本文選題：電主軸 + 靜動態(tài)特性��； 參考：《武漢輕工大學》2015年碩士論文

【摘要】：電主軸作為高檔機床的核心功能部件,其結構與性能的好壞直接決定了整機工作性能。故而,研究和分析電主軸單元結構、動靜態(tài)特性和結構優(yōu)化等關鍵問題,對于提高電主軸的性能具有重要意義。論文介紹了電主軸的工作原理、基本結構、關鍵技術問題;根據(jù)設計要求,確定了電主軸的關鍵結構參數(shù),借助CAXA軟件完成了電主軸詳細結構設計,運用Solid Edge建模軟件中完成了零件的幾何建模和裝配體建模;運用ANSYS有限元軟件,對主軸系統(tǒng)進行了靜、動態(tài)特性分析研究和結構優(yōu)化。(1)依據(jù)電主軸的基本結構和設計要求,從結構形式、電機選型、主軸結構參數(shù)、軸承選型、潤滑和冷卻方式等關鍵問題進行方案設計和參數(shù)確定,獲得了電主軸整體結構。(2)介紹Solid Edge中幾何建模的方法,完成了電主軸全部零件的三維建模和整體裝配建模,直觀展示了電主軸的結構。(3)運用有限元方法,對主軸系統(tǒng)模型進行簡化,在ANSYS軟件中完成了主軸—軸承系統(tǒng)的靜動態(tài)特性分析,分析了主軸的靜剛度、固有頻率和振型,驗證了設計的可行性。(4)在主軸—軸承系統(tǒng)靜動態(tài)特性分析的基礎上,以減少主軸體積,提高主軸靜動態(tài)性能為目標,運用ANSYS多目標優(yōu)化功能,對主軸軸承間距、軸承與電機轉子間距、懸伸量進行了優(yōu)化,獲得了優(yōu)化結果,并進一步比較了主軸優(yōu)化前后的靜動態(tài)性能。
[Abstract]:As the core functional part of high-grade machine tool, the structure and performance of motorized spindle directly determine the working performance of the whole machine. Therefore, it is of great significance to study and analyze the structure, dynamic and static characteristics and structural optimization of the motorized spindle. This paper introduces the working principle, basic structure and key technical problems of the motorized spindle, determines the key structural parameters of the motorized spindle according to the design requirements, and completes the detailed structural design of the motorized spindle with the aid of CAXA software. The geometric modeling and assembly modeling of parts are completed by using solid Edge modeling software, and the static and dynamic characteristic analysis and structural optimization of spindle system are carried out by using ANSYS finite element software. (1) according to the basic structure and design requirements of motorized spindle, From the structural form, motor type selection, spindle structure parameter, bearing selection, lubrication and cooling mode and so on, the scheme design and parameter determination are carried out. (2) the geometric modeling method in solid Edge is introduced. The 3D modeling and integral assembly modeling of all the parts of the motorized spindle are completed, and the structure of the motorized spindle is displayed intuitively. (3) the model of the spindle system is simplified by using the finite element method. The static and dynamic characteristic analysis of the spindle bearing system is completed in ANSYS software. The static stiffness, natural frequency and vibration mode of the spindle are analyzed, and the feasibility of the design is verified. (4) on the basis of the static and dynamic characteristic analysis of the spindle bearing system, the static and dynamic characteristics of the spindle bearing system are analyzed. In order to reduce the volume of the spindle and improve the static and dynamic performance of the spindle, by using the multi-objective optimization function of ANSYS, the distance between the spindle bearing and the rotor of the motor and the overhang are optimized, and the optimized results are obtained. The static and dynamic performances of the spindle before and after optimization are further compared.
【學位授予單位】：武漢輕工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG502.3

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