OPTIMUM
M A S C H I N E N - G E R M A N Y
808D
Page 384
Operating and Programming — Milling
ISO Mode
Brief instruction 808D Milling
Basic Theory
Frequently used letter meanings of typical fixed cycle codes in ISO mode.
P.
Descriptions
Unit
Applied range and note
X/Y
Cutting end point X/Z absolute
coordinate values
G73 / G74 / G76 G81 ~
G87 / G89
Z
The distance incremental value
between R point and the bottom of the
hole, or the absolute coordinate value
of the bottom of the hole
G73 / G74 / G76 G81 ~
G87 / G89
R
The distance incremental value
between the start point plane and R
point or the absolute coordinate value
of R point
G73 / G74 / G76 G81 ~
G87 / G89
Q
The depth of every cut
(
incremental value
)
G73 / G83
Offset value
(
incremental value
)
G76 / G87
P
The delay time at the bottom of the
hole
ms
G74 / G76 / G89 G81 ~
G87
F
The feedrate of the cutting
mm/min
G73 / G74 / G76 G81 ~
G87 / G89
K
The repeat times of the fixed cycle
G73 / G74 / G76 G81 ~
G87 / G89
In 808D, the default ISO program feed distance unit is mm!
(X100
→
100mm)
Note: change the parameter 10884 = 0, to make X100
→
100 um / X100.
→
100 mm
Brief introduction of typical fixed cycle codes in ISO mode.
G73
fast-speed deep hole drilling
Common programming structures:
G73 X—Y—Z—R—Q—F—K
Motion process:
①
Drilling motion (-Z)
→
intermediate
feed
②
Motion at the bottom of the hole
→
none
③
Retraction motion (+Z)
→
fast feed
G73
application example program:
M3 S1500
;spindle rotation
G90 G99
G73 X0 Y0 Z-15 R-10 Q5 F120
;after orientation drill 1st hole, back to R point
Y-50
;after orientation drill 2nd hole, back to R point
Y-80
;after orientation drill 3rd hole, back to R point
X10
;after orientation drill 4th hole, back to R point
Y10
;after orientation drill 5th hole, back to R point
G98 Y75
;after orientation drill 6th hole, back to R point
G80
;cancel fixed cycle
G28 G91 X0 Y0 Z0
;back to reference point
M5
;spindle rotation stop
M30
For the meaning of letters when programming typical fixed cycles,
please refer the figure on the left!
G74
reverse tapping cycle
Common programming structures:
G74 X—Y—Z—R—P—F—K
Motion process:
①
Drilling motion(-Z)
→
cutting feed
②
Motion at the bottom of the hole
→
spindle rotation in positive direction
③
Retraction Z)
→
cutting feed
G74
application example program:
M4 S100
;spindle rotation
G90 G99
G74 X300 Y-250 Z-150 R-120 P300 F120
;after orientation drill 1st hole, back to R point
Y-550
;after orientation drill 2nd hole, back to R point
Y-750
;after orientation drill 3rd hole, back to R point
X1000
;after orientation drill 4th hole, back to R point
Y-
550
;after orientation drill 5th hole, back to R point
G98
Y750
;after orientation drill 6th hole, back to R point
G80
;cancel fixed cycle
G28 G91 X0 Y0 Z0
;back to reference point
M5
;spindle rotation stop
M30