Following best practices is crucial for compliance with SN EN ISO 1101:2017, ensuring your organization meets geometrical tolerancing standards and is prepared for audits.

Best practices at a glance

The following checklist outlines essential best practices for complying with SN EN ISO 1101:2017. These practices address various aspects of geometrical tolerancing, including form, orientation, location, and run-out tolerances, aligning with the relevant clauses of the standard.

The practices

1. Implement Standardized Symbols: Ensure the use of standardized symbols for geometrical tolerancing as per ISO 1101:2017. This is vital to avoid misinterpretation and ensures clarity in communication among engineers and manufacturers. Refer to Clause 5 for detailed guidelines on symbols.

2. Define Tolerance Zones Clearly: Specify tolerance zones for all geometrical elements in technical drawings. Clear definitions minimize production errors and ensure that parts fit together correctly, as emphasized in Clause 6 of ISO 1101:2017.

3. Utilize 3D CAD Models for Accuracy: Incorporate 3D CAD models in the design process to visualize and validate geometrical tolerances. This practice enhances precision and helps in identifying potential issues early in production, supporting compliance with ISO 1101:2017's requirements for geometrical dimensioning.

4. Educate Staff on Geometrical Tolerancing: Conduct training sessions for team members involved in design and manufacturing on the principles of geometrical tolerancing. A well-informed workforce can better adhere to ISO 1101:2017 standards, reducing the risk of non-compliance.

5. Regularly Review Drawing Specifications: Establish a routine for reviewing and updating drawing specifications to align with the latest requirements of ISO 1101:2017. This practice ensures ongoing compliance and reflects any changes in industry standards or organizational processes.

6. Document Defaults and Exceptions: Clearly document any defaults or exceptions in tolerancing practices in your technical product specifications. This transparency is critical for maintaining compliance and providing auditors with necessary information, as outlined in Clause 8.

7. Supplement Information for Complex Geometries: When dealing with complex geometries, provide supplementary information to clarify tolerancing requirements. This could include detailed notes or additional drawings, which align with the guidelines set forth in ISO 1101:2017.

8. Plan for Movable Assemblies: When designing movable assemblies, ensure that tolerances are specified to accommodate movement and functionality. This practice is essential to avoid assembly issues and is discussed in Clause 7 of the standard.

Audit preparation checklist

• Implement Standardized Symbols
• Define Tolerance Zones Clearly
• Utilize 3D CAD Models for Accuracy
• Educate Staff on Geometrical Tolerancing
• Regularly Review Drawing Specifications
• Document Defaults and Exceptions
• Supplement Information for Complex Geometries
• Plan for Movable Assemblies

Next steps

To deepen your understanding of how to comply with ISO 1101:2017, consider pursuing training courses, acquiring implementation guides, or purchasing the standard itself for comprehensive insights.