薄壁深抛物线形零件固体颗粒介质成形工艺

发布时间：2018-06-20 13:43

本文选题：抛物线形零件 + 固体颗粒介质　；参考：《中国机械工程》2015年24期

【摘要】：薄壁抛物线形壳体成形过程为拉深和胀形两种变形模式的复合,极易发生起皱和破裂。固体颗粒介质成形是采用固体颗粒代替刚性凸模或凹模(或弹性体、液体)对板料进行成形的工艺。板材在颗粒介质内压的作用下成形,可以有效防止抛物线形件拉深成形过程中侧壁的起皱;由于颗粒内压是非均匀分布的,故可以有效控制抛物线形件成形过程中的破裂,提高板材的成形极限。根据固体颗粒介质成形工艺的特点,提出了两次成形薄壁深壳体零件的工艺,建立了数值分析模型,通过数值模拟和试验对该成形过程和工艺参数进行了分析。结果表明,采用固体颗粒介质成形工艺过程简单、成形工件壁厚分布均匀、表面质量好、回弹小。
[Abstract]:The forming process of thin-walled parabolic shell is a combination of drawing and bulging, and it is easy to wrinkle and crack. Solid particle medium forming is a process in which solid particles are used instead of rigid punch or die (or elastomer, liquid) to form sheet metal. The sheet metal forming under the action of the internal pressure of the particle medium can effectively prevent the wrinkle of the side wall during the deep drawing of the parabolic part, and because the pressure inside the particle is not uniformly distributed, it can effectively control the rupture in the forming process of the parabolic part. Improve the forming limit of sheet metal. According to the characteristics of solid particle medium forming process, the process of twice forming thin-walled and deep shell parts is put forward, the numerical analysis model is established, and the forming process and process parameters are analyzed by numerical simulation and experiment. The results show that the process of solid particle medium forming is simple, the wall thickness distribution is uniform, the surface quality is good, and the springback is small.
【作者单位】：先进锻压成形技术与科学教育部重点实验室(燕山大学);燕山大学;北京动力机械研究所;
【基金】：国家自然科学基金资助项目(51305385) 河北省高等学校科学技术研究青年基金资助项目(QN20131080)
【分类号】：TG386

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