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手工具套筒產品製程及模具設計系統開發

Development of the Design System for Hand Tool Sleeve Forming Process and Die

摘要


手工具套筒產品常以鍛造成形技術進行量產,其成形製程之設計不僅需要考慮材料之成形極限,也需要適當的預成形幾何,才能確保材料充填模穴而完成鍛品製作。本文針對手工具之套筒產品,分析其材料成形極限及合理鍛胚體積分配,建立套筒設計法則與鍛胚幾何設計模型,並經由上界限法建立套筒成形負荷,依據不同套筒類產品幾何參數,自動產生標準成形製程並比較各道次負荷。此外,本文將應用前述之結果,建構一個可提供套筒鍛胚幾何、模具幾何、預成形幾何及成形負荷等資訊之預成形設計系統。研究成果不僅有助於手工具套筒產業之鍛品設計與製程規劃,也可提供其他金屬成形產業,作為發展智慧設計系統之參考。

並列摘要


The hand tool sleeve products are often mass-produced by forging technology. The design of the forming process not only needs to consider the forming limit of the material, but also requires appropriate pre-forming geometry to ensure that the material fills the die cavity and completes the forging production. In this article, aiming at the sleeve products of hand tools, the material forming limit and reasonable forging blank volume distribution were analyzed, and the sleeve design rule and the forging blank geometric design model were established, and the sleeve forming load was established through the upper limit method. And according to the geometric parameters of different sleeve products, the standard forming process is automatically generated and the load of each pass is compared. In addition, this article will apply the aforementioned results to construct a preform design system that can provide information such as sleeve blank geometry, die geometry, preform geometry and forming load. The results shown in this article not only help the forging product design and process planning of the hand tool socket industry, but also provide other metal forming industries as a reference for the development of intelligent design systems.

參考文獻


D. Sheth, Santanu Das, A. Chatterjee, and A. Bhattacharya, “Exploring forging load in closed-die forging,” 5th International and 26th All India Manufacturing Technology, Design and Research Conference (AIMTDR 2014), India, 2014.
J.J.Sheu and C.H. Yu “Preform and forging process designs based on geometrical features using 2D and 3D FEM simulations,” The International Journal of Advanced Manufacturing Technology 44, 244–254, 2009.
C. H. Lee and T. Altan “Influence of flow stress and friction upon metal flow in upset forging of rings and cylinders,” J. Eng. Ind. 94(3), 775-782, 1972.
R.Ebrahimi and A .Najafizadeh “A new method for evaluation of friction in bulk metal forming,” Journal of Materials Processing Technology 152(2), 136-143, 2004.
T. Gangopadhyay, D.K.Pratihar, and I.Basak, “Expert system to predict forging load and axial stress,” Applied Soft Computing 11(1), 744-753, 2011.

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