
PROGRAMMING
B–61404E/08
9. SPINDLE SPEED FUNCTION
(S FUNCTION)
102
Specify the surface speed (relative speed between the tool and workpiece)
following S. The spindle is rotated so that the surface speed is constant
regardless of the position of the tool.
G96 Pα Sfffff ;
↑Surface speed (m/min or feet/min)
Note : This surface speed unit may change according to
machine tool builder’s specification.
If a surface speed is omitted, the S value specified
in the previous G96 is used.
P0 : Axis set in the parameter (No. 041#4, #5)
P1 : X axis, P2 : Y axis, P3 : Z axis, P4 : 4th axis
G97 Sfffff ;
↑Spindle speed (rpm)
Note : This surface speed unit may change according to
machine tool builder’s specification.
If a spindle speed is omitted, the last speed specified in
G96 remains valid.
G92 Sfffff ;
↑Maximum spindle speed (rpm) used during constant
surface speed control
Note : The measurement unit of this maximum spindle speed
may vary from one machine builder to another.
9.3
CONSTANT
SURFACE SPEED
CONTROL (G96, G97)
Format
D Constant surface speed
control command
D Constant surface speed
control cancel command
D Clamp of maximum
spindle speed