HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 353)

HEIDENHAIN TNC 640 353
13.22 L
ONGITUDINAL THREAD (Cy
c
le 831)
Cycle parameters
U Thread position Q471: Define the position of the
thread:
0: External thread
1: Internal thread
U Set-up clearance Q460: Set-up clearance in radial and
axial direction. In axial direction, the set-up clearance
is used for acceleration (approach path) to the
synchronized feed rate.
U Thread diameter Q460: Define the diameter of the
thread. For external threads (Q471==0), state the
nominal diameter. For internal threads (Q471==1),
state the core diameter.
U Thread pitch Q472: Pitch of the thread.
U Thread depth Q473: Depth of the thread relative to the
radius. If you enter 0, the depth is assumed for a
metric thread based on the pitch.
U Contour start in Z Q492: Z coordinate of the starting
point
U Contour end in Z Q494: Z coordinate of the end point
including the runout of the thread Q474.
U Runout of thread Q474: Length of the path on which,
at the end of the thread, the tool is lifted from the
current plunging depth to the thread diameter Q460.
U Maximum cutting depth Q453: Maximum plunging
depth in radial direction relative to the radius.
U Angle of infeed Q467: Angle for the infeed Q453. The
reference angle is formed by the perpendicular to the
rotary axis.