GSK GSK988TA, Manual

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Chapter 4 Tool Nose Radius Compensation
185
Ⅰ
Programming
Tool nose radius
center path
（
I,K
）
r
r
A S
N2
N1
G42
G4
0
B(X,Z)
N1 G42 mode tool nose center moves to A point
N2 G40 Xp__ Zp__ I__ K__ tool nose center moves to B point
Fig. 4-11 G40 execution process
Command explanation:
Table 4-1
Codes Function specifications Remark
G40
Cancel the tool nose radius compensation
G41
Tool nose radius left compensation is specified by G41 in rear tool post
coordinate system and tool nose radius right compensation is specified
by G41 in front tool post coordinate system
G42 Tool nose radius right compensation is specified by G42 in rear tool
post coordinate system and tool nose radius left compensation is
specified by G42 in front tool post coordinate system
Xp
X and its parallel axis
Yp
Y and its parallel axis
Zp
Z and its parallel axis
I
X and its parallel axis’ cancellation vector (radius value), their value
range are the same those of X
，
and their values are positive and their
directions are in X’s positive direction, their value are negative and
their directions are in X’s negative direction.
J
Y and its parallel axis’ cancellation vector (radius value), their value
range are the same those of Y
，
and their values are positive and their
directions are in Y’s positive direction, their value are negative and
their directions are in Y’s negative direction.
K
Z and its parallel axis’ cancellation vector (radius value), their value
range are the same those of Z
，
and their values are positive and their
directions are in Z’s positive direction, their value are negative and
their directions are in Z’s negative direction.
See
Fig.4-11,
Fig.4-12,
Fig.4-13
4.1.5 Compensation Direction
Specify its direction according to relative position between tool nose and workpiece when
executing tool nose radius compensation as Fig. 4-12 and Fig.4-13.