GB/T 46976-2026Balancing of rotating tools and tool systems (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document adopts ISO 16084:2017 "Dynamic balancing of rotary tools and tool systems".

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Cutting Tools.

1 Scope

This document specifies the requirements and calculations for allowable residual imbalance of individual rotary tools and tool systems for static and dynamic imbalance.

This principle ensures that the centrifugal force generated by imbalance during rotation will not damage the spindle bearing, thus preventing adverse effects on the machining process, tool life, and workpiece quality.

Causes damage.

Note 1.The tools and tool systems in this document include hollow cone interfaces (HSK) with flanged contact surfaces conforming to ISO 12164-1 and ISO 12164-2.

ISO 26622 series modular tapered joints with steel ball tension, ISO 26623 series polygonal tapered joints with flange contact surfaces, ISO 7388-1, the 7.24 conical interfaces of ISO 7388-2, ISO 9270-1, and ISO 9270-2 each have their own operating speeds.

This document defines a modular tool system, including a process description and calculation for balancing the components and assembly tool systems therein.

This document specifies the tool shank clamping displacement and its effect on the balancing process. Clamping displacement can occur between the tool or tool system and...

Machine tool spindles may also change during the assembly of modular tool systems (e.g., tool changes).

Note 2.Unfavorable process or system conditions (e.g., local resonance of the mechanical structure caused by a specific rotational speed) or design and machine tool-related technical conditions (e.g., shaft) the extension length, confined space conditions, vibration-sensitive equipment, clamping devices, and tool designs can all lead to increased vibration loads and balance requirements.

This depends on the interaction of the individual machine tool and tool spindle system, and cannot be fully covered by standards. In some cases, deviations may be necessary.

The recommended limits are specified in this document.

Note 3.Wear on the shank interface may also cause changes in clamping conditions, thereby worsening runout and balance conditions. These errors cannot be specifically addressed in this document.

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2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

Note. GB/T 6444-2008 Terminology for Mechanical Vibration Balancing (ISO 1925:2001, IDT)

3 Terms and definitions, symbols and abbreviations