中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2011年
13期
1546-1550
,共5页
滚珠直线导轨副%赫兹弹性接触%弹性梁%滑块裙部变形%有限元分析
滾珠直線導軌副%赫玆彈性接觸%彈性樑%滑塊裙部變形%有限元分析
곤주직선도궤부%혁자탄성접촉%탄성량%활괴군부변형%유한원분석
linear motion guide%Hertzian contact%elastic beam%side face deformation%finite element analysis（FEA）
基于赫兹弹性接触理论和弹性梁理论,建立了一种考虑滑块裙部变形的滚珠直线导轨副垂直刚度模型。通过与文献中滚动直线导轨副垂直刚度试验值进行比较,验证了该模型的有效性。利用有限元技术对由理论模型计算得到的滑块裙部变形量进行验证,二者最大误差不超过3.5%。该模型可以有效描述滑块裙部的变形状态,能够更准确地计算滚珠直线导轨副垂直刚度。
基于赫玆彈性接觸理論和彈性樑理論,建立瞭一種攷慮滑塊裙部變形的滾珠直線導軌副垂直剛度模型。通過與文獻中滾動直線導軌副垂直剛度試驗值進行比較,驗證瞭該模型的有效性。利用有限元技術對由理論模型計算得到的滑塊裙部變形量進行驗證,二者最大誤差不超過3.5%。該模型可以有效描述滑塊裙部的變形狀態,能夠更準確地計算滾珠直線導軌副垂直剛度。
기우혁자탄성접촉이론화탄성량이론,건립료일충고필활괴군부변형적곤주직선도궤부수직강도모형。통과여문헌중곤동직선도궤부수직강도시험치진행비교,험증료해모형적유효성。이용유한원기술대유이론모형계산득도적활괴군부변형량진행험증,이자최대오차불초과3.5%。해모형가이유효묘술활괴군부적변형상태,능구경준학지계산곤주직선도궤부수직강도。
Based on the Hertzian contact theory and elastic beam theory,a theoretical model of the vertical stiffness of preloaded linear motion guide considering the flexibility of the carriage was established.By comparing the calculated vertical rigidity of the linear motion guide with the measured results proposed in a literature,the effectiveness of the proposed theoretical model was verified.The validation of the side face deformations were verified through FEA.With relative errors less than 3.5%,the calculated outward carriage deformations match the FEA results well.Clearly,the theoretical model can deal with the vertical stiffness of preloaded linear motion guide more accurately compared with the present models.
