A planar toolpath produces evenly spaced cutting passes projected onto a 3D model.
Parallel finishing works well on flat or shallow surfaces, but it causes a problem with scallops when the surface no surface normal is close to that of the parallel intersecting planes.
ESPRIT’s Parallel Planes Finishing can improve machining on walls by applying a perpendicular toolpath to steep zones, rather than a parallel toolpath.
The Z-level toolpath produces a good finish on steep regions, as the tool moves progressively downward along the tool axis.
The Z-level toolpath works well on steep areas but it skips areas where the surface normal is close to that of the intersection planes.
An offset toolpath more closely matches the contours of the surfaces.
When working with differently shaped boundaries, ESPRIT adapts (or “morphs”) an offset toolpath to compensate for differing outer and inner boundaries.
Multiple toolpaths on a single solid model each use the same threshold angle of 60 degrees. Any angle less than 60 degrees is machined with offset toolpaths; any steeper angle is machined at the Z-level.
ESPRIT Global Finishing uses a single threshold angle to analyze the shape of complex surfaces to apply the most appropriate toolpath — intelligently — to machine an entire part.
The toolpath at the top of this model transitions almost imperceptibly from offset cutting passes to Z-level toolpath as the tool moves down the walls. The tool never leaves the surface.
Again, as the tool reaches a shallow zone, the toolpath transitions fluidly back to an offset toolpath without retracting the tool.
To achieve the same results with combination finishing requires the programmer to create multiple separate operations, which result in multiple repositioning moves of the tool.