Overview
ISO 10889-7:2016 is an international standard developed by the International Organization for Standardization (ISO) that specifies the dimensions, designations, and technical delivery conditions for tool holders with cylindrical shanks, specifically those of Type F with a taper seat. This standard forms part of the broader ISO 10889 series, which outlines requirements for tool holders designed for machine tools with non-rotating tools, predominantly used in turning machines.
The standard ensures uniformity and interchangeability in tool holders used for taper shanks with a flat tang, promoting compatibility and quality across manufacturing and tooling industries. It also includes guidelines for non-standardized tool holders with taper seats to ensure their compliance with relevant specifications.
Key Topics
- Dimensions and Tolerances
ISO 10889-7:2016 provides detailed dimensions in millimeters for Type F tool holders with taper seats and cylindrical shanks. It references ISO 8015 for tolerancing principles and mandates tolerance classes “m” and “H” as per ISO 2768-1 and ISO 2768-2 for linear, angular, and geometrical tolerances.
- Designation System
The standard proposes a structured designation format to identify tool holders, including the type (F), nominal diameter, taper seat type (e.g., Morse Taper BIK), and surface hardening indication. For example:
Tool holder [ISO 10889-7](/search?q=ISO%2010889-7) - F - 40 - MT-BIK 3 H indicates a Type F tool holder with a 40 mm nominal diameter, Morse taper seat type BIK 3, and hardened contact surface.
- Technical Delivery Conditions
Requirements include hardening the taper socket to a surface hardness of 56 HRC or greater with a minimum hardened depth of 0.5 mm, and classifying taper angle tolerances as AT5 per ISO 296. Tool holders may also feature hardened contact surfaces to improve durability.
- Compatibility and Symbol Mapping
Annex A in the standard provides correlations between ISO 10889-7 designation symbols and the ISO 13399 data representation series, facilitating digital data exchange and interoperability in tooling management systems.
Applications
- Turning Machines
ISO 10889-7:2016 applies primarily to tool holders used in turning machines where tools are non-rotating but mounted securely with taper seats for efficient machining operations.
- Non-Rotating Tool Holding
The standard supports holding non-rotating tools requiring precise mounting systems that ensure tool stability, accurate positioning, and longevity under machining stresses.
- Machine Tool Industry
Manufacturers of machine tools, tooling suppliers, and quality control professionals utilize this standard for designing, producing, and verifying conformance of tool holders with cylindrical shanks to maintain global interchangeability and tool performance.
- Quality Assurance
The defined dimensional tolerances and technical conditions help reduce tooling errors, improve machining accuracy, and extend tool life, benefiting precision engineering and manufacturing sectors.
Related Standards
- ISO 10889-1
Covers general technical delivery conditions for tool holders with cylindrical shank and location bore, providing foundational requirements referenced by ISO 10889-7.
- ISO 296
Specifies self-holding taper designs for tool shanks such as the Morse taper (BIK), critical to understanding taper seat types in ISO 10889-7.
- ISO 2768-1 and ISO 2768-2
Define general tolerances for linear, angular, and geometrical dimensions without specific tolerance indications, supporting uniform quality characteristics.
- ISO 13399 Series
Standardizes cutting tool data representation and exchange, enabling digital compatibility and standardized communication of tool holder properties as referenced in Annex A of ISO 10889-7.
- ISO 8015
Provides general principles for geometrical product specifications (GPS), essential for interpreting tolerances and design conformity in tool holders.
Keywords: ISO 10889-7, tool holders, cylindrical shank, taper seat, type F, machining tool holders, turning machines, Morse taper, ISO 296, technical delivery conditions, tool holder dimensions, hardened contact surface, machining tooling standards, ISO 13399, cutting tool data exchange.