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指出齿轮轴锻模制造失误是造成锻件出模困难、影响锻模使用寿命的主要原因。通过数学计算分析，得出能顺利脱模的锻件端面形状，从而保证了锻件的质量。
It is pointed out that the manufacturing error of the gear shaft forging die is the main reason that causes the die forging to be difficult to die and affects the service life of the forging die. Through mathematical calculation and analysis, it can be concluded that the shape of the end face of the forging can be successfully released, so as to ensure the quality of the forging.