CONVERT PLINES INTO SPLINES IN INVENTOR

[Anonymous]

Hello,

I would like to know is there any possibility to CONVERT PLINES INTO SPLINES IN INVENTOR  or control/eliminate vertices in sketch which is imported from AUTOCAD MECHANICAL 2016.

In detail,

I have runner blade profiles drawing in AUTOCAD, I had imported the profiles and placed at different planes in Inventor Environment and used LOFT command to design blade profile, I am observing polygonal, “rugged” look of the surface which is caused by the Loft command creating faces that are delimited by the points used to form the joints of the PLINEs. Please find attached snapshot  rugged surfaces.jpg

After a closer inspection of the profiles used for the loft, they are formed by small straight lines joined together by multiple constraints. It seems that during the export process of the sketch profiles from AUTOCAD, the original SPLINEs (curved, continuous lines) were converted into PLINEs (sequences of jointed straight lines forming an arc). Please find attached snapshot Pline.png

In AUTOCAD, I had used PEDIT command and LISP Programme which is available in other discussion forums, but of no use.

Is there any code in Inventor, so that I can remove vertices and converting profiles into SPLINES.

Please let me know, how to fix this issue.

[adam.nagy]

Hi Mahesh,

You could write a function that converts the lines into a spline. You'd just need to determine which lines to keep straight and which ones to turn into a spline.

Also wondering if maybe there is some setting in Inventor to bring the SPLINES in as splines instead of converting them to lines.

Cheers,

[weiser]

This question is beeing a bit outdated ...

but a little time ago I've been using for a solution. Though I did not find anything, I've wrote some code...

You may look for it at:

https://forums.autodesk.com/t5/inventor-forum/tool-convert-polyline-to-spline-2d/td-p/8779347