Buggy Chassis a2plus symmetric design

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wolD
Posts: 15
Joined: Thu Apr 22, 2021 10:14 am

Buggy Chassis a2plus symmetric design

Post by wolD »

Hi Guys,

hope you´re all well! Iam very new in the forum and meanwhile i did read a view things.
Because of my old job i have 5 years expirience with Solid Works and now i have a private project with a view friends.
We want to build up a offroad Buggy. I decided to try the construction with FC.
Now first step i is to build up a chassis frame with rectangular tubing 30x30x2.

I decided to make the assembly with a2plus because that workflow reminds me on that in SW. I like the constrain mechanik.
Its very helpfull to have the advantage that the hole assembly updates when i change some single part.

The frame is a symmetrical assambly. For this in some ways it would be helpfull to have symmetrical constrains. Iam not shure, but i dont get those constrains / pairings work with a2plus. I even tried to make me some "help geomitry". For this i tried do some sketches in Parts and a2plus WB directly. I tried to do sioe Datum Planes in the Parts. I was looking for a coordinate system in a2plus WB but i dont find a propper solution.

So may possible that i have the wrong thinking. But eventually you have some ideas for a nice solution!

I will attach an example assambly and the Parts.

Here a Pic to show you what i want:
Image

OS: Windows 10 Version 1909
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24276 (Git)
Build type: Release
Branch: releases/FreeCAD-0-19
Hash: a88db11e0a908f6e38f92bfc5187b13ebe470438
Python version: 3.8.6+
Qt version: 5.15.1
Coin version: 4.0.1
OCC version: 7.5.0
Locale: German/Germany (de_DE)
Attachments
Symmetry.jpg
Symmetry.jpg (30.02 KiB) Viewed 1113 times
Tube 30x30x2.FCStd
(32.48 KiB) Downloaded 24 times
Exsample.FCStd
(20.63 KiB) Downloaded 26 times
Beam_angled 30x30x2.FCStd
(30.66 KiB) Downloaded 21 times
Beam 30x30x2.FCStd
(37.17 KiB) Downloaded 23 times
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thomas-neemann
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Re: Buggy Chassis a2plus symmetric design

Post by thomas-neemann »

wolD wrote: Thu Apr 22, 2021 10:50 am
because nobody seems to have a suitable answer, i offer you an alternative way. if you want, I can link videos to you here.

Greetings Thomas
Gruß Dipl.-Ing. (FH) Thomas Neemann

https://www.youtube.com/@thomasneemann5 ... ry=freecad
wolD
Posts: 15
Joined: Thu Apr 22, 2021 10:14 am

Re: Buggy Chassis a2plus symmetric design

Post by wolD »

Hi Thomas,

Ya, it's quite silent in this Topic. But I can't imagine that iam the only one with this problem. Most of the "big" CAD Systems work on Constrained Assemblies.

How ever. Show me your Video. Iam interested in your suggestion! :idea:
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thomas-neemann
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Re: Buggy Chassis a2plus symmetric design

Post by thomas-neemann »

wolD wrote: Sat Apr 24, 2021 10:31 pm
here are some suggestions

phpBB [video]



phpBB [video]



phpBB [video]
Gruß Dipl.-Ing. (FH) Thomas Neemann

https://www.youtube.com/@thomasneemann5 ... ry=freecad
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