Siemens SINUMERIK 840D Programming Manual page 205

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12.97
08.99
3.15 Pocket milling with islands – CYCLE73, CYCLE74, CYCLE75
real
_FFP1
real
_FFD
int
_CDIR
real
_PA
real
_PO
real
_RAD
real
_DP1
Function
Cycle CYCLE73 enables you to machine pockets with
or without islands. It supports complete machining of
this type of pocket and offers the following machining
operations:
• Rough drill
• Solid machine pocket
• Machine residual material
• Finish edge
• Finish base.
Pocket and island contours are freely programmed
in DIN code supported, for example, by the
geometry processor.
The cycle is executed once for each operation
according to the programmed machining type (_VARI).
In other words, in applications requiring roughing and
finishing, or an additional rough-cut residual material
operation, CYCLE73 must be called a second time.
Solid machine pocket
When a pocket is solid machined, it is machined with
the active tool down to the programmed finishing
dimensions. The insertion strategy for milling can be
selected. The cutting operation is segmented in the
pocket depth direction (tool axis) in accordance with
the specified values.
© Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
Feedrate for surface machining
Feedrate for depth infeed
Milling direction for machining the pocket: (enter without sign)
Value: 0...Down-cut milling (as spindle rotation)
1...Downcut milling
2...with G2 (irrespective of spindle direction)
3...with G3
Start point in first axis (only with manual selection of start point)
Start point in second axis (only with manual selection of start point)
Radius center-point path on insertion along helical path or
max. insertion angle for oscillating insertion motion
Insertion depth per 360° revolution on insertion along helical path
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Milling Cycles
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