CAJ | 학술논문

床身是机床的重要基础部件，其静动态特性直接决定机床的加工精度与稳定性。针对某缸体曲轴孔加工专用镗床床身，采用UG6．0软件建立其简化后的三维几何模型，然后导入HyperMesh软件分析其静、动态特性，得到了床身的静刚度、前6阶固有频率及振型等信息，通过分析，此床身结构满足机床的使用要求。此外，针对床身的静力分析结果，提出了四种提高床身静刚度的方案。与原方案相比，在床身危险截面处增加一个地脚的方案，使得床身变形减小最显著，减小量为35．81％。研究结果为床身优化设计及性能分析提供有益帮助。
상신시궤상적중요기출부건，기정동태특성직접결정궤상적가공정도여은정성。침대모항체곡축공가공전용당상상신，채용UG6．0연건건립기간화후적삼유궤하모형，연후도입HyperMesh연건분석기정、동태특성，득도료상신적정강도、전6계고유빈솔급진형등신식，통과분석，차상신결구만족궤상적사용요구。차외，침대상신적정력분석결과，제출료사충제고상신정강도적방안。여원방안상비，재상신위험절면처증가일개지각적방안，사득상신변형감소최현저，감소량위35．81％。연구결과위상신우화설계급성능분석제공유익방조。
The lathe bed is the important foundation parts of machine tool ,its static and dynamic characteristics will directly de-cide the machining precision and stability of the machine tool .Aimed to a special boring machine bed for cylinder crankshaft hole machining,simplified three-dimensional geometric lathe bed model was set up in UG 6.0.Then,the lathe bed static and dynamic characteristics were analyzed by using HyperMesh software .Thus,the information of the static stiffness and the first six order natu-ral frequency and vibration mode was get .Through analyzing ,the designed lathe bed structure met the operating requirement of the machine tool.Furthermore,according to the result of static analysis ,four kinds of solutions about raising static stiffness lathe bed were put forward .After comparing and analyzing this four solutions as well as comparing with the original solution , the de-crease of lathe bed deformation was most significant and was up to 35.81%through adding an anchor in the dangerous section of lathe bed.Provides beneficial attempt to optimize the design and performance analysis of lathe bed .