How to offset extrude cut to a plane??

[MCF1]

Hi there,

I'm trying to insert an offset(angled) extrude cut into the surface of a part in solidworks and am stuck on the process of doing it. To simplify the part explanation the part in question would be a 4" diameter cylinder 1/2" thick, and I'm trying to extrude cut a 1" circle at the center of the cylinder top face but at a 15 degree angle to the top surface of the cylinder itself. For visual reference, think of a valve relief in the top surface and an engine piston.

I have read elsewhere that I likely need to insert another plane at the appropriate 15 degree angle in order to cut the extrude in this manner, but i'm lost as to how to go about doing this.

Can anyone lend a hand and explain to me how this is accomplished?

Thanks!

 

[Mihail]

I do not understand very well your problem.


If your extrude cut is conical see, in the EXTRUDE CUT properties window, the option DRAFT. If your cut is not normal to the cylindricalsurface then make a sketch, a LINE. That line will be the direction of your extrude. Of course, firstyou must define a plane andchoose this planefor the LINE sketch.


After all of that, startthe EXTRUDE CUT on the face of your cylinder and,in the EXTRUDE CUT properties window, select the LINE as direction for EXTRUDE CUT feature.


Hope you understand my english. Good luck !

 

[MCF1]

Mihail, I appreciate the response and help. I guess the best way to explain way I'm trying to accomplish is to post a picture of what I need to complete.

that is the picture of a piston with two valve reliefs cut into the top face of it. I'm trying to figure out how to do that myself and I guess I'm just really confused. they're basically just a couple half-round extrusion cuts into the top face, but they're done so at an angle to the top face(or top plane if you will). The step I cannot figure out is how to change the angle that the extrusion is made at so that the round cuts are made at an angle, 15 degrees in my case.

I am trying the method you mentioned of sketching a line and using that line to determine the angle on which to extrude apon but I'm not quite grasping the technique yet

thanks!

 

[MCF1]

Ok I think I just stumbled across teh process by accident here.

I fliped to the top plane view and created two points along the outer perimeter of the core 180 degrees apart. I then created a point-to-point axis between those points, and then created a plane through that axis at the 15 degree angle. Extrusion cuts on that plane now cut in at the appropriate angle.

Thanks for the help! Your idea of sketching the line is what made me try this idea and it worked!

 

[Mihail]

1 picture = 1 000 words (China)


Your task, now, is quite simple. Email me at [email protected] and I send you aPART file where you can see "how to". I try to upload the file heare but with no succes. Sorry.


Good luck !
Edited by: Mihail