METHOD FOR FABRICATING PAD SPRING OF AUTOMOBILE DISK BRAKE BY PERFORMING NOTCHING, BENDING AND TRIMMING OPERATIONS ON STRIP AFTER SUPPLYING STAINLESS STRIP TO PRESS MACHINE IN WHICH SEQUENTIAL TRANSFER MOLD IS INSTALLED TO CERTAIN LENGTH

摘要

PURPOSE: To provide a method capable of fabricating a pad spring of automobile disk brake having high precision and greatly reducing fabrication cost in an automated production manner for mass-production. CONSTITUTION: A method for fabricating a pad spring of automobile disk brake comprises a first step of forming pilot holes(300) an edge portion of both sides of strip and forming a pad spring external shape in the unfolded state on a central portion of the strip by notching such that a surface of the strip on which groove of a pad guide part(102) is formed is not notched to continuously transfer the notched strip to the following step; a second step of bending an end of an elastic supporting part(101), guide protrusions(104) and catch protrusions(105) to a certain angle; a third step of bending the strip in a "( )" shape by bending left and right sides of the strip to an angle of 20 to 45 degrees in the state that a central portion of the strip on which groove is formed is left as it is as a first bending operation for forming the pad guide part; a fourth step of bending a part to be a caliper fixing part(103) on one portion of the bent part in a "∨" shape on a portion spaced from the pad guide part in a certain distance and bending a part to be the elastic supporting part on the other portion of the bent part in a crooked corner shape of the outer circumferential surface of a pad plate in both portions of the bent part in the "( )" shape; a fifth step of correcting the bent part by secondly bending the "∨" shape bent part perpendicularly, and correcting the elastic supporting part by secondly bending the elastic supporting part also to correct spring back phenomenon; a sixth step of secondly perpendicularly bending left and right portions of the pad guide part bent to an angle of 20 to 45 degrees in the third step; and a seventh step of separating the spring pad from the strip by trimming operation.