本文關鍵詞： 硬質合金 熱固耦合 整體式立銑刀 磨削加工 三維建模 溫度場 優(yōu)化設計 銑削試驗　出處：《西安工業(yè)大學》2017年碩士論文　論文類型：學位論文

【摘要】：現(xiàn)階段,硬質合金刀具已經成為我國加工制造業(yè)所需的主要刀具,被廣泛地應用在汽車及零部件生產、磨具制造、航空航天等重工業(yè)領域。但是我國傳統(tǒng)的刀具設計方法已經無法滿足高精度、高性能的硬質合金刀具的生產。從而在現(xiàn)代刀具設計方法中,應綜合考慮硬質合金刀具的結構與切削加工時所受到溫度、應力及應變等因素的幾何關系,因為這些因素是刀具發(fā)生磨損和破損的重要因素。通過掌握現(xiàn)代刀具設計的先進技術,實現(xiàn)我國制造業(yè)在硬質合金刀具需求上的“自給自足”。因此,本文針對整體式硬質合金立銑刀銑削加工時熱固耦合及幾何結構優(yōu)化進行深入的研究。首先基于ANCA數控磨床的磨削加工原理,建立精確的整體式立銑刀幾何結構的數學模型;然后利用Solid Works軟件建立虛擬砂輪實體掃描切除構建出精確的整體式立銑刀的三維模型;將模型轉換格式保存導入到ANSYS有限元分析軟件中進行溫度場及熱固耦合分析;通過ISIGHT優(yōu)化軟件將三維建模及有限元分析過程集成,設置好相關的約束及條件,來實現(xiàn)整體式立銑刀幾何結構的自動優(yōu)化;最后通過ANCA數控磨床將優(yōu)化后的立銑刀和優(yōu)化前立銑刀加工出實體在銑床上進行銑削試驗,分別測試兩類立銑刀的磨損規(guī)律及壽命。通過基于ANSYS的整體式立銑刀的溫度場及熱固耦合的分析研究,得到了不同銑削參數下立銑刀溫度場及熱固耦合場的變化規(guī)律。為立銑刀在銑削加工時根據自身需求選擇合適的銑削參數提供了有效的依據。通過基于ISIGHT的整體式立銑刀幾何結構優(yōu)化設計的研究,實現(xiàn)了立銑刀在特定條件下幾何結構參數的最優(yōu)化,并經過實體銑削試驗驗證這種優(yōu)化方法是合理可行的。為提高立銑力銑削性能、實現(xiàn)幾何結構參數優(yōu)化的自動化、縮短立銑刀研發(fā)周期及延長立銑刀壽命提供有效工具。
[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.

【學位授予單位】：西安工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TG714

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