HEIDENHAIN TNC 620 User Manual page 170

5
Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling | CIRCULAR SLOT (Cycle 254, DIN/ISO: G254,
Q217 Center in 2nd axis? (absolute): Center
of the stud in the minor axis of the working
plane.
-99999.9999 to 99999.9999
Q376 Starting angle? (absolute): Enter the polar
angle of the starting point. Input range -360.000 to
360.000
Q248 Angular length? (incremental): Enter the
angular length of the slot. Input range 0 to 360.000
Q378 Intermediate stepping angle?
(incremental): Angle by which the entire slot is
rotated. The center of rotation is at the center of
the pitch circle. Input range -360.000 to 360.000
Q377 Number of repetitions?: Number of
machining operations on a pitch circle. Input range
1 to 99999
Q207 Feed rate for milling?: Traversing speed of
the tool in mm/min while milling. Input range 0 to
99999.999 alternatively FAUTO, fu, FZ
Q351 Direction? Climb=+1, Up-cut=-1: Type of
milling operation with M3:
+1 = Climb
–1 = Up-cut
PREDEF: The TNC uses the value from the
GLOBAL DEF block (if you enter 0, climb milling is
performed)
Q201 Depth? (incremental): Distance between
workpiece surface and bottom of slot. Input range
-99999.9999 to 99999.9999
Q202 Plunging depth? (incremental): Infeed per
cut; enter a value greater than 0. Input range 0 to
99999.9999
Q369 Finishing allowance for floor?
(incremental): Finishing allowance for the floor.
Input range 0 to 99999.9999
Q206 Feed rate for plunging?: Traversing speed
of the tool in mm/min while moving to depth.
Input range 0 to 99999.999, alternatively FAUTO,
FU, FZ
170
Only effective if Q367 = 0. Input range
NC blocks
8 CYCL DEF 254 CIRCULAR SLOT
Q215=0
Q219=12
Q368=0.2
Q375=80
Q367=0
Q216=+50
Q217=+50
Q376=+45
Q248=90
Q378=0
HEIDENHAIN | TNC 620 | User's manual for cycle programming | 10/2017
software option 19)
;MACHINING OPERATION
;SLOT WIDTH
;ALLOWANCE FOR SIDE
;PITCH CIRCLE DIAMETR
;REF. SLOT POSITION
;CENTER IN 1ST AXIS
;CENTER IN 2ND AXIS
;STARTING ANGLE
;ANGULAR LENGTH
;STEPPING ANGLE