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Author Topic: resolution of dxf export-files of functional gears  (Read 214 times)
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lehmann
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« on: March 29, 2020, 07:35:19 AM »

Hello, I'm using many functiona l gears and there allways Comes up the difficult y that These gears are very "stepy" see Picture. This behaviour makes is hard to get These files into 3D Systems and extrude them to solids.
Is there a possibili ty to change the high amount of Little lines into a single Spline. Maybe integrate d in the Export function of Gearotic? Or coes anybody know a good tool to do so. I tried alot Systems but did not get really helping results.

BR Marc

Stay healthy


* stepy gear dxf.PNG (8.77 KB, 663x408 - viewed 18 times.)
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ArtF
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« Reply #1 on: March 29, 2020, 02:42:25 PM »

Hi Marc:

  Ive had  some success with importing them to Vexx and selecting the option to
convert them to arcs and lines. You do have to play with the tolerance settings in options
depending on the gears, but it will usually smooth quite a bit with the proper setting.

  The jaggies are the result of the way those gears are designed, by digital subtracti on
over the entire rotation.

Art
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lehmann
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« Reply #2 on: April 01, 2020, 04:16:43 AM »

Thanks for your answer. Vexx seems to be quite helpfull but dxf-file exported from Vexx can't be opened in Fusion360 . If I bring the simplifie d gear back to Gearotic and Export a dxf-file it can be opened in Fusion360 but seems to be an open contour and can't be extruded.

Any idea?
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ArtF
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« Reply #3 on: April 01, 2020, 07:17:03 AM »

Hi:

     Do you have Acad2013 selected in options as the output type in Vexx options settings? I find360fu sion doesnt
like any DXF prior to that.

Art
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Hessel Oosten
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« Reply #4 on: April 01, 2020, 10:21:31 AM »

Concernin g "open contours"

I always apply on contours that SHOULD be closed the command PEDIT (PolylineE DIT).
If the contours are carefully closed all than is converted to a "one and only line".
If there are not closed contours you can easily see them and close the problem simply.
So, it's a sort of quality control before problems can arise from non closed contours.

Hessel

p.s. Another frequentl y encounted problem while dxf's convertin g from one program to another is that there are lines on top of each other.
Milling programs can struggle with it !
The command "OVERKILL"
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