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Process for machining gear main shaft of high-power wind turbine generator set

A wind turbine and spindle processing technology, applied in the field of shaft processing technology, can solve the problems of incomplete digestion and absorption, and achieve the effect of reducing weight, improving strength and precision, and achieving long life

Active Publication Date: 2014-04-16
DALIAN CLEAN ENERGY HEAVY IND
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  • Summary
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  • Application Information

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Problems solved by technology

At present, there is a lack of mature high-power offshore wind turbine equipment in China, which is basically based on imported technology and has not been fully digested and absorbed.

Method used

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  • Process for machining gear main shaft of high-power wind turbine generator set
  • Process for machining gear main shaft of high-power wind turbine generator set

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Embodiment Construction

[0030] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] refer to Figure 1 to Figure 2 , the present invention provides a high-power wind turbine gear spindle processing technology, comprising the following steps:

[0032] a. Billet making;

[0033] a1. Blank production, the blank is processed by forging or casting;

[0034] a2. Rough machining of the shaft blank, turning the shaft end face, shaft outer circle, step surface, tooth outer circle and tooth end face, reserve a machining allowance of 5mm to 10mm for the shaft end face, and reserve a machining allowance of 2mm to 6mm for the rest. The surface roughness is Ra6.3;

[0035] b. Semi-finishing;

[0036] b1, semi-finishing turning, turning shaft end face, shaft outer circle, tooth outer circle and step surface, machining relief groove at each step surface, reserve 2mm~5mm machining allowance for shaft end face, and reserve 0.3mm~ for shaft o...

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Abstract

The invention provides a process for machining a gear main shaft of a high-power wind turbine generator set and relates to the adjustment of the sequence of heat treating and machining in the technological process. The specific process includes the steps of carrying out rough machining and semi-finishing machining on a blank, machining a gear and gear teeth, machining a spline, coating anti-seepage agents, carrying out heat treatment, and finally carrying out external grinding and tooth grinding. Accordingly, a part is machined. Meanwhile, in the machining process, imported high-end devices and tools are used in critical procedures and are cooperated with a heat treatment micro-distortion control technology so that specialized complete process machining from the blank to the finished product can be achieved. Through the process for machining the gear main shaft of the high-power wind turbine generator set, a fine metallographic structure and an even carburized layer can be obtained through the heat treatment. Consequently, the strength and accuracy of the spline are improved, the weight of the gear main shaft is reduced, and the service life of the gear main shaft is prolonged.

Description

technical field [0001] The invention relates to a shaft processing technology, in particular to a high-power wind turbine gear main shaft processing technology. Background technique [0002] As the latest technology of global wind power, offshore wind power is the new technology most likely to reduce the cost of wind power generation in the future, and has become a hot spot that has attracted much attention around the world. For large-scale offshore wind power equipment, the lightweight and long life of wind turbines have become technical difficulties in research. At present, there is a lack of mature high-power offshore wind turbine equipment in China, which is basically based on imported technology and has not been fully digested and absorbed. [0003] The new processing technology of the gear spindle of the high-power wind turbine is the advanced core technology of the gear spindle processing, which can solve the current difficulties in the localization of the domestic h...

Claims

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Application Information

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IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 张树河王成伟李世泽王盛松齐永健杜康
Owner DALIAN CLEAN ENERGY HEAVY IND