進階搜尋


   電子論文尚未授權公開,紙本請查館藏目錄
(※如查詢不到或館藏狀況顯示「閉架不公開」,表示該本論文不在書庫,無法取用。)
系統識別號 U0026-2006201416130500
論文名稱(中文) 應用參數模型軟體於平面四桿機構合成
論文名稱(英文) Synthesis of Planar Four-Bar Linkages Using Parametric Modeling Software
校院名稱 成功大學
系所名稱(中) 機械工程學系
系所名稱(英) Department of Mechanical Engineering
學年度 102
學期 2
出版年 103
研究生(中文) 邱顯鈞
研究生(英文) Hsian-Chun Chiuo
學號 N16011605
學位類別 碩士
語文別 中文
論文頁數 58頁
口試委員 指導教授-黃金沺
口試委員-陳家豪
口試委員-許來興
中文關鍵字 參數模型軟體  SolidWorks  合成  平面機構 
英文關鍵字 Parametric Modeling Software  SolidWorks  Synthesis  Planar Linkage 
學科別分類
中文摘要 本論文提供一個運用參數模型軟體—SolidWorks®的方法,來進行平面四桿機構合成,研究內容包含四個經典的平面機構合成問題:剛體導引問題、路徑衍生問題、函數機構合成問題及點與角度問題。希望提供使用者一個直觀且方便的平面機構設計的合成方法,即便是沒有學習過圖解法或數值法等傳統機構設計方法的使用者也能順利使用。
此方法以傳統圖解法之概念為基礎,利用參數模型軟體即時更新模型的特性,作為機構設計時之反饋,以即時進行調整;並利用電腦強大的計算能力及精確的繪圖功能,結合圖解法與數值解的優點。全文以引導使用者運用此方法進行平面四桿機構合成之架構進行,並提供相對應的數學模型,驗證本方法之可行性。在四個不同的平面機構合成問題中,皆依步驟逐漸帶領使用者進行平面機構設計,並提供說明其原因及概念,讓使用者可以完全了解各步驟的動機與目的,直觀且自由地運用此方法進行平面機構合成。
在這四個平面機構合成問題中,剛體導引問題的最大導引位置數是5個位置,路徑衍生問題的最大耦桿點導引位置數為9個位置,函數機構合成最多可以有5個精確點,點與角度問題的最大導引位置數為5個位置。利用本論文的方法進行平面機構合成,若其給定的設計條件是有解的,在四種不同平面機構合成問題中皆能順利達成最大設計指定位置數,並可以直接於參數模型中建立合成結果之模型,直接驗證其結果,證明其可行性。
由本論文證實利用參數模型軟體可提供一個直觀且入門門檻較低的新方法來進行平面機構合成,且參數模型軟體也具有平面機構分析之潛能,未來若能進行整合,將能在參數模型軟體上建立出更完整且全面的平面機構設計方法。
英文摘要 SUMMARY

This thesis provides an approach for the synthesis of planar four-bar linkages by using the popular parametric modeling software—SolidWorks®. This approach is based on conventional graphical methods as well as analytical methods. The main advantage is that the parametric modeling software allows the user to adjust the model in real time due to its immediate updating feature. This thesis begins with guiding the user to utilize SolidWorks® and reviewing the synthesis of planar four-bar linkages. It then provides step-by-step procedures to explain the concepts of solving four basic problems of synthesis in the software environment. The four classical synthesis problems of planar four-bar linkages discussed in this thesis are: the rigid-body guidance, path generation, function generator, and point-angle problems. For each problem, its maximum number of design specifications has been demonstrated by using SolidWorks® in order to prove the feasibility of the proposed approach.

Keywords: Parametric Modeling Software, SolidWorks, Synthesis, Planar Linkage.


INTODUCTION

This thesis provides an approach for the synthesis of planar four-bar linkages by using the popular parametric modeling software—SolidWorks®. For the synthesis of planar four-bar linkages, traditional graphical methods are usually cumbersome and lacking accuracy. On the other hand, analytical and numerical methods are complicated and require substantial knowledge about the methods. In this thesis, we aim at combining the advantages of graphical and analytical methods. The goal is to provide a simple and intuitive method for the user to synthesize planar linkages even when he/she only has limited knowledge about analytical, numerical, or graphical method for synthesis. We discuss four classical synthesis problems: the rigid-body guidance, path generation, function generator, and point-angle problems.

The idea of apply the concept of geometric constraint to planar mechanism analysis was proposed by Kinzel et.al (2006). The concept of applying parametric modeling software to the analysis of planar mechanisms was proposed recently by the Mirth (2012). He combined the parametric modeling software, SolidWorks®, with the concept of geometric constraints and used it in teaching plane mechanisms. To date, there is no thorough study in the synthesis of planar mechanisms by using parametric modeling software. This thesis focuses on the use of the parametric modeling software SolidWorks® in planar mechanism synthesis.


MATERIALS AND METHODS

This approach employs the geometric constraint feature in the 2-D sketch mode of SolidWorks®. First, the mechanism is drawn at each required position (or precision point) and equality constraints are applied to corresponding links at each position. The parametric modeling software allows the user to adjust the model in real time due to its immediate updating feature. Furthermore, the kernel of the program has the advantages of both graphical and numerical methods with powerful calculation ability and precise cartography function. Finally, the design results can be verified directly by animation models in SolidWorks®.

This thesis begins with guiding the user to utilize SolidWorks® and reviewing the synthesis of planar four-bar linkages. It then provides step-by-step procedures to explain the concepts of solving four classical synthesis problems in the software environment. We hope to allow users who may not have substantial background knowledge of planar mechanisms to synthesize planar four-bar linkages by using this tool.


RESULTS AND DISCUSSION

For each synthesis problem, the maximum allowable design specifications of has been demonstrated by using SolidWorks®. There are at most five design positions in a rigid-body guidance problem; at most nine coupler points can be specified in a path generation problem. Up to five precision points can be the synthesized in a function generator problem. For the point-angle problem, there can be at most five design positions. When the maximum design specifications are given, SolidWorks® can achieve satisfactory results in all four problems. Most importantly, the feasibility of design results can be verified immediately by animation models within the same software environment.

The parametric modeling software provides a powerful means for synthesizing planar linkages. The strength of this approach for the synthesis of planar mechanism design lies in the ability to make changes with immediate visual feedback. This capability is well harnessed in the synthesis of planar four-bar linkages by the development of a systematic set of design steps that allow the designer to verify the linkage motion as the linkage is being created. The use of parametric modeling software with SolidWorks® can allow the designer to quickly move toward viable linkage solutions.


CONCLUSION

This thesis demonstrates that the parametric modeling software can be an intuitive and user-friendly software environment for the synthesis of planar four-bar linkages. The parametric modeling software can also be utilized in the analysis of more complicated planar linkages.

Even though matching maximum design positions of planar four-bar linkages are hard to accomplish using conventional methods or even this approach. When using this approach in real applications, we can reduce the number of design positions to make the synthesis processes more feasible. That is, we can adjust the design results according to more flexible requirements. Based on the study given in this thesis, if integrated, one can establish more complete and comprehensible planar linkage design and analysis tools in a parametric modeling software environment.
論文目次 摘要 I
Abstract II
誌謝 V
表目錄 VIII
圖目錄 IX
符號說明 XI
第一章 緒論 1
1-1 前言 1
1-2 文獻回顧 1
1-3 研究動機與目的 2
1-4 本文架構 2
第二章 基本理論 4
2-1 向量迴路法 4
2-2 運動倒置法 6
2-3 參數模型 8
2-4 SolidWorks®介紹與其在連桿機構運動學之應用 8
第三章 剛體導引問題 13
3-1 剛體導引問題 13
3-2 剛體導引問題之數學模型 13
3-3 使用SolidWorks進行剛體導引問題之平面機構設計 15
3-4 實際應用:Yaris單臂雨刷 21
3-5 討論 25
第四章 路徑衍生問題 26
4-1 路徑衍生問題 26
4-2 路徑衍生問題之數學模型 26
4-3 使用SolidWorks進行路徑衍生問題之平面機構設計 28
4-4 討論 32
第五章 函數機構合成 36
5-1 函數機構 36
5-2 函數機構之數學模型 36
5-3 使用SolidWorks進行函數機構之平面機構設計 37
5-4 討論 42
第六章 點與角度問題 44
6-1 點與角度問題 44
6-2 點與角度問題之數學模型 44
6-3 使用SolidWorks進行點與角度問題之平面機構設計 45
6-4 討論 50
第七章 結論與未來方向 53
7-1 結論 53
7-2 未來方向 55
參考資料 56
自述 58
參考文獻 1. Chase, T. R., Erdman A. G., and Riley D. R., "Triad Synthesis for up to Five Design Positions with Application to the Design of Arbitrary Planar Mechanisms," Journal of Mechanisms, Transmissions and Automation in Design 109.4: 426-434, 1987.
2. Chase, T. R., and Mirth J. A. "Circuits and Branches of Single-Degree-of-Freedom Planar Linkages," Journal of Mechanical Design 115.2: 223-230, 1993.
3. Cleghorn, W. L., Mechanics of Machines, Oxford University Press, 2005.
4. Kinzel, E. C., Schmiedeler J. P., and Pennock G. R., "Kinematic Synthesis for Finitely Separated Positions Using Geometric Constraint Programming," Journal of Mechanical Design 128.5: 1070-1079, 2006.
5. Kinzel, E. C., Schmiedeler J. P., and Pennock G. R., "Function Generation with Finitely Separated Precision Points Using Geometric Constraint Programming," Journal of Mechanical Design 129.11: 1185-1190, 2007.
6. Mirth, J. A., and Chase, T. R., "Circuit Rectification for Four Precision Position Synthesis of Four-Bar and Watt Six-Bar Linkages," Journal of Mechanical Design 117.4: 612-619, 1995.
7. Mirth, J. A., "Parametric Modeling: A New Paradigm for Mechanisms Education?" ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Chicago, IL, USA, 2012.
8. Mirth, J. A., "The Application of Geometric Constraint Programming to the Design of Motion Generating Six-Bar Linkages." ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Chicago, IL, USA, 2012.2012.
9. Tsai, L.-W., Robot Analysis: the Mechanics of Serial and Parallel Manipulators, John Wiley & Sons, 1999.
10. Wampler, C. W., Sommese A. J., and Morgan A. P., "Complete Solution of the Nine-Point Path Synthesis Problem for Four-Bar Linkages," Journal of Mechanical Design 114.1: 153-159, 1992.
11. 蔣君宏,平面機構之運動學與設計,二版,台北,高立圖書有限公司,頁67-126,2006。
論文全文使用權限
  • 同意授權校內瀏覽/列印電子全文服務,於2019-08-07起公開。


  • 如您有疑問,請聯絡圖書館
    聯絡電話:(06)2757575#65773
    聯絡E-mail:etds@email.ncku.edu.tw