异型配重铁曲轴连杆颈车削夹具的设计与应用

Design and Application of Crankpin Turning Fixture of Special Balancing Crankshaft

S - 2 17曲轴连杆颈车床是车削曲轴连杆颈主要设备之一。对称型配重铁曲轴连杆颈的加工 ,其圆周方向的定位一般是铣削末端配重铁边缘形成一平面加以定位。对于非对称型配重铁曲轴连杆颈的加工 ,则无法采用这种方法。文章采取了一种全新的、完全脱离依赖末端配重铁办法 ,首先在末端弧顶处铣一平面加以定位加工曲轴第 1、6连杆颈 (6拐曲轴 ) ,然后再以第 6连杆颈外圆定位加工第2、5和 3、4连杆颈。经生产实践证明 ,该方法定位精度高 ,加工过程稳定 ,具有很好的应用推广前景。

The S1-217 crankpin lathe of crankshaft is one of the important equipment. The crankpin machining of symmetric balancing crankshaft, its locating is the plane in the balancing. The crankpin machining of no symmetric balacing crankshaft will not use this method. This paper used a kind of new method, in the first place, it used the plane of crankpin top milled in machining the first and sixth crankpins of crankshaft, then, it used the sixth crankpin locating at excircle to machine the second and fifth or third and fourth crankpins of crankshaft. It was proved through production practice, this method is exact of accurate locating and stable machining, it has the bright application prospect.