Safety airbag gas generator shell one-inlet and multiple-outlet stretching punching process

The invention provides a safety airbag gas generator shell one-inlet and multiple-outlet stretching punching process. The process is characterized by comprising the following machining steps that S1,a shell formed primarily is fed to a stretching procedure; S2, the shell is sequentially subjected to stretching machining and deep drawing machining in a staggered mode; and S3, a crude formed shellis obtained, wherein the adjacent stretching machining and deep drawing machining of the S2 are in the same direction or in the opposite directions. The process is high in production efficiency and good in machining precision, the service life of dies can be prolonged, the production cost is reduced, and the process is suitable for automatic batch production of safety airbag gas generator shells. 本发明提供种安全气囊气体发生器壳体进多出反拉伸冲压工艺，其特征在于，包括以下加工步骤：S1.将初步成型的壳体送入拉伸工序；S2.对壳体依次交错进行拉伸加工和拉深加工；S3.获得成型壳体的粗品；步骤S2中所述相邻的拉伸加工和拉深加工的加工方向相同或相反。本发明生产效率高、加工精度好，能够延长模具的使用寿命，降低生产成本，适合大批量、自动化生产安全气囊气体发生器壳体的生产。