Abstract

This standard provides the evaluation criteria for double flank testers. Recommended artifact sizes and geometry are provided along with measurement system conditions. Annex A provides a method for estimating calibration uncertainty. 

Foreword

Between 1994 and 1998, AGMA published three standards on calibration of gear measuring instruments: ANSI/AGMA 2010-A94, Measuring Instrument Calibration – Part I, Involute Measurement, ANSI/AGMA 2113-A97, Measuring Instrument Calibration, Gear Tooth Alignment Measurement, and ANSI/AGMA 2114-A98, Measuring Instrument Calibration, Gear Pitch and Runout Measurements. These standards covered elemental measurements specified in the accuracy requirements of ANSI/AGMA 2015-1-A01, Accuracy Classification System – Tangential Measurements for Cylindrical Gears. The Calibration Committee decided that supplemental information, on measurement system conditions for calibration, accuracy requirements and uncertainty determination, was desirable to have in an Information Sheet, AGMA 931-A02, Calibration of Gear Measuring Instruments and Their Application to the Inspection of Product Gears, that was published in 2002.

The material in these AGMA documents was combined and submitted to ISO for the development of ISO 18653:2003, Gears – Evaluation of instruments for the measurement of gears, and ISO/TR 10064-5:2005, Cylindrical gears – Code of inspection practice – Part 5: Recommendations relative to evaluation of gear measuring instruments.

The Calibration Committee decided that similar standardization and information was needed for the evaluation methods of double flank testers used for radial composite measurement of gears. After a study of existing practices, standards, and literature the information contained herein is a consolidation of the most common methods currently in existence.

The first draft of ANSI/AGMA 2116-A05 was made in August 2003. It was approved by the AGMA membership in October 2005. It was approved as an American National Standard on December 29, 2005.

The changes in this edition include:

• incorporated AGMA 935 as the new Annex A, Recommendations relative to the evaluation of radial composite gear double flank testers;
• deleted the former Annex B, Calibration certificate requirements, and moved the content into the body of the document;
• added definition of Primary Laboratory;
• updated format.

In August 2022, the AGMA Technical Division Executive Committee (TDEC) approved the start of the ANSI/AGMA 2116-B24 project, which was written by the AGMA Gear Accuracy Committee. It was approved by the AGMA Board of Directors in March 2024. It was approved as an American National Standard on April 1, 2024.

Scope

This standard provides evaluation methods for double flank testers used for radial composite measurement of gears. Recommendations are given for the use of artifacts. Guidance is also given on calibration certificate requirements. Annex A is informative and discusses methods for calibration and measurement uncertainty. 

Normative References

The following documents contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions were valid. All publications are subject to revision, and the users of this standard are encouraged to investigate the possibility of applying the most recent editions of the publications listed.

AGMA 915-2, Inspection Practices – Part 2: Double Flank Radial Composite Measurements

AGMA 915-3, Inspection Practices – Part 3: Gear Blanks, Shaft Center Distance and Parallelism

ANSI/AGMA 1012, Gear Nomenclature, Definitions of Terms with Symbols

ANSI/AGMA ISO 1328-2, Cylindrical Gears – ISO System of Flank Tolerance Classification – Part 2: Definitions and Allowable Values of Double Flank Radial Composite Deviations

ISO 14253-1, Geometrical product specifications (GPS) – Inspection by measurement of workpieces and measuring equipment – Part 1: Decision rules for verifying conformity or nonconformity with specifications

ISO 18653, Gears – Evaluation of instruments for the measurement of individual gears

ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories 

ISO/TS 14253-2, Geometrical product specifications (GPS) – Inspection by measurement of workpieces and measuring equipment – Part 2: Guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification

Pages: 26

ISBN: 978-1-64353-168-7