GSK GSK988TA, Manual

Page: 91 / 531

Chapter 2 G Commands
73
Ⅰ
Programming
Program
:
G00 X130 Z5 M3 S500;
G94 X0 Z0 F200;
X120 Z-110 F300; End face cutting （ cut outer Φ 120 ）
G00 X120 Z0;
G94 X108 Z-30 R-10;
X96 R-20;
X84 R-30; （ C → B → A ， Φ 60 cut ）
X72 R-40;
X60 R-50;
M30;
Note 1: The fixed cycle code is used to only ZX plane. An alarm occurs when other axis’ motion in the
fixed cycle code’s blocks is executed;
Note 2: After X(U) , Z(W) , R are executed in the canned cycle code, their code values are value if X(U) ,
Z(W) ,R are not redefined by executing a new canned cycle codes. The code values of X(U) , Z(W) ,
R are cleared if non-modal G code (Group 00) or other G codes in Group 01 except for G04 is
executed;
Note 3: In MDI mode, a fixed cycle which is the same with the previous canned cycle can be executed
without inputting the code again after the run is completed;
Note 4: The previous cycle operation of the fixed cycle is executed repetitively when the next block
immediately follows EOB (;) or there is a null line in G90
～
G94, but when the following block
immediately follows M, S, T code, the system does not repetitively execute the previous cycle
operation.
Example: …
N010 G90 X20.0 Z10.0 F400 ；
N011
；（
here, execute G90 one time again
）
…
Note 5: The single block is executed in G90, G94, the single block stops after the whole cycle of the
current block is completed.
2.19 Multiple Cycle Codes
GSK988TA/TB multiple cycle codes include axial roughing cycle G71, radial roughing cycle G72,
closed cutting cycle G73, finishing cycle G70, axial grooving multiple cycle G74, axial grooving
multiple cycle G75 and multiple thread cutting cycle G76. When the system executes these codes, it
automatically counts the cutting times and the cutting path according to the programmed path, travels
of tool infeed and tool retraction, executes multiple machining cycle(tool infeed
→ cutting → retract
tool → tool infeed), automatically completes the roughing, finishing workpiece and the start point and
the end point of code are the same one.
Note: G76 multiple thread cutting cycle code is described in
Thread Function
.
2.19.1 Axial Roughing Cycle G71
G71 roughing cycle type is divided into two: type and type . X, Z in type must monotonely
Ⅰ Ⅱ Ⅰ
increase or decrease; in type , X can be non
Ⅱ
-monotone and Z must monotonely increase or