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Author Topic: Wood CNC - Status thread  (Read 1836 times)

Chorca

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Wood CNC - Status thread
« on: May 06, 2015, 10:16:01 AM »
Wood CNC - DOWN

Status: The Wood CNC is currently in a torn-down state, awaiting being moved to the new space. All parts are in the black plastic bin near it; if any more parts are found around the lab during cleanup please place them there.
After move, Chorca will begin rebuild of the electrical systems so it runs gud.

Update: The CNC has been given small feet! This will allow it to be leveled properly after it is placed into position. Since we have CoO we can now begin to install everything, sort stuff out and place things where they belong. As soon as this is done, we will begin work on getting it fixed up. Mike Payne, AtomicProf, and a few others have asked about how they can help; I will have a plan together by this weekend so we can begin work! All components are in and everything just needs to be wired up.
« Last Edit: July 08, 2015, 01:29:30 PM by Chorca »

Chorca

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Re: Wood CNC - Status thread
« Reply #1 on: May 06, 2015, 10:22:27 AM »
Firing this up cause the forums aren't used much and in keeping information together I wanted to keep an updated status of various tools going.

So, last night I came to hang out with Pocky WHO WASNT THERE :( so I decided to work on the wood CNC cause she ma babby.

I cleaned the dust collector hose and inlet out, cleaned the filter off, then vacuumed and swept up the whole wood cutting area over there. IT IS/WAS A MESS.

Now that it's somewhat clean, I grabbed some of the switches I got forevers ago and mounted them on some pieces of wood I found, to the sides of the t-slot using some 10-32 bolts/nuts cause I couldn't find any t-slot nuts. I'll procure a bunch more of those nuts for the machine.
I aligned the switches so they home at the same location on both sides, and tightened everything down.

I took a look at the system and the issue will be with programming LinuxCNC to handle homing both sides of the gantry simultaneously; there's a thing called Gantrykins that kinda does it but from what I've been reading it's no bueno, and the whole system is honestly kinda janky to start with.

I'm looking at changing things over to something using a Smoothieboard or similar to drive the steppers so we aren't locked into whatever machine happens to have a certain chipset that has a low latency on the parallel port, and that should help us as well since I can tie the enable lines of the servo drivers into it and have it properly shut down. Just need to look into support for homing the separate drivers for the gantry, alternatively it could be converted to a single belt/motor that drives both sides of the axis.

I will investigate more on this and return.

darkmoonsinger

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Re: Wood CNC - Status thread
« Reply #2 on: May 06, 2015, 10:44:37 AM »
Thanks for working on this! :)

AtomicProf

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Re: Wood CNC - Status thread
« Reply #3 on: May 07, 2015, 11:29:26 AM »
For the Move -- I put the paper shims under the legs where it sits now.  I wrote in the log how I did this.  But a quick recap here.  I used the laser level provided by PAT..   I put it on the floor and made measurements on the legs of the CNC.  This was used to tell me how "UNFLAT" the floor was. I put the laser on the bed and saw that the unfitness was transmitted through the legs to the bed, as shown by crooked lined on the side walls of the CNC machine..  Then I did a few more floor measurements and calculations..  Inserted the required shims.. and then when I put the laser level on the bed..  The lines will all parallel and perpendicular as they should be.. 


So -- prior to machining the top flat (If needed) we should do this in the new location, as it worked wonders before.
There is Quality in the Details
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Chorca

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Re: Wood CNC - Status thread
« Reply #4 on: May 07, 2015, 04:35:41 PM »
Perhaps we can jack the machine up and install some adjustable feet on the bottom of the legs.. this would make leveling a lot easier and accurate..

I can find some and pick them up if this isn't a terrible idea.. The steel plates are thick enough that we can prolly just drill/tap.

EDIT: Too late, just bought some.

3/8-16 thread, 3,750lb capacity

They'll be here saturday
« Last Edit: May 07, 2015, 04:57:04 PM by Chorca »

Chorca

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Re: Wood CNC - Status thread
« Reply #5 on: May 07, 2015, 04:59:24 PM »
Also, the machine doesn't have to be level, just flat.. so as long as the bed is pretty flat in relation to the cutting head, that's all that really matters.

I think Mike mentioned that the center was sagging. If we can shim up the center of the bed and resolve that issue, I think that's prolly good enough.

AtomicProf

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Re: Wood CNC - Status thread
« Reply #6 on: May 08, 2015, 09:19:57 AM »
Level -- wasn't the issue..  the machine isn't stiff enough to remain "flat" if the floor isn't "flat".  That's why I had to shim the feet. 
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Chorca

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Re: Wood CNC - Status thread
« Reply #7 on: May 09, 2015, 01:42:17 PM »
That makes sense. The feet are coming in today, so I'll bring 'em to the lab and see about getting them installed this coming week.

Chorca

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Re: Wood CNC - Status thread
« Reply #8 on: May 22, 2015, 02:43:49 PM »
Just an update, feet are in. I got a bunch of new buttons and stuff to wire up, including a Smoothieboard 3x, which is fine since we'll be using the stepper outputs anyway instead of the drivers. I'm drawing up a wiring diagram to include E-stops and such, so we should have a better idea of how things are connected.

johnbentcope

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Re: Wood CNC - Status thread
« Reply #9 on: May 22, 2015, 02:55:56 PM »
Thank you for making that tool awesome
I like colors.

Chorca

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Re: Wood CNC - Status thread
« Reply #10 on: May 22, 2015, 03:15:50 PM »
JOHN LETS MAKE ALL THE FURNITURE FOR THE NEW LAB ON IT

https://www.opendesk.cc/designs

http://atfab.co/cnc-furniture/
« Last Edit: May 22, 2015, 03:31:36 PM by Chorca »

Chorca

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Re: Wood CNC - Status thread
« Reply #11 on: May 22, 2015, 03:53:48 PM »
I just said F-it and ordered a KentCNC dust shoe so we have something nice. Its $160 but whatevs.

I will most likely order a SuperPID as well to control the router's speed accurately so that we can dial in accurate RPMs when cutting stuff.

Chorca

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Re: Wood CNC - Status thread
« Reply #12 on: May 22, 2015, 04:30:39 PM »
Ordered the SuperPID as well, we'll need to rebuild the router's control interface. I need a box to mount buttons/knobs and the SuperPID controller into.

AtomicProf

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Re: Wood CNC - Status thread
« Reply #13 on: May 24, 2015, 12:58:00 AM »
Most Excellent !!



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Simply7

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Re: Wood CNC - Status thread
« Reply #14 on: May 24, 2015, 08:45:26 AM »
Chris, if we rebuilt the structure for the y axis (which is cracked) could we get a little more Z range or are we maxed out on z currently?