| 摘要 |
PURPOSE:In shaping a grinding wheel having the grain made of a hard material such as cubic system boron nitride, to make correction grinding of said dressing wheel and to true said grinding wheel accurately for attaining a fixed cutting depth. CONSTITUTION:A cut is made 26 for correction grinding by making relatively forward feed of a dressing wheel 36 toward a grinding wheel 3, and relatively forward feed of a truing tool 22 is made to said grinding wheel 3. At this time, the contact of said trueing tool 22 with said grinding wheel 3 is detected on the basis of the difference of fluid pressure between the inlet and outlet sides of a fluid motor 38 for driving to rotate said dressing wheel 36, and a fixed depth cut is finally made to said trueing tool accordingly. Therefore, said dressing wheel 36 can be subjected to correction grinding and accurately trued by a trueing tool 22 for attaining a fine fixed cutting depth regardless of thermal deformation. |
