GSK 988T, User Manual

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GSK988T Turning CNC System User Manual
60
Ⅰ
Programming
the next block, the programmed contour in G64 is different from the actual,
and the difference condition is determined by F value and the angle between
two paths, the more the different is, the more F value is.
Command format
：
G61;
（
exact stop mode
）
G64;
（
cutting mode
）
Command explanations:
1. A block including G61 eactaly stops the end point of the program before the system
executes the next block, which is used to process sharpt edges and corners. G61 is
modal and valid till G64 is commanded. The programmed contour is the same that of the
actual.
2. G64 is modal, valid and default before G61 is commanded. G64 path is different from that
of G61 as Fig. 2-27;
3. G61, G64 belong to Group 15, and their relations with other G groups are referred to
Group 5.
4. When G01 is executed, it is in the exact stop in cutting mode because it is non cutting
command.
5. When G61/G64 is specified, it is value in the next commanded block.
Fig. 2-27
Note: The system defaults G64 cutting mode.
2.14 Fixed Cycle Command
To simplify programming, the system defines G command of single machining cycle with one
block to complete the rapid traverse to position, linear/thread cutting and rapid traverse to return to
the starting point:
G90: axial cutting cycle; G92: thread cutting cycle; G94: radial cutting cycle;
G92 thread cutting fixed cycle command is described in
Thread Function .
2.14.1 Axial cutting cycle G90
Command function: From starting point, the cutting cycle of cylindrical surface or taper
Z
X
0
Tangential point
Tangential point
Tool path when specifying exact stop
Tool path in cutting mode