Until/unless you can define the cam shape (lift versus angle of rotation), you'll NOT ever be able to copy/modify it decently.
THen you get into the issue of "bottom cutting" versus "edge cutting" cutters, cutter offsets and all sorts of other technicalities to properly and accurately cut a cam.
It can be done by cutting hundreds of "flats" but, you'll need to "map" the cam (existing versus desired) to do that.
Finally, if you read the cam with a "flat" as opposed to a "radius" bottom cutter, you'll get entirely different motion profiles from the same physical cam shape. THere are ways to get around that but it is not a technique I can teach/explain via a message board. |