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Ortin

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Thursday, July 12th 2007, 5:08pm

Home-made laser cutting machine

Hello to everyone.

Here I want to ask: is it reasonable to count a home-made laser-cutting machine as a basic equipment? =) If yes, then I could tell about it more. If this is not interesting, then I would't waste my and your time just to see my threed deleted...

  • "hemingway" is male

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Thursday, July 12th 2007, 5:20pm

Hi Ortin,

this is a subject, wich many people want to read more about!

Please tell us, how you manage this!

(I have tried to use my laserpointer, but it doesn't work... :()

Cheers
Bernhard

flimounet

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Thursday, July 12th 2007, 5:21pm

All depends on the price :D. If the construction is cheap, I would do it. (Not only for modeling but also for my business :D.) So, go on with your thread.
Regards
Andreas

Ortin

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Thursday, July 12th 2007, 5:39pm

Quoted

Originally posted by hemingway
Hi Ortin,

this is a subject, wich many people want to read more about!

Please tell us, how you manage this!

(I have tried to use my laserpointer, but it doesn't work... :()

Ok, there is an interest, so I will proceed.
First of all, your laser pointer is not suitable. What you need, is an industrial CO2 laser. Don't worry, for paper only 10W will be enough.

Quoted

Originally posted by flimounet
All depends on the price . If the construction is cheap, I would do it. (Not only for modeling but also for my business .) So, go on with your thread.

I found all major components on e-Bay. And the price - it all depend on a luck. :)

This post has been edited 1 times, last edit by "Ortin" (Jul 12th 2007, 5:40pm)


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5

Thursday, July 12th 2007, 6:09pm

Ortin,

this is a very interesting subject. Please tell us everything you want to share with us.

Michael

Ortin

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Thursday, July 12th 2007, 6:22pm

Quoted

Originally posted by Michael Urban
Ortin,

this is a very interesting subject. Please tell us everything you want to share with us.

Michael


Actually, there are following major components:
- CO2 Laser with focusing optics and power supply
- XY motion table, it could be with stepper motors (belt or screw), linear motors or other.
- Amplifiers for XY motors with power supply
- Frame of machine
- Computer with appropriate software
- Lot of free time to assemble all together. :)

About XY motion system you can read on related CNC foruns, for example, here: http://www.cnczone.com/forums/index.php?

I will post here some pictures later and write about all used components.

René Pinos

3,1415926535....

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Thursday, July 12th 2007, 8:07pm

Hi Otin,

please go on showing us details and some kind of part list will be nice ?

Indeed this is a very intresting subject.

Tanks so far.

René
Wer Bier nicht liebt und Weib und Knödel der bleibt ein Leben lang ein Blödel

Ortin

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Thursday, July 12th 2007, 8:28pm

Here are couple of pictures:
img_6897.jpg - 1.37MB
img_6898.jpg - 1.37MB

And here are couple of videos. Track linsks for Pz.Kpfw.3/4 are being created from paper. :D
mvi_6969.avi - 19.42MB
mvi_6970.avi - 18.42MB
You have to download videos first...

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Thursday, July 12th 2007, 9:56pm

you constructed this by yourself? if yes, WOW!!!
how much does it cost?


Ist Rechtschreibschwäche und grenzenlose Blödheit abmahnfähig?

Ortin

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Thursday, July 12th 2007, 11:52pm

Quoted

Originally posted by Peter P.
you constructed this by yourself? if yes, WOW!!!
how much does it cost?

Not actually by myself, my father helped me. Other words, we built it together.
As to the price - it depends what you have in a garage and what can buy on e-Bay. To buy just materials and components, it costed me around 1700USD. XY-table with amplifiers cost 680$ on eBay. Aluminum for frame 160$ in a local store. Laser ~700$ on eBay. The rest was spent on different minor parts, such as cable chains, exhaust fan with pipe, transformers, tools, etc. Some parts were found on a junkjard, such as acrylic for "sealed" case, metal corner profiles, circuit breakers, large metal box for all electric components. Some as focusing lens were waiting for a long time in my table before finally got used.

flimounet

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Friday, July 13th 2007, 8:03am

Hi Ortin
That sounds very interesting. Please go on woth your explications ;).
Regards
Andreas

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Friday, July 13th 2007, 9:08am

Hello,
this sounds very interesting.
Which system do You use on Your computer?
In my study at the university i had a project with a real-time
machine controlling system based on real-time linux (RTAI).
There is also a free CNC controlling software available under
http://www.linuxcnc.org/
This must be adapted to the system, but perhaps it helps.
Is the CO2 laser a sealed-off type?
Do You move the complete laser-system or do You just
move optical components?

In my study i there was a lot about machine-construction
and controlling-systems of tool-machines, so this is very
interesting for me, even if i am not sure if i find the time
and the place to build one by myself.

Do You think an old plotter is suitable as an XY-table
for the laser?

Please keep on with this subject.
Thank You.

Markus Schweizer

Ortin

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Friday, July 13th 2007, 4:14pm

Quoted

Originally posted by Masw
Hello, this sounds very interesting.
Which system do You use on Your computer?

Hi! As a machine control software I use a Mach2/Mach3. It runs under Windows. It has a free demo capable to run a 1000-lines of G-code program. Of cource, computer is dedicated only for this task. :D
Forget to say that computer is connected to the motor amplifiers and home/limit sensors through the parallel port (LPT). So there is no need in any additional communication cards.

Quoted

Originally posted by Masw
Is the CO2 laser a sealed-off type?
Do You move the complete laser-system or do You just
move optical components?

Laser is completely sealed, RF-exited. It is a small 10W Synrad CO2 laser.
I move XY-table, laser and focusing optics stays in a place while running program. But they are attached to the manual Z axis, so I can move it higher-lower for different materials and fixtures.

Quoted

Originally posted by Masw
Do You think an old plotter is suitable as an XY-table
for the laser?

Why not? It all depends on design of a plotter. But you rather should make a "Flying optics" systems, meaning your laser and material stays in place, and moving couple of mirrors and a lens.

This post has been edited 3 times, last edit by "Ortin" (Jul 13th 2007, 4:30pm)


Oliver Weiß

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Friday, July 13th 2007, 5:02pm

Awesome! Are these U.S. Dollars, or Canadian, Australian ... ?

Cheers,

Oliver
  • FERTIG & JETZT ZU HABEN: Schaufelradschlepper "Anglia", 1866
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Ortin

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Friday, July 13th 2007, 5:08pm

Quoted

Originally posted by Oliver Weiß
Awesome! Are these U.S. Dollars, or Canadian, Australian ... ?

They are U.S. dollars (USD). I mentioned it above, but very quick.

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Friday, July 13th 2007, 6:07pm

is there anybody in this forum who can build such a magnificent machine for this price?
wir hatten doch schon mal über lasercutter gesprochen,und die waren etwas zu teuer...
aber wenn wir hier auch so einen mcgyver hätten wär das nicht schlecht... ;)


Ist Rechtschreibschwäche und grenzenlose Blödheit abmahnfähig?

Oliver Weiß

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Friday, July 13th 2007, 7:49pm

Da wird sich schon jemand finden - Ihr werdet Euch doch von uns Amis nichts vormachen lassen ;)


Gruß,


Oliver
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Friday, July 13th 2007, 9:12pm

hoffe ich doch!
das zeigt nur wieder dass man sich vieles selberbauen kann und nicht für teures geld kaufen muss,einfach genial der bursche!


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flimounet

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Friday, July 13th 2007, 9:45pm

Hmm, Idon't believe that I'm able to do it :rotwerd:..... but I know where I can find a guy who can do it (if I can give him an explication how to do) ;).
Ortin, come on with all your data basis. Doesn't matter which language you will use. PLEASE

Ortin

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Friday, July 13th 2007, 11:17pm

Quoted

Originally posted by flimounet
Hmm, Idon't believe that I'm able to do it :rotwerd:..... but I know where I can find a guy who can do it (if I can give him an explication how to do) ;).
Ortin, come on with all your data basis. Doesn't matter which language you will use. PLEASE

I will not share any tech. drawing just because I haven't any of them. You never know what hardware you will buy/find to use in a machine... But I can tell you guys from what parts this particular machine consist of. And answer any questions. Just do not ask too general like "could I do the same?".
Ok. Here a brief explanation of build process:
1. X-axis and Y-axis together with controllers (motor amplifiers) where bought on e-Bay. They are what is called "linear stages". It means that a base plate, 2 rails, linear motor, encoder and moving plate are already assembled together at a factory. Just do not ask me in what equipment they were working originally - no one knows. :D It was a big luck to buy them and find that they are actually working. This saves me a lot of time/materias/nervous if I decided to build them from separate parts.
2. To make XY table all I need was to put shorter stage over the lager and bolt it. On the very top I bolted an aluminum plate - "working table". Of cource there was a work to attach cable chains, home/limit switches, etc.
3. Then make a simple ftrame - base plate, two side plates and a "bridge" plate. To that "bridge" plate I attached laser on a manual Z travel axis (similar to what is using with small drill machines). Is has a lock handle to make shure that it will not fall down during work, so I can fix it in any Z position.
4. Make a surrounding case ("aquarium") to catch a smoke and suck it by fan away. Also made a loading door in it.
5. Installed all motor controllers, power transformers, power supplys, circuit breakers, emegrency stop switch and other electrical staff into appropriate metal box (founded on a junk yard), put there all cables and connect them properly.
6. Made a cable to connect computer's parallel port (LPT) with electronics box.
7. Install on a computer a CNC software, Mach2/Mach3.

And now everything is ready for work. Of cource, if you can create right CNC program. ;)

This post has been edited 3 times, last edit by "Ortin" (Jul 16th 2007, 3:29pm)


CapHowdy

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Tuesday, December 18th 2007, 2:44pm

Bin gerade beim Durchstöbern des Forums über dieses Thema gestolpert, hört sich sehr interessant an.
Mal eine ganz blöde Idee: Hatt einer schonmal die Präzession von den Lego mindstorm motoren getestet. Bei dem System kann mann ja die Steuereinheit neben dem Kinderprogramm auch mit c++ oder Labview füttern, damit könnte man dann die xy-Verfahreinheit relativ billig bauen und programmieren, allerdings bezweifle ich dass die motoren dass hergeben(sind glaub ich keine Schrittmotoren)

Mfg

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