Combined gear ring manufacturing method of hybrid new energy vehicle transmission

Abstract

The invention discloses a combined gear ring manufacturing method of a hybrid new energy vehicle transmission. Discharge equipment is used for discharging; a scale on the surface of a blank is removed; the blank is heated to 950-1050 DEG C; the forging is performed on an electric spiral press after heating; the final forging is performed on the electric spiral press at a temperature of not lower than 900 DEG C; the hot trimming is performed; the mechanical drilling is performed; the isothermal annealing is performed; the shot blasting is performed to remove the scale; the sorting is performed to actuate the surface phosphorus saponification for a qualified product; and a gear sharp angle of a product combined gear is coldly extruded, meanwhile, six arc holes are punched, and the six arc holes are once molded by punching. The combined gear ring manufacturing method finishes the extrusion molding of the gear sharp angle of the combined gear and precise punching of six arc holes in one procedure, can guarantee the gear shape precision of the combined gear and the position precision of six arc holes, greatly improves the gear shape precision and the size precision, is high in production efficiency, improves the material utilization rate highly, reduces the process difficulty of the transmission combined gear ring, and reduces the machining cost.

Description

technical field The invention relates to a method for manufacturing a transmission combined with a ring gear for a hybrid new energy vehicle, in particular to a method for manufacturing a transmission combined with a ring gear using composite fine forging and fine punching of teeth. Background technique When the automatic transmission of a hybrid electric vehicle is working, it needs to transmit the power of the vehicle to the driving wheels, and at the same time complete the distribution and coupling of the power of the engine and the motor. The hybrid transmission is a special automatic shift structure, which is different from the AT, DCT, CVT and other structures of traditional cars. Among them, the two-speed automatic transmission mechanism has been maturely applied to the hybrid electric vehicle of SAIC Motor, and has become the leading model of new energy vehicles in China. In the hybrid transmission, the key first and second gears are combined with the ring gear to p...

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Problems solved by technology

The utilization rate of materials is low, the processing efficiency is

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