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组合机床及其自动线162,~0Z柴油机连杆螺栓孔加工 中央立柱式组合机床……………………………2一l带抬起步进式输送带的自动线。……………………2—13提高火车车轮孔加工效率的专用机床。……………2一16可调组合机床和自动线。……………………………3—19缝纫机下轴自动线简
Combination of machine tools and automatic lines 162, ~ 0Z Diesel engine connecting rod bolt hole machining center column type combined machine ................................. 2 l l with a lift-step automatic conveyor belt. ........................ 2-13 Special machine tool for improving the machining efficiency of train wheel holes. ............... 2 a 16 adjustable combination of machine tools and automatic lines. ................................. 3-19 Automatic thread cutting in the lower shaft of the sewing machine