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Product Code:SAE J390
Title:Dual Dimensioning
Issuing Committee:Technical Standards Board
Scope:This document establishes a uniform method of combining inch-pound units and metric units of measure on the same engineering drawing. In this document 'metric units' means the International System of Units (abbreviated SI) as described in SAE J 916. Herein is guidance for converting from one system to the other while maintaining functional interchangeability.This document covers a dual dimensioning practice that provides both U.S. Customary inch-pound units and SI metric units for all dimensions on the field of drawing. The scope does not include the 'chart method'聴whereby drawings are dimensioned only in SI units聴with conversions to inch-pound units provided in chart form (usually computer generated) on the drawing. Further information on the chart method is found in SAE Handbook Supplement J1066, 'Recommended Guidelines for Company Metrication Programs in the Metalworking Industry.' The purpose of this document is to provide an authoritative guide for uniform application of dual dimensioning on engineering drawings. SAE recognizes that a decision regarding preparation of engineering drawings during metric transition is an individual judgement based on needs and circumstances. While providing this information, SAE takes no official position concerning dual dimensioning. Issuance of this publication should not be construed as advocacy.【英文标准名称】:Machinetools-Testconditionsforsurfacegrindingmachineswithverticalgrindingwheelspindleandreciprocatingtable-Testingoftheaccuracy
【原文标准名称】:机床.设有立式磨床心轴和往复式工作台的平面磨床试验条件.精度试验
【标准号】:BSISO1985-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-07-15
【实施或试行日期】:1998-07-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:直线度测量;公差(测量);性能试验;垂直;磨削;试验条件;准确度;试验设备;测量特征;往复运动部件;机床台;机床部件;磨床;机床;主轴;验证;平面度测量;加工公差;优先尺寸;形状公差
【英文主题词】:Acceptancespecification;Dimensionalmeasurement;Geometric;Grindingmachines;Grindingspindles;Machinetools;Precision;Surfacegrindingmachines;Testing;Testingconditions;Tests;Tolerances(measurement);Treatment;Vertical;Workingprocess
【摘要】:ThisInternationalStandardspecifies,withreferencetoISO230-1,bothgeometricandmachiningtestsongeneralpurpose,normalaccuracy,surfacegrindingmachineswithreciprocatingtableandverticalgrindingwheelspindle.Italsospecifiestheapplicabletolerancescorrespondingtotheabove-mentionedtests.ThisInternationalStandardisnotapplicabletosurfacegrindingmachineswithfixedorrotatingtablesortomachineshavinglongitudinaltraverseofthewheelhead.ThisInternationalStandarddealsonlywiththeverificationofthegeometricaccuracyofthemachine.Itdoesnotapplytothetestingofthemachineoperation(vibrations,abnormalnoises,stick-slipmotionofcomponents,etc.)nortothecheckingofitscharacteristics(suchasspeeds,feeds,etc.),whichshouldgenerallybecheckedbeforetestingtheaccuracy.
【中国标准分类号】:J50
【国际标准分类号】:25_080_50
【页数】:24P.;A4
【正文语种】:英语