Yaskawa YASNAC PC NC Programming Manual - Manual (Page 184)

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YASNAC PCNC Programming Manual Chapter 4: Enhanced Level Commands
(a) Addresses
Basically, the same addresses as used in the G84/G74 solid tapping cycle are used in the G
184/G 174 deep-hole solid tapping operation in the same format. The addresses that are
used specially for the deep-hole solid tapping are indicated below.
Table 4.1.4.2 Addresses Used for Deep-hole Solid Tapping
Note 1.: An E command specified in a canned cycle is usually treated as the command for E feed (mm/
min, inch/min). However, if an E command is specified in the G184/G174mode, it is treated as the
feedrate multiplying command and, therefore, the unit of command differs from the unit applied to
normal E commands.
2: Although the E command is modal if it is used in a canned cycle, the modal value before the
change of a G code becomes invalid if a G code of 09 group is changed to G184/G174 from a G
code other than these.
3: With the G174 command, the same tapping operation is executed as with the cycle called by
the G184 command with the exceptions that the tapping is carried out in the reverse rotation or the
spindle and that the spindle rotates in the forward direction for tap retraction operation.
Address Description Unit Programmable Range
Q
Used to specify the depth of feed for each
infeed cycle in an unsigned incremental val-
ues, 1 = 0.001 mm
0.0001 inch 0.001 to 999999.999 mm
I
Used to specify the depth of feed for the first
infeed cycle in an unsigned incremental
value. 1 = 0,001 mm
0,0001 inch 0.001 to 999999.999 mm,
0.0001 to 99999.9999 mm
J
Used to specify increment/decrement
amount of depth of feed in an unsigned
incremental value. 1 = 0,001 mm
0,000 inch 0.001 to 999999.999 mm,
0.0001 to 99999.9999 inch
K
Used to specify the depth of feed for the last
infeed cycle in an unsigned incremental
value.
When “I -(n - 1) x J < K”, the value speci-
fied for K is taken as the depth of feed. 1 = 0,001 mm
0,0001 inch 0.001 to 999999.999 mm,
0.0001 to 99999.9999 inch
E
Used to specify the feedrate multiplication
ratio to be applied when moving up the Z-
axis (retraction operation). If no E com-
mand is specified, the value set for pm1252 1 = 0.1
(Note)1, 2
0.1 to 25.5
C
Used to specify the levels (tool retraction
start levels) where the tool is retracted to the
R-point level in an unsigned incremental
value. These levels (C-point levels) are set
in intervals of the value set for address C
starting from the R-point level in the direc-
tion to the Z-point level. 1 = 0.001 mm,
0.0001 inch 0.001 to 999999.999 mm,
0.0001 t0 99999.9999 inch
δ
Used to specify the chamfering amount for
G184/G174 cycle by parameter pm0873.
Note that the value must always be input in
“mm” even if the tapping cycle is pro-
grammed in the inch mode. 1 =0.001 mm
(Note)3
0 to 999999999