JIG FOR TESTING ASSEMBLY OF HUB AND BRAKE DRUM

摘要

PURPOSE: A jig for testing an assembly of a hub and a brake drum is provided to test processing state by observing coupling state with a jig for testing. CONSTITUTION: A long shaft(11) is inserted to a central hole(6) of an assembly of a hub and a brake drum. An internal flange(13) and a protrusion(14) contacting to the inner face of a drum are formed by centering on the shaft. A stud bolt hole(15) for inserting a stud bolt by penetrating through the contacting protrusion is combined with the outer portion of the hub and brake drum assembly. A jig for testing is combined with the outer portion of a stud bolt(7) of the hub and brake drum assembly. Herein, the fineness or the defect of processing is decided after the combination of a hub shaft according to the degree of rectangular or complete circle of the stud bolt. If there is a defect, the jig is not combined or a gap is created between the stud bolt seat surfaces.