MANUFACTURING METHOD OF CONTROL ARM FOR VEHICLE

摘要

Disclosed in the present invention is a method for manufacturing a control arm for a vehicle. The method for manufacturing a control arm for a vehicle of the present invention comprises the following steps: blanking a plate material; forming a first hole by punching the plate material; forming a second hole by pressing a boundary of the first hole expanding the first hole; forming a third hole by punching a boundary of the second hole for expanding the second hole; and forming a bush indentation part by pressing the third hole to expand.