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七十年代以来,国外广泛采用线切割机加工冷冲压模具。随着数控技术的发展,机床的加工精度日益提高。同时,机床结构由只能切割垂直刃口发展到用四轴控制走丝装置,加工出任何形状的斜刃口(即可加工出凹模刃口后角)。日本一些企业利用线切割机的上述特征,从凹模坯料上同时加工出凸模。[1]这表明能用该工艺加工出任何间隙的冷冲模,并有一套相应的工艺措施。目前,国内能切割斜刃口的线切割机尚未批量生产。1982年6月我们参考国内外有
Since the seventies, foreign widely used wire cutting machine cold stamping die. With the development of numerical control technology, the machining accuracy of the machine tool is increasing day by day. At the same time, the machine tool structure can only be cut from the vertical edge of the development of the use of four-axis control wire device, processing any shape of the oblique edge (that can be machined die edge clearance). Some Japanese companies use the above characteristics of wire cutting machine, die from the die while processing the punch. [1] This shows that the process can be used to produce any gap in the die, and a corresponding set of process measures. At present, the domestic can be inclined cutting edge cutting machine has not yet mass production. June 1982 we have reference at home and abroad