9. Functions to Simplify Programming
112
9.2.4
9.2.4
9.2.4
9.2.4 Multiple
Multiple
Multiple
Multiple Thread
Thread
Thread
Thread Cutting
Cutting
Cutting
Cutting Cycle
Cycle
Cycle
Cycle (G76)
(G76)
(G76)
(G76)
Programming
Programming
Programming
Programming
G76 C(c) R(r) E(e) A(a) X(U) Z(W) I(i) K(k) U(d) V(
Δ
dmin) Q(
Δ
d) P(p) F(L)
Explanation
Explanation
Explanation
Explanation of
of
of
of the
the
the
the parameters
parameters
parameters
parameters
C(c)
Repetitive count in finishing (1~99)
R(r)
Retraction amount on Z axis (00~99)
E(e)
Retraction amount on X axis (00~99)
A(a)
Angle of tool tip (two-digit number). It could be 80°, 60°, 55°, 30°, 29°, or 0°.
X, Z
Coordinate value of end point (point C) in absolute command.
U, W
Coordinate value of end point (point C) with reference to the initial point
(point A) in incremental command
I(i)
Difference of thread radius. If i=0, it is straight thread cutting.
K(k)
Height of thread. This value is specified by the radius value on X axis.
U(d)
The finishing allowance (radius designation).
V(
Δ
dmin)
The minimum cutting depth (radius designation). The cutting depth is
Δ
dmin
when the cutting depth (
∆
∆
d n
d n
−
−
1
) is less than
Δ
dmin.
Q(
Δ
d)
Depth of cutting at the first cut (radius designation)
P(p)
Start point offset.
F(L)
Thread lead
d
B
C
(R)
i
e
u/2
A
D
K
(R)
(F)
(R)
+
+
+
+Z
Z
Z
Z
w
r
+
+
+
+X
X
X
X
z
x/2
Figure 9.28 Multiple Thread Cutting Cycle (G76)
Содержание HNC-18iT
Страница 27: ...2 Preparatory Function 23 G59...
