CN115502495A - Sleeve-shaped electrolytic machining device with main flushing and auxiliary flushing liquid supply - Google Patents

Abstract

The invention discloses a sleeve-shaped electrolytic processing device with combined main and auxiliary flushing for liquid supply, which includes a workpiece fixture, a cathode assembly, a positioning block and a liquid supply assembly. The component defines a liquid supply channel communicating with the first profiled hole, and a first profiled opening for supporting the formed blade, the first profiled opening is opposite to the first profiled hole in the first direction, and has There is a gap for electrolyte flow between the shaped blade and the side wall of the first profiling opening. The liquid supply assembly includes a main liquid supply seat and an auxiliary liquid supply seat. The main liquid supply seat is used to provide electrolyte to the liquid supply channel, and the auxiliary liquid supply seat The liquid supply seat is used for supplying electrolyte to the first shaped opening, and the electrolyte flows out from the first shaped hole. The sleeve-shaped electrolytic processing device provided by the present invention adopts a combined main and auxiliary liquid supply mode, which can effectively avoid electrolyte backflow, prevent flocs in the backflow electrolyte from being deposited on the surface of the formed blade, and improve the surface quality of the blade.

Description

Sleeve-shaped electrolytic machining device with combined main and auxiliary flushing and liquid supply

technical field

The invention relates to the technical field of electrolysis, in particular to a sleeve-shaped electrolytic processing device with combined flushing and liquid supply of the main and auxiliary.

Background technique

Electrolytic machining is a processing method based on the principle of electrochemical anodic dissolution to achieve material removal, which belongs to a special processing technology. During the processing, the cathode of the profiling tool is fed to the anode of the workpiece under the control of the numerical control system, and the anode material of the workpiece is gradually dissolved to realize the machining and shaping of the workpiece. This method has the characteristics of no cutting stress, no loss of tool cathode, and high material removal rate. It has been widely used in aerospace, weapon, automobile and other industries, especially in the batch manufacturing of aeroengine blades.

Sleeve-shaped electrolytic machining can realize the full contour molding of the blade basin, blade back, inlet edge, and exhaust edge in one feed, with high processing efficiency and good molding consistency. It has been widely used in integral impellers, diffusers, The manufacturing process of blade parts such as blisks. However, the sleeve-shaped electrolytic processing device in the related art is prone to electrolyte backflow during processing, resulting in the deposition of electrolytic flocs on the surface of the formed blade, resulting in a decrease in the quality of the blade surface.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the embodiment of the present invention proposes a sleeve-shaped electrolytic machining device in which the main and auxiliary parts are combined to flush and supply liquid.

The embodiment of the present invention provides a sleeve-shaped electrolytic processing device with a combination of primary and secondary flushing and liquid supply, including a workpiece clamp, which is used to clamp a workpiece; Relatively movable, the cathode assembly includes a cathode sheet, the cathode sheet is provided with a first profiling hole, the cathode assembly defines a liquid supply channel communicated with the first profiling hole, and is used for holding The first profiling opening supporting the shaped blade, the first profiling opening is opposite to the first profiling hole in the first direction, and the formed blade and the first profiling opening are There is a gap between the side walls for electrolyte flow; a liquid supply assembly, the liquid supply assembly includes a main liquid supply seat and a secondary liquid supply seat, the main liquid supply seat is used to provide electrolyte to the liquid supply channel, The auxiliary liquid supply seat is used to supply electrolyte to the first shaped opening, and the electrolyte flows out from the first shaped hole.

The sleeve-shaped electrolytic processing device provided by the embodiment of the present invention adopts the main and auxiliary joint liquid supply mode, which can effectively avoid the backflow of the electrolyte and prevent the floc in the backflow electrolyte from depositing on the surface of the formed blade , which in turn helps to improve the surface quality of the blade, which is of great significance to the realization of precise and high-quality electrolytic machining of the blade.

In some embodiments, the cathode assembly includes a cathode seat, a liquid-leading insulator, and the cathode piece, the cathode piece is connected to the cathode seat, and the liquid-leading insulator is sandwiched in the first direction Between the cathode sheet and the cathode seat, the liquid-leading insulator is provided with the first profiling opening.

In some embodiments, at least one first liquid supply through hole is opened on the liquid leading insulator, and a second liquid supply through hole corresponding to the first liquid supply is opened on the cathode base. The through hole, the second liquid supply through hole communicates with the diversion groove of the main liquid supply seat.

In some embodiments, the sleeve-shaped electrolytic processing device further includes a lead base, the lead base is located on the side of the cathode assembly away from the workpiece holder and abuts against it, and a first opening is opened on the lead base. Three liquid supply through holes, one end of the third liquid supply through hole communicates with the diversion groove of the main liquid supply seat, and the other end communicates with the liquid supply channel, and the lead base is used to connect to the negative pole of the power supply.

In some embodiments, the main liquid supply seat is located on a side of the lead base far away from the cathode assembly, and the auxiliary liquid supply base is located on a side of the main liquid supply seat away from the lead base. On the side, the main liquid supply seat is provided with a first communication channel, and the lead base is provided with a second communication channel, and the first communication channel and the second communication channel connect and communicate with the auxiliary liquid supply seat The diversion groove is connected with the first contoured opening.

In some embodiments, it also includes a blade protection section, the blade protection section is located on a side of the first profiled opening away from the first profiled hole, and the blade protection section is provided with a second profiled opening , the second profiled opening extends along the first direction and connects with the first profiled opening, and the blade protection section extends into the first communication channel and the second communication channel. In the auxiliary liquid supply seat, the diversion groove of the auxiliary liquid supply seat communicates with the second profiling opening.

In some embodiments, the auxiliary liquid supply seat includes a liquid supply support and an extended liquid supply section, the blade protection section includes a first section and an extended section, the liquid supply support is connected to the machine tool, and the extended liquid supply section is connected to the The side of the liquid supply bracket close to the main liquid supply seat is connected, the extension section is connected to the end of the first section away from the cathode assembly, at least a part of the extension section is located in the extended liquid supply within the paragraph.

In some embodiments, the width of the gap between the shaped blade and the side wall of the first contoured opening is 0.2mm-2mm.

In some embodiments, the sleeve-shaped electrolytic machining device further includes a positioning block, the positioning block is fixed on the side of the cathode assembly facing the workpiece holder, and the positioning block is provided with a The positioning hole opposite the hole.

In some embodiments, the sleeve-shaped electrolytic machining device further includes a blade protection section, the blade protection section is located on the side of the first profile opening away from the first profile hole, and the blade protection section is provided with A second shaped opening, the second shaped opening extends along the first direction and connects with the first shaped opening.

Description of drawings

Fig. 1 is a schematic structural diagram of a sleeve-shaped electrolytic machining device provided by an embodiment of the present invention.

Fig. 2 is an exploded view of the sleeve-shaped electrolytic machining device provided by the embodiment of the present invention.

Fig. 3 is a cross-sectional view of a sleeve-shaped electrolytic machining device provided by an embodiment of the present invention.

FIG. 4 is a partially enlarged view of FIG. 3 .

Reference signs:

Sleeve-shaped electrolytic processing device 100, workpiece fixture 1, first fixing clip 11, second fixing clip 12, workpiece 2, formed blade 21, cathode assembly 3, cathode sheet 31, first profiling hole 311, cathode seat 32, The second liquid supply hole 321, the third communication channel 322, the liquid insulator 33, the first copy opening 331, the first liquid supply hole 332, the liquid supply channel 34, the gap 35, the positioning block 4, the positioning hole 41 , blade protection section 5, second profiling opening 50, first section 51, extension section 52, main liquid supply seat 61, main flow groove 611, first communication channel 612, main liquid supply interface 613, auxiliary liquid supply seat 62, Auxiliary diversion tank 621 , liquid supply bracket 622 , extended liquid supply pipe 623 , auxiliary liquid supply interface 624 , lead base 7 , third liquid supply through hole 71 , second communication channel 72 , and machine tool 8 .

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The sleeve-shaped electrolytic processing device 100 for primary and secondary combined flushing liquid supply provided by the embodiment of the present invention is described below with reference to FIGS. 1-4 . The sleeve-type electrolytic processing device 100 includes a workpiece holder 1 , a cathode assembly 3 and a liquid supply assembly. The workpiece holder 1 is used to hold a workpiece 2 . The cathode assembly 3 and the workpiece holder 1 are relatively movable in the first direction. The cathode assembly 3 includes a cathode sheet 31, and the cathode sheet 31 is provided with a first profiling hole 311. 311 communicates with the liquid supply channel 34 , and the first profiled opening 331 for supporting the formed blade 21 , the first profiled opening 331 is opposite to the first profiled hole 311 in the first direction.

The liquid supply assembly is not only used to provide electrolyte to the liquid supply channel 34, but also to provide electrolyte to the first profiling opening 331. Shaped hole 311 flows out.

As shown in Figures 1-4, the liquid supply assembly includes a main liquid supply seat 61 and a secondary liquid supply seat 62, the main liquid supply seat 61 is used to provide electrolyte to the liquid supply channel 34, and the electrolyte flows forward along the liquid supply channel 34 (that is, flow in the direction of the first profiling hole 311 ), and flow out from the first profiling hole 331 . The auxiliary liquid supply seat 62 is used to provide electrolyte solution to the first profiling opening 331, there is a gap 35 for electrolyte flow between the formed blade 21 and the side wall surface of the first profiling opening 331, the first profiling opening 331 The electrolyte solution flows forward along the gap 35 (that is, flows in the direction of the first profiling hole 311). In this process, the electrolyte solution can wash the surface of the formed blade 21 to prevent the electrolyte solution The reflow creates secondary contact with the formed blade 21, thereby avoiding the deposition of flocs in the reflowed electrolyte on the surface of the formed blade 21, which helps to improve the surface quality of the formed blade 21 and improve the processing yield of the blade.

The sleeve-shaped electrolytic processing device provided by the embodiment of the present invention adopts the main and auxiliary joint liquid supply mode, which can effectively avoid the backflow of the electrolyte and prevent the floc in the backflow electrolyte from being deposited on the surface of the formed blade, thereby helping to lift the blade Surface quality is of great significance to the realization of precise and high-quality electrolytic machining of blades.

The structural features of the sleeve-shaped electrolytic machining device 100 in a specific embodiment provided by the present invention will be further described below with reference to FIGS. 1-4 .

As shown in FIG. 1 , a sleeve-type electrolytic machining device 100 includes a workpiece holder 1 and a cathode assembly 2 facing each other in a first direction. In this embodiment, the workpiece holder 1 is fixedly installed, and the cathode assembly 2 approaches or moves away from the workpiece holder 1 in a first direction. When processing the workpiece 2, the cathode assembly 2 gradually approaches the workpiece holder 1 along the first direction, so that the workpiece 2 passes through and extends into the first profiling hole 311, and the cathode assembly 2 continues to feed, under the corrosion of the electrolyte , the workpiece 2 as an anode material is gradually dissolved and formed into a shaped blade 21 , and the feed continues, and the shaped blade 21 extends into the first profiling opening 331 .

As shown in FIG. 1 , the workpiece holder 1 includes a first fixing clip 11 and a second fixing clip 12, and the first fixing clip 11 and the second fixing member 12 clamp and fix the workpiece 2. It can be understood that the length direction of the workpiece 2 Extending along the first direction, when the workpiece 2 is clamped, the end of the unprocessed blank is opposite to the positioning hole 41 in the first direction, so as to accurately penetrate into the positioning hole 41 for electrolytic machining.

Specifically, as shown in Figures 1 and 2, the cathode assembly 3 includes a cathode seat 32, a liquid-leading insulator 33, and a cathode piece 31, the cathode piece 31 is connected to the cathode seat 32, and the liquid-leading insulator 33 is clamped in the first direction. Located between the cathode piece 31 and the cathode seat 32 , the liquid-leading insulator 33 is provided with a first profiling opening 331 . In the embodiment shown in Fig. 1, the cathode seat 32 is a frame structure, the cathode sheet 31 is installed on the front end of the cathode seat 32, and the liquid-leading insulator 33 is positioned in the frame structure of the cathode seat 32, and its front end is connected to the cathode sheet 31. The rear end is closely fitted, and the rear end is closely fitted with the cathode holder 32.

The liquid leading insulator 33 and the cathode seat 32 jointly define a liquid supply channel 34 . Specifically, as shown in Fig. 3 and Fig. 4, at least one first liquid supply through hole 332 is opened on the liquid leading insulator 33, and the cathode seat 32 is opened with one-to-one communication with the first liquid supply through hole 332. The second liquid supply through hole 321 and the first liquid supply through hole 332 connect with the corresponding second liquid supply through hole 321 and communicate with each other to form the liquid supply channel 34 of the cathode assembly 3 . The second liquid supply through hole 321 is in communication with the liquid supply assembly, the liquid supply assembly provides electrolyte to the second liquid supply through hole 321, and the electrolyte flows forward along the second liquid supply through hole 321 into the first liquid supply through hole 332, and flow from the front end of the first liquid supply through hole 332 to the first profiled hole 311 of the cathode sheet 31, and flow out from the gap between the first profiled hole 311 and the workpiece 2 into the processing area to participate in the electrolysis reaction, and finally Flows from the edge of the processing area. As shown in FIG. 2 and FIG. 3 , the cathode assembly 2 in the embodiment of the present invention defines two liquid supply channels 34 located on both sides of the first profiling opening 331 . Of course, in other embodiments, the number of liquid supply channels 34 can be other.

As shown in FIG. 3 , both the liquid supply channel 34 and the first shaped opening 331 extend along the first direction.

As shown in FIG. 4 , the liquid-leading insulating member 33 is provided with a groove on a side close to the cathode sheet 31 , and the first liquid supply through hole 332 and the first profiling opening 331 are both provided in the groove. The effect of the groove makes a certain interval between the first liquid supply through hole 332 and the front end of the first profiling opening 331 and the cathode sheet 31, so that the electrolyte flows, as shown in Figure 4, from the first liquid supply through hole The electrolyte solution flowing out from the front end of the hole 332 is blocked by the rear end surface of the cathode sheet 31 and turns to the first profiling hole 331 for fragrance retention in the groove. As shown in Figure 4, the electrolyte solution of the main circuit (the electrolyte solution in the liquid supply channel 34) and the electrolyte solution of the auxiliary circuit (the electrolyte solution in the gap 35) merge in the groove in front of the liquid insulator 33 from the first profiling Hole 311 flows out and participates in the electrolysis reaction. The electrolyte in the main circuit is a high-voltage electrolyte.

As shown in FIG. 2 , the top of the main liquid supply seat 61 has a main liquid supply interface 613 , and a main flow groove 611 communicating with the main liquid supply interface 613 is arranged inside. The top of the auxiliary liquid supply seat 62 has an auxiliary liquid supply interface 624 , and an auxiliary flow guide groove 621 communicating with the auxiliary liquid supply interface 624 is arranged inside.

As shown in FIGS. 1-3 , the sleeve-shaped electrolytic processing device 100 also includes a lead base 7 , which is located on the side of the cathode assembly 3 away from the workpiece holder 1 and abuts against it. The cathode assembly 4, the lead seat 7, the main liquid supply seat 61, and the auxiliary liquid supply seat 62 are sequentially arranged and connected. The lead base 7 is used to connect the negative pole of the power supply. Since the lead base 7 is located between the main liquid supply base 61 and the cathode assembly 3, in order to communicate with the main liquid supply base 61 and the liquid supply channel 34, as shown in Figure 3, a third liquid supply through hole is opened on the lead base 7 71 , the rear end of the third liquid supply hole 71 communicates with the main flow groove 611 of the main liquid supply seat 61 , and the front end communicates with the liquid supply channel 34 , and the third liquid supply through hole 71 communicates with the liquid supply channel 34 in a one-to-one correspondence.

Since the main liquid supply seat 61 is located between the auxiliary liquid supply seat 62 and the cathode assembly 3, in order to communicate with the auxiliary liquid supply seat 62 and the first profiling opening 331, as shown in Figure 2, the main liquid supply seat 61 is provided with a first communication Channel 612, the rear end of the first communication channel 612 communicates with the auxiliary flow guide groove 621 of the auxiliary liquid supply seat 62, and the lead base 7 is provided with a second communication channel 72 that is opposite to and communicates with the first communication channel 612. On the cathode seat 32 A third communication channel 332 is provided opposite to and communicated with the second communication channel 72 , and the third communication channel 332 is opposite to and communicated with the first profiling opening 331 of the liquid-leading insulator 33 . In the first direction, the auxiliary diversion groove 621, the first communication channel 612, the second communication channel 72, the third communication channel 332, and the first profiling opening 331 communicate in sequence, so the electrolyte in the auxiliary diversion groove 621 is Introduced into the first contoured opening 331.

Further, in the embodiment shown in FIGS. 1-4 , the sleeve-shaped electrolytic machining device 100 also includes a blade protection section 5, which is located at a side of the first profiling opening 331 away from the first profiling hole 311. On the side, the blade protection section 5 is provided with a second profiled opening 50 , which extends along the first direction and connects with and communicates with the first profiled opening 331 . As shown in FIG. 3 , the front end of the blade protection section 5 passes through the cathode seat 32 and abuts against the rear end of the liquid-leading insulator 33 , so that the second embossed opening 50 and the first embossed opening 331 meet and communicate. During the processing, the formed blade 21 passes through the first profiling opening 331 and the second profiling opening 50 and is supported in order to ensure that the front end of the formed blade 21 is supported in the profiling opening, so the blade protection section The setting of 5 is conducive to further pushing up the rigidity and vibration of the blade, and avoiding the deformation of the formed blade 2 .

The front end of the blade protection section 5 passes through the third connection channel 332 of the cathode seat 32 and abuts against the rear end of the liquid insulator 33, and the rear end of the blade protection section 5 passes through the second connection channel 72 and the main channel 72 on the lead base 7 in turn. The first communication channel 612 on the liquid supply seat 61 extends into the auxiliary flow guide groove 621 of the auxiliary liquid supply seat 62 , so that the auxiliary flow guide groove 621 communicates with the second profiling opening 50 on the blade protection section 5 . Moreover, the outer peripheral surface of the blade protection section 5 is closely matched with the first communication channel 612 , the second communication channel 72 , and the third communication channel 332 to make the structure stable. Therefore, in the embodiment shown in FIG. 3 , the electrolyte in the sub-guiding groove 621 enters the second profiling opening 50 from the rear end of the blade protection section 5, and flows forward along the second profiling opening 50, During this process, the electrolyte passes through the first communication channel 612 , the second communication channel 72 and the third communication channel 332 in sequence, and then the electrolyte enters the first profiling opening 331 and continues to flow forward.

In some embodiments where the blade protection section 5 is not provided behind the first profiling opening 331, the electrolyte passes through the first communication channel 612, the second communication channel 72, the third communication channel 72, and the The communication channel 332 enters into the first contoured opening 331 .

It can be understood that, as shown in FIG. 4 , if the front end of the formed blade 21 formed by the workpiece 2 during the processing extends into the second profiling opening 50 in the blade protection section 5, the formed blade 21 and the first There is a gap between the side walls of the two profiling openings 50, and the flow of electrolyte in the gap plays the role of scouring the surface of the formed blade 21, preventing the settlement of flocs on the surface of the formed blade 21 and affecting the quality of the blade.

Preferably, the width of the gap between the shaped blade 21 and the side wall of the first profiling opening 331 is 0.2mm-2mm.

Preferably, the width of the gap between the shaped blade 21 and the side wall of the second profiling opening 50 is 0.2mm-2mm.

The gap between the profiling opening (the first profiling opening 331 and the second profiling opening 50) and the formed vane 21 is the flow channel for the electrolyte in the auxiliary circuit, and too small gap width (for example, less than 0.2 mm) will cause the electrolyte in the auxiliary circuit to The flow resistance is significantly increased, the flow rate is reduced, and the scouring effect of the auxiliary circuit electrolyte on the surface of the formed blade 21 is reduced, which is not conducive to reducing the deposition of electrolytic flocculent products on the formed blade 21 . Relatively, an excessively large gap width (for example, greater than 2 mm) will lead to a significant decrease in the flow resistance of the electrolyte in the auxiliary circuit and a substantial increase in the flow rate. At this time, the flow rate of the electrolyte in the auxiliary circuit may be greater than the flow rate of the main electrolyte, and the form of the flow field will change. It is not conducive to the progress of the electrolytic machining process.

In addition, it should be noted that both the liquid-inducing insulating part 33 and the blade protection section 5 are made of insulating materials, and after the workpiece 1 is formed at the first profiling hole 311 of the cathode sheet 31, the formed blade 21 will enter and pass through in sequence. Through the first profiling opening 331 of the liquid-inducing insulator 33 and the second profiling opening 50 of the blade protection section 5, although the electrolyte flows through the first profiling opening 331 and the second profiling opening 50, due to the insulating material It has a shielding effect on the electric field, so the part of the formed blade 21 does not constitute an electrochemical reaction condition, and there will be no stray corrosion. That is to say, the purpose of the auxiliary electrolyte is to wash the part of the formed blade 21 to protect the blade. surface effect without generating stray corrosion affecting surface quality.

Further, as shown in Figure 1, the auxiliary liquid supply seat 62 includes a liquid supply bracket 622 and an expanded liquid supply section 623, the blade protection section 5 includes the first section 51 and an expanded section 52, the liquid supply bracket 622 is connected with the machine tool 8, and the expanded supply section The liquid section 623 is connected to the front end of the liquid supply support 622 (the side close to the main liquid supply seat 61), the extension section 52 is connected to the rear end of the first section 51 (the end away from the cathode assembly 3), and at least a part of the extension section 52 is located at Expand the liquid supply section 623. The expanded liquid supply section 623 and the expanded section 52 are used to extend the inner space, and for blades of different lengths, the number of the expanded liquid supply section 623 and the expanded section 52 can be appropriately increased or decreased.

In this embodiment, the liquid supply bracket 622 and the extended liquid supply section 623, as well as the first section 51 and the extended section 52 all adopt a female-female interface design.

Further, the sleeve-shaped electrolytic machining device also includes a positioning block 4 . The positioning block 4 is fixed on the side of the cathode assembly 3 facing the workpiece holder 1. The positioning block 4 is provided with a positioning hole 41 opposite to the first profiling hole 311. The workpiece 2 gradually passes through the positioning hole 41 during the feeding process. and the first profiling hole 311 enters the first profiling opening 331 . During this process, the positioning hole 41 plays a role of fixing the processed part of the workpiece 2 .

By setting the positioning block 4 on the cathode assembly, the positioning hole 41 on the positioning block 4 can fix the processing part of the workpiece 2, which improves the chattering problem commonly existing in the cantilever type workpiece processing method in the related art, and improves the processing of the workpiece Rigidity enhances the stability of the workpiece during electrolytic machining. In addition, the setting of the first profiling hole 311 and the first profiling opening 331 on the cathode assembly 3 can support the part of the formed blade 21, help to improve the rigidity and stiffness of the formed blade 21, and avoid the formed Deformation of blade 21 after machining.

Therefore, the sleeve-shaped electrolytic machining device 100 provided by the embodiment of the present invention also has the characteristics of strong machining stability, and is especially suitable for the electrolytic machining of large-aspect-ratio straight-grained blades with large size and thin thickness, so as to realize the precision and high precision of the blades. Quality electrolytic machining.

The process of performing electrolytic machining on the workpiece 1 by using the sleeve-shaped electrolytic machining device 100 provided in the embodiment of the present invention includes the following steps:

Step 1: sequentially install the cathode assembly 3, the lead seat 7, the main liquid supply seat 61, the auxiliary liquid supply seat 62, the auxiliary liquid supply seat 62 is connected with the machine tool 8, and the workpiece fixture 1 and the workpiece 2 are installed;

Step 2: Adjust the cathode assembly 3 to the processing station, and record the position parameters;

Step 3: Roll back the cathode assembly 3, install the positioning block 4, and adjust the cathode assembly 3 to the processing station according to the recorded position parameters;

Step 4: Connect the main electrolyte pipe to the main liquid supply interface 612 of the main liquid supply seat 6, connect the auxiliary electrolyte pipe to the auxiliary liquid supply interface 624 of the auxiliary liquid supply seat 62, and connect the cathode of the power supply to the lead seat 7, The anode of the power supply is on the workpiece fixture 1;

Step 5: Start the power supply and electrolyte circulation system;

Step 6: Start the running program of the CNC machine tool, the machine tool 8 feeds along the long side of the workpiece 2, the workpiece 2 passes through the positioning hole 41 of the positioning block 4 to support and fix the processing side, and an end surface is formed between the cathode sheet 31 and the workpiece 2 gap, the electrolytic reaction starts, and under the electrolytic corrosion of the cathode, the anode material of the workpiece 2 is gradually dissolved and removed, and the blades are gradually formed; when the feeding is continued, the formed blades 21 pass through the first profiling hole 311 of the cathode sheet 31 successively, leading to the liquid The first profiling opening 331 of the insulator 33, the second profiling opening 50 of the blade protection section 5, until the processing of the blade is completed;

Step 7: After processing, cut off the power, close the electrolyte circulation system, remove the workpiece and clean it.

The electrolytic processing method adopts the main and auxiliary joint liquid supply mode. The high-voltage electrolyte of the main road flows in from the main liquid supply seat 6, passes through the liquid supply through holes on the electric lead seat 7, the cathode seat 32 and the liquid lead insulator 33, and is fed by the cathode The first profiled opening 311 on the sheet 31 enters the processing area to participate in the electrolysis reaction, and finally flows out from the edge of the processing area; the auxiliary electrolyte flows in from the auxiliary liquid supply seat 62, enters the second profiled opening 50 of the blade protection section 5, and drains the liquid. The first profiling opening 331 on the insulator 33 flows into the high-voltage electrolyte of the main circuit from the groove on the insulator 33 of the liquid introduction, and participates in the electrolysis reaction with the high-voltage electrolyte of the main circuit and flows out.

The sleeve-shaped electrolytic machining device and electrolytic machining method provided by the embodiments of the present invention can improve the machining rigidity and forming surface quality of the straight-grained blade with large aspect ratio, which is beneficial to improve the flutter problem of the blade during electrolytic machining, and solve the problem of electrolytic flocculent products The problem of deposition on the surface of the formed blade is of great significance to realize the precise and high-quality electrolytic machining of large aspect ratio ruled blades.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, Unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

As used herein, the terms "one embodiment," "some embodiments," "example," "specific examples," or "some examples" mean specific features, structures, materials, or features described in connection with the embodiment or example. A feature is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the above-mentioned embodiments have been shown and described, it can be understood that the above-mentioned embodiments are exemplary, and should not be construed as limitations on the present invention. Changes, modifications, substitutions and variations made by those skilled in the art to the above-mentioned embodiments All within the protection scope of the present invention.

Claims (10)

1. The utility model provides a major-minor jointly erodees cover shape electrolytic machining device that supplies liquid which characterized in that includes:

a work holder for holding a work;

the cathode assembly and the workpiece clamp are arranged in a relatively movable mode in a first direction, the cathode assembly comprises a cathode sheet, a first profiling hole is formed in the cathode sheet, the cathode assembly limits a liquid supply channel communicated with the first profiling hole and a first profiling opening used for supporting a formed blade, the first profiling opening is opposite to the first profiling hole in the first direction, and a gap for flowing electrolyte is formed between the formed blade and the side wall surface of the first profiling opening;

and the liquid supply assembly comprises a main liquid supply seat and an auxiliary liquid supply seat, the main liquid supply seat is used for supplying electrolyte to the liquid supply channel, the auxiliary liquid supply seat is used for supplying electrolyte to the first profiling opening, and the electrolyte flows out of the first profiling hole.

2. The sleeve-shaped electrolytic machining device with main and auxiliary combined flushing and liquid supply functions as claimed in claim 1, wherein the cathode assembly comprises a cathode base, a liquid guiding insulator and the cathode sheet, the cathode sheet is connected with the cathode base, the liquid guiding insulator is clamped between the cathode sheet and the cathode base in the first direction, and the liquid guiding insulator is provided with the first profiling opening.

3. The main-auxiliary combined flushing and liquid supplying sleeve type electrolytic machining device according to claim 2, wherein the liquid guiding insulation piece is provided with at least one first liquid supplying through hole, the cathode base is provided with second liquid supplying through holes which are communicated with the first liquid supplying through holes in a one-to-one correspondence manner, and the second liquid supplying through holes are communicated with the diversion trench of the main liquid supplying base.

4. The sleeve-shaped electrolytic machining device for main and auxiliary combined flushing and liquid supply of any one of claims 1-3, further comprising an electricity guiding seat, wherein the electricity guiding seat is located on one side of the cathode assembly, which is far away from the workpiece fixture, and is abutted against the cathode assembly, a third liquid supply through hole is formed in the electricity guiding seat, one end of the third liquid supply through hole is communicated with the flow guide groove of the main liquid supply seat, the other end of the third liquid supply through hole is communicated with the liquid supply channel, and the electricity guiding seat is used for connecting a power supply cathode.

5. The sleeve-shaped electrolytic machining device with the main and auxiliary combined flushing and liquid supply functions as claimed in claim 4, wherein the main liquid supply seat is located on one side of the electricity guiding seat away from the cathode assembly, the auxiliary liquid supply seat is located on one side of the main liquid supply seat away from the electricity guiding seat, the main liquid supply seat is provided with a first communicating channel, the electricity guiding seat is provided with a second communicating channel, and the first communicating channel and the second communicating channel are connected and communicated with the flow guide groove of the auxiliary liquid supply seat and the first profiling opening.

6. The sleeve-shaped electrolytic machining device with the main and auxiliary combined flushing and liquid supply functions as claimed in claim 5, further comprising a blade protection section, wherein the blade protection section is located on one side, away from the first profiling hole, of the first profiling opening, the blade protection section is provided with a second profiling opening, the second profiling opening extends along the first direction and is connected with the first profiling opening, the blade protection section penetrates through the first communicating channel and the second communicating channel and extends into the auxiliary liquid supply seat, and a diversion groove of the auxiliary liquid supply seat is communicated with the second profiling opening.

7. The sleeve-type electrolytic machining device with the main and auxiliary combined flushing and liquid supply function as claimed in claim 6, wherein the auxiliary liquid supply seat comprises a liquid supply support and an expanded liquid supply section, the blade protection section comprises a first section and an expanded section, the liquid supply support is connected with a machine tool, the expanded liquid supply section is connected with one side, close to the main liquid supply seat, of the liquid supply support, the expanded section is connected with one end, far away from the cathode assembly, of the first section, and at least one part of the expanded section is located in the expanded liquid supply section.

8. The sleeve-type electrolytic machining device for supplying liquid by combined flushing and washing of main and auxiliary parts as claimed in any one of claims 1 to 3 and 5 to 7, wherein the width of the gap between the formed blade and the side wall surface of the first profile opening is 0.2mm to 2mm.

9. The sleeve-shaped electrolytic machining device with the main flushing part and the auxiliary flushing part for liquid supply according to claim 1, further comprising a positioning block, wherein the positioning block is fixed on one side, facing the workpiece clamp, of the cathode assembly, and a positioning hole opposite to the first profiling hole is formed in the positioning block.

10. The sleeve-shaped electrolytic machining device with the main flushing function and the auxiliary flushing function as claimed in claim 1 or 9, further comprising a blade protection section, wherein the blade protection section is located on one side, away from the first profiling hole, of the first profiling opening, and is provided with a second profiling opening, and the second profiling opening extends along the first direction and is connected with the first profiling opening.

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