(3.92.96.236) 您好!臺灣時間:2021/05/09 01:41
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:鄭瑞楓
研究生(外文):Jui-Feng Cheng
論文名稱:圓八齒T型銲接螺帽成形模具磨耗與同心度研究
論文名稱(外文):A study on forming die wear and concentricity of round clinch T welding nut
指導教授:許昭和許昭和引用關係
指導教授(外文):Chao-Ho Hsu
學位類別:碩士
校院名稱:國立高雄應用科技大學
系所名稱:模具工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:101
畢業學年度:100
語文別:中文
論文頁數:90
中文關鍵詞:螺帽磨耗同心度模具壽命
外文關鍵詞:NutsWearConcentricityDie life
相關次數:
  • 被引用被引用:2
  • 點閱點閱:587
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:1
圓八齒T型銲接螺帽為六道次冷鍛成形,成形模具在鍛造時會有磨耗情形產生,特別於第六道次的通孔過程,在嚴重磨耗下將造成產品精度不符合客戶要求(偏心≦0.2mm)。目前產業界對扣件成形與模具設計普遍採用實務經驗與試誤法,模具開發時效與設計成本較不符合經濟效益。本研究以金屬成形理論為基礎,使用軟體Pro/Engineer和 DEFORM 3D進行多道次的成形分析與探討模具之磨耗,並對模具磨耗深度與同心度之關係做模具壽命預測,文中採用Archard提出的磨耗理論,以不改變模具材料為基準,設計模具幾何外形尺寸,有效減少模具磨耗深度,提升模具使用壽命,並且預測成形模具之磨耗情形與廠商測量趨勢吻合。
The round clinch T welding nut is formed by six stages of cold forging. The wear of forming die will occur during forging period, particularly been happened in sixth stage while punch the hole process. It will cause the accuracy out of customer’s specification by heavily wear (Eccentricity≦0.2mm). At current fastener industry, the design of forming die at fasteners is mainly relied on practical experiences and trial-and-error. The development time and the design costs do not conform to the economic benefit. This study is based on the theory of metal forming, uses the software Pro/Engineer and DEFORM3D to analyze forming and investigate the die wear in multi-stages. The die life based on the relationship between the depth of die wear and concentricity could be predicted. To effectively reduce the depth of wear and improve the life of die, Archard's wear criterion is used to design the geometrical size of die without material changed. The prediction of die wear in forming is match with the measurement result in factory.
摘 要 i
Abstract ii
誌 謝 iii
目 錄 iv
表 目 錄 vi
圖 目 錄 viii
符 號 說 明 x
第一章 緒論 1
1-1 前言 1
1-2 文獻回顧 3
1-2-1 有限元素法 3
1-2-2 磨耗 4
1-2-3 模具壽命 5
1-3 研究目的與動機 7
1-4 論文架構 8
第二章基本理論 9
2-1 鍛造加工 9
2-2 磨潤學 12
2-2-1磨耗分類與特徵 13
2-2-2 Archard磨耗方程式 16
2-3 形位公差 18
2-4 平均值與標準差 20
第三章 研究規劃 21
3-1圓八齒T型銲接螺帽產品 21
3-2圓八齒T型銲接螺帽成形設計 22
3-3圓八齒T型銲接螺帽針對缺陷提出之改善方案 23
3-4圓八齒T型銲接螺帽研究流程 27
第四章 有限元素法與電腦模擬分析 29
4-1 有限元素簡介 29
4-2 DEFORM-3D軟體簡介 30
4-2-1 DEFORM-3D模組 30
4-2-2 DEFORM-3D解析模式 31
4-2-3 DEFORM-3D摩擦環境條件 32
4-3 材料機械性質 34
4-3-1 胚料 34
4-3-2 模具 34
4-4 收斂性分析 38
4-5 假設模式與模擬參數設定 40
4-5-1 假設模式 40
4-5-2 模擬參數設定 41
第五章 結果與討論 43
5-1 原始與改善缺陷之成形磨耗分析 43
5-2 第六道次磨耗情形與同心度關係 52
5-3 新成形模具模擬分析與比較 55
5-4 模具實際壽命情形與同心度量測 62
第六章 結論 71
6-1 結論 71
6-2 未來研究方向 72
參 考 文 獻 73
作 者 簡 介 76
[1]Y. S. Lee, S. K. Hwang, Y. S. Chang and B. B. Hwang, The forming characteristics of radial-forward extrusion, Journal of Materials Processing Technology, Vol. 113, pp. 136-140, 2001
[2]C. MacCormack and J. Monaghan, 2D and 3D finite element analysis of a three stage forging sequence, Journal of Materials Processing Technology, Vol. 127, pp. 48-56, 2002
[3]A. Behrens and H. Just, Extension of the forming limits in cold and warm forging by the FE based fracture analysis with the integrated damage model of effective stresses, Journal of Materials Processing Technology, Vol. 125-126, pp. 235-241, 2002
[4]D. K. Min and M. E. Kim, A study on precision cold forging process improvements for the steering yoke of automobiles by the rigid–plastic finite-element method, Journal of Materials Processing Technology, Vol. 138, pp. 339-342, 2003
[5]G. Liu, L. B. Zhang, X. L. Hu, Z. R. Wang, R. W. Wang, S. D. Huang and Q. B. Tang, Applications of numerical simulation to the analysis of bulk-forming processes-case studies, Journal of Materials Processing Technology, Vol. 150, pp. 56-61, 2004
[6]H. S. Kim, A study on cold forging process sequence design of terminal pins for high-voltage capacitors, Journal of Materials Processing Technology, Vol. 187-188, pp. 604-608, 2007
[7]B. Y. Jun , S. M. Kang, M. C. Lee, R. H. Park and M. S. Joun. , Prediction of geometric dimensions for cold forgings using the finite element method, Journal of Materials Processing Technology, Vol. 189, pp. 459–465, 2007
[8]李克讓,磨潤工程,中國機械工程學會出版社,第15-27頁,1987
[9]J. F. Burwell, C. D. Strang, On the empirical law of adhesive wear, J. Appl. Phys., Vol.23, pp. 18-28, 1952
[10]J. F. Archard, Contacts and rubbing of flat surfaces, J. Appl. Phys., Vol. 24, pp. 981–988, 1953
[11]O.C. Vardan, A. Bagchi and T. Altan, Investigation of die wear in upsetting using the FEM code ALPID ,Proc. 15th Nth. American Manufacturing Res. Conf., SME, pp.386-9, 1987
[12]D. Wibom, J.A. Nielsen and N. Bay, A new friction and lubrication test for cold forging , Ann CIRP., Vol.44(1), pp. 217-221, 1995
[13]G. A. LEE and Y. T. Im, Finite-element investigation of the wear and elastic deformation of dies in metal forming, Journal of Materials Processing Technology, Vol. 89-90, pp. 123-127, 1999
[14]陳怡安,數值模擬於溫鍛模具磨耗分析之應用,碩士論文,國立成功大學機械工程學系,2001
[15]謝智尹,探討Archard理論預測正齒輪的磨耗壽命之適用性,碩士論文,國立清華大學動力機械學系,2002
[16]R. S. Lee and J. L. Jou, Application of numerical simulation for wear analysis of warm forging die, Journal of Materials Processing Technology, Vol. 140, pp. 43-48, 2003
[17]H. C. Lee, Y. Lee, S. Y. Lee, S. Choi, D. L. Lee and Y. T. Im, Tool life prediction for the bolt forming process based on high-cycle fatigue and wear, Journal of Materials Processing Technology, Vol. 20, pp. 348-353, 2008
[18]Y. C. Yen, J. Sohner, B. Lilly and T. Altan, Estimation of tool wear in orthogonal cutting using the finite element analysis, Journal of Materials Processing Technology, Vol.146, pp.82-91, 2004
[19]M. Dubar, A. Dubois and L. Dubar, Wear analysis of tools in cold forging: PVD versus CVD TiN coatings, Wear, Vol. 259, pp. 1109-1116, 2005
[20]K-D. Bouzakis, I. Mirisidis, E. Lili, N. Michailidis, A. Sampris, G. Skordaris, E. Pavlidou, G. Erkens and I. Wirth, Impact resistance of PVD films and milling performance of coated tools at various temperature levels, CRIP Annals-Manufacturing Technology, Vol.55, pp. 67-70, 2006
[21]L. Filice, D. Umbrello, F. Micari and L. Settineri, Wear modelling in mild steel orthogonal cutting when using uncoated carbide Tools, Wear, Vol. 262, pp.545-554, 2007
[22]J. A. Schey, Tribology in Metalworking: Friction, Lubrication and Wear, American Society for Metals, Metals Park, Ohio, pp. 483-485, 1983
[23]O. Wibom, J. A. Nielsen and N. Bay, Influence of Tool Temperature on Friction and Lubrication in Cold Forging of Steel, 26th ICFG Plenary Meeting, Osaka, 1993
[24]李宜哲、陳復國,鍛造模具破損原因之探討,鍛造,第67-78頁,1994
[25]江昌勇,模具的失效分析,模具工業,No.12, 第8-11頁,1996
[26]T. Altan and M. Knoerr, Application of 2D Finite Element Method to Simulation of Cold Forging Process, Journal of Materials Processing Technology, Vol. 35, pp.275, 1992
[27]V. Vazquez, D. Hannan and T. Altan, Tool life in cold forging– example of design improvement to increase service life, Journal of Materials Processing Technology, Vol. 98, pp. 90-96, 2000
[28]V. Vazquez and T. Altan, New concepts in die design–physical and computer modeling applications, Journal of Materials Processing Technology, Vol. 98, pp. 212-223, 2000
[29]B. Falk, U. Engel and M. Geiger, Fundamental aspects for the evaluation of the fatigue behavior of cold forging tools, Journal of Materials Processing Technology, Vol. 119, pp. 158-164, 2001
[30]K. Wagner, A. Putz and U .Engel, Improvement of tool life in cold forging by locally optimized surfaces, Journal of Materials Processing Technology, Vol. 177, pp. 206-209, 2006
[31]H. C. Lee, M. A. Saroosh, J. H. Song and Y.T. Im, The effect of shrink fitting ratios on tool life in bolt forming processes, Journal of materials processing technology, Vol. 209, pp. 3766-3775, 2009
[32]李政哲,圓八齒T型銲接螺帽成形模具應力分析,碩士論文,國立高雄應用科技大學模具工程學系,2011
[33]J. F. Archard and W. Hirst, The wear if metals under unlubricated conditions, Proc. R. Soc. Lond. 236A, pp. 397-410, 1956
[34]F. P. Bowden and D. Tabor, Friction and lubrication of solids, Part I, Clarendon Press, Oxford, 1954
[35]陳正宗,洪宏基,邊界元素法,台北新世界出版社,第374-377頁,1992
[36]DEFORM 3D Version 6.1 (sp2), Scientific Forming Technologies Corporation, Feb. 29, 2008
[37]陳麒翰,不銹鋼平板搓牙製程有限元素法分析之研究,國立成功大學,碩士論文,2004
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔