Tool measurement

Tool measurement on the machine shortens non-productive times, increases machining accuracy and reduces scrapping and reworking of machined parts. With the tactile TT touch probes and the contact-free TL laser systems, HEIDENHAIN offers two completely different possibilities for tool measurement.

TT touch probes

Probing methodPhysical probing
Probing directions3-dimensional: ±X, ±Y, +Z
Probing forcesAxial: 8 N, radial 1 N
Tool materialsBreakage-prone teeth are at risk
Sensitivity to
unclean tools
Very small
Possible measuring cyclesLength, radius, breakage, individual teeth
Installation effortSimple connection to NC control
Signal transmissionCableRadio/infrared to SE 660; infrared to SE 642
Repeatability2 σ ≤ 1 µm
Min. tool diameter3 mm 1)
ModelTT 160TT 460

Measuring the tool radius

By probing the rotating tool, the touch probe finds the maximum tool radius. Then the tool orients itself to the longest tooth. The exact radius is measured by repeatedly probing the longest tooth to "close in" on the highest value

TL laser system
Probing methodNon-contacting by laser beam
Probing directions2-dimensional: ±X (or ±Y), +Z
Probing forcesNo forces, operates without contact
Tool materialsAny
Sensitivity to unclean toolsHigh (tool must be cleaned with blown air before measurement)
Possible measuring cyclesLength, radius, breakage, individual teeth, tooth geometry (also for combined contours)
Installation effortPLC adaptation in the NC control necessary (6 outputs, 3 inputs), compressed air connection
Signal transmissionCable
Repeatability2 σ ≤ 0.2 µm2 σ ≤ 1 µm
Min. tool diameter0.03 mm0.1 mm
Max. tool diameter37 mm 2)30 mm 2)80 mm 2)180 mm 2)
ModelTL NanoTL Micro 150TL Micro 200TL Micro 300

1) Probing force must not result in tool damage
2) With centered measurement