Method for machining arc and end surface of turbine guide blade of small gas turbine

A technology of turbine guide vane and processing method, which is applied in the field of grinding and processing, can solve the problems of processing deformation, technical blockade, high processing difficulty, etc., and achieves the effect of improving measuring tools and fixtures

Active Publication Date: 2019-11-26
成都和鸿科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the guide vanes of small-sized hollow turbines for small gas turbines are only mastered by a small number of foreign companies, and they have imposed a technical blockade on our country. However, in recent years, domestic work has been carried out on the development of small-sized turbine guide vanes for small gas However, it is still at the level of laboratory research and development, and there are still a large number of engineering application technology problems to be solved, such as core key technologies such as precision grinding and integrated processing of inner and outer circles and end faces.
[0003] Due to the extremely small radius of the arc, there are problems such as overcutting and interference of the grinding wheel in the process of machining the arc, and the minimum wall thickness is less than 1 mm, which may cause deformation and burn problems. In addition, there are small tolerances in the arc size, which makes processing difficult and the size is not easy to guarantee. , low processing efficiency and other issues

Method used

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  • Method for machining arc and end surface of turbine guide blade of small gas turbine
  • Method for machining arc and end surface of turbine guide blade of small gas turbine
  • Method for machining arc and end surface of turbine guide blade of small gas turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for processing a circular arc and an end surface of a guide vane of a small gas turbine turbine, comprising the following steps:

[0032] S01: Install the turbine guide vane, the grinding wheel 2 and the roller 1 attached to the surface for grinding the particles of the grinding wheel 2 on the five-axis machining center;

[0033] S02: Contact the grinding wheel 2 with the roller 1 to ensure that the grinding surface of the grinding wheel 2 is in full contact with the dressing surface of the roller 1;

[0034] S03: Make the grinding wheel 2 and the roller 1 move together and make the surface of the grinding wheel 2 contact the grinding surface of the turbine guide vane, and turn the grinding wheel 2 to grind the grinding surface of the workpiece. Since the grinding wheel 2 and the roller 1 are always in contact, the roller 1 is While the grinding wheel 2 is grinding, the roller 1 is trimmed;

[0035] S04: After finishing the grinding surface of a single turbine...

Embodiment 2

[0039] The difference between this embodiment and embodiment 1 is that in order to reduce the quantity of roller 1 and emery wheel 2, reduce the replacement frequency of processing tool, improve processing speed and further design to emery wheel 2 machine roller 1.

[0040] A method for processing a circular arc and an end surface of a guide vane of a small gas turbine turbine, comprising the following steps:

[0041] S01: Install the turbine guide vane, the grinding wheel 2 and the roller 1 attached to the surface for grinding the particles of the grinding wheel 2 on the five-axis machining center;

[0042] S02: Contact the grinding wheel 2 with the roller 1 to ensure that the grinding surface of the grinding wheel 2 is in full contact with the dressing surface of the roller 1;

[0043] S03: Make the grinding wheel 2 and the roller 1 move together to make the surface of the grinding wheel 2 contact the grinding surface of the turbine guide vane, and turn the grinding wheel 2 ...

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Abstract

The invention relates to the field of grinding machining, in particular to a method for machining an arc and an end surface of a turbine guide blade of a small gas turbine. According to the method, agrinding wheel in grinding is finished by adopting a mode that a rolling wheel and the grinding wheel are matched, so that the precise grinding machining problems of an inner circle, an outer circle and the end surface of the turbine guide blade of the small gas turbine are solved, the integrated machining of the arc and the end surface of the turbine guide blade of the small gas turbine is realized, a measuring tool and a clamp for arc machining are improved, the machining efficiency of the inner circle, the outer circle and the end surface is improved, and a reasonable method and reasonableexperience are provided for precise grinding integrated machining of the inner circle, the outer circle and the end surface of other similar blades in the future.

Description

technical field [0001] The invention relates to the field of grinding processing, in particular to a method for processing the arc and end face of a guide vane of a small gas turbine. Background technique [0002] Turbine guide vanes for small gas turbines have the characteristics of small size, complex structure (complex hollow), long service life, and multi-fuel applicability. Performance stability, oxidation resistance and thermal corrosion resistance. At present, the guide vanes of small-sized hollow turbines for small gas turbines are only mastered by a small number of foreign companies, and they have imposed a technical blockade on our country. However, in recent years, domestic work has been carried out on the development of small-sized turbine guide vanes for small gas However, it is still at the level of laboratory research and development, and there are still a large number of engineering application technology problems to be solved, such as core key technologies ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B1/00B24B19/14
CPCB24B1/00B24B19/14
Inventor 张爱民杨超朱志刚余彦
Owner 成都和鸿科技股份有限公司
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