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Distinguished Contributor
Posts: 337
Registered: ‎01-17-2008
Message 1 of 7 (158 Views)

Knockout representation

158 Views, 6 Replies
08-18-2008 08:07 AM
Any good ideas on how to show a good representation (quick and easy) of a knockout on a thin steel part?
Distinguished Contributor
Posts: 337
Registered: ‎01-17-2008
Message 2 of 7 (158 Views)

Re: Knockout representation

08-18-2008 10:04 AM in reply to: jbscott2121
*Gary R Smith \(Autodesk\)
Message 3 of 7 (158 Views)

Re: Knockout representation

08-18-2008 10:20 AM in reply to: jbscott2121
How frequently is this an issue for you?

What sorts of knock-outs do you typically encounter?

1. Model the knock-out.
2. Include a center mark in the sketch.
3. Include an alternative sketch if the knock-out is complicated.
4. Create a Punch iFeature
5. Convert to a table-driven family of iFeatures (if you'll use a lot and
knock-out lends itself to being parameter driven)

With the Punch saved, you can now use in your folded models and subsequently
decide if you want to see:

a) the punch
b) the center point only or
c) the alternative sketch

in your flat pattern.

Gary R. Smith
Autodesk Manufacturing Solutions Division
Technical Publications - Subject Matter Expert
Portland, OR
2.33GHz 2GB IBM ThinkPad T60p; XP pro SP2
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Distinguished Contributor
Posts: 337
Registered: ‎01-17-2008
Message 4 of 7 (158 Views)

Re: Knockout representation

08-18-2008 10:24 AM in reply to: jbscott2121
Thanx Gary
*Gary R Smith \(Autodesk\)
Message 5 of 7 (158 Views)

Re: Knockout representation

08-18-2008 11:34 AM in reply to: jbscott2121
In the attached ZIP file, I have placed a simple R2009 sheet metal part onto
which I have placed several instances of the included iFeature. The iFeature
contains a table with three size variations. The iFeature places a hole in
the sheet, uses the same sketch to create the "still attached" blank (which
has had a radius applied to the back).

On placement, I used a single sketch to define the placement centers.

I deselected the centers that I didn't want on the first placement (then
shared the sketch).

I then reapplied using different diameters.

You can make your version as complicated as you want.

The flat pattern was then set such that the punch was shown using the center
marks only.

If you had a really complicated punch, you could create an alternative
sketch to represent the simplification that you wanted to show on your flat
pattern and include it with your sheet metal punch iFeature.
*Dennis Jeffrey
Message 6 of 7 (158 Views)

Re: Knockout representation

08-19-2008 01:28 AM in reply to: jbscott2121
Here's another punch fromthe Electrical Box in Inventor\Samples\Models

Dennis Jeffrey, Autodesk Inventor Certified Expert
Autodesk Manufacturing Implementation Certified Expert.
Instructor/Author/Sr. App Engr.
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wrote in message
Thanx Gary
Valued Mentor
Posts: 320
Registered: ‎04-10-2010
Message 7 of 7 (88 Views)

Re: Knockout representation

04-18-2012 07:43 AM in reply to: *Gary R Smith \(Autodesk\)

is there any way to put double knockout and single knockout in one punch tool?


now, i make two punch tools. one for single and one for double.


thanks a lot


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