| 摘要 |
The forming mold has a base member 10, and a resin layer 20 formed on the base member 10. The base member 10 has a rigidity higher than that of the resin layer 20. On the surface of the base member 10, the resin layer 20 having a thickness (Tb) of 1 mm or more is formed through lining or a similar technique. Then, the surface of the portion of the resin layer 20, the portion to be serve as a forming surface, is machined (e.g., end-milled) for finishing so that the thickness of the portion is reduced from Tb to Ta, whereby a forming surface P1 is completed. The forming surface P1 has a form accuracy as high as that attained by a forming surface of a forming mold produced through machining without employing a resin layer. In addition, since the base member on which the resin layer is formed has high rigidity, as compared with a forming mold formed of only a resin layer, deformation of the resin layer is prevented, whereby the form accuracy of the forming surface made of the resin layer is further enhanced. A method for producing a forming mold which has a resin layer serving as a forming surface, the resin layer having high form accuracy can be provided. |
