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Special fixture used for processing open slot on spatial dihedral angle slope of turbine blade

A technology of steam turbine blades and special fixtures, which is applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve the problems of high manufacturing cost, large equipment investment, high operating cost, etc., and achieve superior surface finish and processing accuracy High, operational effect

Active Publication Date: 2012-03-14
四川省自贡市海川实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of five-coordinate machine tools requires large equipment investment and high operating costs, making the manufacturing cost of such blades high.

Method used

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  • Special fixture used for processing open slot on spatial dihedral angle slope of turbine blade
  • Special fixture used for processing open slot on spatial dihedral angle slope of turbine blade
  • Special fixture used for processing open slot on spatial dihedral angle slope of turbine blade

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.

[0026] The part to be processed is a steam turbine medium-pressure 3-stage moving blade. The fixture is mainly used to process the open slot 100 on the blade 8. The bottom surface 101 of the open slot 100 is on a slope with a complex dihedral angle, α=10 °, β=2.37°. See Picture 1-1 , Figure 1-2 , Figure 7 Blade 8 in. In the present invention, the axial direction and the radial direction are the axial direction and the radial direction of the blade 8 .

[0027] Such as Picture 1-1 , Figure 1-2 As shown, the device of the present invention includes a tailstock top assembly 1 , an end face positioning assembly 2 , a side positioning assembly 3 , a clamping assembly 4 , an auxiliary pressing element 5 , an inclined bottom plate assembly 6 and an inclined pad assembly 7 . Tailstock tip assembly 1 , end face positioning assembly 2 , cla...

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Abstract

The invention provides a special fixture used for processing an open slot on a spatial dihedral angle slope of a turbine blade, and the special fixture is characterized by comprising a slope baseboard component capable of adjusting a radial gradient, wherein a tailstock tip component and an end face positioning component are oppositely arranged at two radial ends of the slope baseboard component; a slope cushion component which is capable of adjusting an axial gradient and a height is arranged on the slope baseboard component between the tailstock tip component and the end face positioning component; a side wall positioning component is also arranged on the slope baseboard component; the side wall positioning component can axially feed a side wall positioning element which is contained in the side wall positioning component; a clamping component is also arranged on the slope baseboard component; and a pressing head capable of feeding downward is arranged at the tail end of the clamping component. The fixture provided by the invention can firmly and accurately position a device, can quickly and efficiently process the open slot meeting a design demand on a size precision and a position precision, and has ultrahigh surface glossiness.

Description

Technical field [0001] The invention belongs to the technical field of tooling for machine tools, and in particular relates to a special fixture for machining open grooves on slopes in complex spaces on a four-coordinate numerical control milling machine. Background technique [0002] Such as Figure 7 As shown, the overall structure of the steam turbine blade 8 is extremely complicated, and it is composed of three parts: an irregular prismatic blade crown 1', an irregular prismatic blade root 2' and a twisted curved blade body 3'. There are symmetrical arc-shaped tenon teeth on the root 2', and the twisted arc-shaped leaf body 3' is divided into a basin arc 31' and a back arc 32'. [0003] Such as Figure 1-2 , there is an included angle α between the bottom surface 101 of the open slot 100 located at the center of the radial surface of the root pot of the steam turbine blade 8 and the central radial surface A of the blade, as Picture 1-1 , and the bottom surface 101 of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06
Inventor 刘建文
Owner 四川省自贡市海川实业有限公司
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