Manufacturing method of elevator gear blank

A manufacturing method and a technology of gears, which are applied in the field of manufacturing elevator gear blanks, can solve the problems of low production efficiency, difficulty in guaranteeing internal quality, and poor appearance quality of casting methods, and achieve easy quality control, reduced energy consumption, and small cutting allowances Effect

Inactive Publication Date: 2014-04-02
SHAOYANG XIANGBAO AUTO PARTS
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The production efficiency of the casting method is low, the appearance quality is poor, the internal quality is difficult to guarantee, and the production cost is too high

Method used

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  • Manufacturing method of elevator gear blank

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Embodiment Construction

[0009] The outer ring 1 and strap 2 of the elevator gear are processed separately. The processing method of outer ring 1 is: round steel blanking → forging → reaming → reverse welding groove; the processing method of strap 2 is: round steel blanking → die forging forming →Inverted welding groove; then weld the outer ring and the strap into one body, and then normalize.

[0010] Outer ring 1 and strap 2 use 20#~35# steel with good welding performance. According to the weight of the finished product, calculate the blanking size of round steel and accurately blank the material. The outer ring 1 and both sides of the gear have only 2~3mm machining allowance. The forging margin is too large.

[0011] The secondary forging is used to refine the crystal grains and the die forging is used to make the inner hole and the tap 2 of the gear do not need gold processing to meet the requirements of the design drawing. During the processing of the outer ring 1 metal, light clamping is required to...

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Abstract

The invention discloses a manufacturing method of elevator gear blank. An outer ring and lugs of a gear can be respectively processed, a processing method of the outer ring comprises the steps of round steel blanking, forging, chambering and groove face-down welding, a processing method of the lugs comprises the steps of round steel blanking, die forging forming and groove face-down welding, the outer ring and the lugs can be welded into a whole, and then normalizing can be carried out. The outer ring and the lugs select No.20-No.35 steels with good welding performance, and the design drawing requirement can be achieved by an inner hole of the outer ring and the lugs by utilizing die forging without metalworking; non-deformation welding is ensured by adopting a tool clamp; the welding stress is removed by adopting a normalizing technology, and the design rigidity is achieved. The gear which is manufactured by adopting the manufacturing method has the characteristics that the forming is simple and convenient, the material rigidity is increased, the energy and the consumption are reduced, the labor intensity of a worker is reduced, the production efficiency is increased, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to a manufacturing method of a gear blank, in particular to a manufacturing method of an elevator gear blank. Background technique [0002] The elevator gear is an important part that makes the elevator move. In order to better transmit torque and meet the requirements of installation, it is necessary to design gears with more complex shapes. The more complicated elevator gear commonly used processing method is casting. As we all know, the casting method consumes high energy and is not environmentally friendly, and the structure of the casting is unstable, the appearance is rough, time-consuming and labor-intensive, and the production cost is high. The current market price of ductile iron: the price of ductile iron QT600-3 is 12,000 to 15,000 yuan / T. like figure 1 The manufacturing process of gears with this structure is: mold making → molding → casting → tempering → sand cleaning → outer circle turning → lower end face → upp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 李斌彭盛健孙准成汤永
Owner SHAOYANG XIANGBAO AUTO PARTS
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