GSK GSK980TDc, Manual

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GSK980TDc Turning CNC System User Manual
98
Ⅰ
Progra
mming
blocks repetitively;
● ns ～ nf blocks are used for counting the roughing path and the blocks are not executed when
G71 is executed. F, S, T commands of ns
～
nf blocks are invalid when G71 is executed, at the
moment, F, S, T commands of G71 blocks are valid. F, S, T of ns ～ nf blocks are valid when
executing ns
～
nf to command G70 finishing cycle;
● In ns ～ nf blocks, there are only G commands: G00, G01, G02, G03, G04, G05, G6.2, G6.3,
G7.2, G7.3, G96, G97, G98, G99, G40, G41, G42 and the system cannot call subprograms
(M98/M99);
●
G96, G97, G98, G99, G40, G41, G42 are invalid when G71 is executed, and are valid when
G70 is executed;
●
When G71 is executed, the system can stop the automatic run and manual traverse, but
return to the position before manual traversing when G71 is executed again, otherwise, the
following path will be wrong;
●
When the system is executing the feed hold or single block, the program pauses after the
system has executed end point of current path;
● d
△
, u are specified by the same U and different with or without being specified P, Q
△
commands;
●
G71 cannot be executed in MDI, otherwise, the system alarms;
●
There are no the same block number in ns~nf when compound cycle commands are
executed repetitively in one program;
●
The tool retraction point should be high or low as possible to avoid crashing the workpiece.
Example
：
Fig. 3-73
（
Type I
）
Fig. 3-27
Program: O0004;
G00 X200 Z10 M3 S800; (Spindle clockwise with 800 r/min)
G71 U2 R1 F200; (Cutting depth each time 4mm, tool retraction 2mm [in
diameter])
G71 P80 Q120 U0.5 W0.2; (roughing a---e, machining allowance: X, 1mm;Z, 2mm)