Closed Frame Machine Design

[Boyan Silyavski]

The way i see it your best bet is to make a simple fixed gantry machine from aluminium extrusions like the one at the picture bellow




And maybe make it more miniature and enclose it like that:




So at the end you finish with a benchtop CNC.


My advice is thought to use at least round supported rails /SBR, TBR..20 size/ , even better, Hiwin 20 / much more expensive and better/ and 0.8kw water cooled spindle. Use also 3nm nema 23 motors and Am 822 drives, PSU for motors non regulated at 70VDC



I mean when you will be spending money make a real machine that will later have some value. Otherwise go ultra cheap all in one board with drives, 24v motors, PC ATC power supply , nema 17 motors. A micro CNC, similar to 3d printers. The middle way between what i am suggesting, is to spend your money for nothing.

[ammaratef45]

The way i see it your best bet is to make a simple fixed gantry machine from aluminium extrusions like the one at the picture bellow




And maybe make it more miniature and enclose it like that:




So at the end you finish with a benchtop CNC.


My advice is thought to use at least round supported rails /SBR, TBR..20 size/ , even better, Hiwin 20 / much more expensive and better/ and 0.8kw water cooled spindle. Use also 3nm nema 23 motors and Am 822 drives, PSU for motors non regulated at 70VDC



I mean when you will be spending money make a real machine that will later have some value. Otherwise go ultra cheap all in one board with drives, 24v motors, PC ATC power supply , nema 17 motors. A micro CNC, similar to 3d printers. The middle way between what i am suggesting, is to spend your money for nothing.

Thank you very much .. can I find CAD file for design like you posted?

[Boyan Silyavski]

Thank you very much .. can I find CAD file for design like you posted?

GRABCAD is an excellent place to search for something.