热装配失效计算分析  

Calculation and Analysis of Thermal Assembly Failure

作　　者：李宏伟[1,2] 国旭华[1,2] 毕泗元[1,2] 刘心藜 祝国荣[1,2] 

机构地区：[1]北京北方车辆集团有限公司工艺技术中心,北京100072 [2]北京市特种车辆部件先进制造与评估工程技术研究中心,北京100072

出　　处：《新技术新工艺》2015年第12期45-48,共4页New Technology & New Process

摘　　要：热装配是过盈联接常用的一种方法,热装后,包容件与被包容件均会产生变形,这种变形既包含热变形也包含挤压变形。过盈量越大,挤压变形越大,并逐渐成为变形主要因素。挤压变形不仅影响包容件与被包容件接合区,在接合区、非接合区及过渡区域,表面变形并产生连续变化,常常造成不均匀变形,不规则尺寸,尤其对于形状呈非对称性的零件。当接合区或过渡区存在配合表面时,变形将导致装配失效。应用三维实体建模Pro/E技术,能够较好的计算分析变形,及早发现影响配合的变形位置及变形量,指导设计避免热装配变形失效。Pro/E计算可以成为热装配设计的一种有效方法。Hot assembly is a commonly used method in interference fit joint. Alter hot assemDly,lneluslve anO to De In- clusive of parts will produce deformation, which contains both the thermal deformation also contains extrusion deformation. The greater the interference assembly, the greater the extrusion deformation values and so become the main factors, extrusion deformation Both influence contact zone, also affect the transitional region, deformation will produce continuous variation in this area. If the part is asymmetric,often caused uneven deformation and irregular sizes, when there is a matching surface in contact area and transitional area, deformation will lead to assembly failure. Application Pro/E 3D entity modeling technolo- gy, can better analysis calculation of deformation,discover deformation zone and deformation values, to guide the design to avoid heat assembly failure. Pro/E calculation can be an effective method of a thermal assembly.

关 键 词：挤压变形 装配 计算 有限元 

分 类 号：TG751.2[金属学及工艺—刀具与模具]