Thread: Recommendations for Z Axis?
Im very Happy today! I (think that) have some good idea for my metalworking machine (will start an building log after receive the linear profiles) and found some epoxy supplier in my country.
About Epoxy, think that this specs are enough for the machine?
Hardness Shore : 82 Shore
viscosity 35—50000 mPas
The hiwin rails works ok at top and bottom like the Chinese profiles? I have a new idea about the gantry. Will draw it tonight and will show you guys.
Enviado desde mi ASUS_Z00AD mediante Tapatalk
What about max weight that hiwin HG20 support?
i will use two nema23 steppers (one on each side) because think that the weight will be a little high for just one motor.
will try to use 70V, as i will be using am882 drivers
if weight are too high i think that fixed Gantry will be the solution, but dont know if fixed are better.
Last edited by samsagaz; 26-07-2016 at 01:28 AM.
I don't know why are you going backwards with the build. There is enough build information on forum to build a super-duper machine from scratch.
I or C is not stronger than box section, to begin with... I have build uber strong machines from 100x100x4, most people will use 60x60x4. I say ~80x80x3 or 4 is ideal, as it simplifies construction / no diagonal bracing / and is easy to manage at home.
Look my signature build 1. That machine slices through aluminum without a whisper. Plus i have uploaded the plans for free, so you could save yourself a tremendous amount of time, cause all is fully scalable without any modification up to ~ 1200mm wide and 1200mm long. For longer you just have to change the screw with bigger /20/ and if full size just change sides to rotating nuts, which you could see how is done from my project 2 in the signature.
That is a time proven design done with the help of the knowledgable people here, a lot of research and design time. I doubt you could achieve even 1/3rd of that if you continue to buy without draw, think and decide first. Sorry to have to tell you that.
Every small mistake now, translates as days work to fix it later. and money lost, due to buying the improper stuff
Last edited by Boyan Silyavski; 26-07-2016 at 04:28 PM.
I understand dear Silyavski, i just trying to use materials that can purchase in my country, :/
Using I steel and weld a 10mm plate in one side i will get a box section like you say, but maybe with more weight.
I don t need high speeds, as its just for home projects, i dont need to cut/route fast!
Will check your project #1 again..
Last edited by samsagaz; 26-07-2016 at 04:52 PM.
Not that you will cut at those speeds but machine needs to be "snappy" with good acceleration. Which is sth i believe you have not considered. At the beginning i was also not aware of that fact. Good that people pointed that to me. Otherwise some jobs will take eternity , too much time even for home.
Now having that in mind, do some research about the efficiency of stepper motors, your load, the motors. Under load it will have only a couple of hundred useful RPM. So do your calculations from this.
What size will be your machine???
PS. here is a link to a calculator, have not checked it extensively but seems right http://techref.massmind.org/techref/...r/estimate.htm
Last edited by Boyan Silyavski; 26-07-2016 at 06:37 PM.
Last edited by JAZZCNC; 26-07-2016 at 09:23 PM.
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