[Javy]

Hello,
How do I program a spherical radius on FADAL using Mastercam 9.1 ?
1.654 R x .3 deep (concave/bowl) ?
thanks

[Andre' B]

I started with X2 so no experiance with version 9 but.

Since you are asking I will assume you do not have the 3D surfacing paths available.

You can always do this kind of thing with the 2D sweep path.
Pick the radial arc as the across contour and the full circle for the along contour to get what i have in the pic.
You will likly have to ajust the left/right settings on the across and along computer comp in the parameters for the path, it can make some strange stuff.

[Neal]

Javy--
If you are looking to use G3/G2 with the I,J, and K center description I have bad news for you. The Fadal control can not process a spherical arc. The G3/G2 arcs in the Fadal control must fall ON X, Y, or Z axes and use only two descriptors for the arc center. Spherical arc require three arc center descriptors.
You will need to do a spline point style of arc. The easiest way would be to create a spherical surface and then select the surface machining function in your cad cam. The post will produce the code in G1 for that surface.

Neal

[Javy]

THANK YOU

[kappullen]

Jay,
You can create a segment of the arc required in xz, or yz, and rotate the arc
around the centerline to create a spherical surface.
Then surface the surface.
Kap

[Neal]

Kap/Jay--
Be aware that you CANNOT rotate the G3/G2 arc in the Fadal control using the G68 rotation code. The rotation will need to be done in a CAD/CAM system.

Neal

[kappullen]

Neal,
I am talking about generating a program in Mastercam, not in the Fadal control it's self.
I've made many a ball mold this way.
Kap

[Neal]

Kap--
Sorry, I misunderstood. That is the only way it can be done.

Neal

[Andre' B]

Kap--
Sorry, I misunderstood. That is the only way it can be done.

Neal

Well now that is not completely true.
If the control has the macro B option a spherical surface is not that difficult to program. In fact it would be a surprisingly short program and could easily be parametric then the operator can change size.

Efficient roughing is more of a problem.

[Kiwi]

Here is a VB program which may help. I know it's not MC but I can't help there.

[Neal]

Andre--
This is a Fadal control not a Fanuc control. Fadal does not recognize Macro B.


Neal