ISO 7755-8:2013

Overview

ISO 7755-8:2013 is an international standard published by the International Organization for Standardization (ISO) that specifies the main dimensions of the cutting part for hardmetal flame burrs, designated by the symbol H. As part of the broader ISO 7755 series-dedicated to standardizing hardmetal burrs-this part focuses exclusively on flame-shaped burrs widely used in precision machining and deburring tasks. The standard ensures consistency in dimensions to promote interchangeability, quality control, and optimized tool performance.

This second edition, published in 2013, replaces the earlier 1984 version with minor revisions. It complements ISO 7755-1, which covers general specifications including tolerances and shank details, emphasizing the critical parameters needed for flame burrs.

Key Topics

• Cutting Part Dimensions: ISO 7755-8:2013 defines essential cutting part dimensions such as the cutting diameter, profile radius, and cutting edge length. These parameters ensure accurate manufacturing and compatibility in industrial applications.

• Symbol Designation: The flame burr is symbolized by "H" within the ISO 7755 series, enabling straightforward identification alongside other styles like cylindrical or spherical burrs.

• Shape Variants: The standard includes allowances for flame burrs manufactured with either a flat or pointed nose, accommodating different machining requirements.

• Dimensional Specifications:

  • Cutting diameter (d)
  • Profile radius (R)
  • Cutting edge length (l)

  Dimensions range from small sizes like 3 mm diameter with a 0.8 mm profile radius, up to larger sizes like 16 mm diameter with a 2.5 mm profile radius.

• Relationship to ISO 13399: Annex A details the mapping between ISO 7755-8 designations and the ISO 13399 series for cutting tool data representation, facilitating digital tool data exchange and integration into modern manufacturing systems.

Applications

ISO 7755-8:2013 flame burrs are pivotal in industries requiring precise shaping, finishing, and deburring of metal and hard materials. Common applications include:

• Metalworking: Removing burrs and sharp edges from machined components made of steel, stainless steel, and other hard metals.
• Tool and Die Making: Fine detailing and edge preparation of molds and dies, where precise dimension control is critical.
• Aerospace and Automotive Manufacturing: Surface finishing tasks that demand consistent burr dimensions for component integrity and safety.
• Jewelry and Watchmaking: Delicate machining of small components involving intricate flame-shaped burrs for fine surface treatment.
• Dental and Medical Devices: Precision machining of medical instruments and implants requiring exact burr dimensions to ensure performance and safety.

The standardized dimensions facilitate automated tool selection, supplier interchangeability, and quality assurance in manufacturing processes.

Related Standards

ISO 7755-8:2013 is part of a comprehensive series on hardmetal burrs, including:

• ISO 7755-1: General specifications covering tolerances, shank dimensions, and designation rules applicable to all burr types.
• ISO 7755-2 to ISO 7755-12: Specifications for various burr shapes, such as cylindrical (style A), spherical (style D), oval (style E), conical (style L), and others, providing complete coverage for cutting tool standardization.
• ISO 13399 Series: Cutting tool data representation and exchange standards, linked to ISO 7755-8 through detailed designation cross-references, enabling digital manufacturing connectivity.

By adhering to ISO 7755-8:2013, manufacturers and users ensure compatibility with these related standards, promoting harmonization across tooling and machining operations.

Keywords: ISO 7755-8, hardmetal burrs, flame burrs, flame-shaped burr, cutting tool standard, burr dimensions, burr profile radius, tool data exchange, ISO 13399, precision machining, deburring tool, cutting edge length, metalworking tools, manufacturing standards.