Topic: LEAD SCREW DESIGN FOR HIGH RESOLUTION
HOW SHOULD WE SELECT THE LEAD SCREW 'DIAMETER', 'LEAD' AND 'PITCH' IF WE WANT TO ACHIEVE A LAYER ACCURACY OF AROUND 20 MICRONS?
- pirvan
- Member
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Re: LEAD SCREW DESIGN FOR HIGH RESOLUTION
You do realize that this will only "improve" your vertical resolution, right?
Your X/Y resolution will still be governed by the positional accuracy of your printer, and mostly by the diameter of the nozzle. A .35mm nozzle will output a .42mm wide trace. Therefore a single dot/pixel or line can't be any smaller than 420microns (21x larger than your layer height).
Having said that, I have a SF1204 ballscrew on my Sd3, and I can move it in 10 micron increments (8 steps).
To print or, 3D print, that is the question...
SD3 printer w/too many mods, Printrbot Simple Maker Ed., FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.
SD3 printer w/too many mods, Printrbot Simple Maker Ed., FormLabs Form 1+
AnyCubic Photon, Shining 3D EinScan-S & Atlas 3D scanners...
...and too much time on my hands.
Re: LEAD SCREW DESIGN FOR HIGH RESOLUTION
I agree we cannot edit XY resolution, Pirvan. By 8 steps do you mean 8 microsteps of the stepper? And why are you using a ball screw? A normal acme screw would not give that accuracy? And you mentioned the wide trace of the nozzle, what about the Z trace? That depends on the speed only right? So if we need to go for very low Z steps, we need to increase the speed of nozzle movement? Some commercial printers advertise 10 micron and 20 micron layer resolution as their unique feature. But then why do most printers use only 100microns when a small change in lead screw design can achieve much finer resolution?
- wardjr
- Moderator
- Offline
Re: LEAD SCREW DESIGN FOR HIGH RESOLUTION
Just because the bed is capable of moving at that resolution, doesn't mean the rest of the system is capable of utilizing it. The biggest drawback is the molten oozing plastics ability to comply with that degree of precision.
Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions
Re: LEAD SCREW DESIGN FOR HIGH RESOLUTION
So what modifications need to be done for lets say 20micron Z movement of bed?
- wardjr
- Moderator
- Offline
Re: LEAD SCREW DESIGN FOR HIGH RESOLUTION
A completely different printing process utilizing an entirely different material. 20 microns is simply beyond and realistic expectations of any FDM style printer. Achieving 20 micron precision of motion is difficult enough. Getting extruded plastic to comply is in my opinion, not a real possibility. The bigger question is, what are you planning to print that needs that level of precision?
Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions
Re: LEAD SCREW DESIGN FOR HIGH RESOLUTION
I got curious when I read about leapfrog Xeed 3D printer having 20 micron layer resolution. Checkout the link: http://www.lpfrg.com/en/blog/xeed-10-mi … t-quality/
I am really curious how they achieved it in FDM style.