CAJ | 학술논문

以滚动直线导轨副可靠性试验台龙门为研究对象，对其进行了结构分析与优化，得到了结构比较合理的龙门。使用Ansys有限元分析软件对其结构进行模态分析，识别出其结构设计中的薄弱环节，在此基础上，以提高龙门低阶固有频率和降低龙门质量为优化目标对其结构进行了改进。通过三步改进，得到最终的综合优化方案并对其进行静力校核，优化后的龙门与原模型相比，前四阶固有频率均得到提高，其中一阶固有频率提高了6.16%，龙门质量下降了2.67%，龙门最大变形位移降低了1.9%，且受力情况得到改善，达到了预期的目标，同时也为滚动直线导轨副可靠性试验台其他部件的结构设计提供了参考依据。
이곤동직선도궤부가고성시험태룡문위연구대상，대기진행료결구분석여우화，득도료결구비교합리적룡문。사용Ansys유한원분석연건대기결구진행모태분석，식별출기결구설계중적박약배절，재차기출상，이제고룡문저계고유빈솔화강저룡문질량위우화목표대기결구진행료개진。통과삼보개진，득도최종적종합우화방안병대기진행정력교핵，우화후적룡문여원모형상비，전사계고유빈솔균득도제고，기중일계고유빈솔제고료6.16%，룡문질량하강료2.67%，룡문최대변형위이강저료1.9%，차수력정황득도개선，체도료예기적목표，동시야위곤동직선도궤부가고성시험태기타부건적결구설계제공료삼고의거。
Taking the gantry of rol er linear guide reliability test rig as the researching object, its structure is analyzed and optimized so as to get the reasonable structure of gantry. The modal analysis of the gantry is used to analyze its dynamic structure and find out its weak points, then its structure is modified, in order to increase the natural frequency and decrease its weight. It is Improved by three steps and the integrated optimization scheme is determined, then the static check is made on it. The results of the integrated optimal design show that the first four natural frequencies al increase and the first natural frequency of the redesigned bed increases by 6.16%and the weight reduces by 2.67%.Meanwhile,the stiffness increases by 3.18%and stress distribution gets better. This study achieves good effect expected and provides the reference for the optimization of the other parts of the rol er linear guide reliability test rig.