BS ISO 16084:2017
$215.11
Balancing of rotating tools and tool systems
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 80 |
This document specifies requirements and provides calculations for the permissible static and dynamic residual unbalances of rotating single tools and tool systems. It is based on the guideline that unbalance related centrifugal forces induced by the rotational speed do not harm the spindle bearings, as well as prevent unbalance related impairments of machining processes, tool life and work piece quality.
NOTE 1 Tools and tool systems covered by this document are, for example, those with hollow taper interfaces (HSK) according to ISO 12164‑1 and ISO 12164‑2 , modular taper interface with ball track system according to the ISO 26622 series polygonal taper interface according to the ISO 26623 series , taper 7/24 according to ISO 7388‑1 , ISO 7388‑2 , ISO 9270‑1 and ISO 9270‑2 related to their individual operating speed.
Modular tool systems are another important and complex issue of this document. Calculations and process descriptions for balancing these components and the assembled tool systems are included.
This document is putting an important focus on the possible clamping dislocations of tool shanks and their effects on the balancing procedure. These dislocations can occur between a tool or a tool system and the machine tool spindle (e.g. with every tool change), as well as within a modular tool system during its assembly.
NOTE 2 Unfavourable process or system conditions (e.g. partial resonances of the machine structure generated by particular rotational speeds) or design and machine-related technical conditions (e.g. the projecting length of the axes, narrow space conditions, vibration susceptible devices, clamping devices and tool design) may lead to increased vibration loads and balancing requirements. This is dependent on the individual interaction of the machine and the tool spindle system and cannot be covered by a standard. A deviation from the recommended limit values of this document can be required in individual cases.
NOTE 3 Wear of the shank interfaces may lead to possible variations of the clamping situation and thus to worse run-out and balancing conditions. These errors cannot be specifically addressed in a standard.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 8 | 1 Scope 2 Normative references 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions |
| 10 | 3.2 Symbols and abbreviated terms |
| 13 | 4 Requirements 4.1 General 4.1.1 Clamping inaccuracies 4.1.2 Influence of balancing machines |
| 14 | 4.1.3 Effects and frequent consequences of permissible residual unbalances according to ISO 1940-1 4.1.4 Inherent properties of machine tools and components 4.2 Balancing requirements based on the spindle load 4.2.1 General |
| 17 | 4.2.2 Determination of the balancing requirements |
| 21 | 4.2.3 Measuring accuracy of balancing machines, influence of run-out and repeatability of measuring results |
| 22 | 4.2.4 Application criterion of static and dynamic balancing 4.2.5 Permissible residual dynamic unbalances |
| 27 | 4.2.6 Balancing requirements for tool systems with guidance |
| 29 | 4.2.7 Influence of the HSK (hollow taper shank) on the dynamic unbalance |
| 30 | 4.3 Safety-related unbalance limitations (G40) according to ISO 15641 4.4 Graphic visualization of the balancing requirements |
| 32 | 4.5 Special tools with asymmetric body shapes 5 Balancing of tool systems 5.1 General |
| 34 | 5.2 Balancing of tool system components |
| 36 | 5.3 Influence of the angular orientation of component unbalances 5.4 Influence of clamping dislocations |
| 37 | 5.5 Integration of tool system components balanced according to ISO 1940-1 5.6 Calculation of the permissible rotational speed depending on actual unbalance |
| 38 | 5.7 Determination and calculation of the position of the centre of gravity 5.7.1 Experimental determination of the centre of gravity 5.7.2 Calculation of the centre of gravity of a modular tool system |
| 39 | 5.8 Balancing of tools and components with alternative interfaces 5.9 HSK adapters with rotationally symmetrical tools |
| 40 | 5.10 Remarks for setup and balancing of tool systems |
| 41 | 6 Data representation and exchange |
| 43 | Annex A (informative) Permissible residual unbalances — Theoretical approach and calculation examples |
| 68 | Annex B (informative) Calculation examples of tool systems |
| 73 | Annex C (normative) XML file structure for the documentation of balancing information |
| 75 | Annex D (informative) Fundamental unbalance formula, correlations and practical advice |
| 78 | Bibliography |
