Cycle Parameters - HEIDENHAIN TNC 620 User Manual

Fixed Cycles: Contour Pocket | CONTOUR TRAIN DATA (Cycle 270, DIN/ISO: G270, software option 19)

Cycle parameters

Q390 Type of approach/departure?: 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
Q391 Radius comp. (0=R0/1=RL/2=RR)?:
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
Q392 App. radius/dep. radius?: Only in effect
if tangential approach on a circular path was
selected (Q390=1). Radius of the approach/
departure arc. Input range 0 to 99999.9999
Q393 Center angle?: Only in effect if tangential
approach on a circular path was selected
(Q390=1). Angular length of the approach arc.
Input range 0 to 99999.9999
Q394 Distance from aux. point?: Only in effect if
tangential approach on a straight line or right-angle
approach was selected (Q390=2 or Q390=3).
Distance to the auxiliary point from which the
TNC is to approach the contour. Input range 0 to
99999.9999
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
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
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