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HEIDENHAIN TNC 426 (280 476) Pilot User Manual

Page 39

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40

Cycles

for

Machining

Holes

and

Threads

DRILLING (200)

CYCL DEF: Select Cycle 200 DRILLING

Set-up clearance: Q200

Depth – Distance between workpiece surface and bottom

of hole: Q201

Feed rate for plunging: Q206

Pecking depth: Q202

Dwell time at top: Q210

Surface coordinate: Q203

2nd set-up clearance: Q204

Dwell time at depth: Q211

The TNC automatically pre-positions the tool in the tool axis. If the

depth is greater than or equal to the pecking depth, the tool drills to

the depth in one plunge.

11 CYCL DEF 200 DRILLING
Q200 = 2 ;SET-UP CLEARANCE
Q201 = -15 ;DEPTH
Q206 = 250 ;FEED RATE FOR PLUNGING
Q202 = 5 ;PLUNGING DEPTH
Q210 = 0 ;DWELL TIME AT TOP
Q203 = +0 ;SURFACE COORDINATE
Q204 = 100 ;2ND SET-UP CLEARANCE
Q211 = 0.1 ;DWELL TIME AT DEPTH
12 L Z+100 R0 FMAX M6
13 L X+30 Y+20 FMAX M3
14 CYCL CALL
15 L X+80 Y+50 FMAX M99
16 L Z+100 FMAX M2