ISO 13041-2-2020 PDF

Full title and description

Test conditions for numerically controlled turning machines and turning centres — Part 2: Geometric tests for machines with a vertical workholding spindle. This international standard specifies the geometric verification tests and applicable tolerances for general-purpose, normal-accuracy NC turning machines and turning centres equipped with a vertical workholding spindle.

Abstract

This document, with reference to ISO 230‑1 and ISO 230‑7, defines the geometric tests, terminology, axis designation and the corresponding tolerances for NC turning machines/turning centres having a vertical workholding spindle. It clarifies configurations and common features relevant to geometric accuracy verification and explicitly excludes operational tests (e.g. vibration, abnormal noise) and non-geometric machine characteristics (e.g. speeds, feeds).

General information

• Status: Published and confirmed (current).
• Publication date: March 2020 (Edition 2, published 2020-03).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.20 (Numerically controlled machines).
• Edition / version: Edition 2 (2020).
• Number of pages: 36 pages (ISO published version).

Scope

Specifies geometric tests and tolerances for general-purpose, normal-accuracy NC turning machines and turning centres with a vertical workholding spindle. The scope covers terminology, designation of controlled axes and test procedures referenced to ISO 230‑1 and ISO 230‑7. It applies only to verification of geometric accuracy and does not cover operational testing or machine performance characteristics such as vibration, abnormal noise, stick‑slip, speeds or feeds.

Key topics and requirements

• Definitions and terminology specific to vertical-spindle turning machines (axis designation and configurations).
• Geometric test methods for axes, squareness, straightness, repeatability and related positional tolerances.
• Reference to and use of ISO 230‑1 and ISO 230‑7 as normative references for test conditions and metrological procedures.
• Specification of applicable tolerances for normal-accuracy (general-purpose) machines.
• Guidance on test setups and interpretation of results; explicit exclusion of operational/performance tests (vibration, speeds, feeds).

Typical use and users

Used by machine tool manufacturers, test laboratories, quality/metrology departments, third‑party certification bodies and end users (production engineering, maintenance) to verify and document geometric accuracy of vertical‑spindle NC turning machines and turning centres. Also referenced by standards committees and organizations harmonizing machine tool acceptance and test procedures.

Related standards

Part of the ISO 13041 series of test conditions for NC turning machines and turning centres (other parts include geometric tests for horizontal spindles and additional accuracy/speed/interpolation test parts). Normative references within this part include ISO 230‑1 (test code for machine tools — geometric accuracy of positioning) and ISO 230‑7 (testing of machine tool performance using laser interferometry).

Keywords

NC turning machines, turning centres, geometric tests, vertical workholding spindle, machine tool metrology, ISO 13041, ISO 230‑1, ISO 230‑7, tolerances, axis designation, verification

FAQ

Q: What is this standard?

A: ISO 13041‑2:2020 is an international standard that specifies geometric test procedures and tolerances for numerically controlled turning machines and turning centres with a vertical workholding spindle.

Q: What does it cover?

A: It covers terminology, axis designation, specific geometric tests (e.g., straightness, squareness, positional accuracy and repeatability) and the corresponding tolerances for normal‑accuracy, general‑purpose vertical‑spindle turning machines. It does not cover operational/performance tests such as vibration or speed characteristics.

Q: Who typically uses it?

A: Machine tool manufacturers, quality and metrology teams, test laboratories, certification bodies, and end users who need to verify machine geometric accuracy and certify conformance to accepted test conditions.

Q: Is it current or superseded?

A: ISO 13041‑2:2020 is the current second edition (published March 2020) and, per ISO’s review records, this edition has been reviewed and confirmed as current. Users should check their national standards body for any national adoptions or amendments.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 13041 series addressing test conditions for NC turning machines and turning centres; other parts address horizontal spindles, inverted vertical spindles and related accuracy, positioning and speed/interpolation tests.

Q: What are the key keywords?

A: Geometric tests, vertical spindle, NC turning machine, turning centre, tolerances, ISO 230‑1, ISO 230‑7, machine tool metrology.