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Six point positioning base line transfer method for refine casting blade

A six-point positioning, blade technology, applied in other manufacturing equipment/tools, manufacturing tools, etc., can solve the problems of blade surface indentation, affecting blade quality, heavy weight, etc., achieve accurate processing benchmarks, reduce labor intensity, and improve efficiency Effect

Inactive Publication Date: 2008-05-21
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the turbine blades of heavy-duty gas turbines, due to their large volume and weight, it is difficult to carry them after being cast in a square box; and directly using a six-point positioning fixture to support and compress the blade wool will cause the blades produced There are indentations on the surface, which affects the quality of the blade, and the six-point positioning fixture is clamped and pressed unreliably

Method used

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  • Six point positioning base line transfer method for refine casting blade
  • Six point positioning base line transfer method for refine casting blade
  • Six point positioning base line transfer method for refine casting blade

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1: with heavy-duty gas turbine blade (such as figure 1 , figure 2 , image 3 Shown) as an example, the method for its six-point positioning reference transfer includes the following steps:

[0021] 1. Adjust the six-point positioning fixture: the six-point positioning fixture is a fixture for clamping the workpiece on the machine tool. The six-point positioning fixture is determined according to the six positioning points D1, D2, D3, D4, D5, and P1 on the precision casting blade body The position and orientation of the hold-down mechanism;

[0022] 2. Casting blade wool: Compared with the size of the outer contour C2 of the finished precision casting blade, there is a straight surface on the blade edge C2 on the side of the wool crown 1, and the distance between the remaining straight surface and the edge C2 of the finished blade is the smallest The range is 2mm ~ 4mm, for subsequent wire cutting processing applications;

[0023] 3. Install the six-point...

Embodiment 2

[0026] Embodiment 2: with certain type submarine turbine blade (as Figure 4 , Figure 5 , Figure 6 , Figure 7 Shown) as an example, the method for its six-point positioning reference transfer includes the following steps:

[0027] 1. Adjust the six-point positioning fixture: the six-point positioning fixture is a fixture for clamping the workpiece on the machine tool. The six-point positioning fixture is determined according to the six positioning points S1, S2, S3, S4, S5, and S6 on the precision casting blade body The position and orientation of the hold-down mechanism;

[0028] 2. Casting blade wool: Compared with the size of the outer profile C4 of the finished precision casting blade, there is a straight surface on the edge C4 of the blade crown 1 side of the wool material, and the distance between the remaining straight surface and the edge C4 of the finished blade is the smallest The range is 2mm ~ 4mm, for subsequent wire cutting processing applications;

[002...

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Abstract

The vane precision casting and six point positioning datum transferring process includes the following steps: 1. regulating the six point positioning fixture to determine the position and direction of the pressing mechanism in the six point positioning fixture based on the six positioning points on the vane; 2. casting the vane blank with finishing allowance of at least 2-4 mm; 3. installing the regulated six point positioning fixture inside the electric spark cutting machine; 4. fixing the van blank inside the six point positioning fixture; and 5. wire electrode cutting in the electric spark cutting machine to required sizes. The present invention has the advantages of capability of realizing datum transfer of super large precision cast vane, machining precision as high as 0.02 mm, lowered labor strength, shortened machining period and raised work efficiency.

Description

technical field [0001] The invention relates to a method for transferring a six-point positioning reference, in particular to a method for transferring a six-point positioning reference for a precision casting blade. technical background [0002] The traditional six-point positioning datum transfer method for precision casting blades is to use the method of casting square boxes. The specific process steps are: clamp the blade wool and the prefabricated square box on the six-point positioning fixture, so that the blade wool and the square box are kept Relative positional relationship, and then casting low-melting point alloy between the blade wool and the square box, so that the blade wool and the square box are integrated, and the outer surface of the square box is used as the processing reference for clamping to realize machining. However, for the turbine blades of heavy-duty gas turbines, due to their large volume and weight, it is difficult to carry them after being cast ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P23/04B23H9/00
Inventor 孙秉铎吴卫东郭彦东
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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