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| Asymmetric conventional metal spinning was performed in this study to break through the limitation of ordinary axisymmetric spinning. A synchronous spinning machine was developed for this purpose; in this case, the mandrel motion, mandrel feed, and roller feed were synchronized by pulse control. Trial spinning experiments were carried out on a 1-mm-thick aluminum sheet to obtain an asymmetric truncated-elliptical-cone-shaped product. The roller path was traced using a control software by taking into account the errors caused by the step pulse control. Asymmetric sheet metal forming was successfully carried out by using the developed synchronous spinning method. The characteristics of asymmetric spinning were discussed by comparing the shape of the product, strain distributions, and force components with those obtained in the case of axisymmetric spinning. |
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武汉一心一译 
捐助贵宾 (著名写手)
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爱与雨下: 金币+1 2016-06-13 22:26:49
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爱与雨下: 金币+1 2016-06-13 22:26:49
txljy(fjtony163代发): 金币+40, 代发 2016-07-14 02:24:59
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Asymmetric conventional metal spinning was performed in this study to break through the limitation of ordinary axisymmetric spinning. A synchronous spinning machine was developed for this purpose; in this case, the mandrel motion, mandrel feed, and roller feed were synchronized by pulse control. Trial spinning experiments were carried out on a 1-mm-thick aluminum sheet to obtain an asymmetric truncated-elliptical-cone-shaped product. The roller path was traced using a control software by taking into account the errors caused by the step pulse control. Asymmetric sheet metal forming was successfully carried out by using the developed synchronous spinning method. The characteristics of asymmetric spinning were discussed by comparing the shape of the product, strain distributions, and force components with those obtained in the case of axisymmetric spinning. 本文研发了一种同步旋压机，通过实施传统非对称金属旋压工艺，突破普通轴对称旋压的限制。 因此，芯辊运动，芯辊进给，以及滚柱进给都通过脉冲控制达到了同步。 在1mm厚的铝板上进行旋压工艺试验，可以获得非对称的截短后的椭圆锥形产品。 考虑到步脉冲控制误差，运用一种控制软件实现滚道跟踪。御用一种成熟的同步旋压方法，可以成功的实施非对称薄板成形工艺。 通过比较轴对称旋压与非对称旋压产品的形状，应变分布，以及分力，我们讨论了非对称旋压工艺的特点。 |
2楼2016-06-12 08:28:22