CN113210769A - Machining electrode, electrolytic milling machining device and machining method applying same - Google Patents
Machining electrode, electrolytic milling machining device and machining method applying same Download PDFInfo
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- CN113210769A CN113210769A CN202110361810.XA CN202110361810A CN113210769A CN 113210769 A CN113210769 A CN 113210769A CN 202110361810 A CN202110361810 A CN 202110361810A CN 113210769 A CN113210769 A CN 113210769A
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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
- B23H3/04—Electrodes specially adapted therefor or their manufacture
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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
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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
- B23H3/10—Supply or regeneration of working media
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Abstract
The invention relates to the technical field of electrolytic machining, in particular to a machining electrode, an electrolytic milling machining device and a machining method using the same. An electrolytic milling device comprises a moving device capable of moving along XYZ directions, a hollow spindle motor arranged on the moving device, a power supply and a processing electrode, wherein the hollow processing electrode is fixedly arranged on the hollow spindle motor, the hollow spindle motor controls the processing electrode to rotate, the electrolyte is sprayed to the workpiece to be machined through the hollow structure, after the workpiece to be machined is electrified, the wall surface of the workpiece to be machined is subjected to electrochemical dissolution, the machining gap is subjected to alternating change under the rotation action of the machining electrode, the axial flow velocity and the flow of the electrolyte in the alternating machining gap are driven to be subjected to periodic change along with the periodic change by the machining gap with the periodic change, the flow field of any point in the machining gap is subjected to axial pulsation change, the axial mass transfer process of the machining gap when the workpiece is subjected to anode electrochemical dissolution is enhanced, the machined product is rapidly discharged out of a machining area, and the milling process is efficiently and stably carried out.
Description
Technical Field
The invention relates to the technical field of electrolytic machining, in particular to a machining electrode, an electrolytic milling machining device and a machining method using the same.
Background
The complex cavity structures such as deep and narrow grooves play an important role as complex structural parts with wide application in the fields of aerospace and the like. Because the fields of aerospace and the like mostly adopt materials which are difficult to cut, such as high-temperature alloy, titanium alloy and the like, great challenges are brought to processing.
Electrolytic machining belongs to one of special machining technologies, removes materials by utilizing a metal ion dissolving mode, has the advantages of high machining efficiency, no thermal stress in machining, no electrode loss, independence on material strength and hardness and the like, and plays an important role in machining metal materials difficult to machine.
The tube electrode electrochemical machining is an important component of the electrochemical machining technology, wherein the machining electrode is adopted for carrying out internal-spraying axial liquid supply, then the electrolyte enters a machining gap formed by the side wall of the tube electrode and the wall surface to be machined at a large corner, and the side wall of the tube electrode is utilized for providing an electric field to carry out electrochemical machining forming of complex cavity structures such as deep and narrow grooves. However, the conventional electrochemical machining tool electrode usually adopts a circular-section tube electrode, the machining gap is small in the electrochemical machining process, the flow resistance is large, and great difficulty is caused in electrolyte updating and discharge of machining byproducts, so that the electrochemical machining efficiency is low and the process stability is poor. If the mass transfer process in the machining gap can be enhanced by a certain technical means, the method has important significance for promoting the development of the tube electrode electrochemical machining technology and improving the machining capability of a complex cavity structure of a difficult-to-machine material.
In chinese patent publication No. CN111468726A, a method for manufacturing a tunnel member based on selective laser melting and electrolytic machining is disclosed, which combines selective laser melting technology and electrolytic machining technology to machine a tunnel, but this technical scheme has a problem that machining waste cannot be discharged quickly, and the machining waste is accumulated, which may cause wear of the machined tunnel and damage of machining equipment.
Disclosure of Invention
The invention provides a processing electrode for solving the problems that in the prior art, a processing electrode in electrolytic processing usually adopts a circular-section tube electrode, the processing gap is small, the liquid flow resistance is large, and great difficulty is caused to the updating of electrolyte and the discharge of processing byproducts in the electrolytic processing process, so that the electrolytic processing efficiency is low and the process stability is poor.
In order to solve the technical problems, the invention adopts the technical scheme that: the machining electrode comprises an electrode body with a hollow structure, wherein the electrode body comprises a clamping section and a machining section which are connected with each other, and the cross section of the machining section is a non-circular section.
In the technical scheme, a processing electrode is arranged on an electrolytic milling device and is connected with a negative electrode of a power supply, a workpiece to be processed is connected with a positive electrode of the power supply, external electrolyte is injected through an electrode body with a hollow structure, the wall surface to be processed is electrochemically dissolved under the electrochemical action, a processing section with a non-circular cross section forms a processing gap with different sizes with the wall surface to be processed during electrolytic milling, the processing gap can be subjected to alternating change under the action of a rotating processing electrode to form a processing gap with periodic change, the electrolyte is axially sprayed from the bottom end of the processing section through the electrode body with the hollow structure, then the electrolyte flows to a processed area with small flow resistance, and the sprayed electrolyte can enter the alternating processing gap formed by the outer wall surface of the processing section and the wall surface to be processed by bypassing the end surface of the processing electrode, and flows out in the axial direction. Under the condition that the pressure of an electrolyte inlet is constant, the processing gap with periodic change drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the axial flow velocity and the flow, so that the flow field at any point in the processing gap is changed along with axial pulsation, the axial flushing effect is enhanced by utilizing the characteristics of large turbulent energy and strong disturbance of the pulsating flow field, the axial mass transfer process of the processing gap when the anode of a workpiece is subjected to electrochemical dissolution is enhanced, and a processed product is rapidly discharged out of a processing area by utilizing the generated pulsating flow field, so that the milling process is efficiently and stably carried out.
Preferably, the cross-section of the processing section is polygonal.
Preferably, the cross section of the processing section is a regular polygon. In the technical scheme, under the electrochemical action, the wall surface to be processed is electrochemically dissolved, the processing gap is subjected to alternating change under the rotation action of a processing electrode with a regular polygon section, under the condition that the pressure of an electrolyte inlet is constant, the periodically changed processing gap drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the periodic change, so that the flow field at any point in the processing gap uniformly changes in a pulsating manner along the axial direction, thereby strengthening the axial flushing effect by utilizing the characteristics of large turbulent energy and strong disturbance of the uniform pulsating flow field, further strengthening the axial mass transfer process of the processing gap when the anode electrochemical dissolution occurs to the workpiece, rapidly discharging the processed product out of the processing area by utilizing the generated uniform pulsating flow field, therefore, the milling process is more efficiently and stably carried out, the machining precision is improved, and meanwhile, the phenomena of short circuit and spark in the machining process are reduced.
Preferably, the clamping section is circular in cross-section.
The invention provides an electrolytic milling device, which comprises a moving device capable of moving along XYZ directions, a hollow spindle motor arranged on the moving device, a power supply and a processing electrode as described above, wherein a spindle is arranged on the hollow spindle motor, a hollow structure for adding electrolyte is arranged in the spindle, the processing electrode is arranged on the spindle and is communicated with one end of the hollow structure, the other end of the hollow structure is connected with a liquid adding pump through a pipeline, the positive electrode of the power supply is used for being connected with a workpiece to be processed, and the negative electrode of the power supply is connected with the processing electrode.
In the technical scheme, a moving device drives a hollow spindle motor to move along the XYZ direction, so that a processing electrode can process a workpiece to be processed, the processing electrode is connected with the negative electrode of a power supply, the workpiece to be processed is connected with the positive electrode of the power supply, electrolyte is injected into an electrode body through a liquid adding pump and a spindle and is sprayed out from one end of a processing section, the wall surface of the workpiece to be processed is subjected to electrochemical dissolution under the electrochemical action, a processing gap with a non-circular cross section is formed between the outer wall surface of the processing section and the wall surface of the workpiece to be processed, the processing gap can be subjected to alternating change under the action of a rotating processing electrode to form a processing gap with periodic change, the electrolyte is sprayed from the bottom end of the processing section along the axial direction through the electrode body with a hollow structure, and then the electrolyte not only flows to a processed area with small flow resistance, and the sprayed electrolyte can bypass the end face of the machining electrode, enter an alternating machining gap formed by the outer wall surface of the machining section and the wall surface to be machined, and flow out along the axial direction. Under the condition that the pressure of an electrolyte inlet is constant, the processing gap with periodic change drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the axial flow velocity and the flow, so that the flow field at any point in the processing gap is changed along with axial pulsation, the axial flushing effect is enhanced by utilizing the characteristics of large turbulent energy and strong disturbance of the pulsating flow field, the axial mass transfer process of the processing gap when the anode of a workpiece is subjected to electrochemical dissolution is enhanced, and a processed product is rapidly discharged out of a processing area by utilizing the generated pulsating flow field, so that the milling process is efficiently and stably carried out.
Preferably, the main shaft is provided with a chuck for fixing the machining electrode, and the chuck is clamped and fixed with the clamping section of the machining electrode.
Preferably, the power supply is a pulse power supply or a direct current power supply.
The invention also provides an electrolytic milling processing method based on the electrolytic milling processing device, which comprises the following steps:
s1: fixing a workpiece to be processed below the hollow spindle motor and connecting the workpiece to be processed with the positive electrode of a power supply;
s2: controlling the moving device to enable the machining electrode to be close to the surface to be machined of the workpiece to be machined, and starting a liquid adding pump to convey electrolyte to the machining electrode through the main shaft; and switching on a power supply, carrying out electrochemical dissolution on the wall surface of the workpiece to be processed under the electrochemical action, and driving the processing electrode to rotate and move through the spindle motor to process the wall surface.
In the technical scheme, a processing electrode is connected with a negative electrode of a power supply, a workpiece to be processed is connected with a positive electrode of the power supply, electrolyte is injected into an electrode body through a liquid adding pump and a main shaft and is sprayed out from one end of a processing section, the wall surface to be processed is electrochemically dissolved under the action of electrochemistry, the outer wall surface of the processing section and the wall surface to be processed form processing gaps with different sizes during the electrolytic milling processing of the processing section with a non-circular cross section, the processing gaps can be subjected to alternating change under the action of a rotating processing electrode to form processing gaps with periodic change, the electrolyte is axially sprayed from the bottom end of the processing section through an electrode body with a hollow structure, then the electrolyte flows to a processed area with small liquid flow resistance, and the sprayed electrolyte can bypass the end surface of the processing electrode to enter the alternating processing gaps formed by the outer wall surface of the processing section and the wall surface to be processed, and flows out in the axial direction. Under the condition that the pressure of an electrolyte inlet is constant, the processing gap with periodic change drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the axial flow velocity and the flow, so that the flow field at any point in the processing gap is changed along with axial pulsation, the axial flushing effect is enhanced by utilizing the characteristics of large turbulent energy and strong disturbance of the pulsating flow field, the axial mass transfer process of the processing gap when the anode of a workpiece is subjected to electrochemical dissolution is enhanced, a processed product is rapidly discharged out of a processing area by utilizing the generated pulsating flow field, the efficient and stable milling process is ensured, and the electrolytic milling process of complex tracks such as complex circular tracks, complex linear tracks and the like is realized.
Preferably, in the step S2, the pressure of the electrolyte delivered by the charging pump is constant.
Preferably, in the step S2, the power supply is a dc power supply.
Compared with the prior art, the invention has the beneficial effects that: when the processing electrode is used for electrolytic milling, the processing electrode is connected with the negative pole of a power supply, a workpiece to be processed is connected with the positive pole of the power supply, external electrolyte is injected through the electrode body with a hollow structure, under the electrochemical action, the wall surface to be processed is electrochemically dissolved, when the processing section with the non-circular cross section is processed by electrolytic milling, the outer wall surface of the processing section and the wall surface to be processed form processing gaps with different sizes, the processing gaps can be subjected to alternating change under the action of a rotating processing electrode to form processing gaps with periodic change, electrolyte is axially sprayed from the bottom end of the processing section through an electrode body with a hollow structure, and then the electrolyte flows to a processed area with small flow resistance, and the sprayed electrolyte can bypass the end face of the machining electrode, enter an alternating machining gap formed by the outer wall surface of the machining section and the wall surface to be machined, and flow out along the axial direction. Under the condition that the pressure of an electrolyte inlet is constant, the processing gap with periodic change drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the axial flow velocity and the flow, so that the flow field at any point in the processing gap is changed along with axial pulsation, the axial flushing effect is enhanced by utilizing the characteristics of large turbulent energy and strong disturbance of the pulsating flow field, the axial mass transfer process of the processing gap when the anode of a workpiece is subjected to electrochemical dissolution is enhanced, and a processed product is rapidly discharged out of a processing area by utilizing the generated pulsating flow field, so that the milling process is efficiently and stably carried out.
Drawings
FIG. 1 is a schematic view of the overall construction of an electrolytic milling apparatus according to the present invention;
FIG. 2 is a schematic view showing a variation in machining gap between a machining section of the machining electrode and a workpiece to be machined according to the present invention;
FIG. 3 is a schematic view of the structure of the processing electrode of the present invention;
FIG. 4 is a cutaway schematic view of a section B-B of the clamping section of the machining electrode of FIG. 3;
FIG. 5 is a schematic cut-away view of a section C-C of the machining section of the machining electrode of FIG. 3;
FIG. 6 is an exemplary diagram of the electrochemical milling of a complex circular track by a processing electrode according to the present invention;
FIG. 7 is an exemplary diagram of the electrochemical milling of a complex linear track by a processing electrode according to the present invention.
Description of reference numerals:
1-electrode body, 11-clamping section, 12-processing section, 2-hollow spindle motor, 21-spindle, 22-chuck, 3-power supply, and 4-workpiece to be processed.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1
As shown in fig. 3 to 5, a machining electrode comprises an electrode body 1 with a hollow structure, wherein the electrode body 1 comprises a clamping section 11 and a machining section 12 which are connected with each other, and the cross section of the machining section 12 is a non-circular cross section.
In this embodiment, the processing electrode 1 is installed on the electrolytic milling device, the processing electrode 1 is connected to the negative electrode of the power supply 3, the workpiece 4 to be processed is connected to the positive electrode of the power supply 3, the external electrolyte is injected through the electrode body 1 with a hollow structure, the wall surface to be processed is electrochemically dissolved under the electrochemical action, the processing section 12 with a non-circular cross section forms a processing gap with different size with the wall surface to be processed when the electrolytic milling is performed on the processing section 12, the processing gap can be changed alternately under the action of the rotating processing electrode 1 to form a processing gap with periodic change, the electrolyte is axially sprayed from the bottom end of the processing section 12 through the electrode body 1 with a hollow structure, then the electrolyte not only flows to a processed area with small flow resistance, but also the sprayed electrolyte can enter the alternating processing gap formed by the outer wall surface of the processing section 12 and the wall surface to be processed by bypassing the end surface of the processing electrode 1, and flows out in the axial direction. Under the condition that the pressure of an electrolyte inlet is constant, the processing gap with periodic change drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the axial flow velocity and the flow, so that the flow field at any point in the processing gap is changed along with axial pulsation, the axial flushing effect is enhanced by utilizing the characteristics of large turbulent energy and strong disturbance of the pulsating flow field, the axial mass transfer process of the processing gap when the anode of a workpiece is subjected to electrochemical dissolution is enhanced, and a processed product is rapidly discharged out of a processing area by utilizing the generated pulsating flow field, so that the milling process is efficiently and stably carried out.
Wherein the cross-section of the processing section 12 is polygonal.
In addition, the cross-section of the processing section 12 is a regular polygon. In the embodiment, under the electrochemical action, the wall surface to be processed is electrochemically dissolved, the processing gap is alternately changed under the rotation action of the processing electrode 1 with the regular polygon section, under the condition that the pressure of an electrolyte inlet is constant, the periodically changed processing gap drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the periodic change, so that the flow field at any point in the processing gap uniformly changes in a pulsating manner along the axial direction, thereby strengthening the axial flushing effect by utilizing the characteristics of large turbulent energy and strong disturbance of the uniform pulsating flow field, further strengthening the axial mass transfer process of the processing gap when the anode electrochemical dissolution occurs to the workpiece, rapidly discharging the processed product out of the processing area by utilizing the generated uniform pulsating flow field, therefore, the milling process is more efficiently and stably carried out, the machining precision is improved, and meanwhile, the phenomena of short circuit and spark in the machining process are reduced.
Wherein the cross-section of the clamping section 11 is circular.
Example 2
As shown in fig. 1 to 5, an electrolytic milling device includes a moving device capable of moving along XYZ directions, a hollow spindle 21 motor 2 mounted on the moving device, a power supply 3, and the processing electrode 1, wherein the hollow spindle 21 motor 2 is mounted with the spindle 21, a hollow structure for adding electrolyte is provided in the spindle 21, the processing electrode 1 is mounted on the spindle 21 and is communicated with one end of the hollow structure, the other end of the hollow structure is connected with a liquid adding pump through a pipeline, the positive electrode of the power supply 3 is used for being connected with a workpiece 4 to be processed, and the negative electrode of the power supply 3 is connected with the processing electrode 1.
In this embodiment, the moving device may be a moving robot, or may be another device that can move in XYZ directions. The moving device drives the hollow main shaft 21 and the motor 2 can move along the XYZ direction, so that the processing electrode 1 can process the processing workpiece, the processing electrode 1 is connected with the negative pole of the power supply 3, the to-be-processed workpiece 4 is connected with the positive pole of the power supply 3, the electrolyte is injected into the electrode body 1 through the liquid adding pump and the main shaft 21 and is sprayed out from one end of the processing section 12, the wall surface to be processed is electrochemically dissolved under the electrochemical action, the outer wall surface of the processing section 12 and the wall surface to be processed form processing gaps with different sizes when the processing section 12 with the non-circular cross section is subjected to electrolytic milling processing, the processing gaps can be subjected to alternating change under the action of the rotating processing electrode 1 to form processing gaps with periodic change, the electrolyte is sprayed from the bottom end of the processing section 12 along the axial direction through the electrode body 1 with the hollow structure, and then the electrolyte not only flows to a processed area with small liquid flow resistance, the sprayed electrolyte can bypass the end face of the machining electrode 1, enter an alternating machining gap formed by the outer wall surface of the machining section 12 and the wall surface to be machined, and flow out in the axial direction. Under the condition that the pressure of an electrolyte inlet is constant, the processing gap with periodic change drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the axial flow velocity and the flow, so that the flow field at any point in the processing gap is changed along with axial pulsation, the axial flushing effect is enhanced by utilizing the characteristics of large turbulent energy and strong disturbance of the pulsating flow field, the axial mass transfer process of the processing gap when the anode of a workpiece is subjected to electrochemical dissolution is enhanced, and a processed product is rapidly discharged out of a processing area by utilizing the generated pulsating flow field, so that the milling process is efficiently and stably carried out.
The main shaft 21 is provided with a chuck 22 for fixing the machining electrode, and the chuck 22 is clamped and fixed with the clamping section 11 of the machining electrode.
Wherein, the power supply 3 is a pulse power supply or a direct current power supply.
Example 3
An electrolytic milling method based on the electrolytic milling device comprises the following steps:
s1: fixing a workpiece to be processed below the motor 2 of the hollow spindle 21 and connecting the workpiece to be processed with the positive pole of the power supply 3;
s2: controlling the moving device to enable the machining electrode to be close to the surface to be machined of the workpiece to be machined, and starting a liquid adding pump to convey electrolyte to the machining electrode through the main shaft 21; the power supply 3 is switched on, the wall surface of the workpiece 4 to be processed is electrochemically dissolved, and the spindle 21 motor controls the processing electrode to rotate and move and process the wall surface.
In this embodiment, the processing electrode is connected to the negative electrode of the power supply 3, the workpiece 4 to be processed is connected to the positive electrode of the power supply 3, the electrolyte is injected into the electrode body 1 through the charging pump and the main shaft 21 and is ejected from one end of the processing section 12, the wall surface to be processed is electrochemically dissolved under the electrochemical action, when the processing section 12 with a non-circular cross section is used for electrolytic milling, the outer wall surface of the processing section 12 and the wall surface to be processed form a processing gap with different sizes, the processing gap can be changed alternately under the action of the rotating processing electrode to form a processing gap with periodic change, the electrolyte is ejected axially from the bottom end of the processing section 12 through the electrode body 1 with a hollow structure, then the electrolyte not only flows to a processed area with small flow resistance, but also the ejected electrolyte can bypass the end face of the processing electrode and enter the alternating processing gap formed by the outer wall surface of the processing section 12 and the wall surface to be processed, and flows out in the axial direction. Under the condition that the pressure of an electrolyte inlet is constant, the processing gap with periodic change drives the axial flow velocity and the flow of the electrolyte in the alternating processing gap to periodically change along with the axial flow velocity and the flow, so that the flow field at any point in the processing gap is changed along with axial pulsation, the axial flushing effect is enhanced by utilizing the characteristics of large turbulent energy and strong disturbance of the pulsating flow field, the axial mass transfer process of the processing gap when the anode of a workpiece is subjected to electrochemical dissolution is enhanced, a processed product is rapidly discharged out of a processing area by utilizing the generated pulsating flow field, the efficient and stable milling process is ensured, and the electrolytic milling process of complex tracks such as complex circular tracks, complex linear tracks and the like is realized.
In step S2, the pressure at which the electrolyte is delivered by the charging pump is constant.
In step S2, the power supply 3 is a dc power supply.
As shown in fig. 6, an exemplary diagram of a complex circular track is electrolytically milled by using the milling method of the embodiment 3. As shown in fig. 7, an example of processing of electrolytically milling a complex straight track by the milling method of this embodiment 3 is shown.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A machining electrode, characterized by: the electrode comprises an electrode body (1) with a hollow interior, wherein the electrode body (1) comprises a clamping section (11) and a processing section (12) which are connected with each other, and the cross section of the processing section (12) is a non-circular cross section.
2. The processing electrode of claim 1, wherein: the cross section of the processing section (12) is polygonal.
3. The processing electrode of claim 2, wherein: the cross section of the processing section (12) is a regular polygon.
4. The processing electrode of claim 1, wherein: the cross section of the clamping section (11) is circular.
5. An electrolytic milling machining device is characterized in that: the machining electrode comprises a moving device capable of moving in the XYZ direction, a hollow spindle motor (2) installed on the moving device, a power supply (3) and the machining electrode (1) as claimed in any one of claims 1 to 4, wherein a spindle (21) is installed on the hollow spindle motor (2), a hollow structure for supplying electrolyte is arranged in the spindle (21), the machining electrode (1) is installed on the spindle (21) and communicated with one end of the hollow structure, the other end of the hollow structure is connected with a liquid feeding pump through a pipeline, the positive pole of the power supply (3) is used for being connected with a workpiece (4) to be machined, and the negative pole of the power supply (3) is connected with the machining electrode (1).
6. The electrolytic milling machining apparatus according to claim 5, characterized in that: the main shaft (21) is provided with a chuck (22) for fixing the machining electrode, and the chuck (22) is clamped and fixed with the clamping section (11) of the machining electrode.
7. The electrolytic milling machining apparatus according to claim 5, characterized in that: the power supply (3) is a pulse power supply or a direct current power supply.
8. The electrolytic milling machining method based on the electrolytic milling machining apparatus according to any one of claims 5 to 7, characterized by comprising the steps of:
s1: fixing a workpiece (4) to be processed below the hollow spindle motor (2) and connecting the workpiece with the positive electrode of the power supply (3);
s2: controlling the moving device to enable the machining electrode to be close to the surface to be machined of the workpiece (4) to be machined, and starting a liquid adding pump to convey electrolyte to the machining electrode through the main shaft (21); and (3) switching on a power supply, carrying out electrochemical dissolution on the wall surface of the workpiece (4) to be processed under the electrochemical action, and driving the processing electrode to rotate and move through the spindle motor (2) and processing the wall surface of the workpiece (4) to be processed.
9. The electrolytic milling machining method according to claim 8, characterized in that: in step S2, the pressure at which the electrolyte is delivered by the charging pump is constant.
10. The electrolytic milling machining method according to claim 8, characterized in that: in step S2, the power supply is a dc power supply.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734102A (en) * | 2022-05-10 | 2022-07-12 | 中国航空制造技术研究院 | Electrochemical machining device and electrochemical machining method |
| CN114769763A (en) * | 2022-04-01 | 2022-07-22 | 中国航空制造技术研究院 | Side milling type electrolytic milling electrode and electrolytic milling processing milling head |
| CN115582588A (en) * | 2022-10-17 | 2023-01-10 | 广东工业大学 | Tube electrode and method and device for electrolytically machining deep small holes |
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| CN115582588A (en) * | 2022-10-17 | 2023-01-10 | 广东工业大学 | Tube electrode and method and device for electrolytically machining deep small holes |
| CN115582588B (en) * | 2022-10-17 | 2024-04-09 | 广东工业大学 | Pipe electrode and method and device for electrolytic machining of deep small holes |
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