| 摘要 |
为作成可最有效率地实现旋转砂轮的自生作用且锐利刃面能不断出现而衍生出应解决之课题。本发明为解决前述课题，乃提供一旋转砂轮之制造法，其系具有用以嵌合砂轮机的砂轮旋转驱动用轴之孔2且设有作为补强材之一片或复数片的玻璃布4的旋转砂轮1之制造法，其特征为：上述玻璃布4系由直径0.1mm以下的捻线构成，且用形成纵横的长度2.0mm以下的织网之平纹织法、斜纹织法或纱罗织法所编织成，于该玻璃布4装设液状树脂作成预浸材6后，于该预浸材6的两面装设树脂被膜磨粒，其次，将两面形成有树脂被膜磨粒层的预浸材6以压榨机压榨，然后再于金属模施以既定的压机加工之后，于焙烧炉中焙烧而制成。;A problem to be solved occurs for being capable of realizing a self-sharpening of a rotary grindstone in the most efficient manner and allowing sequential appearances of sharp cutting faces. ;[Solving Means] ;In order to solve the above problem, the present invention has provided a manufacturing method of a rotary grindstone 1 having a central hole 2 for fitting a shaft for grindstone rotation drive of a grinder and provided with one or a plurality of sheets of glass cloth 4 as a reinforcing material, characterized in that the glass cloth 4 is weaved by thirl plain weave/twill weave or leno weave composed of twist yarns having a diameter of 0.1 mm or less and formed in meshes with lengthwise and crosswise lengths of 2.0 mm or less, and the rotary grindstone is manufactured by, after attaching liquid resin to the glass cloth 4 to produce a prepreg 6, attaching resin-coat abrasive grains to both faces of the prepreg 6, and next after pressing the prepreg 6 formed with resin-coat abrasive grains layers on both faces of the prepreg in a press machine and further performing predetermined press working in a metal mold, performing baking in a baking furnace. |
