Idler machining method and combined mold for machining

Abstract

The invention discloses an idler machining method and a combined mold for machining. The machining method includes accurate discharging, coating of an oxidizing preventing coating, non-oxidation induction heating, upsetting, forging forming, punching, spheroidizing annealing, shot blasting, cleaning, coating of a metal lubricant and cold sizing. The combined mold for machining comprises a hot fine forging forming mold; the hot fine forging forming mold comprises an upper mold part and a split type lower mold part; the upper mold part comprises a tooth-shaped upper mold and an upper pressing plate; the split type lower mold part comprises a lower mold body, a tooth-shaped lower mold and a lower ejecting rod; the lower ejecting rod is located below the tooth-shaped lower mold; a lower ejecting rod cushion plate is arranged below the lower ejecting rod; the lower mold body surrounds the lower ejecting rod and the lower ejecting rod cushion plate; a platform is arranged on the upper portion of the lower mold body along the periphery, and a lower cushion plate is arranged between the tooth-shaped lower mold and the platform; and an annular lower pressing plate is further included, and the tooth-shaped lower mold and the lower mold body are centered by the lower pressing plate. The near-net forming principle is adopted for the machining method, tooth profiles are forged at a time, and it is achieved that subsequent machining is little and even no subsequent machining exists.

Description

technical field [0001] The invention belongs to the field of idler processing and manufacturing, and in particular relates to an idler processing method and a processing combined mold. Background technique [0002] At present, most of the production of domestic reverse gear idlers still relies on traditional mechanical cutting methods, which require more than ten processes from rough to finished products, with low efficiency, low utilization rate of raw materials, and high cost. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a processing method for an idler and a processing combined die, which adopts the principle of near-net shape, and can forge a tooth shape at one time, with little or no subsequent processing, so as to solve the low manufacturing efficiency of the traditional reverse gear idler , Raw material utilization rate is low, the problem of high cost. [0004] In order to solve the problems of the te...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a processing method for an idler and a combined mold for processing, which adopts the principle of near-net shape to forge the tooth shape at one time, and there is little or no subsequent processing, so as to solve the low manufacturing efficiency of the traditional reverse gear idler , low utilization rate of raw materials and high cost

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