Setting machine parameters

 
Machine

The touch probe cycles 480, 481, 482, 483, 484 can be hidden with the optional hideMeasureTT machine parameter (no. 128901).

 
Tip
  • Programming and operating notes:
  • Before you start working with the touch probe cycles, check all machine parameters defined in ProbeSettings > CfgTT (no. 122700) and CfgTTRoundStylus (no. 114200) or CfgTTRectStylus (no. 114300).
  • When measuring a stationary tool, the control will use the feed rate for probing defined in the probingFeed machine parameter (no. 122709).

When measuring a rotating tool, the control automatically calculates the spindle speed and feed rate for probing.

The spindle speed is calculated as follows:

n = maxPeriphSpeedMeas / (r • 0.0063) where

n:

Spindle speed [rpm]

maxPeriphSpeedMeas:

Maximum permissible cutting speed in m/min

r:

Active tool radius [mm]

The probing feed rate is calculated as follows:
v = measuring tolerance • n with

v:

Probing feed rate [mm/min]

Measuring tolerance

Measuring tolerance [mm], depending on maxPeriphSpeedMeas

n:

Shaft speed [rpm]

probingFeedCalc (no. 122710) determines the calculation of the probing feed rate:

probingFeedCalc (no. 122710) = ConstantTolerance:

The measuring tolerance remains constant—regardless of the tool radius. With very large tools, however, the feed rate for probing is reduced to zero. The lower you set the maximum permissible rotational speed maxPeriphSpeedMeas (no. 122712) and the permissible tolerance measureTolerance1 (no. 122715), the sooner you will encounter this effect.

probingFeedCalc (no. 122710) = VariableTolerance:

The measuring tolerance is adjusted relative to the size of the tool radius. This ensures a sufficient feed rate for probing even with large tool radii. The control adjusts the measuring tolerance according to the following table:

Tool radius

Measuring tolerance

Up to 30 mm

measureTolerance1

30 to 60 mm

2 • measureTolerance1

60 to 90 mm

3 • measureTolerance1

90 to 120 mm

4 • measureTolerance1

probingFeedCalc (No. 122710) = ConstantFeed:

The measuring feed rate remains constant; the measuring error, however, rises linearly with the increase in tool radius:

Measuring tolerance = (r • measureTolerance1)/ 5 mm) where

r:

Active tool radius [mm]

measureTolerance1:

Maximum permissible error of measurement