Overview
ISO 7755-5:2013 is an international standard developed by the International Organization for Standardization (ISO) that specifies the main dimensions of hardmetal burrs with an oval shape, identified as style E. This standard forms part of the broader ISO 7755 series covering hardmetal burrs used in precision machining and finishing works.
Hardmetal burrs are rotary cutting tools primarily used for shaping, deburring, and surface finishing of metal components. Oval burrs (style E) are designed for applications requiring smooth, elongated cutting profiles, benefiting industries such as aerospace, automotive, mold making, and tool manufacturing.
Key Topics
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Dimension Specifications
ISO 7755-5:2013 defines the critical dimensions of the cutting part of oval hardmetal burrs, including:
- Cutting diameter (d)
- Cutting edge length (l)
- End radius (R), which ensures smooth transition and cutting consistency
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Geometrical Parameters
The standard provides detailed tables and figures illustrating the exact size ranges for these parameters, facilitating uniformity and interchangeability among burr manufacturers and users.
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Integration with ISO 7755 Series
This part is one segment of the ISO 7755 series, which addresses multiple burr shapes such as cylindrical, spherical, flame, and conical burrs. General tolerances concerning helix angle, shank dimensions, and burr designation are referenced from ISO 7755-1.
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Data Representation
ISO 7755-5:2013 aligns its dimension designations with the ISO 13399 series for cutting tool data representation, enabling seamless communication and digital data exchange within CNC programming and tooling databases.
Applications
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Precision Machining
Oval hardmetal burrs are used extensively in fine machining operations to remove burrs and sharp edges without damaging the main workpiece profile.
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Deburring and Surface Finishing
Their elongated profile enables efficient finishing in narrow or contoured spaces, improving overall surface quality on metal parts.
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Tool Manufacturing & Repair
Used in manufacturing jigs, dies, and molds, oval burrs support detailed shaping and finishing work on high-hardness materials.
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Aerospace and Automotive Industries
These sectors require burrs that deliver consistency and durability for removing micro-burrs on precision components, aiding in part reliability and performance.
Related Standards
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ISO 7755-1: General Specifications for Hardmetal Burrs
Covers tolerances on diameter, helix angles, shank sizes, and designation systems applicable to all burr shapes.
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ISO 13399 Series: Cutting Tool Data Representation and Exchange
Offers a standardized framework for defining cutting tool properties, dimensions, and geometry for digital use in tooling software.
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Other Parts of ISO 7755 Series
- Part 2: Cylindrical burrs (style A)
- Part 3: Cylindrical round-nose burrs (style C)
- Part 4: Spherical burrs (style D)
- Part 6 to Part 12 covering various specialized burr shapes
Practical Value
ISO 7755-5:2013 supports manufacturers and end-users by standardizing oval burr dimensions for consistent quality and compatibility across suppliers. Adherence improves tooling selection, optimizes machining processes, and ensures better integration with CNC equipment and digital tooling systems. Utilizing these standardized burrs contributes to enhanced manufacturing precision, reduced rework, and overall operational efficiency in metalworking industries.
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