發(fā)布時間：2019-03-08 17:28

【摘要】：針對兩直臂間距較小、展平時發(fā)生干涉的等厚板材磁力支架零件,提出磁力支架零件步進式等厚沖鍛成形新工藝,該工藝首先使用沖壓制造出兩直臂間距較大的板材零件,再分幾個工步拉深兩直臂的連接載體,逐步縮短兩直臂間距直到目標間距為止,每個工步通過等厚沖鍛工藝將局部增厚的材料減薄到原板材厚度。運用理論分析和試驗方法,分析及優(yōu)化拉深兩直臂連接載體的形狀,建立兩直臂連接載體的流線型拉深的數(shù)學模型,基于該數(shù)學模型,以磁力支架零件無工藝缺陷為目標,采用數(shù)值模擬優(yōu)化流線型拉深工藝參數(shù)且得到磁力支架等厚沖鍛成形的步進系數(shù)。研究結果表明,運用步進式等厚沖鍛新工藝三個工步可以制造出無工藝缺陷的磁力支架零件,試驗結果同數(shù)值模擬結果吻合。
[Abstract]:A new step-by-step equal thickness stamping forming process for magnetic support parts of equal thickness plate with small spacing between two straight arms and interference at normal time is presented. Firstly, the sheet parts with large spacing between two straight arms are made by stamping. The connecting carrier of the two straight arms is divided into several step drawing steps, and the distance between the two straight arms is shortened gradually until the target spacing. Each step reduces the locally thickened material to the thickness of the original plate by the equal thickness forging process. The shape of two-arm connecting carrier is analyzed and optimized by means of theoretical analysis and test method, and the mathematical model of streamlined drawing of two-arm connecting carrier is established. Based on this mathematical model, the magnetic support parts are free of process defects. The parameters of streamline drawing process are optimized by numerical simulation and the step coefficient of equal thickness forging of magnetic support is obtained. The results show that three steps of step-by-step equal thickness forging process can be used to produce magnetic support parts without process defects, and the experimental results are in good agreement with the numerical simulation results.
【作者單位】： 寧波工程學院機械學院;合肥工業(yè)大學材料科學與工程學院;
【基金】：國家自然科學基金(51275251) 浙江省自然科學基金(Y1111068)資助項目
【分類號】：TG316

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