Mahr Digimar 817 CLM - Index Circle and Best Fit Circle Calculation

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Mahr GmbH • Digimar 817 CLM
4.5.5 Index circle / Best fit circle
The circle diameter of an index circle consisting of n bores or shaft
centers are to be determined using the Gaussian method of the least
squares. The circle / shaft center and the circle diameter consists of a
minimum of 3 and a maximum 50 bores or shafts, which the 817 CLM
can calculate.
– Press „CE“ to delete all data
– Press the 2D key
– Active 2D
– Measure bores 1-3 in the Z-axis
At first the display indicates the Z values;
and subsequently the diameter
– Tilt the workpiece (The workpiece will be arithmetically aligned at
90°)
– Measure bores 1 – 3 in exactly the same sequence as with the
X-axis
At first the display indicates the Z values;
and subsequently the X values
– Tilt the workpiece back into the original position
– Index circle function
Description / Sequence Symbols / Pictures
z
x
2D
2D
ON
CE
z
x
X
Z
ø