
B-63944EN-1/02 PROGRAMMING 6.MEMORY OPERATION BY Series 15 FORMAT
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- Relationship between the sign of the taper amount and tool path
The signs of incremental dimensions for the cycle shown in Fig. 6.4.7
(q) are as follows:
Cutting end point in the direction of the length for U and W:
Minus (determined according to the directions of paths A-C and
C-D)
Taper amount (i):
Minus (determined according to the direction of path A-C)
Height of thread (k):
Plus (always specified with a plus sign)
Depth of cut in the first cut (∆d):
Plus (always specified with a plus sign)
The four patterns shown in the table below are considered
corresponding to the sign of each address. A female thread can also
be machined.
Outer diameter machining Internal diameter machining
1. U < 0, W < 0, i < 0 2. U > 0, W < 0, i > 0
X
Z
U/2
3(R)
4(R)
1(R)
2(F)
W
i
X/2
X
Z
U/2 3(R)
4(R)
1(R)
2(F)
W
i
X/2
3. U < 0, W < 0, i > 0
at |i|
≤|U/2|
4. U > 0, W < 0, i < 0
at |i|≤|U/2|
Z
U/2
3(R)
4(R)
1(R)
2(F)
W
i
X/2
X
Z
U/2
3(R)
4(R)
1(R)
2(F)
W
i
X/2
- Time constant and FL feedrate for threading
The time constant for acceleration/deceleration after interpolation for
threading specified in parameter No. 1626 and the FL feedrate
specified in parameter No. 1627 are used.