NordicCNC's build log

[Scustom]

Hi nordic
Why dont you consider doing bed insted of 200x80 similar what robocnc on youtube did?

[NordicCnc]

Hi nordic
Why dont you consider doing bed insted of 200x80 similar what robocnc on youtube did?

Hello! I am using 200x80 because it is very stiff. I could of course do it as you describe but I would be sacrificing stiffness. The base frame stiffness is key to a good machine! I also want to keep the part count as low as possible.

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[NordicCnc]

Does anyone know what size cable drag chain is preferred? I am thinking about 25x77mm: https://www.aliexpress.com/item/5300...264066ec24hVi7

[AndyUK]

Does anyone know what size cable drag chain is preferred? I am thinking about 25x77mm: https://www.aliexpress.com/item/5300...264066ec24hVi7

Depends on the amount and size of your cables! I measured the diameter of each, approximated them as square boxes, and then calculated the internal area needed. Then you want to fill to about 60%.

[NordicCnc]

Short update to show the final design. NO MORE CHANGES! Started ordering parts today, I am excited.



Not sure if the frame and/or table needs more bracing. Please give me some advice!

[NordicCnc]

I know I said no more changes but I was wrong. I modified the frame and bed quite a bit. All parts are now ordered and the first parts will be arriving in the beginning of next week. The bed will be adjustable in height to allow for higher work parts if ever needed. This is a safety measure so that I don't regret the design. Table will be adjusted with scissor lifts and should be quite easy to realign. I will also add some triangle bracing to the frame, which are not shown in the pictures. These will be made of steel.

Oh and by the way, budget of 8000€ was not enough, which I expected anyway. It will be closer to 10000€. I am still happy!

Also JAZZ was right in the beginning of the build log about the total weight. It will be over 400kg once everything is assembled.



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[Kitwn]

Can someone of yous enlighten me as to why nobody uses them

Derek

You'll see some diagonals in welded steel frames but I suspect with aluminium it's the practicality as you sugest. If the profile manufacturers made the fittings for it and the builders bought the saws for it then you'd see nothing else.

[NordicCnc]

What kind of signal wires are recommended between the controller and AC servo drives? Would ethernet cables be good? Also do they need to be shielded?

Cat5 or Cat6?

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[JAZZCNC]

What kind of signal wires are recommended between the controller and AC servo drives? Would ethernet cables be good? Also do they need to be shielded?

Cat5 or Cat6?

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Cat5 or 6 will work provided it's shielded and you ground one end of the shield at the star point.

[pippin88]

Most AC servos have manufacturer made cables between the motor and drive.

Are you taking about within the control box? Or outside?