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我厂生产的电动多能缝纫机中的送布凸轮,属于盘形凸轮,试制时采用车削加工,其车用靠模凸轮原按下列方法设计:即基圆比工件凸轮加大多少毫米,其形状各尺寸也加大多少毫米。但在实际加工时,车削的送布凸轮形状产生了畸变,误差达1.5mm;严重影响了试制进程。后经现场观察,对产生畸变的原因从理论上进行分析、研究,找到了设计车用靠模凸轮的新方法——解析法,较快地解决了这个生产上的实际问题,收到了很好的技术、经济效果,现介绍如下: 一、盘形凸轮的车削原理在普通车床上车削盘形凸轮时,为了使车刀能随靠模凸轮升量的变化而灵活地移动,我们把车床横进刀丝杠卸掉,换上一根光杆,光杆上套装压缩弹簧,
I plant production of electric multi-function sewing machine in the feed cam, belonging to the disc-shaped cam, trial production using turning, the car with the cam by the original design of the following methods: the base circle than the workpiece cam to increase the number of millimeters, the shape Each size is also increased by how many millimeters. But in the actual processing, turning the cam shape of the feed generated distortion, the error of 1.5mm; seriously affected the trial production process. After on-site observation, the causes of distortion were theoretically analyzed and researched, and a new method for designing the cam for camcorder was found-analytic method, which solved the production problem fairly quickly and received very good The technical, economic results are as follows: First, the principle of turning the disc cam Turning discs in the ordinary lathe cam, in order to enable the lathe knife with cam cam changes in the amount of change and flexible movement, we turn lathe Into the feed screw removed, put on a polished rod, polished rod suit compression spring,