A device and method for multi-channel electrochemical compound machining of a rotary curved surface part

Abstract

The application discloses a kind of rotary curved surface parts multi-channel electrolytic composite machining device and method, including electrolyte tank, pump, pipeline, regulating valve, switch valve, electromagnetic flowmeter, machine tool bed, mobile platform, profiling tool cathode, workpiece and rotating power platform;Multiple pumps are placed in electrolyte tank;The pipeline connects pump, regulating valve, switch valve, electromagnetic flowmeter in series;Profiling tool cathode is fixedly connected from bottom to top with mobile platform;Profiling tool cathode internal flow passage is connected with one liquid inlet channel, and liquid is supplied separately, and the workpiece is installed and fixed on rotating power platform.The application can process entire rotary curved surface at one time, and rough machining and semi-finishing process can be sequentially completed in the same station, the overall machining precision is consistent, the product quality after machining is stable, and the overall machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical processing, and in particular to a device and method for multi-channel electrolytic composite machining of a rotary curved surface part. BACKGROUND

[0002] With the rapid development of aerospace technology, new materials, new processes and new technologies emerge in an endless stream, and the processing and manufacturing of difficult-to-machine materials such as titanium alloy and nickel-based high-temperature alloy have brought new challenges and opportunities, making high-quality and high-efficiency machining the main goal of current research in this field, guiding researchers to continuously explore and strive to break through technical bottlenecks to meet the growing demand for precision manufacturing in the aerospace industry and promote the entire industry to a higher level.

[0003] In the processing and handling of such structural parts, the jet electrolytic milling process exhibits more significant advantages compared to traditional conventional mechanical processing methods. Specifically, the jet electrolytic milling technology uses a specially designed hollow cutter as a cathode, and the electrolyte with a specific initial speed is precisely injected onto the surface of the anode workpiece with opposite potential through the cathode cutter. In this process, the material is removed due to the principle of electrochemical anodic dissolution, and the products generated during processing are smoothly discharged from the processing area along with the flow of electrolyte, effectively ensuring the continuity of the processing process and the stability and reliability of the processing effect, providing a new and highly potential solution for the efficient and precise processing of such structural parts.

[0004] Large thin-walled structural parts, such as machine cases, return capsule side wall load-bearing structures, and large thin-walled hard aluminum alloy box plates, have a size of several meters. Conventional electrolytic milling tools are only tens of millimeters, and it is difficult to achieve an ideal material removal rate when processing such structural parts. When the cathode cutter is widened to several hundred millimeters, flow separation occurs in the cutter flow channel, resulting in chaotic flow at the outlet. This will lead to uneven dissolution in the processing area and undesirable shape profiles. By designing a multi-channel liquid supply, flow separation can be avoided inside the flow channel, and a uniform flow field can be achieved. For the cutter, the increase in the number of cutters can greatly improve the material removal rate. Therefore, it is of great significance to provide a device and method for multi-channel electrolytic milling / electrolytic discharge composite machining of a rotary curved surface part to further improve the material removal efficiency and expand the application range of electrolytic processing technology in the aerospace field. SUMMARY

[0005] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0006] In view of the problems existing in the prior art, the present application is provided.

[0007] Therefore, the present application aims to provide a rotary curved surface part multi-channel electrolytic composite machining device and method, which can machine the entire rotary curved surface at one time, sequentially complete the rough machining and semi-finishing process in the same station, ensure the overall machining precision, and improve the overall machining efficiency.

[0008] To solve the above technical problems, the present application provides the following technical scheme: a rotary curved surface part multi-channel electrolytic composite machining device, comprising an electrolyte tank, a pump, a pipeline, an adjusting valve, an on-off valve, an electromagnetic flowmeter, a machine tool bed, a moving platform, a profiling tool cathode, a workpiece, and a rotating electric platform.

[0009] A plurality of pumps are arranged in the electrolyte tank.

[0010] The pipeline connects the pump, the adjusting valve, the on-off valve, and the electromagnetic flowmeter in series.

[0011] The profiling tool cathode is fixedly connected to the moving platform from bottom to top.

[0012] As a preferred scheme of the rotary curved surface part multi-channel electrolytic composite machining device, the flow rate of each profiling tool cathode inlet is controlled by arranging the pump, the adjusting valve, the on-off valve, and the electromagnetic flowmeter in the multi-channel.

[0013] As a preferred scheme of the rotary curved surface part multi-channel electrolytic composite machining device, the profiling tool cathode is fixedly connected to the moving platform, and the center line is located on the generatrix of the rotary workpiece at different angles.

[0014] As a preferred scheme of the rotary curved surface part multi-channel electrolytic composite machining device, the bottom end of the profiling tool cathode is designed in a profiling manner, and the side curvature is consistent with the curvature of the arc segment.

[0015] A rotary curved surface part multi-channel electrolytic composite machining method, characterized by comprising the following steps:

[0016] Step one, arranging a plurality of pumps in the electrolyte tank;

[0017] Step two, connecting the pump, the adjusting valve, the on-off valve, and the electromagnetic flowmeter in series by using the pipeline;

[0018] Step three, the profile tool cathode is connected with the moving platform;

[0019] Step four, the moving platform is controlled to make the profile tool cathode end face consistent with the gap between the workpiece surface;

[0020] Step five, the electrolyte flow pump is started, and the target flow of each flow channel is set;

[0021] Step six, the electromagnetic flowmeter adjusts the valve through processing the flow signal to ensure that the internal flow of the pipeline is consistent with the target flow;

[0022] Step seven, the power supply and the machine tool control system are started, and the electrolytic milling / electrochemical discharge composite machining is started;

[0023] Step eight, the power supply and the electrolyte are turned off after the machining is completed.

[0024] As a preferred scheme of the method for multi-channel electrolytic composite machining of the rotary curved surface part, the profile tool cathode is parked on an arc segment of the workpiece generatrix, the electrolyte is sprayed into the machining area from the cathode liquid outlet gap, the power supply is turned on, the rotating current guide platform drives the workpiece to rotate to perform the electrolytic milling / electrochemical discharge composite machining, and when one rotation is completed, the whole rotary curved surface machining is completed.

[0025] The present application has the advantages that the rotary curved surface multi-tool integrated machining is proposed, the multi-channel liquid supply is used to realize the cooperation of multiple tools, and the machining efficiency is improved.

[0026] The present application adopts the discrete profile tool cathode design, simplifies the cathode motion trajectory, and widens the application range of the electrolytic milling / electrochemical discharge composite machining. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0028] Fig. 1 It is the overall structure schematic diagram of the device and method for multi-channel electrolytic composite machining of the rotary curved surface part.

[0029] Fig. 2 It is the machining schematic diagram of the device and method for multi-channel electrolytic composite machining of the rotary curved surface part.

[0030] Fig. 3 It is the liquid supply device schematic diagram of the device and method for multi-channel electrolytic composite machining of the rotary curved surface part. DETAILED DESCRIPTION

[0031] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0032] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0033] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0034] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0035] Referring to Figs. 1-3 , a device for multi-channel electrolytic composite machining of a rotary curved surface part is provided, which comprises an electrolyte tank 1, a pump 2, a pipeline 3, an adjusting valve 4, an on-off valve 5, an electromagnetic flowmeter 6, a machine tool bed 7, a moving platform 8, a profiling tool cathode 9, a workpiece 10 and a rotating current guide platform 11;

[0036] A plurality of pumps 2 are arranged in the electrolyte tank 1;

[0037] The pipeline 3 connects the pump 2, the adjusting valve 4, the on-off valve 5 and the electromagnetic flowmeter 6 in series;

[0038] Among them, by arranging the pump 2, the adjusting valve 4, the on-off valve 5 and the electromagnetic flowmeter 6 in the multi-flow channel, the flow of each profiling tool cathode 9 inlet is controlled.

[0039] The profiling tool cathode 9 is fixedly connected to the moving platform 8 from bottom to top; the internal flow channels of the profiling tool cathode 9 are connected to one liquid inlet channel respectively for separate liquid supply; the workpiece 10 is installed and fixed on the rotating current guide platform 11; further, the profiling tool cathode 9 is fixedly connected through the moving platform 8, and the center line is located on the generatrix of the rotary workpiece 10 at different angles; specifically, the bottom end of the profiling tool cathode 9 is designed by profiling, and the side curvature is consistent with the curvature of the arc segment.

[0040] A method for multi-channel electrolytic composite machining of a rotary curved surface part, characterized in that the method comprises the following steps:

[0041] Step one, place multiple pumps 2 in the electrolyte tank 1;

[0042] Step two, use pipeline 3 to connect the pump 2, regulating valve 4, on-off valve 5, and electromagnetic flowmeter 6 in series;

[0043] Step three, connect the profiling tool cathode 9 with the moving platform 8;

[0044] Step four, control the moving platform 8 so that the end face of the profiling tool cathode 9 is consistent with the surface gap of the workpiece 10;

[0045] Step five, turn on the electrolyte flow pump 2 and set the target flow of each flow channel;

[0046] Step six, the electromagnetic flowmeter 6 adjusts the valve by processing the flow signal to ensure that the internal flow of the pipeline is consistent with the target flow;

[0047] Step seven, start the power supply and machine tool control system to begin electrolytic milling / electrochemical discharge composite machining;

[0048] Step eight, turn off the power supply and electrolyte after completing the machining.

[0049] Wherein, the profiling tool cathode 9 is parked at a certain arc segment of the workpiece 10 generatrix, the electrolyte is sprayed into the machining area from the cathode liquid outlet seam, the power supply is turned on, and the rotating current platform 11 drives the workpiece 10 to rotate for electrolytic milling / electrochemical discharge composite machining, and when a circle is rotated, the entire rotary curved surface machining is completed.

[0050] The method aims to multi-flow channel liquid supply, multi-tool cathode cooperation, and efficient electrolytic milling of large-size thin-walled weak rigidity parts. Multiple pumps 2 extract electrolyte to supply liquid to multiple flow channels 3, and the flow channels are connected with tool cathodes 9 to uniform the flow field of the tool cathodes 9. The machine tool control system and clamps are used to realize multi-tool cathode cooperative machining to improve material removal efficiency.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A device for multi-channel electrochemical compound machining of a rotary curved surface part, characterized in that, The electrolyte tank (1), the pump (2), the pipeline (3), the regulating valve (4), the switch valve (5), the electromagnetic flowmeter (6), the machine tool bed (7), the moving platform (8), the profiling tool cathode (9), the workpiece (10) and the rotary power supply platform (11) are included. A plurality of the pump (2) is arranged in the electrolyte tank (1). The pipeline (3) connects the pump (2), the regulating valve (4), the switch valve (5) and the electromagnetic flowmeter (6) in series. The profiling tool cathode (9) is fixedly connected to the moving platform (8) from bottom to top.

2. A method for multi-channel electrochemical compound machining of a rotary curved surface part, based on the device for multi-channel electrochemical compound machining of a rotary curved surface part according to claim 1, characterized in that: The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8).

3. The method of multi-pass electrochemical complex machining of a revolution surface part according to claim 2, characterized in that: The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). The profiling tool cathode (9) is connected to the moving platform (8). 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