Circular Cut at an Angle?

Hi All,

I'm trying to make a circular cut across the end of a round rod, but
with the cut being canted at an angle to the rod's axis. Basically I'm
trying to create relatively large radius cut using a relatively small
cutter. The shape of the cut is actually an ellipse when viewed at the
desired angle. Still confused? This technique is used on a vertical
milling machine where the end mill tool is tilted at some angle then
passed across the end if the vertically mounted rod. The resut is a
large radius cutout in the rod. I'm playing with a rod diameter of 1"
and an end mill dia of 3/4". My problem is getting SW to move the
circular cut across the rod with the two axes being something in the
45 deg range. Any ideas?

TIA
Dan

 

"Dan" :

Hi Dan,

Make a new PLANE at an angle at the desired location. Sketch circle on
this plane and do the Extruded Cut.

Willem

 

Are you looking for something like this (check Circular Cut in the
file section).

Deepak

 

I doubt it's a radius unless it's a ball endmill.

 

Hi Willem,

It's a little hard to describe... I'm not trying to make a circular
cut at an angle to the rod end, but rather a pass across the end in a
horizontal movement with the circular cutter set at an angle. The
difference is subtle, but has a must different result. The cut is
actually an elliptical which, in effect, yields an approximate radius
which is proportional to the angle of the cutter. The flatter the
angle, the larger the radius.

Dan

 

A picture says 1,000 words, I'm trying to wrap my head around what you
want but its just not happening..

 

See attached PDF.

What I'm trying to do is get SW to move the tilted endmill across the
rod horizontally along axis4 in order to see the resulting elliptical
cut in the rod.

Hopefully this will clear things up a bit.

Dan

 

Dan,

I understand what you want. To do this you need to calculate or
project the ellipse that is the tool profile as viewed perpendicular
to the cut direction. You may also be able to do this by sweeping a
solid cylinder if that ability is available in the version of SW you
are using. I am still on SW2005 and it does not yet have the ability
to sweep a solid. Here is how I would do it. Construct a solid
representation of the tool in the correct position to make the cut.
The open a sketch on a plane that is perpendicular to the cut
direction and convert the end profile of the tool into your sketch and
then sweep that.

Timelord