Gallery, Projects and General > Project Logs
Mill Power feed
Bernd:
Nice work Darren.
I'll bet you that MDF stays permanent. :lol: :lol:
Bernd
websterz:
--- Quote from: Darren on April 22, 2009, 07:07:08 PM ---Websterz,
I'm not sure I'd want to power a mill bed with a 170 DC motor, if something went wrong it's prob got enough power to do some real permanent damage.
Be better to have a motor with less power and have it stall or even burn out.
But, it would make a nice variable main motor, umm, now that would be nice.....send it to me, I'll make a power supply for it !!!
The drill motor is too fast, you won't be able to slow it down enough without it stalling unless you use gearing. Even the wiper motor is only just managing the real slow speeds. I have a feeling it would be better to gear it even though it is already geared. That way the motor speed can be doubled making it smoother running etc.
I'll see how it goes first though, others report they work fine and maybe I'm running it too slow anyway.
PS, you could build a power supply for that motor... :thumbup:
--- End quote ---
I tested the drill before disassembling it and my tach said I could sustain a low end of 20 RPM. With the finer feed control offered by the new controller I suspect that it will go at least that slow. If not I have a lovely selection of gears available. I can do as much as a 1:20 reduction just with what I have on hand.
hmmm...main drive motor eh... :proj:
Divided he ad:
Nice work Darren :thumbup: I've been a little busy thinking on this stuff myself tonight..... Came up with a slightly different approach, not even close to finished yet!
I have found some of these on the circuit boards though.... 4 to be exact.
Can you see them.... Black squares with the top right corner missing.... 4 legs and the little pictures on them like the flat square one you showed..... Stew, David.... we're sorted guys :thumbup:
This is where I'm upto in my "on the fly" design.... Just a few sketches on paper at the mo for the engage/disengage bit that Darren has sorted..... My motors are slightly different and mounting out of the back of the gear would be a bit harder (no spigot from the rear of the gears!)
Now this was marked out in true heath robinson stylee and I'm not apologising for it, it's functional and it works, it's just the way I do it ::)
Clamp the mill bearing onto the plate, draw around it to show if it moves and drill the holes through the existing ones, once marked remove the bearing plate and re-fit to the mill, clamp up the marked plate and continue to drill and bore all the holes you need into the plate.... fitted like a glove!
New bolts to be purchased and a few bits to be cut away from the aluminium mounting plate (the bit with the squiggle on it) for the hand wheel to re-fit
That's it for now..... A (very) C-o-C of the intended design..... Sorry, it's late an I just scrawled it for you to see .
When the lever (far right) is moved to the right it will disengage the spline drive from the motor spline and pull the belt (might use a chain yet?) to the right by only 10mm or there about, not putting too much strain on the belt as it will be free wheeling on it's bearings when the hand wheel is rotated.
Right, I suppose I'd best get some sleep now ehh!!
Ralph.
Brass_Machine:
I don't pay attention to a thread for 1 day and it explodes! Looking good there Darren. I am impressed.
Eric
bogstandard:
Some very inovative cat skinning going on here. That is what it is all about, different methods ending up doing the same thing.
Well done to all.
Darren, I think your only problem is your flycutter shape and sharpening. The feed and speed you were going at should have had that ali plate like a sheet of polished chrome.
So a major good result for the feed, but could improve a bit on tool grinding. 9.5 out of 10.
Bogs
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