我们往往必须把角铁或槽钢成形至某种圆弧半径。并无十分必要采取专用设备或工具。因此,我们不得不采取宜于加工的措施。 解决办法是:设计制造能装置在液压机上使用的模具,本图所示的是用于此项工作所需的模具。仅须简便地为所需要成形的圆弧半径配制一金属样板或纸质样板,然后将 We often have to shape the angle iron or channel to some arc radius. It is not necessary to take special equipment or tools. Therefore, we have to take measures that are suitable for processing. The solution is to design and build a mold that can be used on a hydraulic press. This figure shows the mold required for this job. Only one metal template or paper template must be easily and conveniently prepared for the desired radius of the arc to be formed,