Article Contents
POCKET2 Introduction
The cycle (POCKET2) is a combined roughing-finishing cycle. Use this cycle to machine circular pockets in the machining plane.
NOTICE: The cycle requires a milling cutter with an “end tooth cutting across center” (DIN844).
Note: The pocket milling cycle POCKET4 can be performed with any tool.
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| “Siemens CNC Milling | POCKET1 | Milling Rectangular Pockets” |
Supported CNC Series
| Siemens CNC 802D, 810D, 840D, 840D sl, 840Di, 840Di sl series controllers. |
POCKET2 Format
| POCKET2 (RTP, RFP, SDIS, DP, DPR, PRAD, CPA, CPO, FFD, FFP1, MID, CDIR, FAL, VARI, MIDF, FFP2, SSF) |
Parameters
| RTP = Retraction plane (absolute) |
| RFP = Reference plane (absolute) |
| SDIS = Safety clearance (enter without sign) |
| DP = Pocket depth (absolute) |
| DPR = Pocket depth relative to the reference plane (enter without sign) |
| PRAD = Pocket radius (enter without sign) |
| CPA = Pocket center point, abscissa (absolute) |
| CPO = Pocket center point, ordinate (absolute) |
| FFD = Feedrate for depth infeed |
| FFP1 = Feedrate for surface machining |
| MID = Maximum infeed depth for one infeed (enter without sign) |
| CDIR = Mill direction for machining the pocket ( Values: 2: (for G2); 3: (for G3) ) |
| FAL = Finishing allowance at the pocket edge (enter without sign) |
| VARI = Machining type ( Values: 0: Complete machining; 1: Roughing; 2: Finishing ) |
| MIDF = Maximum infeed depth for finishing |
| FFP2 = Feedrate for finishing |
| SSF = Speed when finishing |
POCKET2 Examples
POCKET2 CNC Program Example – 1
With this program, you can make a circular pocket in the YZ plane (G19). The center point is determined by Y50 Z50. The infeed axis for the depth infeed is the X axis, the pocket depth is entered as an absolute value. Neither finishing dimension nor safety clearance is specified.
DEF REAL RTP=3, RFP=0, DP=-20, PRAD=25, FFD=100, FFP1, MID=6 ; Definition of variables with value assignments
N10 FFP1=FFD*2 ;
N20 G19 G90 G0 S650 M3 ; Specification of technology values
N25 T10 D1 ;
N27 M6 ;
N30 Y50 Z50 ; Approach start position
N40 POCKET2 (RTP, RFP, , DP, , PRAD, 50, 50, FFD, FFP1, MID, 3, ) ; Cycle call; Parameters FAL, VARI, MIDF, FFP2, ;SSF are omitted
N50 M30 ; Program end
DEF REAL RTP=3, RFP=0, DP=-20, PRAD=25, FFD=100, FFP1, MID=6 ; Definition of variables with value assignments
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