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09-02-2014 #2
Ok I'll make this bit easier for you and tell you specs that I know work for this size and type machine.
Base frame: 50x50 or 60x60 x 3 or 4mm Steel. (Forget Ply wood waste of time)
Gantry: Steel or Alu profile.
Z axis: 20mm thick Aluminium no less.
Rails: Ideally Profiled Linear rail 15 or 20mm. At Minimum 16mm round supported rail.
Ballscrews: X & Y axis(upto max 1500mm length) 16mm dia 10mm pitch (Above 1500mm) 20mm Dia 10mm pitch.
Z Axis 16mm Dia 5mm pitch.
Motors: 3.1 or 4Nm Nema 23 on All axis. ( Twin Slaved motors on Long Axis)
Drives: 75-80Vdc ideally good quality Digital drives Like Leadshine AM882 or EM806.
Main PSU for drives: 65-70Vdc Un-regulated with Amp rating aprox 70% of total number of motors rated Amps Ie: 4 x 4.2A motors =16.8/80%=11.5A
Secondary PSU for E-stop, limits etc: 12 or 24Vdc 3-5A switch mode.
Breakout board(BOB): Good quality not cheap rubbish. PMDX 126 is only one I'll fully recommend but others Like DIYCNC OPPB V3 can be Ok.
Cable: Shielded cable for Motors and Limits/E-stop switches.
Spindle: 2.2Kw water cooled Spindle and VFD is best value for money spindle you'll find, nothing else comes close.
Control Software: Mach3 or Linux cnc. Mach3 has the best support for new users and is easy to setup. Linux cnc don't use so won't comment.
Cam software: Mostly Dependant on use but Vectric or Delcam software for mainly wood use, Cambam is good free/cheap software.
Suppliers are many but word of advise is to buy ballscrews and linear rails, spindle from China has they are cheap. All electronics Drives, motors etc from Uk or states(pmdx) for warrenty reasons and ease of replacement.
Good luck and keep reading and asking if unsure.Last edited by JAZZCNC; 09-02-2014 at 12:49 AM.
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