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对某自动变速器制动器钢片和摩擦片故障现象进行了深入细致地分析,发现由于热负荷集中于钢片内半径区域,引起制动器钢片波浪形翘曲变形,从设计、装配、试制加工、材料热处理及零件质量方面综合排查得知,钢片厚度薄、支撑结构设计不合理和碟形弹簧特性不一致是导致制动器故障的主要原因。针对该原因,利用ANSYS软件对钢片的厚度进行优化,对碟形弹簧进行筛选,按照不同特性进行分组使用,使制动器的寿命有了明显提高,并通过台架耐久试验,有效地解决了试验中制动器的故障问题。
A detailed analysis of the fault phenomena of the steel plate and the friction plate of an automatic transmission has been made. It is found that due to the heat load concentrated in the inner radius region of the steel plate, the wavy deformation of the brake steel plate is caused. From the design, assembly, trial manufacture, Heat treatment and parts quality comprehensive investigation revealed that the thin thickness of the steel, the support structure design is not reasonable and inconsistent disc springs are the main causes of brake failure. For this reason, the use of ANSYS software to optimize the thickness of the steel plate, the disc spring screening, grouped according to different characteristics, so that the life of the brake has been significantly improved, and through bench durability test, effectively solve the test In the brake problem.