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GSK980TDi Turning CNC System User Manual
136
Ⅰ
Programming
3.23.2 Rigid Thread Cutting G32.1
Command format
：
G32.1 X(U)__ Z(W)__ C(H)__F(I)__ S__
；
Command function
：
The traditional thread interpolation calculates the current distance of the
movement of the feed axis based on the feedback pulse count of the position encoder
installed on the spindle, which can realize the feed axis to follow the thread
interpolation mode of the spindle. Its disadvantages are that there is a big error in the
thread lead in acceleration/deceleration. In the rigid thread interpolation mode, the
working of the spindle motor is the same that of the servo motor, and the
interpolations between the feed axis and the spindle execute the thread interpolation
to get the thread with high precision.
Command explanation:
G32.1
：
Rigid thread interpolation command;
C
：
Start angle of thread interpolation;
（
X,Z
）
：
End point coordinates of thread interpolation;
F
（
I
）
：
Thread lead, F
（
I
）
> 0 right-hand thread, F
（
I
）
< 0 left-hand thread
；
J: Movement in the short axis in thread run-out, its range:
（
-99999999~99999999
）
× least input
increment with negative sign; If the short axis is X, its value is specified with the radius; J value
is the modal parameter.
K: Length in the long axis in thread run-out, its range: 0~99999999× least input increment. If the
long axis is X, its value is in radius without direction; K is modal parameter.
S
：
spindle speed
；
Explanations
：
1) G32.1 is in Group 01;
2) When there is the C movement command in a block, the spindle firstly positions the
start point of C axis before turning the thread;
3) Start points of X, Z, C axis must be the same one in the repetitive machining;
4) G32.1 cannot specify the thread run-out, and the feed axis and the spindle stops
simultaneously at the end point of the thread;
5) The input range of the programmed address value in G32.1 is the same that of the
general thread turning command
（
G32
）
;
6) When G32.1 is executed, the pause signal is disabled temporarily and the spindle
override is fixed to be 100%.
Command path is shown below:
