# Tutorial on feeds and speeds

Finished up adding all the official feeds and speeds to the table (made using booktabs and the LaTeX picture environment for those who’re curious). Next up will be doing something a bit more useful w/ it.

CNCtable.pdf (48.6 KB)

(Jude Marleau) #37

I appreciate your unending efforts… this appears to be an enormous task you have endeavored to see to a success, wish you all the luck and good fortune, unfortunately that is all I can offer. Thank you Jude

Thanks!

Working on it a bit more, thought this reference was nice and straight-forward, and generally useful in terms of ordering things as:

material > endmill diameter > chipload > calculated feeds and speeds

Just checking and making corrections on the calculated chipload / tooth on the wiki.

Okay, next iteration. Using Google Forms to collect everything into a Google Docs Spreadsheet:

Does this seem like a useful representation?

(Phil Thien) #41

That is a lot of colors with subtle differences.

Any way to add any numbers or different shapes to make it a little easier to follow?

(Julien Heyman) #42

I think this is awesome, and would indeed be awesomer if inserting numbers inside the circles and squares was doable

Thanks! What numbers would you wish to see? You can get the values for a given point by mousing over it.

@cgallery — I’ll have to see. One can drill down to a specific datapoint by clicking on the sets you’re interested in — clicking on the material you want, is pretty effective. When we add more values I believe it will continue to be pretty effective.

(Julien Heyman) #44

Silly me, I did not realize you could click on an element in the list, and it gets highlighted. So I take back my comment, this is already awesomest

Thanks!

I guess the big questions are which aspects it makes sense to use for controls:

• materials — definitely
• endmill — not sure why I didn’t use that, but arguably:
• diameter
• no. of flutes make more sense
• machine I’m not sold on, but seems an obvious thing

I’d like to have some way to select a spindle speed range — that way folks w/ a given tool could choose to see only relevant entries.

(Phil Thien) #46

Cancel my comment, I didn’t realize I could click on a material and the chart would highlight my selection.

Very neat! Thanks for doing all this work!

My pleasure!

Feedback on which elements to provide to be clickable would be welcome, and their hierarchy / ordering.

Converting the balance of this post into a new topic — please see:

Interfaces and data and so forth
(Julien Heyman) #48

The order most useful to me would be:

1. machine (clears out the field and one less reminder about the opportunity to spend money on a beautiful Nomad
2. material (input constraint on 99% of my projects)
3. endmill size & #flutes (input constraint when you have a limited set and/or the features to carve demand specific sizes)
4. min/max RPM (I personnally really dislike going to the higher RPMs range (noise!), and prefer to stick to e.g. 12.000 and adjust feedrate accordingly, when this is possible/compatible with SO max feedrate)

Come to the Nomad side, we have fixtures.

(and peace and quiet, and an enclosure, and a tool length sensor, and ER-collets, and can use an edge finder…)

(Evan Day) #50

You can’t use an edge finder on a SO3?

Not a mechanical one with a trim router — you can use it if you have a spindle or VFD which spins at low enough speeds — that said, I think my Nomad is jealous of the probe on my SO3 XL.

Okay, I’ve added some more values, and adjusted things a bit further — getting a bit cluttered, but hopefully useable still.

(Julien Heyman) #53

Cool. Is it possible to make diameter a filter (like machine & material), instead of a legend/key ?