
B-63783EN-1/01 10.TOOL FUNCTION
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10.4.8 Three-dimensional Cutter Compensation
General
The three-dimensional cutter compensation function is used with
machines that can control the direction of tool axis movement by using
rotation axes (such as the B- and C-axes). This function performs
cutter compensation by calculating a tool vector from the positions of
the rotation axes, then calculating a compensation vector in a plane
(compensation plane) that is perpendicular to the tool vector.
There are two types of cutter compensation: Tool side compensation
and leading edge compensation. Which is used depends on the type of
machining.
- Tool Side Compensation
Tool side compensation is a type of cutter compensation that performs
three-dimensional compensation on a plane (compensation plane)
perpendicular to a tool direction vector.
Compensation
plane
Y
Z
X
Tool vector
Cutte
compensation amount
Programmed tool path
(before compensation)
Cutter compensation
vector
Tool center
path(after
compensation)
Fig.10.4.8 (a) Tool side compensation
- Leading Edge Offset
Leading edge offset is a type of cutter compensation that is used when a
workpiece is machined with the edge of a tool. A tool is automatically
shifted by a specified cutter compensation value on the line where a
plane formed by a tool direction vector and tool movement direction
intersects a plane perpendicular to the tool axis direction.
Tool used
Reference
tool
Cutter compensation
vector
Cutter compensation
amount
Tool center path
(after
compensation)
Programmed
tool path
Tool vector
Fig. 10.4.8 (b) Reading edge offset