锻压技术

工艺参数对筒形件错距正旋成形尺寸精度的影响

英文标题：Influences of process parameters on dimensional accuracy in the cylinder stagger forward spinning

作者：吕伟樊文欣陈东宝桑满仙

单位：中北大学

分类号：TG376

出版年,卷(期):页码：2016,41(8):83-88

摘要：

采用单因素试验设计方法，通过测量旋压件轴向不同位置处的内、外径值，获得了旋压件内径扩径量、外径偏差、壁厚偏差沿轴向的分布规律，并由此得到了工艺参数对旋压件尺寸精度的影响规律。结果表明：在筒形件错距正旋成形过程中，进给比对旋压件内径扩径量的影响最大，减薄率次之，随着进给比和减薄率的增大，最大内径扩径量减小，较小的径向错距有利于减小最大内径扩径量；工艺参数对旋压件外径偏差和壁厚偏差的影响规律基本一致，随着减薄率和径向错距的增加，外径偏差和壁厚偏差均增大，旋压件底部和口部位置处的外径偏差和壁厚偏差随进给比的增大而增大，旋压件中部的外径偏差随进给比的增大先增大后减小。

The distributions of inner diameter expansion amount, outer diameter deviation, wall thickness deviation in the axial direction of workpieces were obtained by measuring the inner and outer diameter values at different locations in the axial direction of workpieces, and the influences of process parameters on the dimensional accuracy of workpieces were acquired based on single factor experimental method. The result shows that during the cylinder stagger forward forming, the feed ratio is the most influential factor on the inner diameter expansion amount, and the reduction ratio follows. The biggest inner diameter expansion amount decreases with the increase of feed ratio and reduction ratio. However, a relatively small radial offset is helpful to reduce the biggest inner diameter expansion amount. Furthermore, influences of process parameters on the outer diameter deviation and the wall thickness deviation are almost the same. Both outer diameter deviation and wall thickness deviation increase with the increase of reduction ratio and radial offset. The outer diameter deviation and the wall thickness deviation at the bottom and the mouth of workpieces increase with the increase of feed ratio, while they first increase and then decrease in the middle of workpieces.

基金项目：

山西省自然科学基金资助项目 (2012011023-2)

吕伟(1992-) ，男，硕士研究生樊文欣（1964-），男，博士，教授

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