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高矩形件多次引伸工艺设计的关键是中间工序的过渡形状和尺寸的确定,而n-1道的引伸形状及尺寸尤为重要。有不少技术文献推荐了高矩形多次引伸工艺的计算方法和数据,而目前工厂使用较多的是罗曼诺夫斯基给出的方法[1],计算程序繁杂,实际应用上可靠性却不大,往往需要作图调整才行。 资料[2]一文指出:对高正方形n-1道引伸工序应采用圆筒形毛坯,当四角壁间距离X=0.2～0.25r时能保证高正方形周边变形符合均匀条件。但对于高矩形n-1道
The key to the design of the multiple-extension high-rectangle process is to determine the transitional shape and size of the intermediate process. The shape and size of the n-1 lane extension are of particular importance. There are many technical documents recommending the calculation method and data of the high rectangular multiple drawing process. At present, the method used by the factory is more Romanovsky [1], the calculation procedure is complicated, and the practical reliability Not large, often need to adjust the job Caixing. The paper [2] states that cylindrical blanks should be used for high-square n-1 extension. When the distance between tetragonal walls is between 0.2 and 0.25 r, the deformation around the high square can be ensured to conform to the uniform conditions. But for the high rectangle n-1 channel