High Speed Machining
Airbus/Univ. Bordeaux, Sandvik Coromant, and STEP Tools
demonstrated the use of High Speed of nominal machining process plans
with STEP-NC and validated improved approaches for representing large
volumes of toolpath curves.
The original toolpath curves used a STEP trimmed_curve based on an
underlying circle representation. While this works fine, a new
representation for arcs and helix curves using via points within a
polyline was tested and resulted in a 50% reduction in data volume,
making the AP238 file with full toolpath, part geometry, stock
geometry, and tolerance information smaller than the
originating CAM file and roughly the size of an equivalent
toolpath-only Heidenhain G-code file. The specifics are described in
the presentation below.