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4 The Interpolation
28
Fig. 4.4-1
Fig. 4.4-2
The feed specified at address F is effective
along the circle path. Feed component Fq along
axis q is obtained from the relationship
where
L
q
: displacement along axis q,
L
arc
: length of circular arc,
F: programmed feed,
F
q
: feed along axis q.
For example:
G17 G03 X0 Y100 Z20 R100 F150
The series of instructions
define a multi-dimensional spatial helical interpolation in which q, r, s are optional axes not involved
in the circle interpolation.
For example, series of instructions
G17 G3 X0 Y-100 Z50 V20 I-100
will move the tool along the superficies of an
oblique cylinder if V is an axis parallel to Y.
L Notes:
– Whenever parameter HELICALF in the field
of parameters is set to 1, the control will
implement the programmed feed along
the spatial path.
– In the case of the circle specified in the
selected plane having a varying radius,
the interpolation will be carried out
along the superficies of the specified
cone.