曲轴激光淬火工艺

为实现在将曲轴水平放置绕主轴转动条件下,对单拐或多拐曲轴的主轴和曲柄轴进行激光淬火和激光熔覆,建立了激光作用于曲拐表面形成螺线时的光斑轨迹方程。根据802D数控四轴联动激光淬火通用机床的运动特性,采用圆弧插补方法,以四轴联动方式编程,设计了激光网纹淬火数控程序。在四轴联动激光加工通用机床上实现了曲轴水平放置绕主轴转动对曲柄轴面的网纹进行激光淬火和激光表面熔覆。由于主轴匀速转动,定位不需要配重铁,工作过程稳定,可以一次装夹,不再改变曲轴回转中心,即可完成单拐或多拐曲轴的主轴和曲柄轴的激光淬火和激光熔覆,使802D数控四轴联动激光加工通用机床的功能得到发挥。

Processing of Laser Quenching Crankshaft

It aims to realize the laser quenching and cladding for the principle axis and crank of single or more crank while the crankshaft is laid horizontally and rotating around the principal axis.The track of the laser spot is deduced when the laser acts on the surface of the crank and forms whorl line.According to the motion characteristic of 802D numerically-controlled machine tool in four axes linkage generally used for laser quenching,with the arc interpolation method,the numerically controlled programme for laser net veins quenching is made in the form of four axes linkage.With this,the net veins laser quenching and surface cladding for crankshaft are accomplished on the four axes linkage laser machine tool,when the crankshaft is laid horizontally and rotating around the principal axis.Because the principal axis is rotating at a constant speed,no balance iron is needed to locate the workpiece,the work process is steady,only one time of location is needed,and no more movement of the rotating axis is needed to accomplish laser quenching and cladding of the crankshaft with single or more cranks,which puts the ability of the above machine tool for laser quenching to good use.