基于响应面法的整体式结合齿齿轮温锻工艺优化  

Optimization on warm forging process for monoblock combined tooth gear based on response surface method

作　　者：吴先洋 Wu Xianyang(Shanghai Automobile Gear Works,Shanghai 201807,China)

机构地区：[1]上海汽车变速器有限公司

出　　处：《锻压技术》2018年第8期27-34,共8页Forging & Stamping Technology

摘　　要：针对整体式结合齿齿轮温锻过程成形载荷大、锻件充填不完整和模具磨损大等缺陷,以DCT250双离合自动变速器中某整体式结合齿齿轮作为研究对象,建立了以模具预热温度、坯料加热温度、摩擦因子和锻造速度为设计变量,以锻造过程成形载荷、齿形模具最大磨损量和锻件成形率为目标的二次多项式响应面模型。通过响应面法与有限元模拟相结合的方法对温锻过程的工艺参数进行优化,从而得到该产品的最优锻造工艺。经过实际生产验证发现,最优锻造工艺能够在较低成形载荷的条件下锻造出合格的锻件,并且齿形模具的使用寿命由最初的1000件提高至4500件,有效提高了齿形模具的使用寿命。For the defects of over load,incomplete filling of forging and terrible die wear during warm forging process of monoblock combined tooth gear,the quadratic polynomial response surface model was built for a monoblock combined tooth gear of dual clutch automatic transmission DCT250,which took the pre-heating temperature of die,heating temperature of billet,friction coefficient and forging speed as the design variables,and took the forging load,maximum wear depth of tooth profile die and forming rate of forgings as the optimization goals. Combined the response surface method with finite element method,the process parameters of warm forging process were optimized,and the optimal forging process was obtained. The optimized process was verified by the actual production. The results show that the qualified forgings can be formed under lower forming load with the optimal forging process. Also,the life of tooth profile die is improved from1000 parts to 4500 parts,which improves the life of tooth profile die effectively.

关 键 词：整体式结合齿齿轮 温锻工艺 模具磨损 响应面法 有限元法 

分 类 号：TG315.2[金属学及工艺—金属压力加工]