Overview
ISO 7755-11:2013 is an international standard that specifies the key dimensions for hardmetal burrs of a specific conical shape with a pointed nose, identified as style M. Hardmetal burrs are cutting tools commonly used in machining, metalworking, and precision shaping tasks. This part of the ISO 7755 series defines the main geometric characteristics of the cutting part for these pointed-nose conical burrs, ensuring uniformity and interchangeability across manufacturers and users worldwide.
This standard is essential for manufacturers, tool designers, and end-users who require precise, reliable specifications for conical pointed-nose burrs used in various industries. The document also references ISO 7755-1, which covers tolerances on critical parameters such as cutting diameter and shank dimensions.
Key Specifications
ISO 7755-11:2013 outlines the following primary dimensions for conical pointed-nose burrs (style M):
- Cutting Diameter (d): Defines the diameter of the burr’s cutting part, with sizes ranging in millimeters such as 3, 6, 10, 12, and 16.
- Cutting Edge Length (l): The length of the cutting surface, measured from the flat part of the burr.
- Point Angle (α): The apex angle of the cone, varying between 14° and 30° depending on burr size.
The dimensions are specified to ensure consistent tool performance and compatibility in machining operations. The standard also provides guidelines on measurement practices and references broader tolerance and designation parameters covered in ISO 7755-1.
Additional Information:
- The point angle affects the precision and depth of material removal.
- The document includes an informative annex linking these designations to the ISO 13399 series for cutting tool data representation and exchange, improving digital tool management.
Applications
Conical pointed-nose hardmetal burrs standardized by ISO 7755-11 find practical applications in:
- Precision Machining: Used for detailed shaping, deburring, and contouring in metal, ceramics, composites, and hard materials.
- Die and Mold Making: Ideal for cutting and shaping complex geometries and internal contours.
- Aerospace and Automotive Manufacturing: Employed for surface finishing and edge preparation on components requiring high accuracy.
- Jewelry and Dental Laboratories: Precision tools for engraving, carving, and finishing small parts.
- General Fabrication Workshops: Useful for shaping, cleaning, and removing excess material in various metalworking tasks.
Standardized dimensioning ensures that burrs perform reliably in these exacting scenarios, optimizing tool life and machining quality.
Related Standards
ISO 7755-11:2013 is part of the comprehensive ISO 7755 series dedicated to hardmetal burrs, which includes:
- ISO 7755-1: General specifications covering tolerances, shank dimensions, and designations.
- ISO 7755-2 to ISO 7755-12: Define shapes such as cylindrical burrs, spherical burrs, flame burrs, cone burrs, and more.
- ISO 13399 Series: Provides cutting tool data representation and exchange standards, facilitating digital tool management and compatibility with ISO 7755-11’s designations.
By conforming to these standards, manufacturers and users benefit from globally harmonized tool specifications, improved supply chain efficiency, and enhanced precision in tool selection.
Keywords: ISO 7755-11, hardmetal burrs, conical pointed-nose burrs, cutting tool dimensions, machining burrs, precision cutting tools, tool standardization, ISO 7755 series, industrial burr specifications, cutting diameter, point angle, ISO 13399, metalworking tools.