ISO 8688-2-1989 PDF

Full title and description

ISO 8688-2:1989 — Tool life testing in milling — Part 2: End milling. This international standard gives recommended procedures for conducting tool-life tests when end milling steel and cast iron workpieces with high-speed steel tools, covering laboratory and production practice and specifying workpiece, tool and machine conditions, cutting fluids, methods for assessing tool deterioration and tool life, and the recording, evaluation and presentation of results.

Abstract

Specifies recommended procedures for tool-life testing in combined/end milling using high-speed steel endmills on steel and cast iron. The standard is intended for tests in which tool deterioration is primarily due to wear and details requirements for test types, cutting conditions, equipment, wear assessment, test procedure, recording and result presentation.

General information

• Status: Published (International Standard; confirmed in a systematic review 2022).
• Publication date: 27 April 1989 (Edition 1, 1989).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.100.20 — Milling tools.
• Edition / version: Edition 1 (1989).
• Number of pages: 26 pages.

(Publication status, edition and page count as recorded by ISO and national distributors.)

Scope

This part of ISO 8688 gives unified, recommended conditions and procedures for tool-life tests in end milling (combined milling operations where end milling predominates) using high-speed steel endmills on steel and cast iron workpieces. It applies to tests used for comparing tools, workpiece materials, cutting parameters or cutting fluids in laboratory or production environments, provided tool deterioration is mainly via wear. Tests where deterioration is dominated by edge breakage or plastic deformation are excluded and require separate study. The standard defines specimen and tool geometry, cutting conditions, cutting-fluid guidance, test equipment and fixturing, criteria and methods for assessing tool deterioration and tool life, and formats for recording and presenting test results.

Key topics and requirements

• Defined test types for end-milling (e.g., slotting, predominance in peripheral or end cutting) and associated schematic configurations.
• Specifications for workpiece materials (steel, cast iron) and preparation to ensure repeatability.
• Tool specifications (high-speed steel endmills), geometry details, and mounting/holding requirements.
• Recommended cutting conditions and ranges (speeds, feeds, depths of cut) appropriate to HSS endmills and the intended wear-dominated tests.
• Guidance on cutting fluids and lubrication conditions to be recorded and controlled during tests.
• Machine and fixturing requirements to minimise extraneous vibration and ensure consistent test conditions.
• Defined criteria and measurement methods for tool deterioration (wear measurement), stopping criteria for tests (tool-life definition) and allowable wear limits.
• Procedures for test execution, data recording, statistical evaluation and standardised presentation of results to permit meaningful comparisons.
• Limitation: applies only where wear is the primary deterioration mechanism; other failure modes require separate methodology.
• Normative references and cross-references to related ISO documents (example normative references included in the standard).

Typical use and users

Used by cutting-tool manufacturers, process and manufacturing engineers, research laboratories, tooling suppliers, quality/standards departments and academic researchers to design and run repeatable tool-life tests for end milling, to compare tool materials and coatings, to evaluate cutting fluids and to set or validate machining parameters under controlled test conditions.

Related standards

Closely related to ISO 8688-1:1989 (Tool life testing in milling — Part 1: Face milling). The standard itself cites normative references such as ISO/R 185 (classification of grey cast iron), ISO/R 683-3 (heat-treated steels) and ISO 1641-1 (end mills and slot drills — dimensions/geometry). Users commonly consult Parts 1 and 2 together when developing comprehensive milling test programs.

Keywords

ISO 8688-2:1989; tool life testing; milling; end milling; high-speed steel endmills; tool wear; cutting conditions; cutting fluids; test procedures; machining standards.

FAQ

Q: What is this standard?

A: ISO 8688-2:1989 is an international standard that specifies recommended procedures for conducting tool-life tests in end milling using high-speed steel endmills on steel and cast iron workpieces.

Q: What does it cover?

A: It covers test types for end milling, definitions of test specimens and tool geometry, recommended cutting conditions and cutting fluids, machine and fixturing requirements, methods and criteria for assessing tool wear and defining tool life, and procedures for recording, evaluating and presenting test results. It is intended for tests where wear is the dominant deterioration mechanism.

Q: Who typically uses it?

A: Cutting-tool manufacturers, machining/process engineers, testing laboratories, tooling and coolant suppliers, and academic researchers use the standard to run comparable, repeatable tool-life tests and to evaluate tools, coatings, workpiece materials and cutting parameters.

Q: Is it current or superseded?

A: As of ISO's last systematic review information, this edition (Edition 1, 1989) was reviewed and confirmed in 2022 and therefore remains the current published version. Users should verify any national adoptions or later revisions before relying on it for regulatory purposes.

Q: Is it part of a series?

A: Yes. ISO 8688 is a multi-part series on tool life testing in milling; Part 1 covers face milling (ISO 8688-1:1989) and Part 2 covers end milling. Parts are intended to be used together for comprehensive milling tool-life testing guidance.

Q: What are the key keywords?

A: Tool life testing, end milling, milling tools, high-speed steel, tool wear, cutting conditions, cutting fluids, ISO 8688-2:1989.