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针对继电保护箱体底板导轨加工过程中容易发生较大的翘曲变形、加工面回弹较大的问题,通过分析两种加工工艺——辊压与冲压工艺的特点,利用Ansys软件对底板导轨受力进行仿真分析,模拟底板导轨的受力变形状况,并依据底板尺寸设计出相应的模具,同时对冲压模具与冲压工艺进行改进,最后选取机床进行试验对比,验证了模拟结果与生产实际基本一致。结果表明:辊压成形变形最大约为20 mm,变形较大,对螺钉紧固、插件安装有较大影响;冲压工艺变形为2 mm,装配后基本满足要求。该冲压工艺方法解决了精密机箱加工变形较大的问题。
Aiming at the problems that the warping deformation and the springback of the processing surface are easy to happen during the process of the guide rail of the relay protection box, the paper analyzes the two processing technologies - the characteristics of the rolling and stamping process, The stress of the guide rail is simulated and analyzed, the force and deformation of the base rail are simulated, and the corresponding mold is designed according to the size of the base board. At the same time, the stamping die and the stamping process are improved. Finally, the machine tool is selected for comparison. Basically the same. The results show that the maximum deformation of roll forming is about 20 mm and the deformation is large, which greatly affects the screw fastening and the installation of the insert. The deformation of the stamping process is 2 mm, which basically meets the requirements after assembly. The stamping process method to solve the problem of large deformation of precision chassis processing.