对平面公差要求越来越高。此外，新材料正在开发中，这往往会给更传统的加工工艺带来问题。本文描述了以受控生产方式对平面进行精密研磨加工的过程。该工艺适用于几乎任何稳定的材料，如黑色金属和有色金属、陶瓷、塑料、晶体、合金和各种烧结制品。涵盖了三种不同的过程。第一种是松散研磨加工，也称为研磨。第二种是粘结磨料加工，也称为平面珩磨和精磨。第三个过程是使用松散的或嵌入的磨料进行精密抛光，以产生极其平坦的反射表面。

THE REQUIREMENT FOR CLOSER TOLERANCES OF FLAT SURFACES IS BECOMING MORE IN DEMAND. IN ADDITION, NEW MATERIALS ARE BEING DEVELOPED WHICH OFTEN PRESENT PROBLEMS FOR MORE TRADITIONAL MACHINING PROCESSES. THIS PAPER DESCRIBES THE PROCESS OF PRECISION ABRASIVE MACHINING FLAT SURFACES IN A CONTROLLED PRODUCTION MANNER. THE PROCESS IS APPLICABLE TO ALMOST ANY STABLE MATERIAL SUCH AS FERROUS AND NONFERROUS METALS, CERAMICS, PLASTICS, CRYSTALS, ALLOYS, AND VARIOUS SINTERED PRODUCTS. THREE DIFFERENT PROCESSES ARE COVERED. THE FIRST IS LOOSE ABRASIVE MACHINING, ALSO KNOWN AS LAPPING. THE SECOND IS BONDED ABRASIVE MACHINING, ALSO KNOWN AS FLAT HONING AND FINE GRINDING. THE THIRD PROCESS IS PRECISION POLISHING USING LOOSELY HELD OR IMBEDDED ABRASIVE TO PRODUCE EXTREMELY FLAT REFLECTIVE SURFACES.