Jig for heat treating wiper frame of wiper blade and method for machining wiper frame using the same

An aspect of the present invention relates to a jig (200) for heat treating a wiper frame of a wiper blade, comprising a first jig (212) provided with a first working surface (213) having a predetermined curvature to press an upper portion of a wiper frame workpiece; a second jig (216) arranged opposite to the first jig and provided with a second working surface (217) having a curvature corresponding to the first working surface to press a lower portion of the wiper frame workpiece; and a press for pressing the first and second jigs to form the wiper frame workpiece (220) disposed between the first and second jigs.