高精度多段速热成形伺服油压机关键点设计
2021-07-28周松涛



[摘 要]文章介绍了高精度多段速热成形伺服液压机的特点,以及分析了热成形压机液压系统原理图。具体阐述了汽车轻量化的趋势及本公司研发第二代热成形伺服压机存在的问题,引出第三代热成形伺服压机设计需要解决的要点,接着介绍多段速、高精度伺服液压机的油路伺服系统的设计要点,最后介绍第三代伺服压机的运行效果达到前期设计预期。此伺服压机的研制,奠定了公司在轻量化设备方面的核心竞争力,打破了国外设备的垄断。
[关键词]热成型;高精度、多段速控制;液压机;液压伺服系统;DELTA轴控制系统;凸轮同步
[中图分类号]TG315.46 [文献标志码]A [文章编号]2095–6487(2021)05–00–03
Design of Key Points of High Precision Multi Stage Fast
Hot Forming Servo Hydraulic Press
Zhou Song-tao
[Abstract]The article introduces the characteristics of the high-precision multi-speed hot forming servo hydraulic press, and analyzes the schematic diagram of the hydraulic system of the hot forming press. It specifically elaborated on the trend of automobile lightweight and the problems of the company's second-generation thermoforming servo press, and led to the main points that need to be solved in the design of the third-generation thermoforming servo press. Then it introduced the oil of the multi-speed, high-precision servo hydraulic press. The design points of the road servo system, and finally introduce the operation effect of the third-generation servo press to meet the pre-design expectations. The development of this servo press established the company's core competitiveness in lightweight equipment and broke the monopoly of foreign equipment.
[Keywords]thermoforming; high precision, multi-stage speed control; hydraulic press; hydraulic servo system; delta axis control system; cam synchronization
汽車轻量化是国家节能减排的硬性要求,目前无论商用车还是乘用车都在考虑轻量化的方案。例如,特斯拉采用6500 t压铸机整体压铸车身底盘件,70多个零件变成一个高压压铸整体,既减少了车身重量同时又减少制造工序,降低制造成本。我国的轻量化技术与国外存在着一定差距,但是随着国内自主品牌汽车行业的快速发展,每一个自主品牌也在奋起直追,不断对标竞争对手,寻求降低汽车重量的方法,以达到节能减排的目的。
高强度钢、铝合金、镁合金与碳纤维是汽车轻量化发展的主要方向。其中高强度热成形零件,相对成本较低,是目前轻量化路线中商业化比较普遍的技术。但是国内热成形技术起步较晚,因此装备这块基本上被德国舒勒和瑞典APT所垄断。国内天锻和合锻也在研发热成形压机,但是速度始终与国外存在较大差距,单个冲次的循坏时间在6~7 s,而竞争对手单个冲次的循环时间在4~5 s。……
