GSK 980TDi, Руководство пользователя

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GSK980TDi Turning CNC System User Manual
58
Ⅰ
Programming
post coordinate system) arc from starting point to end point as Fig. 3-5.
G03 movement path is counterclockwise (rear tool post coordinate system/clockwise (front tool
post coordinate system) arc from starting point to end point as Fig. 3-6.
Command path:
U/2
X
Z axis
X axis
A
B
Z
W
I
K
R
G03 path
A:Start point of arc
B:End point of arc
Fig. 3-5 G02 path Fig.3-6 G03 path
Command specification:
G02, G03 are modal,
R is arc radius, range: ±99999999× least input increment;
I: X difference value between circle center and starting point of arc in radius;
K: Z difference value between circle center and starting point of arc;
Center point of arc is specified by address I, K which separately corresponds to X, Z, I, K expresses
the vector (it is the increment value) from starting point to center point of arc as the following figure;
I=Coordinates of center point-that of starting point in X direction; K= Coordinates of center
point-that of starting point in Z direction;
I, K are with sign symbol. When directions of I, K are the same as those of X, Z, they are positive,
otherwise, they are negative.
X, U, Z, W, R, I, K range is referred to Table 1-2 of Section 1.4.1, unit: mm/inch.
Fig. 3-7
Arc direction: G02/G03 direction (clockwise/counterclockwise) is opposite on the front tool post
coordinate system and the rear one as Fig.3-8: