13. Program Support Functions
13.24 Tool Center Point Control; G43.4/G43.5
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13.24 Tool Center Point Control; G43.4/G43.5
Function and purpose
The tool center point control function controls a commanded position described in the machining
program to be the tool center point in the coordinate system that rotates together with a
workpiece (table coordinate system). This function can be applied for 5-axis machining, including
a tool tilt type (Fig. 1 (a)) with two rotary axes set on the head, table tilt type (Fig. 1 (b)) with two
rotary axes set on the table, or combined type (Fig. 1 (c)) with a rotary axis set on each tool and
table.
With this function, in the case of using tool tilt type, the tool center point is controlled so that it
moves on the programmed path specified on the workpiece coordinate system. In the case of
using the table tilt type, the tool center point is controlled so that it moves on the programmed path
specified on the table coordinate system (a coordinate system which rotates together with a
workpiece).
Tool center point control OFF and
tool length compensation along the tool axis ON
Tool center point control ON
Rotation center
Rotation center
Path of the tool
center point
Controls so that the path of the tool
holder center point draws a straight line.
Controls so that the path of the tool
center point draws a straight line.
<Tool tilt type>
Fig.1(a)
<Table tilt type>
Traces of the tool
center point
Z(+)
X(+)
B(-)
Rotation
center
Controls so that the tool holder
center point positions on the
workpiece coordinate system.
Controls so that the tool center
point positions on the table
coordinate system.
Fig.1(b)
B(-)
Z(+)
X(+)
X'(+)
Z''(+)
X''(+)
Tool center point control OFF and
tool length compensation along the tool axis ON
Tool center point control ON
Rotation
center