Turning method of thin-wall vane of leaf disc type part

A technology of disk parts and blades, which is applied in the field of thin-walled blade processing technology, can solve problems such as deformation and vibration, and achieve the effects of easy cutting, reduced vibration and deformation, and improved processing accuracy

Inactive Publication Date: 2011-05-25
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of vibration and deformation caused by discontinuous cutting of thin-walled blades of blisk-like parts, the present invention designs a method that can improve the stiffness of thin-walled blades and the machining accuracy of blisks when turning their conical curved surfaces. Method for turning thin-walled blades of blisk-like parts

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  • Turning method of thin-wall vane of leaf disc type part
  • Turning method of thin-wall vane of leaf disc type part
  • Turning method of thin-wall vane of leaf disc type part

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 1-2 As shown, a method for turning thin-walled blades of a semi-open three-dimensional flow impeller structure includes the following steps:

[0025] A. Fill each flow channel of the impeller, that is, the gap between the two blades 1, with polyurethane foaming agent 2;

[0026] B. After the polyurethane foaming agent 2 is solidified, position and clamp the impeller with a special fixture, and after alignment on the lathe, turn the outer edge profile of the blade 1;

[0027] C. After the turning process is completed, the polyurethane foaming agent 2 can be removed by cutting or sanding.

[0028] The performance of polyurethane whipping agent 2 of the present invention meets the following requirements:

[0029] Density not less than 10kg / m 3 ;

[0030] Tensile bond strength not less than 80kPa;

[0031] The shear strength is not less than 80kPa;

[...

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Abstract

The invention discloses a turning method of a thin-wall vane of a leaf disc type part, which comprises the following steps: a polyurethane foaming agent is filled in each flow channel of an impeller, i.e. a gap between two vanes; after the polyurethane foaming agent is solidified, the impeller is positioned and clamped by a special fixture, and the periphery molded surface of the vane is turned after the impeller is aligned by a lathe; and after turning is completed, the polyurethane foaming agent is eliminated by cutting or sanding. Because the polyurethane foaming agent adopted in the method has certain strength after being filled, no adverse effect is caused to the leaf disc type part, and the cutting is easy. Filling the polyurethane foaming agent between the two vanes is equivalent to supporting the vanes, so the rigidity of each vane in turning is effectively enhanced, the discontinuity of turning is simultaneously improved, and chattering and deformation in processing are relieved so as to improve the processing accuracy of the periphery molded surface of a vane of a semi-open impeller, particularly a three-dimensional impeller with a wide and deep flow channel.

Description

technical field [0001] The invention relates to a process for processing thin-walled blades of blisk-like parts, in particular to a method for turning thin-walled blades of blisk-like parts. Background technique [0002] The impeller of the centrifugal compressor is one of its core components, which directly affects the performance of the compressor. Therefore, the design and manufacture of the impeller has always been the focus of turbomachinery research. With the advancement of technology, the aerodynamic performance of the impeller is continuously improved, and its structure is becoming more and more complex. The processing requires more man-hours, and the proportion of the impeller processing cost in the entire compressor manufacturing is also increasing. Therefore, the study of new processing methods has always been the goal pursued by the turbomachinery industry. At the same time, the machining accuracy of the impeller also affects the performance of the compressor. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B1/00
Inventor 季田庞占元
Owner DALIAN POLYTECHNIC UNIVERSITY
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