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how to create this fender in sheetmetal

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m1mason

m1mason

Mechanical
Jul 1, 2004
172
attached is a file that I having real trouble with.

I'm trying to model a fender from the side panel (blue colored) but I'm not successful in creating it as the unfolded view is not right.
Ideally I would like the fender to connect to another flange coming from the bottom edge of the yellow colored face. I tried creating a tab at the bottom lip of the part but to no avail. can someone shed some light. I've successfully done it Inventor but don't know how to best approache it in SWX.



Thanks,

MTM
 
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Mooload is acting up ... AGAIN ... try a different file host.

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Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
 
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can you suggest a reliable one please?
 
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Any of the ones listed in faq559-1177 should be OK. I normally use MooLoad but they seem to have had a lot of problems recently ... probably because they are so popular.

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Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
 
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Mooload is working but the file download is 0KB.

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Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
 
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I think you are building this SM part all wrong. I personally hate tabs, because you can build so much with a Edge flange and most people keep the Edge Flange rectanglar and don't change the sketch. Change the sketch to fit your design.

"RH Hood bend" should be part of the edge flange above it. Tabs are not suppose to work the way you have it. You can tell because if you unsuppress the Flat pattern it fails. You have to learn how to use these tools better. I am not trying to be mean here, but it does irritate me to some degree to see people chop at these files and then can't understand why it doesn't work.

You should not have to always make 3 features to get to one feature. Sketching helps give you the ability to fix that. Try editing the Edge flange more often and make it into what you want it to be instead of adding tabs to the same flange.

Regards,

Scott Baugh, CSWP [pc2]
faq731-376
 
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Scott,

As I mentioned in my first post I did it in Inventor with no issue at all. In INV I used the face tool which is similar to the tab tool in SWX.

I've attached a video of how it was done in Inventor. this is what I'm trying to do in SWX. you can see at the end that the unfold was seccussful.

 
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SW is not Inventor. Different methods need to be used to get the best results from each program.

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Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
 
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The part as drawn is impossible to make!

The "Edge-Flange5" feature would have to have mitred edges (where the sections meet) to be able to form them from one piece.

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Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
 
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Edge-Flange5 overlaps itself in the Flat-Pattern. You have created a part that can't be flattened, it's not SW's fault.
 
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Well, to a certain extent it is SWs fault. The programmers should have built in enough "intelligence" to disallow a feature which is impossible to cut from a flat. They have done it in other areas and it would have been very helpful had they done it here.

Here's a couple of alternatives.
One of them is not correctly sized, just an approximation to show an alternative method. Not necessarily better than your original ... just different.



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Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
 
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Inventor couldn’t make the same error SW has because it could only do one flange at a time. It might allow you to flatten all three flanges but it would still error because what you modeled is impossible to make.

Here is another fab option.

Also included is a picture of a question I have. CBL’s “fender-cbl2” part shows the fender attached to the running board. He used 2 flanges but the fender doesn’t match the body cut.

So the question is: How can SW use converted edges to define the flanges (the fender)?

I could see making a sketch with equations and linking flange features but… whew. One thing IV can do is a “contour flange”. Which uses a side view sketch like a thin feature to define the sheet metal. Then you pick an edge of existing SM to attach the contour flange and all the bends are auto added. It really is a simple and intuitive.

M1… you should look into using “rip” for your jeep. Rip is an abstract approach, but very powerful.
 
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Diemaker1 ... The mis-match you mention could have been eliminated by adding the correct angle constraint to the Edge-Flange5 & 6 features ... I was just being lazy and created a very rough model to show the basic principles.

Another method is to create a miter-flange from the attached portion of the fender & constrain the sketch elements to the profile, or use the Convert Entities tool on the profile edges.

[cheers]
Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
 
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Thank you guys. great suggestions. It looks exact the way I wanted it. I will post a video of the final result soon.

MTM
 
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Hmmm ... I wouldn't want to bend too many of those suckers by hand. [smile]

Is that for an actual job or just for fun?

If it's an actual job ... when do we receive the royalty checks? [lol]

[cheers]
Helpful SW websites FAQ559-520
How to get answers to your SW questions FAQ559-1091
 
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actually, a friend of mine gave me the physical model he got from work. It was a demo piece of what the machine they were look at buying is capable of. you simply put a flat sheetmetal and it will spit out the final product, according to him.

 
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CBL- yep that’s what I wanted. Miter flange almost duplicates IV’s contour flange. Funny how commands can hide right under my nose. Thanks.
 
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