GSK GSK988TA, Руководство пользователя

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Chapter 2 G Commands
101
Ⅰ
Programming
Fig.2-56 long axis, short axis
Note 1: When the thread run-out, the short axis executes the thread run-out at the speed of No. 1466
value, and the long does at the current thread cutting speed.
Note 2: J, K are modal. J, K mode is cancelled when the system executes the non thread cutting code; it
cannot code J, K value in the 1st block and the middle block when the system continuously
executes the thread cutting, but it can specify J0 K0, otherwise, it considers the non continuous
thread machining is done. The thread run-out is done when J, K value is executed in the last
thread cutting;
Note 3: There is no thread run-out when J, or J, K is omitted;
Note 4: When only K is omitted, the long axis does not execute thread run-out, but the short axis
executes thread run-out with J value;
Note 5: There is no thread run-out when J=0;
Note 6:J
≠ 0, the long axis without thread run-out and the short axis with J value thread run-out: in the
course of thread run, after the tool cuts to the thread’s end point at the thread feedrate, it retracts
vertically along the short axis (the thread run-out speed of short axis is performed when No.466 is
set to 0 ) ; to avoid of appearing a groove, No.1466 thread run-out speed should be increased
properly, and No.1628’s acceleration/deceleration time constant of thread run-out should be
decreased properly;
Note 7: If the current block is for thread and the next block is the same, the system does not test the
spindle encoder signal per rotation at starting the next block to execute the direct thread cutting,
which function can realize continuous thread machining;
Note 8: The feed hold operation is executed during the thread cutting, and the system displays “Run”
and the thread cutting does not stop till the current block is executed. When the thread cutting
block is executed in continuous thread machining, the program run pauses after the thread cutting
blocks are executed completely;
Note 9: In Single block, the program stops run after the current block is executed. The program stops run
after all blocks for continuous thread cutting are executed;
Note 10: The thread cutting decelerates to stop when the system resets, emergently stop or its driver
alarms;
Note 11: An alarm occurs when the thread run-out length is more than the thread machined length of the
long axis.
Note 12: In G32, the basic axis code cannot be in the same block with its parallel axis code, otherwise,
the system alarms.
Note 13: When machining the thread in the metric tool machine in the unit of tooth/inch, using the
expression calculated value programs F code. For example, when the thread with 10 teeth/inch is
machined, using F[25.4/10] programs.
Note 14: The system automatically checks the spindle speed before machining the thread, the system
alarms when the spindle speed is not executed. The spindle speed cannot be checked in the
course of the machining.
Example: Pitch: 2mm. δ 1 = 3mm, δ 2 = 2mm, total cutting depth 2mm with two times cut-in.