The interpretation of measurements

DUCOP.06

Scope

Annex A contains examples of how to interpret measured results and identifies the possible sources of error during manufacture.

Annex B contains practical hints on gear measurement, highlighting common mistakes which are often made when measuring gears.

Introduction

This code contains informative annexes which support the Code of Practice for Involute Gear Measurement DUCOP.O3.

It must be borne in mind that there is an inherent duality between manufacturing errors and measurement errors. For example, measurements which show runout or swash merely indicate that the measurement axis is not the same as the production axis and can as easily be caused by an error in the measurement set-up as in that of manufacture.

Before diagnosing a manufacturing problem by use of the examples in Annex A, therefore, it is vital that the potential sources of measurement error (as discussed in Annex B) are eliminated.

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