Electrolytic grinding machine tool for honeycomb sealing ring of aero-engine

Abstract

The invention relates to the technical field of honeycomb sealing ring machining tools, in particular to an electrolytic grinding machining tool for an aero-engine honeycomb sealing ring. Comprising a main shaft vertical feeding structure, a main shaft horizontal moving structure, a main shaft self-rotation conductive structure, a main shaft deflection platform, a machine tool cross beam stand column, a translation rotating conductive workbench and a machine tool base which are arranged on a machine tool body, and the main shaft vertical feeding structure and the main shaft horizontal moving structure can control translation movement of a main shaft; and the main shaft autorotation conductive structure and the translation rotation conductive workbench can be connected with the negative electrode and the positive electrode of the power source correspondingly to form a conductive path for electrochemical machining. By adopting the electrolytic grinding machining process, the problem that burrs and abrasive dust are left on the surface of the aero-engine honeycomb sealing ring after grinding machining is solved; and the mechanical stress is small in the machining process, and deformation of the honeycomb structure is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of honeycomb seal ring processing machine tools, and specifically to an electrolytic grinding processing machine tool for honeycomb seal rings of aero-engines. Background Art

[0002] Honeycomb seals are widely used structures between the rotor and stator of aero-engines. It can maintain good sealing between the high-pressure area and the low-pressure area, can replace the comb-tooth seals of high-gas turbine groups, and can improve the stability of the rotor and the output efficiency of the engine while reducing the fuel consumption of the engine. It has been widely used in the engines of space shuttles, high-power rockets and various ships, as well as steam turbines, gas turbines and compressors.

[0003] Honeycomb seal parts are typical low-rigidity thin-walled parts, and their materials are usually nickel-based superalloy difficult-to-machine materials. If conventional machining is used, under the mechanical forces of milling and grinding, serious material deformation will occur on the honeycomb wall surface, and the honeycomb will collapse under the action of mechanical stress, and the honeycomb structure will be squeezed and deformed and damaged, blocking the honeycomb holes, and cannot meet the use requirements. At present, the commonly used special machining methods for honeycomb seal structures are electric discharge grinding and electric discharge machining. However, electric discharge will affect the honeycomb and the internal brazing structure, and remelting tumors will be generated on the surface of the processed honeycomb, and the internal holes will be blocked after the brazing melts, reducing the surface machining quality.

[0004] Electrolytic grinding technology can use the grinding of the grinding wheel to control the surface dimension accuracy. At the same time, the electrolytic action does not generate remelting tumors, and the processing efficiency is high. It is an effective processing method for honeycomb seal parts. Electrolytic grinding processing is a composite processing process of electrolytic processing and grinding processing. The electrolytic process forms an oxide film on the metal surface, and then the abrasive grains of the grinding wheel remove it to expose a new metal surface for continuous electrolytic processing. Grinding is used to control the processing dimension accuracy of parts. The electrolytic action can remove the grinding chips and burrs generated by grinding, and at the same time increase the material removal rate and improve the processing efficiency.

[0005] At present, the application of electrolytic grinding technology for honeycomb seal rings of aero-engines is less, and there is no design scheme for electrolytic grinding machine tools for honeycomb seal rings. Problems such as the conductivity of the machine tool spindle and the workpiece clamping for electrolytic grinding processing still need to be solved. Summary of the Invention

[0006] The purpose of the present invention is to provide an electrolytic grinding processing machine tool for honeycomb seal rings of aero-engines to solve the problems raised in the above background art.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] An electrolytic grinding machine for an aeroengine honeycomb seal ring, comprising a spindle vertical feed structure, a spindle horizontal movement structure, a spindle self-rotation conductive structure, a spindle yaw platform, a machine tool crossbeam column, a translation and rotation conductive worktable and a machine tool base arranged on the machine tool body. The spindle vertical feed structure and the spindle horizontal movement structure can control the translation movement of the spindle. The spindle self-rotation conductive structure and the translation and rotation conductive worktable can be respectively connected to the negative and positive poles of the power supply to form a conductive path for electrochemical machining. The spindle yaw platform can control the yaw angle of the spindle. The spindle self-rotation conductive structure can install a conductive grinding wheel for mechanical grinding machining.

[0009] Preferably, the machine tool body includes a machine tool crossbeam column and a machine tool base made of marble, and the machine tool crossbeam column is installed on the machine tool base.

[0010] Preferably, the spindle vertical feed structure includes a Z-axis stepper motor, a Z-axis support frame, and a Z-axis lead screw;

[0011] Wherein, the Z-axis stepper motor is fixedly installed on the top of the Z-axis support frame, the Z-axis lead screw is fixed to the output end of the Z-axis stepper motor, a Z-axis slider is threadedly connected to the Z-axis lead screw, and the spindle yaw platform 4 is fixed to the Z-axis slider.

[0012] Preferably, the spindle horizontal movement structure includes an X-axis crossbeam guide rail, an X-axis stepper motor, an X-axis lead screw, and an X-axis horizontal guide rail;

[0013] Wherein, the X-axis crossbeam guide rail is fixed to the top of the machine tool crossbeam column, the X-axis horizontal guide rail is fixed to one side of the machine tool crossbeam column, the X-axis stepper motor is fixedly installed on the machine tool crossbeam column, the X-axis lead screw is fixed to the output end of the X-axis stepper motor, an X-axis sliding member is threadedly connected to the X-axis lead screw, the X-axis crossbeam guide rail and the X-axis horizontal guide rail are both slidably connected to the X-axis sliding member, and the Z-axis support frame is fixed to the X-axis sliding member.

[0014] Preferably, the spindle self-rotation conductive structure includes a conductive slip ring, a spindle, a spindle rotation stepper motor, a spindle housing, and a conductive grinding wheel;

[0015] Wherein, the top of the spindle is located inside the spindle housing, the spindle rotation stepper motor is fixedly installed on the top of the spindle housing, the output end of the spindle rotation stepper motor is fixedly connected with a stepper motor synchronous pulley, the outer surface of the spindle is fixedly connected with a spindle synchronous pulley, and the spindle synchronous pulley and the stepper motor synchronous pulley are connected by belt drive.

[0016] Preferably, a bearing insulating sleeve is fixedly connected inside the spindle housing, a bearing support is fixedly installed on the bearing insulating sleeve, an angular contact ball bearing is installed on the bearing support, and the bearing insulating sleeve is rotationally connected to the spindle through the angular contact ball bearing;

[0017] A conductive slip ring and a spindle junction box are installed on the spindle housing. A brush is installed inside the conductive slip ring, and the conductive slip ring conducts current to the spindle through the internal brush; the conductive slip ring is connected to the negative pole of the power supply through the spindle junction box.

[0018] An insulating sleeve for the spindle end bearing is fixedly installed at the bottom of the spindle housing. A spindle end bearing support is installed inside the insulating sleeve for the spindle end bearing. A spindle end angular contact ball bearing is installed on the spindle end bearing support, and the spindle end is rotationally connected to the spindle housing through the spindle end angular contact ball bearing.

[0019] Preferably, a conductive grinding wheel is fixedly installed at the bottom of the spindle through a locking nut. A nozzle adapter pipe is fixedly installed on one side of the spindle housing. An electrolyte pipeline interface is fixedly connected to the top of the nozzle adapter pipe, and an electrolyte nozzle is fixedly connected to the bottom of the nozzle adapter pipe.

[0020] Preferably, the spindle yaw platform includes a spindle yaw housing. A spindle yaw turbine is rotationally connected inside the spindle yaw housing. A spindle yaw ring is fixedly connected to one side of the spindle yaw turbine. A spindle yaw stepping motor is fixedly installed outside the spindle yaw housing. The output end of the spindle yaw stepping motor extends into the spindle yaw housing and is fixedly connected to a spindle yaw worm. The spindle yaw worm meshes with the spindle yaw turbine.

[0021] The spindle yaw housing is fixed to the Z-axis slider through spindle housing mounting screws. The spindle housing is fixed to the spindle yaw ring of the spindle yaw platform through spindle turntable mounting screws. A bearing end cover is fixedly installed on the spindle housing. A deep groove ball bearing is fixedly installed on the bearing end cover. The bearing housing is rotationally connected to the spindle through the deep groove ball bearing.

[0022] Preferably, the translation and rotation conductive workbench includes a workpiece pressing plate, a plastic water baffle, a honeycomb sealing ring, a workpiece mounting base, an insulating plate and a workbench.

[0023] Among them, a workbench translation stepping motor and a workbench guide rail are fixedly connected to the machine tool base. The output end of the workbench translation stepping motor is rotationally connected to a workbench lead screw. A workbench slider is threadedly connected to the workbench lead screw. The top of the workbench slider is fixedly connected to a workbench, and the workbench is slidably connected to the workbench guide rail.

[0024] Preferably, a support column is rotationally connected to the workbench. The top of the support column is fixedly connected to an insulating plate. The top of the insulating plate is fixedly connected to a workpiece mounting base. A workbench rotation worm gear is fixedly connected to the outer surface of the support column. A workbench rotation stepping motor is fixedly installed on the workbench. The output end of the workbench rotation stepping motor is fixedly connected to a workbench rotation worm. The workbench rotation worm meshes with the workbench rotation worm gear.

[0025] A plastic water baffle is fixedly connected to the top of the workpiece mounting base. A workpiece pressing plate is arranged on the top of the workpiece mounting base. A honeycomb sealing ring is arranged on the workpiece mounting base, and the workpiece pressing plate is used to fix the honeycomb sealing ring.

[0026] Advantages of the present invention:

[0027] 1. By adopting the process of electrolytic grinding machining, this solution solves the problem that burrs and chips remain on the surface of the honeycomb sealing ring of an aero-engine after grinding machining, and the mechanical stress during the machining process is small, reducing the deformation of the honeycomb structure.

[0028] 2. For the high-precision machining of the honeycomb sealing ring of an aero-engine, this solution proposes a machining machine tool. A conductive device is designed inside the main shaft, and it can form a conductive path with the honeycomb sealing ring. Using the machining process of electrolytic grinding, it has the advantages of small mechanical stress and high surface quality during the electrolytic grinding machining process.

[0029] 3. Compared with the existing electro-discharge machining and electro-discharge grinding for machining the honeycomb sealing ring of an aero-engine, which have problems of remelting layer and remelting particles, the electrolytic grinding machine tool of this solution uses a combined machining method of electrolysis and electrolytic grinding. The electrolytic machining removes the chips and burrs generated by grinding, without spark discharge and no remelting layer and remelting particles. And compared with grinding machining, its machining efficiency is high, and the dimensional accuracy of the honeycomb sealing ring of the aero-engine after machining is relatively high, having certain application value. Description of the Drawings

[0030] 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, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0031] Figure 1 It is a schematic diagram of the overall structure of the electrolytic grinding machine tool of the present invention;

[0032] Figure 2 It is a diagram of the movement mode of the main shaft and the workbench of the electrolytic grinding machine tool of the present invention;

[0033] Figure 3 It is a schematic diagram of the self-rotation conductive structure of the main shaft of the electrolytic grinding machine tool of the present invention;

[0034] Figure 4 It is the present invention Figure 3 The schematic diagram of the structure of the main shaft yaw platform in;

[0035] Figure 5 It is a schematic diagram of the positive yaw of the main shaft of the present invention;

[0036] Figure 6Schematic diagram of the spindle negative yaw of the present invention;

[0037] Figure 7 Schematic diagram of the structure of the workbench of the electrolytic grinding machine tool of the present invention;

[0038] Figure 8 is the present invention Figure 7 Schematic diagram of the structure of the workpiece pressing plate part in.

[0039] The reference numerals in the figure are as follows:

[0040] 1. Spindle vertical feed structure; 2. Spindle horizontal movement structure; 3. Spindle self-rotation conductive structure; 4. Spindle yaw platform; 401. Spindle yaw housing; 402. Spindle yaw worm; 403. Spindle yaw turbine; 404. Spindle yaw ring; 5. Machine tool crossbeam column; 6. Translating and rotating conductive workbench; 7. Machine tool base; 8. Z-axis stepping motor; 9. Z-axis support frame; 10. Z-axis lead screw; 11. X-axis crossbeam guide rail; 12. X-axis stepping motor; 13. X-axis lead screw; 14. X-axis horizontal guide rail; 15. Workbench rotation stepping motor; 16. Rotating workbench; 17. Workbench guide rail; 18. Workbench lead screw; 19. Workbench translation stepping motor; 20. Spindle yaw stepping motor; 21. Spindle rotation stepping motor; 22. Spindle housing; 23. Stepping motor synchronous pulley; 24. Spindle synchronous pulley; 25. Bearing support; 26. Angular contact ball bearing; 27. Bearing insulating sleeve; 28. Spindle junction box; 29. Conductive slip ring; 30. Brush; 31. Electrolyte pipeline interface; 32. Nozzle adapter; 33. Spindle end bearing support; 34. Spindle end angular contact ball bearing; 35. Electrolyte nozzle; 36. Conductive grinding wheel; 37. Locking nut; 38. Spindle; 39. Spindle end bearing insulating sleeve; 40. Spindle housing mounting screw; 41. Spindle turntable mounting screw; 42. Deep groove ball bearing; 43. Bearing end cover; 44. Z-axis lead screw coupling; 45. X-axis lead screw coupling; 46. Z-axis guide rail; 47. Workpiece pressing plate; 48. Plastic water baffle; 49. Honeycomb seal ring; 50. Workpiece mounting base; 51. Insulating plate; 52. Workbench rotation worm; 53. Workbench rotation worm gear; 54. Workbench slider; 55. Workbench; 100. Z-axis slider; 200. X-axis slider 200. Detailed implementation manners

[0041] 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.

[0042] AsFigures 1-8 As shown in the figure, an electro-chemical grinding machine tool for an aero-engine honeycomb seal ring includes:

[0043] A machine tool main body, a spindle vertical feed structure 1, a spindle horizontal movement structure 2, a spindle self-rotation conductive structure 3, a spindle yaw platform 4, a machine tool crossbeam column 5, a translation and rotation conductive workbench 6, and a machine tool base 7. The spindle vertical feed structure 1 and the spindle horizontal movement structure 2 can control the translation movement of the spindle. The spindle self-rotation conductive structure 3 and the translation and rotation conductive workbench 6 can be respectively connected to the negative and positive poles of the power supply to form a conductive path for electrochemical machining. The spindle yaw platform 4 can control the yaw angle of the spindle, and the spindle self-rotation conductive structure 3 can install a conductive grinding wheel 36 for mechanical grinding.

[0044] The spindle yaw platform 4 can change the yaw angle of the spindle 38, change the grinding mode of the conductive grinding wheel 36, and machine honeycomb seal rings 49 with different profiles and different diameters.

[0045] The translation and rotation conductive workbench 6 drives the honeycomb seal ring 49 to rotate through a rotary workbench 16 driven by a workbench rotation stepping motor 15. The translation and rotation conductive workbench 6 is driven by a workbench translation stepping motor 19 to drive a workbench lead screw 18 to move back and forth along a workbench guide rail 17 in the Y-axis direction.

[0046] The machine tool main body includes a machine tool crossbeam column 5 and a machine tool base 7 made of marble. The machine tool crossbeam column 5 is installed on the machine tool base 7;

[0047] The spindle vertical feed structure 1 includes a Z-axis stepping motor 8, a Z-axis support frame 9, and a Z-axis lead screw 10;

[0048] Among them, the Z-axis stepping motor 8 is fixedly installed on the top of the Z-axis support frame 9. The Z-axis lead screw 10 is fixed to the output end of the Z-axis stepping motor 8. A Z-axis slider 100 is threadedly connected to the Z-axis lead screw 10, and the spindle yaw platform 4 is fixed to the Z-axis slider 100.

[0049] The spindle horizontal movement structure 2 includes an X-axis crossbeam guide rail 11, an X-axis stepping motor 12, an X-axis lead screw 13, and an X-axis horizontal guide rail 14;

[0050] Among them, the X-axis crossbeam guide rail 11 is fixed to the top of the machine tool crossbeam column 5. The X-axis horizontal guide rail 14 is fixed to one side of the machine tool crossbeam column 5. The X-axis stepping motor 12 is fixedly installed on the machine tool crossbeam column 5. The X-axis lead screw 13 is fixed to the output end of the X-axis stepping motor 12. An X-axis sliding member 200 is threadedly connected to the X-axis lead screw 13. Both the X-axis crossbeam guide rail 11 and the X-axis horizontal guide rail 14 are slidably connected to the X-axis sliding member 200, and the Z-axis support frame 9 is fixed to the X-axis sliding member 200.

[0051] As Figure 2As shown in the figure, it is the movement mode of the spindle and the workbench of the electrolytic grinding machine tool for the honeycomb seal ring of the aero-engine. The vertical feed structure 1 of the spindle drives the Z-axis lead screw 10 to rotate through the Z-axis stepping motor 8 installed on the Z-axis support frame 9, driving the spindle swing platform 4 and the spindle self-rotation conductive structure 3 to move up and down along the Z-axis.

[0052] The horizontal movement structure 2 of the spindle drives the X-axis lead screw 13 through the X-axis stepping motor 12, driving the spindle swing platform 4 and the spindle self-rotation conductive structure 3 to move left and right along the X-axis. The spindle swing platform 4 is driven by the spindle swing stepping motor 20 to swing the spindle self-rotation conductive structure 3.

[0053] The spindle self-rotation conductive structure 3 includes a spindle housing 22, a slip ring 29, a spindle 38, a spindle rotation stepping motor 21 and a conductive grinding wheel 36.

[0054] Among them, the top of the spindle 38 is located inside the spindle housing 22. The spindle rotation stepping motor 21 is fixedly installed on the top of the spindle housing 22. The output end of the spindle rotation stepping motor 21 is fixedly connected with a stepping motor synchronous pulley 23. The outer surface of the spindle 38 is fixedly connected with a spindle synchronous pulley 24. The spindle synchronous pulley 24 and the stepping motor synchronous pulley 23 are connected by belt drive; so that the spindle rotation stepping motor 21 drives the spindle synchronous pulley 24 through the stepping motor synchronous pulley 23 to drive the spindle 38 to rotate.

[0055] An insulating sleeve 27 of the bearing is fixedly connected inside the spindle housing 22. A bearing support 25 is fixedly installed on the insulating sleeve 27 of the bearing. An angular contact ball bearing 26 is installed on the bearing support 25. The insulating sleeve 27 of the bearing is rotationally connected with the spindle 38 through the angular contact ball bearing 26.

[0056] A slip ring 29 and a spindle junction box 28 are installed on the spindle housing 22. A brush 30 is installed inside the slip ring 29. The slip ring 29 conducts current to the spindle 38 through the internal brush 30; the slip ring 29 is connected to the negative pole of the power supply through the spindle junction box 28.

[0057] An insulating sleeve 39 of the spindle end bearing is fixedly installed at the bottom of the spindle housing 22. A spindle end bearing support 33 is installed inside the insulating sleeve 39 of the spindle end bearing. A spindle end angular contact ball bearing 34 is installed on the spindle end bearing support 33. The end of the spindle 38 is rotationally connected with the spindle housing 22 through the spindle end angular contact ball bearing 34 and is provided with insulation protection through the insulating sleeve 39 of the spindle end bearing.

[0058] A conductive grinding wheel 36 is fixedly installed at the bottom of the spindle 38 through a locking nut 37. A nozzle adapter 32 is fixedly installed on one side of the spindle housing 22. An electrolyte pipeline interface 31 is fixedly connected to the top of the nozzle adapter 32. An electrolyte nozzle 35 is fixedly connected to the bottom of the nozzle adapter 32.

[0059] The electrolyte pipeline interface 31 is connected to the external electrolyte input pipeline, and the electrolyte nozzle 35 is used to provide electrolyte during the processing.

[0060] The spindle yaw platform 4 includes a spindle yaw housing 401. A spindle yaw turbine 403 is rotatably connected inside the spindle yaw housing 401. A spindle yaw ring 404 is fixedly connected to one side of the spindle yaw turbine 403. A spindle yaw stepping motor 20 is fixedly installed outside the spindle yaw housing 401. The output end of the spindle yaw stepping motor 20 extends into the spindle yaw housing 401 and is fixedly connected to a spindle yaw worm 402. The spindle yaw worm 402 meshes with the spindle yaw turbine 403.

[0061] The spindle yaw housing 401 is fixed to the Z-axis slider 100 through the spindle housing mounting screws 40. The spindle housing 22 is fixed to the spindle yaw ring 404 of the spindle yaw platform 4 through the spindle turntable mounting screws 41. A bearing end cover 43 is fixedly installed on the spindle housing 22. A deep groove ball bearing 42 is fixedly installed on the bearing end cover 43. The bearing housing 22 is rotatably connected to the spindle 38 through the deep groove ball bearing 42.

[0062] Driven by the spindle yaw stepping motor 20, the spindle yaw worm 402 rotates, the spindle yaw worm 402 drives the spindle yaw turbine 403 to rotate, the spindle yaw turbine 403 drives the spindle yaw ring 404 to rotate, and the spindle yaw ring 404 drives the spindle self-rotating conductive structure 3 to yaw.

[0063] As Figure 5 、 Figure 6 and Figure 7 shown, the spindle 38 can be controlled by the spindle yaw platform 4 to yaw at an angle and can perform forward and reverse yaw movements. The Z-axis stepping motor 8 and the X-axis stepping motor 12 are connected to the Z-axis lead screw 10 and the X-axis lead screw 13 through the Z-axis lead screw coupling 44 and the X-axis lead screw coupling 45. A Z-axis guide rail 46 is fixedly connected to the Z-axis support frame 9. The Z-axis guide rail 46 is slidably connected to the Z-axis slider 100, so that the spindle self-rotating conductive structure 3, the spindle yaw platform 4, and the Z-axis slider 100 can move up and down along the Z-axis guide rail 46 on the Z-axis support frame 9. The yaw and translation of the spindle 38 can perform the machining of the complex surface and the inner and outer circles of the honeycomb seal ring 49.

[0064] A workbench translation stepping motor 19 and a workbench guide rail 17 are fixedly connected to the machine tool base 7. The output end of the workbench translation stepping motor 19 is rotatably connected to a workbench lead screw 18. A workbench slider 54 is threadedly connected to the workbench lead screw 18. The top of the workbench slider 54 is fixedly connected to a workbench 55. The workbench 55 is slidably connected to the workbench guide rail 17.

[0065] A support column is rotatably connected to the workbench 55. The top of the support column is fixedly connected with an insulating plate 51. The top of the insulating plate 51 is fixedly connected with a workpiece mounting base 50. The outer surface of the support column is fixedly connected with a workbench rotating worm gear 53. The workbench 55 is fixedly installed with a workbench rotating stepping motor 15. The output end of the workbench rotating stepping motor 15 is fixedly connected with a workbench rotating worm 52. The workbench rotating worm 52 meshes with the workbench rotating worm gear 53;

[0066] A plastic water baffle 48 is fixedly connected to the top of the workpiece mounting base 50. A workpiece pressing plate 47 is arranged on the top of the workpiece mounting base 50. A honeycomb seal ring 49 is arranged on the workpiece mounting base 50. The workpiece pressing plate 47 is used to fix the honeycomb seal ring 49.

[0067] As Figure 7 and Figure 8 shown, the workpiece pressing plate 47 is fixed by two bolts. The bolt body part passes through the workpiece pressing plate 47 and is threadedly connected with the workpiece mounting base 50. There are corresponding screw holes on the workpiece mounting base 50. The bolt head part presses the workpiece pressing plate 47. One end of the workpiece pressing plate 47 presses the honeycomb seal ring 49. By removing the bolts, the workpiece pressing plate 47 can be lifted upward to take out the honeycomb seal ring 49;

[0068] The honeycomb seal ring 49 is fixed to the workpiece mounting base 50 by the workpiece pressing plate 47. The insulating plate 51 insulates the workpiece mounting base 50 from the translation and rotation conductive workbench 6. The plastic water baffle 48 is used to enclose the electrolyte during the processing. The translation and rotation conductive workbench 6 is installed on the workbench 55 through the installation groove. The workbench rotating stepping motor 15 drives the workpiece mounting base 50 and the honeycomb seal ring 49 to rotate through the workbench rotating worm 52 and the workbench rotating worm gear 53. The workbench 55 is driven by the workbench translation stepping motor 19 and the workbench lead screw 18 to move along the workbench guide rail 17.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An electrolytic grinding machine tool for honeycomb seal rings of aero-engines, characterized in that, It includes a spindle vertical feed structure (1), a spindle horizontal movement structure (2), a spindle self-rotation conductive structure (3), a spindle yaw platform (4), a machine tool crossbeam column (5), a translation and rotation conductive worktable (6) and a machine tool base (7) arranged on the machine tool body. The spindle vertical feed structure (1) and the spindle horizontal movement structure (2) can control the translation movement of the spindle. The spindle self-rotation conductive structure (3) and the translation and rotation conductive worktable (6) can be respectively connected to the negative and positive poles of the power supply to form a conductive path for electrochemical machining. The spindle yaw platform (4) can control the yaw angle of the spindle. The spindle self-rotation conductive structure (3) can install a conductive grinding wheel for mechanical grinding machining.

2. The electrolytic grinding machine tool for an aeroengine honeycomb seal ring according to claim 1, wherein: The machine tool body includes a machine tool crossbeam column (5) and a machine tool base (7) made of marble. The machine tool crossbeam column (5) is installed on the machine tool base (7).

3. An electrolytic grinding machine tool for an aeroengine honeycomb seal ring according to claim 2, characterized in that: The spindle vertical feed structure (1) includes a Z-axis stepper motor (8), a Z-axis support frame (9), and a Z-axis lead screw (10); Among them, the Z-axis stepper motor (8) is fixedly installed on the top of the Z-axis support frame (9). The Z-axis lead screw (10) is fixed to the output end of the Z-axis stepper motor (8). A Z-axis slider (100) is threadedly connected to the Z-axis lead screw (10). The spindle yaw platform 4 is fixed to the Z-axis slider (100).

4. An electrolytic grinding machine tool for an aeroengine honeycomb seal ring according to claim 3, characterized in that: The spindle horizontal movement structure (2) includes an X-axis crossbeam guide rail (11), an X-axis stepper motor (12), an X-axis lead screw (13) and an X-axis horizontal guide rail (14); Among them, the X-axis crossbeam guide rail (11) is fixed to the top of the machine tool crossbeam column (5). The X-axis horizontal guide rail (14) is fixed to one side of the machine tool crossbeam column (5). The X-axis stepper motor (12) is fixedly installed on the machine tool crossbeam column (5). The X-axis lead screw (13) is fixed to the output end of the X-axis stepper motor (12). An X-axis slider (200) is threadedly connected to the X-axis lead screw (13). Both the X-axis crossbeam guide rail (11) and the X-axis horizontal guide rail (14) are slidably connected to the X-axis slider (200). The Z-axis support frame (9) is fixed to the X-axis slider (200).

5. An electrolytic grinding machine tool for an aeroengine honeycomb seal ring according to claim 3, characterized in that: The spindle self-rotation conductive structure (3) includes a conductive slip ring (29), a spindle (38), a spindle rotation stepper motor (21), a spindle housing (22) and a conductive grinding wheel (36); Among them, the top of the spindle (38) is located inside the spindle housing (22). The spindle rotation stepper motor (21) is fixedly installed on the top of the spindle housing (22). A stepper motor synchronous pulley (23) is fixedly connected to the output end of the spindle rotation stepper motor (21). A spindle synchronous pulley (24) is fixedly connected to the outer surface of the spindle (38). The spindle synchronous pulley (24) and the stepper motor synchronous pulley (23) are connected by belt drive.

6. An electrolytic grinding machine tool for an aeroengine honeycomb seal ring according to claim 5, characterized in that: An inner bearing insulation sleeve (27) is fixedly connected inside the spindle housing (22). A bearing support (25) is fixedly installed on the bearing insulation sleeve (27). An angular contact ball bearing (26) is installed on the bearing support (25). The bearing insulation sleeve (27) is rotatably connected to the spindle (38) through the angular contact ball bearing (26); A conductive slip ring (29) and a spindle junction box (28) are installed on the spindle housing (22). A brush (30) is installed inside the conductive slip ring (29). The conductive slip ring (29) conducts current to the spindle (38) through the internal brush (30); the conductive slip ring (29) is connected to the negative pole of the power supply through the spindle junction box (28). A spindle end bearing insulating sleeve (39) is fixedly installed at the bottom of the spindle housing (22). A spindle end bearing support (33) is installed inside the spindle end bearing insulating sleeve (39). A spindle end angular contact ball bearing (34) is installed on the spindle end bearing support (33). The end of the spindle (38) is rotatably connected to the spindle housing (22) through the spindle end angular contact ball bearing (34).

7. An electrolytic grinding machine tool for an aero-engine honeycomb seal ring according to claim 6, characterized in that: A conductive grinding wheel (36) is fixedly installed at the bottom of the spindle (38) through a locking nut (37). A nozzle adapter pipe (32) is fixedly installed on one side of the spindle housing (22). An electrolyte pipe interface (31) is fixedly connected to the top of the nozzle adapter pipe (32). An electrolyte nozzle (35) is fixedly connected to the bottom of the nozzle adapter pipe (32).

8. An electrolytic grinding machine tool for an aeroengine honeycomb seal ring according to claim 5, characterized in that: The spindle yaw platform (4) includes a spindle yaw housing (401). A spindle yaw turbine (403) is rotatably connected inside the spindle yaw housing (401). A spindle yaw ring (404) is fixedly connected to one side of the spindle yaw turbine (403). A spindle yaw stepping motor (20) is fixedly installed outside the spindle yaw housing (401). The output end of the spindle yaw stepping motor (20) extends into the spindle yaw housing (401) and is fixedly connected to a spindle yaw worm (402). The spindle yaw worm (402) meshes with the spindle yaw turbine (403). The spindle yaw housing (401) is fixed to the Z-axis slider (100) through spindle housing mounting screws (40). The spindle housing (22) is fixed to the spindle yaw ring (404) of the spindle yaw platform (4) through spindle turntable mounting screws (41). A bearing end cover (43) is fixedly installed on the spindle housing (22). A deep groove ball bearing (42) is fixedly installed on the bearing end cover (43). The bearing housing (22) is rotatably connected to the spindle (38) through the deep groove ball bearing (42).

9. An electrolytic grinding machine tool for an aeroengine honeycomb seal ring according to claim 2, characterized in that: The translation and rotation conductive workbench (6) includes a workpiece pressing plate (47), a plastic water baffle (48), a honeycomb sealing ring (49), a workpiece mounting base (50), an insulating plate (51) and a workbench (55). Among them, a workbench translation stepping motor (19) and a workbench guide rail (17) are fixedly connected to the machine tool base (7). The output end of the workbench translation stepping motor (19) is rotatably connected to a workbench lead screw (18). A workbench slider (54) is threadedly connected to the workbench lead screw (18). The top of the workbench slider (54) is fixedly connected to a workbench (55). The workbench (55) is slidably connected to the workbench guide rail (17).

10. An electrolytic grinding machine tool for an aeroengine honeycomb seal ring according to claim 9, characterized in that: A support column is rotatably connected to the workbench (55), the top of the support column is fixedly connected to an insulating plate (51), the top of the insulating plate (51) is fixedly connected to a workpiece mounting base (50), the outer surface of the support column is fixedly connected to a workbench rotation worm gear (53), the workbench (55) is fixedly installed with a workbench rotation stepping motor (15), the output end of the workbench rotation stepping motor (15) is fixedly connected to a workbench rotation worm (52), and the workbench rotation worm (52) meshes with the workbench rotation worm gear (53); The top of the workpiece mounting base (50) is fixedly connected to a plastic water baffle (48), a workpiece pressing plate (47) is arranged on the top of the workpiece mounting base (50), a honeycomb sealing ring (49) is arranged on the workpiece mounting base (50), and the workpiece pressing plate (47) is used for fixing the honeycomb sealing ring (49).

Images