科研之友
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摘要
In this article, novel precision bar cropping machinery, with a modified rotary swaging machine, which has been extended by the addition of a stroke adjuster, was designed and built. By adjusting the strike frequency and the radial displacement, a crack call be made to propagate quickly and regularly, leading to a final regular separation of the bar. Precision cropping experiments on several metal bars were conducted, which can be directly used ill the subsequent process, such as cold-extrusion and cold-forging and so on because of the high-quality cross-section, high geometric and weight precision using this cropping device.
