摘要
针对半轴齿轮热—冷复合锻造中冷锻整形时出现的充不满缺陷,利用UG、Geomagic-Design和Deform-3D等软件,对冷锻毛坯(热锻成形的工件)进行了重新设计和冷锻整形工序仿真模拟,全面考查齿厚、齿高参数变化对产品质量的影响。从模拟结果来看,当冷锻整形开始合模时,毛坯初始位置齿顶和冷锻模具型腔之间的间隙越大(齿厚增加越大/齿高减小越大)时,终锻时所需的锻压力越大,在产品小端齿顶处越易形成折叠缺陷。毛坯初始位置齿顶与型腔贴合(齿厚增加量为零或为负),则不易产生折叠缺陷,齿侧和冷锻模具型腔之间的间隙越大(实际齿厚越小),所需锻压力越大。经过实际生产验证,在相应的齿轮参数条件下,冷锻毛坯比冷锻模具型腔轮廓的齿高增加0.1 mm、齿厚不变时,冷锻整形后齿槽和齿高全部压满,成型质量好,产品废品率达到预期要求。
In this paper,aiming at the full and unsatisfactory defects in the cold forging shaping in the"hot-cold compound forging"of the side gear,the cold forging blank(the workpiece formed by hot forging)is re-reformed by using software such as UG,Geomagic-Design and Deform-3D.The design and cold forging shaping process simulation simulation comprehensively examines the influence of tooth thickness and tooth height parameter changes on product quality.From the simulation results,when the cold forging shaping begins to close the mold,when the gap between the initial position of the blank and the cavity of the cold forging die is larger(the greater the increase in tooth thickness/the greater the decrease in tooth height),the final forging the greater the required forging pressure,the easier it is to form folding defects at the tooth tip of the small end of the product;the initial position of the blank is close to the tooth tip and the cavity(the increase in tooth thickness is zero or negative),it is not easy to produce folding defects.The larger the gap between the tooth side and the cavity of the cold forging die(the smaller the actual tooth thickness),the larger the required forging pressure.After actual production verification,under the conditions of the gear parameters in this paper,when the tooth height of the cold forging blank is increased by 0.1 mm compared with the cold forging die cavity profile,and the tooth thickness is unchanged,the tooth slots and tooth heights are fully pressed after cold forging shaping.The quality is good,and the product rejection rate meets the expected requirements.
作者
李林鑫
陈显均
崔志亮
冯铃
Li Linxin;Chen Xianjun;Cui Zhiliang;Feng Ling(Sichuan Vocational College of Chemical Technology,Luzhou Sichuan 646005,China;Sichuan Zhongyou Machinery Co.,Ltd.,Ya'an Sichuan 625000,China)
出处
《山西冶金》
CAS
2024年第1期1-3,共3页
Shanxi Metallurgy
基金
泸州市科技计划课题:基于Deform-3D的汽车差速器齿轮二次(温—冷)精密锻造成型方法研究(2021-JYJ-89)。
