HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 206)

206 Fixed cycles: contour pocket, contour trains
7.
9 CONT
OUR TRAIN D
A
TA
(Cy
cle
270, DIN/ISO:
G270)
Cycle parameters
 Type of approach/departure
Q390: Definition of the
type of approach or departure.
 Q390 = 1:
Approach the contour tangentially on a circular arc.
 Q390 = 2:
Approach the contour tangentially on a straight line.
 Q390 = 3:
Approach the contour at a right angle.
 Radius compensation (0=R0/1=RL/2=RR)
Q391:
Definition of the radius compensation:
 Q391 = 0:
Machine the defined contour without radius
compensation.
 Q391 = 1:
Machine the defined contour with compensation to
the left.
 Q391 = 2:
Machine the defined contour with compensation to
the right.
 Approach/departure radius
Q392: Only in effect if
tangential approach on a circular path was selected.
Radius of the approach/departure arc. Input range 0 to
99999.9999
 Center angle
Q393: Only in effect if tangential
approach on a circular path was selected. Angular
length of the approach arc. Input range 0 to
99999.9999
 Distance to auxiliary point Q394: Only in effect if
tangential approach on a straight line or right-angle
approach was selected. Distance to the auxiliary point
from which the TNC is to approach the contour. Input
range 0 to 99999.9999
Example: NC blocks
62 CYCL DEF 270 CONTOUR TRAIN DATA
Q390=1 ;TYPE OF APPROACH
Q391=1 ;RADIUS COMPENSATION
Q392=3 ;RADIUS
Q393=+45 ;CENTER ANGLE
Q394=+2 ;DISTANCE