Download User Guide - HSM Performance Pack for Mastercam

Mastercam HSM Performance Pack User Guide
13
Scallop finishing
Sometimes
called
constant
stepover passes. The first pass
follows the boundary in the plane
projected onto the surface. Each
subsequent pass is offset inwards
along the surface to remain at a
constant distance. The passes will
follow up- and down-sloped and
vertical walls to maintain this
distance.
This operation will also give you
rest area machining if you enable the previous tool parameters.
Pencil machining
The defining parameter for this
operation is the bitangency angle.
The system will run the cutter
along all the paths where it would
be making two simultaneous
contacts with the part with more
than this angle in difference.
The overthickness enables you to
detect a set of pencil passes for a
cutter larger than the one you
specify, and project the passes
into the surface. This makes it possible to find paths along a corner fillet
where the radius is slightly greater than the cutter radius.
If you specify a number of offsets greater than zero, you will get passes
on either side of each pencil pass (next page to the left), or you can set
unlimited offsets for machining the entire surface (nest page to the right).