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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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 Posted: Tue Sep 19, 2017 3:50 pm Post subject: Bus CAD model build |
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So I decided to make an accurate CAD model of a bus.
Spent a few hours and got the frame ruffed in. Each piece of metal is a separate part. The floor structure is accurate but I will need to do some detailed measuring on my bus to get the fames exact.
This will be done over time in my spare, spare time... I doubt I will make a complete bus model. The front doors and nose would be nearly impossible to draw accurately without scanning.
I will need some help to verify some dimensions from time to time. Especially on some internal parts. Also may need some details on original parts. Maybe someone has some accurate drawings or models of some parts that could speed things up also  I will keep this thread updated as I progress.
I am not planning to make construction drawings for individual parts although I want all detail to be in the model. My main purpose is to have accurate drawings with dimension that we can use to reassemble a bus. And its fun
Index
Jack Points
Outriggers
Tophats
Rocker panels
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My 64 Kombi restoration
My camper interior build
My 54 standard restoration
The Nova Scotian Barndoor (YouTube)
The Nova Scotian Barndoor (CAD drawings)
Last edited by sgellis on Mon Dec 11, 2017 1:25 pm; edited 4 times in total |
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Saul Koll
Samba Member
Joined: September 28, 2008
Posts: 191
Location: Portland
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| Posted: Tue Sep 19, 2017 6:53 pm Post subject: Re: Bus CAD model build |
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Really cool!
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"I wish you could smell the smell that's coming from the bus"... |
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VW Truck
Samba Member
Joined: April 21, 2017
Posts: 76
Location: WA
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| Posted: Tue Sep 19, 2017 9:05 pm Post subject: Re: Bus CAD model build |
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That's awesome!!!
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My 1959 Truck |
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germanx
Samba Member
Joined: July 29, 2010
Posts: 326
Location: Germany
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| Posted: Tue Sep 19, 2017 11:43 pm Post subject: Re: Bus CAD model build |
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Once you are finished, I am up to get a set of drawings.... 
Big Job!
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'73 Beach Buggy
'66 T1 Deluxe |
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LAGrunthaner
Samba Member
Joined: March 18, 2007
Posts: 5505
Location: 1st Coast
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| Posted: Wed Sep 20, 2017 3:31 am Post subject: Re: Bus CAD model build |
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Nice job, what software are you using sgellis? We use Autodesk Inventor in our classroom, which if you want to save as stl file and 3D print. Nice fun for long cold winters.
| sgellis wrote: |
So I decided to make an accurate CAD model of a bus.
Spent a few hours and got the frame ruffed in. Each piece of metal is a separate part. The floor structure is accurate but I will need to do some detailed measuring on my bus to get the fames exact.
This will be done over time in my spare, spare time... I doubt I will make a complete bus model. The front doors and nose would be nearly impossible to draw accurately without scanning.
I will need some help to verify some dimensions from time to time. Especially on some internal parts. Also may need some details on original parts. Maybe someone has some accurate drawings or models of some parts that could speed things up also I will keep this thread updated as I progress.
I am not planning to make construction drawings for individual parts although I want all detail to be in the model. My main purpose is to have accurate drawings with dimension that we can use to reassemble a bus. And its fun
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_________________
American Red Cross Safe And Well:
https://www.redcross.org/about-us/news-and-events/...bsite.html
Maui Roadsters 
www.mauiroadsters.com
http://www.oacdp.org
| Lind wrote: |
| Have you considered simply starting with a nicer bus? I don't know what your skills are, but the race is easier if you can see the finish line. If you are not a runner, don't start off doing a marathon. |
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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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Hsolo
Samba Member
Joined: June 18, 2016
Posts: 19
Location: NFLD
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| Posted: Wed Sep 20, 2017 5:43 am Post subject: Re: Bus CAD model build |
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| What an awesome idea! Can't wait to see this come together. |
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LAGrunthaner
Samba Member
Joined: March 18, 2007
Posts: 5505
Location: 1st Coast
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| Posted: Thu Sep 21, 2017 1:56 am Post subject: Re: Bus CAD model build |
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sgellis, interesting the sheetmetal file format is foldable? I'll have to try them. Yea 1 to 1 scale 3D printed would be cool LOL.
| sgellis wrote: |
| LAGrunthaner wrote: |
Nice job, what software are you using sgellis? We use Autodesk Inventor in our classroom, which if you want to save as stl file and 3D print. Nice fun for long cold winters.
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I am using inventor 2018. Most parts are created as sheet metal parts and can be unfolded.
3D printing would be a problem with the thin wall parts. Maybe it could be printed at 1:1 scale though... |
_________________
American Red Cross Safe And Well:
https://www.redcross.org/about-us/news-and-events/...bsite.html
Maui Roadsters
www.mauiroadsters.com
http://www.oacdp.org
| Lind wrote: |
| Have you considered simply starting with a nicer bus? I don't know what your skills are, but the race is easier if you can see the finish line. If you are not a runner, don't start off doing a marathon. |
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Peter_N
Samba Member
Joined: February 19, 2014
Posts: 321
Location: The Netherlands
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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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| Posted: Thu Sep 21, 2017 7:04 am Post subject: Re: Bus CAD model build |
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| LAGrunthaner wrote: |
sgellis, interesting the sheetmetal file format is foldable? I'll have to try them. Yea 1 to 1 scale 3D printed would be cool LOL.
| sgellis wrote: |
| LAGrunthaner wrote: |
Nice job, what software are you using sgellis? We use Autodesk Inventor in our classroom, which if you want to save as stl file and 3D print. Nice fun for long cold winters.
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I am using inventor 2018. Most parts are created as sheet metal parts and can be unfolded.
3D printing would be a problem with the thin wall parts. Maybe it could be printed at 1:1 scale though... |
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Sheet metal works well. Very easy to create parts. Falls down on areas that are stamped though.
Here is a front outrigger with a flat pattern generated. I still need to verify a bunch of small details but I don't have an original outrigger to look at. I replaced all the outriggers on my buss. For this part I will look for photos and then I may need to request a measurement or two.
_________________
My 64 Kombi restoration
My camper interior build
My 54 standard restoration
The Nova Scotian Barndoor (YouTube)
The Nova Scotian Barndoor (CAD drawings) |
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LAGrunthaner
Samba Member
Joined: March 18, 2007
Posts: 5505
Location: 1st Coast
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| Posted: Fri Sep 22, 2017 2:33 am Post subject: Re: Bus CAD model build |
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sgellis, wow that is great, so you draw it in the ipt then it flattens out on the idw? If so then the software makes all the adjustments for the bends, which makes for an easy transfer to metal. After using Inventor for our engineering program for over 10 years I've had a hidden very cool feature right under my nose. With your permission I'd like to print this for my classroom.
| sgellis wrote: |
| LAGrunthaner wrote: |
sgellis, interesting the sheetmetal file format is foldable? I'll have to try them. Yea 1 to 1 scale 3D printed would be cool LOL.
| sgellis wrote: |
| LAGrunthaner wrote: |
Nice job, what software are you using sgellis? We use Autodesk Inventor in our classroom, which if you want to save as stl file and 3D print. Nice fun for long cold winters.
|
I am using inventor 2018. Most parts are created as sheet metal parts and can be unfolded.
3D printing would be a problem with the thin wall parts. Maybe it could be printed at 1:1 scale though... |
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Sheet metal works well. Very easy to create parts. Falls down on areas that are stamped though.
Here is a front outrigger with a flat pattern generated. I still need to verify a bunch of small details but I don't have an original outrigger to look at. I replaced all the outriggers on my buss. For this part I will look for photos and then I may need to request a measurement or two.
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_________________
American Red Cross Safe And Well:
https://www.redcross.org/about-us/news-and-events/...bsite.html
Maui Roadsters
www.mauiroadsters.com
http://www.oacdp.org
| Lind wrote: |
| Have you considered simply starting with a nicer bus? I don't know what your skills are, but the race is easier if you can see the finish line. If you are not a runner, don't start off doing a marathon. |
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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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| Posted: Fri Sep 22, 2017 5:26 am Post subject: Re: Bus CAD model build |
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| LAGrunthaner wrote: |
| sgellis, wow that is great, so you draw it in the ipt then it flattens out on the idw? If so then the software makes all the adjustments for the bends, which makes for an easy transfer to metal. After using Inventor for our engineering program for over 10 years I've had a hidden very cool feature right under my nose. With your permission I'd like to print this for my classroom. |
The software takes care of the calculations. There are unfolding rules for sheet thickness and materials. I added custom rules for some plastics we use.
Its especially cool when constraining the sketches to existing parts. The outrigger is constrained to the frame and inner rocker so if I change their size or position the outrigger will stretch to conform and the flat view will update.
I suggest doing some sheet metal tutorials. And feel free to use these.
_________________
My 64 Kombi restoration
My camper interior build
My 54 standard restoration
The Nova Scotian Barndoor (YouTube)
The Nova Scotian Barndoor (CAD drawings) |
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EeVeeWee
Samba Member
Joined: April 02, 2015
Posts: 836
Location: Amersfoort, Netherlands
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| Posted: Fri Sep 22, 2017 11:48 am Post subject: Re: Bus CAD model build |
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I real like this!
In the past I also worked with a 3D CAD system (Solid Designer) and still miss it sometimes.  |
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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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| Posted: Fri Sep 22, 2017 12:40 pm Post subject: Re: Bus CAD model build |
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Ruffed in a bit more. Need to go measure some on the bus. This would have been easier when it was on the rotisserie.
About half of this is accurate and the rest guessed. It is very easy to change a parts dimensions.
I do need to decide on a longitudinal zero point. (using top of frame as Z axis) Center rear torsion beam is the logical spot but in reality it is hard to measure to the center of a tube. I am thinking the rear of the bulkhead (front of top hat). Most will have something there to measure from.
Problem I have is that is a difficult point to measure from if you are not working on the cargo floor.
I would like to give XYZ coordinates of bolt holes for alignment. I have a laser frame alinement system that I will setup on my bus to verify dimensions. With this system a hole or bolt is much easier to setup to. VW used the top front holes on the torsion tube for a couple measurements... Any thought on the are welcome.
I want the drawings to all be consistent.
_________________
My 64 Kombi restoration
My camper interior build
My 54 standard restoration
The Nova Scotian Barndoor (YouTube)
The Nova Scotian Barndoor (CAD drawings) |
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mandraks
Samba Member
Joined: November 28, 2004
Posts: 7047
Location: Lawrenceville, Ga
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| Posted: Fri Sep 22, 2017 3:47 pm Post subject: Re: Bus CAD model build |
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would this not best be done with a laser?
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regards
Uli
----------------------------------------
'53 3-Fold Oval, L35 Metallic Blue, looking for a narrow hatch panel |
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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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| Posted: Sun Oct 01, 2017 5:50 am Post subject: Re: Bus CAD model build |
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Been a busy week so no new modeling. Also not going to do anymore until I make a decision.
I am considering changing the CAD platform for this project to Autodesk Fusion 360. It is cloud based so I will have access to it from anywhere and on any connected device. Controls are very close to inventor. Not as powerful but seems a good fit for this project. Allows markup from my phone that will be very useful.
The big thing Fusion 360 does is allow others to contribute. I can invite people to the project and it keeps all revisions and edit information. It is also relatively inexpensive and has a free education licence. Good help system and relatively easy to learn.
I want this to be freely available to the community and allow the community to contribute... And possibly the community or a small group to share ownership at some point so it doesn't get lost. Just need to figure out how best to accomplish it.
Anyway, for now I need to move the project to a CAD system that allows easy shared work space and is affordable. Quite sure it will be Fusion 360.
_________________
My 64 Kombi restoration
My camper interior build
My 54 standard restoration
The Nova Scotian Barndoor (YouTube)
The Nova Scotian Barndoor (CAD drawings) |
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Eisenwolf
Samba Member
Joined: June 21, 2010
Posts: 49
Location: West Germany
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| Posted: Tue Oct 03, 2017 4:58 am Post subject: Re: Bus CAD model build |
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Awesome! I am impressed of the extensive work you have done.
I started to rebuild the vw beetle in 3D, but not in CAD. |
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sgellis
Samba Member
Joined: July 06, 2016
Posts: 2013
Location: SW Nova Scotia, Canada
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| Posted: Wed Oct 18, 2017 6:24 am Post subject: Re: Bus CAD model build |
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Decided to move the project to Fusion 360. https://www.autodesk.com/products/fusion-360/overview It requires recreating all the parts to keep them easily editable so been doing that while getting used to the new system.
The floor frame is about done. Just need to do a bit more measuring to get all the details fixed up. Rear frame is just guessed.
This link brings up a model viewer. http://a360.co/2kXtuT6 it is the working model of the floor frame so at times it may be a bit messed up if I am working on it. As I complete sections I will make them accessible to download and make some drawing views. Haven't decided how I will do that yet but it will likely be links here until I get farther along. Fusion can publishing direct to GrabCAD so that is one possibility.
I am also creating drawings of each part. Mostly for easy verification of dimensions. I will be asking others help in verifying dimensions and details on some parts as I go. Eventually I want to add year and chassis model versions.
This is fun but definitely a long term project. I welcome anyone that would like to get involved.
viewer... http://a360.co/2yx056W
_________________
My 64 Kombi restoration
My camper interior build
My 54 standard restoration
The Nova Scotian Barndoor (YouTube)
The Nova Scotian Barndoor (CAD drawings) |
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