Suction type electrolytic machining device and method for finishing internal structure

Abstract

The invention discloses a suction type electrolytic machining device and method for finishing an internal structure. The suction type electrolytic machining device comprises a workpiece anode, a tool cathode, insulating layers, a clamping frame, a sliding block, a bolt, a sealing gasket, a liquid extraction opening and a compression screw, and the problem that electrolysis products and bubbles are difficult to discharge during electrolytic machining of the internal structure is effectively solved; the insulating layers are fixedly distributed at equal intervals in the axis direction of a workpiece cathode to ensure insulation of the tool cathode and the workpiece anode in the machining process; the workpiece anode is clamped through the clamping frame, the sliding block and the bolt; the electrolyte in the internal structure of the workpiece anode is pumped out by connecting the liquid extraction opening and a suction pump through a connecting pipe, and the bubbles and the electrolysis products generated in the electrochemical reaction process are brought out; during machining, the tool cathode is moved for a certain distance at a certain time interval, so that the area of which the electric field is originally shielded by the insulating layers is processed, and the electrolytic finishing machining of the whole internal structure is realized; according to the device and the method, the electrolyte can be pumped out of the internal structure when the internal structure is subjected to electrolytic finishing machining, the bubbles and the electrolytic products generated in the electrolytic machining process are taken away, and electrolytic finishing machining of the surface of the whole internal structure is achieved.

Description

technical field [0001] The invention relates to a suction-type electrolytic processing device and method for finishing internal structures, belonging to the field of electrolytic processing equipment. Background technique [0002] Additive manufacturing technology is a key core technology that the world's scientific and technological powers are competing to develop, and it has opened up a new technological approach for the design and manufacture of high-performance metal components in aerospace and other fields. Aerospace metal components are characterized by light weight, difficult processing, and high performance. Among them, some components in aerospace engines have internal structures; it is difficult to guarantee the surface quality of the internal structures of such components prepared by additive manufacturing, and there is a large amount of unfused powder, which further deteriorates its surface quality, making it difficult for its components to achieve aviation. The...

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Problems solved by technology

Since electrolytic machining is a non-contact process with high flexibility and processing flexibility, the internal structure of the additive manufacturing component can be finished only by necessary insulation means to ensure that the component and the cathode are not in contact; however, due to the internal structure Due to the airtightness of the electrolysis process, there are bubbles and the electrolysis product is difficult to discharge from the internal structure. In addition, the insulation method will also hinder the flow of the electrolyte. Therefore, it is difficult to discharge the electrolysis product and update the electrolyte by conventional flushing methods. This hinders the electrochemical reaction between the surface of the internal structure and the electrode

[0004] In order to solve the problem that air bubbles and electrolytic products are difficult to discharge from the internal structure, this patent proposes a suction electrolytic processing device and method for finishing the internal structure

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