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Idler machining method and combined mold for machining

A processing method and technology of combining molds, which are applied in forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of low utilization rate of raw materials, low production efficiency, and less processing, so as to reduce the processing time of wire cutting and improve the mold production. The effect of life and material cost reduction

Pending Publication Date: 2017-12-15
山东大为齿轮传动有限公司
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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

Method used

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  • Idler machining method and combined mold for machining
  • Idler machining method and combined mold for machining
  • Idler machining method and combined mold for machining

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Embodiment Construction

[0029] The idler processing method of the present invention comprises the following steps:

[0030] S1: The raw material is cut into bars by CNC sawing machine, which is beneficial to control the weight of the bar, and the difference between the weight of the bar and the forming idler does not exceed 2%.

[0031] S2: Decarburization and oxidation on the surface of the bar will seriously affect the appearance of the tooth shape, resulting in unsatisfactory filling and shortening the life of the mold. Therefore, precision forming must prevent the generation of scale. Use an intermediate frequency atmosphere furnace to heat the bar to within 110°C ± 20°C. During the heating process, pass nitrogen to prevent the bar from being oxidized in the furnace, and then apply an anti-oxidation coating on the surface of the bar to achieve further oxidation-free heating. And preliminary heating is beneficial to the adsorption of the anti-oxidation coating.

[0032] S3: The material temperature...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21D37/10B21K1/30B23P15/00
CPCB21D37/10B21J13/02B21K1/30B23P15/00
Inventor 朱传宝王宝雨林建国张慧
Owner 山东大为齿轮传动有限公司
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