GSK GSK988TA, Manual

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GSK988TA/GSK988TA1/GSK988TB Turning Center CNC System User Manual 【 Programming & Operation 】
102
Ⅰ
Programming
Fig. 2-57
Program
：
O0009
；
G00 X30.14 Z3
； （
the first cut-in 1mm
）
G32 X51.57 W-75 F2.0
； （
the first taper cutting
）
G00 X55
； （
First taper cutting
）
W75
； （
Z returns to the start point
）
X29.14
； （
the second tool infeed 0.5mm
）
G32 X50.57 W-75 F2.0
； （
the second taper thread cutting
）
G00 X55
； （
Tool retraction
）
W75
； （
Z returns to the start point
）
M30
；
2.20.2 Thread Cutting with Variable Lead G34
Command function: G34 can machine the metric, inch straight, tater thread with variable pitch
and end thread.
Command format: G34 IP__ F__ J__ K__ R__ Q__
；
Code specifications: G34 is modal;
IP_, J_, K_, Q_ Meaning and value range are the same those of G32
F
It is the first thread pitch from start point, and its range is the
same that of G32
R
Incremental value or decremental value of spindle per pitch,
R=F2-F1, R is with a direction; F1>F2, the pitch decreases when
R is negative; F1<F2, the pitch increases when R is positive; R
range: ±0.01 inch/pitch~ ±499.99 mm/pitch(metric thread);
±0.0001 inch/pitch~ ±9.9899 inch/pitch
（
inch thread
）；
An alarm occurs when R value exceeds the above range and the
pitch exceeds the permissive range because of R
increment/decrement or the pitch is negative.
Command path: