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直齿圆柱齿轮冷挤压可控运动凹模成形工艺
英文标题:Forming technology of controlled movable die of spur gear in cold extrusion
作者:        王伟钦 刘百宣 
单位:郑州机械研究所 
关键词:直齿圆柱齿轮 冷挤压成形 运动凹模 成形载荷 塌角 
分类号:TG376
出版年,卷(期):页码:2016,41(9):84-87
摘要:

 为降低直齿圆柱齿轮冷挤压成形载荷和改善齿形角隅部分充填性,在分析直齿圆柱齿轮成形过程中金属流动

 
特性基础上,提出了采用可控运动凹模的成形工艺。利用Deform-3D软件对此成形工艺过程中的金属流动规
 
律、成形载荷、成形缺陷进行了数值模拟分析,并对该工艺进行了优化。分析结果表明,当凹模速度为冲头
 
速度的1/2时,成形过程中齿形充填均匀、齿形角隅部分充填饱满,成形载荷最小,较传统单向挤压成形载
 
荷降低了约20%。对优化后的成形工艺进行了成形试验研究,试验成形齿轮齿形饱满,无塌角缺陷,试验结
 
果与模拟结果基本吻合。

 In order to reduce the forming load of spur gear in cold extrusion and improve the metal 

 
filling in tooth corner, a controlled movable die forming process was developed by analyzing 
 
metal flow characteristics of spur gears in forming process. The regulation of metal flow, 
 
forming load and forming defects in the forming process were numerically simulated by Deform-
 
3D, and the forming process was optimized. The analysis results show that when the speed of 
 
die is half of punch speed, the tooth shape is filled evenly in the forming process with full 
 
filling at its corner portion, and the forming load is the smallest. Furthermore, the forming 
 
load is reduced about 20% compared with that of traditional one-way extrusion forming. The 
 
optimal process was studied by experiment, and the experimental gear tooth forms fully without 
 
angle collapsings. The simulation result is in agreement with experimental results.
 
基金项目:
国家科技支撑计划资助项目(2006BAF04B06)
作者简介:
刘 丹(1981- ),男,硕士,工程师
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