CAJ | 학술논문

针对龙门机床运行过程中在外载荷影响下因刚度不足而产生的震颤问题，利用 Solidworks 建立虚拟样机，导入 Workbench，并按照实际工况施加预应力对模型进行了结构静力、自由模态和预应力模态分析。结果表明，外载荷使机床的固有频率明显减小，振型变大，因此在实际工作中不可忽视外载荷对机床振动的影响。
침대룡문궤상운행과정중재외재하영향하인강도불족이산생적진전문제，이용 Solidworks 건립허의양궤，도입 Workbench，병안조실제공황시가예응력대모형진행료결구정력、자유모태화예응력모태분석。결과표명，외재하사궤상적고유빈솔명현감소，진형변대，인차재실제공작중불가홀시외재하대궤상진동적영향。
Gantry machine produces vibration because of the insufficient stiffness and the impact of external load during the process of operation.We use Solidworks to establish virtual prototype,imports to Workbench and prestresses the five-axis machine tool according to actual condition.Then by doing static structure analy-sis,free modal and prestress modal analysis,External load significantly makes the natural frequency decrease and largens the mode shape.Therefore,the impact of external load on machine's vibration cannot be underesti-mated in the actual work.