In traditional technology, cup-shaped thin-walled inner gear is produced by stamping two pieces of the part separately, and then welding together.
在传统工艺中，杯形薄壁内齿轮采用切削制齿与焊接工艺相结合的方式进行生产。
2
As a successively and locally plastic deformation process, ball spinning is applied in order to manufacture high-strength and high-precision thin-walled tubular part with longitudinal inner ribs.
作为一种连续局部塑性成形工艺，滚珠旋压被应用于制造高强度、高精度的纵向内筋薄壁筒形件。
3
The number of stiffened plate, convex platform part or to prevent cold-lap thin-walled place, must improve liquid aluminum liquidity. Mould temperature should be relative improve.