发动机气缸盖气门阀座跳动加工优化

Optimization of Machining Parameter for Valve Seat of Engine Cylinder Head

缸盖是内燃机的重要部件,它的加工精度直接影响到发动机的工作性能。发动机工作时,可燃气体是在缸盖燃烧室压缩后进行点燃,所以要求气门和阀座有很好的密封性,这就对气门阀杆和阀座的同心度和圆度提出了很高的精度要求。文章通过分析影响气门阀座跳动的因素的,排出了来料、刀具、设备的影响,优化了加工条件,最终提高了阀座跳动加工精度。

Cylinder head is an important part of internal-combustion engine,and its accuracy directly affects the performance of engine.When the engine is working,the flammable gas is ignited after the cylinder head combustor is compressed,so the valve and seat are required to be well sealed.This required high accuracy to the concentricity and roundness of the valve stem and seat.In this paper,we analysised the factors which affect the runout of valve seat,And discharged the factors of materials、tools and the machine,finally improved the accuracy by optimizing the machining parameters.