ISO 10791-1:2015

Overview

ISO 10791-1:2015 - Test conditions for machining centres - Part 1: Geometric tests for machines with horizontal spindle (horizontal Z-axis) - defines the geometric acceptance and verification tests for machining centres (and compatible numerically controlled machines) with a horizontal spindle. It focuses exclusively on geometric accuracy (not operational performance) and applies to machines with three numerically controlled linear axes (X ≤ 5000 mm, Y ≤ 3200 mm, Z ≤ 2000 mm) and to common supplementary movements such as rotary, tilting and swivelling tables.

Key topics and technical requirements

• Scope of tests: Geometric verification of linear axes, rotary/tilting/swirling tables and spindle geometry; excludes accessory spindle heads (covered by ISO 17543-1).
• Primary geometric tests (as structured in the standard):
  • Straightness errors of linear motions
  • Angular errors of linear motions
  • Squareness between linear motions
  • Spindle geometric tests
• Table configurations: Normative annexes for four table types:
  • Annex A: horizontal non-rotating tables
  • Annex B: tables rotating around a vertical B' axis
  • Annex C: tables rotating around a vertical B' axis plus tilting around a horizontal A' axis
  • Annex D: tables rotating around a horizontal A' axis and swivelling around a vertical B' axis
• Measurement conventions: Linear units in millimetres; angular deviations expressed as ratios (with microradians/arcseconds for clarification). The standard references ISO 230-1 for installation, warm-up and measuring uncertainty guidance.
• Testing practice: Tests can be performed in any practical sequence; instrument examples given but alternatives with comparable uncertainty are permitted. Tolerances are guidelines and can be adapted by agreement; minimum tolerance is specified (0.005 mm).
• Cross-references: Kinematic tests from ISO 10791-6 may be used as alternatives for certain kinematic/geometric checks where appropriate.

Practical applications

• Acceptance testing and supplier verification for new machining centres with horizontal spindle
• Factory acceptance testing (FAT), site acceptance testing (SAT) and preventive maintenance geometric checks
• Benchmarking and comparative performance evaluation between machines or after retrofit/repair
• Input to compensation maps and machine calibration activities in precision manufacturing

Who should use ISO 10791-1:2015

• Machine tool manufacturers and suppliers
• Quality and metrology engineers in metalworking and aerospace industries
• Service engineers and commissioning teams performing acceptance or maintenance tests
• Production engineers specifying machine capability and tolerance requirements

Related standards

• ISO 230-1:2012 - Test code for machine tools (geometric accuracy, no-load)
• ISO 10791-6:2014 - Accuracy of speeds and interpolations (kinematic tests)
• ISO 17543-1 - Accessory spindle heads (coverage outside this part)

Keywords: ISO 10791-1:2015, geometric tests, machining centres, horizontal spindle, machine tool testing, straightness, squareness, spindle accuracy, rotary tables, positional accuracy.