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It was some time ago that I asked the question in this thread: http://www.eng-tips.com/viewthread.cfm?qid=143198&page=1 But it is what is the foundation of what has become this thread. I might well report my findings. Just don't forget to breathe until then ... Thanks a lot for the valid...

Sorry for the dalay. Itsmoked, I don't know why, but I never came to think about that. Will check. sreid, yes there are six phases. I chose to make the animation continous, and so it became a bit confusing to watch. I don't understand the part with amplifiers. Turning the windings on and off...

Hello all! I have been thinking about making a linear motor. Several permanent magnets on a rail and a trolley with six anchors that is turned on and off in sequence. (sorry if the gif is hogging all resources) I have tried to draw this with a few different measurements. But I can't decide...

Thanks a lot! Very informative. Those teeth are made according to the system used in the US only. But the information is indeed very good.

Yes

The internet is vast and I searched for : cog, cogs, cogwheels, gear, spur, and a few others. Yet another set of Swedish words too. As you may be able to figure out, I came up with nothing. Much to my surprise. Yes I would like to buy the suggested book and more. I bet "Karlebo handbok"...

Thanks, another step forward.

I suppose understanding them would aid me in drawing them, which is the goal.

I am not a machinist, and I want to understand it, as previously stated.

It is a robotic finger.

Here is an image of the gadget in question so far

Qcad saves to dxf, but autocad won't recognise the format. Lisp? I can't say, but I am willing to try. Acad? I'll check it out. Got an address? I tried Google, but found everything but CAD forum. External spur, yes

I will gladly recieve any help, so please feel asked. Know though, that I use neither Solidworks or Windows, but Qcad (www.ribbonsoft.com) on Linux

Thanks! I appreciate it. It is closer than what I succeded with. Not perfect, but it's a step in the right direction.

I suppose a professional gearmaker would know far batter than me how to make the teeth. It is not likely though that a pro gets to make these ones. Not even dead certain it is going to be made at all. I guess I want to produce a image of an actual gear by your definition. It is the measurements...

I am drawing it with Qcad, and I have no libs. But I would like to make a drawing with all the data so as to be able to produce the modules.

I feel the need to design a module or two of a cogwheel. While I have seen many a nice picture on the net, I haven't come across a good description of how to actually design a cog tooth. My aim is a standard metrical spur cogwheel. This problem has bested even "Karl Bjorks lilla gula"

I believe You have brought this thread as far as it goes UKpete. Thanks loads. My ponderings are on the whole verified.

Allright! UKpete, You have been a real help! I think I have all my questions answered now (well, not by a longshot but I am covered). I did find http://en.wikipedia.org/wiki/Electromagnetism and similar sources of info on the web. The thing about the magnets, I don't want them to be switched...

I happened to click away a little and here are a few candidates: Vote? Am I right in thinking thee are too much loss in the first, and not enough benefit in the last?