would mean, it could heave up 20kg in 1m distance without any gears ... or do I get something wrong here?
Correct. Thank you for catching that. I had to look it up. It was near 250ozin... around 6Nm. After the gear box its capable of around 40Nm.
@@MatterMage Gearbox! Very clever! Good idea!
Yea I was caught off guard by that, too. My BMW has 400 Nm in a 3l motor, however it's not electric so I was not sure ^^ but 6 Nm sounds a lot more reasonable :D
Servus!
Einen Kilo auf einen ein Meter langen Arm gehängt gibt 9,81Nm ("die 9,81N wirken auf den einen Meter"). Das Muss man sich erst mal geben: Halt mal 20kg auf ein Meter Entfernung - Oder 200kg bei 10cm langem Ärmchen oder 1000kg bei einem Pully-Radius von 2cm ... ;-)
And here for the English folks: Hang one kg in one meter distance to the center and you have 9,81N x 1 m = 9,81Nm - it´s as easy as that ;-). My steppers are nema 35 and about 15cm x 10cm in size, they have 9Nm and it is idiotic and COMPLETE OVERKILL!!! I only bought it because of very bad advice.
@@MatterMage 250 oz in doesn't equate to 6Nm either, you had it right at first, I think, just needed to say 200 Ncm (2 Nm) instead... :) Awesome job on the machine, I'm curious how the belt drive would do for accuracy if you were pushing speeds, but it's a very cool setup.
Does it have 2 belts on the long axis ? How wide are the belts?
Yah both sides. 25mm
Can share files of printed files ?
nice
Hi, what kind of precision you have on wood routing? have you tried on aluminum?
Pretty low due to the z axis not being up to snuff. new parts in soon. I'll give new fiugres after the fix. Have not tried aluminum.
I'm around 1/10 mm. Just tried some aluminum the other day and it cuts just fine but the backlash is exaggerated.
@@MatterMage Is the backlash on the z-axis or on the other belt driven axes?
@@forloop7713 it was on the x and the y due to the gear reduction used. Most of this has been removed.
@@MatterMage would be great your current thoughts and mods. Interesting project
hey, I really really like your CNC, wonder if you can share your 3d models please.
I have not published much because it's "mine" and it's all in solidworks. I might release it after my next big upgrade because it will be kind of a different animal after that
Do you provide the design of the belts?
Nice work.. you still got your ears on?
Ears?
@@MatterMage This is amazing work Man! You are smarter than you look bro!
Belts!
@@paramtrx9558 It's has quite a few updates since then, but still going strong. Thanks for the backhanded compliment.
@@MatterMage Ha
Where did you find those belts and pulleys at? And how much were they?
Also what's the bore size. I need a 8mm
They are everyware
Anybody know what size of belt would it be necessary to avoid the use of gearboxes?
I was using a GT2 6mm belt drive that worked well at moving my y-axis but it had some trouble with stretching and tearing. I have since changed to 15mm wide belt, but when I tensioned the belt it created to much pressure on my nema23 stepper, now realize I need a gearbox for my application.
@@Gvalenz12 Hi, about your trouble, could you fix it? I am usin a 10mm gt2 belt but I have stretching problems, it bounces back and forward, i use nema 34 8,5 newton motors, i am thinking about using htd5m 20mm belt with steel soul and se if that solves the bouncing issue I have. What do you think about that solution in your experience?
Hello @@CarlosManitasV I ended up using a 15mm wide timing belt with steel core, from Amazon. It worked out well for me I added a 10;1 gearbox also from Amazon. I seen alot of talk about being inaccurate because of backlash/slop in the plantary gearbox, but it has good repeatability for my application (it's under 1/32"). The gearbox is on a nema 23 and it is strong. If you are using a nema34 I would probably go with a 20mm wide belt and it might not even need gearbox. Let me know if you have any questions and how it works out for you.
@@Gvalenz12 thanks a lot for answering. I will go for the 20 mm belt and see how that goes. To be honest my plan is to use rack and pinion in the near future. But first I would like to know go to solve those issues in belt driven cnc router's. Because here where I live, most of the cnc routers are made with timming belts and there is a lot of the same issue with them. So let's see if I can come up with a good solution for it. Thanks man!!
Nice build! However, i don´t think the motor is 200NM.. A Nema 34 is up to around 12NM.. 😂
Yah some one called me out in comments early on. Good catch.
@@MatterMage How did you find out how big stepper motors you needed?
@@J1I9M7M4Y I have geared steppers so I didn't need to go that big.... and other than that o just went a little bigger than what was being used for hobby stuff... shapeko etc. My belts and over all stiffness are not super great so I couldnt use anything bigger even if I had them. When I get around to rack and pinion I may go bigger
@@MatterMage Ok. Im building an all steel frame (including gantry) router with r&p drive for x and y. I guess i just have to go for Nema 34 12nm for the x and y. For z a nema 23 will be enough i belive. It might not become very fast but since im not going to do any large scale production it`s no big deal. The work space will be about 900x900mm. Thank you for sharing your build! Im subscribing!!
@@J1I9M7M4Y nice. You will need to gear them down a but so nema 34 should be very adequate.
what belt width are u using?
25mm
@@MatterMage thx
@@MatterMage with 25mm width... double belt has no sense?
@@MatterMage there are no issues with synchronization of motors at the Y axis?
@@user-do6co4fi7r nope.
200 Nm motor??? man are you sure??
250 oz inch... 6Nm . Someone else caught that a couple comments down. Thanks for keeping me honest