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在西德汽车工业的一个主导厂内,连杆及盖是在一台六工位回转工作台式组合机床和两条自动线上加工的。连杆及盖的毛坯为钢模锻件,其抗拉强度为90公斤/毫米~2。侧面经过予先拉削的连杆送到组合机床上,其工作示意图示于图1。机床生产率在75％负荷率下为每小时215件。第一工位上由工人装卸四个连杆。在第二位上,小头孔钻一半深度;在第三工位上把孔钻透。第四工位上扩孔。第五工位上,四轴钻削头借助
In a leading factory in the West German automotive industry, the connecting rod and cover are machined on a six-station rotary table-top combination machine and two automatic lines. The connecting rods and cover blank are steel forgings with a tensile strength of 90 kg / mm ~ 2. After the side of the first broached rod sent to the combination of machine tools, the schematic diagram shown in Figure 1. Machine productivity at 75% load rate of 215 pieces per hour. The first station by the workers handling four connecting rod. In the second place, the small hole was drilled to a depth of one half; the hole was drilled in the third station. The fourth station reaming. Fifth station, with four-axis drilling head