CAJ | 학술논문

为了解决大直径菲涅尔透镜模具加工机床的加工稳定性、精度难以保证的问题,基于ANSYS Workbeach软件,对机床整体进行静动态分析. 首先,通过静态分析得到大直径菲涅透镜模具加工机床整机的薄弱环节;然后,利用模态分析法得到机床整机前六阶的模态振型并分析了机床结构的模态频率及振型之间的关系. 分析结果表明:横梁稳定性较低,为机床的薄弱环节,横梁内部x向筋板需要加强;机床最大位移发生在横梁位置,变形主要发生在地脚,需要改善优化地脚数量与布局. 改进方案为:横梁筋板厚度不变,将内部原垂直构成的十形结构筋板改为V型结构;箱体前段需要增加3个地脚并成等距排列以提供支持力,从而加强机床刚度.
위료해결대직경비열이투경모구가공궤상적가공은정성、정도난이보증적문제,기우ANSYS Workbeach연건,대궤상정체진행정동태분석. 수선,통과정태분석득도대직경비열투경모구가공궤상정궤적박약배절;연후,이용모태분석법득도궤상정궤전륙계적모태진형병분석료궤상결구적모태빈솔급진형지간적관계. 분석결과표명:횡량은정성교저,위궤상적박약배절,횡량내부x향근판수요가강;궤상최대위이발생재횡량위치,변형주요발생재지각,수요개선우화지각수량여포국. 개진방안위:횡량근판후도불변,장내부원수직구성적십형결구근판개위V형결구;상체전단수요증가3개지각병성등거배렬이제공지지력,종이가강궤상강도.
In order to solve the problem of machining stability and accuracy of the large diameter Fresnel lens mold processing machine, the static and dynamic analysis of the whole machine was conducted based on ANSYS Workbeach software, providing reference for optimizing the design of machine tool structure. First of all, through the static analysis, the weak link of large diameter Fresnel lens mold processing machine was obtained;Then, modal shape of the first six order was acquired by modal analysis method, and the relationship between the above structure modal frequencies and mode shapes was researched. The results show that beam stability is low and weak, and the beam front inner X stiffened plate needs to be strengthened. The maximum displacement occurred in the beam position, and the deformation mainly occurred in the anchor, so it is need to improve the quantity and layout of the anchor. The improved scheme is that keeping the beam reinforcement plate thickness constant, changing the inside stiffened plate composed of ten-vertical structure into a V-shaped structure. The body paragraph need to be increased three anchors into isometric arrangement to provide support for strengthening stiffness of the machine tool.