OxO Chamfer???

Hi Ben,

No, I really mean a OxO chamfer. Here is the definition from the help:

O x O—Create a chamfer that is at an offset distance (O) from the edge
along each surface. Pro/ENGINEER selects this by default only if D x D
is not available.
Note: This scheme is only available if the Offset Surfaces creation
method is used.

I was able to create a OxO chamfer, but was unable to figure out where
the dimensions (O) were measured from. For example for a DxD chamfer
it creates a chamfer that is at a distance (D) from the edge along
each surface. Thanks for your help.

Pablo,

 

Hi, Pablo.

The Offset x Offset is new stuff for me, but it appears what's happening
is:

1) The surfaces adjacent the selected edge (assuming you've picked an edge)
are offset by the input value.

2) An implied intersection curve defined by the offsets is pulled back
normal to the adjacent surfaces and become the chamfer edges.

If that's not clear I can post a jpg or WF2 model to a site that allows
attachments. It's pretty easy to see if you'll work with a couple of
planar faces that intersect at some angle other than 90 degrees.

 

Hi Jeff,

On a part that has wo planar surfaces that have an angle of other than 90, I
created a datum curve (with the suppose O distance) on the adjacent surface
but when I entered the O value the future edges of the chamfer did not pass
through the datum curve.... If you could post a JPG on a web it will be
appreciated, thanks.

Pablo,

 

...If you could post a JPG on a web it will be

Sure thing, Pablo.

http://www.mcadcentral.com/proe/forum/forum_posts.asp?TID=26182&PN=1

 

Thank you very much, now I see how the OxO chamfer is created. I still
wonder in what specific situation it is better to use this type of chamfer.

Pablo,

 

..... I still wonder in what specific situation it

Got me there. One possible; since the offset intersection curve is also
the center of a round of that size it should give you a chamfer that will
nest nicely in a fillet. Other than that, no ideas.