Access to your anti-backlash nut is easy, but I'd be concerned about that thin little piece of aluminum transferring motion from the screw to the Z axis carriage. Probably ok for most operations I guess.
hi all its my first time to build the cnc some part already bought if there any suggestion for improvement please tell me thanks here list of the part with the cost and some of the picture
1.JMC SERVO 20BIT 400Watt
Power: 400W
Speed: (Rated/Max) 3000/5000rpm
Price : 190 USD EACH WITH THE DRIVER
2.TBI OFU BALL SCREW 2005 C5 GROUND WITH C5 BALL SCREW SUPPORT ANGULAR BEARING
970mm Double Nut Ground C5(OFU new version compare to DFU)
Price: 210 USD each For 1 meter Length
C5 Angular BallscrewSeat:30 Dollar Each
3.ALUMINUM EXTRUSION 100*200 ,100*100,80*160
100*200= 82 Dollar Each =2 Unit
100*100= 40Dollar Each =3 Unit
80*160 =32 Dollar Each =1 Unit
4.2,2KW SPINDLE
170USD With VFD
5.HIWIN CGW20CC 20MM WITH STAINLESS STEEL STRIP RAIL
CGW20CC BLOCK 20mm=15 Dollar Each =8 Unit
CGR20R With Steel Strip =34 Dollar For 1 Meter=4X1 meter
6.25MM AND 12MM ALUMINIUM SHEET 6061T6
370mm*480 25mm Thickness 2Unit
390mm*600 25mm Thickness 1 Unit
480mm*510 12mm Thickness 1 Unit
Total All=160 Dollar
7.FOR Z AXIS IUSE LINEAR ACTUACTOR WHICH I GOT FOR FREE USING 2005 BALL SCREW WITH 4 15MM BLOCK HIWIN
8.ESS Smooth Stepper Around 200 USD
Total Damage for now
1700 USD
size 1 meter x1 meter effective dimension 60cm*70cm
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Last edited by teamloks1; 03-01-2019 at 05:35 AM.
Access to your anti-backlash nut is easy, but I'd be concerned about that thin little piece of aluminum transferring motion from the screw to the Z axis carriage. Probably ok for most operations I guess.
haha yeah im still thinking about nut holder design maybe i should do V shape
I would think a V shape would work better.
ok for my concern now is the spindle and y axis block which is far do i need to make it more near to spindle i would lost around 100mm working dimension for it
At those price i relly would like to know where you are sourcing your aluminum extrusion
Teamloks1, where are you located?
im from Malaysia
Thank you,
The prices you quoted for the extrusions would
be too good to be true here in the US.
I think one point of concern could be the side-to-side
movement of the gantry held in place. Even though
it has 10 bolts per side at the gantry, the bottom is
(structurally speaking) not a 'fixed end'. It relies on
the rigidity of the side plates and becomes a cantilever.
Moving the linear rail to the top slot would shorten
that cantilever. (Suggestion 1)
Adding another rail to the bottom slot would make
it a (vertical) beam with two somewhat fixed ends.
(Suggestion 2)
75mm x 150mm x 600mm extrusion is 100$cad = 75$ usd here in canada,
thanks for suggestion,and yes the second suggestion is my original design but i saw somewhere said i dont need double rail for y axis so i go for single rail since i already order some item maybe i opt for suggestion 1
yeah got just got quote from my reseller that around 28$ for 1 meter length
some of part already arrive its TBI motion 2005 ball screw
just some side view
Whats with all the extra bearings on the X? IF I'm looking at it right you have two rails and four sets of bearing blocks on one side of the machine. I'm assuming the same on the opposite side. This is not a good idea. It is very difficult to get the linear rails in plane and adequately parallel with each other mounted directly to extrusions. If you don't think the rails or bearing blocks are suitable for the loads applied as a single rail you would be far better off addressing that either by larger blocks or up sizing both the bearing blocks and linear rails. You can find threads on here where guys have tired to do so with much heartache, extrusions are simply not that precise to allow closely mounted rails like you have here.
I'm not a big fan of the Y axis arrangement either as it simply wastes hieght in the Z. You will likely loose close to two inches in Z with the wrap around gantry (Y) saddle. I'm als not a big fan of added complexity that offers little in return.
i think will go with this design since i can tuck the servo
I like that latest design. Hope to see it running soon.
Do remember you need to keep in mind drag chains and other bolt on components. Often these are left as after thought and it often shows.