CAJ | 학술논문

通过CATIA对行星滚柱丝杠机构进行三维建模，采用有限元仿真技术分析了机构的6阶固有频率，得到了各阶模态主振型图，分别研究了支承方式、螺母工作位置、离心力等因素对机构固有频率的影响。研究表明，采用两端固定支承的行星滚柱丝杠固有频率较高，适宜在高速工况下使用；螺母工作行程越大，机构整体抗振性能越低，承受的极限转速也越小；机构高速运转时产生的离心力将导致零部件的变形增大，降低其传动精度，在具有高精度要求的工况下，不宜采用过高转速。
통과CATIA대행성곤주사강궤구진행삼유건모，채용유한원방진기술분석료궤구적6계고유빈솔，득도료각계모태주진형도，분별연구료지승방식、라모공작위치、리심력등인소대궤구고유빈솔적영향。연구표명，채용량단고정지승적행성곤주사강고유빈솔교고，괄의재고속공황하사용；라모공작행정월대，궤구정체항진성능월저，승수적겁한전속야월소；궤구고속운전시산생적리심력장도치령부건적변형증대，강저기전동정도，재구유고정도요구적공황하，불의채용과고전속。
Three-dimensional model of planetary roller screw is built by the CATIA software .Through the finite element simulation , the planetary roller screw's six order inherent frequencies are calculated and vibration shape diagrams are obtained .The influences caused by different supporting patterns ,working position of nut and centrifugal force are discussed .Through these analysis ,it can be obtained that the planetary roller screw has higher inherent frequencies using two ends fixed supporting ,the mechanism can be used in high-speed working condition for the best ;the longer of nut's working stroke , the lower of mechanism's anti-vibration performance ;the centrifugal force during rotating can increase the deformation of parts , which can decrease the transmission accuracy of planetary roller screw ,and in the case of high precision ,it is inappropriate to adopt an exorbitant speed .