METHOD OF FORMING HUB COMPONENT FOR TRANSMITTING POWER OF TRANSMISSION

摘要

The present invention relates to a method for forming a hub component for transmitting power used in a transmission comprising: a first step of forming a first middle molded object (100-1) by bending a metal plate (100) by relatively moving a first upper press mold (10) and a first lower press mold (20); a second step of forming a second middle molded object (100-2) including a first concave part (200) to be processed as the circumference of a hub component by inverting the first middle molded object (100-1), and relatively moving a second upper press mold (10-1) and a second lower press mold (20-1); a third step of inverting the second middle molded object (100-2), and arranging a third lower press mold including a lower base mold (20-4) arranged in the lower side of the concave part (200) of the second middle molded object (100-2), and lower lateral molds (20-2, 20-3) respectively arranged in the both sides of the concave part (200), and a third upper press mold (10-2) in the upper side of the concave part (200); a fourth step of forming a second concave part (200-3) fitting the width of the circumference of the hub component from the first concave part (200) by relatively moving the third upper press mold (10-2) and the third lower press mold; and a fifth step of forming a final shape of the circumference by relatively moving a fourth upper press mold and a fourth lower press mold according to a shape of the circumference of the hub component to be formed.