This part of ISO 21940 specifies the requirements for the following: This part of ISO 21940 specifies balance acceptance criteria, in terms of residual unbalance, for both directly after balancing and for a subsequent check of the balance quality by the user. For the main typical errors, this part of ISO 21940 lists methods for their reduction in an informative annex.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Balance error sources
4.1 General
4.2 Systematic errors
4.3 Randomly variable errors
4.4 Scalar errors
5 Error assessment
5.1 General
5.2 Errors caused by balancing equipment and instrumentation
5.3 Balance errors caused by component radial and axial runout
5.4 Assessment of balancing operation errors
5.5 Experimental assessment of randomly variable errors
5.6 Experimental assessment of systematic errors
6 Combined error evaluation
7 Acceptance criteria
Annex A Error examples, their identification and evaluation (informative)
ISO 11342 Mechanical vibration — Methods and criteria for the mechanical balancing of flexible rotors13)
ISO 1925 Mechanical vibration — Balancing — Vocabulary11)
ISO 1940-1 Mechanical vibration — Balance quality requirements for rotors in a constant (rigid) state — Part 1: Specification and verification of balance tolerances12)
ISO 11342 Mechanical vibration — Methods and criteria for the mechanical balancing of flexible rotors13)
ISO 1925 Mechanical vibration — Balancing — Vocabulary11)
ISO 1940-1 Mechanical vibration — Balance quality requirements for rotors in a constant (rigid) state — Part 1: Specification and verification of balance tolerances12)
ISO 21940-21 Mechanical vibration — Rotor balancing — Part 21: Description and evaluation of balancing machines