Learning CAD

Phil,

that's impressive result. I was considering what you have done there before. But wondered how the curves would be programmed.

Suppose Mach 3 run through would test your program.

The cuvres are programed as arcs or as blend arcs i a line ie x,y pos arc start pos x,y arc center pos x,y arc end pos x,y

Or x,y pos end of line blend arc arc rad size end pos x,y

In tbe case of the control i use it will fill in some data for you and give options for otjer end points.

I keep meaning to down load the free mach 3 software to have a go in prep for building a small home cnc. But having one at work seems to push it down the order of projects.

Hope that was understandable.

Phil

Something like this though and you can't just plug in numbers.

Not only is the domed surface 3D milled but the engraved text follows the curve so it's a constant depth.

Wow. I need these skills.

just to illustrate more fully, here is a link to a project by someone else.

Edited By JasonB on 27/10/2013 16:46:07

Very true.

But you can turn the form, then point to point the decal adjusting the depth of cut to give the constant depth of cut.

The pleasure of engineering there are so meny ways to make a part

Lol

Phil

Edited By Phil L on 27/10/2013 16:39:50

Edited By Phil L on 27/10/2013 16:42:35

Tracl link link

Hi becky

Can you paste an actual link my tablet wont let me cut and paste text from a forum.

Plz

Phil

**LINK**

hope this worked

By the time i had typed that in the first one was showing as a link.

Thank you

Fantastic renderings my german is very poor was it done in solid works?

It looked very professional. Have they built it to the same standerd

Pass,

i haven't checked that bit. Just admired the build.

Had a quick look on the site it looks like most of the parts have been milled 2d the track links look to be flat plate parts then bolted together to simplify the milling but the cad drawing you had shown for you by another postie was posible without complex 3d milling with a little prep.

Just break the part down into simple steps. I can give a break down if there would be any intrest but i dont want to take the post to far off topic.

Phil

Rebekah,

I have no idea if the size is correct but earlier on JasonB challenged everyone to draw the pump - if you want the model (as an edrawings file that you can open and measure etc.) you will have to email me through this site and I will send it to you! It is 75mm long and 39mm dia with 6 off: 10mm pistons. They need springs putting in but I did not have time (and the seat area with the port needs a corresponding flat bottom hole for it to seat in). I have no idea if it will work or not, I just drew it to see if it was possible to get everything you need in such a small space.

Mark

PS. For all you track drawing time conscious types, this took around 3 1/2 hours to draw from start to finish - I think another hour or two would have a full set of detail drawings and assembly diagrams including full bill of materials (screws, bearings etc.) and exploded diagrams! If I get a chance after tea I might see how it looks as a rendered section.... 

pps. The model is reasonably parametric - IE. if you want to change the dimensions a little it should cope within reason - I'd like to see you do that with 2D 

Edited By Mark C on 27/10/2013 17:47:22

Edited By Mark C on 27/10/2013 17:50:24

Dam wish i could cad draw that well, how long have you been using the cad package you use. I think i might have to take a night course to get to grips with it.

Only problem is that will be in auto cad and we use tubocad at work and the two dont seem to sit well with each other

Phil

Very nice Mark, sorry I mucked up your Sunday afternoon.

J

Ah it seems i see a light.

2d vs 3d drawings - modeling not machining the parts cutter paths, as most of the parts above are turned parts standard 2 axis work. But still would like some advise about time scale to become ok with cad have the turbo cad course they did a few years back or is there a good on line one. And how long does it take a part timer to do?

Phil

Edited By Phil L on 27/10/2013 18:09:55

Really?

Phil I bought Alibre about a year ago and have just done the odd bit now and then. I'm not one to work through the lessons but did watch most of the videos, they may seem a bit gobbledygook at the time but once you start trying to draw actual things you remember something being shown in one of the videos, a quick rewatch and it makes sense.

I think if you can set aside 1hr a day for say a 2 -4 week trial you should be able to pic up the basics and then build from that.

Assembly of the parts took a while to get the hang of but they all seem to go together OK now. I have used the programme to order water jet cut parts over the net a few times and have a couple of projects drawn up to make.

Fantastic work thank you for the info will give it a look

Thanks again

Phil

Jason, is that a stock scene of a room with a rendered table placed in it or is it a photo? It gets harder and harder to tell these days!

Mark

Well this is corelcad

Had an issue but i got there

Edited By rebekah anderson on 27/10/2013 19:07:52