English  |  正體中文  |  简体中文  |  Items with full text/Total items : 889/889 (100%)
Visitors : 14663212      Online Users : 23
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://ccur.lib.ccu.edu.tw/handle/A095B0000Q/240


    Title: 動態阻尼鑑別應用於工具機縮減模型;Dynamic damping identification apply for machine tool of Reduce model
    Authors: 呂仁智;LU, REN-ZH
    Contributors: 機械工程系研究所
    Keywords: 工具機動態阻尼鑑別;阻尼效應;縮減模型;Dynamic damping identification for the machine tool;Damping effect;Reduced modeling
    Date: 2017
    Issue Date: 2019-07-17
    Publisher: 機械工程系研究所
    Abstract: 機控整合模擬分析目標為建立虛擬工具機,以模擬真實機台之動態行為;分析模型是否具備真實機台之動態特性參數,將影響模擬結果之可信度,故本篇論文將針對已完成材料性質、接觸剛性驗證之立式加工中心機分析模型,應用縮減模型於五大鑄件(底座、立柱、平台、鞍座、頭座)以加快電腦計算時間,從模態測試實驗與簡諧分析進行驗證,運用結構頻率響應函數進行工具機阻尼鑑別流程,包含結構阻尼、地腳阻尼、進給系統接合面阻尼。首先,使用五大鑄件各別敲擊模態鑑別出其結構阻尼後,為了獲得各部件、構件和?件之間的接合阻尼,整機採取階段組裝,首先底座安裝地腳於地面上,進行模態實驗測試與簡諧響應分析以鑑別地腳阻尼,接著安裝鞍座與底座上用於工具機接合處的機械元件,如Y軸線性滑軌與滑塊接觸面,依序進行整合模態實驗與簡諧響應分析結果,以鑑別各軸滑塊、螺桿之接觸阻尼;接序安裝工作台,重覆上述分析的鑑別與驗證,直至整機安裝完成依組立工具機機台順序;最後將應用所建立之鑑別流程,探討人造花崗岩高阻尼特性對於精密磨齒機結構響應之影響性。
    The goal of the coupling mechanic controller (i.e. mechatroller) modeling is to build a virtual machine tool so as to predict the dynamic performance of the real machine tool. How to identify the dynamic physical parameters from the real machine tool would affect the reliability of the mechatroller model. Therefore, the thesis utilizes the Component Mode Synthesis method on five casting parts, i.e. base, saddle, working plate, column, and spindle, to decrease the PC computing time. On the basis of the vertical machining center with the verified material properties and the joint stiffness, the harmonic response analysis was validated with the experimental modal analysis (EMA) to identify the damping parameter of the machine tool from the structural frequency response. The identification process of the damping includes the structural damping, the foundation damping, and the joint damping of the feed drive system. First, the structural damping of five casting parts was be identified from the EMA. In order to acquire joint contact damping between each part, the whole machine tool was assembled part by part. The base was setup on the ground with foundations. EMA was measured to validate the harmonic response analysis and identify the foundation damping. In the next step, the saddle and the feed drive systems, e.g. screw and sliders, were setup upon the base to validate the harmonic response analysis with EMA for acquiring the joint contact damping. Then, the working plate was setup to follow the above steps until the whole machine tool was completely setup and analyzed. Finally, the proposed identification process would be applied to discuss the influence of high damping characteristics of artificial granite on structural response of the precision grinding machine tool.
    Appears in Collections:[機械工程學系] 學位論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML580View/Open


    All items in CCUR are protected by copyright, with all rights reserved.


    版權聲明 © 國立中正大學圖書館網頁內容著作權屬國立中正大學圖書館

    隱私權及資訊安全政策

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback