Question: Is VoluMill a type of trochoidal toolpath?
Not at all. So-called trochoidal toolpaths employ a looping motion in an attempt to avoid burying the cutting tool. VoluMill toolpaths, on the other hand, are designed so that the tool will never be buried, thus eliminating the need for the toolpath-lengthening circular motion; a VoluMill toolpath is therefore significantly shorter than a trochoidal toolpath for the same geometry, resulting in shorter cycle times. In addition, since the load on the tool is precisely controlled with a VoluMill toolpath, more aggressive machining parameters can be safely used than with a trochoidal toolpath. The net result is that a VoluMill toolpath is significantly more productive than a trochoidal toolpath, while at the same time putting less stress on the cutting tool, thereby extending tool life as well as reducing cycle times.