Steam turbine square steel blade fixture

A technology of steam turbines and square steel, applied in the direction of clamping, manufacturing tools, metal processing machinery parts, etc., can solve the problems of unguaranteed machining accuracy, poor coincidence of the center of rotation, and increased operation steps, etc., to improve production efficiency, The effect of improving precision and reducing processes

Inactive Publication Date: 2009-10-28
NANTONG ZHONGNENG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Usually, when performing high-precision machining of steam turbine blades, it is necessary to determine the center of rotation of the blades on a milling machine. Generally, three thimbles with two thimbles at the root end and one thimble at the crown are used to fix the blade to process it. Using this type of thimble needs to be done in the unformed The thimble hole is processed on the end surface of the blade crown and blade root, and the thimble hole is milled and removed after the processing is completed. This method is used to clamp the blade, and the coincidence degree between the blade and the rotation center of the machine tool is poor, and the machining accuracy cannot be guaranteed. At the same time, it increases operating steps, reducing production efficiency

Method used

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  • Steam turbine square steel blade fixture

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Embodiment Construction

[0012] As shown in the figure, a steam turbine square steel blade clamp of the present invention is composed of a blade crown thimble sleeve 1 and a blade root clamp 2 . Wherein, the leaf crown thimble cover 1 is composed of a frame-shaped connecting plate A5 and a leaf crown positioning plate 6 fixed on the end face of the frame-shaped connecting plate A5, and the inner cavity formed by the frame-shaped connecting plate A5 and the leaf crown positioning plate 6 is the leaf crown imitation of the blade. shaped structure; the blade root fixture 2 is composed of a frame-shaped connecting plate B7 and a blade root positioning plate 8 fixed on the end surface of the frame-shaped connecting plate B7, and the inner cavity formed by the frame-shaped connecting plate B7 and the blade root positioning plate 8 is the blade of the blade. Root profiling structure.

[0013] In order to ensure a high degree of coincidence between the center of rotation of the blade and the center of rotatio...

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PUM

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Abstract

The invention provides a steam turbine square steel blade fixture which fixes conveniently and saves materials in processing and is jointed on a driving fixture and a followed thimble on a milling machine by a blade shroud tailstock barrel and a blade root fixture. The rotation center of the blade shroud tailstock barrel and the blade root fixture coincides with the rotation center of the blade. The inner cavities of the blade shroud tailstock barrel and a blade root fixture are the modeling structures of the blade shroud and blade root of the blade. Through fixing the blade by the blade shroud tailstock barrel and the blade root fixture whose centers coincide with the rotation center of the blade, the rotation center of the blade and the milling machine are coincided highly and the processing precision is improved. The fixture does not need drilling the centre holes at two sides of the blade, thus decreasing the procedures and improving the production efficiency.

Description

technical field [0001] The invention relates to a clamp, in particular to a steam turbine square steel blade clamp which is convenient for clamping and saves materials during processing. Background technique [0002] Usually, when performing high-precision machining of steam turbine blades, it is necessary to first determine the center of rotation of the blades on a milling machine. Generally, three thimbles with two thimbles at the root end and one thimble at the crown are used to fix the blade to process it. Using this type of thimble needs to be done in the unformed The thimble hole is processed on the end surface of the blade crown and blade root, and the thimble hole is milled and removed after the processing is completed. This method is used to clamp the blade, and the coincidence degree between the blade and the rotation center of the machine tool is poor, and the machining accuracy cannot be guaranteed. At the same time, it increases The operation steps are shortened...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06
Inventor 张望梧
Owner NANTONG ZHONGNENG MACHINERY
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