Operation
Teach tool
in FDB
Burr / cutter
in FDB
Desired
contact point
on burr
Pointed
teaching tool
Burr
Workpiece
Program X,Y & Z offsets with robot
FDB Pointed Teaching Tool
Another programming method is to teach the path using the
centerline of the burr as a guide, following the edge of the part,
and then manually or automatically adding offsets to the robot
path to achieve the final correct burr path (see Figure). The
programming method used will depend on the machining center's
or robot’s capabilities and programmer preferences.
Inside corners represent a complex situation for compliant
deburring spindles. In general, the cutter must not be allowed to
simultaneously contact both perpendicular surfaces of an inside
corner. The resulting force imbalance in two planes will cause
severe tool chatter. The customer is advised to create a tool path,
which will prevent the cutter from simultaneously contacting two
perpendicular surfaces. A tapered cutter may reach further into
such an inside corner if the tool is presented in an inclined
orientation and closer to the tip of the tool. (Note: When working
near the tip of a tapered cutter the surface cutting speed is
reduced.)
When deburring inside radii, a similar situation may arise. The
customer is advised that no attempt should be made to deburr an
inside radius less than 1.5 times the diameter of the desired cutter
(Rmin = 1.5 x Cutter diameter). Depending on the depth of cut,
failing to follow these guidelines may result in excessive cutter
contact resulting in excessive tool chatter.
When running the program the first time, observe the path with
the radial compliance air supply turned down to approximately 1.4
bar (FBD-150) oe 0.35 bar (FDB-300/-340/-660/990/1040). When
the robot path speed is increased, it is important to notice that
robot may deviate from the programmed path. Verify that at
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04.00 | FDB | Assembly and Operating Manual | en | 389072
