目前,在加工口小底大的冲压产品时,大都采用胀形、旋压及收口这三种方式,其中胀形的生产效率较高,质量稳定,且破损率较低。一般胀形模的凹模拼块有用拖板以螺杆(见图1)及气动结构进行开合,也有用模座加套圈的方式,但这些方式都少不了手工操作,因而就无法进一步提高生产效率。我厂用胀形工艺生产14公分杯锅(见图2) At present, most of the stamping products with big bottoms are processed with three methods of bulging, spinning and closing, of which bulging is more efficient, stable in quality, and has a lower damage rate. General bulging die concave blocks useful drag plate with screw (see Figure 1) and pneumatic structure for opening and closing, but also with mold base plus the way the ring, but these are indispensable manual operation, and therefore can not further increase production effectiveness. I plant with bulging-shaped production 14 cm cup (see Figure 2)