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对总体尺寸较长且多个不同方位存在孔位的管状零件,在压铸模设计时,分型面的选择及成型部分的分割将决定抽芯机构的数量及抽芯方式。转向器壳体压铸模采用了过中心线的平面分型,布置了2个液压抽芯机构及4个机动斜导柱抽芯机构,简化了模具结构,实践证明,该方案合理可行。
For the overall size of a long hole and a number of different positions of the tubular parts, the die-casting mold design, parting surface selection and molding part of the division will determine the number of core-pulling mechanism and core-pulling method. The steering die casting mold adopts the centering line plane typeing, and two hydraulic core pulling mechanisms and four movable beveling core core pulling mechanisms are arranged to simplify the mold structure. Practice has proved that the scheme is reasonable and feasible.