摘要
针对对开延伸机匣铣削加工中让刀量较大这一突出问题,采用机械力学模型精确建立了铣削力模型;利用Python脚本语言对有限元软件ABAQUS进行二次开发,将铣削力依次加载到铣削区域各点,实现了机匣外表面铣削加工让刀量的有限元快速仿真预测;优化了支撑体轴向位置,并对初始装夹力的影响进行了分析。与无辅助支撑相比,优化后外表面平均让刀量减少了38.1%。研究结果符合实际,对机匣辅助工装设计和使用提供了数据指导。
In order to solve the problem that the relieving amount was larger in the milling process of the extending casing,the milling force model was established by using the mechanical model.Python scripting language was used in the secondary development of finite element software ABAQUS and the milling forces were loaded into the milling region,thus the finite element simulation and prediction of the relieving amount of the extending casing outside surface was realized.The axial position of the auxiliary support was optimized,and the influence of initial clamping force was analyzed.Compared with without auxiliary support,the average relieving amount of optimized position decreased by 38.1%.The results are consistent with the reality and provides the data guidance for the design and application of the auxiliary tooling.
作者
于金
王胤棋
YU Jin;WANG Yin-qi(School of Mechatronic Engineering,Shenyang Aerospace University,Shenyang 110136,China)
出处
《组合机床与自动化加工技术》
北大核心
2018年第3期30-33,37,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
辽宁省自然科学基金(2014024006)
关键词
机匣
让刀量
辅助支撑
铣削力建模
extending casing
relieving amount
auxiliary support
milling force model
