Subject:
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Re: *** MLCad V3.30 *** new feature request
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Newsgroups:
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lugnet.cad.mlcad
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Date:
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Sun, 23 May 2010 07:52:43 GMT
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Viewed:
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32667 times
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In lugnet.cad.mlcad, Aaron Duerksen wrote:
> Hi,
>
> This is something that's been bugging me for a while, but since MLCAD is free
> software and very useful even without this feature, I haven't made much of a
> fuss about it. However, I thought I'd throw it out here so others can comment
> on it and so Mike L. can pick it up and implement it if he wants to.
>
> A little background:
> I like to build (and therefore draw) complex mechanical contraptions that
> require lots of odd angles to make the pins line up. My latest one, for
> example, is a pneumatic train locomotive with working (not just decorative)
> Walschaerts valve gear. To draw something like this accurately, I currently
> have to:
> 1. Select all the parts that make up a push-pull link, starting with the pin
> that is already lined up (or set the rotation point manually)
> 2. Zoom in on the other end of the link, which is not lined up yet
> 3. Rotate by sub-degree increments until it's "close enough"
> 4. Do this again with the lever that it's supposed to attach to
> 5. Add some more parts and repeat
> 6. Guess at how it's going to work in real life
>
> My idea:
> Add a feature to MLCAD that would allow me to:
> 1. Define the link as a physical unit (however that's done)
> 2. Attach one end of the link (however that's done)
> 3. Attach the other end of the link (however that's done)
> 4. Add some more parts and repeat
> 5. Move any part (rotate the wheels in my example) and see exactly how it's
> going to work (or at least catch some of the bigger bugs)
> Basically, it's a motion simulator.
>
> For what I need right now, simply joining pairs of parts at user-defined points
> (relative to each part, not the origin) is good enough. More points would make
> a more rigid connection. The simulator would then move any part(s)
> automatically to satisfy all such points in the model. Eventually, I'd like to
> simulate gears and other parts that aren't always connected at the same
> point(s), but let's keep it simple for now.
>
> What do you think?
>
> Thanks,
> Aaron
That would be a great enhencement for MLCad and it should be possible. But I do
not know how many hours Michael L. has to spend for that.
If you want to try another application please try SR3DBuilder. As fas as I can
see the required feature is exacly what that app does.
Here the link to that app http://staff.polito.it/sergio.reano/
cu
mikeheide
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Message has 1 Reply:
 | | Re: *** MLCad V3.30 *** new feature request
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| (...) Wow! I think you're right! SR3DBuilder looks exactly like what I'm looking for...except I'm on Ubuntu Linux and it doesn't work in Wine, where MLCAD is flawless. I asked Sergio about this through his website, so I'll see what he says. Thanks (...) (16 years ago, 20-Jun-10, to lugnet.cad.mlcad)
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Message is in Reply To:
| | Re: *** MLCad V3.30 *** new feature request
|
| Hi, This is something that's been bugging me for a while, but since MLCAD is free software and very useful even without this feature, I haven't made much of a fuss about it. However, I thought I'd throw it out here so others can comment on it and so (...) (16 years ago, 22-May-10, to lugnet.cad.mlcad)
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