Feedrate limits of the Maslow (theoretical)

Had a search of posts and I think this is mostly right, but wanted to understand if I pieced it together right:

In terms of the maximum theoretical feedrate (ignoring the actual cutting), the max feedrate is about 2500mm/m?

And the limit in the hardware is not being able to retract / extend the belts faster than that?

And diagonal travel is the place we see the limit forst because that’s opposite corners feeding / retracting straight on?

And this is supposition: 2500mm/m is based on the diameter of the reel with the belt fully out and the max voltage the motor should be driven (or is it more about the gearbox)?

2 Likes

Oh, and there’s acceleration limiting too so you might not see those speeds except in long straight moves?

1 Like

Yup! That is spot on.

Again, spot on. A few versions back we re-wrote the kinematics software to better account for this so in theory now we can allow faster moves in directions that it’s physically possible, but I haven’t worked on testing that yet.

Exactly.

1 Like

That all makes sense! Correct me if I’m wrong but the motors we use seem to be (more or less) these:

Specifically the 24V, 60RPM versions (I think?)?

Grabbing a chunk of the spec table:

I figure the 60RPM was a sweet spot in terms of various tradeoffs, but as I like pushing the hardware in various ways, I was pondering what might happen if we used the next one up or down in terms of gearing.

Like, if I limit myself to 1/8 bits doing 1/8th cuts, would picking the the next gearing up (85RPM) make sense - it’s less torque but faster, and I think there’s headroom as long as you had free spinning / well lubricated reels.

And similarly, if I’m trying to do a full sized spindle, maybe the 43RPM gearbox might make sense, though I’m suspect belt stretch would mess things up :thinking:

1 Like

Especially if you limit yourself to horizontal mode I think that 85 RPM is totally an option

1 Like