| 摘要 |
PROBLEM TO BE SOLVED: To provide a work size fitting mechanism with a grinding wheel-like shape, which is arranged on the upper face of a ring-like surface plate to fit the inside peripheral part and the outside peripheral part to the size of a work. SOLUTION: The work size fitting mechanism is provided with a mounting part 31 which is connected to a base part 30 capable of vertical motion by a driving source and which can move between a position between a lower surface plate 1 and an upper surface plate 21 and a position which departs from there, and an inside cutting tool 32 and an outside cutting tool 33 which are movably positioned on both sides of the mounting part 31 to extend vertically. Further, both the cutting tools 32, 33 are provided with an upper cutting edge and lower cutting edge respectively extending above and below the mounting part 31. |
