HEIDENHAIN TNC 426 (280 476) Pilot - Manual (Page 68)

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SL
Cycles
CONTOUR DATA (20)
Cycle 20 CONTOUR DATA defines the machining information for
cycles 21 to 24.
CYCL DEF: Select Cycle 20 CONTOUR DATA
Milling depth Q1:
Distance from workpiece surface to pocket floor; incremental
Path overlap factor Q2:
Q2 x tool radius = stepover factor k
Allowance for side Q3:
Finishing allowance for the walls of the pocket or island
Allowance for floor Q4:
Finishing allowance for the pocket floor
Workpiece surface coordinates Q5:
Coordinate of the workpiece surface referenced to the current
datum; absolute
Set-up clearance Q6:
Distance from the tool to the workpiece surface; incremental
Clearance height Q7:
Height at which the tool cannot collide with the workpiece;
absolute
Rounding radius Q8:
Rounding radius of the tool at inside corners
Direction of rotation Q9:
• Clockwise Q9 = –1
• Counter clockwise Q9 = +1
Cycle 20 CONTOUR DATA is effective immediately upon
definition!