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以某汽车油箱支架结构件单侧载体多工位级进模为研究对象,通过对冲压成形过程进行全工序数值模拟获得了模具结构受力情况;针对第3工位中修边凸模受侧向力较大的现象对其进行偏载分析,获得了凸模的侧向变形量,并提出采用靠块结构来减小凸模的侧向变形;选择第3、第4、第9工位和合模时受力较大的冲压时刻,利用载荷映射系统将模具受力映射到结构分析的有限元模型上,对模具结构进行静力分析,并获得了模具结构在冲压方向和侧向的变形量;采用电阻应变测量方法对该多工位级进弯曲模在冲压成形过程中的应变值进行了测量。结果表明,采取靠块结构可有效地减小单侧载体多工位级进弯曲成形时的偏载,应变实测值与理论分析结果吻合较好。
Taking a single-carrier multi-position progressive die as the research object, a full-process numerical simulation of the stamping process was carried out to obtain the force condition of the die structure. In the third working station, The partial load analysis was carried out on the phenomenon of large force, the lateral deformation of the punch was obtained and the abutment block structure was adopted to reduce the lateral deformation of the punch. The third, fourth and ninth workstations And stamping moments when the mold clamping force is greater, the load mapping system is used to map the mold forces to the finite element model of the structural analysis, the static analysis of the mold structure and the deformation of the mold structure in the stamping direction and the lateral direction The strain values of the multi-station progressive bending die during stamping were measured by resistance strain measurement. The results show that the abutment block structure can effectively reduce the partial load of single-carrier multi-position progressive bending process, and the measured values agree well with the theoretical analysis.