Simulated Weld
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Re: Simulated Weld
REAL Aluminum TIG-WELD!
Sent welder the jpg; Final product delivered! Looks OK!
Sent welder the jpg; Final product delivered! Looks OK!
Re: Simulated Weld
In the commercial CAD software I use at work, in those cases I have to build a weld manually with a sweep. (Honestly, the set of commands to create welds sucks)silopolis wrote: ↑Fri Mar 09, 2018 3:12 pm How would that work for "external" edge welds?
Feeling like spheres have the advantage of working in all flat, interior and exterior cases, aren't they?
But thinking about penetration too sweeping a circle, partly dipped in welded parts, could be another approximation option... WDYT?
The spheres going through the solid to mimic penetration may seem like a good idea; the problem is, it creates problems when you create blueprints. The edges between parts are masked by the "welds", which don't show edges at their intersection with the underlying part. So you have bunch of edges missing in the drawing. There's an option to calculate all intersections in views, but it slows down drawing generation a lot.
Here's a quick test with TechDraw:
- Attachments
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- FC017_Simulated_Weld_normandc1.fcstd
- (19.93 KiB) Downloaded 98 times
Re: Simulated Weld
No doubt about that; this is only intended for rendering/realism as far as I can see. No intention of weld-specification only weld-location.
Note the title "Simulated Weld".
Last time I saw welds spec.d in drawings was in an antique 2D-CAD product called CADDS from a company called COMPUTERVISION (https://en.wikipedia.org/wiki/Computervision ) and these contained specification for pre-heat, type of weld-rod, penetration, inspection-criteria, x-ray verification, weld passes, weld architecture (for instance: five passes over three passes over lowest pass), chamfer/bevels spec.s etc, etc., etc. Ive seen plenty of fine-looking welds completely removed by grinder. This is a serious chore when the weld is 30 to 40mm deep.
A fabrication shop where I worked part-time a very long time ago employed SET-UP guys. Thats what I did. Read prints, burn shapes out of steel/alum/alloys, cut-up stock, drill holes, bevel edges, and tack into place. Then the "Welders" would burn-stick (as they called it) for the next several days following someone elses instruction.
But these renderings make it easy for picturing a completed part; especially when the welder can barely read a print and requires a single pass!
Re: Simulated Weld
I agree. At the company I currently work with, we add welds to our CAD assemblies (sometimes it can be a PITA). The main drawing page shows ortho views of the assembly without welds. A secondary page shows the assembly in various isometric and detail shaded views with the welds. Welds have a different, dark color so they contrast with the rest of the view. These iso views have weld annotations.
Re: Simulated Weld
On the crazy exact wellding FreeCAD part should not be there a gap off 0.1 mm where the parts touch? Then on a FEM the welding only will be used to transfer loads from one part to the other?
Re: Simulated Weld
In the pic below the two "compression ears" were clamped before drill/tap/welding. This was done to provide a capillary pocket to maintain thread lubricant to the tapped/threaded hole, where a stainless-compression-bolt passes through an aluminum fixture operating in a semi-corrosive, saline environment.
All to mitigate electrolysis/corrosion.
Stress-wise, one ear would have been sufficient!
Re: Simulated Weld
OSE may be interested in this.marcin_ose wrote:ping
Alone you go faster. Together we go farther
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Want to contribute back to FC? Checkout:
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Re: Simulated Weld
Hi, I see that the circles refer to the welding, you could share the code or macro of those circles that do the welding function in the pieces.
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Re: Simulated Weld
Hi, I see that the circles refer to the welding, you could share the code or macro of those circles that do the welding function in the pieces.bill wrote: ↑Sat Mar 03, 2018 3:59 pm Look how good my welding skill have become!
Is there already an easier way to sim a weld in FC?
Be nice to have a feature to put line of adjacent spheres(size defined,spacing defined) on any line, arc, or spline selected!
This way is quite laborius but effective for price quoting by fab-shop.
myweldingskill.png
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Re: Simulated Weld
Hi, I see that the circles refer to the welding, you could share the code or macro of those circles that do the welding function in the pieces.freecad-heini-1 wrote: ↑Sun Mar 04, 2018 3:21 pm It's a monster, maybe good for the next Marvel movie ...
BOPCheck, I know, that's the same like fillets on faces with draft angle.
schweissnaht.fcstd
BOPCheck, filesize, it doesn't matter, but it looks cool.
coole_schweissnaht_rest_egal.png
Last edited by cinthia lizeth on Thu Jan 17, 2019 7:25 pm, edited 2 times in total.