一拖标准件厂应用价值工程对气门挺杆进行加工工艺改进,既改进了该产品的功能又提高了价值,取得了很好的效果。气门挺杆传统的加工方法是采用锻件毛坯,后序机加工余量大,材料浪费严重,并且其端面的球窝要经过钻、锪、铰、精铰几个加工步加工才能完成,尺寸精度低,表面粗糙度只能 One tow Standard Factory Applied Value Engineering improved the process of valve lifter, which not only improved the function of the product but also increased the value and achieved good results. The traditional processing method of the valve lifter is to use forging blanks. The machining allowance of the subsequent machine is large and the material waste is serious. The ball socket of the end face can be completed through several processing steps of drilling, boring, hinge and precision hinge. The dimensional accuracy can be achieved. Low, surface roughness can only