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1、B精密轉(zhuǎn)造滾珠絲杠SBCPrecisionRolledBallScrewB-1精密轉(zhuǎn)造滾珠絲杠PRECISIONROLLEDBALLSCREW估算速度CalculationSpeed容許等級(jí)PToleranceClassP轉(zhuǎn)速RotationalSpeed:※d0:絲桿直徑ScrewDiameter臨界速度CriticalRotationalSpeedn[min-1]crfcrs安全系數(shù)SafetyFactor標(biāo)志indexp容許值Permissible支撐方法[參考seeD-3]圖表Diagram臨界速度ncr與公稱直徑和非支撐螺母的最大長(zhǎng)度/cr有關(guān)Crit
2、icalspeed(1storder)ncrasafunctionofnominal-od0andthemax.unsupportedscrewlength/cr.注：Remarks1)最大轉(zhuǎn)速就是容許范圍內(nèi)的最大速度。容許轉(zhuǎn)速是n/和ncrp的最小值。Therotationalspeedlimitistheresultofthemaximumperimissibleballspeed.Thepermissiblespeedisthelowestofthevaluesn/andncrp.建議根據(jù)客戶要求提供支撐方式。Supportrecommendationonreq
3、uest.精密轉(zhuǎn)造滾珠絲杠PRECISIONROLLEDBALLSCREW扭曲負(fù)荷計(jì)算CalculationBuckling扭曲負(fù)荷Buckling型號(hào)Example:6310支撐方法Support3圖解Diagram根據(jù)型號(hào)與運(yùn)行的最大長(zhǎng)度/c來確定最大扭曲負(fù)載Fc。MaxloadFcasafunctionofsizeandmax.columnlength/c*扭曲負(fù)載Buckling絲杠受徑向負(fù)載時(shí)，超載時(shí)的軸變形彎曲，這種現(xiàn)象叫做扭曲。產(chǎn)生扭曲的最小徑向負(fù)載，稱為扭曲負(fù)載。因此客戶選型時(shí)必須注意，應(yīng)在允許范圍內(nèi)選定絲杠直徑。Compressionloads(wh
4、ereforcepushesonbearingandsupport)tendtocausethescrewshafttobend,requiringlargerscrewdiametersthanforcomparablyloaddedtensilesituations.Wherepossilble,applicationsshoudbedesignedfortensionloading(whereforcepullsonbearingandsupport.)標(biāo)志indexp容許值permissible精密轉(zhuǎn)造滾珠絲杠PRECISIONROLLEDBALLSCREW壽
5、命計(jì)算CalculationLIfe根據(jù)負(fù)荷計(jì)算壽命Lifeasafunctionofload1605(無間隙型Non-Backlash)4010(間隙型Backlash)160540201605(間隙型Backlash)40402002(間隙型Backlash)40102005(間隙型Backlash)50202525(間隙型Backlash)502025055010(間隙型Backlash)3205(間隙型Backlash)501025106310(間隙型Backlash)251063203210(間隙型Backlash)8010(間隙型Backlash)4005
6、(間隙型Backlash)63103210801040058020(間隙型Backlash)例32208020尺寸要求注NotesL=6[revs]根據(jù)公式計(jì)算額定壽命Fm參考seeD-810DIN69051/2x10L6[revs]10=NominallifeexpectancytoDIN69051/2x10D-2至D-9頁的計(jì)算公式和圖表是估測(cè)算值。如需精確計(jì)算，請(qǐng)SBC與聯(lián)系。ThecalculationanddiagramsonpagesD-2~9onlyapplyasanapproximation.Pleasecontactusifandaccurateca
7、lculationisrequired精密轉(zhuǎn)造滾珠絲杠PRECISIONROLLEDBALLSCREW壽命計(jì)算CalculationLifeMounting額定壽命LifeExpectancy沖擊負(fù)載LoadImpact如需特殊徑向負(fù)載，請(qǐng)與SBC聯(lián)系。最佳條件OptimumIncaseofradialloadspleasecontactus安裝公差MountingTolerances額定壽命ModifiedLifeInRevolutions平均轉(zhuǎn)數(shù)EquivalentRotationalSpeed[rev]平均負(fù)載[N]根據(jù)時(shí)間計(jì)算Modified
