HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 429)

GEAR HOBBING (Cycle 880, DIN/ISO: G880) 12.31
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TNC 640 | User's Manual Cycle Programming | 1/2015
429
Direction of rotation depending on the machining
side (Q550)
Determine the direction of rotation of the rotary table:
1 What tool? (Right-cutting / left-cutting)?
2 What machining side? X+ (Q550=0) / X- (Q550=1)
3 Look up the direction of rotation of the rotary table in one
of the two tables below!
Select the table for the direction
of rotation of your tool ( right-cutting/left-cutting ). In this
table, look up the direction of rotation of the rotary table for the
desired machining side
X+ (Q550=0) / X- (Q550=1) .
Tool: Right-cutting M3
Machining side
X+ (Q550=0)
Direction of table rotation:
clockwise (M303)
Machining side
X- (Q550=1)
Direction of table rotation:
counterclockwise (M304)
Tool: Left-cutting M4
Machining side
X+ (Q550=0) Direction of table rotation:
counterclockwise (M304)
Machining side
X- (Q550=1)
Direction of table rotation:
clockwise (M303)
(M303) (M304)
(M303) (M304)