HIGHLY ACCURATE PROCESSING METHOD FOR MATERIAL DIFFICULT TO BE CUT

摘要

PURPOSE:To eliminate the need for a complicated correction polishing and to easily perform the highly accurate processing of the material difficult to be cut, by forming a layer having an equal polishing efficiency and a free-cutting property on the prework face of the material difficult to be cut and removing the layer by an equal polishing, after its working in a highly accurate face by cutting. CONSTITUTION:On the prework face of the material 1 difficult to be cut the layer 3 of a easily cut material having the polishing efficiency equal thereto is formed. The layer 3 of the easily cut material is then removed just as maintaining the shape thereof by the equal polishing with a diamond abrasive grains 5, after working this layer 3 by cutting with a diamond bite 4 in a highly accurate shape. Consequently, a highly accurate shape can be obtained without the need for a correction polishing.