about my 48" X 48" X 5" Techno/ISEL woodworking router build

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31 Mar 2021 08:30 #204185 by travis036
Been a while since an update...
i have been waiting for parts to arrive. i bought some DC circuit-breakers for my power supply cabinet, so no more directly powered circuits. i also ordered some wire to go between the power cabinet to my control cabinet. i thought the wire was somewhat local stock, but it turned out to be coming from China. it just arrived yesterday.

i removed the HAL connections from the coolant control (powers my dust collection vacuum), and instead i am using the pins from the spindle CW and CCW signals to turn on the vacuum, so it will start as soon as the spindle starts up. more of a convenience factor, really.

i have started to bundle the cables on the machine, just to make it look a little better. still looks like a bundle of spaghetti hanging off the machine, though.

even though i will have breakers in the power cabinet for each power buss, i may pickup some fuse blocks for each buss (5v, 12v, 24v, 36v). for example, the 24v buss has a 20A breaker, as that is what the PSU will supply. but i don't want the risk of a 20A short on, for instance, the light gauge wire for the homing switches. at the moment, i don't dare leave the machine powered, until i fuse the circuits. perhaps just paranoia...

~Travis

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02 Apr 2021 09:15 #204469 by Mike_Eitel
If you have a normal 20A PSU a 20A breaker will probably not trip. Depending from time and current your beaker has "tripping-curve". Normal PSU go fast into current limits and do not supply enough amps. For what you want you need good industrial grade PSU ore better electronic fuses.
But your solution looks probably cool ;-)

Mike

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04 Apr 2021 10:21 #204727 by travis036
Hmm, had not considered that the PSU would have current limiting... well, i guess i have some fancy looking cut-off switches, ;)

hopefully the smaller per-circuit fuses will keep things in order, when i buy them. bills took financial priority, so it may be just a bit before i can order them. (hate when bills get in the way ;) )

~Travis

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05 Jun 2021 21:18 #211248 by travis036
New configs at: github.com/travis-farmer/linuxcnc
with changes displayed at: github.com/travis-farmer/linuxcnc/commit...c366f06e50812100e64c
(for better clarity)

so, what i wanted was for the dust vacuum to come on ONLY if i am not using the coolant signals, but when the spindle comes on. what i came up with works, providing the coolant signals come on throughout the time the spindle is on, though that depends on the CAM post-processor config. i tried a few test G-Code files, and it seems to work quite well.

my intention here is that my woodworking CNC router is capable of milling plastics and soft metals. it is my plan to construct some sort of coolant containment system so that when i mill plastics and soft metals, the coolant doesn't make a complete mess. and when i want to mill wood, i can either remove the containment system (likely a PITA), or clean and dry the containment system after each use of coolant, and allow the containment system to aid in the containment of wood dust, while the vacuum picks up most of it.

now, i would obviously need to make provisions to plug the coolant sump from wood dust, and be able to physically turn off the coolant to prevent drips on the wood when not in use. i could also blow them clear with compressed air... perhaps.

so, what are all your thoughts here? i can't afford two machines, so i want to make it as versatile as i can.

~Travis

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13 Jun 2021 10:41 #211928 by travis036
strongly thinking of a minor change in direction here... due to cost, and available funds.
yes, the spindle works great, but as i planned on using a laser for about 80% of the machine work, i am thinking of pulling the spindle off, and out of the way, and mount the laser in it's place. i need to be able to make money with this machine, ASAP. with the spindle, it still needs work, in that i have to figure out how to mount a dust shoe, with no room to mount it...
with the laser, i think i have everything ready so i can just mount it (to be determined how), make the wiring connections, and test it.

i could use two different configs, one for laser, one for spindle, but i don't want to have to maintain settings between two configs, and with the spindle mounted, i have no room to mount the laser. i am not getting rid of the spindle completely, just for now, so i can have a production ready machine.

the purpose of the laser is to simply cut or just burn a design into wood, like a sign, or a pattern on a cabinet door, or even just a branding logo on the back of a built cabinet door. i could even establish a database of each cabinet door, and burn a serial number that correlates with the database, so if the door breaks, warps, splits, or whatever, it can be remade by simply referencing the serial number on the back, though that is all pointless if the customer paints the door back...

it is my hope in the future that i can just make some changeable mounts for the spindle and laser head, so i can change out each, but that is after i make more money with the machine ;)

~Travis

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14 Jun 2021 23:15 #212069 by andypugh
Is there scope for spindle on one side of the gantry and laser on the other?

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