Closed impeller electric spark machining device and machining method

A closed impeller and processing device technology, applied in the field of impeller processing, can solve the problems of low processing efficiency, achieve the effects of improving processing efficiency, improving the machining accuracy of flow channels, and improving cooling and chip removal
CN106735633AActive Publication Date: 2017-05-31北京市电加工研究所有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京市电加工研究所有限公司
Publication Date
2017-05-31

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Abstract

The invention relates to the technical field of impeller machining, in particular to a closed impeller electric spark machining device and machining method. The closed impeller electric spark machining device comprises an impeller installation fixture for installing a closed impeller to be machined, a pre-machining electrode installation fixture and a plurality of pre-machining electrodes; the impeller installation fixture is provided with an installation shaft, the closed impeller to be machined is provided with a center positioning hole, and the closed impeller to be machined sleeves the installation shaft through the center positioning hole; the electrode installation fixture comprises a first electrode installation seat, the multiple pre-machining electrodes are all connected with the first electrode installation seat and arranged circumferentially, and the number of the pre-machining electrodes is the same as that of flow channels of the closed impeller to be machined; in the machining process, each pre-machining electrode corresponds to a flow channel inlet of the closed impeller to be machined; and the closed impeller electric spark machining device furthermore comprises a first drive mechanism for driving the electrode installation fixture to perform straight line movement in the Z-axis direction, and the Z axis is the extension direction of the installation shaft. By means of the closed impeller electric spark machining device and machining method, machining efficiency is improved, and machining precision is guaranteed.
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Description

technical field

[0001] The invention relates to the technical field of impeller machining, in particular to a closed impeller electric discharge machining device and a machining method. Background technique

[0002] Closed impellers are increasingly used in advanced turbomachinery used in aerospace engines, petrochemical and other fields. The structure of the closed impeller is very complicated, and the machining accessibility is poor. In addition, high-temperature alloys or titanium alloys and other difficult-to-machine materials are often used. It is difficult to achieve high-precision machining by traditional cutting. EDM uses pulsed spark discharge between tools and workpieces to etch away excess material, which has the advantages of high precision and wide material adaptability. The existing closed-type impeller EDM technology uses the spindle head to drive the electrode for machining, and the machining efficiency is low. Therefore, under the existing EDM processing c...

Claims

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