ISO 8636-1-2000 PDF

Full title and description

Machine tools — Test conditions for bridge-type milling machines — Testing of the accuracy — Part 1: Fixed bridge (portal-type) machines. This International Standard defines standardized test conditions, geometric and machining tests, and tolerance guidance for verifying the accuracy and repeatability of fixed-bridge (portal-type) milling machines with moving tables and fixed double columns.

Abstract

ISO 8636-1:2000 specifies geometric tests, machining tests and checks for the accuracy and repeatability of positioning of numerically controlled axes for general-purpose, normal-accuracy bridge-type milling machines with a fixed bridge (portal-type). The standard gives terminology and axis designation, measurement conventions and recommended test sequences, and it refers to ISO 230 series documents for installation and measurement practice.

General information

• Status: Published; under review (replacement draft under development).
• Publication date: February 2000 (Edition 2, published 2000-02).
• Publisher: ISO (International Organization for Standardization).
• ICS / categories: 25.080.20 (Boring and milling machines).
• Edition / version: Edition 2 (2000). A later ISO DIS/FDIS to revise Part 1 has been published as a draft for approval (edition 3 in development).
• Number of pages: 36.

Scope

Applies to bridge-type (portal-type) milling machines with a fixed bridge and moving table (fixed double-column configuration). The document is restricted to verification of machine accuracy (geometric and positioning accuracy, machining tests) and does not cover machine operational characteristics (vibration, noise, speeds, feeds). Tests and tolerances are specified with reference to ISO 230-1 and ISO 230-2 (installation and measurement methods). Test selection and exact tolerance agreement are normally determined by supplier and user.

Key topics and requirements

• Standardized nomenclature and axis designation for portal/bridge milling machines.
• Geometric tests (straightness, squareness, parallelism of axes and components).
• Machining tests (e.g., slab milling, face milling) to assess achievable flatness and surface deviations.
• Tests for accuracy and repeatability of NC linear and rotary axes (positioning and return-to-position).
• Measurement conditions, environmental/warm-up recommendations and references to ISO 230 series for instrumentation and procedures.
• Reporting format and suggested tolerance classes for general-purpose, normal-accuracy machines.

Typical use and users

Used for factory acceptance testing (FAT), site acceptance testing (SAT) and quality assurance by machine tool manufacturers, OEMs, metrology engineers, workshop managers and maintenance teams. Typical users include designers and builders of portal milling machines, procurement and inspection teams who need to verify geometric accuracy and NC axis performance, and service/calibration providers.

Related standards

Often used together with the ISO 230 series (ISO 230-1, ISO 230-2, ISO 230-7) for installation, measurement methods and axis positioning checks; the standard also references general machine-tool terminology such as ISO 841. Part 2 of ISO 8636 covers travelling-bridge (gantry-type) machines and has been revised more recently.

Keywords

bridge-type milling machines, portal milling, portal-type, accuracy tests, geometric tests, machining tests, NC axis positioning, ISO 8636-1, machine-tool testing, ISO 230.

FAQ

Q: What is this standard?

A: ISO 8636-1:2000 is an International Standard that specifies test conditions and procedures for checking the accuracy of fixed-bridge (portal-type) milling machines.

Q: What does it cover?

A: It covers geometric and machining tests, axis accuracy and repeatability checks, axis designation and measurement conventions for fixed-bridge portal milling machines with moving tables and fixed double columns. It does not address machine running characteristics such as vibration or speed performance.

Q: Who typically uses it?

A: Machine tool manufacturers, QA/metrology engineers, commissioning and acceptance-test teams, maintenance and calibration specialists, and procurement/inspection personnel.

Q: Is it current or superseded?

A: The 2000 edition (Edition 2) remains the published version, but ISO has progressed work on a replacement (DIS/FDIS for Part 1) — Part 1 is under revision with later draft stages published for approval. Users should check the current ISO catalogue or national standards body for the very latest publication status before use.

Q: Is it part of a series?

A: Yes — ISO 8636 is a multi-part series for bridge-type milling machines; Part 1 covers fixed-bridge (portal) machines and Part 2 covers travelling-bridge (gantry) machines. The series is intended to be used alongside ISO 230 (test code) documents.

Q: What are the key keywords?

A: bridge-type milling, portal milling machine, accuracy testing, geometric tests, machining tests, NC axis repeatability, ISO 8636-1, ISO 230.