三、中高度磨床中高度磨床(Crowning or chamberingroll erinding machine)是重型的轧辊及榨压辊磨床。在使用中,这些轧辊压辊的线压很高,面幅又阔,还要求整个面幅有不变的线压;因此为了补偿撓度,它们某些表面的中部须稍微凸出,形成鼓状。这表面的曲线大致上是撓度线。这种鼓状在造纸工业中称为中高度。我们现在所要造的磨床,除了加工圆柱工件外,还要有特殊的装置,可以加工有中高度的工件。工件表面的 Third, the middle height grinder (Crowning or chamberingrolleringingmachine) is a heavy-duty roller and squeeze roller grinding machine. In use, these roll press rolls have a high line pressure and a wide surface area and require a constant line pressure across the entire area; therefore, in order to compensate for the deflection, the center of some of their surfaces must project slightly to form a drum. . This surface curve is roughly a deflection line. This type of drum is called medium height in the paper industry. The grinding machines we are now building, in addition to machining cylindrical workpieces, must have special devices that can process workpieces of medium height. Surface of the workpiece