REMANUFACTURING METHOD FOR DIFFERENFIAL CASE OF AUTOMATIC TRANSMISSION

摘要

PURPOSE: A method for recycling a differential case of an automatic transmission in a vehicle is provided to prevent the waste of a material by integrally connecting a boss unit for recycling while removing a part for discarding from the case through cutting. CONSTITUTION: A method for recycling a differential case of an automatic transmission in a vehicle comprises: a step of cutting a female stepped unit and a chamfering unit on an end edge unit after removing a boss unit for discarding from a main body of the differential case in which a connecting component is completely separated; a step of processing a male stepped unit on one side edge unit after cutting inner and outer diameter units of a cylindrical material and manufacturing a boss unit for recycling by molding a flat gear in the inner diameter unit; a step of inserting the male stepped unit of the boss unit for recycling into the female stepped unit of the main body and welding the outer surface circumference of a contacting part on a support plate rotating with the low speed by a motor; and a step of measuring out-of-roundness by mounting the main body on a shelf which the boss unit for recycling is integrated and finally processing the outer surface of a welding part while rotating with high speed. [Reference numerals] (AA) Process the chamfer part; (BB) Finely process the spur gear in a boss for recycling; (CC) Perform high-frequency heat treatment; (DD) Collect an automatic transmission of a discarded vehicle; (EE) Disassemble associated parts; (FF) Cut a boss for discarding from a differential case; (GG) Form a female stepped part and a chamfer part; (HH) Cut the inner and outer peripheries of a cylindrical material to form a male stepped part; (II) Form a spur gear on the inner periphery of the cylindrical material using a broaching machine; (JJ) Weld the boss for recycling to the female stepped part of the main body using a clamping jig; (KK) Finish the outer surface of the welded part