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一、前言冷挤压是少无切削加工的先进工艺,它具有生产率高,材料利用率高,质量好,成本低的优点,在各行业中已广泛应用。但有色金属冷挤压毛坯仍采用锯切、车床切断、光洁冲裁等方法制备,不是生产效率低,就是材料利用率低。在有色金属冷挤压生产中,材料费在零件成本中占有较大的比重,故原毛坯制备工艺是不经济的,而传统的剪切法又达不到冷挤压毛坯所要求的精度和光洁度,这就提出了棒料精密剪切的任务。
First, the preface Cold extrusion is less advanced machining without cutting, it has high productivity, high material utilization, good quality, low cost advantages, has been widely used in various industries. However, non-ferrous metal extrusion cold extrusion is still using sawing, lathe cutting, smooth blanking and other methods of preparation, not the production efficiency is low, or the material utilization is low. In the non-ferrous metal cold extrusion production, material costs occupy a large proportion of the cost of the parts, so the original rough preparation process is not economical, and the traditional shear method can not reach the required precision cold extrusion blank and Finish, which put forward the task of precision cutting bar material.