how do you extrude at an angle?

[Cathy984]

what im trying to do is to extrude a specifically shaped hole through a cylinder (not at its centre but somewhere on the edge) BUT the tricky bit is to get the hole to turn along (or rotate) by 30 deg until it reaches the the other side of the cylinder..

i was thinking of using variable sweep (managed to get sketches of the hole on either side - so i guess a blend is possible too) but it wont let me...
maybe its my chain and origin that the problem (not sure how those work exactly)...i did 2 datum curves from the sketches on either side... hmm just thinking now that maybe they have to be spline curves..
Help please...

Edited by: Cathy984

 

[miked]

I am not sure how you will make this part in production but try using boundary blend.


draw your first profile


copy>paste special/rotate/ a copy of the original into the second position


connect the corners using by creating a curve thru points


using boundary blend pick the curves in one direction (make sure that you pick them in order)


then pick the curbes in the second direction


I dont know which rev you are inthough, and I am in a nyquil induced haze


so your mileage may vary.


miked

 

[deepakbhat_nie]

HI,


Use Swept Blend<notmal to traj option.


Regards,


Deepak Bhat

 

[skraba]

The problem with angled trajectories in Sweep feature is tangency. Between the parts of the trajectory curve there has to be radius, which let Pro/E "to turn" the section. So, you basically create small radius between curve segments, but you should watch out for the section not to turn in itself on that radius.

 

[Cathy984]

hmmm... i managed to get a boundary blend... but how do you cut out the material within it... there is no option to remove material.


Dont understand what you mean Skraba..

 

[miked]

solidify>cut to remove material from a solid.

surfaces must be completely merged first.
miked

 

[Cathy984]

thanks miked... that worked..but theres still a problem... it made the hole but it didnt open the hole to the surface so it looks like a hole just on the inside of the surface and not like a slot.

 

[Cathy984]

im still stuck and running out of time...


I still cant get it to open up the surface of the hole to make it a slot..


any ideas still?


Cathy