Overview
ISO 1701-1:2004 - Test conditions for milling machines with table of variable height - Part 1: Machines with horizontal spindle - defines geometric and machining accuracy tests and associated tolerances for general-purpose, normal-accuracy horizontal-spindle milling machines with a table of variable height. The standard is expressly limited to verification of machine accuracy (geometric and finishing machining tests) and does not cover dynamic running characteristics (vibration, abnormal noise, stick‑slip) or machine performance parameters (speeds, feeds), which are normally checked prior to accuracy testing.
Key topics and technical requirements
- Scope and machine types: Applies to machines with horizontal spindle and variable-height table; fixed-height table machines are covered by ISO 1984.
- Reference standards: Tests are specified with reference to ISO 230-1 (geometric accuracy of machine tools) and use milling nomenclature from ISO 3855.
- Test categories:
- Geometric tests (axes straightness, squareness, table angular deviations, spindle and arbor support checks). Example tests in the standard include straightness of the knee vertical movement and squareness between Z and X axes.
- Machining tests: Performed using finishing cuts only (no roughing cuts) to verify machining accuracy.
- Tolerances and units:
- Linear dimensions, deviations and tolerances in millimetres; angular deviations expressed as ratios or microradians/arcseconds where helpful.
- Example tolerances: straightness and squareness checks show values like 0.02 mm for a 300 mm measuring length; table angular deviations quoted as 0.04/1000 (40 µrad ≈ 8") and similar scaled limits.
- Minimum measurable tolerance = 0.005 mm where different measuring lengths are used.
- Measuring instruments: Dial gauges (resolution 0.001 mm or better), straightedges, squares; other instruments with equivalent accuracy may be used.
- Testing guidance: Test sequence is flexible for practical setup; users and suppliers should agree which tests to perform for acceptance.
Applications and who uses it
ISO 1701-1:2004 is used for:
- Acceptance testing and quality verification of milling machines with horizontal spindles.
- Machine tool manufacturers, purchasers, and inspection/service engineers performing factory acceptance tests (FAT) or site acceptance tests (SAT).
- Metrology and quality departments setting inspection procedures and tolerance criteria for production or maintenance.
- Integrators and contract manufacturers requiring documented machine accuracy for process planning.
Keywords: ISO 1701-1:2004, milling machines, horizontal spindle, accuracy testing, geometric tests, machining tests, ISO 230-1, tolerances, millimetre, dial gauge.
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