We work with Solidworks 2017 SP3 and use Mastercam 2017.
We encounter machining problems, when we machine a radius from our 3D Solidworks it is machined with facets, when we check the program it turns out that Mastercam translates this radius into straight segments, which is not normal. In the graphical interface, when we select the edge in question, it recognizes it as a single edge.
We tried with 3D STEP, IGS, X_T exports and the result is identical.
Does anyone have any suggestions?
Hello
When programming your NC toolpath, you must have a smoothing or arc tolerance setting.
I think you have to look at Mastercam.
S.B
Thank you s.b,
We looked in Mastercam, there are indeed smoothing tolerances, we followed the recommendations of Mastercam to set it up but it doesn't change anything.
Hello
check that your Bow is not a Spline.
Pierre S,
Yes yes, I checked it
What is the radius of your bow?
Because on an R20 or an R200 a tolerance of 0.1mm for example, will make a completely different result.
When you select the CAM surface, Mastercam selects a portion of a cylinder or a dish?
S.B
It is a radius of 30.00 mm and the tolerance of Mastercam is %
When selecting in the CAM, Mastercam recognizes an arc.
Hard to say, but if he recognizes an arc, it's from Mastercam.
On this image, I see at least 3 tolerances:
https://www.emastercam.com/uploads/monthly_01_2014/post-42074-0-80013700-1390917838.jpg
After that, there is always the possibility that the postpro is not well optimized for the machine.
If the postpro generates G01s instead of G02 and G03, you must have segments.
S.B
s.b,
it is exactly this display.
Thank you for your answers, I'll see with the person who takes care of Mastercam if we can find something.
That's right, we have G01, X, Y and therefore segmets.
Then we changed machines, a 4-axis Siemens and a 5-axis Fanuc and the result is the same.
Whatever your machine, Siemens or fanuc, if your CAM generates the program in G01, you will have small facets.
The postpro needs to get out of the G02 G03.
It's even strange to use the same postpro for 2 different NCs.
Thank you s.b,
Mastercam will absolutely have to find a solution for us.
We did the test on both machines to see if Mastercam interpreted it in the same way.
After that, it's out of my skills;)