Patent ID: 6438815
Filing Date: 2002-08-27
Classification: B21D,B60S,Y10T

Abstract:
A method for making a windshield wiper arrangement for a vehicle which includes a mounting carrying a drive comprising a wiper motor, a gear unit and a lever arm and includes two bearing brackets spaced from the drive, each bracket supporting one wiper arm drive shaft having an oscillating lever and including a link rod connecting the lever arm and the oscillating lever, the method comprising cold forming the mounting including the bearing brackets and a drive mount in one piece from a tubular semi finished part by placing a tubular semi finished part having a predetermined length and a predetermined cross-section for the mounting in a multi-part form having a pressure surface with the shape of the mounting to be formed including pairs of opposed, substantially cylindrical recesses extending essentially radially to the longitudinal axis on opposite sides of the mounting in regions of the drive and the bearing brackets and thereafter applying high pressure to the interior of the semi finished part causing the tube walls to be pressed against the pressure surface on all sides and to be forced into pairs of opposed substantially cylindrical recesses to form a one-piece mounting having integral tubular bearing brackets for the wiper arm driveshafts.