ISO 13041-1-2020 PDF

Full title and description

St ISO 13041-1-2020 — Test conditions for numerically controlled turning machines and turning centres — Part 1: Geometric tests for machines with horizontal workholding spindle(s). This international standard specifies geometric test procedures and tolerances for general-purpose numerically controlled (NC) turning machines and turning centres with horizontal work spindles (including applicable turret and single-spindle automatic lathes).

Abstract

This document, prepared with reference to ISO 230‑1, defines the geometric tests to be used to verify the static and quasi‑static geometric accuracy of NC turning machines and turning centres having horizontal workholding spindles. It provides terminology, axis designation, a set of measurement procedures (alignment, straightness, squareness, positioning accuracy, repeatability, spindle runout and concentricity checks) and the applicable tolerance categories for those tests. The standard is limited to verification of machine accuracy and does not cover dynamic operational tests or cutting performance.

General information

• Status: Published (confirmed current following systematic review).
• Publication date: 27 March 2020.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.20; 25.080.10 — numerically controlled (NC) machines; machine tools / test codes for machine tools.
• Edition / version: Edition 2 (2020).
• Number of pages: 47.

Scope

ISO 13041-1:2020 specifies geometric test methods and associated tolerances for normal‑accuracy NC turning machines and turning centres with horizontal workholding spindles. Where applicable, the procedures may also be applied to horizontal‑spindle turret lathes and single‑spindle automatic lathes. The scope covers only verification of geometric accuracy (alignment, positional and angular errors, repeatability and spindle geometric characteristics) and excludes operational/dynamic tests (e.g., vibration, cutting trials, speed/feed performance), which are addressed elsewhere.

Key topics and requirements

• Terminology and designation of controlled axes for turning machines and centres.
• Geometric measurement procedures: alignment of spindle and tailstock, straightness of linear axes, squareness between axes, angular error motions.
• Positioning accuracy and repeatability tests for primary NC axes (typically X and Z axes).
• Spindle geometric checks: radial and axial runout, concentricity and coaxial alignment with axes.
• Definition and application of tolerance classes corresponding to measured errors.
• Reference to ISO 230‑1 for general machine‑tool test code principles and measurement conditions.
• Guidance on test setups, instrumentation and environmental considerations relevant to geometric verification.

Typical use and users

Used by machine tool manufacturers, acceptance and quality inspectors, independent test laboratories, factory metrology teams, equipment purchasers and commissioning engineers to verify and document the geometric accuracy of NC lathes and turning centres. Also used by R&D groups and standards committees as a reference for design, comparison and conformity assessment of turning equipment.

Related standards

Key related standards include ISO 230‑1 (Test code for machine tools — Geometric accuracy), other parts of the ISO 13041 series (for example ISO 13041‑2 for vertical‑spindle machines, and ISO 13041‑5/6 for kinematic tests and finished test pieces), and specific ISO 230 parts that cover dynamic, kinematic and operational test methods.

Keywords

CNC turning, turning centre, lathe, geometric tests, positioning accuracy, repeatability, spindle runout, concentricity, axis squareness, ISO 13041, ISO 230‑1, machine tool test code, tolerances.

FAQ

Q: What is this standard?

A: ISO 13041‑1:2020 is Part 1 of the ISO 13041 series; it defines geometric test procedures and tolerances for numerically controlled turning machines and turning centres with horizontal workholding spindles.

Q: What does it cover?

A: It covers static and quasi‑static geometric verification — axis alignment and designation, straightness, squareness, positioning accuracy, repeatability and spindle geometric characteristics — and specifies corresponding tolerances. It does not cover dynamic operational tests or cutting performance.

Q: Who typically uses it?

A: Machine tool manufacturers, metrology and quality teams, acceptance/test laboratories, procurement and commissioning engineers, and standards/technical committees concerned with machine‑tool accuracy.

Q: Is it current or superseded?

A: ISO 13041‑1:2020 (Edition 2) was published on 27 March 2020 and has been confirmed as current following its systematic review cycle.

Q: Is it part of a series?

A: Yes. It is part of the ISO 13041 series of standards for NC turning machines and turning centres (other parts address vertical‑spindle machines, kinematic tests, finished test pieces and related topics).

Q: What are the key keywords?

A: CNC turning, turning centre, geometric tests, positioning accuracy, repeatability, spindle runout, axis alignment, ISO 13041, ISO 230‑1.