Electroplating device for low-pressure turbine blade of aero-engine

Abstract

The invention relates to the technical field of electroplating equipment, in particular to an electroplating device for a low-pressure turbine blade of an aero-engine, which comprises an electroplating bath for containing a plating metal cation solution; two ends of the sliding rod are respectively inserted into sliding rod mounting holes in the middle positions of the upper parts of the left side plate and the right side plate of the electroplating bath in a sliding manner; the driving mechanism is used for driving the sliding rod to reciprocate in the left-right direction; and the plurality of hanging assemblies are mounted on the sliding rod and are used for hanging blades to be electroplated. When the blade is electroplated, the hanging assembly reciprocates along with the sliding rod, so that the clamped blade is driven to move back and forth in the electroplating bath, the effect of stirring bath liquid is achieved, and the uniformity of a surface coating can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electroplating equipment, and particularly relates to an electroplating device for low-pressure turbine blades of aeroengines. Background Art

[0002] Turbine blades are key components of aeroengines. They operate under harsh conditions of high temperature, high pressure, and high speed, with high processing difficulty, high precision requirements, and high costs. To meet the corrosion and wear resistance characteristics of turbine blades, surface treatment and processing are required during the production process, involving electroplating processes and devices. A scientific electroplating device can improve the processing quality of the blades, reduce the unqualified rate and rework rate of products, and save a large amount of labor and material costs.

[0003] After a static electroplating device is used for a period of time, metal cations are unevenly distributed in the solution, and stirring operation cannot be maintained during the electrification process; moreover, turbine blades are usually designed as twisted variable cross-section curved surfaces, with complex shapes of asymmetric structures. In existing electroplating devices, the workpieces are arranged horizontally and parallel to the anode plate. The distribution of electric field lines is relatively dense in the area facing and close to the anode plate, while the distribution of electric field lines is relatively sparse in the area facing away from the anode plate. The states of each part facing the anode plate are different, resulting in uneven thickness of the surface coating, making it difficult to meet the assembly standards and performance requirements. Summary of the Invention

[0004] The main object of the present invention is to propose an electroplating device for low-pressure turbine blades of aeroengines, aiming to solve the above technical problems.

[0005] To achieve the above object, the present invention proposes an electroplating device for low-pressure turbine blades of aeroengines, including: an electroplating tank for containing a solution of coating metal cations; a sliding rod, the two ends of which are respectively slidably inserted into the sliding rod mounting holes at the upper middle positions of the left and right side plates of the electroplating tank; a driving mechanism for driving the sliding rod to perform reciprocating motion in the left and right directions; and a plurality of hanging components mounted on the sliding rod for hanging the blades to be electroplated.

[0006] Preferably, the driving mechanism includes a motor, a driving disk, and a driven disk; the motor is installed on the outer wall of the left side plate of the electroplating tank; the driving disk is installed on the output shaft of the motor; the driven disk is installed on the left end head of the sliding rod, and the bottom surface of the driven disk is slidably matched with the top surface of the driving disk; a strip-shaped chute is formed in the driven disk; the long direction of the strip-shaped chute is perpendicular to the axis of the sliding rod; a convex column is provided at an eccentric position on the top surface of the driving disk, and the convex column is slidably inserted into the strip-shaped chute.

[0007] Preferably, each of the suspension components includes a cross beam, a suspension rod, and a chuck; the middle part of the cross beam is installed on the sliding rod, and the longitudinal direction of the cross beam is perpendicular to the sliding rod; the suspension rods are respectively installed at both ends of the cross beam; the chuck is arranged at the lower end of the suspension rod, and a mortise groove is formed in the chuck for cooperating with the tenon of the blade.

[0008] Preferably, a rack is arranged between the left and right side plates of the electroplating tank; the suspension rod is rotatably installed at the end of the cross beam; a gear is arranged at the top end of the suspension rod, and the gear meshes with the rack.

[0009] Preferably, the end of the cross beam is provided as a bearing seat; a thrust bearing is arranged between the bearing seat and the gear; the top end of the suspension rod passes through the bearing seat and the thrust bearing from bottom to top and is fixedly connected with the gear.

[0010] Preferably, the number of the racks is two; one rack is arranged at an interval from the front panel of the electroplating tank to form a first socket, and the other rack is arranged at an interval from the rear panel of the electroplating tank to form a second socket; an anode plate is inserted at the first socket and the second socket.

[0011] Preferably, two jacks are arranged in the middle of the cross beam; a plurality of pairs of mounting columns are arranged at intervals along the axial direction of the sliding rod; the two columns of each pair of mounting columns are located on both sides of the sliding rod; the cross beam is placed on the sliding rod, and the two columns of each pair of mounting columns are respectively inserted into the two jacks of the cross beam.

[0012] Preferably, a seat body is welded on the sliding rod, and the mounting column is welded on the seat body.

[0013] Preferably, a baffle is arranged at one end of the mortise groove.

[0014] Preferably, a counterbore is arranged on the bearing seat; an annular groove is arranged on the lower end surface of the gear; the seat ring of the thrust bearing is installed in the counterbore of the bearing seat; the shaft ring of the thrust bearing is installed in the annular groove on the lower end surface of the gear.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0016] (1) In the electroplating device provided by the present invention, since a sliding rod is arranged and a driving mechanism is used to drive the sliding rod to reciprocate in the left and right directions, when electroplating the blade, the suspension component reciprocates along with the sliding rod, thereby driving the clamped blade to move back and forth in the electroplating tank, playing a role in stirring the bath liquid, and further improving the uniformity of the surface coating.

[0017] (2) In the electroplating device provided by the present invention, due to the provision of a gear-rack mechanism and a sliding rod that reciprocates, when electroplating the blade, the blade rotates around the axis of the suspension rod in the electroplating solution and reciprocates in the left-right direction of the electroplating tank, making the coating thickness on the blade surface uniform, and improving the electroplating efficiency and product quality.

[0018] (3) In the present invention, since the cross beam on the suspension assembly is placed on the sliding rod and fixed by inserting two columns on the mounting post into two jacks on the cross beam, it plays a role in preventing the cross beam from rotating around the sliding rod. The mating structure between the cross beam and the sliding rod forms a detachable structure, enabling the suspension assembly to be easily detached from the sliding rod. The suspension assembly can be flexibly installed according to the number of blades, avoiding the immersion of the empty clamping suspension rod in the electroplating solution, and achieving a good effect of protecting the fixture and extending its service life.

[0019] (4) In the present invention, the drive mechanism adopts a motor, a drive disk, a driven disk, and a convex post, jointly forming a cam-linkage mechanism, which can ensure that the sliding rod can stably reciprocate in the left-right direction. The structure is simple and convenient for processing and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 Schematic diagram of the three-dimensional structure of the electroplating device provided by the present invention;

[0022] Figure 2 Exploded view of the electroplating device provided by the present invention;

[0023] Figure 3 Schematic diagram of the structure of the suspension assembly and the sliding rod of the electroplating device provided by the present invention;

[0024] Figure 4 For Figure 3 Cross-sectional view along A-A in

[0025] Figure 5 Schematic diagram of the component structure formed by the suspension rod and the chuck in the present invention.

[0026] Description of the attached drawing reference numerals: 1. Rack; 2. Gear; 3. Thrust bearing; 4. Driven disc; 4a. Strip-shaped chute; 5. Driving mechanism; 6. Driving disc; 7. Convex column; 8. Motor; 9. Cross beam; 9a. Bearing seat; 9b. Jack; 9c. Counterbore; 10. Suspension assembly; 11. Seat body; 12. Sliding rod; 13. Mounting post; 14. Suspension rod; 15. Chuck; 15a. Mortise groove; 15b. Baffle; 16. Electroplating tank; 16a. Slide rod mounting hole; 16b. First socket; 16c. Second socket; 17. Blade; 17a. Tenon head. Detailed implementation manner

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] As shown in the accompanying drawings, an electroplating device for a low-pressure turbine blade of an aeroengine includes:

[0031] An electroplating tank 16 for containing a coating metal cation solution;

[0032] A sliding rod 12, the two ends of which are respectively slidably inserted into the slide rod mounting holes 16a in the middle positions of the upper parts of the left and right side plates of the electroplating tank 16;

[0033] A driving mechanism 5 for driving the sliding rod 12 to perform a reciprocating motion in the left and right directions;

[0034] A plurality of suspension components 10 are installed on the sliding rod 12 for suspending the blades 17 to be electroplated.

[0035] In this embodiment, the driving mechanism 5 includes a motor 8, a driving disk 6 and a driven disk 4; the motor 8 is installed on the outer wall of the left side plate of the electroplating tank 16; the driving disk 6 is installed on the output shaft of the motor 8; the driven disk 4 is installed on the left end head of the sliding rod 12, and the driven disk 4 is placed on the top surface of the driving disk 6, and the bottom surface of the driven disk 4 is in sliding fit with the top surface of the driving disk 6; a strip-shaped chute 4a is provided on the driven disk 4; the long direction of the strip-shaped chute 4a is perpendicular to the axis of the sliding rod 12; a convex column 7 is provided at an eccentric position on the top surface of the driving disk 6, and the convex column 7 is slidably inserted into the strip-shaped chute 4a.

[0036] Combined with Figure 1 As shown, by adopting the above driving mechanism 5, when the motor 8 operates, it drives the driving disk 6 to rotate, and at the same time, the convex column 7 on the driving disk 6 also rotates accordingly. At the same time, since the convex column 7 is in sliding fit with the strip-shaped chute 4a of the driven disk 4, the driven disk 4 and the sliding rod 12 can be driven to move reciprocally in the left and right directions. Therefore, when electroplating the blade 17, the suspension component 10 reciprocates along with the sliding rod 12, thereby driving the clamped blade 17 to move back and forth in the electroplating tank 16, playing a role in stirring the bath liquid, and thus improving the uniformity of the surface coating.

[0037] In this embodiment, each suspension component 10 includes a cross beam 9, a suspension rod 14 and a chuck 15; the middle part of the cross beam 9 is installed on the sliding rod 12, and the long direction of the cross beam 9 is perpendicular to the sliding rod 12; the suspension rods 14 are respectively installed at both ends of the cross beam 9; the chuck 15 is arranged at the lower end of the suspension rod 14, and a mortise 15a is provided on the chuck 15 for cooperating with the tenon 17a of the blade 17. By using the structure of the mortise 15a cooperating with the tenon 17a, the blade 17 can be conveniently and quickly clamped. In this embodiment, the suspension rods 14 are respectively installed at both ends of the cross beam 9, playing a balancing role, which is beneficial to maintaining the balance and stability of the movement of the blade 17.

[0038] Combined with Figure 5 As shown, a baffle 15b is provided at one end of the mortise 15a. By providing the baffle 15b, the entire mortise 15a forms a structure with one end open and the other end closed. When clamping the blade 17, only need to push the tenon 17a of the blade 17 from the open end of the mortise 15a and abut against the baffle 15b to complete the clamping. When disassembling, pull out the tenon 17a from the open end of the mortise 15a, which is convenient for clamping and removing the blade 17.

[0039] Combined withFigure 1 , Figure 2 As shown in Figure 2 , a rack 1 is installed between the left and right side plates of the electroplating tank 16; a suspension rod 14 is rotatably installed at the end of the cross beam 9; a gear 2 is provided at the top of the suspension rod 14, and the gear 2 meshes with the rack 1.

[0040] By adopting the above structure, when the driving mechanism 5 drives the sliding rod 12 to perform a reciprocating motion, since the gear 2 and the rack 1 mesh with each other, the gear 2 can be driven to rotate, so that the suspension rod 14, the chuck 15 and the clamped blade 17 can be driven to rotate together. Therefore, when electroplating the blade 17, the blade 17 rotates around the axis of the suspension rod 14 and reciprocates in the left - right direction of the electroplating tank 16, forming a compound motion. Under the action of the compound motion of the blade 17, the bath liquid can be well stirred, and the distribution uniformity of metal ions in the solution is improved.

[0041] Combined with Figure 3 and Figure 4 As shown in Figure 4 , the end of the cross beam 9 is provided as a bearing seat 9a; a thrust bearing 3 is provided between the bearing seat 9a and the gear 2; the top of the suspension rod 14 passes through the bearing seat 9a and the thrust bearing 3 from bottom to top and is fixedly connected to the gear 2.

[0042] Combined with Figure 1 As shown in Figure 1 , the number of the racks 1 is two; one rack 1 is spaced from the front panel of the electroplating tank 16 to form a first socket 16b, and the other rack 1 is spaced from the rear panel of the electroplating tank 16 to form a second socket 16c; an anode plate (not shown in the figure) is inserted at the first socket 16b and the second socket 16c. In this embodiment, the electroplating tank 16 is arranged in a cuboid shape, and square holes are respectively provided on the upper parts of the left and right side plates for inserting the racks 1. When electroplating, the blade 17 acts as a cathode to participate in electrolytic reduction. Since the blade 17 performs a compound motion during electroplating, the time when each part of the irregular flow channel surface on the blade 17 faces the anode plate is the same, and the probability that the surface of the blade 17 is close to the area where the electric field lines are densely distributed is the same, thereby improving the uniformity of the metal coating.

[0043] Combined with Figure 3As shown, two jacks 9b are provided in the middle of the cross beam 9; a plurality of pairs of mounting posts 13 are arranged at intervals along the axial direction of the sliding rod 12; the two columns of each pair of mounting posts 13 are located on both sides of the sliding rod 12; the cross beam 9 is placed on the sliding rod 12, and the two columns of each pair of mounting posts 13 are respectively inserted into the two jacks 9b of the cross beam 9. Further, a seat body 11 is welded on the sliding rod 12, and the mounting posts 13 are welded on the seat body 11. The matching structure between the cross beam 9 and the sliding rod 12 forms a detachable structure, so that the suspension assembly 10 can be conveniently detached from the sliding rod 12, and the suspension assembly can be flexibly installed according to the number of blades 17, avoiding the empty clamping suspension rod 14 from being immersed in the electroplating solution, and achieving the good effect of protecting the fixture and prolonging the service life.

[0044] Combined with Figure 3 、 Figure 4 As shown, in order to facilitate the installation of the thrust bearing 3, a counterbore 9c is provided on the bearing seat 9a; an annular groove is provided on the lower end face of the gear 2; the seat ring of the thrust bearing 3 is installed in the counterbore 9c of the bearing seat 9a; the shaft ring of the thrust bearing 3 is installed in the annular groove on the lower end face of the gear 2.

[0045] In summary, the electroplating device provided in this embodiment can realize the reciprocating movement and rotational movement of the blade 17 in the electroplating solution. The irregular flow channel surfaces of the blade 17 face the anode plate for the same length of time at each part, improving the thickness uniformity of the coating on the surface of the blade 17 and ensuring the coating quality of the product; at the same time, the blade 17 performs a compound movement in the electroplating tank 16, achieving the effect of stirring the bath liquid, making the metal ions more evenly distributed in the solution, and improving the electroplating efficiency; the suspension assembly 10 can be flexibly installed and disassembled, realizing quick clamping and improving the processing speed.

[0046] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An electroplating device for a low-pressure turbine blade of an aeroengine, characterized in that Comprising: A plating bath (16) for containing a solution of coating metal cations; A sliding rod (12) whose two ends are respectively slidably inserted into the slide rod mounting holes (16a) at the middle positions of the upper parts of the left and right side plates of the plating bath (16); A driving mechanism (5) for driving the sliding rod (12) to reciprocate in the left - right direction; A plurality of suspension assemblies (10) mounted on the sliding rod (12) for suspending the blades (17) to be plated.

2. The electroplating device for a low-pressure turbine blade of an aeroengine according to claim 1, wherein The driving mechanism (5) includes a motor (8), a driving disk (6) and a driven disk (4); The motor (8) is mounted on the outer wall of the left side plate of the plating bath (16); The driving disk (6) is mounted on the output shaft of the motor (8); The driven disk (4) is mounted on the left end head of the sliding rod (12), and the bottom surface of the driven disk (4) is in sliding fit with the top surface of the driving disk (6); A strip - shaped chute (4a) is formed in the driven disk (4); the long direction of the strip - shaped chute (4a) is perpendicular to the axis of the sliding rod (12); A convex column (7) is provided at an eccentric position on the top surface of the driving disk (6), and the convex column (7) is slidably inserted into the strip - shaped chute (4a).

3. The electroplating device for a low-pressure turbine blade of an aeroengine according to claim 1, characterized in that, Each of the suspension assemblies (10) includes a cross beam (9), a suspension rod (14) and a chuck (15); The middle part of the cross beam (9) is mounted on the sliding rod (12), and the long direction of the cross beam (9) is perpendicular to the sliding rod (12); The suspension rods (14) are respectively mounted at both ends of the cross beam (9); The chuck (15) is arranged at the lower end of the suspension rod (14), and a mortise (15a) is formed in the chuck (15) for cooperating with the tenon of the blade (17).

4. The electroplating device for a low-pressure turbine blade of an aeroengine according to claim 3, characterized in that, A rack (1) is erected between the left and right side plates of the plating bath (16); The suspension rod (14) is rotatably mounted at the end of the cross beam (9); A gear (2) is provided at the top end of the suspension rod (14), and the gear (2) meshes with the rack (1).

5. The electroplating device for a low-pressure turbine blade of an aeroengine according to claim 4, characterized in that, The end of the cross beam (9) is provided as a bearing seat (9a); A thrust bearing (3) is provided between the bearing seat (9a) and the gear (2); The top end of the suspension rod (14) passes through the bearing seat (9a) and the thrust bearing (3) from bottom to top and is fixedly connected to the gear (2).

6. The electroplating device for a low-pressure turbine blade of an aeroengine according to claim 4, characterized in that, The number of the racks (1) is two; one rack (1) is spaced from the front panel of the plating bath (16) to form a first socket (16b), and the other rack (1) is spaced from the rear panel of the plating bath (16) to form a second socket (16c); An anode plate is inserted at the first socket (16b) and the second socket (16c).

7. The electroplating device for a low-pressure turbine blade of an aeroengine according to claim 3, characterized in that, Two jacks (9b) are provided in the middle of the cross beam (9); A plurality of pairs of mounting posts (13) are arranged at intervals along the axial direction of the sliding rod (12); the two columns of each pair of mounting posts (13) are located on both sides of the sliding rod (12); The cross beam (9) is placed on the sliding rod (12), and the two columns on each pair of mounting columns (13) are respectively inserted into the two jacks (9b) of the cross beam (9).

8. The electroplating device for a low-pressure turbine blade of an aeroengine according to claim 7, wherein, A seat body (11) is welded on the sliding rod (12), and the mounting column (13) is welded on the seat body (11).

9. The electroplating device for a low-pressure turbine blade of an aeroengine according to claim 3, characterized in that, A baffle (15b) is provided at one end of the mortise groove (15a).

10. A plating device for a low-pressure turbine blade of an aeroengine according to claim 5, characterized in that, A counterbore (9c) is provided on the bearing block (9a); An annular groove is provided on the lower end surface of the gear (2); The seat ring of the thrust bearing (3) is installed in the counterbore (9c) of the bearing block (9a); The shaft ring of the thrust bearing (3) is installed in the annular groove on the lower end surface of the gear (2).

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