汽车差速器半轴齿轮新型锻模设计

论述了精锻汽车差速器半轴齿轮原模具结构存在的问题,改进了锻造工艺和锻件设计,设计了新型粗锻模和精压模.新型粗锻模的齿模设在上模,半轴凹模设在下模,坯料定位准确迅速,可实现无飞边粗锻;齿模与热锻件接触时间短,模具温升小,模具寿命高.新型精压模的上模设有顶件装置,锻件半轴的拔模斜度小,锻件半轴的金属敷料少.新型模具可显著提高模具寿命和生产效率,降低材耗和生产成本.

Design of New Die for Precision Forging of Half Axle Gear of Automobile Differential

A discussion is made on the problems of original dies for precision forging of half axle gear of automobile differential,the forging technique and the design of forge piece are improved,and the new type of blocker die and finish forging die is designed.The teeth die of the new type of blocker die is on the upper die,the cavity die of the half axle is on the lower die,so the positing blank is accurate and quick,there is no flash on rough forging,and the time that teeth die touches forging is short,the temperature rise of teeth die is little,the die's lifetime is high.There is a shedder on the upper die of the new type of finish forging die,so that pattern draft angle of half axle of forging is small,oversize for machining is little.As a result of using the new type of forging dies,the die's lifetime and the productivity are greatly increased,the material consumed and the production cost are decreased