- 學位論文
疝氣手術器械用鈦釘成形片之鍛造成形分析
An Analysis of Forging Process for Titanium Screw Sheet of Hernia Surgical Instruments
摘要
台灣的鍛造產業對台灣的經濟發展扮演著舉足輕重的角色，大至船用主軸，小至螺絲螺帽皆可運用鍛造技術來生產。目前業界最大問題在於經驗傳承及用測試方式在解決問題，這種方式相當耗費時間與成本，但往往更因為人的因素，導致經驗無法傳承造成斷層，使得經驗無法延續。本文透過試驗配合電腦輔助模擬分析進行驗證來完成製程的改善。 本論文研究探討疝氣手術器械用鈦釘成形片之鍛造成形分析，針對目前製程進行改善，學生想以塑性成型的理論作為基礎再以鍛造成行方式來改善此產品之成本，使製程獲得改善提高效益。本論文先依成品進行建模再利用Deform-3D分析軟體模擬出的結果再進行實物試驗與之比對。 本論文模擬分析所產生的胚料流動變形、應力、應變分佈狀況及模具產生之應力磨耗等狀況，進行討論與研究。從模擬結果得知，上模前進20％時，鍛造最大應力在工件中間表面邊緣部分，當上模前進40％時，鈦釘成形片與模具的相對作用越來越顯著，其最大應力分佈在材料中間轉折造型部分，因為這個範圍為模具施加於材料上的位置。當上模前進60％時，最大應力在材料中間部分，此時模具對材料持續施加壓力讓材料持續填充於模穴中。當上模前進80％時，最大應力分佈還是在材料中間部分，此時模具對材料還在持續施加壓力讓材料持續填充於模穴中。當上模前進100％時，材料已經完全填充整個模穴，最大應力平均分佈材料中間部分。 實驗結果與Deform-3D模擬後進行比對，模擬分析所得到的數據與鈦釘成形片外形尺寸都符合圖面所規劃的公差，準確率達到95%，由此可知Deform-3D模擬後的數據，有很高的參考價值。所以模擬分析可實際運用於設計開發過程，進而縮短開發時程減少失敗成本。
並列摘要
Forging industry for Taiwan's economic development plays a pivotal role, ranging from marine spindle, small screws and nuts can utilize forging technology to produce. The biggest problem is that the industry experience, and ways to solve the problem with the test, this approach is quite time-consuming and cost, but more often because of the human factor, the experience can not lead to faults caused by inheritance and it makes the experience can not continue. In this paper, through the test with computer-aided simulation for verification to complete the process improvement. This thesis investigate hernia surgical instruments with titanium nail shape forging piece of molding analysis, improvements to the current process, the students want to theories of plastic molding as a basis for further in forging trip ways to improve the cost of this product, so that the process be improved to improve efficiency . In this paper, first by modeling the finished product reuse Deform-3D analysis software to simulate the results of further tests with real comparison.In this paper, blank flow generated simulation deformation, stress , strain and stress distribution resulting from the mold , wear and other conditions, In this paper, blank flow generated simulation deformation, stress, strain and stress distribution resulting from the mold, wear and other conditions, discussion and research. From the simulation results, when the upper die proceeds 20%, the maximum stress in the middle of the forging surface edge portion, when the upper die proceeds 40%, the relative roles of the titanium sheet and the staple forming molds and more significantly, the maximum stress distribution molding the intermediate material turning part, as this range is applied to the mold at a position on the material. When 60% of the forward mode, the maximum stress in the material in the middle portion, when the pressure is continuously applied to the mold material to allow the material in the mold cavity is filled last. 80% when the upper die advances, the maximum stress in the material or the distribution of the intermediate portion, then the mold material continues to put pressure on the material in the mold cavity is filled last. When the upper mold 100% advancing, the material has completely filled the mold cavity, the maximum average stress distribution material of the intermediate section. Data results after the Deform-3D simulation for comparison, data analysis and simulation of the resulting titanium screw shaped piece dimensions are in line with the planned surface tolerances, the accuracy rate of 95%, can be seen after Deform-3D simulation , a high reference value. So simulation analysis can be applied to the design and development process actually, thus shortening development time reduce the cost of failure.