Overview
ISO 6480:2019 - Test conditions for horizontal internal type broaching machines - Testing of accuracy provides a standardized set of geometric tests and tolerance guidelines for horizontal internal type broaching machines whose main cutting axis (Z‑axis) is horizontal. The document is focused on verification of machine accuracy (acceptance, comparison, maintenance) and specifies terminology, axis designation and test methods with reference to ISO 230‑1. It does not cover operational testing (vibration, speeds/feeds, noise) or broader machine characteristics.
Key topics
- Scope and purpose: Defines geometric tests and applicable tolerances for normal‑accuracy horizontal internal broaching machines. Emphasizes metric units and minimum tolerance conventions.
- Reference standard: Requires reference to ISO 230‑1:2012 for installation, levelling, measuring methods and uncertainty guidance.
- Terminology and axes: Provides terms and designation of axes for internal broaching machines (Z main cutting axis, W retrieving axis, etc.), and multilingual term annexes.
- Geometric tests (examples):
- G1 - Flatness of the face plate: two‑step measurements in horizontal and vertical directions using a dial gauge with a metrological carriage. Example tolerances shown (0.025 mm for measuring length up to 300 mm; total tolerance 0.050 mm).
- G2 - Parallelism of pulling chuck hole axis to Z‑axis: measurements in YZ and ZX planes using a test mandrel and dial gauge. Example tolerance: 0.050/300 mm (0.165/1000) or 33″.
- G3 - Squareness of pulling chuck movement to face plate and additional geometric verification tests listed in Clause 6.
- Measuring instruments: Examples include dial test indicators (analogue/digital), LVDTs, straightedges, squares and test mandrels. The standard allows equivalent instruments with equal or lower measurement uncertainty.
- Tolerancing guidance: Tolerances are guidelines; acceptance tolerances can be agreed between purchaser and supplier. Minimum tolerance value noted as 0.010 mm.
Applications
- Acceptance and commissioning tests for new or refurbished horizontal internal broaching machines
- Factory acceptance testing (FAT), site acceptance testing (SAT) and routine accuracy checks
- Supplier–user contracts and purchase specifications where measurable accuracy criteria are required
- Quality assurance, metrology labs and maintenance teams verifying geometric accuracy before production
Who uses it: machine tool manufacturers, purchasers/procurement, test laboratories, metrologists, maintenance and quality engineers in metalworking and automotive supply chains.
Related standards
- ISO 230‑1:2012 - Test code for machine tools - Geometric accuracy (normative reference used throughout ISO 6480:2019)
- Work developed by ISO/TC 39, Machine tools, Subcommittee SC 2 (Test conditions for metal cutting machine tools)
For acceptance testing, specify which tests from ISO 6480:2019 will be applied in orders and consult your national standards body or ISO for purchase and implementation details.