Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual download pdf (Page 148)

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4.1 Tool Measurement with the TT Tool Touch Probe

4.1 Tool Measurement with the TT

Tool Touch Probe

Overview

In conjunction with the TNC’s tool measurement cycles, the tool touch

probe enables you to measure tools automatically. The compensation

values for tool length and radius can be stored in the central tool file

TOOL.T and are accounted for at the end of the touch probe cycle. The

following types of tool measurement are provided:

 Tool measurement while the tool is at standstill.

 Tool measurement while the tool is rotating.

 Measuring individual teeth.

Setting the machine parameters

When measuring a rotating tool, the TNC automatically calculates the

spindle speed and feed rate for probing.

The spindle speed is calculated as follows:

n = maxPeriphSpeedMeas / (r • 0.0063) where

The feed rate for probing is calculated from:

v = meas. tolerance • n where

The TNC and the machine tool must be set up by the

machine tool builder for use of the TT touch probe.

Some cycles and functions may not be provided on your

machine tool. Refer to your machine manual.

Before you start work with the TT cycles, inspect all

machine parameters defined in ProbSettings >

CfgToolMeasurement and CfgTTRoundStylus.

The TNC uses the feed rate for probing defined in

probingFeed when measuring a tool at standstill.

n Spindle speed (rpm)

maxPeriphSpeedMeas Maximum permissible cutting speed in m/min

r Active tool radius in mm

v Feed rate for probing in mm/min

Measuring

tolerance

Measuring tolerance [mm], depending on

maxPeriphSpeedMeas

n Speed in rpm

1 2 ... 143 144 145 146 147 148 149 150 151 152 153 ... 164 165

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Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual Page 148