臺灣博碩士論文加值系統

工具機機台結構十分複雜，包含許多重要主件如主軸頭座、立柱、工作台與底座等。各組件間藉滑塊導引，在滾珠螺桿進給下，可沿滑軌作線性運動及達到µ級定位。故線性滑軌為重要零組件，其特性將影響工具機整體剛性十分巨大。一般分析時，皆以彈簧來代表滑塊及滑軌剛性。然而線性滑軌必須承受上下左右等各方向負荷，且實際上型式規格眾多，如此簡化模式無法精確的展現線性滑軌特性，工具機整體結構剛性自然無法有效預估。本文先建立螺栓、滑塊、線軌、滾珠等模式，使得各組件相互結合的界面問題得以解決，工具機整機模擬可一次完成，不需在分析後另輔以實驗調整彈簧勁度。電腦預估結果並以實驗比對，以確立分析模式的可靠度。

The horizontal machining center is a very complex machine, which consisting of many primary precise parts including spindle head seat, column, work table base and base etc. Each part is jointed by linear guideways or bolts. Hence, the linear guideway is a very important component and it affects the static and dynamic behavior of the machine a lot. Traditionally, the linear guideway is modeled as a spring, its stiffness is tuned base on experiment results. In this study, a mathematical models including bolt, ball bearing and linear guideway is created and implemented into the finite element model. The methodology developed can predict the static and dynamic behavior of the complex machining center without tuning any parameters. The analysis results are also compared with laboratory experiments to verify the model developed.

中文摘要 ……………………………………………………I
英文摘要 ……………………………………………………II
目錄 ………………………………………………………III
圖目錄 ………………………………………………………V
表目錄 ……………………………………………………IX
第一章 緒論 ……………………………………………….1
1 — 1 研究動機 ……………………………………….1
1 — 2 研究方法 ……………………………………….2
第二章 單件有限元素模式建立與比對驗證 ……………4
2 — 1 主軸頭座有限元素模式與驗證 ……………….4
2 — 2 立柱有限元素模式與驗證 …………………….7
2 — 3 托板有限元素模式與驗證 …………………13
2 — 4 定位座有限元素模式與驗證 ………………17
2 — 5 工作台底座有限元素模式與驗證 …………20
2 — 6 底座有限元素模式與驗證 …………………...24
2 — 7 主軸有限元素模式與驗證 …………………30
第三章 結合界面模擬技術發展 ………………………….33
3 — 1 螺栓模擬技術 ………………………………33
3 — 2 線性滑軌模擬技術 …………………………41
第四章 整機分析 ………………………………………….48
4 — 1 整機靜剛性分析 ……………………………48
第五章 整機動態分析 …………………………………….56
5 — 1 整機模態分析 ………………………………56
5 — 2 整機動態反應 ………………………………62
第六章 結論與建議 ………………………………………66
參考文獻 …………………………………………………68
附錄A 整機靜剛性實驗說明 …...………………………..70
附錄B 螺栓溫度差MATHEMATICA程式 ………………72
附錄C 滾珠k值MATHEMATICA程式 ………………….73

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