臥式銑床主軸懸臂梁系統(tǒng)振動減振問題的模擬實(shí)驗研究

機(jī)械論文編號:JX376  附開題報告,文獻(xiàn)綜述,任務(wù)書,外文翻譯,設(shè)計圖紙,論文字?jǐn)?shù):18656.頁數(shù):38
目錄
第1章  前言┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 1
第2章  機(jī)床振動問題的分析┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 3
   2．1  機(jī)床減振問題的提出┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉3
   2．2  機(jī)床振動產(chǎn)生的原因及減振問題┉┉┉┉┉┉┉┉┉┉┉┉┉3
         2．2．1  機(jī)床振動產(chǎn)生的原因┉┉┉┉┉┉┉┉┉┉┉┉┉ 4
         2．2．2  機(jī)床減振問題的討論┉┉┉┉┉┉┉┉┉┉┉┉┉ 5
   2．3  本課題的提出┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉7
第3章  銑床模型機(jī)的設(shè)計┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 9
   3．1  X62W型銑床的介紹┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉  9
   3．2  模型機(jī)的設(shè)計┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 10
         3．2．1  模型機(jī)的總體結(jié)構(gòu)設(shè)計┉┉┉┉┉┉┉┉┉┉┉┉10
         3．2．2  模型機(jī)的內(nèi)部選型┉┉┉┉┉┉┉┉┉┉┉┉┉┉11
第4章  固有頻率的測定┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉13
   4．1  固有頻率測定方法的介紹┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 13
         4．1．1  測定固有頻率的意義┉┉┉┉┉┉┉┉┉┉┉┉┉13
4．1．2  儀器介紹┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉13
   4．2  用正弦激勵法測固有頻率┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 16
   4．3  用脈沖激勵法測固有頻率┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 18
第5章  模型機(jī)的減振試驗研究┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉19
1  正交試驗原理┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 19
5．1．1  正交試驗原理介紹┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 19
5．1．2  正交表安排試驗步驟┉┉┉┉┉┉┉┉┉┉┉┉┉ 20
5．2  試驗方案的選擇及試驗結(jié)果┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 21
5．2．1  鋼球減振試驗┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 21
5．2．2  沙子減振試驗┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 29
5．2．3  結(jié)論┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉ 31
第6章  機(jī)床動態(tài)性能的研究及趨勢展望┉┉┉┉┉┉┉┉┉┉┉┉┉33
總結(jié)┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉…………………36
參考文獻(xiàn)┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉37
致謝┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉38
附圖┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉┉39

摘要
機(jī)床工作時產(chǎn)生振動，不僅會影響機(jī)床的動態(tài)精度和被加工零件的質(zhì)量，而
且還要降低生產(chǎn)效率和刀具的耐用度。隨著科學(xué)技術(shù)的飛躍發(fā)展，對機(jī)器零件的制造精度和表面質(zhì)量提出了更高的要求，從而機(jī)床振動問題的研究成為研制、生產(chǎn)和使用機(jī)床部門必須面對的重大課題。本文主要是針對臥式銑床的振動及減振問題的研究。首先，參照X62W型銑床，設(shè)計了一臺用于減振試驗的銑床模型機(jī)。其中，盛放不同規(guī)格鋼球的減振槽相當(dāng)于一個阻尼消振器，利用鋼球之間及其與槽壁之間的碰撞摩擦，消耗銑床模型機(jī)的振動能量，以達(dá)到減振的目的。其次，利用正弦信號激勵的方法測試尋找了模型機(jī)的各階主要頻率，并分析了其結(jié)構(gòu)的固有特性。最后，利用正交表安排了五組鋼球減振實(shí)驗以及一組沙子減振實(shí)驗。六組實(shí)驗的數(shù)據(jù)對比及結(jié)果分析從一定程度上說明了利用鋼球減振的可實(shí)施性。
關(guān)鍵詞：振動減振，主軸懸臂梁系統(tǒng)，模擬實(shí)驗研究，固有頻率，鋼球減振

The horizontal milling machine cantilever beam vibrates the antivibration system the experimental characteristic research。
ABSTRACT
The engine bed has the vibration when it works .Not only can affect the dynamic precision and the part precision of the engine bed, but also reduce the production efficiency and the cutting tool abrasive resistance. With the leap development of the science and technology .It has put forward a higher request to the manufacture precision and the surface quality of the machine part .The engine bed vibration has became a important issue to the development, production and implementation department. This article is focus on the research of the horizontal milling machine vibration and the antivibration question. On the one hand, I has designed a milling machine molding machine that can be used for antivibration experiment refer to the X62W milling machine. The machine has a antivibration trough, we can put different specification steel ball according to our needs, which serve as a damping shock absorb. Utilizing the collision among the steel balls and the collision between the balls and the trough wall, the vibrational energy of the milling molding machine can be seriously reduced, achieving the antivibration goal. Next, the method test which drove using the sine signal has sought the molding machine various steps primary frequency, and has analyzed its structure inherent characteristic. Finally, has arranged five group of steel ball antivibration experiments as well as a group of sand antivibration experiment using the orthogonal array. Six groups test the data contrast and the result analysis showed from certain degree antivibration may implement using the steel ball。
KEY WORDS：Antivibration, Cantilever beam system, inherent frequency, antivibration using the steel ball