Tolerance problem

[0610133]

Hello,

 

I’m having a problem with my tolerances in Mastercam X8 and X9.

I want to mill a workpiece in a clamping position where it contains contours with radii of 25000mm. The maximum arc radius, in the arc filter / tolerance tab in every toolpath operation, is set to a maximum of 15000,01mm. The result is a toolpath where a long radius is cut in many segments of several mm. You can see this with the backplot toolpath option (display endpoints button on), and will result in a bad finish on the machine.

 

Is there a way so that I can change this maximum value?

 

If not, is there a simple workaround for this problem? I know I can shorten the segments with smoothing turned on in the tolerance tab, but this doesn’t give me a good enough result on my machine.

[#Rekd™]

You can edit the tolerance setting in your control definition, be careful as your control on your machine may not process the code properly. I had this with small arcs on our Fanuc Oi_Mb. It looked great in Vericut but not so great when my machine gouged the part severely.

 

Set the min and max to your desired amounts.

 

[0610133]

changing the control definition (default 9999.999 mm) doesn't give me the ability to fill in a value larger than 15000 in the tolerance tab in a operations toolpath (for example surface finish contour). I think this is some sort of limit set in mastercam itself and not in the control or machine definition.

[#Rekd™]

Contact your reseller and see if they can help you further.

[?Mark]

Switching from Metric to Inch gives you less accuracy but higher range for max radius, which is what you're after. Something to consider.