| 摘要 |
When processing a female screw in a hole of a metallic material having the hole for female screw processing, a method includes forming a screw groove by sequentially pressing a processing portion of a male screw-shaped tool against an inner periphery of the hole only by a motion of a revolution of the male screw-shaped tool on a certain horizontal plane without rotation by itself in the state of gripping or fixing the metallic material to transfer a shape of the processing portion. A processing machine body gripping or fixing the metallic material having the hole for female screw processing; an X-Y axis table capable of making controlled movement to make an arcuate swinging motion of the processing machine body by exhibiting a required pressing force; and the male screw-shaped tool to be fixed onto the X-Y axis table are provided, and the male screw-shaped tool fixed onto the X-Y axis table forms a screw groove by sequentially pressing the processing portion of the male screw-shaped tool against the inner periphery of the hole only by a motion of a revolution on a certain horizontal plane without rotation by itself to transfer a shape of the processing portion. |
