Maching process and mold for annulus of external gear reduced one-way device

A technology of external ring gear and one-way device, which is applied in the direction of manufacturing tools, metal extrusion dies, and other manufacturing equipment/tools, can solve the problems of complex molds, high production costs, and low work efficiency, so as to improve production efficiency and production efficiency. The effect of low cost and high work efficiency

Inactive Publication Date: 2006-05-17
陈萌
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  • Abstract
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Problems solved by technology

However, when manufacturing the outer ring gear, due to the complex internal and external structure of the outer ring gear of the external gear reduction type one-way device, it is difficult to stamp the outer ring gear at one time, so this method cannot be implemented
[0003] Chinese patent 92112696 discloses a cold drawing method for toothed gear blanks, which gradually deforms the blank through the gradual deformation of the mold

Method used

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  • Maching process and mold for annulus of external gear reduced one-way device
  • Maching process and mold for annulus of external gear reduced one-way device
  • Maching process and mold for annulus of external gear reduced one-way device

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[0015] 1. First, process the raw materials to be processed into rough bad materials according to the shape requirements of the target parts. According to the process requirements of cold die extrusion, the raw materials to be processed are annealed and softened to make the hardness within the range of HB110-150, and then proceed. Descaling, pickling, cleaning, and saponification in the saponification solution, and then extruded by cold die on a press to extrude the outer ring gear of the unidirectional gear with the star wheel blank and the star wheel inner tooth 9 The rough blank is then placed into the secondary forming mold, and the outer gear 8 of the outer ring gear is formed by the second extrusion by the press. After processing and heat treatment, the production of the unidirectional gear outer ring is completed.

[0016] In order to achieve the above process, the present invention also provides a combined mold. This set of molds is composed of a male mold 1, an extruder to...

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Abstract

The present invention discloses machining process and special mold for annulus of external gear reduced one-way device. The making process includes cold extruding the blank inside a cold mold in a pressing machine, re-extruding inside the secondary mold to form outer surface gear, further machining and heat treatment to complete the machining. The mold includes male mold, outer teeth extruding mold, female mold block, mandrel and mandrel guiding sleeve. The making process has effectively controlled product machining precision, high efficiency and low cost.

Description

technical field [0001] The invention relates to a manufacturing method of an external gear reduction type one-way gear outer ring gear used in an automobile starter, and a special mold required for realizing the method. Background technique [0002] The outer ring gear is an important part of the external gear reduction type one-way device. The driving torque of the starter motor is transmitted to the meshing shaft of the starter through the outer ring gear to realize the starting function of the starter. Utilizing cold press processing to manufacture toothed gear blanks is a commonly used method for manufacturing external ring gears. For example, Japanese patent document Sho 62-112829 separates a process and mold for manufacturing toothed gear blanks by stamping. This This method can complete the production of the gear blank in one process. But when producing the outer ring gear, because the outer ring gear of the external gear reduction type one-way device has a relativel...

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Application Information

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IPC IPC(8): B23P23/04B21C23/14B21C25/02
Inventor 陈萌
Owner 陈萌
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