美国 Lamb 公司设计制造了一条加工两种不同的六缸柴油机气缸盖的带有转塔主轴箱的自动线。两种工件尽管在外形尺寸及结构上作了重新设计,使两者尽可能统一起来,但加工孔径和孔的位置分布仍然不同,致使调整困难。因而两种工件在一条线上进行加工,采用了两工位转塔主轴箱。 American Lamb Company designed and manufactured an automatic line with turret headstock for machining two different six-cylinder diesel engine cylinder heads. Although the two types of workpieces have been redesigned in terms of overall dimensions and structure so as to unite the two as much as possible, the distribution of processing apertures and holes is still different, which makes the adjustment difficult. Therefore, two kinds of workpieces are processed in one line, using two station turret headstocks.