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  1. #1
    Hi all!
    First of all,thanks to this great community for all knowlege they provide,and numerous other guy's across internet such as Robocnc Jeremy Young and numerous others!!
    I'm in first stages of designing my cnc,and I dont wanna start numerous threads across forum,so I will ask questions and ideas here.
    I will use mainly this machine for guitar building,footprint about 1250x1160,wich will give me approx 1000x830mm of work space.My intention si to use this machine for hardwood and occasionaly brass and alu,but primarly hardwoods.
    It will be sort of desktop machine,the table will be made of wood.
    I intend to use 1170mm 2010 ballscrews on y,1150mm 1610 on x and 300mm 1605 on z.Hiwin hgh20c all around.All from fred!
    My main concerns come with electronics side,to go with steppers,hybrid servos or servos.
    I'm gravitating more towards hybrid servo side.I studied Lichuan HS motors,3phase nema23 3nm and 2phase nema34 4.5nm,down side is that they dont make 4.5nm HS in 3 phase.Another downside is drivers,3phase have rated max voltage of 50V,wich mean I would have to use 48Vdc power supply,when I calculate max voltage for nema 34,i get 57Vdc,how much will motor loose speed with 48 instead of 57v?
    Another concern is controller,I more and more gravitate to standalone controllers,such as ddcs 1.3,but they dont support dual axis homing.second option is tomatech 4axis TAC-1004M Milling controller.Does anybody have expirence with this stuff?
    Here is design half finished still need to position limit and home switches,and fk/ff supports for x axis,and dragchains.










    Machine spec.
    1250x1160 mm footprint
    Steel frame 60x60 and 180x80(100x80 and 80x80 welded together If i dont find 180x80),epoxy leveled.
    Steel plates 20mm thick,except z axis backplate wich will be 25mm.Not sure yet if I will cut all alu at home,or will somebody do It for me.prolly the second option because z axis back and frontplates should be milled.
    Hybrid servo drives
    2 2010 Ballscrew on y,belt driven 1:1 4.5nm
    1 1610 ballscrew on x,belt driven 1:1 3nm
    1 1605 ballscrew on z,direct drive 3nm
    Hiwin Hgh20ca all around
    Alu profile for x axis,ITEM24 160x80
    2.2kw spindle
    standalone cnc controller
    When I started thinking about cnc build,I want it to be as slipstream as possibile,no sticking parts,low overhang on z axis etc.
    Looking for critiques and opinions!!
    Last edited by Scustom; 31-07-2019 at 08:42 PM.

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