整体式立铣刀的热固耦合仿真及优化设计

发布时间：2018-02-28 07:50

本文关键词： 硬质合金热固耦合整体式立铣刀磨削加工三维建模温度场优化设计铣削试验　出处：《西安工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：现阶段,硬质合金刀具已经成为我国加工制造业所需的主要刀具,被广泛地应用在汽车及零部件生产、磨具制造、航空航天等重工业领域。但是我国传统的刀具设计方法已经无法满足高精度、高性能的硬质合金刀具的生产。从而在现代刀具设计方法中,应综合考虑硬质合金刀具的结构与切削加工时所受到温度、应力及应变等因素的几何关系,因为这些因素是刀具发生磨损和破损的重要因素。通过掌握现代刀具设计的先进技术,实现我国制造业在硬质合金刀具需求上的“自给自足”。因此,本文针对整体式硬质合金立铣刀铣削加工时热固耦合及几何结构优化进行深入的研究。首先基于ANCA数控磨床的磨削加工原理,建立精确的整体式立铣刀几何结构的数学模型;然后利用Solid Works软件建立虚拟砂轮实体扫描切除构建出精确的整体式立铣刀的三维模型;将模型转换格式保存导入到ANSYS有限元分析软件中进行温度场及热固耦合分析;通过ISIGHT优化软件将三维建模及有限元分析过程集成,设置好相关的约束及条件,来实现整体式立铣刀几何结构的自动优化;最后通过ANCA数控磨床将优化后的立铣刀和优化前立铣刀加工出实体在铣床上进行铣削试验,分别测试两类立铣刀的磨损规律及寿命。通过基于ANSYS的整体式立铣刀的温度场及热固耦合的分析研究,得到了不同铣削参数下立铣刀温度场及热固耦合场的变化规律。为立铣刀在铣削加工时根据自身需求选择合适的铣削参数提供了有效的依据。通过基于ISIGHT的整体式立铣刀几何结构优化设计的研究,实现了立铣刀在特定条件下几何结构参数的最优化,并经过实体铣削试验验证这种优化方法是合理可行的。为提高立铣力铣削性能、实现几何结构参数优化的自动化、缩短立铣刀研发周期及延长立铣刀寿命提供有效工具。
[Abstract]:At this stage, cemented carbide cutting tools has become the main tool of China's manufacturing industry needs, is widely used in the production of auto parts, abrasives manufacturing, aerospace and other industrial fields. But the traditional tool design method in our country has been unable to meet the high precision, high performance cemented carbide tool in order to production. The modern tool design method, should be integrated into the structure and machining of hard alloy cutter by temperature, stress and strain should be geometric relations and other factors, because these factors are important for tool wear and breakage. By mastering the advanced technology of modern tool design, the realization of China's manufacturing industry in the cemented carbide tool requirements the "self-sufficiency". Therefore, the total hard alloy milling cutter coupling and thermosetting geometry optimization research based on AN. The grinding principle of CA CNC grinding machine, mathematical model of cutter geometric structure of the integral precision; then Solid Works software to establish the three-dimensional model of the whole construct resection type precise cutter wheel scan using the virtual entity; converting model format into ANSYS finite element analysis software for coupling analysis of temperature field and heat; three-dimensional modeling and finite element analysis of process integration by ISIGHT optimization software, set up the relevant constraints and conditions, to achieve automatic optimization of integral cutter geometry; finally through the ANCA numerical control grinder optimized milling cutter and milling machining optimization entity milling experiments on the milling machine, the test respectively. Two kinds of cutter wear law and life. Through the analysis of the temperature field and the thermal mechanical coupling integral based on ANSYS mills, obtained the different milling Milling temperature field and the vertical variation of thermosetting coupling parameters. It provides an effective basis for the cutter in milling according to their own needs to choose appropriate parameters. Through the study of milling cutter geometry optimization design of vertical integral based on ISIGHT, to achieve the optimal cutter geometry parameters in specific condition. And after milling test entity this optimization method is reasonable and feasible. In order to improve the milling force milling performance, realize the automation of structure parameter optimization of cutter geometry, shorten the development cycle and prolong the life of cutter to provide effective tools.

【学位授予单位】：西安工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG714

【相似文献】