滚珠丝杠选型计算.pdf

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1、B精密转造滚珠丝杠SBCPrecisionRolledBallScrew
B-1精密转造滚珠丝杠PRECISIONROLLEDBALLSCREW估算速度CalculationSpeed容许等级PToleranceClassP转速RotationalSpeed:※d0:丝杆直径ScrewDiameter临界速度CriticalRotationalSpeedn[min-1]crfcrs安全系数SafetyFactor标志indexp容许值Permissible支撑方法[参考seeD-3]图表Diagram临界速度ncr与公称直径和非支撑螺母的最大长度/cr有关Crit

2、icalspeed(1storder)ncrasafunctionofnominal-od0andthemax.unsupportedscrewlength/cr.注：Remarks1)最大转速就是容许范围内的最大速度。容许转速是n/和ncrp的最小值。Therotationalspeedlimitistheresultofthemaximumperimissibleballspeed.Thepermissiblespeedisthelowestofthevaluesn/andncrp.建议根据客户要求提供支撑方式。Supportrecommendationonreq

3、uest.精密转造滚珠丝杠PRECISIONROLLEDBALLSCREW扭曲负荷计算CalculationBuckling扭曲负荷Buckling型号Example:6310支撑方法Support3图解Diagram根据型号与运行的最大长度/c来确定最大扭曲负载Fc。MaxloadFcasafunctionofsizeandmax.columnlength/c*扭曲负载Buckling丝杠受径向负载时，超载时的轴变形弯曲，这种现象叫做扭曲。产生扭曲的最小径向负载，称为扭曲负载。因此客户选型时必须注意，应在允许范围内选定丝杠直径。Compressionloads(wh

4、ereforcepushesonbearingandsupport)tendtocausethescrewshafttobend,requiringlargerscrewdiametersthanforcomparablyloaddedtensilesituations.Wherepossilble,applicationsshoudbedesignedfortensionloading(whereforcepullsonbearingandsupport.)标志indexp容许值permissible精密转造滚珠丝杠PRECISIONROLLEDBALLSCREW寿

5、命计算CalculationLIfe根据负荷计算寿命Lifeasafunctionofload1605(无间隙型Non-Backlash)4010(间隙型Backlash)160540201605(间隙型Backlash)40402002(间隙型Backlash)40102005(间隙型Backlash)50202525(间隙型Backlash)502025055010(间隙型Backlash)3205(间隙型Backlash)501025106310(间隙型Backlash)251063203210(间隙型Backlash)8010(间隙型Backlash)4005

6、(间隙型Backlash)63103210801040058020(间隙型Backlash)例32208020尺寸要求注NotesL=6[revs]根据公式计算额定寿命Fm参考seeD-810DIN69051/2x10L6[revs]10=NominallifeexpectancytoDIN69051/2x10D-2至D-9页的计算公式和图表是估测算值。如需精确计算，请SBC与联系。ThecalculationanddiagramsonpagesD-2~9onlyapplyasanapproximation.Pleasecontactusifandaccurateca

7、lculationisrequired精密转造滚珠丝杠PRECISIONROLLEDBALLSCREW寿命计算CalculationLifeMounting额定寿命LifeExpectancy冲击负载LoadImpact如需特殊径向负载，请与SBC联系。最佳条件OptimumIncaseofradialloadspleasecontactus安装公差MountingTolerances额定寿命ModifiedLifeInRevolutions平均转数EquivalentRotationalSpeed[rev]平均负载[N]根据时间计算Modified