ISO 17485-2006 伞形齿轮.ISO精密系统

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                   【英文标准名称】:     Bevel gears - ISO system of accuracy            【原文标准名称】:     伞形齿轮.ISO精密系统            【标准号】:     ISO 17485-2006            【标准状态】:     现行            【国别】:     国际            【发布日期】:     2006-06    【实施或试行日期】: 【发布单位】: 国际标准化组织(IX-ISO)【起草单位】: ISO/TC 60【标准类型】: ()【标准水平】: ()【中文主题词】: 伞形齿轮;伞齿轮齿系;分类;定义;偏差;齿轮副;齿轮参数;齿轮;传动装置;准双面齿轮对;准双曲面齿轮;加工公差;测量方法;精密度;特性;齿轮齿;公差(测量)【英文主题词】: Bevel gears;Bevel-gear-tooth system;Classification;Definitions;Deviations;Gear pairs;Gear parameters;Gear wheels;Gearing;Hypoid gear pair;Hypoid gears;Machining tolerances;Methods for measuringrecisionroperties;Teeth of gears;Tolerances (measurement)【摘要】: This International Standard establishes a classification system that can be used to communicate geometrical accuracy specifications of unassembled bevel gears, hypoid gears, and gear pairs. It defines gear tooth accuracy terms and specifies the structure of the gear accuracy grade system and allowable values.This International Standard provides the gear manufacturer and the gear buyer with a mutually advantageous reference for uniform tolerances. Ten accuracy grades are defined, numbered 2 to 11 in order of decreasing precision. Equations for tolerances and their ranges of validity are provided in 5.4 for the defined accuracy of gearing. In general, these tolerances cover the following ranges:1,0 mm is mmn ^ 50 mm 5 < z < 4005 mm < dT ^ 2 500 mm wheredT     is the tolerance diameter; mmn is the mean normal module; z       is the number of teeth.See Clause 6 for required and optional measuring methods. As tolerances are calculated from the actual dimensions of a bevel gear, tolerance tables are not provided. In order to provide an overview, example values of tolerances and graphs are given in Annex A.This International Standard does not apply to enclosed gear unit assemblies, including speed reducers or increasers, gear motors, shaft mounted reducers, high speed units, or other enclosed gear units manufactured for a given power, speed, ratio or application.Gear design is beyond the scope of this International Standard. The use of the accuracy grades for the determination of gear performance requires extensive experience with specific applications. Therefore, the users of this International Standard are cautioned against the direct application of tolerance values to a projected performance of unassembled (loose) gears when they are assembled.Tolerance values for gears outside the limits stated in this International Standard will need to be established by determining the specific application requirements. This could require the setting of a tolerance other than that calculated by the formulas in this International Standard.【中国标准分类号】: J17【国际标准分类号】: 21_200【页数】: 32P.;A4【正文语种】: 英语