| 摘要 |
PURPOSE:To manufacture metallic fixtures for stay with very high productivity through conventional punch molding, by adopting flat shape for the stay metallic fixture used for antenna mast so that it is suited to punch forming and providing external circumfernece, a plurality of stay fitting holes and mast insertion hole in parallel. CONSTITUTION:A mast insertion hole 11, a plurality of stay fixed holes 12, and external circumference are punched at the same time from a flat plate. The projection 16 having external diameter corresponding to the inner diameter of the hold 12, taper 17 for round forming formed at the root of the projection 16 so that it opposes to the surrounding corner, and press mold 15 are pressed to the hole 12 from the front and rear sides. Round is given to the ridge at front and rear of the hole 12 with the taper 17 to form stay fixing metallic fixture. |
