A surface polishing device for machining the turbine disk of a turbojet engine

Abstract

A surface polishing device for the machining of a turbine disk of a turbojet engine, which relates to the technical field of metal surface polishing and machining. It includes a polishing platform, on which are successively provided a feeding and conveying assembly, a magnetic abrasive polishing assembly, a mechanical surface grinding assembly, a surface drying assembly, an electrolytic polishing assembly and a station conversion assembly; the magnetic abrasive polishing assembly includes an upper polishing box with an open lower end and a lower polishing box with an open upper end, and the outer dimension of the upper polishing box matches the inner dimension of the lower polishing box; a lower magnetic plate is fixedly installed on the inner bottom surface of the lower polishing box, an upper magnetic plate is fixedly installed on the inner top surface of the upper polishing box, and magnetic abrasives are piled on the upper surface of the lower magnetic plate. The present invention solves the problems existing in the traditional turbine disk polishing process, such as low automation degree, poor multi-process coordination, difficult polishing of complex structures, uneven surface treatment, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of metal surface polishing and machining, and particularly to a surface polishing device for machining a turbine disk of a turbojet engine. Background Art

[0002] The turbine disk (usually called the turbine disk) in a turbine engine is one of the core components of the turbine part, mainly used for fixing the turbine blades and transmitting the aerodynamic force and centrifugal force borne by the blades to the engine main shaft.

[0003] The manufacturing process of the turbine disk of a turbine engine is extremely complex, involving multiple key links such as material preparation, forming, precision machining, heat treatment, surface treatment, and detection.

[0004] In the manufacturing process of the turbine disk of a turbine engine, surface polishing and machining is a very important link. In terms of necessity, in order to ensure high-precision fit with the main shaft and reduce friction and fretting wear, it is necessary to precisely polish key mating surfaces such as the bearing mounting surface and the journal contact surface; in order to ensure flatness and low roughness to prevent gas leakage, it is necessary to polish the sealing surface; the side walls and bottom surfaces of the dovetail grooves need to eliminate the tool marks after milling or broaching to avoid stress concentration leading to fatigue cracks, so polishing and machining is also required; due to the diversity of the polished parts, the polishing and machining of the engine turbine disk usually involves multiple processes including mechanical grinding, magnetic grinding, and electrolytic polishing. In order to achieve the best effect, it is necessary to coordinate the application of multiple processes.

[0005] However, due to the special shape of the turbine disk of a turbine engine, the differences in the polished parts, and the diversity of the polishing methods, when using existing polishing equipment to perform surface refinement treatment on it, the following problems often occur:

[0006] 1. The degree of automation of turbine disk polishing is low and there is a lot of manual intervention. Specifically, the traditional polishing process relies on manual loading and unloading and station conversion, with low efficiency and poor consistency; multiple processes (such as grinding, surface grinding, and polishing) require independent equipment and the process is fragmented.

[0007] 2. It is difficult to polish complex structures (such as dovetail grooves and special-shaped cooling holes). Specifically, traditional mechanical grinding is difficult to cover parts such as dovetail grooves and special-shaped holes of the turbine disk, and it is easy to leave dead corners; manual polishing has low precision and is easy to damage the workpiece.

[0008] 3. The uniformity and efficiency of surface treatment are insufficient. Specifically, traditional mechanical surface grinding is prone to local overheating or material damage; the fluidity of the electrolytic polishing solution is poor, resulting in uneven surface leveling.

[0009] 4. Poor coordination among multiple processes and low switching efficiency. Specifically, magnetic abrasive finishing, mechanical surface grinding, and electrolytic polishing need to be operated step by step, with the workpiece being repeatedly clamped, resulting in accuracy loss; process parameters (such as pressure and current) cannot be dynamically adapted to the results of the previous process.

[0010] 5. Low drying efficiency in post-treatment. Specifically, water stains remaining after electrolytic polishing are likely to cause secondary pollution or corrosion; natural drying takes a long time and affects the production rhythm.

[0011] In summary, it is obvious that the existing technology has inconveniences and defects in actual use, so it is necessary to be improved. Summary of the Invention

[0012] In view of the defects in the existing technology, the present invention provides a surface polishing device for machining the turbine disk of a turbojet engine to solve the problems of low automation, poor coordination among multiple processes, difficulty in polishing complex structures, and uneven surface treatment existing in the polishing of turbine disks in the traditional technology.

[0013] To achieve the above object, the present invention provides the following technical solutions:

[0014] A surface polishing device for machining the turbine disk of a turbojet engine, including a polishing floor, on which a loading and conveying component, a magnetic abrasive finishing component, a mechanical surface grinding component, a surface drying component, an electrolytic polishing component, and a station conversion component are sequentially arranged.

[0015] As an optimized solution, the loading and conveying component includes a conveying side plate and a limiting right-angle seat, the lower ends of the conveying side plate and the limiting right-angle seat are respectively fixedly connected to the upper surface of the polishing floor, and two longitudinally symmetric conveying rollers are rotatably arranged between the conveying side plate and the limiting right-angle seat, and a conveyor belt is sleeved between the two conveying rollers.

[0016] As an optimized solution, a vertical hydraulic telescopic cylinder is fixedly connected to the center of the upper surface of the limiting right-angle seat, the upper telescopic end of the hydraulic telescopic cylinder is fixedly connected to a C-shaped lifting seat with a lateral opening, and a steering jib is arranged on the C-shaped lifting seat.

[0017] As an optimized solution, the magnetic abrasive finishing component includes an upper grinding box with an open lower end and a lower grinding box with an open upper end, and the outer dimension of the upper grinding box matches the inner dimension of the lower grinding box.

[0018] As an optimized solution, a rotating support frame is fixedly connected to the upper surface of the polishing floor, the lower grinding box is rotatably installed on the rotating support frame, and the upper grinding box is vertically installed on the steering jib.

[0019] As an optimized solution, a lower magnetic plate is fixedly installed on the inner bottom surface of the lower grinding box, an upper magnetic plate is fixedly installed on the inner top surface of the upper grinding box, and magnetic abrasives are stacked on the upper surface of the lower magnetic plate.

[0020] As an optimized solution, a horizontal clamping and positioning frame is fixedly connected to the inner peripheral wall of the upper grinding box near the lower opening, and a plurality of positioning chucks are telescopically arranged in the inner ring of the clamping and positioning frame.

[0021] As an optimized solution, two conveying drive motors are respectively fixedly connected to the lateral outer walls of the conveying side plates corresponding to the two conveying rollers, and the end of the output shaft of the conveying drive motor passes through the conveying side plate and is fixedly connected to the side end face of the conveying roller.

[0022] As an optimized solution, a steering drive motor is fixedly connected to the inner top surface of the C-shaped lifting seat, and the end of the output shaft of the steering drive motor passes upward through the C-shaped lifting seat and is fixedly connected to the end of the steering jib.

[0023] As an optimized solution, a stepping motor is fixedly connected to the inner top surface of the rotating support frame, the end of the output shaft of the stepping motor passes upward through the rotating support frame and is fixedly connected to the center of the lower end face of the lower grinding box, and two laterally symmetrical electric control telescopic cylinders are fixedly connected to the lower surface of the steering jib, and the lower telescopic ends of each electric control telescopic cylinder are respectively fixedly connected to the upper end face of the upper grinding box.

[0024] As an optimized solution, a plurality of centrally symmetric electromagnetic generators are fixedly connected to the outer peripheral wall of the lower grinding box, the electromagnetic generators are used to regulate the magnetic field intensity and distribution, and the electromagnetic generators are fixedly connected to the lower magnetic plate.

[0025] As an optimized solution, the electromagnetic generator is also fixedly connected to the center of the upper end face of the upper grinding box, and the electromagnetic generator is fixedly connected to the upper magnetic plate.

[0026] As an optimized solution, a first side plate and a second side plate are respectively fixedly connected to the two longitudinal side ends of the polishing platform, and both the first side plate and the second side plate are horizontally arranged square plates.

[0027] As an optimized solution, the mechanical surface grinding assembly includes a fixed support frame, the fixed support frame is a U-shaped frame with an opening facing downward, and the two lower ends of the fixed support frame are respectively fixedly connected to the two lateral side walls of the first side plate.

[0028] As an optimized solution, a grinding drive motor is fixedly connected to the center of the upper surface of the fixed support frame, and the end of the output shaft of the grinding drive motor passes downward through the fixed support frame and is fixedly connected with an end face grinding disc.

[0029] As an optimized solution, the surface drying assembly includes a drying air box, which is a square box with a lateral opening, and the lower end of the drying air box is fixedly connected to the upper surface of the second side plate.

[0030] As an optimized solution, a fan driving motor is fixedly connected to the center of the longitudinal end face of the drying air box, and the end of the output shaft of the fan driving motor passes through the side wall of the drying air box and is fixedly connected with a fan blade.

[0031] As an optimized solution, an annular hot air pipe is also fixedly arranged in the drying air box.

[0032] As an optimized solution, the electrolytic polishing assembly includes an electrolytic tank, which is a square box with an open upper end. The lower end of the electrolytic tank is fixedly connected to the upper surface of the polishing platform. A conductive support seat is fixedly connected to the center of the inner bottom surface of the electrolytic tank, and a plurality of horizontal support strip plates are fixedly connected to the upper end of the conductive support seat.

[0033] As an optimized solution, an annular electrolytic heating pipe is also fixedly arranged in the electrolytic tank.

[0034] As an optimized solution, a negative electrode plate is respectively fixedly arranged on each transverse inner wall of the electrolytic tank, and a power rectifier is respectively fixedly connected to each transverse outer wall of the electrolytic tank. The power rectifier is fixedly connected to the negative electrode plate.

[0035] As an optimized solution, a distribution box is fixedly connected to the longitudinal outer wall of the electrolytic tank, and both ends of the electrolytic heating pipe respectively pass through the electrolytic tank and are fixedly connected to the distribution box.

[0036] As an optimized solution, two negative cables and one positive cable are respectively externally connected to the distribution box. The two negative cables are respectively fixedly connected to the two power rectifiers, and the end of the positive cable passes through the electrolytic tank and is fixedly connected to the conductive support seat.

[0037] As an optimized solution, an electrolyte supply pump is arranged on one transverse side of the electrolytic tank. The electrolyte supply pump is fixedly connected to the upper surface of the polishing platform. The electrolyte supply pump is externally connected with a supply pipe, and the end of the supply pipe is fixedly connected and communicated to the electrolytic tank.

[0038] As an optimized solution, an ultrasonic emitter is fixedly connected to the longitudinal inner wall of the electrolytic tank.

[0039] As an optimized solution, the station conversion assembly is arranged between the magnetic abrasive machining assembly, the mechanical surface grinding assembly, the surface drying assembly and the electrolytic polishing assembly.

[0040] As an optimized solution, a motor installation groove is provided in the middle of the lower surface of the polishing platform. The station conversion assembly includes a rotation drive motor, which is fixedly connected to the inner top surface of the motor installation groove. The end of the output shaft of the rotation drive motor passes upward through the polishing platform and is fixedly connected with a connection steering wheel. A square steering seat is fixedly connected to the upper surface of the connection steering wheel. A lifting telescopic cylinder is fixedly connected to the center of the upper surface of the square steering seat. The upper telescopic end of the lifting telescopic cylinder is fixedly connected with a flipping drive box.

[0041] As an optimized solution, a double-output shaft motor is fixedly installed in the flipping drive box. The end of each output shaft of the double-output shaft motor passes through the side box wall of the flipping drive box and is fixedly connected with a disc connecting piece. A horizontal extension telescopic cylinder is fixedly connected to the outer end surface of each disc connecting piece. The telescopic end of each extension telescopic cylinder is fixedly connected with a horizontal support plate. A positioning square column is fixedly connected to the upper surface of each horizontal support plate. A horizontal clamping telescopic cylinder is fixedly connected to the side end surface of the positioning square column. The telescopic end of the clamping telescopic cylinder is fixedly connected with an arc-shaped clamping plate.

[0042] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0043] The feeding and conveying assembly provided in the present invention can realize the automatic feeding and conveying for the polishing of the turbine disk.

[0044] The magnetic abrasive polishing assembly, mechanical surface grinding assembly, and electrolytic polishing assembly provided in the present invention can adaptively polish different parts of the turbine disk in various ways through coordinated cooperation; during the actual polishing process, according to the processing requirements of the turbine disk, the combination method or processing sequence of magnetic abrasive polishing, mechanical surface grinding, and electrolytic polishing can be adjusted.

[0045] The magnetic abrasive polishing assembly in the present invention includes an upper polishing box and a lower polishing box that are vertically butted. An upper magnetic plate is provided in the upper polishing box, and a lower magnetic plate is provided in the lower polishing box. A stable magnetic field can be formed between the upper magnetic plate and the lower magnetic plate; further, the lower polishing box is rotatably arranged on the polishing platform, and the upper polishing box is vertically installed on the steering jib. By the mutual cooperation of the lifting of the upper polishing box and the rotation of the lower polishing box, the distribution state of the magnetic field lines in the magnetic field can be changed, so as to drive the magnetic abrasive to move along a certain trajectory, and the parts such as the turbine disk tenon groove and special-shaped cooling holes are ground through cutting and rolling; in addition, a clamping and positioning frame and positioning chucks for clamping the turbine disk are also provided in the upper polishing box. The turbine disk on the conveyor belt is clamped, and then the steering jib is rotated 180° by the steering drive motor, so as to turn the upper polishing box to directly above the lower polishing box for subsequent magnetic abrasive polishing.

[0046] In the present invention, the mechanical surface grinding assembly is provided with a fixed support frame. An end face grinding disc is rotatably arranged on the inner top surface of the fixed support frame. A grinding drive motor is fixedly connected to the upper surface of the fixed support frame, and the end of the output shaft of the grinding drive motor is fixedly connected to the end face grinding disc.

[0047] In the present invention, the electrolytic polishing assembly is provided with an electrolytic tank. A conductive support seat is fixedly arranged in the middle of the inner bottom surface of the electrolytic tank. Several support strip plates are fixedly connected to the upper end of the conductive support seat. During the electrolytic polishing process, the turbine disc is placed on the conductive support seat. After being powered on, the turbine disc becomes the electrolytic positive electrode. Since the current density at the microscopic protrusions on the surface of the turbine disc is higher after being immersed in the electrolyte and powered on, it is preferentially dissolved, thereby achieving surface leveling. Further, an ultrasonic emitter is also fixedly arranged on the inner wall of the electrolytic tank. Through ultrasonic-assisted electrolytic polishing, the ultrasonic cavitation effect is utilized to enhance the fluidity of the electrolyte and improve the polishing uniformity.

[0048] The station conversion assembly provided in the present invention can realize the automatic clamping and picking of the turbine disc, and drive it to transfer for processing among the magnetic abrasive grinding assembly, the mechanical surface grinding assembly, and the electrolytic polishing assembly. Specifically, the station conversion assembly includes a connecting steering disc and a square steering seat. The connecting steering disc can rotate around the axis under the drive of a rotation drive motor. Further, a lifting telescopic cylinder is fixedly connected to the middle of the upper surface of the square steering seat. The upper telescopic end of the lifting telescopic cylinder is fixedly connected to a flipping drive box. An extending telescopic cylinder is rotatably arranged on the side end face of the flipping drive box. The telescopic end of the extending telescopic cylinder is fixedly connected to a horizontal support plate. A positioning square column is fixed on the upper surface of the horizontal support plate. An arc-shaped clamping plate is telescopically arranged on the positioning square column. The arc-shaped clamping plate can internally support and clamp the turbine disc, and then adjust the processing position of the turbine disc through operations such as turning, extending, and lifting.

[0049] The surface drying assembly provided in the present invention can perform a drying treatment on the water stains attached to the surface of the turbine disc after electrolytic polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts do not necessarily draw to actual scale.

[0051] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction;

[0052] Figure 2 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the top viewing direction;

[0053] Figure 3Schematic cross-sectional view of the internal structure of the mechanical surface grinding assembly, surface drying assembly, and station conversion assembly in the present invention in the side view direction;

[0054] Figure 4 Schematic cross-sectional view of the internal structure of the magnetic abrasive grinding assembly in the present invention in the side view direction;

[0055] Figure 5 Overall external schematic diagram of the present invention in the front view direction;

[0056] Figure 6 Overall external schematic diagram of the present invention in the top view direction.

[0057] In the figure: 1 - polishing platform, 2 - conveying side mounting plate, 3 - limiting right-angle seat, 4 - conveying rotating roller, 5 - conveyor belt, 6 - conveying drive motor, 7 - hydraulic telescopic cylinder, 8 - C-shaped lifting seat, 9 - steering drive motor, 10 - steering jib, 11 - upper grinding box, 12 - lower grinding box, 13 - rotating support frame, 14 - stepping motor, 15 - electric control telescopic cylinder, 16 - lower magnetic plate, 17 - electromagnetic generator, 18 - upper magnetic plate, 19 - clamping and positioning frame, 20 - positioning chuck, 21 - first side plate, 22 - second side plate, 23 - fixed support frame, 24 - grinding drive motor, 25 - end face grinding disc, 26 - drying air box, 27 - fan drive motor, 28 - fan blade, 29 - annular hot air duct, 30 - electrolysis tank, 31 - conductive support seat, 32 - support strip plate, 33 - electrolysis heating tube, 34 - negative plate, 35 - power rectifier, 36 - distribution box, 37 - negative cable, 38 - positive cable, 39 - electrolyte supply pump, 40 - supply pipe, 41 - ultrasonic transmitter, 42 - motor mounting groove, 43 - rotating drive motor, 44 - connecting steering wheel, 45 - square steering seat, 46 - lifting telescopic cylinder, 47 - flipping drive box, 48 - double-output shaft motor, 49 - disc connecting piece, 50 - extending telescopic cylinder, 51 - horizontal support plate, 52 - positioning square column, 53 - clamping telescopic cylinder, 54 - arc-shaped clamping plate. Detailed implementation manners

[0058] Hereinafter, embodiments of the technical solutions of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and thus are only examples and cannot be used to limit the protection scope of the present invention.

[0059] As Figures 1 to 6 shown, a surface polishing device for machining a turbine disk of a turbojet engine includes a polishing platform 1, the polishing platform 1 is a horizontally arranged square platform, and a loading and conveying assembly, a magnetic abrasive grinding assembly, a mechanical surface grinding assembly, a surface drying assembly, an electrolytic polishing assembly, and a station conversion assembly are sequentially arranged on the polishing platform 1.

[0060] The loading and conveying assembly includes a conveying side mounting plate 2 and a limiting right-angle seat 3. The lower ends of the conveying side mounting plate 2 and the limiting right-angle seat 3 are respectively fixedly connected to the upper surface of the polishing platform 1. Two longitudinally symmetric conveying rollers 4 are rotatably arranged between the conveying side mounting plate 2 and the limiting right-angle seat 3, and a conveyor belt 5 is sleeved between the two conveying rollers 4.

[0061] On the transverse outer wall of the conveying side mounting plate 2, two conveying drive motors 6 are respectively fixedly connected corresponding to the two conveying rollers 4. The end of the output shaft of the conveying drive motor 6 passes through the conveying side mounting plate 2 and is fixedly connected to the side end face of the conveying roller 4.

[0062] At the center of the upper surface of the limiting right-angle seat 3, a vertical hydraulic telescopic cylinder 7 is fixedly connected. The upper telescopic end of the hydraulic telescopic cylinder 7 is fixedly connected with a C-shaped lifting seat 8 with a lateral opening. On the inner top surface of the C-shaped lifting seat 8, a steering drive motor 9 is fixedly connected. The end of the output shaft of the steering drive motor 9 passes upward through the C-shaped lifting seat 8 and is fixedly connected with a steering lifting arm 10.

[0063] The magnetic abrasive polishing assembly includes an upper polishing box 11 and a lower polishing box 12. The upper polishing box 11 is a cylindrical box with an open lower end, and the lower polishing box 12 is a cylindrical box with an open upper end. The outer diameter of the upper polishing box 11 matches the inner diameter of the lower polishing box 12.

[0064] On the upper surface of the polishing platform 1, a rotating support frame 13 is fixedly connected. On the inner top surface of the rotating support frame 13, a stepping motor 14 is fixedly connected. The end of the output shaft of the stepping motor 14 passes upward through the rotating support frame 13 and is fixedly connected to the center of the lower end face of the lower polishing box 12. On the lower surface of the steering lifting arm 10, two laterally symmetric electric control telescopic cylinders 15 are fixedly connected. The lower telescopic ends of each electric control telescopic cylinder 15 are respectively fixedly connected to the upper end face of the upper polishing box 11.

[0065] On the inner bottom surface of the lower polishing box 12, a lower magnetic plate 16 is fixedly installed. On the outer peripheral wall of the lower polishing box 12, a number of centrally symmetric electromagnetic generators 17 are fixedly connected. The electromagnetic generators 17 are used to regulate the magnetic field intensity and distribution. The electromagnetic generators 17 are fixedly connected to the lower magnetic plate 16, and magnetic abrasives are piled on the upper surface of the lower magnetic plate 16.

[0066] On the inner top surface of the upper polishing box 11, an upper magnetic plate 18 is fixedly installed. At the center of the upper end face of the upper polishing box 11, an electromagnetic generator 17 is also fixedly connected. The electromagnetic generator 17 is fixedly connected to the upper magnetic plate 18.

[0067] On the inner peripheral wall of the upper polishing box 11 near the lower opening, a horizontal clamping and positioning frame 19 is fixedly connected. A number of positioning chucks 20 are telescopically arranged inside the inner circle of the clamping and positioning frame 19.

[0068] On the two longitudinal side end faces of the polishing platform 1, a first side plate 21 and a second side plate 22 are respectively fixedly connected. Both the first side plate 21 and the second side plate 22 are horizontally arranged square plates.

[0069] The mechanical surface grinding assembly includes a fixed support frame 23, which is a U-shaped frame with an opening facing downwards. The two lower ends of the fixed support frame 23 are respectively fixedly connected to the two lateral side walls of the first side plate 21.

[0070] At the center of the upper surface of the fixed support frame 23, a grinding drive motor 24 is fixedly connected. The end of the output shaft of the grinding drive motor 24 passes downwards through the fixed support frame 23 and is fixedly connected with an end face grinding disc 25.

[0071] The surface drying assembly includes a drying air box 26, which is a square box with a lateral opening. The lower end of the drying air box 26 is fixedly connected to the upper surface of the second side plate 22.

[0072] At the center of the longitudinal end face of the drying air box 26, a fan drive motor 27 is fixedly connected. The end of the output shaft of the fan drive motor 27 passes through the side wall of the drying air box 26 and is fixedly connected with a fan blade 28.

[0073] An annular hot air pipe 29 is also fixedly arranged inside the drying air box 26.

[0074] The electrolytic polishing assembly includes an electrolytic tank 30, which is a square box with an upper opening. The lower end of the electrolytic tank 30 is fixedly connected to the upper surface of the polishing platform 1. At the center of the inner bottom surface of the electrolytic tank 30, a conductive support seat 31 is fixedly connected, and several horizontal support strip plates 32 are fixedly connected to the upper end of the conductive support seat 31.

[0075] An annular electrolytic heating pipe 33 is also fixedly arranged inside the electrolytic tank 30.

[0076] On each transverse inner wall of the electrolytic tank 30, a negative electrode plate 34 is respectively fixedly arranged. On each transverse outer wall of the electrolytic tank 30, a power rectifier 35 is respectively fixedly connected, and the power rectifier 35 is fixedly connected to the negative electrode plate 34.

[0077] On the longitudinal outer wall of the electrolytic tank 30, a distribution box 36 is fixedly connected. The two ends of the electrolytic heating pipe 33 respectively pass through the electrolytic tank 30 and are fixedly connected to the distribution box 36.

[0078] Two negative cables 37 and one positive cable 38 are respectively externally connected to the distribution box 36. The two negative cables 37 are respectively fixedly connected to the two power rectifiers 35, and the end of the positive cable 38 passes through the electrolytic tank 30 and is fixedly connected to the conductive support seat 31.

[0079] On one transverse side of the electrolytic tank 30, an electrolyte supply pump 39 is arranged. The electrolyte supply pump 39 is fixedly connected to the upper surface of the polishing platform 1. The electrolyte supply pump 39 is externally connected to a supply pipe 40, and the end of the supply pipe 40 is fixedly connected and communicated to the electrolytic tank 30.

[0080] An ultrasonic transmitter 41 is fixedly connected to the longitudinal inner wall of the electrolytic tank 30.

[0081] The station conversion assembly is arranged between the magnetic abrasive grinding assembly, the mechanical surface grinding assembly, the surface drying assembly and the electrolytic polishing assembly.

[0082] A motor installation groove 42 is formed in the middle of the lower surface of the polishing table 1. The station conversion assembly includes a rotation drive motor 43 which is fixedly connected to the inner top surface of the motor installation groove 42. The end of the output shaft of the rotation drive motor 43 passes upward through the polishing table 1 and is fixedly connected with a connecting steering wheel 44. A square steering seat 45 is fixedly connected to the upper surface of the connecting steering wheel 44. A lifting telescopic cylinder 46 is fixedly connected to the center of the upper surface of the square steering seat 45. The upper telescopic end of the lifting telescopic cylinder 46 is fixedly connected with a flipping drive box 47.

[0083] A double-output shaft motor 48 is fixedly installed in the flipping drive box 47. The end of each output shaft of the double-output shaft motor 48 passes through the side box wall of the flipping drive box 47 and is fixedly connected with a disc connecting member 49. A horizontal extension telescopic cylinder 50 is fixedly connected to the outer end face of each disc connecting member 49. The telescopic end of each extension telescopic cylinder 50 is fixedly connected with a horizontal support plate 51. A positioning square column 52 is fixedly connected to the upper surface of each horizontal support plate 51. A horizontal clamping telescopic cylinder 53 is fixedly connected to the side end face of the positioning square column 52. The telescopic end of the clamping telescopic cylinder 53 is fixedly connected with an arc-shaped clamping plate 54.

[0084] When the present invention is in use: First, place the turbine disk to be polished flat on the conveyor belt 5, start the conveyor drive motor 6, the conveyor drive motor 6 drives the conveyor roller 4 to rotate, and then drives the conveyor belt 5 to circulate and roll, transferring the turbine disk to the middle of the conveyor belt 5; start the steering drive motor 9, the steering drive motor 9 drives the steering boom 10 to rotate, move the upper grinding box 11 to directly above the turbine disk, control the hydraulic telescopic cylinder 7 to shorten, drive the C-shaped lifting seat 8 to descend, sleeve the clamping and positioning frame 19 onto the outer peripheral wall of the turbine disk, control the positioning chuck 20 to extend, and clamp the turbine disk; control the hydraulic telescopic cylinder 7 to extend, start the steering drive motor 9 again, and transfer the upper grinding box 11 to directly above the lower grinding box 12; control the electric control telescopic cylinder 15 to extend, drive the upper grinding box 11 to move downward, and make it dock with the lower grinding box 12; start the electromagnetic generator 17, form a stable composite magnetic field between the upper magnetic plate 18 and the lower magnetic plate 16, after the magnetic field is activated, the magnetic abrasive forms a chain-like structure (magnetic brush) along the magnetic force lines in the magnetic field; start the stepping motor 14, the stepping motor 14 drives the lower grinding box 12 to rotate around the axis, and at the same time control the electric control telescopic cylinder 15 to reciprocate and extend, drive the upper grinding box 11 to move up and down, change the movement trajectory of the magnetic abrasive by changing the magnetic field, and perform grinding treatment on parts such as the turbine disk tenon groove and special-shaped cooling holes through cutting and rolling; after the magnetic abrasive grinding is completed, the positioning chuck 20 releases the clamping of the turbine disk, so as to place the turbine disk on the lower magnetic plate 16, and then move the upper grinding box 11 away from the lower grinding box 12 through operations such as lifting and turning; start the steering drive motor 9, the steering drive motor 9 drives the connecting steering disk 44 and the square steering seat 45 to rotate, control the two horizontal support plates 51 to turn to the horizontal direction, move the horizontal support plates 51 to directly above the turbine disk by controlling the lifting telescopic cylinder 46 to lift and the extension telescopic cylinder 50 to extend and contract, and use the arc-shaped clamping plate 54 to perform side clamping and positioning on the turbine disk from the inside; then move the turbine disk to the mechanical surface grinding assembly through operations such as lifting and turning for secondary mechanical polishing. Specifically, start the grinding drive motor 24, the grinding drive motor 24 drives the end face grinding disk 25 to rotate, and at the same time, through the coordinated control of the lifting telescopic cylinder 46 and the extension telescopic cylinder 50, adjust the processing position of the turbine disk to perform the grinding switching of the upper and lower end faces; start the steering drive motor 9 again, under the drive of the steering drive motor 9, the horizontal support plate 51 clamped with the turbine disk moves to directly above the electrolytic tank 30, and then transfer the turbine disk to the conductive support seat 31 by controlling the lifting telescopic cylinder 46 to extend and contract; start the electrolyte supply pump 39 to inject electrolyte into the electrolytic tank 30; the distribution box 36 connects the DC pulse electricity to the negative electrode plate 34 and the conductive support seat 31 through the negative electrode cable 37 and the positive electrode cable 38 respectively, convert the turbine disk into the electrolytic positive electrode, after power-on, the current density at the microscopic protrusions on the surface of the turbine disk is higher and it dissolves preferentially to achieve surface leveling. At the same time, turn on the ultrasonic emitter 41 to enhance the fluidity of the electrolyte by using the ultrasonic cavitation effect and improve the polishing uniformity;After the electrolytic polishing is completed, the turbine disk is removed from the electrolytic tank 30, and through operations such as lifting and turning, the turbine disk is moved to the side opening of the drying air box 26. The fan driving motor 27 is started, and the fan driving motor 27 drives the fan blade 28 to rotate. The air is blown out after being heated by the annular hot air pipe 29 to dry the water stains remaining on the surface of the turbine disk. During the drying process, the overall flipping of the turbine disk can be driven by starting the double-output shaft motor 48 to achieve multi-angle drying; in the actual polishing process, the combination method or processing sequence of magnetic abrasive polishing, mechanical surface grinding, and electrolytic polishing can be adjusted according to the processing requirements of the turbine disk.;

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A surface polishing device for machining a turbine disk of a turbojet engine, characterized in that: It includes a polishing platform (1), on which a feeding conveyor assembly, a magnetic abrasive polishing assembly, a mechanical surface grinding assembly, a surface drying assembly, an electrolytic polishing assembly and a station conversion assembly are successively arranged; The feeding conveyor assembly includes a conveyor side mounting plate (2) and a limiting right-angle seat (3). The lower ends of the conveyor side mounting plate (2) and the limiting right-angle seat (3) are respectively fixedly connected to the upper surface of the polishing platform (1). Between the conveyor side mounting plate (2) and the limiting right-angle seat (3), two longitudinally symmetric conveyor rollers (4) are rotatably arranged, and a conveyor belt (5) is sleeved between the two conveyor rollers (4); At the center of the upper surface of the limiting right-angle seat (3), a vertical hydraulic telescopic cylinder (7) is fixedly connected. The upper telescopic end of the hydraulic telescopic cylinder (7) is fixedly connected to a C-shaped lifting seat (8) with a lateral opening, and a steering jib (10) is arranged on the C-shaped lifting seat (8); The magnetic abrasive polishing assembly includes an upper polishing box (11) with an opening at the lower end and a lower polishing box (12) with an opening at the upper end. The outer diameter of the upper polishing box (11) matches the inner diameter of the lower polishing box (12); A rotating support frame (13) is fixedly connected to the upper surface of the polishing platform (1). The lower polishing box (12) is rotatably installed on the rotating support frame (13), and the upper polishing box (11) is vertically installed on the steering jib (10); A lower magnetic plate (16) is fixedly installed on the inner bottom surface of the lower polishing box (12), and an upper magnetic plate (18) is fixedly installed on the inner top surface of the upper polishing box (11). Magnetic abrasives are piled on the upper surface of the lower magnetic plate (16); A horizontal clamping and positioning frame (19) is fixedly connected to the inner peripheral wall of the upper polishing box (11) near the lower opening. A plurality of positioning chucks (20) are telescopically arranged inside the inner ring of the clamping and positioning frame (19).

2. The surface polishing device for machining a turbine disk of a turbojet engine according to claim 1, wherein: On the transverse outer wall of the conveyor side mounting plate (2), two conveyor driving motors (6) are respectively fixedly connected corresponding to the two conveyor rollers (4). The end of the output shaft of the conveyor driving motor (6) passes through the conveyor side mounting plate (2) and is fixedly connected to the side end face of the conveyor roller (4).

3. The surface polishing device for machining the turbine disk of a turbojet engine according to claim 1, wherein: A steering driving motor (9) is fixedly connected to the inner top surface of the C-shaped lifting seat (8). The end of the output shaft of the steering driving motor (9) passes upward through the C-shaped lifting seat (8) and is fixedly connected to the end of the steering jib (10).

4. A surface polishing device for machining a turbine disk of a turbojet engine according to claim 1, characterized in that: A stepping motor (14) is fixedly connected to the inner top surface of the rotating support frame (13). The end of the output shaft of the stepping motor (14) passes upward through the rotating support frame (13) and is fixedly connected to the center of the lower end face of the lower polishing box (12). Two laterally symmetric electric control telescopic cylinders (15) are fixedly connected to the lower surface of the steering jib (10). The lower telescopic end of each electric control telescopic cylinder (15) is respectively fixedly connected to the upper end face of the upper polishing box (11).

5. A surface polishing device for machining a turbine disk of a turbojet engine according to claim 1, characterized in that: A plurality of centrally symmetric electromagnetic generators (17) are fixedly connected to the outer peripheral wall of the lower polishing box (12). The electromagnetic generators (17) are used to regulate the magnetic field intensity and distribution, and the electromagnetic generators (17) are fixedly connected to the lower magnetic plate (16); At the center of the upper end face of the upper grinding box (11), the electromagnetic generator (17) is also fixedly connected, and the electromagnetic generator (17) is fixedly connected to the upper magnetic plate (18).

6. The surface polishing device for machining the turbine disk of a turbojet engine according to claim 1, wherein: On the two longitudinal side faces of the polishing platform (1), a first side plate (21) and a second side plate (22) are respectively fixedly connected. Both the first side plate (21) and the second side plate (22) are horizontally arranged square plates; The mechanical surface grinding assembly includes a fixed support frame (23). The fixed support frame (23) is a U-shaped frame with an opening facing downwards. The two lower ends of the fixed support frame (23) are respectively fixedly connected to the two transverse side walls of the first side plate (21); At the center of the upper surface of the fixed support frame (23), a grinding drive motor (24) is fixedly connected. The end of the output shaft of the grinding drive motor (24) passes downwards through the fixed support frame (23) and is fixedly connected to an end face grinding disc (25).

7. A surface polishing device for machining a turbine disk of a turbojet engine according to claim 6, characterized in that: The surface drying assembly includes a drying air box (26). The drying air box (26) is a square box with a lateral opening. The lower end of the drying air box (26) is fixedly connected to the upper surface of the second side plate (22); At the center of the longitudinal end face of the drying air box (26), a fan drive motor (27) is fixedly connected. The end of the output shaft of the fan drive motor (27) passes through the side wall of the drying air box (26) and is fixedly connected to a fan blade (28); An annular hot air pipe (29) is also fixedly arranged in the drying air box (26).

8. A surface polishing device for machining a turbine disk of a turbojet engine according to claim 1, characterized in that: The electrolytic polishing assembly includes an electrolytic tank (30). The electrolytic tank (30) is a square box with an upper opening. The lower end of the electrolytic tank (30) is fixedly connected to the upper surface of the polishing platform (1). At the center of the inner bottom surface of the electrolytic tank (30), a conductive support seat (31) is fixedly connected. At the upper end of the conductive support seat (31), a number of horizontal support strip plates (32) are fixedly connected; An annular electrolytic heating pipe (33) is also fixedly arranged in the electrolytic tank (30); On each transverse inner wall of the electrolytic tank (30), a negative electrode plate (34) is respectively fixedly arranged. On each transverse outer wall of the electrolytic tank (30), a power supply rectifier (35) is fixedly connected. The power supply rectifier (35) is fixedly connected to the negative electrode plate (34); On the longitudinal outer wall of the electrolytic tank (30), a distribution box (36) is fixedly connected. The two ends of the electrolytic heating pipe (33) respectively pass through the electrolytic tank (30) and are fixedly connected to the distribution box (36); Two negative cables (37) and one positive cable (38) are respectively externally connected to the distribution box (36). The two negative cables (37) are respectively fixedly connected to the two power supply rectifiers (35). The end of the positive cable (38) passes through the electrolytic tank (30) and is fixedly connected to the conductive support seat (31); On one transverse side of the electrolytic tank (30), an electrolyte supply pump (39) is arranged. The electrolyte supply pump (39) is fixedly connected to the upper surface of the polishing platform (1). The electrolyte supply pump (39) is externally connected to a supply pipe (40). The end of the supply pipe (40) is fixedly connected and communicated with the electrolytic tank (30); An ultrasonic transmitter (41) is fixedly connected to the longitudinal inner wall of the electrolysis tank (30).

9. A surface polishing device for machining a turbine disk of a turbojet engine according to claim 1, characterized in that: The station conversion assembly is arranged between the magnetic abrasive machining assembly, the mechanical surface grinding assembly, the surface drying assembly, and the electrolytic polishing assembly.

10. A surface polishing device for machining a turbine disk of a turbojet engine according to claim 9, characterized in that: A motor installation groove (42) is formed in the middle of the lower surface of the polishing platform (1). The station conversion assembly includes a rotation driving motor (43). The rotation driving motor (43) is fixedly connected to the inner top surface of the motor installation groove (42). The end of the output shaft of the rotation driving motor (43) passes upward through the polishing platform (1) and is fixedly connected to a connection steering wheel (44). A square steering seat (45) is fixedly connected to the upper surface of the connection steering wheel (44). A lifting telescopic cylinder (46) is fixedly connected to the center of the upper surface of the square steering seat (45). The upper telescopic end of the lifting telescopic cylinder (46) is fixedly connected to a flipping driving box (47). A double-output shaft motor (48) is fixedly installed in the flipping driving box (47). The end of each output shaft of the double-output shaft motor (48) passes through the side box wall of the flipping driving box (47) and is fixedly connected to a disc connecting piece (49). A horizontal extension telescopic cylinder (50) is fixedly connected to the outer end surface of each disc connecting piece (49). The telescopic end of each extension telescopic cylinder (50) is fixedly connected to a horizontal support plate (51). A positioning square column (52) is fixedly connected to the upper surface of each horizontal support plate (51). A horizontal clamping telescopic cylinder (53) is fixedly connected to the side end surface of the positioning square column (52). The telescopic end of the clamping telescopic cylinder (53) is fixedly connected to an arc-shaped clamping plate (54).

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