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how to fix dot to dot curve

Question asked by Sinta Fajrian on Jan 30, 2015
Latest reply on Jan 31, 2015 by Paul Cullen

I use solidwork for modeling part that will be machined in CNC machine. Before processed in CNC machine, the CAD model processed in Mastercam to get the G-Code. I usually use iges format for transfer data from solidwork to Mastercam.

 

I found a problem with the CAD model in Mastercam. here is the example:

 

picture 1.JPG

 

The picture above is the example of automotive part CAD model that I made. I used extrude (solid feature) from the outline. Next, I used variable size of fillet, boundary surface, and cut surface, for making different size of chamfer (showed by the red arrow).

 

when I convert the model into iges and then opened in Mastercam, the wireframe has different type. see the picture below

 

picture 2.JPG

no 1 outline is read by the mastercam as continuous line, the arc showed as arc and has radius value. it impact the tool (cutter in CNC milling) can move smoothly and resulting smooth surface.

 

but no 2 and 3 is read by the mastercam as dot to dot radius, not as a continuous arc. it impact the tool move roughly, and resulting rough surface.

 

it maybe because line 2 and 3 aren't shaped from shaped outline like no 1. but, how to make line 2&3 as good outline< so that it isn't needed to redraw 2&3 line in mastercam...

 

any solution, please...

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