| 摘要 |
PURPOSE:To provide a double-side lapping device capable of lapping a pair of faces, different in surface roughness, of a workpiece in one machining process. CONSTITUTION:In a double-side lapping device, a grinding wheel 1b of fine grain size is disposed at an upper surface table 1, and a grinding wheel 2b of rough grain size is disposed at a lower surface table 2, so that a pair of opposed faces, different in surface roughness, of a workpiece S are machined accurately at the same time. The reason for disposing the grinding wheel 1b of fine grain size at the upper surface table 1 and the grinding wheel 2b of rough grain size at the lower surface table 2 is that grinding wheel chips of fine grain size exfoliated at the upper surface table and shavings have no influence on the rough surface side face of the workpiece S even if these chips and shavings flow out to reach the lower surface table 2. |
