基于剪普复合旋压方法的双轮同步旋压技术

以解决小平面封底、二次曲线型、大直径、厚壁头罩类壳体旋压成形难题为目的,提出集成了厚壁板坯短剪切渐进成形轨迹设计、普旋预成形与短剪切成形轨迹配合设计、镜像双旋轮同步旋压精确控制、加热旋压控温曲线标定等技术内容,有别于传统的剪切旋压、普通旋压的单模具剪普复合旋压方法。通过试验,摸索了多道次普旋预成形和单模具剪普复合旋压成形基本规律,总结了旋压轨迹设计方法。实现了二次曲线厚壁头罩单模具一次成形,直径、壁厚、轮廓度等主要精度误差均小于0.2 mm。

Processing Technology of Double-Roller Mirror Spinning Based onConventional-Shear Composite Spinning

Aming at the processing problem of the thick wall head cover shell which has small plane back cover,

quadratic curve shape,large diameter,we put forward a new method of conventional-sheear composite spinning using

single die,which is different from the traditional conventional spinning and shear spinning,integrating several technology

contents including thick plate short shear incremental forming path design,and conventional spinning preforming

and short shear forming path design,the controlof double-roller mirror spinning,hot spinning temperature curve calibration.

Through trial,we explore the basic rules of the multiprocess conventional spinning performing and conventional-

sheear composite spinning using single die, summarize the spinning trajectory design method. Single-die forming of

quadratic curve shape thick wall head cover is realized. Accuracy error such as diameter, wall thickness,profile are

less than 0. 2 mm.