| 摘要 |
PURPOSE:To enable high-precision lapping without generating sags on the edge section by depositing a film on the projection end surface of a work then lap- machining the surface not deposited with the film by the lapping coupled with the projection. CONSTITUTION:When performing finish-machining of a pair of a male mold 3 and a female mold 4, the tip surface of a projection 3b of the male mold 3 is coated with thermosetting resin such as urea resin or epoxy resin, it is heated and heat-cured to form a film 3c, and likewise a film 4c is formed on the end surface of the recess 4b side of the female mold 4. Next, the male mold 3 coated with the film 3c is coupled with the female mold 4, and a lap agent such as diamond with a grain size of about #3000 is inserted between these molds to perform slide lapping. What is actually abraded is the films 3c, 4c, and the profile of the male mold 3 and female mold 4 is not collapsed, thereby lap-machining can be performed on the surface other than the films 3c, 4c while maintaining high profile precision. |
