The Optimal Design for the Shape of Fluid Cavity in Hydromechanical Blanking

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Project title

Code/計畫編號

NSC102-2221-E019-065

Translated Name/計畫中文名

液壓精密下料流道溝形之最佳設計

Project Coordinator/計畫主持人

Jang-Ping Wang

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Marine Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=8014139

Year

2013

Start date/計畫起

01-08-2013

Expected Completion/計畫迄

31-07-2014

Bugetid/研究經費

708千元

ResearchField/研究領域

機械工程

本論文主要建立一套最佳化製程參數，應用於液壓式精密下料法(Fine Hydro-Mechanical Blanking)中。本研究所使用模具為傳統式精密下料模具之改良，考慮傳統精密下料模具中V形壓環損耗問題以及底部推料塊的推力不足，研究中使用之模具部分位置以液壓方式取代，並使用田口品質工程法(Taguchi Experimental Method)探討各參數因子之間的影響，其中因子包含：背壓力、U形流道壓力、U形流道寬度、U形流道深度及壓料板壓力。齒輪應用廣泛，當中又以擺線形齒輪(Cycloid gear)之咬合精度最高，故本研究以擺線形齒輪之下料為主，驗證液壓式精密下料對於複雜形狀之下料的可行性。研究結果顯示，在最佳化條件之下液壓式精密下料所得到成品光亮面約達板料厚度92%，與有限元素模擬相較之下也相當近似，證明液壓式精密下料法不僅品質優於精密下料技術，也可應用於複雜形狀之下料成形。This paper builds optimal parameters for the fine hydro-mechanical blanking. In this approach, the wear problem of V-ring could be avoided. The ejector force of traditional fine blanking can be replaced by back pressure of the hydro liquid. It can decrease the phenomenon of roll-over. Taguchi experimental method is used to investigate the relations between these parameters and the burning length; these parameters are the back pressure, the flow pressure in U-type of cavity, the width and high of U-type of cavity and the holding force. The cycloid gear used for experimental test is adopted owing to the need of industry for the precise size. The result shows the optimal burning surface can reach 92% of high of the work-piece and the solution obtained from FEM also has the same result. It is shown that this approach can fulfill the more complex shape of blanking.

Keyword(s)

液壓式之機構
精密下料
最佳流道溝形設計
混合式優化田口實驗法 (HPT)
有限元素法(FEM)
Hydro-mechanical mechanism
Fine blanking
Optimization design of the type for fluid cavity
Hybrid optimization with Taguchi experimental method(HPT)
Finite element method (FEM)

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The Optimal Design for the Shape of Fluid Cavity in Hydromechanical Blanking

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