Overview
SIST-TP ISO/TR 10064-1:2020 (identical to ISO/TR 10064-1:2019) is a code of inspection practice that supplements ISO 1328‑1:2013. It gives practical guidance for the measurement of cylindrical involute gear tooth flanks, focusing on the measurement, analysis and interpretation of profile, helix, pitch and tangential composite characteristics. The document describes measuring equipment, recommended procedures, calibration and advice for analysing measurement results. Note: double flank testing is excluded (see ISO/TR 10064‑2).
Key topics and technical scope
- Scope and conventions: definitions, symbols, datum axis, numbering of teeth/pitches and measurement positions.
- Types of measuring equipment: coordinate measuring machines (CMM), gear measuring machines (GMM), portable/hand‑held pitch devices, optical and computed tomography (CT) techniques for small gears.
- Measurement methods: generative vs. non‑generative methods, pitch measurement approaches, radial runout measurement, tooth thickness measurement and in‑process measurement on machine tools.
- Calibration and artifacts: calibration requirements for gear metrology equipment and recommended artefacts.
- Recommended measurement procedure: good measurement practice, probe issues (e.g., on aluminium parts), mounting and example output formats.
- Inspection strategies for large gears: portable inspection, segment disassembly and coordinate‑based measurement.
- Analysis and interpretation: profile deviation diagrams, helix deviation diagrams, cumulative and single pitch deviations, radial runout and eccentricity evaluation, and procedures for interpreting common manufacturing errors.
- Single flank composite testing: principles, setup, influence of profile/pitch/helix deviations and use of master gears.
Practical applications
- Quality control and acceptance testing of cylindrical involute gears used in automotive, industrial gearboxes, machine tools and aerospace transmissions.
- First‑piece inspection, sampling plans and statistical process control (SPC) for gear manufacture.
- Process troubleshooting: identifying hob runout, cutter deflection, helix slope issues, profile control failures and pitch indexing errors.
- On‑machine measurement and portable inspection of oversized gears that cannot be mounted on conventional gear testers.
Who should use this standard
- Gear metrologists and inspection labs
- Manufacturing and quality engineers in gear production
- Design engineers requiring verification criteria for gear geometry
- Calibration and test equipment suppliers
- Standards bodies and auditors implementing ISO 1328‑1:2013 requirements
Related standards
Keywords: SIST-TP ISO/TR 10064-1:2020, ISO/TR 10064-1, gear measurement, cylindrical gear tooth flanks, gear metrology, profile helix pitch, gear inspection.