汽车冲压零件的设备许用载荷分析  

Analysis on allowable load of equipment for automobile stamping part

作　　者：韦韡 李恒佰 张峰 韦庆峰 周江奇 

机构地区：[1]上汽通用五菱汽车股份有限公司,广西柳州545007

出　　处：《锻压技术》2017年第9期87-90,共4页Forging & Stamping Technology

基　　金：国家重点研发计划(2016YFB0300405)

摘　　要：根据多连杆压力机的行程曲线特点,提出了以80%公称力作为公称力控制线,并据此绘制压力机载荷许用区间图,即将力-行程曲线划分为安全区、临界区和危险区。当成形力处于公称力控制线下方,则设备载荷能够满足成形要求;当成形力处于公称力控制线和公称力曲线之间的临界区,需要进一步对变形功进行校核。另一方面,采用数值积分的方法对成形力和作用距离进行积分,得到变形功,与压力机许用变形功进行比较,提出能量校核的前提和校核方法。最后提出了成形力和变形功校核流程图,并用于前门内板等零件的分析。结果表明,采用22500 k N压力机满足前门内板一模双件载荷要求。Aeeording to the characteristics of stroke curve for a multi-link press, a control line of 80% of nominal pressure was proposed, and the allowable interval diagram of press load was drawn, namely, the three-stroke curve was divided into safety zone, critical zone and danger zone. When the forming force located below the control line of nominal pressure, a requirement of equipment load considered could be met, while, the forming work was required to check further when Ihe forming force located at the critical zone between the control line and the curve line of nominal pressure. On the other hand, the forming work was obtained by a numerical integrating forming force from working distance. Then, the result was compared with the allowable forming work of press, and a precondition as well as the method of ca- pacity verification were proposed. Finally, the flow chart of forming force and forming work were presented to analyze front door inner pan- el. The result shows that 22500 kN press can meet requirement of load for double-cavity front door inner panels.

关 键 词：冲压零件 许用载荷 变形功 公称力 力-行程曲线 

分 类 号：U466[机械工程—车辆工程]