GB/T 46976-2026 Balancing of rotating tools and tool systems

Scope

This document specifies the requirements and calculations for the permissible residual imbalance of individual rotating tools and tool systems, both in static and dynamic conditions. The basic principle is that the centrifugal force generated by imbalance in the rotating state should not damage the spindle bearings, and prevent damage to the machining process, tool life, and workpiece quality.
Note 1: The tools and tool systems in this document include hollow taper interfaces (HSK) with flange contact surfaces in accordance with ISO 12164-1 and ISO 12164-2, modular taper interfaces with ball-tensioned connections in the ISO 26622 series, multi-taper interfaces with flange contact surfaces in the ISO 26623 series, and 7:24 taper interfaces in ISO 7388-1, ISO 7388-2, ISO 9270-1, and ISO 9270-2, each with its own operating speed.
This document specifies modular tool systems, including the description and calculation of the balancing process for their components and assembled tool systems.
This document specifies the clamping displacement of tool handles and its impact on the balancing process. Clamping displacement may occur between the tool or tool system and the machine spindle (e.g., during tool change), or during the assembly of modular tool systems.
Note 2: Adverse process or system conditions (e.g., local resonance of mechanical structures caused by specific speeds) or design and machine-related technical conditions (e.g., spindle overhang length, cramped spatial conditions, equipment susceptible to vibration, clamping devices, and tool design) may lead to increased vibration loads and balancing requirements. This depends on the interaction between individual machines and tool spindle systems and cannot be fully covered by standards. In individual cases, it may be necessary to deviate from the limit values recommended in this document.
Note 3: Wear on handle interfaces may also lead to changes in clamping conditions, t

Development Information

Referenced Standards

Adopt standards

Related Standards