Contour Train Data (Cycle 270, Din/Iso: G270); Please Note While Programming; Cycle Parameters - HEIDENHAIN TNC 640 User Manual

7
7.11 CONTOUR TRAIN DATA (Cycle 270, DIN/
ISO: G270)

Please note while programming:

You can use this cycle to specify various properties of Cycle 25
CONTOUR TRAIN.
Cycle 270 is DEF active, which means that it becomes
effective as soon as it is defined in the part program.
If Cycle 270 is used, do not define any radius
compensation in the contour subprogram.
Define Cycle 270 before Cycle 25.

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
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Fixed Cycles: Contour Pocket | CONTOUR TRAIN DATA (Cycle 270, DIN/ISO: G270)
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
HEIDENHAIN | User's manual for cycle programming | 10/2017