July 2013 6.5 Tilting and swivel axes 741
6.5.3 Temperature compensation with tilting axes
A change in temperature always causes a change in length. For tilting axes,
thermal growth of the spindle head must be compensated in the X, Y and/or Z
axes.
There are two possibilities for temperature compensation:
Permanently effective temperature compensation
• by entering a formula in the TEMPCOMP column of the description table
In most cases, the formula to be used will be the formula for calculating a
change in length: Δλ = λ ΔΤ α
Δl: Change in length
l: Length
ΔT: Change in temperature
α: Coefficient of expansion (steel: 11.5 · 10
–6
1/K)
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