BS ISO 3070-2-2016 (2018) PDF

Full title and description

STB BS ISO 3070-2-2016 (2018) — Machine tools — Test conditions for testing the accuracy of boring and milling machines with horizontal spindle — Part 2: Machines with movable column along the X‑axis (floor type). This document is the British adoption (BS ISO) of ISO 3070‑2:2016 and reproduces the international standard’s test methods, geometric and spindle tests, and tolerance guidance for general‑purpose horizontal‑spindle boring and milling machines.

Abstract

Specifies, with reference to ISO 230‑1, ISO 230‑7 and ISO 230‑2, the geometric tests, spindle tests and NC positioning tests for horizontal‑spindle boring and milling machines with a movable column along the X‑axis. It gives test arrangements, measurement procedures and the tolerances applicable to machines of general‑purpose, normal accuracy. The standard deals only with verification of accuracy, not operational performance tests (vibration, speeds, feeds).

General information

• Status: Published / Confirmed (international standard; adopted as a national/BS publication).
• Publication date: ISO original: August 2016 (ISO 3070‑2:2016). British adoption (BS ISO): 18 July 2018.
• Publisher: International: ISO (International Organization for Standardization); National adoption: BSI (British Standards Institution).
• ICS / categories: 25.080.20 — Boring and milling machines.
• Edition / version: ISO edition 4 (2016). National text published as BS ISO 3070‑2:2016 (published by BSI in 2018).
• Number of pages: ISO PDF: 53 pages (ISO text); BS national publication listed as 62 pages (BS cover/foreword and national material can change pagination).

Scope

Applies to horizontal‑spindle boring and milling machines that have a column movable along the X‑axis (floor type) and defines test conditions to verify machine geometric accuracy, spindle performance and repeatability/accuracy of numerically controlled positioning. It specifies test set‑ups, measurement points, allowable tolerances for general‑purpose accuracy class machines and notes exclusions (operational checks such as vibration or speed/feed characterisation are outside its scope).

Key topics and requirements

• Definitions of machine configuration and axes for floor‑type machines with movable column (X, Y, Z, W, R, B axes where applicable).
• Geometric tests (straightness, squareness, parallelism, angular errors) and measurement procedures.
• Spindle tests (run‑out, axial and radial errors) and requirements for accessory heads (see annex).
• Tests for NC positioning accuracy and repeatability, including recommended test lengths, speeds and tolerance classes for general‑purpose machines.
• References and linkage to ISO 230 series test codes (notably ISO 230‑1, ISO 230‑2 and ISO 230‑7) for broader machine‑tool testing context.

Typical use and users

Used by machine‑tool manufacturers, inspection and test laboratories, factory acceptance and commissioning teams, quality engineers, and standards committees to perform acceptance, verification and routine accuracy checks on horizontal spindle boring and milling machines of the floor/movable‑column type. It is employed during factory acceptance testing, installation verification, and comparative benchmarking of machine accuracy.

Related standards

Closely related to other parts of the ISO 3070 series (for example ISO 3070‑1 for machines with fixed column and movable table) and to the ISO 230 test‑code series (ISO 230‑1, ISO 230‑2, ISO 230‑7). It also cross‑references ISO 17543 (accessory heads) for specific head test conditions. Users should consult these documents when implementing a full verification program.

Keywords

Machine tools, boring machines, milling machines, horizontal spindle, movable column, floor type, accuracy testing, geometric tests, spindle tests, NC positioning, ISO 3070‑2, BS ISO 3070‑2.

FAQ

Q: What is this standard?

A: An ISO international standard (adopted nationally as a BS publication) that gives test conditions and tolerances for verifying the accuracy of horizontal‑spindle boring and milling machines with a movable column (floor type).

Q: What does it cover?

A: Procedures for geometric and spindle testing, and tests for checking NC positioning accuracy and repeatability; it provides measurement methods and tolerance guidance for general‑purpose accuracy machines. It does not cover operational performance tests such as vibration or speed/feed characterisation.

Q: Who typically uses it?

A: Machine‑tool manufacturers, acceptance and commissioning teams, test laboratories, quality/control engineers and anyone responsible for verifying the dimensional and positional accuracy of floor‑type boring and milling machines.

Q: Is it current or superseded?

A: The ISO original was published in August 2016 (ISO 3070‑2:2016). The BS adoption was published 18 July 2018; users should check national catalogues for the current status but the ISO record shows the 2016 edition as the current published edition.

Q: Is it part of a series?

A: Yes — it is Part 2 of the ISO 3070 series dealing with horizontal‑spindle boring and milling machines; Part 1 covers machines with fixed column and movable table, and related guidance is provided in the ISO 230 machine‑tool test‑code series.

Q: What are the key keywords?

A: Boring and milling machines, horizontal spindle, movable column, floor type, accuracy testing, geometric tests, spindle tests, NC positioning, ISO 3070‑2, BS ISO.