CN112059334B - Electric field regulation and control jacking electrolytic machining device and method - Google Patents
Electric field regulation and control jacking electrolytic machining device and method Download PDFInfo
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- CN112059334B CN112059334B CN202010816402.4A CN202010816402A CN112059334B CN 112059334 B CN112059334 B CN 112059334B CN 202010816402 A CN202010816402 A CN 202010816402A CN 112059334 B CN112059334 B CN 112059334B
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- electric field
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
Abstract
The invention discloses an electric field regulation and control jacking electrolytic machining device and method, and belongs to the field of electrolytic machining. The device mainly comprises a cathode head, an electric field regulating sleeve, an electric field regulating chute, an insulating sleeve, a cover plate and the like. During the electrolytic machining of the trepanning, the machined part of the blade continuously extends into the electric field regulating and controlling sleeve, and the electric field regulating and controlling sleeve surrounds the outer side of the machined part of the blade to inhibit stray corrosion of stray current to the machined part of the blade. The electric field regulation and control sleeve is fixed through the electric field regulation and control spout, and its position can be followed certain limit and adjusted to adjust and control stray current according to the needs of actual processing, realize the tapering control of blade. The method can reduce the stray corrosion of the machined part of the blade and improve the surface quality of the machined workpiece.
Description
Technical Field
The invention provides an electric field regulation and control jacking electrolytic machining device and method, and belongs to the technical field of electrolytic machining.
Background
The complex molded surfaces of the blades and the like are main parts of the aeroengine, the molded surfaces are complex in distortion, the blades are usually made of titanium alloy, high-temperature alloy and other difficult-to-machine materials, and the machining difficulty is high by utilizing a traditional cutting method. The electrolytic machining has the advantages of high machining efficiency, no residual stress, no cutter loss, no influence of mechanical properties such as material strength and hardness, and the like, and is a main manufacturing method of complex molded surfaces such as blades.
Stray corrosion is one of the key problems in the electrolytic machining process, and adversely affects the taper and surface quality of the machined workpiece. A number of methods have been proposed to suppress the stray corrosion problem. In patent gas insulation protective sleeve material electrolytic machining cathode system and processing method (application number 201710463442.3 inventor Nanjing aerospace university of aerospace Zhu dong, Huntingyan, Liujia, slowly uprising), through supplying compressed gas to the blade processed area, to reduce the stray electrolyte that gets into this area, thereby reduce stray corrosion, be favorable to improving the machining precision of blade. Because the electrolyte flow mode adopted by the method is a lateral flow mode and the mode of providing compressed gas is uniform gas supply, the pressure loss in the electrolyte flow process can cause the uneven gas-liquid distribution. However, the multi-potential electrolytic machining method cannot realize the machining of the blade structure. In the multi-potential electrolytic machining method (application number 201410373682.0 inventor, Guangdong university of industry, Rohongping, Wuming, Guo bell, Jiang Tree town, Zyongjun, Sun Tao) in the patent, a high-potential outer electrode is arranged, a low-potential inner electrode and a workpiece with a potential between the two electrodes are arranged, and the high-potential outer electrode is utilized to attract stray power lines, so that stray corrosion of hole and groove structures is reduced. In a patent electric field regulation and control electrolytic milling processing system and method (application number 201610852155.7 inventor Nanjing aerospace university Lihansong, Niuqu, Triton), a main power supply and an auxiliary power supply are respectively connected with a workpiece and an electric field regulation and control mode is adopted, so that the processing precision of electrolytic milling processing is improved. However, the electric field regulation and control electrolytic milling processing system and method are mainly used for processing parts such as special-shaped reinforcing ribs and bosses, and the processing of blade structures cannot be realized.
In summary, there is a need for a new electrolytic machining method that effectively suppresses stray corrosion during machining of blades.
Disclosure of Invention
The invention aims to provide an electric field regulation and control jacking electrolytic machining device and method, which are used for solving the problem of stray corrosion in the jacking electrolytic machining process, so that the shape precision and the surface quality of a machined blade are improved.
An electric field regulation and control trepanning electrochemical machining method and device are characterized in that:
the device comprises a cathode head, an electric field regulating sleeve, an electric field regulating chute, an insulating sleeve, a cover plate, a power supply, an electronic load and an anode workpiece; the insulating sleeve is positioned above the cathode head; the electric field regulating sleeve is arranged inside the insulating sleeve, and the outer wall of the electric field regulating sleeve is attached to the inner wall of the insulating sleeve; the cover plate is positioned above the electric field regulating sleeve; the anode workpiece is connected to the positive electrode of a power supply and is connected with an electronic load in series, and the electric field regulating sleeve is connected to the positive electrode of the power supply and is connected with the anode workpiece and the electronic load in parallel; the electric field regulating sleeve is arranged inside the insulating sleeve through an electric field regulating chute; the electric field regulating sleeve can slide in the length range of the electric field regulating chute; due to the partial pressure action of the electronic load, the surface potential of the electric field regulating sleeve is higher than that of the anode workpiece, the direction of a part of electric lines of force pointing to the cathode head from the processed area of the anode workpiece is reversed and is changed into the direction pointing to the processed area of the anode workpiece from the electric field regulating sleeve, and therefore the processed area of the anode workpiece is protected.
Advantageous effects
1. The invention can inhibit the stray corrosion of the processed area of the workpiece and improve the processing quality by the attraction effect of the electric field regulating sleeve with higher surface potential on the stray current. The surface potential of the electric field regulating sleeve is higher than that of the workpiece, so that the direction of the stray current in the processed region of the workpiece is changed, namely the direction from the processed region of the workpiece to the cathode head is changed into the direction from the electric field regulating sleeve to the processed region of the workpiece, the processed region of the workpiece is protected, and the processing quality of the workpiece is improved.
2. According to the invention, the blades with different tapers can be obtained according to actual processing requirements through the position adjusting effect of the electric field adjusting chute on the electric field adjusting sleeve. The shielding degree of stray current can be regulated and controlled by regulating the distance from the lower surface of the electric field regulation and control sleeve to the upper surface of the cathode head. The smaller the distance from the lower surface of the electric field regulating sleeve to the upper surface of the cathode head, the earlier the machined part of the blade extends into the electric field regulating sleeve to be protected, the less the time of being corroded by stray current is, and the smaller the taper of the blade is; the larger the distance from the lower surface of the electric field regulating sleeve to the upper surface of the cathode head is, the later the machined part of the blade extends into the electric field regulating sleeve to be protected, and the longer the time of being corroded by stray current is, the larger the taper of the blade is. Therefore, the taper of the blade can be adjusted through the electric field regulation and control chute.
Drawings
FIG. 1 is a schematic diagram of an electric field control nesting electrochemical machining method;
FIG. 2 is a circuit diagram of an electric field controlled trepanning electrochemical machining method;
the following describes in detail embodiments of the present invention with reference to examples.
The invention relates to an electrolytic processing method and a device of an electric field regulation and control jacking, wherein the device comprises an insulating sleeve, a cathode head, an electric field regulation and control sleeve, an electric field regulation and control chute and a cover plate; the cathode head, the electric field regulation and control sleeve and the electric field regulation and control chute are made of conductive materials, and the insulating sleeve and the cover plate are made of insulating materials; the shapes of the cathode head, the insulating sleeve and the electric field regulating sleeve are determined according to the shape of the blade to be processed.
The insulating sleeve is positioned above the cathode head, and the contour of the inner wall of the insulating sleeve is consistent with that of the inner wall of the cathode head main body and exceeds that of the inner wall of the cathode head main body; the outer wall of the electric field regulating sleeve and the inner wall of the insulating sleeve are mutually attached and have consistent shapes; the cover plate is positioned above the insulating sleeve, and the middle part of the cover plate is provided with a groove which is communicated with the front part and the rear part and is used for accommodating the upper end of the electric field regulating sleeve; the electric field regulation and control sleeve is installed in the insulating sleeve through the electric field regulation and control spout, and the position of electric field regulation and control sleeve in the spout can be adjusted from top to bottom to adjust and control stray corrosion power line according to the needs of actual processing, obtain the blade of different tapering. The workpiece is connected to the positive electrode of the power supply and is connected with the electronic load in series, and the electric field regulating sleeve is connected to the positive electrode of the power supply and is connected with the workpiece and the electronic load in parallel.
The electrolytic machining process comprises the following steps:
the method comprises the following steps: installing a cathode, a clamp thereof and a workpiece, wherein the cathode is connected with a negative electrode of a power supply, the workpiece is connected with a positive electrode of the power supply, and is connected with an electronic load in series;
step two: and (6) tool setting.
Step three: and starting an electrolyte circulating system and introducing electrolyte.
Step four: and starting the power supply, and electrifying the cathode, the anode and the electric field regulating sleeve.
Step five: starting an operation program of the numerical control machine tool, feeding a cathode along a workpiece, and continuously extending a machined part of the workpiece into the insulating sleeve and then into the electric field regulating sleeve; the bottom surface of the cathode head is a machined surface, and redundant materials are removed through electrochemical dissolution to obtain the blade with a specific shape.
Step six: and after the processing is finished, the power supply and the electrolyte circulating system are closed, and the cathode is returned to the initial position.
Claims (2)
1. The utility model provides an electric field regulation and control jacking electrolytic machining device which characterized in that:
the device comprises a cathode head (2), an electric field regulating sleeve (4), an electric field regulating chute (5), an insulating sleeve (3), a cover plate (6), a power supply, an electronic load and an anode workpiece;
the insulating sleeve (3) is positioned above the cathode head (2); the electric field regulating sleeve (4) is arranged inside the insulating sleeve (3), and the outer wall of the electric field regulating sleeve (4) is attached to the inner wall of the insulating sleeve (3); the cover plate (6) is positioned above the electric field regulation and control sleeve (4);
the anode workpiece is connected to the positive pole of a power supply and is connected with an electronic load in series, and the electric field regulating sleeve (4) is connected to the positive pole of the power supply and is connected with the anode workpiece and the electronic load in parallel; the cathode head (2) is connected with the negative electrode of the power supply;
the electric field regulation and control sleeve (4) is arranged inside the insulation sleeve (3) through an electric field regulation and control chute (5); the electric field regulating sleeve (4) can slide in the length range of the electric field regulating chute (5).
2. The method of electric field conditioning trepanning electrochemical machining apparatus of claim 1, characterized in that:
due to the partial pressure action of the electronic load, the surface potential of the electric field regulating sleeve (4) is higher than that of the anode workpiece, the direction of a part of electric lines of force pointing to the cathode head (2) from the processed area of the anode workpiece is reversed, and the electric lines of force are changed into the direction pointing to the processed area of the anode workpiece from the electric field regulating sleeve (4), so that the processed area of the anode workpiece is protected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010816402.4A CN112059334B (en) | 2020-08-14 | 2020-08-14 | Electric field regulation and control jacking electrolytic machining device and method |
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| CN202010816402.4A CN112059334B (en) | 2020-08-14 | 2020-08-14 | Electric field regulation and control jacking electrolytic machining device and method |
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| CN112059334A CN112059334A (en) | 2020-12-11 |
| CN112059334B true CN112059334B (en) | 2021-10-01 |
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| CN103317196A (en) * | 2013-05-27 | 2013-09-25 | 南京航空航天大学 | Electrochemical machining method for auxiliary anode tube electrode |
| CN104227157A (en) * | 2014-08-01 | 2014-12-24 | 广东工业大学 | Multi-potential electrolytic processing method |
| CN105522239A (en) * | 2016-01-14 | 2016-04-27 | 南京航空航天大学 | Electrochemical machining bipolar electrode of revolution body surface boss structure and electrochemical machining method of electrochemical machining bipolar electrode |
| CN106041235A (en) * | 2016-07-11 | 2016-10-26 | 南京航空航天大学 | Follow-up auxiliary anode electrolytic wire cut machining system and method |
| CN109570666A (en) * | 2018-11-05 | 2019-04-05 | 南京航空航天大学 | It is electrolysed linear cutter bipolarity tool-electrode and production and processing method |
-
2020
- 2020-08-14 CN CN202010816402.4A patent/CN112059334B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103317196A (en) * | 2013-05-27 | 2013-09-25 | 南京航空航天大学 | Electrochemical machining method for auxiliary anode tube electrode |
| CN104227157A (en) * | 2014-08-01 | 2014-12-24 | 广东工业大学 | Multi-potential electrolytic processing method |
| CN105522239A (en) * | 2016-01-14 | 2016-04-27 | 南京航空航天大学 | Electrochemical machining bipolar electrode of revolution body surface boss structure and electrochemical machining method of electrochemical machining bipolar electrode |
| CN106041235A (en) * | 2016-07-11 | 2016-10-26 | 南京航空航天大学 | Follow-up auxiliary anode electrolytic wire cut machining system and method |
| CN109570666A (en) * | 2018-11-05 | 2019-04-05 | 南京航空航天大学 | It is electrolysed linear cutter bipolarity tool-electrode and production and processing method |
Non-Patent Citations (1)
| Title |
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| 扩压器套料电解加工流场优化设计及实验研究;许绝舞等;《电加工与模具》;20180228;第24-28页 * |
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