Article Contents
POCKET1 Introduction
The cycle (POCKET1) is a combined roughing-finishing cycle. With this cycle, you can machine rectangular pockets in any position in the machining plane.
NOTICE: The cycle requires a milling cutter with an “end tooth cutting across center” (DIN844).
Note: The pocket milling cycle POCKET3 can be performed with any tool.
| You may be interested also: |
| “Siemens CNC Milling | SLOT2 | Circumferential Slot” |
Supported CNC Series
| Siemens CNC 802D, 810D, 840D, 840D sl, 840Di, 840Di sl series controllers. |
POCKET1 Format
| POCKET1 (RTP, RFP, SDIS, DP, DPR, LENG, WID, CRAD, CPA, CPD, STA1, 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) |
| LENG = Pocket length (enter without sign) |
| WID = Pocket width (enter without sign) |
| CRAD = Corner radius (enter without sign) |
| CPA = Pocket center point, abscissa (absolute) |
| CPO = Pocket center point, ordinate (absolute) |
| STA1 = Angle between longitudinal axis and abscissa ( Range of values: 0<=STA1<180 degrees ) |
| 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 |
POCKET1 Examples
POCKET1 CNC Program Example – 1
With this program, you can make a pocket with a length of 60 mm, a width of 40 mm, a corner radius of 8 mm and a depth of 17.5 mm (difference between reference plane and pocket base) in the XY plane (G17). The pocket has an angle of 0 degrees to the X axis. The final machining allowance of the pocket edges is 0.75 mm, the safety distance in the Z axis, which is added to the reference plane, is 0.5 mm. The center point of the pocket lies at X60 and Y40, the maximum depth infeed is 4 mm. Merely a rough machining operation is to be carried out.
DEF REAL LENG, WID, DPR, CRAD ; Definition of variables
DEF INT VARI
N10 LENG=60 WID=40 DPR=17.5 CRAD=8 ; Value assignments
N20 VARI=1
N30 G90 S600 M4 ; Specification of technology values
N35 T20 D2 ;
N37 M6 ;
N40 G17 G0 X60 Y40 Z5 ; Approach start position
N50 POCKET1 (5, 0, 0.5, , DPR, LENG, WID, CRAD, 60, 40, 0, 120, 300, 4, 2, 0.75, VARI) ; Cycle call; Parameters MIDF, FFP2, and SSF are omitted
N60 M30 ; Program end
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