Control of ring rolling with variable thickness and curvature
Control of ring rolling with variable thickness and curvature
复制标题
变厚度和曲率环件轧制的控制
DOI：
10.1007/s12289-019-01475-6
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发表时间：
2019
影响因子：
2.4
通讯作者：
Arthington M
中科院分区：
文献类型：
--
作者：
Arthington M
径向-轴向环轧制（RARR）是一种工业锻造工艺，用于制造坚固的无缝金属环。传统上，环被制成具有恒定横截面的圆形。在这项工作中，我们展示了一种传感和控制策略，使用标准RARR硬件创建具有可变径向壁厚和可变曲率的环。这有许多潜在的有用的应用，但也提供了如何控制这些属性的传统RARR的理解。该传感使用校准的摄像机来拍摄环顶表面的一系列图像。采用图像处理技术对圆环材料进行了现场测量和跟踪。环的完整状态由环的厚度和曲率作为其体积分数的函数表示，其通过将未被遮挡区域的测量值与其他地方的环形状的估计值相结合来计算。此外，我们提出了一种标记技术，用于跟踪材料，因为它旋转通过轧机，即使在环的显着变形已经发生。我们表明，环具有广泛的变化范围内的局部厚度和曲率可以形成使用传统的RARR硬件和摄影测量状态测量技术，结合开环调度和反馈控制的厚度和曲率。具有可变厚度和非圆形形状的环已经使用数值模拟虚拟地生产，并且在现实中使用建模粘土作为材料来模拟锻造温度下的金属。我们证明了这种技术扩展了标准RARR硬件可实现的形状范围。
Radial-Axial Ring Rolling (RARR) is an industrial forging process for making strong, seamless metal rings. Conventionally, rings are made circular with constant cross-section. In this work we demonstrate a sensing and control strategy to create rings with variable radial wall thickness and variable curvature using standard RARR hardware. This has a number of potentially useful applications but also provides an understanding of how to control these properties for conventional RARR. The sensing uses a calibrated video camera to take a series of images of the ring top surface. Image processing is employed to measure and track the ring materialin-situ. The complete state of the ring is represented by the ring thickness and curvature as a function of its volume fraction, which is computed by combining the measurements from the unoccluded areas with estimates of the ring shape elsewhere. Additionally, we present a marking technique for tracking of material as it rotates through the rolling machine, even after significant deformation of the ring has occurred. We show that rings with a wide range of variation in local thickness and curvature can be formed using conventional RARR hardware and a photogrammetric state measurement technique, combined with open-loop scheduling and feedback control of thickness and curvature. Rings with both variable thickness and non-circular shapes have been produced virtually using numerical simulations and in reality using modelling clay as a material to simulate metals at forging temperatures. We demonstrate that this technique extends the range of shapes achievable with standard RARR hardware.
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影响因子：
7.3
作者：
J. Minton
通讯作者：
J. Minton
非对称轧制曲率趋势的荟萃分析
DOI：
10.1016/j.proeng.2017.10.896
发表时间：
2017
期刊：
Procedia Engineering
影响因子：
--
作者：
J. Minton;E. Brambley
通讯作者：
E. Brambley
DOI：
10.1109/cca.2015.7320815
发表时间：
2015-11
期刊：
2015 IEEE Conference on Control Applications (CCA)
影响因子：
--
作者：
M. Arthington;Christopher J. Cleaver;J. Allwood;S. Duncan
通讯作者：
M. Arthington;Christopher J. Cleaver;J. Allwood;S. Duncan
使用低成本硬件实时测量环轧几何形状
DOI：
10.1109/control.2014.6915208
发表时间：
2014
期刊：
--
影响因子：
--
作者：
Arthington M
通讯作者：
Arthington M
使用橡皮泥模拟铁水棱柱块的动态压缩
影响因子：
7.3
作者：
S. Aku;R. Slater;W. Johnson
通讯作者：
W. Johnson