Interactive Klartext course · Lesson 12 / 15

Precision holes with drilling and Cycle 201 reaming

Build a realistic multi-tool hole process: establish the centre, drill undersize and finish the bore with a reamer.

Start this interactive lesson See the example

What you will learn

Use a centre drill before the full-depth drilling operation.
Leave appropriate material for the reaming tool.
Define reaming depth, feed and retract behaviour with Cycle 201.

How it works

A precision reamed hole is normally produced in stages. Spotting helps establish location, drilling creates the undersize bore and reaming finishes the diameter and surface.

Cycle 201 stores the supported reaming motion and feed parameters. The same labeled hole positions can be reused across the tool changes.

Klartext example

Try the essential blocks

This compact example introduces the lesson topic. Use the guided practice for the complete checked exercise.

TOOL CALL 6 Z S1200 F200
M3
CYCL DEF 201 ; Reaming
 Q200=+2   ; safety clearance
 Q201=-20  ; depth
 Q206=+200 ; reaming feed
 Q211=+0   ; dwell at bottom
 Q208=+500 ; retraction feed
 Q203=+0   ; surface coordinate
 Q204=+50  ; second safety clearance
L X+30 Y+30 FMAX M99

Ready to practice?

Write the blocks and check the 3D result

Open lesson 12 in TNC Sim