论文部分内容阅读
价值工程在改进汽车后桥制动鼓内孔车削工艺中的应用。 第二汽车制造厂的EQ140汽车后桥制动鼓内孔制动摩擦面的精车,是一个关键工序。由精车制动鼓内孔八轴立车进行加工。设备原设计要求是年生产5万5千辆件。单件机床切削时间为3.46分钟。随着形势的发展,此设备已经不能适应生产的要求,需要增添一台八轴立车,需投资40万元。应用价值工程原理对该设备的传动系统进行分析,发现可改变该传动系统中的一对可换介轮,我们将这对齿轮调换位置,即主动轮变为被动轮,被动轮变为主动轮。这样主轴转速可由原来的120r/mm提高到
Application of Value Engineering in Improvement of Inner Hole Turning Technology for Brake Drum of Automobile Rear Bridge . The second car manufacturer’s EQ140 car rear axle brake drum brake friction surface friction wheel is a key process. It is processed by the eight-axis vertical lathe in the borehole of the fine brake drum. The original design requirement of the equipment was to produce 55,000 pieces per year. The single-machine cutting time was 3.46 minutes. With the development of the situation, this equipment has been unable to meet the requirements of production. It is necessary to add an eight-axis vertical lathe that requires an investment of 400,000 yuan. The application value engineering principle analyzes the transmission system of the equipment and finds that a pair of interchangeable wheels in the transmission system can be changed. We change the position of the pair of gears, that is, the driving wheel becomes a passive wheel, and the driven wheel becomes a driving wheel. . In this way, the spindle speed can be increased from the original 120r/mm to