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This might help reprap

Gene Hacker

This might help reprap
February 22, 2008 02:17AM

Check out these linear actuators that can be etched right onto a PCB:
[www.idlmotors.com]

I have no idea how they work though, presumably it involves magnets.

A fluid mechanical sewing machine:
[arxivblog.com]
Apparently, you can make different patterns by varying the extrusion height and speed.

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Howie

Re: This might help reprap
February 22, 2008 07:46AM

Registered: 18 years ago
Posts: 25

Fascinating! looked around a bit and found this page:
[blog.makezine.com]

Lots of stuff there. Search for 'z-drive'. Then you'll see that it works with magnets. At first sight it looks like a regular linear motor. Interesting question is how they got the coils that flat.

Howie

--
Airspace V - international hangar flying!
[www.airspace-v.com] for tools and toys

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nophead

Re: This might help reprap
February 22, 2008 08:58AM

Admin
Registered: 19 years ago
Posts: 7,883

Looks like the coils are just spiral tracks on the PCB.

[www.hydraraptor.blogspot.com]

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Forrest Higgs

Re: This might help reprap
February 22, 2008 09:16AM

Admin
Registered: 19 years ago
Posts: 1,915

I wonder what kind of positioning resolution they get?

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nophead

Re: This might help reprap
February 22, 2008 09:27AM

Admin
Registered: 19 years ago
Posts: 7,883

Same principal as a rotary stepper I would think. The gap between the magnets sets the basic step size but you could micro step to get higher resolution.

[www.hydraraptor.blogspot.com]

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deadgenome

Re: This might help reprap
February 22, 2008 11:00AM

Registered: 18 years ago
Posts: 77

ooo... etched linear motors.. gimme now... gimme now... I want NOW!!!

ahem.... sorry, went into 4 year old in a toyshop mode for a second, normal service will be resumed shortly, meanwhile here is some light music...

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Forrest Higgs

Re: This might help reprap
February 22, 2008 01:31PM

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Registered: 19 years ago
Posts: 1,915

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Attachments:
open | download - Kitty wants shiny device.jpg (63.7 KB)

VDX

Re: This might help reprap
February 22, 2008 02:48PM

Admin
Registered: 18 years ago
Posts: 14,164

... look here in an old discussion about reprapping/reprappable linear drives ...

Viktor

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r2kordmaa

Re: This might help reprap
April 12, 2008 05:12PM

Registered: 18 years ago
Posts: 46

heh patents pending... yeah good luck patenting that lol. anyway its just a simple linear motor on a pcb. you just make the tracks in the shape of coils. it wont have much force behind it i suspect, compared to conventional linear motors where you have lot more coils. its can be built with reprap ofcourse but i doubt it would have any use in reprap machine due to the lack of power

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RobertB

Re: This might help reprap
April 20, 2008 01:09PM

stack them for more power.

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r2kordmaa

Re: This might help reprap
May 04, 2008 09:14AM

Registered: 18 years ago
Posts: 46

hmmzzzz.... lets say 4-5 layer pcb-s, stacked like 10 of these on top of eachother.... why not you could technically get smth out of it
lets start building pcb mass drive tongue sticking out smiley

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tomato

Re: This might help reprap
May 29, 2008 12:33PM

Registered: 17 years ago
Posts: 8

you have to admit, having a little train going around your reprap as it printed would be great. you could also make a really long one and use it to indicate how long the printing job has to go.