针对锥齿轮轴冷挤压成形过程中挤压件齿形冲不满等问题,尝试采用一种新的冷挤压工艺,即在冷挤压成形过程中给凹模施加周期性振动激励信号。运用DEFORM-3D有限元分析软件构建系统模拟模型,分别对有、无给凹模施加周期性振动两种挤压情形进行模拟,并进行多方面的比较分析。模拟和分析结果表明,相较于凹模固定不动挤压的金属流动最大速度37.8 mm/s,给凹模施加周期性振动能进一步促进金属流动,流动速度大大提高,最大达到85.6 mm/s,网格流线变形程度变小,应力分布变得较为均匀,增大了塑性变形量,降低了成形抗力。 In order to solve the problem of tooth profile of extrusion during cold extrusion of bevel gear, a new cold extrusion process was attempted to apply periodic vibration excitation signal to the die during cold extrusion. The DEFORM-3D finite element analysis software is used to construct the system simulation model. The two kinds of squeezing cases with and without periodic vibration are simulated and compared in many aspects. The results of simulation and analysis show that, compared with the maximum velocity of metal flowing at 37.8 mm / s, the periodic vibration energy is applied to the die to further promote the metal flow and the flow rate is greatly increased up to 85.6 mm / s , The degree of grid flow line deformation becomes smaller, the stress distribution becomes more uniform, the amount of plastic deformation increases, and the forming resistance is reduced.