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Not really. You will probably want to wire the motors as bipolar parallel. The driver does not produce enough amps for that motor to run at full power.
John
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Just a question,
Will this 4 Axis CNC Stepper Motor TA8435H Driver Board
http://cgi.ebay.co.uk/ws/eBayISAPI.d...26ps%3D10#info
will be compatible with this motors,
http://www.slidesandballscrews.com/n...d4593d1052e3dc
Thanks
Not really. You will probably want to wire the motors as bipolar parallel. The driver does not produce enough amps for that motor to run at full power.
John
Thanks for the reply, my plans is to build one Flying Gantry from Rockcliff. I have decided for this CNC model because it will be used for wood RC airplanes. And with this model I can go longer to cut fuselages for longer airplanes.
I'm planing to build this CNC with 47" long x 24" wide (1200mm x 600mm)
http://i118.photobucket.com/albums/o92/antfag/cnc.jpg
Now for the board above mentioned this one: http://cgi.ebay.co.uk/ws/eBayISAPI.d...26ps%3D10#info
which one of this motors should I go for?
http://www.slidesandballscrews.com/p...TH56-2008B.pdf
or this
http://www.slidesandballscrews.com/p...TH56-3008B.pdf
Will they be ok to handle this CNC or are they to powerful with to much power consumption.
The TH56-2008B motor matches the driver the best. The driver is limited to 2.5 amps output. The bigger motor will not produce any more power than the small one due to the output limit.
You can use the 2.8 amp motors with the 2.5 amp driver. They won't quite produce full torque, but close.
John
After some investigations I have decided not go with a motor under 200 ozi, I have decide for this one:
http://www.slidesandballscrews.com/p...TH76-3008B.pdf
This CNC is not for professional use is only for some testing. I also notica that the limitation is the drive for this motors.
This is a 4 phase motor, now I need a drive for it. any ideas?
It has an opto-isolated breakout board built in, as well as 4 drives and good support. I set one up and it went pretty smoothly, although you're pushing the envelope trying to run such a large machine on such small motors. Run the motors in parallel mode, which will give you the best torque, and give it a 48v power supply, which will get the most out of the 540 drive.
Andrew Werby
www.computersculpture.com
Originally Posted by jhonniewalk
Hi Andrew Werby,
Thanks for the reply, because I don't understand nothing about CNC machines all the help that I get is welcome.
As I stated before the main purpose of this machine is to cut RC Airplanes parts, and if I want to cut 1 meter fuselage using the rockcliffmachine Flying Gantry http://i118.photobucket.com/albums/o92/antfag/cnc.jpg I need at least 1200mm long CNC since the maximum cut throw will be around 1 meter (I think). Unless there is another way to cut longer parts with smaller Router CNC any trick? Can I cut half them pull back and cut the other part? is this possible?
And Andrew, as I mentioned before I don't understand nothing about CNC, I'm reading a lot to get the best information possible, but more I read more confused I geteveryone have different opinions. What kind of characteristics motor/drive do you think this machine needs?
but that's a pretty large machine to run on such small motors. I couldn't see your photo (it just hung) but to have any stiffness a gantry that large will have to be somewhat heavy. It needs to carry the Y and Z axes, plus the spindle, and cut with a minimum of deflection. To move this around quickly, with the ability to change directions without losing steps (the bane of stepper systems) you need motors that have enough torque at
high speeds. Steppers typically exhibit their best torque at standstill ("holding torque") which is how they are rated (that's the 200 oz-in). When they are turning, it falls off rapidly with speed.
While it's possible to "leapfrog" your cuts so as to do large parts with a small machine, it's easy to lose registration that way, and it's to be avoided if possible. Usually, you find the NEMA-23 200 oz-in motors on small mills like the Taig; they work fine for that, but for something as large as the machine you're building, something like a NEMA-34 650 oz-in stepper motor would be preferable, if not a servo. Wood likes to be cut rather quickly, so if you've geared down the machine or used fine-pitch screws to accomodate your small motor's lack of torque, you risk charring from excessive dwell.
If you haven't bought anything yet, spend some more time researching the sort of machine you want to build (this is a good place to do that) and see what other people who have built a CNC router that successfully cuts out the sort of parts you're making have arrived at.
Andrew Werby
www.computersculpture.com
i have a question.....firts i don't know where to post it on here and second its not someting that is asked every day. so anyway, i own a chainmail business. ido several different weaves and am making my rings by hand for the last eight years. what i want to do is build a machine that will coil my rings in different sizes and cut them as well as dump them in a bucket. i have some ideas as to how to go about it but i am looking for better ones. i have always thought that the more ideas you have the easier it is to find the final one that works best. also if anyone knows of a way to make this machine weave them together as well that would be cool. i have several orders that it would really cut down production time if i could build this so thank you in advance for any help that you may offer.
Again Andrew Werby thanks for your help, at the moment I didn't buy anything.
I will follow your advice and read more and search this forum for more information on other CNC builds.
Thanks
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