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how to do it ?

how to do it ?

RE: how to do it ?

Pictures are probably better than Inventor part files, especially since this is an AutoCAD forum section.

I, myself, cannot open Inventor files. I expect the modeling is pretty straight forward no matter the software - so a screenshot would probably make it easier to help you.

RE: how to do it ?

Can you export the file as a PDF file ?
B.E.

You are judged not by what you know, but by what you can do.

RE: how to do it ?

(OP)
first i posted in solidworks group since there is no inventor group. i was told to post in autocad group.
here are the JPG of rendered shape. file1 minics endmill cut, file2 (next thread) just a simple fillet at the corner.
without inventor to open ipt file, you may have problem to visualize the issue.
thanks.

RE: how to do it ?

http://www.eng-tips.com/threadminder.cfm?pid=790 <--- Inventor Group

I agree - I can't really visualize it too well from that image.

Are you doing some weird boolean subtraction? It looks like a cylinder representing an end mill has been removed from that 'puck' shaped blank, and arrayed every so often around a different radius. It looks like an attempt to use an end mill in a vertical machining center while the part rotates under it on a 4th axis rotary. But it may be a weird rendering effect...

I don't understand the question any better from the image in the post dated 7Nov16-20:04, though, sorry.

RE: how to do it ?

It looks like you made a single cylindrical cut, then patterned it a number of times through small angular increments?

If you want the cut to be smoother, you need to do a sweep - have the cutter shape follow a path (and or guide surface) that you define with a third sketch.

RE: how to do it ?

(OP)
as said, inventor (ours 2014) will not do sweep a solid but only a 2D sketch.

RE: how to do it ?

Yes, but if you use a guide curve that is a 3D sketch (and click on the boxes to have the profile remain perpendicular to the guide curve) you can sweep a rectangular profile to cut any given radius, mimic-ing the results of a spinning cylindrical cutter.

RE: how to do it ?

(OP)
btrueblood, do you have Inventor? would you please upload a file so i can see how it works?
thanks.

RE: how to do it ?

Yes, but it's 2016. I don't know how to save a file to 2014 format.

But here is a batch of pdf files showing how I built a sweep that I think does what you want...

Start from sketch 2 - a 2d outline of the cutter (I'm going to model a .125 deep cut with a .25 diameter end mill)
sketch 3 is an arbitrary arc, concentric with the bar and on its end face
I make a plane perpendicular to the end of the arc, through the axis of the bar (which I created about the global z-axis), and create sketch 4, which is just a line perpendicular to the end of the arc.
Sketch 4 was necessary to create workplane 2, which is tangent to my sketch 3 arc.
Sketch 5 is created on workplane 2, and is a simple arc with one end coincident and tangent to the sketch 3 arc and its work plane.
The sweep is then created from the sketch #2 as the profile, and using sketch 3 and sketch 5 as the path. Note if sketch 2 had overlap beyond the edge of the part, the turn radius along the edge would be less than zero, and the sweep would fail. I.e. I can't make a complete groove deeper than the radius of the cutter with this method, but would have to do it in two sweeps or other methods.

Ok, I didn't bother to make a 3d sketch, because I don't like how inventor's 3d sketch interface works, but you get the idea.



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