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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 single-factor experiment design method was used to obtain the inner diameter and outer diameter at different axial positions of the spinning component. The distribution of inner diameter diameter expansion, outer diameter deviation and wall thickness deviation along the axial direction was obtained by This obtained the influence of process parameters on the dimensional accuracy of spinning parts. The results show that the feed ratio has the most influence on the diameter expansion of the inner diameter of the spinning component during the positive displacement forming of the cylindrical component, and the thinning rate takes the second place. With the increase of the feed ratio and the thinning rate, the maximum The smaller the radial offset is, the smaller the radial offset is in favor of reducing the maximum diameter diameter expansion. The influence of the process parameters on the outer diameter deviation and the wall thickness deviation of the spinning components is basically the same. With the reduction rate and diameter The increase of the misalignment distance, the deviation of outside diameter and the wall thickness deviation all increased. The deviation of the outside diameter and the wall thickness deviation at the bottom and the mouth of the spinning part increased with the increase of the feed ratio. The deviation of outer diameter first increases and then decreases with the increase of feed ratio.