CN111250805A - Flying type electrolytic milling leveling method for rough metal surface - Google Patents
Flying type electrolytic milling leveling method for rough metal surface Download PDFInfo
- Publication number
- CN111250805A CN111250805A CN202010199627.XA CN202010199627A CN111250805A CN 111250805 A CN111250805 A CN 111250805A CN 202010199627 A CN202010199627 A CN 202010199627A CN 111250805 A CN111250805 A CN 111250805A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- machining
- speed
- highest point
- gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention relates to a flying type electrolytic milling leveling method for a rough metal surface, and belongs to the field of electrolytic milling processing. The invention adopts a hollow tube electrode as a tool cathode, the bottom surface of the hollow tube electrode is horizontal, a metal workpiece is manufactured by an additive manufacturing technology, the surface is rough and uneven, and the workpiece and electrolyte are selected to have obvious passivation behavior in the electrolytic machining process. During electrolytic machining, the lowest point on the surface to be machined of the metal workpiece is always in a passivation state, electrochemical anodic dissolution can occur at the highest point, but the height after dissolution is not lower than that of the lowest point, and therefore the surface flatness of the workpiece is improved. The method provided by the invention can improve the surface flatness of the workpiece under the condition of not changing the size of the original part, reduces the machining allowance required by flattening, can shorten the flattening period, can also reduce the manufacturing size of a blank piece during additive manufacturing, is favorable for reducing the cost and shortens the machining period.
Description
Technical Field
The invention relates to a flying type electrolytic milling leveling method for a rough metal surface, and belongs to the field of electrolytic milling processing.
Background
The additive manufacturing is a manufacturing method through material accumulation from bottom to top, compared with the traditional manufacturing technology, the method does not need traditional cutters, clamps and the like, parts with complex shapes can be quickly and precisely manufactured on one device, the processing procedures are greatly reduced, the processing period is shortened, the method is not limited by the structure and the materials of the parts, and the method is gradually widely applied to the fields of aviation, aerospace, medical treatment, weapons and the like. For example, GE corporation has implemented Leap-X engine fuel swirler fabrication using additive manufacturing techniques, and the army united states has implemented the investment casting of components such as XM30 artillery guide brackets using wax molds made using additive manufacturing techniques. However, due to the limitation of the additive manufacturing technology, the surface of the manufactured part is rough and uneven, and it is difficult to meet the requirement of actual processing precision, and a subsequent material reduction treatment is often required.
When the traditional machining is used as a post-treatment means, the machining precision is high, the surface quality is good, but when parts made of materials difficult to machine, such as high-temperature alloy, titanium alloy and the like, are faced, because the materials have the characteristics of high strength, high hardness, low heat conductivity coefficient and the like, the cutting force of a cutter is large, the temperature of a cutting area is high, the cutter is seriously abraded, a workpiece is machined and hardened in the subsequent material reduction process, particularly when thin-wall parts are machined, the problem that the parts are easy to deform exists, and the machining cost and the period of the post-treatment of the traditional machining are increased. Therefore, a new efficient and low-cost subsequent finishing means is sought, which is of great significance for promoting further application of the additive manufacturing technology.
The electrolytic machining is a process method for removing metal materials by utilizing the principle of electrochemical anode dissolution and obtaining parts with certain dimensional accuracy and surface roughness. During electrolytic machining, the cathode of the tool is connected with the negative pole of the power supply, the workpiece is connected with the positive pole of the power supply, and the electrolyte flows through the machining gap between the cathode of the tool and the workpiece at high speed, so that a conductive circuit is formed. For passive metal or passive electrolyte, firstly a passivation layer is generated on the surface of a workpiece during electrolytic machining, at the moment, the workpiece material is not dissolved, but under the continuous action of an electric field, when the electric quantity obtained on the surface of the workpiece reaches a specific value, the passivation layer is broken so as to generate electrochemical anode dissolution, and the surface material of the workpiece is continuously removed in an ionic state. Different from the traditional mechanical processing, the electrolytic processing is non-contact processing, is not limited by physical properties such as material hardness, strength and the like, has no mechanical cutting force in the processing process, has no loss of a tool cathode, has no extra processing residual stress and heat affected zone, and is relatively suitable for processing metal materials which are difficult to process.
The flying type electrolytic milling technology is one of electrolytic machining technologies, a pipe electrode with a simple shape is often used as a tool cathode, the tool cathode is always positioned above a surface to be machined of a workpiece during machining, a numerical control system is used for controlling the feeding motion of the tool cathode and the feeding motion of the workpiece to jointly form a contour generating line, and the flying type electrolytic milling technology has the characteristics of high machining flexibility, high machining efficiency, low cutter cost, high machining stability and the like. However, with the improvement of the machining precision of the part machined by the additive manufacturing, the allowance of the part to be machined is gradually reduced, if a small machining gap or a slow machining speed is adopted, the machining depth is low and easily exceeds the machining allowance, and if a large machining gap or a fast machining speed is adopted, the machining depth is shallow or even the part is not machined, so that how to control the machining gap and the machining speed makes the flying type electrolytic milling become an effective means for the subsequent machining of the additive manufacturing, and the method plays an important role in the additive manufacturing process and the flying type electrolytic milling process.
Disclosure of Invention
The invention aims to provide a method for selecting a flying type electrolytic milling machining gap and a machining speed, so that a plane with high flatness can be obtained under the condition of removing small machining allowance when a metal workpiece manufactured by an additive manufacturing process is machined.
A flying type electrolytic milling leveling method for rough metal surfaces is provided, wherein the workpiece surfaces are rough and uneven. The key point of the method provided by the invention is that the distances from the cathode of the tool to the points with different heights on the surface of the workpiece are different, so that the current density distribution on the surface of the workpiece is different by regulating and controlling the processing gap and the feeding speed, the crushing time of the passivation layers at the points with different heights is different, and the final dissolution time is different, so that the surface of the workpiece is rough and uneven.
The method is characterized by comprising the following steps:
step one, determining the range of a machining gap
Step 1.1, aiming at the highest point of the surface of a workpiece, establishing a three-dimensional electric field simulation model by taking a processing gap between a cathode of a tool and the highest point of the surface of the workpiece as a change parameter;
step 1.2, obtaining the current density of the surface of the workpiece, calculating the electric quantity obtained in the machining process, recording the minimum value of the machining gap when the electric quantity obtained on the surface of the workpiece positioned below the center of the cathode of the tool is maximum as the minimum machining gap, and recording 10 times of the distance value between the highest point and the lowest point of the surface of the workpiece as the maximum machining gap so as to determine the range of the machining gap. During the flying type electrolytic milling machining by adopting the hollow rod-shaped tube electrode, the part of the tool cathode actually participating in the whole conductive loop is the inner wall of the tool cathode, so that the workpiece surface below the inner wall of the tool cathode can be in a high current density area to realize the removal of materials. When the processing gap between the cathode of the tool and the workpiece is too large, the difference between the distances from the highest point and the lowest point on the surface of the workpiece to the cathode of the tool is not obvious, and the feeding speed is difficult to control to achieve the purpose of the invention.
The tool cathode is a tube electrode with a central through hole, and the bottom surface of the tool cathode is horizontal; the workpiece surface with the highest point and the lowest point of the workpiece surface are both the workpiece surface below the central through hole of the cathode of the tool. The electrolyte supply of a smaller machining gap can be realized by adopting the inner spray liquid supply, so that the electrolyte is sprayed into the machining gap from the central through hole; the round hole is adopted, because the inner wall of the cathode of the tool participates in the conductive loop during the flying type electrolytic milling processing, the round hole can ensure that the processed groove has symmetry, and the forming precision after processing is easy to control; the method of the invention is characterized in that the distance from different points on the surface of the workpiece to the cathode of the tool is different, and the cathode of the tool with a flat bottom surface is adopted, so that the machining gap from the cathode of the tool to the surface of the workpiece is easy to calculate and control. During the flying type electrolytic milling process, the surface of the workpiece below the inner wall of the cathode of the tool is in a high current density area for electrolysis, so that the highest point and the lowest point of the surface of the workpiece in the method provided by the invention are both high current density areas, namely the surface of the workpiece below the central through hole of the cathode of the tool.
Step two, determining the optimal processing speed:
and 2.1, selecting a plurality of machining gap values with equal difference distribution in the machining gap range determined in the step one. When the influence of a certain parameter is researched, a plurality of numerical values of the equal difference distribution are selected as independent variables, and the method is a common means for experimental research in the field.
And 2.2, aiming at a selected certain machining gap, reestablishing a three-dimensional electric field model aiming at the highest point of the surface of the workpiece, and calculating the machining speed when the corrosion depth of the highest point of the surface of the workpiece is equal to the distance between the highest point of the surface of the workpiece and the lowest point of the surface of the workpiece according to the Faraday law, and recording the machining speed as a first machining speed. In the method provided by the invention, the lowest point of the surface of the workpiece is not corroded, and only the highest point is corroded, so that the flatness of the surface of the workpiece is improved, the corrosion depth of the highest point is not more than the distance difference between the highest point and the lowest point of the surface of the workpiece, and the corrosion depth is larger as the machining speed is slower, so that the minimum value of the machining speed for the highest point is determined.
And 2.3, establishing a three-dimensional electric field model aiming at the lowest point (4) on the surface of the workpiece by adopting the machining gap in the step 2.2, and calculating the maximum value of the machining speed which ensures that the passivation layer at the lowest point (4) on the surface of the workpiece cannot be broken all the time, and recording the maximum value as a second machining speed. If the lowest point of the surface of the workpiece is not corroded, the passivation layer on the lowest point of the surface of the workpiece is not broken in the whole processing process, the slower the speed is, the more electric quantity is obtained, the more easily the passivation layer is broken, and the minimum value of the processing speed aiming at the lowest point can be determined.
And 2.4, comparing the first processing speed with the second processing speed, wherein the larger value is the optimal processing speed. Only when the processing speed is not less than the larger value, the highest point corrosion depth is not more than the distance between the highest point and the lowest point, and the passivation layer on the surface of the lowest point can not be broken. However, as the machining speed increases, the machining depth decreases again, and the flatness of the surface of the machined workpiece is reduced, so that the critical value is adopted as the machining speed to realize maximum flatness.
And 2.5, aiming at other selected machining gaps, determining the optimal machining speed corresponding to each machining gap according to the steps 2.2-2.4. Steps 2.2-2.4 are only to determine the optimal speed in a certain machining gap, and also to calculate the optimal speed in other different gaps.
And step three, selecting the maximum speed value which can be reached by the electrolytic machining machine tool for testing from the calculated optimal machining speeds, and recording the maximum speed value and the corresponding machining gap as the test machining speed and the test machining gap. According to the processing speed of the machine tool, the achievable optimal speed values are selected, and all the optimal speed values can achieve the purpose of leveling, but as the speed is reduced, the time for the surface of the processed workpiece to be subjected to secondary electrolysis is prolonged, the surface finish of the workpiece is reduced, and therefore the maximum optimal speed which can be achieved by the machine tool is selected as the final testing processing speed.
Preparing flying type electrolytic milling test processing, wherein the selection of the electrolyte and the workpiece material ensures that passivation behavior exists in the electrolytic processing process; the cathode of the tool is connected with the cathode of the power supply, the workpiece is connected with the anode of the power supply, and the distance between the cathode of the tool and the highest point of the surface of the workpiece is equal to the processing gap selected in the step three. One of the prerequisites that the passivation layer at the lowest point of the surface of the workpiece is not broken in the whole machining process is the generation of the passivation layer, so the selection of the electrolyte and the workpiece must be carried out in the electrolytic machining process, which is the premise that the invention can realize.
Step five, setting the feeding speed of the tool cathode to be equal to the processing speed selected in the step three, controlling the electrolyte to be sprayed into the processing gap from the central through hole of the tool cathode, and switching on a power switch;
controlling the cathode of the tool to move along the feeding direction, wherein the feeding direction is parallel to the surface of the workpiece, under the selected test machining gap and the test machining speed, the highest point of the surface of the workpiece is subjected to electrochemical anodic dissolution, and the lowest point of the surface of the workpiece is not subjected to electrochemical anodic dissolution, so that the surface flatness of the workpiece is improved;
the flying type electrolytic milling leveling method for the rough metal surface is characterized by comprising the following steps of: the distance between the highest point and the lowest point on the surface of the workpiece is not less than 0.1 mm. When the distance between the highest point and the lowest point on the surface of the workpiece is too small, if the machining gap between the highest point and the cathode of the tool on the surface of the workpiece is too large, the difference value between the gap between the highest point and the cathode of the tool and the gap between the lowest point and the cathode of the tool is small, the machining speed is difficult to control so that the passivation layer at the highest point is broken and the passivation layer at the lowest point is not broken, if the machining gap between the highest point and the cathode of the tool on the surface of the workpiece is too small, the highest point of the current density on the surface of the workpiece is not positioned below the center of the cathode of the tool, grooves with high and low undulations on the bottom surface are.
The invention has the following advantages:
(1) the method provided by the invention can ensure that the lowest point of the surface of the workpiece is not subjected to material removal, and the height after the highest point is corroded is not lower than that of the lowest point, so that a plane with higher flatness is obtained. Therefore, in the additive manufacturing process of the blank, a smaller finishing allowance can be reserved completely, and finally a plane with a higher flatness can be obtained, so that the material loss in the additive manufacturing process can be reduced, and the manufacturing period can be shortened.
(2) By adopting the method provided by the invention, the removed material in the leveling process is less, the thickness is only the height difference between the highest point and the lowest point in the initial process, the material removal amount in the leveling process is greatly reduced, and the period and the cost of the leveling processing process are shortened.
(3) The initial machining gap and the tool cathode feeding speed in the method provided by the invention can be calculated by simulation to obtain range values, and each parameter does not need to be tested one by one, so that the test amount can be greatly reduced, and the test cost is reduced.
(4) The method provided by the invention adopts the hollow tube electrode with simple shape, the cutter is simple in design and manufacture and low in cost, and the flying type electrolytic milling method is adopted, so that the stability of the processing process is high, and the service life of the cutter is long.
Drawings
FIG. 1 is a schematic view of a flying type electrolytic milling leveling method for rough metal surfaces according to the present invention;
FIG. 2 is a schematic diagram of a three-dimensional electric field simulation model for the highest point of the surface of a workpiece;
FIG. 3 is a graph showing the variation of the electric quantity obtained from the surface of a workpiece with different machining gaps along with coordinates;
FIG. 4 is a graph of first and second calculated machining speeds for different machining gaps;
the number designations in the figures are: 1. a tool cathode; 2. a workpiece; 3. the highest point of the workpiece; 4. the lowest point of the workpiece; 5. an electrolyte; 6. a direction of feed; 7. a power source.
Detailed Description
The present invention is described in further detail below with reference to the specific drawings.
As shown in figure 1, the flight type electrolytic milling leveling method of the rough surface of the metal, wherein the surface of the workpiece 2 is rough and uneven;
the method is characterized by comprising the following steps:
step one, determining the range of a machining gap
Step 1.1, aiming at the highest point 3 of the surface of a workpiece, establishing a three-dimensional electric field simulation model by taking a machining gap between a tool cathode 1 and the highest point 3 of the surface of the workpiece as a change parameter;
step 1.2, obtaining the current density of the surface of a workpiece, calculating the electric quantity obtained in the machining process, recording the minimum value of a machining gap when the electric quantity obtained on the surface of the workpiece positioned below the center of a cathode 1 of the tool is the maximum as a minimum machining gap, and recording 10 times of the distance value between the highest point 3 and the lowest point 4 of the surface of the workpiece as a maximum machining gap so as to determine the range of the machining gap;
the tool cathode 1 is a tube electrode having a central through hole and a bottom surface thereof is horizontal; the workpiece surfaces of the highest point 3 and the lowest point 4 of the workpiece surface are the surfaces of the workpieces 2 below the central through hole of the tool cathode 1;
step two, determining the optimal processing speed
Step 2.1, selecting a plurality of machining gap values with equal difference distribution in the machining gap range determined in the step one;
2.2, aiming at a selected certain machining gap, reestablishing a three-dimensional electric field model aiming at the highest point 3 of the surface of the workpiece, and calculating the machining speed when the corrosion depth of the highest point 3 of the surface of the workpiece is equal to the distance between the corrosion depth and the lowest point 4 of the surface of the workpiece according to the Faraday law, and recording the machining speed as a first machining speed;
step 2.3, establishing a three-dimensional electric field model aiming at the lowest point 4 of the surface of the workpiece by adopting the processing gap in the step 2.2, and calculating the maximum value of the processing speed which ensures that the passivation layer at the lowest point 4 of the surface of the workpiece cannot be broken all the time and recording the maximum value as a second processing speed;
step 2.4, comparing the first processing speed with the second processing speed, wherein the larger value is the optimal processing speed;
step 2.5, aiming at other selected machining gaps, determining the optimal machining speed corresponding to each machining gap according to the steps 2.2-2.4;
selecting the maximum speed value which can be reached by the electrolytic machining machine tool for testing from the calculated optimal machining speeds, and recording the maximum speed value and the corresponding machining clearance as a test machining speed and a test machining clearance;
preparing flying type electrolytic milling test processing, wherein the selection of the electrolyte 5 and the material of the workpiece 2 ensures that passivation behavior exists in the electrolytic processing process; the tool cathode 1 is connected with the negative electrode of the power supply 7, the workpiece 2 is connected with the positive electrode of the power supply 7, and the distance between the tool cathode 1 and the highest point 3 of the surface of the workpiece is equal to the processing gap selected in the step three;
step five, setting the feeding speed of the tool cathode 1 to be equal to the processing speed selected in the step three, controlling the electrolyte 5 to be sprayed into the processing gap from the central through hole of the tool cathode 1, and switching on a power supply 7;
controlling the tool cathode 1 to move along a feeding direction 6, wherein the feeding direction is parallel to the surface of the workpiece, under the selected test machining gap and the test machining speed, the highest point 3 of the surface of the workpiece is subjected to electrochemical anode dissolution, and the lowest point 4 of the surface of the workpiece is not subjected to electrochemical anode dissolution, so that the surface flatness of the workpiece 2 is improved;
the feasibility of steps one to three was analyzed by simulation software COMSOL analysis, as shown in fig. 2-4. The cathode of the rod-shaped tool has an outer diameter of 1.2mm and an inner diameter of 0.8 mm. The workpiece is made of TC4 by additive manufacturing, the distance between the highest point and the lowest point is 0.15mm, the electrolyte is 20% of sodium chloride, the temperature of the electrolyte is 30 ℃, the processing voltage is 40V, and the processing speed and the processing clearance are analyzed.
Step one, determining the range of a machining gap
Step 1.1, as shown in fig. 2, a three-dimensional electric field model for the highest point of the surface of a workpiece is established, the heights of all points of the surface of the workpiece 3 are the same as the highest point, the distance between the workpiece 3 and the bottom surface of a tool cathode 1 is a machining gap, the tool cathode 1 moves along a feeding direction 6, the direction of a coordinate system during modeling is shown in the figure, the origin of coordinates is located on the surface of the workpiece below the center of the tool cathode, and the length and the width of the workpiece.
Step 1.2 workpiece surface electric quantity distribution along Y direction, which can be based on simulated current density by formula
In the formula, qaIs the amount of charge obtained and j is the current density. As shown in fig. 3, the electric charge distribution is given at machining gaps of 0.1mm,0.2mm,0.3mm,0.4mm,0.5mm, and it can be seen that when the machining gap is larger than 0.1mm, the electric charge is most obtained at the surface of the workpiece under the center of the tool cathode 1, and therefore, the machining gap is considered to be 0.2 to 1.5 mm.
Step two, determining the optimal processing speed
Step 2.1 considers the optimal processing speed under different processing gaps, takes 0.2mm as a difference value, and considers the optimal speed when the processing gaps are 0.2mm,0.4mm,0.6mm,0.8mm,1mm.1.2mm and 1.4 mm.
Step 2.2 according to Faraday's law, one can deduce
Wherein v is a feeding speed, L is a tool position coordinate when the passivation layer is broken, j is a current density, P (j) is a fitted electric quantity function required by breaking the passivation layer when the current density is j, h is a distance between a highest point and a lowest point, and omega is a material volume electrochemical equivalent. An approximate solution to the first machining speed was obtained using COMSOL software post-processing according to the above formula, the results of which are shown in fig. 4.
Step 2.3, a three-dimensional electric field model for the lowest point is established, which is similar to the highest point model except that the machining gap is equal to the distance between the highest point and the cathode of the tool plus the distance between the highest point and the lowest point according to a formula
An approximate solution for the second machining speed was obtained using COMSOL software post-processing, the results of which are shown in fig. 4.
Step 2.4 as can be seen from fig. 4, the second processing speed is significantly greater than the first processing speed, and therefore the second processing speed is selected as the optimum processing speed.
Step 2.5 the first and second machining speeds for the other machining gaps are also shown in fig. 4, and the optimum machining speed is the second machining speed.
And step three, selecting a test machining speed according to the used electrolytic machining tool, wherein for example, if the maximum machining speed of the laboratory machine tool is 72mm/min, the selected test machining speed is 44mm/min, and the machining gap is 1mm.
The flying type electrolytic milling leveling method for the tubular electrode with the rough metal surface provided by the invention expands the application range of the electrolytic milling technology, but the above description cannot be understood as the limitation of the invention. It should be noted that several improvements can be made without departing from the inventive concept, which shall all fall within the protection of the present patent.
Claims (2)
1. A flight type electrolytic milling leveling method for a rough metal surface is provided, wherein the surface of a workpiece (2) is rough and uneven;
the method is characterized by comprising the following steps:
step one, determining the range of a machining gap
Step 1.1, aiming at the highest point (3) of the surface of the workpiece, establishing a three-dimensional electric field simulation model by taking a machining gap between a tool cathode (1) and the highest point (3) of the surface of the workpiece as a variation parameter;
step 1.2, obtaining the current density of the surface of a workpiece, calculating the electric quantity obtained in the machining process, recording the minimum value of a machining gap when the electric quantity obtained on the surface of the workpiece below the center of a cathode (1) of the tool is the maximum as the minimum machining gap, and recording 10 times of the distance value between the highest point (3) and the lowest point (4) of the surface of the workpiece as the maximum machining gap so as to determine the range of the machining gap;
the tool cathode (1) is a tube electrode having a central through hole, and the bottom surface thereof is horizontal; the workpiece surfaces of the highest point (3) and the lowest point (4) of the workpiece surface are the surfaces of the workpieces (2) below the central through hole of the tool cathode (1);
step two, determining the optimal processing speed
Step 2.1, selecting a plurality of machining gap values with equal difference distribution in the machining gap range determined in the step one;
2.2, aiming at a selected certain machining gap, re-establishing a three-dimensional electric field model aiming at the highest point (3) of the surface of the workpiece, and calculating the machining speed when the corrosion depth of the highest point (3) of the surface of the workpiece is equal to the distance between the highest point and the lowest point (4) of the surface of the workpiece according to the Faraday law, and recording the machining speed as a first machining speed;
step 2.3, establishing a three-dimensional electric field model aiming at the lowest point (4) on the surface of the workpiece by adopting the processing gap in the step 2.2, and calculating the maximum value of the processing speed which ensures that the passivation layer at the lowest point (4) on the surface of the workpiece cannot be broken all the time and recording the maximum value as a second processing speed;
step 2.4, comparing the first processing speed with the second processing speed, wherein the larger value is the optimal processing speed;
step 2.5, aiming at other selected machining gaps, determining the optimal machining speed corresponding to each machining gap according to the steps 2.2-2.4;
selecting the maximum speed value which can be reached by the electrolytic machining machine tool for testing from the calculated optimal machining speeds, and recording the maximum speed value and the corresponding machining clearance as a test machining speed and a test machining clearance;
preparing flying type electrolytic milling test processing, wherein the selection of the electrolyte (5) and the material of the workpiece (2) ensures that passivation behavior exists in the electrolytic processing process; the tool cathode (1) is connected with the negative electrode of the power supply (7), the workpiece (2) is connected with the positive electrode of the power supply (7), and the distance between the tool cathode (1) and the highest point (3) of the surface of the workpiece is equal to the processing gap selected in the step three;
step five, setting the feeding speed of the tool cathode (1) to be equal to the processing speed selected in the step three, controlling the electrolyte (5) to be sprayed into the processing gap from the central through hole of the tool cathode (1), and switching on a power supply (7) switch;
and sixthly, controlling the tool cathode (1) to move along a feeding direction (6), wherein the feeding direction is parallel to the surface of the workpiece, under the selected test machining gap and the test machining speed, electrochemical anodic dissolution is carried out on the highest point (3) of the surface of the workpiece, electrochemical anodic dissolution is not carried out on the lowest point (4) of the surface of the workpiece, and therefore the surface flatness of the workpiece (2) is improved.
2. The flying type electrolytic milling leveling method for the rough metal surface according to claim 1, characterized in that: the distance between the highest point (3) and the lowest point (4) of the surface of the workpiece is not less than 0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199627.XA CN111250805A (en) | 2020-03-20 | 2020-03-20 | Flying type electrolytic milling leveling method for rough metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199627.XA CN111250805A (en) | 2020-03-20 | 2020-03-20 | Flying type electrolytic milling leveling method for rough metal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111250805A true CN111250805A (en) | 2020-06-09 |
Family
ID=70947817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010199627.XA Pending CN111250805A (en) | 2020-03-20 | 2020-03-20 | Flying type electrolytic milling leveling method for rough metal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111250805A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1192917A1 (en) * | 1984-02-20 | 1985-11-23 | Воронежский Политехнический Институт | Method of dimensional electrochemical working |
| CN1312744A (en) * | 1998-04-06 | 2001-09-12 | 皇家菲利浦电子有限公司 | Method and apparatus for electrochemical machining of workpiece |
| CN1585835A (en) * | 2001-11-13 | 2005-02-23 | Acm研究公司 | Electropolishing assembly and methods for electropolishing conductive layers |
| CN1754644A (en) * | 2004-09-27 | 2006-04-05 | 周锦进 | Pulse electrochemical polishing processing method for gear teeth face |
| CN101524777A (en) * | 2009-02-27 | 2009-09-09 | 西安交通大学 | Numerical control electrolytic polishing method of metal die and device thereof |
| CN108188511A (en) * | 2018-01-02 | 2018-06-22 | 南京航空航天大学 | It is electrolysed the efficiently coarse-fine process integration processing method of milling |
-
2020
- 2020-03-20 CN CN202010199627.XA patent/CN111250805A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1192917A1 (en) * | 1984-02-20 | 1985-11-23 | Воронежский Политехнический Институт | Method of dimensional electrochemical working |
| CN1312744A (en) * | 1998-04-06 | 2001-09-12 | 皇家菲利浦电子有限公司 | Method and apparatus for electrochemical machining of workpiece |
| CN1585835A (en) * | 2001-11-13 | 2005-02-23 | Acm研究公司 | Electropolishing assembly and methods for electropolishing conductive layers |
| CN1754644A (en) * | 2004-09-27 | 2006-04-05 | 周锦进 | Pulse electrochemical polishing processing method for gear teeth face |
| CN101524777A (en) * | 2009-02-27 | 2009-09-09 | 西安交通大学 | Numerical control electrolytic polishing method of metal die and device thereof |
| CN108188511A (en) * | 2018-01-02 | 2018-06-22 | 南京航空航天大学 | It is electrolysed the efficiently coarse-fine process integration processing method of milling |
Non-Patent Citations (1)
| Title |
|---|
| 叶而康等: "GH4169电解磨削加工试验研究", 《机械制造与自动化》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zeng et al. | A study of micro-EDM and micro-ECM combined milling for 3D metallic micro-structures | |
| Torres et al. | Analysis of the influence of EDM parameters on surface finish, material removal rate, and electrode wear of an INCONEL 600 alloy | |
| Rajurkar et al. | New developments in electro-chemical machining | |
| CN108188511B (en) | Electrolytic milling and grinding efficient rough and finish machining integrated machining method | |
| Rahman et al. | Optimization of machining parameters on tool wear rate of Ti-6Al-4V through EDM using copper tungsten electrode: A statistical approach | |
| CN101693313B (en) | Electric spark and electrolysis combined milling machining method of micro three-dimensional structure | |
| CN106513883B (en) | A kind of blade profile precision ECM shaped electrode and processing method | |
| CN106270839B (en) | More material electric discharging machining electrodes and its processing method | |
| CN111940858B (en) | Tool electrode for forming boss structure on surface of revolving body and method thereof | |
| CN109909567B (en) | High-efficiency precise electrolytic mechanical combined milling method and device | |
| Skoczypiec | Discussion of ultrashort voltage pulses electrochemical micromachining: a review | |
| Singh et al. | A CRITICAL REVIEW OF WIRE ELECTRIC DISCHARGE MACHINING. | |
| CN105014169A (en) | Method for electrolytically machining array holes of group electrodes | |
| Rahman et al. | Optimization of machining parameters on surface roughness in EDM of Ti-6Al-4V using response surface method | |
| Tianyu et al. | Electrochemical discharge machining for fabricating holes in conductive materials: A review | |
| CN106180923A (en) | A kind of micro three-dimensional structure electric spark milling process method | |
| Khan | Role of heat transfer on process characteristics during electrical discharge machining | |
| Ming et al. | Wear resistance of copper EDM tool electrode electroformed from copper sulfate baths and pyrophosphate baths | |
| CN111250805A (en) | Flying type electrolytic milling leveling method for rough metal surface | |
| CN111136355B (en) | Electrolytic machining method for laminated disc-shaped electrolytic machining tool electrode | |
| CN115255527A (en) | Composite fan blade, metal edge-wrapping inner surface machining tool and machining method | |
| CN201483105U (en) | Electrode for processing hard alloy die with irregular surface by electric spark | |
| Abbas et al. | The Influence of Angled Electrodes on Various Characteristics in EDM Process-Review Article | |
| Zhou et al. | Effect of different parameters on processing efficiency in electrochemical machining | |
| CN108031934A (en) | A kind of electrolysis correction method of TC4 titanium alloys turbo blade repair layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200609 |
|
| WD01 | Invention patent application deemed withdrawn after publication |