| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing an insert fitting having a draw-out resistant load equivalent to twill lined knurling and a twisting-resistant torque while eliminating the formation process of the knurling by an exclusive processing machine, and also to provide the insert fitting manufactured by the same. SOLUTION: The insert fitting is used by pushing a shaft part in a lower hole preliminarily formed at a resin plate or a metal plate to be mounted, or being preliminarily embedded in the material to be mounted. The processing of knurling on the outer circumference of the shaft part regulating turning around an axial center and falling off in an axial center direction and the processing of a swelling protrusion are carried out without using the exclusive processing machine. In an insert fitting manufacturing device equipped with a plurality of the molds, a casting process from cutting of a wire with a round section to an insert fitting formation before thread cutting are carried out consistently. COPYRIGHT: (C)2011,JPO&INPIT
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