標準號：ISO/TR 27609-2007
中文標準名稱：手持工具的振動.研磨機振動測量方法.系列試驗評估
英文標準名稱：Vibration in hand-held tools — Vibration measurement methods for grinders — Evaluation of round-robin test
標準類型：Z32
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：Z32
國際標準分類號：13.160;25.140.10
適用范圍：This Technical Report presents an evaluation of a round-robin test of vibration measurement methods fordetermining vibration in hand-held grinders. The aim of the round-robin test was to establish a test methodthat could meet the requirement of ISO 20643 for measurement of vibration emissions in three directions, foraccordance with the planned-to-be-revised ISO 8662-4.The value obtained by such a test method must correspond to the highest vibration values likely to occurunder typical and normal working conditions of the machine, i.e. the upper quartile of the vibration in real use.This acknowledges that the upper boundary of “typical and normal” conditions can be exceeded by someconditions of “real use”.Vibration at grinding can mainly be divided into vibration caused by unbalance of the grinding wheel andprocess vibration generated by the contact between the grinding wheel and the work piece. The unbalancepart has been shown to be the greater of the two and ISO 8662-4 is based on this. In this Technical Report,the test method consists of a number of averaged measurements using an unbalance disc, with an unbalancecorresponding to the upper limit of the unbalances found among real grinding wheels.Whereas ISO 8662-4 covers all types of hand-held grinders, the round-robin test presented in this TechnicalReport was based on grinding with depressed centre-wheels, one of the most common grinding applications.