三維彎管成形之作動路徑設計與最佳化參數研究

The Study on 3D Piper Bender Molding Actuator Path Design and Optimization Parameters

林良偉(Liang-Wei Lin)

指導教授 ： 林瑞璋

國立虎尾科技大學/工程學院/機械設計工程研究所/碩士(2012年)

摘要

本研究主旨為建立一虛擬的CNC彎管機，在實際加工管件之前在電腦上進行模擬，可避免用傳統的人為經驗判斷與試誤法成形，而耗費人工及原料增加製造成本。紡織用併條機上蓋彎管直接由CNC彎管機成形，其彎管需為平滑流順使棉條不阻塞的傳遞，亦可比其它生產之方式節省開發模具費用。
本研究根據田口實驗法來做實驗設計分析，使用CAE有限元素分析軟體Abaqus進行分析其彎曲行為，探討應力應變結果與成形情況，進而得到最佳行程參數。依照最佳行程參數執行三維彎管加工，將加工之彎管使用應變規進行量測實驗，比對模擬分析與實驗數據結果誤差率為6.39%，驗證結果趨於相近，則最佳行程參數之三維彎管成形將可達到減少試彎次數與原料成本。利用此方法分別設計模擬出不同尺寸管件三維彎管成形，應用數值方法迴歸分析，建構出公式化最佳行程方程式並預測其結果。

關鍵字

田口實驗法 ； 有限元素分析 ； 三維彎管成形 ； 迴歸分析

並列摘要

This study developed a virtual CNC piper bender, and conducted computer simulation before the actual processing of pipes. As conventional manual experiential judgment and the molding by the trial and error method would cost labor and raw materials, thus increasing the manufacturing costs, the proposed system can solve this problem. When the elbow pipe of the textile drawing frame is directly molded by the CNC piper bender, it is smoother for the unblocked transmission of cotton slivers while saving the mold development cost.
This study applied the Taguchi method for experimental design, and used the CAE finite-element analysis software Abaqus to analyze the bending behaviors. The stress-strain and molding results were discussed to obtain the optimal travel parameters. According to the optimal travel parameters, this study implemented the 3D pipe bending processing and used the stress-strain gauge to measure the processed elbow pipes. By comparing the simulation analysis and the experimental data errors 6.39%, the verification results were close, proving that 3D pipe bending molding with the optimal travel parameters can reduce times of bending trials and raw material costs. This study successfully designed and simulated 3D pipe bending molding for pipes of different sizes, and employed the numerical method of regression analysis to establish the prediction equation for the optimal travel parameters.

並列關鍵字

Taguchi experimental method ； finite-element analysis ； 3D pipe bending molding ； regression analysis

參考文獻

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