HEIDENHAIN TNC 407 (280 580) User Manual - Manual (Page 243)

8-36
8 Cycles
TNC 407/TNC 415 B/TNC 425
Fig. 8.40: Cutter path for ROUGH-OUT:
A, B = pockets; C, D = islands
ROUGH-OUT (Cycle 22)
Process
• The control positions the tool over the cutter
infeed point
• The ALLOWANCE FOR SIDE is taken into
account.
• After reaching the first pecking depth, the tool
mills the contour in an outward direction at the
programmed feed rate Q12.
• First the island contours (C/D in Fig. 8.39) are
rough-milled until the pocket contour (A/B) is
approached.
• Then the pocket contour is rough-milled and the
tool is retracted to the CLEARANCE HEIGHT.
Input data
• PECKING DEPTH Q10:
Dimension by which the tool is plunged in each infeed
(negative sign for negative working direction)
• FEED RATE FOR PECKING Q11:
Traversing speed of the tool in mm/min during penetration
• FEED RATE FOR MILLING Q12:
Traversing speed of the tool in mm/min while milling
Required tool
The cycle requires a center-cut end mill (ISO 1641).
FLOOR FINISHING (Cycle 23)
Process
The function of cycle 23 FLOOR FINISHING is similar to cycle 22 ROUGH-
OUT. The tool approaches the machining plane in a vertically tangential
arc.
Input data
• FEED RATE FOR PECKING Q11:
Traversing speed of the tool during penetration
• FEED RATE FOR MILLING Q12:
Traversing speed in the machining plane
8.4 SL Cycles (Group II)
A B
D C