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2muchstuff,
Let us know what you find. Those machines sound very promising.
Jason
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The new pdf is not an exact match either. Based on their values the copier stepper is 180oz/inch plus.
Jason
2muchstuff,
Let us know what you find. Those machines sound very promising.
Jason
Some pics of the three different sizes of fans in the copiers, a power supply and a closeup on the leadscrews which appear to be a four start thread.
Jason
Last edited by Jason Marsha; 04-26-2006 at 06:21 PM.
I have gotten about 120 skate bearings from these four copiers plus another 40 of different sizes. Some have to be cleaned but most of them are ready to be used
Jason
Last Thursday I scrounged up a Kulicke & Soffa manual ball bonder. This machine bonds those micro fine gold wires between semiconductor chips and the leads that go to the outside of the chip. Kind of a neat machine but no large steppers only one small one that positions the chip/worksurface in the Y direction. Maybe I'll have better luck this evening.
If it's not nailed down, it's mine.
If I can pry it loose, it's not nailed down.
Originally Posted by 2muchstuff
so how does it move in the other axis(s)?
the precision has to be amazing- dont suppose the unit worked?
maybe...
The unit had too many pieces missing to make it work again. Too bad they had taken the roll of gold wire. It would have been nice if someone hadn't taken the stereo microscope off of it. The unit had a mechanically linked joystick to position the worksurface in the x and y directions. That plate then had a small stepper to move the worksurface further in the y direction.
Came up with 3 large barcode printers, 1 medium sized unipolar stepper in each. Also got a hold of some kind of hemoglobin machine, a quick look revealed at least one small THK type of rail and truck.
If it's not nailed down, it's mine.
If I can pry it loose, it's not nailed down.
Done any more scrounging or have you given it up and don't need any more parts and pieces. I finally got to the hemoglobin/coagamate machine and tore it down. Once I got the cover off----OH MY GOD---- A bipolar stepper driven w/ encoders, 3 axis robotic arm on THK rails, x- 20mm, y- 9mm, z- 7mm with L298 drivers. Overall movement is x- 15", y- 5 1/4", z- 5 1/2". By moving some of the stops I may be able to increase the x and y a bit. All I can say is so much for the 3/8" thick 24" by 30" aluminum base plate that I was going to cash in for scrap. I want another one or two or three......
When I get home this evening I will post some pictures. The work computer here is not camera friendly.
If it's not nailed down, it's mine.
If I can pry it loose, it's not nailed down.
hmm...today I looked at this tall canon a3 copier (does model 4020 sound right?) and I am dissapointed. I have seen 2 servos in there for paper feed thingy together with that wire drive that was mentioned in another thread on linear motion (it's a braided steel cable btw) but I have only been able to spot a single puny 7.5 deg stepper that probably does some silly task. NOT A SINGLE STEPPER IN SIGHT!!! Now can someone explain to me what the heck is going on here? No I haven't taken any pictures but basically we unscrewed the back panel and there was a plethora of dc motors, shafts, pulleys and even a chain (almost sized like one off a bicycle!) but just that one tiny 7.5deg stepper. No 3A 200oz-in big steppers in there.
There were also paper feed trays at the bottom of the machine but I couldn't see anything without fully dissasembling it, only pulleys and things.
what bits of the machine do big steppers drive? the document feeder is powered by two servos with big encoders slapped on one end, that I'm sure of. but I don't know what function the stepper has. to drive the drum perhaps? or something else completely?
I am not really sure what the steppers drive. The bigger steppers I retrieved were up at the top of the copier (not the ADF). There are some copiers that do not have steppers, while others may have five phase steppers which need a special driver.
Keep on trying different models of copiers and you will get lucky.
Jason
Hi,
These are my steppers and brushless motor summary for you referance.
Steven
mct.motor@msa.hinet.net
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