Broken Line Fragments occur after exporting Inventor Flat Pattern to AutoCAD DXF

[Anonymous]

This seems to be completely random, but sometimes after exporting an Inventor Flat Pattern to an autoCAD DXF file, some solid continuous lines become fragmented or broken into a bunch of smaller lines. This is most common on a bend relief radius for sheet metal parts. The arc goes from one solid curve to a bunch of little curved fragmented lines. This poses a problem for our CNC laser cutter, due to the fact that it wants to cut continuously along a line instead of along short fragmented lines with spaces in between. Is there a way to set Inventor or autoCAD dxf settings to prevent this from occuring?

[johnsonshiue]

Hi! If possible, please share an example here. If I recall the issue correctly, you can use a configuration file to correct the problem. Without an example, I cannot say it for sure.

Many thanks!

[kelly.young]

Hello @Anonymous are you selecting the face and then Export Face As...?

When the dialog box comes up try selecting Options... and changing File Version to R12, I have had better luck with it talking to plasma and water jet cutters in the past. 

Please select the Accept as Solution button if a post solves your issue or answers your question.

[iLimbani]

let me know if anyone has fixed this issue.

[johnsonshiue]

Hi! I am not sure if this is applicable to your case. On Inventor 2023, Save Copy as DXF in Flat Pattern contains a new option called "Arc Approximation." It will replace spline geometry to closest arcs instead of polylines.

Many thanks!