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A five-axis EDM closed impeller trajectory planning method

A closed impeller and trajectory planning technology, which is applied to instruments, image data processing, etc., can solve the problems of difficulty in inter-electrode gap control and limited application

Active Publication Date: 2020-11-13
航天科工哈尔滨风华有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Electrochemical machining is widely used in the machining of complex profiles, but it is difficult to control the gap between poles, which limits its application in the machining of closed integral turbine blisks.

Method used

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  • A five-axis EDM closed impeller trajectory planning method
  • A five-axis EDM closed impeller trajectory planning method
  • A five-axis EDM closed impeller trajectory planning method

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Embodiment Construction

[0030] The present invention provides an embodiment of a five-axis electric discharge machining closed impeller track planning method, in order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purpose and characteristics of the present invention And advantage can be more obvious and easy to understand, below in conjunction with accompanying drawing, technical solution in the present invention is described in further detail:

[0031] The present invention is realized by the following method: a five-axis electric discharge machining closed impeller track planning method such as figure 1 As shown, step 1 S101, obtain the three-dimensional digital model of the closed impeller, define the surface of the blade pot as A, the curved surface of the blade back as B, the surface of the inner hub as H, and the surface of the outer hub as S, the curved surface of the leading edge is ...

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Abstract

The invention disclosed a track planning method for achieving five-axis electrosparking on an enclosed impeller. The method comprises the steps that an enclosed impeller three-dimensional digital model is acquired, the machining area is divided according to the three-dimensional model, the parting line of a gas inlet area and an exhaust opening area of a meridionalchannel is made, an equal gap method is adopted for solving an electrode forming face, and an electrode track is designed through the conjugate path planning method. The problems that due to the fact that multi-axis milling adopted in traditional machining methods is enclosed overall turbine impeller disc parts, a series of problems about tool accessibility and the like are brought, and control over the interelectrode gap of electrochemical machining on complex surface forming machining is difficult are solved. By means of the method, the electrode precision and the electrode path track accuracy can be improved.

Description

technical field [0001] The invention relates to the field of machining closed integral turbine blisk parts, in particular to a five-axis electric discharge machining closed impeller trajectory planning method. Background technique [0002] Multi-axis milling is a traditional processing method for closed integral turbine blisk parts, but the semi-closed and twisted flow path structure still brings a series of problems such as tool accessibility to milling. Electrochemical machining has been widely used in the machining of complex profiles, but it is difficult to control the gap between poles, which limits its application in the machining of closed integral turbine blisks. Multi-axis linkage EDM is an effective machining method for closed integral turbine blisk parts. The principle is to reduce the size of the tool electrode prototype filled with the turbine blisk flow channel to obtain enough movement space. The tool electrode follows a complex After the movement path of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H9/10B23H1/00G06T19/00
CPCB23H1/00B23H9/10G06T19/00
Inventor 刘忠璐唐博雅关博文张志超王海峰金紫翔
Owner 航天科工哈尔滨风华有限公司
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