To mainly inexpensively manufacture in a short time a high hardness curved arc face thin plate for supporting a ball bearing or a roller bearing, and furthermore, inexpensively manufacture in a short time a supporting member with high performance for a base isolation device.
A work piece 1C accordingly bent and adhered to a convex bent arc faced mold 8A or a concave bent arc faced mold is attached to a machine table and an upper face thereof is surface ground or machined into a random convex or concave shape such as a V shape, semi-circle shape, or a rectangle by machines such as a milling machine, planing machine, or a shaping machine. If the work piece 1C is not plastically deformed when adhering and fixing the work piece 1C to the curved mold, the work piece 1C detached from the curved mold springs back and a design concave curve arc face material is obtained after machining. This is a manufacturing method where the work piece 1C accordingly bent and adhered to the curved face is attached to the machine table and the surface is cut or ground in such manner. In such a case, the convex faced mold is precisely manufactured beforehand by a numerically controlled machine tool or the like so that when it is matched with the design concave bent arc face material, both curved faces adhere to each other.
SAKABA KOZO
IDEGAMI MASAHARU
MORITA MASANOBU
NOMURA TOMOE
NITTA HARUMOTO
TSUCHIYA YOSHITAKA
KATO KANAME
