Siemens SINUMERIK 840D Programming Manual page 158

3
Milling Cycles
3.9 Milling rectangular pockets – POCKET3
The other parameters can be selected as options. They define the insertion strategy and
overlapping for solid machining: (enter without sign)
real
_MIDA
real
_AP1
real
_AP2
real
_AD
real
_RAD1
real
_DP1
Function
The cycle can be applied to roughing and finishing.
For finishing, a face cutter is needed.
The depth infeed will always start at the pocket
center point and be performed vertically from there;
thus predrill can be suitably performed in this
position.
New functions compared to POCKET1:
• The milling direction can be defined with a
G instruction (G2/G3) or up-cut milling or down-
cut from the spindle direction
• For solid machining, the maximum infeed width in
the plane is programmable
• Final machining allowance for the pocket base
• Three different insertion strategies:
- Vertically at the pocket center point
- Along a helical path around the pocket center
- Oscillating around the pocket central axis
• Shorter approach paths in the plane for finishing
• Consideration of a blank contour in the plane and a
basic size at the base (optimum processing of pre-
formed pockets possible).
3-158
TENS DIGIT:
Value: 0...Perpendicular to pocket center with G0
1...Perpendicular to pocket center with G1
2...Along a helix
3...Oscillating along the pocket longitudinal axis
Maximum infeed width during solid machining in the plane
Basic size pocket length
Basic size pocket width
Basic pocket depth from reference plane
Radius of the helical path on insertion (relative to the tool center point
path) or maximum insertion angle for oscillating motion
Insertion depth per 360° revolution on insertion along helical path
SINUMERIK 840D/840Di/810D Programming Guide Cycles (PGZ) – 11.02 Edition
3
12.97
© Siemens AG, 2002. All rights reserved