Forging method of roller way planet gear

A planetary wheel and roller table technology, which is applied to wheels, metal processing equipment, transportation and packaging, etc., can solve the problems of high product quality risk, shrinkage, flanging and burrs, etc., and achieve the effect of ensuring purity and homogeneity

Inactive Publication Date: 2021-09-21
德力佳传动科技(江苏)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, a small number of manufacturers adopt the method of single-sided punching with hollow punches. This method will cause serious shrinkage, which will cause the problem of shrinkage on one side of the forging and expansion on the other side accompanied by a large number of flanging burrs, which greatly reduces Overall forging efficiency, high product quality risk

Method used

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  • Forging method of roller way planet gear
  • Forging method of roller way planet gear
  • Forging method of roller way planet gear

Examples

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Effect test

Embodiment Construction

[0020] Among the present invention, the forging is made of 18CrNiMo7-6 carburizing steel, the diameter of the inner hole of the hollow round table punch is 250mm, and the diameter of the end face of the hollow cylindrical punch and the solid round table punch are designed in cooperation, and the forging is carried out in the following steps:

[0021] S1: In this embodiment, the forging temperature is controlled at 850°C-1200°C, the forging is placed on a flat anvil, and an 8T electro-hydraulic hammer is used to perform upsetting and elongating operations on the forging. The forging ratio is 7.01. The forging is drawn to 793mm, then upset to 500mm, repeat the operation 3 times, and finally the forging is upset to 460mm;

[0022] S2: place the forging upsetting to 460mm on the flat anvil, such as figure 1 As shown, place a hollow round table punch in the center of the upper end face of the forging, and the hollow round table punch table is facing the center of the upper end face...

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Abstract

The invention discloses a forging method of a roller way planet gear. A double-sided matched punching forging method of punching by a hollow punch at the front side and blanking by a solid punch at the back side is adopted, the defects of segregation, looseness, cracks and holes in a central area of a raw material can be effectively removed, and the purity and homogeneity of the inner wall material of the roller way planet gear is ensured; and meanwhile, the problem that the product quality is influenced by flanging and burr phenomena caused by a single-sided punching forging process method is solved.

Description

technical field [0001] The invention relates to a manufacturing process of a wind power gearbox, in particular to a forging method of a roller table planetary wheel. Background technique [0002] The planetary wheel forging is an important part of the wind power gearbox, which has the characteristics of complex force, concentrated load and long service time. Generally, the inner bore of the planetary gear has an independent outer ring as a roller roller table, but in recent years, more and more planetary gears in wind power gearboxes adopt a roller table structure, that is, the inner wall of the planetary wheel is directly used as the outer surface of the bearing. lock up. The inner wall of the planetary wheel of this structure is directly used as the roller table of the roller bearing. The quality of the inner wall is directly related to the quality and service life of the entire gearbox. How to ensure the quality of the inner wall of the planetary wheel of the roller tabl...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): B21K1/28B21J5/10
CPCB21K1/28B21J5/10
Inventor刘建国李奎张加会郑林林牛余刚董云龙赵兴明赵丽美尚贺军
Owner德力佳传动科技(江苏)股份有限公司