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+--- Thread: SolidWorks Plugin calculates wrong perpendicular in certain cases (/Thread-SolidWorks-Plugin-calculates-wrong-perpendicular-in-certain-cases)
SolidWorks Plugin calculates wrong perpendicular in certain cases-maexbecks-04-09-2019
Dear RoboDK Staff,
I have a problem with the SolidWorks plugin. I use SW 2017 SP5 Pro and RoboDK 3.6.2 64 Bit Pro.
I have a part similar to the one that I uploaded. When I choose the surfaces and the curve on one side of the part the perpendicular gets calculated just fine. But when I choose the surfaces and curves on both sides something goes wrong. Also when I choose four surfaces and three curves the result seems odd.
Am I doing something wrong?
RE: SolidWorks Plugin calculates wrong perpendicular in certain cases-Jeremy-04-09-2019
Hi maexbecks,
This can be easily adjusted by modifying one parameter of your SW Plugin.
In your RoboDK, in SolidWorks, press settings.
Then bring the "Mix Normal Tolerance (mm)" to a lower value. I tried with 0.001 with your part and it worked just fine. See pictures below.
This situation is not a bug.
Therefore I'll be moving the thread to the general discussion section by tomorrow morning.
Have a great day.
Jeremy
RE: SolidWorks Plugin calculates wrong perpendicular in certain cases-maexbecks-04-10-2019
Hi Jeremy,
谢谢你的回答。你能解释一下吗the purpose of this parameter?
And also I tried it on my real part and the upper normals again were completely orthogonal. I did not think that the measures mattered so I created the sample part with other dimensions than the original part. After I changed them also here the two upper curves have orthogonal normals. I uploaded the part again.
Anyway ... instead of exporting the part with all curves in one turn I now have grouped them instead. This worked very well.
Regards, Maxim
RE: SolidWorks Plugin calculates wrong perpendicular in certain cases-Albert-04-10-2019
Hi Maxim,
This tolerance is the distance between each point in a curve and its projected point on a surface to allow mixing curve normals from different surfaces. If you set it to -1, only the first/closest surface will be used to extract the normal.
If the curves are the intersection of 2 surfaces, a very small value such as 0.001 mm tolerance should work or anything under 0.1 mm (which I believe it is the default).
Albert