Fixed Cycles: Pocket Milling / Stud Milling / Slot Milling
5.7 CIRCULAR STUD (Cycle 257, DIN/ISO: G257)
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HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
Q203 Workpiece surface coordinate? (absolute):
Coordinate of the workpiece surface. Input range
-99999.9999 to 99999.9999
Q204 2nd set-up clearance? (incremental):
Coordinate in the spindle axis at which no collision
between tool and workpiece (fixtures) can occur.
Input range 0 to 99999.9999; alternatively PREDEF
Q370 Path overlap factor?: Q370 x tool radius
= stepover factor k. Input range: 0.1 to 1.414;
alternatively PREDEF
Q376 Starting angle?: Polar angle relative to the
stud center from which the tool approaches the
stud. Input range 0 to 359°
NC blocks
8 CYCL DEF 257 CIRCULAR STUD
Q223=60 ;FINISHED PART DIA.
Q222=60 ;WORKPIECE BLANK
DIA.
Q368=0.2 ;ALLOWANCE FOR SIDE
Q207=500 ;FEED RATE FOR
MILLNG
Q351=+1 ;CLIMB OR UP-CUT
Q201=-20 ;DEPTH
Q202=5 ;PLUNGING DEPTH
Q206=150 ;FEED RATE FOR
PLNGNG
Q200=2 ;SET-UP CLEARANCE
Q203=+0 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP
CLEARANCE
Q370=1 ;TOOL PATH OVERLAP
Q376=0 ;STARTING ANGLE
9 L X+50 Y+50 R0 FMAX M3 M99
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