Sketching onto a sphere

[bigterry]

Hello all,

I just started learning Pro/E at school, and I'm getting along rather well for now!
So, I made a sphere using the Revolve tool.
How can I now make an extrusion onto the sphere?
Pro/E doesn't let me choose the surface of the sphere when I click on Placement > Define.

 

[Sean Powell]

Then you need another surface to start the extrude from. You can create a datum plane tanget to the sphere or off of the basic 3 datum planes and use them (You did start with 3 planes and a coordinate system, right?). You can use the basic 3 datum planes and extrude outward from the center. You can create a flat surface using an extrude or a revolve for your sketching planebut if you need to ask how to extrude into a sphere you probably arn't ready for surfaces yet.


Hopefully this helps.


Sean

 

[cpoirier]

Make a plane by selecting one of the main datum planesand drag it outside the sphere. Pro E does not work with bothlead/follow. Sometimes it interprets what you have selected to determine what the tools will do (lead only). so select one of the surfaces and then use the offset tool. next use the sketch option and play around. here is some advice about pro e. experiment and try things; if it takes 20attempts the first time to get what you want then you learned something. Keep a notebook. Keep in practice. Pro e has a dificult interface but is powerful, better than other packages in it's price class........ for now.


If you just want to cut out some of the sphere use the same plane sketch on it and cut using the extrude tool. There are surface options to make a caped end I think.


Good luck

 

[garymig]

you need to create a plane off the part. Then you can either sketch on that plane and extrude up to that surface, or sketch on the plane and project that geometry onto the sphere itself. Then you can use thatas your pathas asweep.


Good luck,


Gary

 

[cristelino]

Garymig is right

 

[bigterry]

Thanks everyone!
I was able to create a new plane for my extrusion.