PDA

View Full Version : I'm trying to build my own cnc so... i need a little help...



zet-jaro
09-06-2005, 06:00 PM
ok, sturmer and me want to build a cnc machine so we need you to ask you some questions... that cnc has to have working dimensions of A4 paper...


so...
1. can this be helpfull? keys are just that you can better see size... we have 2 of those...

http://i15.photobucket.com/albums/a396/zet-jaro/IMG_0788.jpg

2. what about this? also have 2 of those but only last few letters are diferent (on this motor they are TB9X31F) - 5 wires

http://i15.photobucket.com/albums/a396/zet-jaro/P1010007.jpg

3. can this be modified? also 2 of those... originally for 3 motors

http://i15.photobucket.com/albums/a396/zet-jaro/P1010003.jpg

4. can this be of any help? also 5 wires and also 2 of those

http://i15.photobucket.com/albums/a396/zet-jaro/P1010008.jpg

anyway, those parts are from hp 610 and hp 650 both desk jet....

tnx for any help....

Sturmer & zet-jaro

zoltan
09-06-2005, 06:36 PM
Hi,

I started like you. I collected old/broken printers from everywhere. The motors as I can see in the pic are too small and they are 7.5 degrees step, not great for resolution. You must look for printers like HP Laserjet series I/II/III or any OLD and big printer. There you find motors of 0.65-1 Nm.

Regarding the board I can not comment. It is SMT which means...difficult to salvage parts. Again, look for old printers....Usually, they have SLA series IC, which myself I did use yet, despite the fact I have a bunch of, but in some printers I found out also L297/L298. For driver and interface go to Phil's site and chose.. I started with discrete unipolar. It was useful just for learning. It has poor performance comparing with L297/L298 or A3977 you can find there, but it is cheap and easy to build, and it moves the machine. You can work with it.

Zoltan

zet-jaro
09-06-2005, 07:00 PM
Man, tnx for your help!

Does all 3 printers have to be the same?
We are from Croatia so is there any store on this area for electronics? i got some kind of reductor which goes between that thing on first pic and step-motor on fourth pic...

Jason Marsha
09-06-2005, 09:30 PM
Try photo-copier repair shops or photo-copier agents. They usually dump the old photo-copiers without salvaging any parts. With some luck you can get decent steppers, much larger than the ones pictured as well as 608 series (skate) bearings and stainless steel slides.

Jason

Jason Marsha
09-06-2005, 09:33 PM
I forgot to add, avoid 5 phase steppers .

Jason

zet-jaro
09-07-2005, 03:52 AM
tnx man!

what abot electronic? any shops near Croatia?

lucas
09-07-2005, 06:02 AM
Aren't there any electronics shops over there or do you want complete driver boards?

The PM55 motor should be able to move something if chopper driven and directly coupled to 8 or 10mm threaded rod.
10mm has 1.5mm move per turn, at 48 steps: 0.03125 mm/step.
That "something" can't be much, it won't work for a router. Might be just enough for the Z to lift the spindle if it's a light one

Most important: what kind of machine is it: what spindle and materials?

A4 size is small, you could use the carriage guides from the printers and use these for the Y and/or Z. Have a look at the drawer slide thread, I posted some pictures for this.

zet-jaro
09-07-2005, 09:47 AM
we would like to buy electronic kit wich includes board for handling steppers with all elements...

i have some kind of table-drill for a start...

lucas
09-07-2005, 10:43 AM
Looks like you misunderstood the important question.

What do you want to do with the machine?
Only drilling, milling wood or aluminium?

This will define the kind of spindle and stepper power you need.

Once this is known then you can go ahead and select motors, electronics etc..

zet-jaro
09-07-2005, 11:15 AM
well... milling wood and aluminium if possible....

lucas
09-07-2005, 12:32 PM
In that case you won't be able to use any of the parts you have, not strong enough.
I'd suggest you have a good look at several machines discussed in the wood and metalworking area to get an idea.

Sturmer
09-07-2005, 04:33 PM
zet jaro is a little bit wrong...the wood he was talking was balsa....this was primerly my little project for cutting parts of airplane models...but...The photocopier machine idea is great! there are big stepers...and pretty big slides...hm...the steppers and the construction is the simple part of the build...we need some kind of driver board...so we culd cut balsa...or grave on wood....and when this thing works fine...then we will try some thing to cut aluminium.....

zet-jaro
09-07-2005, 05:33 PM
kaj nije isti kurac radit na aluminiju i drvetu? samo za aluminij smanjih brzinu kretanja svega toga i povecas brzinu glodala.... a ostalo sve isto?

Sturmer
09-08-2005, 06:01 AM
panjino blentava a sile naprezanja pri vucenju glodala po materjalu??kak moze bit isto?? :withstupi
I saw an few designs for controling the step motors...

I have copy pasted teh spec from our local shop...
is that it?And how should then make programs...(i know a little bit of Gcode but A-cad is prpreferable).I know there is an gcode converter from dxf gcode..but don't we need some special controler for transformation into tsteps


KIT STEPPER MOTOR CARD VEVELLEMAN8005


-For bi- and unipolar motors (maximum 1A).
-High precision possible (up to 0.9°, or even more when using a motor
with reduction). While the motor turns you can simultaneously check
the status of switches using K8000, or drive another motor. You can
always give an emergency stop signal. Test program included. Manual
test buttons to test the card without K8000 interface. Can be used in
every application where positioning is needed (for example a plotter,
a printer, a valve, …). High precision motor included (12V).


*Specifications

* I^(2)C controlled via K8000
* communication address of the card (from 0 to 15)
selectable via DIP-switches on the PCB (remark : connect up to
4 x K8005 cards with one K8000 card)
* adjustable drive speed
* programmable in Turbo Pascal for DOS, Quick Basic and Visual
Basic (Win95/98/ME)
* emergency stop can be sent to one or all cards
* power supply: 7 to 25VDVDCr AC / 1.5A (maximum current depends
of the motor type)
* dimensions: 100 x 90mm (3.9" x 3.5")
* recommended housing: G386 :confused:

zet-jaro
09-08-2005, 07:53 AM
brijem da smo uvijek tak radili na praksi, kad je malo jaci materijal onda smo uvijek uzeli glodalo za taj materijal, smanjili brzinu pomaka glodala a povecali njegovu brzinu vrtnje... to je tak uvijek islo... e sad je samo pitanje dal se moze tolko smanjit... e da, jos smo smanjili dubinu prodiranja u materijal u jednom krugu...znaci glodalo bi ulazilo po pol mm ili 1mm u materijal i napravilo 10-15 puta tako dok nebi izglodalo do kraja...

sorry for the language, it is some internal conversation....

zoltan
09-08-2005, 10:58 AM
It seems the I did not communicate in right way. For conbtroller/driver visit Phil's site - www.pminmo.com There you find out everything you need. Full of explanations. Just buy the components or get them from old printers and build it.

Zoltan

zet-jaro
09-08-2005, 12:15 PM
tnx man, that was a thing what are we looking for! we will soon start with building that wornder and we will upload some pics...

zet-jaro
09-12-2005, 10:48 AM
mkey.... i found some specifications about those motors so I need you to tell me is it ok for cutting some wood...

Specifications PM35L-048-HPD4
Nominal Voltage 24V
Resistance (Ohms) 30
Wires 5
Steps / Revolution 48
Step Size (degrees) 7.5
Current/Phase 500mA


Specifications : PM55L-048-HP69
Nominal Voltage 24V
Resistance (Ohms) 30
Wires 5
Steps / Revolution 48
Step Size (degrees) 7.5
Current/Phase 800mA

so what do you think?

zet-jaro
09-14-2005, 10:09 PM
anyone??

Sturmer
11-16-2005, 06:34 AM
Hm panjino kaj je sa onim kaj si nasel kod bosandjerosa?Ili da radimo ovo sa onog linka gore?Meni jos prokleto nije sjela placa tak da fakat neznam kad cemo pocet sa buildom...Jebeni NEODGOVORNI poslodavci :devious:

_________________________________________________________________


Well...we will start the build in cople of days hopefuly...(as soon as i get paid...hate late payments... :boxing: )

we found on some local site a good idea for the Z-axe...The driver step motor for FLOPPY disk unit...And the steppers shuld be bought, hopefuly in month ore two it shuld be over... :wee:

jarr88
01-23-2006, 12:01 AM
What is the best holding onze tork for a stepper motor in a cnc router

ViperTX
01-23-2006, 12:20 AM
Well guys if you want to have your own conversation...in whatever language....PM yourselves and spare the rest of us.

mohaon
04-29-2007, 10:38 AM
i am happy for jump with you

i am sorry for my english languag

thanks

Sturmer
05-01-2007, 04:29 PM
A project fell into BIG delay because of deaths in family and money...So hopefully i will start to build my control board that is posted here on forum, and as i will build it i will post building progress and pictures...so until then...

morphious69
12-29-2009, 08:04 PM
I would suggest looking for various stepper controllers in the DIY world as they are really simple on some counts. ones using 4000 series ICs should be easy to get the parts for and incredibly cheap to build. the main componets are like 1 dollar or 25 cents (there are two of each) per motor. look on instructables for tom macwire as he put up one that uses those. baring that there is a 7000 series set up too. for what you are doing they should work fine. and tons cheaper that the typical chips like the 5804b or sla units. though you are stuck with whole steps and half steps with some of them and the 400 series design only gives whole steps. Then you could use those photo copier motors.

Lord_Draco
07-23-2011, 09:18 AM
i got mine from 850 and 820 hp deskjet and would also know if those parts are reusable

tracyranson
08-18-2011, 02:24 AM
I have all the parts needed to make a driver using L298 l297 Ic's. I was told that it is possible to make this driver using single sided copper clad PCB but I cannot for the life of me find a schematic that can be loaded into eagle for a single sided PCB. Is there anyone out there who can point me in the right direction.

Joe S.
08-18-2011, 04:25 AM
I have all the parts needed to make a driver using L298 l297 Ic's. I was told that it is possible to make this driver using single sided copper clad PCB but I cannot for the life of me find a schematic that can be loaded into eagle for a single sided PCB. Is there anyone out there who can point me in the right direction.
Here are some useful links:
http://www.google.com/url?sa=t&source=web&cd=70&ved=0CFMQFjAJODw&url=http%3A%2F%2Fwww.hobbyrobot.cz%2FPDF%2Fst2.pdf&rct=j&q=robot%20controller%20l297%20l298&ei=ZMtMTrajEM_YiAK8n7hu&usg=AFQjCNEipqj1SlhQknkvrki1UQg9AFnPiA&cad=rja
Homemade Stepper Driver | wannafollow.com (http://www.wannafollow.com/k6-homemade-stepper-driver-306790.html)

tracyranson
08-18-2011, 09:40 AM
Here are some useful links:
http://www.google.com/url?sa=t&source=web&cd=70&ved=0CFMQFjAJODw&url=http%3A%2F%2Fwww.hobbyrobot.cz%2FPDF%2Fst2.pdf&rct=j&q=robot%20controller%20l297%20l298&ei=ZMtMTrajEM_YiAK8n7hu&usg=AFQjCNEipqj1SlhQknkvrki1UQg9AFnPiA&cad=rja
Homemade Stepper Driver | wannafollow.com (http://www.wannafollow.com/k6-homemade-stepper-driver-306790.html)

Thank you for providing this information. You are AWESOME!

harryn
08-20-2011, 01:59 AM
I would consider to look at the Linistepper driver. It is pretty easy to build and cheap.


In any event though, it will cost at least 30 dollars per axis for drivers. Pretty soon, a commercial driver looks interesting.

Money is always a challenge for everyone in this hobby. Perhaps visit some local machine shops and wood shops. Tell them what you want to do and see if they have any used parts that are helpful for you.

You might be surprised what they come up with. Perhaps in trade for some work.

Joe S.
08-20-2011, 05:43 AM
I would consider to look at the Linistepper driver. It is pretty easy to build and cheap.


In any event though, it will cost at least 30 dollars per axis for drivers. Pretty soon, a commercial driver looks interesting.

Money is always a challenge for everyone in this hobby. Perhaps visit some local machine shops and wood shops. Tell them what you want to do and see if they have any used parts that are helpful for you.

You might be surprised what they come up with. Perhaps in trade for some work.
I bought 3 kits from James Newton, and found the lini stepper to be a nice little kit, it worked well and got me hooked on PIC Microcontrollers.
LiniStepper, lini, stepper, linear, 6th microstep, linear microstepping stepper motor driver, constant current linear driver, circuit Linistepper boards, LiniStepper kit, hobby stepper, robot stepper driver kit, CNC stepper driver kit (http://www.piclist.com/techref/io/stepper/linistep/lini_tun.htm)

Lini stepper motor controller for Lathe Mill telescope | eBay (http://www.ebay.com/itm/Lini-stepper-motor-controller-Lathe-Mill-telescope-/290590870175?pt=PDA_Accessories&hash=item43a890ca9f)

GOOD.4286
08-20-2011, 06:08 AM
I bought 3 kits from James Newton, and found the lini stepper to be a nice little kit, it worked well and got me hooked on PIC Microcontrollers.
LiniStepper, lini, stepper, linear, 6th microstep, linear microstepping stepper motor driver, constant current linear driver, circuit Linistepper boards, LiniStepper kit, hobby stepper, robot stepper driver kit, CNC stepper driver kit (http://www.piclist.com/techref/io/stepper/linistep/lini_tun.htm)

Lini stepper motor controller for Lathe Mill telescope | eBay (http://www.ebay.com/itm/Lini-stepper-motor-controller-Lathe-Mill-telescope-/290590870175?pt=PDA_Accessories&hash=item43a890ca9f)

i feel that if u are going design ur own cnc machine it is best for you that do not use stepper motors. it is fact that stepper is cheap but cannot give u accuracy for long term
there is another forum at which they have hired persons to give consultancy for free about cnc machines.

http://www.fastektechnology.co.cc/cnc-forum/

Joe S.
08-20-2011, 03:26 PM
anyone??
Hello Jet-zaro,
Few people like to use 7.5 degree stepper motors because of the low resolution
pulses per revolution. Resolution can be increased using a gear reduction (I like cog belts) at the sacrifice of speed, you will get a nice torque increase too.

@tracyranson:
Beware of anyone trying to get your personal info.
If you start a new thread, and pm the link to me I will assist you as best I can so as not to hijack this thread any further.

GOOD.4286
08-21-2011, 12:50 PM
dear one,

i feel that it is a good forum which response via email. if required they also print solution to website.
i have not owned this thread or website. i hve no connection to this forum financially on in any other form. i have just visit it they solved my cincinati vm 750 problem giving alarm "servo magzine alarm".
i again paste the address if someone has any query you should paste your problem and expect best for you.
http://www.fastektechnology.co.cc/cnc-forum/