Sandvik Coromant Silent tools - users guide - Manual (Page 22)

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6. Use of the product
3-pass method
Method for achieving high accuracy in internal turning
with slender boring bars where the deflection of the bar
affects the obtained diameter.
Example:
40.000
37.000 + (40.000 - 37.000) / 3 = 38.000
38.000 + (40.000 - 37.670) / 2 = 39.165
40.000 + 39.165 - 38.825 = 40.340
37.000
37.670
38.825
40.020
0.020
Enter the desired finished dia
Measure the dia before the first pass
Run the first pass. The programmed dia is:
Measure the dia before second pass:
Run the second pass. The programmed dia is:
Measure the dia before third pass:
Run the third pass. The programmed dia is:
Measure the final dia:
Deviation: