Solid works - segmented sketch

[DSagarra]

Hello friends, I exported to DXF a non-circular gear, I import it to solidworks, the sketch is constructed to based on segments, There is a problem with this, I will get some problem if  I can not get a curved defined sketch, some one face the same problem ? How does the sketch looks like in Autocad ?

[BobL]

DSagarra;

Gearotic uses line segments with it's dxf, our view was they are more universal in general and most DXF importers
will accept them. I do not own Solidworks so can't help, but I know it works fine in my AutoCAD.

Cheers
Bob
:)

[ArtF]

Hi:

  Gearotic puts out point line segments as a way of keeping accurate. Most cad programs have options to
convert if necessary, I use line segments as they typically are more accurate than a bezier conversion and the user can convert as they wish in various cad programs. I dont use SolidWorks either (Out of my pay grade. :) )
but my usual cad programs dont seem to have any issues..

Art

[DSagarra]

I do it fine right now but I saw some interference, first in solid works but later in Gearotic 2 too,  in every non-circular gear, attached a screen shot with  default settings non-circular gears.

[ArtF]

Hi:

  Yes, non-circulars are toothed by virtual hob, and I have default set to 50% tooth width for tigth fit, I recommend
lowering to the .47 or so for most uses. Youll see that allows a bit of backlash and stops the interferance. NonCirculars have
that kind of responce at times due to the way the pressure line varies..

Art

[DSagarra]

Width smaller than 0.5 give me more interference, greater than 0.5 no interference. I will use aluminum and a EDM (0.02 mm precision)machine do you have a extra advice ?

[ArtF]

Hi:

  I think your there. Sorry, you are correct, the width of the hole is being set as the control actually
controls the shaper, not the gear when doing non circulars. I think you should be good, if no interferance is seen, I expect
youll get a fine gear. Drop us a photo, I love the look of EDM gears. :)

Art