HEIDENHAIN iTNC 530 501
15.1 Programming and Executing Simple Machining Operations
Example 1
A hole with a depth of 20 mm is to be drilled into a single workpiece.
After clamping and aligning the workpiece and setting the datum, you
can program and execute the drilling operation in a few lines.
First you pre-position the tool with straight-line blocks to the hole
center coordinates at a setup clearance of 5 mm above the workpiece
surface. Then drill the hole with Cycle G200.
Straight-line function: See “Straight line at rapid traverse G00 Straight
line with feed rate G01 F” on page 197, DRILLING cycle: See User’s
Manual, Cycles, Cycle 200 DRILLING.
%$MDI G71 *
N10 T1 G17 S2000 *
Call tool: tool axis Z
Spindle speed 2000 rpm
N20 G00 G40 G90 Z+200 *
Retract tool (rapid traverse)
N30 X+50 Y+50 M3 *
Move the tool at rapid traverse to a position above
the hole,
spindle on
N40 G01 Z+2 F2000 *
Position tool to 2 mm above hole
N50 G200 DRILLING *
Define Cycle G200 Drilling
Q200=2 ;SETUP CLEARANCE
Setup clearance of the tool above the hole
Q201=-20 ;DEPTH
Total hole depth (algebraic sign=working direction)
Q206=250 ;FEED RATE FOR PLNGN
Feed rate for drilling
Q202=10 ;PLUNGING DEPTH
Depth of each infeed before retraction
Q210=0 ;DWELL TIME AT TOP
Dwell time at top for chip release (in seconds)
Q203=+0 ;SURFACE COORDINATE
Workpiece surface coordinate
Q204=50 ;2ND SETUP CLEARANCE
Position after the cycle, with respect to Q203
Q211=0.5 ;DWELL TIME AT DEPTH
Dwell time in seconds at the hole bottom
N60 G79 *
Call Cycle G200 PECKING
N70 G00 G40 Z+200 M2 *
Retract the tool
N9999999 %$MDI G71 *
End of program
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