HEIDENHAIN TNC 620 (340 56x-01) - Manual (Page 321)

HEIDENHAIN TNC 620 321
8.5 SL Cy
cles
 Milling depth Q1 (incremental value): Distance
between the cylindrical surface and the floor of the
contour. Enter the milling depth to be greater than the
tooth length LCUTS
 Finishing allowance for side Q3 (incremental
value): Finishing allowance on the ridge wall. The
finishing allowance increases the ridge width by
twice the entered value.
 Set-up clearance Q6 (incremental value): Distance
between the tool tip and the cylinder surface. The set-
up clearance entered must always be greater than the
tool radius.
 Plunging depth Q10 (incremental value): Dimension
by which the tool plunges in each infeed. Enter a
value less than the cylinder radius.
 Feed rate for plunging Q11: Traversing speed of the
tool in the spindle axis.
 Feed rate for milling Q12: Traversing speed of the
tool in the working plane.
 Cylinder radius Q16: Radius of the cylinder on which
the contour is to be machined.
 Dimension type ? (ANG/LIN) Q17: The dimensions for
the rotary axis (X coordinates) of the subprogram are
given either in degrees (0) or in mm/inches (1).
 Ridge width Q20: Width of the ridge to be machined.
Example: NC blocks
63 CYCL DEF 29 CYLINDER SURFACE RIDGE
Q1=-8 ;MILLING DEPTH
Q3=+0 ;ALLOWANCE FOR SIDE
Q6=+2 ;SET-UP CLEARANCE
Q10=+3 ;PLUNGING DEPTH
Q11=100 ;FEED RATE FOR PLUNGING
Q12=350 ;FEED RATE FOR MILLING
Q16=25 ;RADIUS
Q17=0 ;TYPE OF DIMENSION
Q20=12 ;RIDGE WIDTH