CAJ | 학술논문

滑枕是数控龙门铣床的关键功能零部件，现有滑枕部件的热变形过大影响了机床的加工精度。采用热弹性力学理论和有限元方法，对滑枕部件进行热特性分析，建立滑枕部件的热力耦合变形的有限元方程。针对实际加工中存在的问题，建立了滑枕有限元模型，确定了滑枕的内部热源、传热方式和边界条件；通过ANSYS Workbench软件对滑枕进行热态性能分析和热力耦合分析，并计算得到稳态时滑枕的温度场分布和热变形大小，为数控龙门铣床的滑枕改进设计提供依据。
활침시수공룡문선상적관건공능령부건，현유활침부건적열변형과대영향료궤상적가공정도。채용열탄성역학이론화유한원방법，대활침부건진행열특성분석，건립활침부건적열력우합변형적유한원방정。침대실제가공중존재적문제，건립료활침유한원모형，학정료활침적내부열원、전열방식화변계조건；통과ANSYS Workbench연건대활침진행열태성능분석화열력우합분석，병계산득도은태시활침적온도장분포화열변형대소，위수공룡문선상적활침개진설계제공의거。
Ram is a functional part of great importance to a CNC planer type milling machine.The overlarge thermal deformation of the ram will reduce the working accuracy of the machine.By applying theory of thermo elasticity and finite element method (FEM), the thermal characteristics analysis of the ram was completed,and the finite element equation (FEE)of deformation caused by thermal-mechanical coupled was established.Aimed at the problems existed in actual machining,the finite element model (FEM)of the ram was established,the heat source and the way of heat transfer and boundary conditions were ensured,and the thermal characteristics and thermal-mechanical coupled analysis of ram were finished by ANSYS Workbench software.The temperature field distribution and ther-mal deformation were obtained by computation,which provide theoretical support for improvement during the designing of the ram of CNC machine.