ISO 230-7-2015 PDF

Full title and description

Test code for machine tools — Part 7: Geometric accuracy of axes of rotation (ISO 230-7:2015). This part of ISO 230 specifies methods for the specification and testing of the geometric accuracy (error motions and speed-induced shifts) of rotary axes used in machine tools, including spindles, rotary heads and rotary/swivelling tables.

Abstract

ISO 230-7:2015 standardizes definitions, measurements and test procedures to characterise unintended motions of axes of rotation (error motion) and speed-induced axis shifts. It identifies what is covered (axis error motion and speed-induced shifts) and what is excluded (angular positioning accuracy, run-out, thermal effects, balancing, noise and certain spindle-specific measurements), and references other parts of ISO 230 and related standards for those topics.

General information

• Status: Published (corrected version issued July 2015)
• Publication date: May 2015 (corrected English version July 2015)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 25.080.01 (Machine tools in general)
• Edition / version: 2 (2015)
• Number of pages: 72

Scope

Defines test procedures and specification methods to determine the geometric accuracy of machine-tool rotary axes. Applicable to spindle units, rotary heads and rotary/swivelling tables, the document covers axis-of-rotation error motion and speed-induced axis shifts. It explicitly excludes angular positioning accuracy, surface/component run-out, thermally induced shifts (covered by ISO 230‑3), balancing and certain speed/balancing/noise tests, directing users to other ISO documents where appropriate.

Key topics and requirements

• Definitions and metrics for axis-of-rotation error motion (radial/axial/run-out components).
• Procedures and instrumentation for measuring error motion of rotary axes (measurement setups, probe arrangements, environmental considerations).
• Tests for speed-induced axis shifts and reporting of measured shifts across operating speed ranges.
• Specified acceptance/reporting formats for test results and tolerancing guidance for geometric error motions.
• Clarification of exclusions and references to related ISO parts (thermal effects, angular positioning, vibration/noise, balancing).

Typical use and users

Used by machine-tool manufacturers, metrology and calibration laboratories, OEM quality and R&D teams, test houses and end users who need to specify, verify or certify the geometric performance of rotary axes (spindles, rotary tables, rotary heads). Also referenced by standards committees and test-lab accreditation bodies when assessing machine-tool accuracy and reporting artefacts.

Related standards

ISO 230-1 and ISO 230-2 (positioning and performance tests), ISO 230-3 (thermal effects), ISO/TR 230-8 (inertial vibration considerations), ISO 10791-6 and ISO 13041-6 (rotational speed and accuracy for specific machine types), ISO 1940-1 and ISO 6103 (balancing). ISO 230-7 is part of the ISO 230 test-code series for machine tools.

Keywords

machine tools; rotary axis; spindle; rotary table; geometric accuracy; error motion; axis shift; test code; ISO 230; metrology

FAQ

Q: What is this standard?

A: ISO 230-7:2015 is Part 7 of the ISO 230 test code series and specifies methods to measure and report the geometric accuracy (error motions and speed-induced shifts) of axes of rotation on machine tools.

Q: What does it cover?

A: It covers measurement definitions, test procedures and reporting formats for axis-of-rotation error motion and speed-induced axis shifts for spindles, rotary heads and rotary/swivelling tables; it excludes angular positioning, run-out, thermal effects and other specialised measurements addressed in other standards.

Q: Who typically uses it?

A: Machine-tool manufacturers, metrology/calibration labs, OEM quality and R&D engineers, test houses, specification authors and standards committees concerned with machine-tool accuracy and acceptance testing.

Q: Is it current or superseded?

A: ISO 230-7:2015 is the second edition (published May 2015, corrected July 2015) and replaced ISO 230-7:2006; users should verify the current withdrawal/revision status with their national standards body or ISO before purchase or normative reference.

Q: Is it part of a series?

A: Yes — it is Part 7 of the ISO 230 "Test code for machine tools" series, which includes multiple parts addressing positioning, thermal effects, noise, vibration and other machine-tool test methods.

Q: What are the key keywords?

A: machine tools, rotary axis, spindle, geometric accuracy, error motion, speed-induced axis shift, test code, ISO 230.