making a rollcage

[lekhu88]

ok...first of all...im a newbie...
i have to design a rollcage of a vehicle.(buggy type frame)
I started plotting points in 3d according my reqd dimensions in Part Design workbench.Then i joined them with lines and did the rib command.
But this doest join the ends of pipe...
Plz suggest me some method...

[MrCATIA]

To make the rollcage as one continuous rib:

in the GSD workbench:
1. Add CORNERS where the lines meet, to represent the bend radius of the pipe
2. JOIN the lines and corners into a single, continuous curve.

switch to Part Design workbench, and
3. make the RIB

[lekhu88]

Thanks mr catia.
But i cant still figure out what to at the corners where three lines meet.....
The corner command seems to work for pts where 2 lines are meeting..

[MrCATIA]

Make a separate Rib for each piece of pipe that makes up the rollcage.

(you might want to make each pipe(rib) a different size (different OD and ID))

Use the CORNER and JOIN only for a series of lines that define the shape of a bent piece of pipe.

So, when 3 pieces of pipe end at the same point, you need to make 3 different RIBS in CATIA.

Depending on how detailed you want to get, you might put all the ribs into a single PartBody, or you might want to put each rib into it´s own PartBody, or...

In Industry, most companies will make a separate CATPart file for each piece of pipe and then use the Assembly Design workbench to bring all the parts into the rollcage assembly as a CATProduct. The Welding workbench can be used to define how all the pipes are welded together.

[ghitza]

hello,
you can try to use polyline from GSD, and edit with all radius you need.

[lekhu88]

ok...i tried doing the polyline in GSD workbench...but wen i try to rib it...it says
Sweep Operator:
The centre curve is neither continous in tangency nor planer.....


??