Extruding from cylinder surface?

[AeroNucDef]

Hi all

Most of you are probably going to call me an idiot for asking this.

How do you create an extrude on a curved surface?

I've created a cylinder, shelled it out, now I want to create an outlet on the curved surface. It's just a pressure vessel with outlets that I'm trying to create.

I've tried extrude boss, extrude surface, tried inserting new planes.

What am I doing wrong? It's very frustrating.

Thanks

WF

 

[TheTick]

Make a plane at the end of the boss and extrude to the surface.

 

[AeroNucDef]

Thanks tick, I tried it your way but for some reason it wouldn't work.

I was able to get the outlet on to the surface by extruding a second flat surface on the end of the cylinder, and using that as a reference direction for the extrude. It's not a very accurate way of doing it though.

There must be an easier way to do it.

WF

 

[CorBlimeyLimey]

The method TheTick suggested should work. Can you post images or the actual file for review?

Alternate Method 1;
Create the outlet from a central plane of the cylinder before creating the shell.

Alternate Method 2;
Create the individual components of the pressure vessel, and then place them in an assy ... per the real life scenario (assuming the vessel is not being cast).

 

[rollupswx]

I tried... I was able to get

Zip and attach what you were able to do here. Someone will show you the easy way with your dataset. Best way to learn. We go to all of this trouble to communicate our designs with geometry - lets use the geometry to communicate.

 

[AeroNucDef]

I've attached a zip.

I've managed to create the outlet using reference geometry, but I'm having a few other issues.

I would be grateful if you could explain the following.

1. How to you make the outlet on the cylinder normal to the surface.

2. How do you create another outlet, say at 45 degree's (either direction) horizontally to the first outlet.

Thanks for your help

WF

 

[AeroNucDef]

CorBlimeyLimey,

Thanks for the files but my SWx won't open them, it say they are from a future version.

WF

 

[CorBlimeyLimey]

1) Constrain the circle in Sketch2 to the centre of the cylinder. eg Coincident with the Top plane. It is nearly always prudent to fully constrain all sketches.

2) Use the Circular Pattern function.

I suggest you work through the tutorials supplied in the Help file section.

 

[AeroNucDef]

The tutorials are OK if your dealing with flat surfaces, but there's not much help on curved surfaces.

 

[Gupta65]

You can also use revolve to create this (you might need to create an extra plane if the position is not on a default plane)

But as it is going to be an assembly in real world, I would suggest you to go for assembly. Create the two parts separately and then assemble them.

Deepak Gupta
SW2009 SP4.1
SW2007 SP5.0
MathCAD 14.0

 

[Eltron]

I think you're making this more complicated than it needs to be. Here are a couple of methods to get where you need to go. And as far as the tutorials go, this is pretty basic stuff, and I think you'd be doing yourself a service if you took the time to go through them all.

Dan

http://www.eltronresearch.com

Dan's Blog

 

[AeroNucDef]

Thanks Gupta,
I've done what you said. I created the parts and mated them together.
Also did it by using a reference plane and the circular pattern.


Eltron,
Thanks for the file, but it seems that my SWx won't open the file, says it's from a future version! I'm still on SW 2009 Sp0. The service packs are just to big for me to download.

I won't be upgrading until SW2011 is available

thanks

WF

 

[ctopher]

Also do a search on YouTube for "solidworks curved surface".

Chris
SolidWorks 09 SP5.0
ctopher's home
SolidWorks Legion