Since posting my original Z upgrade I wanted to improve it (@TommyG showed me up ) From there I decided to learn how to use fusion a bit better. To cut a long story short, I have made a revised design of the linear Z axis for the shapeoko and remove the confusion behind all the designs floating in the original topic.
Now there was nothing wrong with the first design but this is heavy duty⌠Itâs not as pretty as Tommyâs design but functionally it should be spot on.
It uses HGH20/HGW20 sliders - more ridged and smoother operation. longer lasting and less flex.
There are less parts to make - down to 5.
Itâs simpler
I removed the confusing upgrade opps later for X axis
You should get 140cm of travel
Tram though front mounted screws and eccentric nuts
Now there are a few things worth noting;
Itâs slightly bigger and thicker than my original design - this will generally improve itâs smoothness over the X
The plans will require you to add holes for your HGG20 rails - I donât have a set to hand to work from - I can walk you though this
There is some two sided milling
You will need to tap some threads
Because I havenât physically made the design yet, you might find some of the holes slightly too small after milling - Iâve assumed M5, but some might need to be made into M6.
I havenât added any tool paths - I have a 2.2kw spindle and the speeds I put in were not suitable for many.
Thanks Luke, very interested, keep drinking the coffeeâŚmaybe a âLukeokoââŚor a âBeavermaticââŚ
I always buy the expresso grind for my drip coffee maker, it comes out much stronger, but Iâd guess you have a handle on thatâŚhow about a âSconeCNCâ to celebrate your âBritâ initiative, okay enough âmusingâ, good job.
âBeaveroid CNCâ Jude
checked out your youtube channel Luke, subscribed too.
When the tales of this time come to be written down* in the annals of history, the day I innocently suggested to @Luke that he take another look at the âJointâ function in Fusion 360, thatâll be the day the monster was created.
* Or scribed into holo-crystals **
** or finger-painted onto the walls of caves
I donât believe that those cave paintings were authentic art work for generations to come⌠just like we hang our kidâs paintings on the refrigerator the cave momâs let their kids paint on the cave walls, hence the âbigfootâ cave drawings were really the little oneâs best effort at drawing mom and dad. What else did they have to keep them occupied? Some might have been really good but it was still just the kidâs artwork. Donât get me started on âdinosaursâ musingsâŚbut save your sketches Luke, next few generations might see somethingâŚLeonardo didâŚ
When I follow your lead, I probably will keep my makita router (no new spindle budget), this would hang out in front of the assembly farther than your 2.2 spindle (I think)? Trying to consider the leverage force on the âvâ wheels", but I like your thinking about a second plate in back for 4 more âvâ wheels ( 4 front and 4 back sides). It seems your assembly is solid and steady vertically (tram wise) even with the extra weight of the big spindle ? (seems pcsavant had play tram wise in his kit version)âŚ
So a lighter router should poise no problems of stability tram wise. On your utube you mention adjusting the tram with shims and screws⌠at some point in the future, please note a discussion of this ability. Thanks Luke
Just remember @TommyG - you pushed me over the edge
@Jude, are you saying additional 2 wheels on the rear? If so they could likely be accommodated. Bear in mind my spindle weighs twice a dewalt Iâm nut sure itâs needed, but it would make things smoother I guess.
I have been giving tram some thought, the easiest way to add this is to mount it from the front.
Griff
(Well crap, my hypometric precursor device is blownâŚ)
9
Food for thought⌠I combined the original S3 Z axis, Lukeâs design and Tommyâs design, exploded them for visual reference. It is in sketchup but they are as downloaded from your fusion and all appears intact. So here is a visual reference of the 2 Z Axis Screw Drive Assemblies:
Griff
(Well crap, my hypometric precursor device is blownâŚ)
13
I see the second part of the motor mount in the assembled model but not as a separate part/model. In fact, in the browser it shows as an out of date component.
Also, the larger piece of the motor mount is 50 mm thick. Iâm not sure I can mill something that thick with accuracy. Not to mention the thickest stock I have on hand is ~26mm. Iâd guess making two pieces at 25mm each would be ok?
You only need to make the smaller bit - the 50mm bit is one you buy in - link is above in the first post.
You could also use 50mm spacers.
Griff
(Well crap, my hypometric precursor device is blownâŚ)
16
Hmmmm, something funky here. I upload the file you sent above into new folder, watch as the files upload, see one named motor mount with spinning arrow that just disappears eventually. Possibly because there are two files named motor mount?
Sorry to be a pain in the arse!
) From there I decided to learn how to use fusion a bit better. To cut a long story short, I have made a revised design of the linear Z axis for the shapeoko and remove the confusion behind all the designs floating in the original topic.
