
3. CREATING MACHINING PROGRAMS
FOR A LATHE HAVING THE Y–AXIS
MACHINING FUNCTION
B–62444E–1/04
TYPES OF MACHINING
PROGRAMS
448
Y
X
Chuck side
Note) This figure shows the axes of the
workpiece coordinate system.
Z
[HEAD1]
End lace of a
workpiece
In Y–axis milling (on the side face), an end mill cuts the side face of a
workpiece by moving only once along the contour determined by the
specified figure data. Specify a desired path along which the cutting tool
is to be moved. Machining in bites is not performed along the X–axis.
The figure above shows a workpiece viewed from the tool side. When a
machining program is created, however, the workpiece is viewed from the
front of the machine; therefore, in the figure above the face to be actually
machined is hidden from view.
To view the side face to be machined, the workpiece must be rotated about
the C–axis by 180 degrees. Consequently, the Y–axis of the actual
workpiece coordinate system is inverted, as shown below:
Workpiece coordinate systems for Y–axis machining on the side face
Y
Z
[HEAD2]
Y
Z
[HEAD1]
3.4
Y–AXIS MILLING
(ON THE SIDE FACE)