HEIDENHAIN TNC 426, TNC 430 31
3.1 Programming and Executing Simple Machining Operations
Straight-line function L (see “Straight line L” on page 140), PECKING
cycle (see “PECKING (Cycle 1)” on page 211).
Example 2: Correcting workpiece misalignment on machines
with rotary tables
Use the 3-D touch probe to rotate the coordinate system. See “Touch
Probe Cycles in the Manual and Electronic Handwheel Operating
Modes,” section “Compensating workpiece misalignment” in the
new Touch Probes Cycles User’s Manual.
Write down the Rotation Angle and cancel the Basic Rotation.
Select operating mode: Positioning with MDI.
Select the axis of the rotary table, enter the rotation
angle you wrote down previously and set the feed
rate.For example: L C+2.561 F50
Conclude entry.
Press the machine START button: The rotation of the
table corrects the misalignment.
7 CYCL DEF 1.1 SET UP 5
Setup clearance of the tool above the hole
8 CYCL DEF 1.2 DEPTH -20
Total hole depth (Algebraic sign=working direction)
9 CYCL DEF 1.3 PECKG 10
Depth of each infeed before retraction
10 CYCL DEF 1.4 DWELL 0.5
Dwell time in seconds at the hole bottom
11 CYCL DEF 1.5 F250
Feed rate for pecking
12 CYCL CALL
Call PECKING cycle
13 L Z+200 R0 F MAX M2
Retract the tool
14 END PGM $MDI MM
End of program
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