Yes, Mastercam has high speed loops as a type of cutting path. I'm a nOOb when it comes to this stuff but these are the advantages as
I understand them:
- The cutter engagement is more constant than more traditional cutter paths. There are no 'corners' where the cutter goes from 45 degrees of engagement to 135 degrees of engagement. If you think about the cutter's flex, suddenly hitting a 90 degree corner in a pocket will cause the load to go wayyyy up. That's going to twist and distort the endmill. At a bare minimum, that could create coining marks in the corner transitions. At worst, it could snap a cutter.
- You generally have to program your pockets around the peak loads that the cutter experiences in the corners. Since there are no longer 'corners' in your path, you can program closer to the limits of the cutter (depth & radial engagement). That means more efficient material removal (if you apply it properly).
- The machine isn't making any sudden axis changes. Because the movements are circular, the table isn't making sudden starts & stops at the end of linear pocket moves. The also helps to reduce coining marks on the part (caused by the machine bouncing slightly when the table has to come to a screeching halt at the end of a pass).
OK, that's my nOOb opinion on the matter. Is this more of a general machining question or are you shopping for Mastercam?