型材挤出模应具有与制件形状一样的型孔,且需求出材料一致流动的按触面深度,现在,首先由设计人员根据经验决定深度,试模后,由熟练的工人进行长期修整。在英国自动化生产咨询研究公司的协助下,Hobson公司的D、stewart和G·Nicholson研制了以下的制模方法。 (1)在圆形模坯中用线切割加工型腔通孔(第一步)。 (2)用专用压力机将特制的石蜡压入通孔中(第二步)。这时流动性好的部分压入的 Profile extrusion dies should have the same shape as the part shape and require a consistent depth of perforation of the material. Now, firstly, the designer determines the depth based on experience. After the trial mode, long-term finishing by a skilled worker. Hobson’s D, Stewart, and Nicholson have developed the following modeling methods with the help of ABA. (1) In the circular die blank machining cavity through-hole (first step). (2) Press the special paraffin into the through hole with a special press (second step). At this time, a good liquidity is pushed in