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No. 99MBC095A
5.3.6 Application of the odd-numbered-edge cutting tool measurement
5.3.6.1 Odd-numbered-edge cutting tool outside diameter measurement
Since if the outside diameter measurement is
performed on a cutting tool which has an
odd number of cutting edges (such as drills
and end mills) using normal Segment 2,
measurement errors will be produced.
Therefore, in this case, use the “Odd-
numbered-edge cutting tool measurement
function” for measurement.
Calculate the target outside diameter from
the data collected with the “Sample mea-
surement” while the workpiece was rotating.
This method can be applied to any outside
diameter measurement of even-numbered-
edge cutting tool and gear teeth, etc. beside
an odd-numbered-edge cutting tool.
• Measurement example: (case of the above shown settings)
Workpiece
3-cutting-edge end mill/øD = ø10.0
±0.003
mm
Layout of reference bar (edge)
Segment 3 (lower) side
Number of workpiece revolutions
4 rpm
• Modifying the basic setup:
No.Setting item Item display Setup contents
Odd-numbered cutting
edge measurement
B3
• Modifying the basic setup:
No.Setting item Item display Setup contents
Segment Automatic setup (*1)F0
Number of averaging times 128 times (*2)F1
GO/NG judgment
9.997 mm
Lower limit value
Upper limit value 10.003 mm
F2
Number of samples 0 (Zero-run measurement)
F6
Calculation item
(tool outside diameter)
(*1): At the stage when “ ” is set from the “Calculation item”, the available
segments will be automatically set and the guidance for that item will not be dis-
played any more.
(*2): It is necessary to measure the workpiece (odd-numbered-edge cutting tool) while
rotating it. Determine the number of averaging times depending on the number of
workpiece revolutions.
(In this example it is assumed that the number of workpiece revolutions is approxi-
mately 4 rpm.)
Reference bar
Odd-numbered-edge cutting tool
øD
Segment 2
Segment 2+3
(maximum value)
Error
Segment 3
(minimum value)
