本文论述了用上限单元法(UBET)进行反向模拟的技术要点,提出了寻求最佳坯料和预成形工步优化设计的方法。并结合实际的齿轮锻件设计了最佳工艺方案,还将模拟设计结果进行了生产验证,同工厂常规生产相比,不仅降低了设备吨位,而且材料利用率大大提高,表明了模拟式设计方法的可行性、优越性和良好前景。 In this paper, the technical points of reverse simulation by the upper bound element method (UBET) are discussed, and the method of finding the best blank and pre-forming step optimization design is proposed. And the actual gear forging design the best process plan, but also the simulation results of the design verification of the production, compared with the conventional factory production, not only to reduce the tonnage of equipment, and material utilization greatly increased, indicating that the analog design method Feasibility, superiority and good prospects.