Siemens SINUMERIK 828D Function Manual page 30

Table of contents
18.4.9 Tool parameter 24: Undercut angle ....................................................................................... 1456
18.4.10 Tools with a relevant tool point direction ................................................................................ 1457
18.5 Tool radius compensation 2D (TRC) ..................................................................................... 1458
18.5.1 General .................................................................................................................................. 1458
18.5.2 Selecting the TRC (G41/G42) ................................................................................................ 1459
18.5.3 Approach and retraction behavior (NORM/KONT/KONTC/KONTT) ..................................... 1460
18.5.4 Smooth approach and retraction ........................................................................................... 1464
18.5.4.1 Function ................................................................................................................................. 1464
18.5.4.2 Parameters ............................................................................................................................ 1465
18.5.4.3 Velocities ............................................................................................................................... 1472
18.5.4.4 System variables ................................................................................................................... 1474
18.5.4.5 Supplementary conditions ..................................................................................................... 1475
18.5.4.6 Examples ............................................................................................................................... 1476
18.5.5 Deselecting the TRC (G40) ................................................................................................... 1479
18.5.6 Compensation at outside corners .......................................................................................... 1479
18.5.7 Compensation at inside corners ............................................................................................ 1483
18.5.8 Collision detection and bottleneck detection .......................................................................... 1485
18.5.9 Blocks with variable compensation value .............................................................................. 1487
18.5.10 Keep tool radius compensation constant ............................................................................... 1489
18.5.11 Alarm behavior ....................................................................................................................... 1492
18.5.12 Intersection procedure for polynomials .................................................................................. 1493
18.5.13 G461/G462 Approach/retract strategy expansion ................................................................. 1493
18.6 Toolholder with orientation capability..................................................................................... 1497
18.6.1 General .................................................................................................................................. 1497
18.6.2 Kinematic interaction and machine design ............................................................................ 1504
18.6.3 Oblique machining with 3 + 2 axes ........................................................................................ 1511
18.6.4 Machine with rotary work table .............................................................................................. 1512
18.6.5 Procedure when using toolholders with orientation capability ............................................... 1516
18.6.6 Programming ......................................................................................................................... 1520
18.6.7 Supplementary conditions and control system response for orientation ............................... 1521
18.7 Cutting data modification for tools that can be rotated .......................................................... 1524
18.7.1 Function ................................................................................................................................. 1524
18.7.2 Determination of angle of rotation .......................................................................................... 1524
18.7.3 Cutting edge position, cut direction and angle for rotary tools ............................................... 1525
18.7.4 Modifications during the rotation of turning tools ................................................................... 1527
18.7.5 Cutting edge position for milling and tapping tools ................................................................ 1530
18.7.6 Modifications during rotation of milling and tapping tools ...................................................... 1531
18.7.7 Parameter assignment ........................................................................................................... 1531
18.7.8 Programming ......................................................................................................................... 1532
18.7.9 Example ................................................................................................................................. 1536
18.8 Incrementally programmed compensation values ................................................................. 1538
18.8.1 G91 extension ....................................................................................................................... 1538
18.8.2 Machining in direction of tool orientation ............................................................................... 1539
18.9 Basic tool orientation ............................................................................................................. 1541
18.10 Special handling of tool compensations ................................................................................ 1545
18.10.1 Relevant setting data ............................................................................................................. 1545
18.10.2 Mirror tool lengths (SD42900 $SC_MIRROR_TOOL_LENGTH) ........................................... 1546
18.10.3 Mirror wear lengths (SD42920 $SC_WEAR_SIGN_CUTPOS) .............................................. 1547
18.10.4 Tool length and plane change (SD42940 $SC_TOOL_LENGTH_CONST) ........................... 1548
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions