HEIDENHAIN TNC 320 User's Manual For Cycle Programming page 169

Q386 End point in 3rd axis? (absolute): Coordinate
in the spindle axis on which the surface is to be
face-milled. Input range -99999.9999 to 99999.9999
Q369 Finishing allowance for floor? (incremental):
Distance used for the last infeed. Input range 0 to
99999.9999
Q202 Plunging depth? (incremental): Infeed per
cut; enter a value greater than 0. Input range 0 to
99999.9999
Q370 Path overlap factor?: Maximum stepover
factor k. The TNC calculates the actual stepover
from the second side length (Q219) and the tool
radius so that a constant stepover is used for
machining. Input range: 0.1 bis 1.9999.
Q207 Feed rate for milling?: Traversing speed of
the tool in mm/min during milling. Input range 0 to
99999.999 alternatively FAUTO, FU, FZ
Q385 Finishing feed rate?: Traversing speed of the
tool in mm/min while milling the last infeed. Input
range 0 to 99999.9999, alternatively FAUTO, FU, FZ
Q253 Feed rate for pre-positioning?: Traversing
speed of the tool in mm/min when approaching
the starting position and when moving to the next
pass. If you are moving the tool transversely to
the material (Q389=1), the TNC moves the tool
at the feed rate for milling Q207 . Input range 0 to
99999.9999, alternatively FMAX, FAUTO
Q357 Safety clearance to the side? (incremental):
Safety clearance to the side of the workpiece
when the tool approaches the first plunging depth,
and distance at which the stepover occurs if the
machining strategy Q389=0 or Q389=2 is used.
Input range 0 to 99999.9999
Q200 Set-up clearance? (incremental): Distance
between tool tip and workpiece surface Input range
0 to 99999.9999; alternatively PREDEF
HEIDENHAIN | TNC 320 | User's manual for cycle programming | 9/2016
FACE MILLING (Cycle 233, DIN/ISO: G233)
NC blocks
8 CYCL DEF 233 FACE MILLING
Q215=0 ;MACHINING
OPERATION
Q389=2 ;MILLING STRATEGY
Q350=1 ;MILLING DIRECTION
Q218=120 ;FIRST SIDE LENGTH
Q219=80 ;2ND SIDE LENGTH
Q227=0 ;STARTNG PNT 3RD
AXIS
Q386=-6 ;END POINT 3RD AXIS
Q369=0.2 ;ALLOWANCE FOR
FLOOR
Q202=3 ;MAX. PLUNGING
DEPTH
Q370=1 ;TOOL PATH OVERLAP
Q207=500 ;FEED RATE FOR
MILLNG
Q385=500 ;FINISHING FEED RATE
Q253=750 ;F PRE-POSITIONING
Q357=2 ;CLEARANCE TO SIDE
Q200=2 ;SET-UP CLEARANCE
Q204=50 ;2ND SET-UP
CLEARANCE
Q347=0 ;1ST LIMIT
Q348=0 ;2ND LIMIT
Q349=0 ;3RD LIMIT
Q220=2 ;CORNER RADIUS
Q368=0 ;ALLOWANCE FOR SIDE
Q338=0 ;INFEED FOR FINISHING
9 L X+0 Y+0 R0 FMAX M3 M99
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