Aviation part grinding and polishing device

Abstract

The invention discloses an aviation part grinding and polishing device, and relates to the technical field of grinding. The problem of reducing is solved. The polishing device specifically comprises a base, the top of the base is connected with a lifting seat through a lifting control mechanism, and a polishing head is arranged on one side of the lifting seat; the grinding head comprises a rotating cylinder, a transverse moving plate rotationally connected to the end face of the rotating cylinder and a plurality of sliding rods slidably connected to the side wall of the rotating cylinder in the radial direction, and grinding assemblies used for grinding are arranged at the ends of the sliding rods. The grinding head further comprises a rotating shaft and a transition plate which can be connected to the inner wall of the rotating cylinder only in an axial sliding mode. According to the grinding device, the multiple sliding rods are arranged, the grinding abrasive paper is driven to make contact with the interior of the turbine shell through centrifugal force borne by rotation of the balancing weight, so that the turbine shell with the unbalanced inner diameter can be reliably ground, in the grinding process, the grinding pressure can be controlled through the rotating speed, and the grinding effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of grinding, and in particular to a grinding and polishing device for aviation parts. Background Art

[0002] Turbine engines are widely used in aircraft. For turbine engines, the outer turbine casing plays a protective and supporting role. When manufacturing the turbine casing, its inner surface needs to be ground and polished, and then treated with anti-corrosion and high-temperature resistant coatings to ensure its inner surface is smooth and reduce the friction between the jet gas and the surface of the turbine casing.

[0003] For example, after searching, the Chinese patent publication number CN106625161B discloses a grinding and polishing device and a grinding and polishing method, including a supporting part; a grinding and polishing part, which is used to grind and polish a workpiece, and the grinding and polishing part can be movably arranged on the supporting part. The grinding and polishing part can adjust its relative position with the supporting part according to the force exerted on it by the workpiece, so that the grinding and polishing part contacts the workpiece for grinding and polishing.

[0004] The above patent has the following shortcomings: it uses soft limit to achieve the characteristic of constant grinding pressure, but when it grinds the inner surface of the turbine housing, since the cross-sectional profile of the turbine housing is a curve, its overall shape is not a standard cylinder, which makes the radius along its axis change. This makes it impossible to quickly compensate for the position according to the change in radius during grinding, and thus it is impossible to achieve constant pressure grinding of the variable diameter curved surface.

[0005] To this end, the present invention provides an aviation parts grinding and polishing device. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an aviation parts grinding and polishing device.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: An aviation parts grinding and polishing device comprises a base, The top of the base is connected to a lifting seat through a lifting control mechanism, and a grinding head is arranged on one side of the lifting seat; The grinding head comprises a rotating cylinder, a transverse plate rotatably connected to the end surface of the rotating cylinder, and a plurality of sliding rods radially slidably connected to the side wall of the rotating cylinder, and a grinding assembly for grinding is arranged at the end of the sliding rod; The grinding head also includes a rotating shaft and a transition plate that can only be axially slidably connected to the inner wall of the rotating cylinder. The rotating shaft is connected to the transition plate through a speed change transmission mechanism, and the inner side of the slide rod is connected to the transition plate through a linkage assembly. The slide rod can adjust the position of the transition plate through the linkage assembly, thereby adjusting the transmission ratio of the speed change transmission mechanism.

[0008] Preferably, the grinding assembly comprises a counterweight fixed to the end of the sliding rod, a grinding plate fixed to the other side of the counterweight, and grinding sandpaper arranged on the outside of the grinding plate.

[0009] Furthermore, the outer surface of the grinding plate has a projection profile on a horizontal plane and a projection profile on a vertical plane that are both hyperbolas.

[0010] On the basis of the above scheme: the linkage assembly is composed of a plurality of limit blocks, the limit blocks are fixedly mounted on the side walls of the transition plate, the inner walls of the limit blocks are provided with limit grooves, and the slide rod is movably limited and matched with the inner wall of the limit groove through a limit rod fixedly mounted on the inner wall thereof.

[0011] A better solution among the aforementioned solutions is: the speed change transmission mechanism includes an elastic telescopic support rod, a cone barrel and a cone wheel, the cone barrel is fixed to the side wall of the transition plate, and the cone barrel is transmitted to the cone wheel through an anti-slip groove arranged on its inner wall, the cone wheel is rotatably connected to one side of the elastic telescopic support rod, the other end of the elastic telescopic support rod is rotatably connected to the outer wall of the rotating shaft, and its end face is fixed to the side wall of the transverse plate through a connecting tube.

[0012] As a further solution of the present invention: a transmission wheel 2 is fixed on the top of the cone wheel, a transmission wheel 1 is fixed on the bottom of the rotating shaft, and the transmission wheel 1 and the transmission wheel 2 are matched with each other through a transmission tensioning assembly.

[0013] At the same time, a motor 1 is fixedly installed on the side wall of the lifting seat, and the output shaft of the motor 1 is connected to the hollow shaft through a key. A transmission protrusion is arranged on the inner wall of the hollow shaft, and the rotating shaft is loosely matched with the transmission protrusion through a transmission groove opened on its outer wall.

[0014] As a preferred embodiment of the present invention: the inner wall of the lifting seat is connected with a plurality of screw rods through threads, and the ends of the screw rods are rotatably connected to the side walls of the transverse plate.

[0015] At the same time, an outer cylinder is fixed to the outer wall of the rotating cylinder, and a plurality of gears are meshed on the inner side of the outer cylinder. The plurality of gears are respectively connected to the outer walls of the plurality of screws through keys.

[0016] As a better solution of the present invention: the lifting control mechanism includes a bidirectional lead screw rotatably connected to the bottom of the slide and two opposing sliders, the slider is slidably connected to the inner side of the slide through a guide rod, and the slide is connected to the outer wall of the bidirectional lead screw through a thread, the top outer wall of the slide is rotatably connected to the inner wall of the lifting seat through a connecting rod, and the side wall of the slide is fixedly installed with motor 2, and the output shaft of motor 2 is connected to the end face of the bidirectional lead screw through a coupling.

[0017] The beneficial effects of the present invention are: 1. The present invention, by arranging a plurality of sliding rods, drives the grinding sandpaper to contact the inside of the turbine housing through the centrifugal force exerted on the rotating counterweight block, so that the turbine housing with uneven inner diameter can be reliably ground, and during the grinding process, the grinding pressure can be controlled by the rotation speed to ensure the grinding effect.

[0018] 2. The present invention can ensure that the outer contour of the grinding plate is in close contact with the contour of the grinding sandpaper by designing the outer contour of the grinding plate, and then utilize the certain flexibility of the grinding plate itself to ensure that it can be in close contact with the inner wall of the turbine housing over a large area when subjected to grinding pressure, thereby ensuring the grinding effect.

[0019] 3. The present invention, by setting a speed-changing transmission mechanism, can utilize the matching position of the cone barrel and the cone wheel to realize the change of the transmission ratio, thereby changing the rotation speed of the cone wheel, thereby balancing the change of the grinding pressure caused by the change of the radius, so as to achieve constant grinding pressure and ensure the grinding effect. In addition, by setting a linkage component, it can synchronize the change of the transmission ratio of the cone barrel and the cone wheel with the change of the slide bar position, thereby achieving the purpose of adaptive automatic adjustment.

[0020] 4. The present invention, based on the use of a screw to drive the transverse movement of the transverse plate, uses an outer cylinder and a gear to link the rotation of the rotating cylinder with the rotation of the screw. On the one hand, it can reduce the layout of the power source, and on the other hand, their mutual linkage can also make the grinding speed of the rotating cylinder match its axial speed, thereby preventing over-grinding and inadequate grinding, and further increasing the grinding effect.

[0021] 5. The present invention provides a lifting control mechanism, which can change the height of the lifting seat through the movement of the slider combined with the connection of the connecting rod, thereby changing the axis height of the grinding head, so that targeted adjustment can be made according to the actual fixed height of the turbine housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an aviation parts grinding and polishing device proposed by the present invention; Figure 2 A schematic diagram of the structure of a grinding head of an aviation parts grinding and polishing device proposed by the present invention; Figure 3A schematic cross-sectional view of the structure of a grinding head of an aviation parts grinding and polishing device proposed by the present invention; Figure 4 This is a schematic diagram of the enlarged structure of part A of an aviation parts grinding and polishing device proposed by the present invention; Figure 5 This is a schematic diagram of the enlarged structure of part B of an aviation parts grinding and polishing device proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a speed-changing transmission mechanism of an aviation parts grinding and polishing device proposed by the present invention; Figure 7 A schematic cross-sectional view of the speed change transmission mechanism of an aviation parts grinding and polishing device proposed by the present invention; Figure 8 A partial cross-sectional structural schematic diagram of an aviation parts grinding and polishing device proposed by the present invention; Fig. 9 A schematic diagram of a screw installation structure of an aviation parts grinding and polishing device proposed by the present invention; Fig.10 This is a schematic diagram of the cross-sectional structure of the outer cylinder of an aviation parts grinding and polishing device proposed by the present invention; Fig.11 This is a schematic diagram of the structure of a lifting control mechanism of an aviation parts grinding and polishing device proposed by the present invention.

[0023] In the figure: 1-base, 2-lifting control mechanism, 3-lifting seat, 4-grinding head, 5-transverse plate, 6-rotating cylinder, 7-grinding assembly, 8-slide rod, 9-rotating shaft, 10-linkage assembly, 11-transition plate, 12-slide, 13-speed transmission mechanism, 14-counterweight, 15-grinding plate, 16-grinding sandpaper, 17-limit rod, 18-limit block, 19-limit groove, 20-connecting cylinder, 21-elastic telescopic support rod, 22-transmission wheel 1, 23-cone barrel, 24-anti-skid groove, 25-cone wheel, 26-transmission wheel 2, 27-transmission tensioning assembly, 28-hollow shaft, 29-motor 1, 30-transmission protrusion, 31-transmission groove, 32-screw, 33-gear, 34-outer cylinder, 35-slider, 36-motor 2, 37-bidirectional screw, 38-connecting rod. DETAILED DESCRIPTION

[0024] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] Embodiment 1: A grinding and polishing device for aviation parts, such as Figure 1-11 As shown, it includes a base 1, the top of the base 1 is connected to a lifting seat 3 through a lifting control mechanism 2, and a grinding head 4 is arranged on one side of the lifting seat 3.

[0027] The grinding head 4 includes a rotating cylinder 6, a transverse plate 5 rotatably connected to the end surface of the rotating cylinder 6, and a plurality of slide bars 8 radially slidably connected to the side wall of the rotating cylinder 6. The end of the slide bar 8 is provided with a grinding assembly 7 for grinding.

[0028] The grinding head 4 also includes a rotating shaft 9 and a transition plate 11 that is only axially slidably connected to the inner wall of the rotating cylinder 6. The rotating shaft 9 is connected to the transition plate 11 through a speed change transmission mechanism 13, and the inner side of the slide bar 8 is connected to the transition plate 11 through a linkage assembly 10. The slide bar 8 can adjust the position of the transition plate 11 through the linkage assembly 10, thereby adjusting the transmission ratio of the speed change transmission mechanism 13.

[0029] The grinding assembly 7 includes a counterweight 14 fixed to the end of the slide rod 8 , a grinding plate 15 fixed to the other side of the counterweight 14 , and a grinding sandpaper 16 arranged on the outside of the grinding plate 15 .

[0030] When the device is in use, the rotating cylinder 6 can be placed inside the turbine housing, and then the rotating shaft 9 rotates, which drives the transition plate 11 to rotate through the speed transmission mechanism 13, thereby driving the rotating cylinder 6 to rotate, so that the slide bar 8 and the grinding assembly 7 rotate along the rotating cylinder 6, and the counterweight block 14 moves outward due to the centrifugal force, so that the grinding sandpaper 16 contacts the inside of the turbine housing, thereby grinding, and even if the inner diameter of the housing changes, because the counterweight block 14 is subjected to the centrifugal "flexible force", it can always ensure that it fits the inner wall of the pipe, and the grinding pressure is controlled by the rotation speed.

[0031] The device is provided with a plurality of slide bars 8, and the centrifugal force exerted on the slide bars 8 by the rotation of the counterweight block 14 drives the grinding sandpaper 16 to contact the inside of the turbine housing, so that the turbine housing with uneven inner diameter can be reliably ground, and during the grinding process, the grinding pressure can be controlled by the rotation speed to ensure the grinding effect.

[0032] To solve the problem of fit; Figure 4As shown, the outer surface of the grinding plate 15 has a projection profile on a horizontal plane and a projection profile on a vertical plane that are both hyperbolic.

[0033] The device is designed specifically for the outer contour of the grinding plate 15, so as to ensure that it fits the contour of the grinding sandpaper 16, and then utilizes the certain flexibility of the grinding plate 15 itself, so that when subjected to grinding pressure, it can ensure that it fits with a larger area of ​​the inner wall of the turbine housing, thereby ensuring the grinding effect.

[0034] In order to solve the problem of adaptive control of grinding pressure; Figure 3-7 As shown, the linkage assembly 10 is composed of a plurality of limit blocks 18, and the limit blocks 18 are fixed to the side walls of the transition plate 11 by bolts. The inner wall of the limit block 18 is provided with a limit groove 19, and the slide rod 8 is movably limited and engaged with the inner wall of the limit groove 19 through a limit rod 17 welded to its inner wall.

[0035] The speed change transmission mechanism 13 includes an elastic telescopic support rod 21, a cone barrel 23 and a cone wheel 25. The cone barrel 23 is fixed to the side wall of the transition plate 11, and the cone barrel 23 is transmitted and matched with the cone wheel 25 through the anti-skid groove 24 set on its inner wall. The cone wheel 25 is rotatably connected to one side of the elastic telescopic support rod 21, and the other end of the elastic telescopic support rod 21 is rotatably connected to the outer wall of the rotating shaft 9, and its end face is fixed to the side wall of the transverse plate 5 through the connecting tube 20.

[0036] A second transmission wheel 26 is fixed on the top of the cone wheel 25 , and a first transmission wheel 22 is fixed on the bottom of the rotating shaft 9 . The first transmission wheel 22 and the second transmission wheel 26 are matched with each other through a transmission tensioning assembly 27 .

[0037] In this embodiment, the specific type of the transmission tensioning assembly 27 is not limited. It is intended to ensure that the transmission wheel 1 22 and the transmission wheel 2 26 can move relative to each other on the basis of transmission link. This can be achieved through a chain tensioning wheel or a belt tensioning wheel. The above are common knowledge of technicians in this field. This embodiment does not make creative work on it, so it will not be elaborated.

[0038] based on Figure 3 From the perspective, when the inner diameter of the turbine housing increases, the slide bar 8 moves outward. Since the grinding radius of the grinding assembly 7 increases at this time, if the speed remains unchanged, according to the centrifugal force formula It can be seen that the grinding pressure will increase, so when the slide rod 8 moves to the outside, the limit block 18 moves to the left through the cooperation of the limit block 18 and the limit groove 19, so that the transition plate 11 moves to the left, so that the cooperation position of the cone barrel 23 and the cone wheel 25 changes, and the cone wheel 25 is matched with the larger inner diameter of the cone barrel 23. Since the cone wheel 25 is driven by the rotating shaft 9 through the transmission wheel 22, the rotation speed of the rotating shaft 9 remains unchanged, resulting in a decrease in the rotation speed of the cone barrel 23, thereby reducing the overall rotation speed of the rotating cylinder 6, thereby balancing the grinding pressure of the grinding component 7 increased due to the increase in the outer diameter.

[0039] The device, by setting a speed-changing transmission mechanism 13, can utilize the matching position of the cone barrel 23 and the cone wheel 25 to realize the change of the transmission ratio, thereby changing the rotation speed of the cone wheel 25, thereby balancing the change of grinding pressure caused by the change of radius, so as to achieve constant grinding pressure and ensure the grinding effect. In addition, by setting a linkage component 10, it can synchronize the change of the transmission ratio of the cone barrel 23 and the cone wheel 25 with the change of the position of the slide bar 8, thereby achieving the purpose of adaptive automatic adjustment.

[0040] To solve the driver problem; Figure 8 As shown, the side wall of the lifting seat 3 is fixed with a motor 29 by bolts, the output shaft of the motor 29 is connected with a hollow shaft 28 by a key, the inner wall of the hollow shaft 28 is provided with a transmission protrusion 30, and the rotating shaft 9 is loosely fitted in the transmission protrusion 30 through a transmission groove 31 opened on its outer wall.

[0041] When the motor 29 is started, it can drive the hollow shaft 28 to rotate, thereby driving the rotating shaft 9 to rotate through the transmission protrusion 30 and the transmission groove 31, and the axial movement of the rotating shaft 9 can also be satisfied through the clearance fit between the transmission protrusion 30 and the transmission groove 31.

[0042] In order to solve the problem of all-round grinding; Fig. 9 As shown, the inner wall of the lifting seat 3 is connected with multiple screws 32 through threads, and the ends of the screws 32 are rotatably connected to the side walls of the transverse plate 5. When the screws 32 rotate, they can drive the transverse plate 5 to move, thereby driving the entire grinding head 4 to move axially along the inner wall of the turbine housing for all-round grinding.

[0043] An outer cylinder 34 is fixed to the outer wall of the rotating cylinder 6 , and a plurality of gears 33 are meshed on the inner side of the outer cylinder 34 . The plurality of gears 33 are respectively connected to the outer walls of the plurality of screw rods 32 through keys.

[0044] When the rotating cylinder 6 rotates and grinds, it rotates relative to the transverse plate 5, so that the outer cylinder 34 rotates relative to the gear 33, and the screw rod 32 can be driven to rotate through the gear 33.

[0045] This device, based on the use of the screw 32 to drive the transverse plate 5 to move laterally, uses the outer cylinder 34 and the gear 33 to link the rotation of the rotating cylinder 6 with the rotation of the screw 32. On the one hand, it can reduce the layout of the power source. On the other hand, their mutual linkage can also make the grinding speed of the rotating cylinder 6 match its axial speed, preventing over-grinding and inadequate grinding, and further increasing the grinding effect.

[0046] When the present embodiment is in use, the turbine housing to be polished is coaxially arranged on one side of the polishing head 4, and one end of the turbine housing is placed on the outside of the polishing assembly 7, and then the motor 1 29 is started, which drives the hollow shaft 28 to rotate, thereby driving the rotating shaft 9 to rotate through the transmission protrusion 30 and the transmission groove 31, and then drives the transmission wheel 1 22 to rotate, and then drives the transmission wheel 2 26 to rotate through the transmission tensioning assembly 27, thereby driving the transition plate 11 to rotate, thereby driving the rotating cylinder 6 to rotate, and driving multiple slide bars 8 to rotate synchronously. When the slide bar 8 drives the polishing assembly 7 to rotate, the limit rod 17 is moved outward by the centrifugal force until the polishing sandpaper 16 fits the inner surface of the turbine housing to achieve polishing, and when the rotating cylinder 6 rotates for polishing, it rotates relative to the transverse plate 5, so that the outer cylinder 34 rotates relative to the gear 33, so that the screw 32 can be driven to rotate through the gear 33, thereby driving the entire polishing head 4 to move axially along the inner wall of the turbine housing for all-round polishing, and based on the Figure 3 From the perspective, when the inner diameter of the turbine housing increases, the slide bar 8 moves outward. Since the grinding radius of the grinding assembly 7 increases at this time, if the speed remains unchanged, according to the centrifugal force formula It can be seen that the grinding pressure will increase, so when the slide rod 8 moves to the outside, the limit block 18 moves to the left through the cooperation of the limit block 18 and the limit groove 19, so that the transition plate 11 moves to the left, so that the cooperation position of the cone barrel 23 and the cone wheel 25 changes, and the cone wheel 25 is matched with the larger inner diameter of the cone barrel 23. Since the cone wheel 25 is driven by the rotating shaft 9 through the transmission wheel 22, the rotation speed of the rotating shaft 9 remains unchanged, resulting in a decrease in the rotation speed of the cone barrel 23, thereby reducing the overall rotation speed of the rotating cylinder 6, thereby balancing the grinding pressure of the grinding component 7 increased due to the increase in the outer diameter.

[0047] Embodiment 2: A grinding and polishing device for aviation parts, such as Fig.11As shown, in order to solve the matching problem; this embodiment makes the following improvements on the basis of embodiment 1: the lifting control mechanism 2 includes a bidirectional screw rod 37 rotatably connected to the bottom of the slide 12 and two opposing sliders 35, the slider 35 is slidably connected to the inner side of the slide 12 through a guide rod, and the slide 12 is connected to the outer wall of the bidirectional screw rod 37 through a thread, the top outer wall of the slide 12 is rotatably connected to the inner wall of the lifting seat 3 through a connecting rod 38, the side wall of the slide 12 is fixed with a motor 2 36 by bolts, and the output shaft of the motor 2 36 is connected to the end face of the bidirectional screw rod 37 through a coupling.

[0048] When the present embodiment is in use, when the fixed height of the worm gear housing changes, the second motor 36 can be started, which drives the bidirectional screw rod 37 to rotate, thereby driving the two sliders 35 to move synchronously in opposite directions, thereby changing the height of the lifting seat 3 through the connecting rod 38.

[0049] The device is provided with a lifting control mechanism 2, which can change the height of the lifting seat 3 through the movement of the slider 35 combined with the connection of the connecting rod 38, thereby changing the axis height of the grinding head 4, so that targeted adjustment can be made according to the actual fixed height of the turbine housing.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An aviation parts grinding and polishing device, comprising a base (1), characterized in that: The top of the base (1) is connected to a lifting seat (3) via a lifting control mechanism (2), and a grinding head (4) is provided on one side of the lifting seat (3); The grinding head (4) comprises a rotating cylinder (6), a transverse plate (5) rotatably connected to the end surface of the rotating cylinder (6), and a plurality of sliding rods (8) radially slidably connected to the side wall of the rotating cylinder (6), and a grinding assembly (7) for grinding is provided at the end of the sliding rod (8); The grinding head (4) further comprises a rotating shaft (9) and a transition plate (11) which is connected to the inner wall of the rotating cylinder (6) in an axially sliding manner only. The rotating shaft (9) is connected to the transition plate (11) through a speed change transmission mechanism (13), and the inner side of the slide bar (8) is connected to the transition plate (11) through a linkage assembly (10). The slide bar (8) can adjust the position of the transition plate (11) through the linkage assembly (10), thereby adjusting the transmission ratio of the speed change transmission mechanism (13).

2. The aviation parts grinding and polishing device according to claim 1, characterized in that: The grinding assembly (7) comprises a counterweight (14) fixed to the end of the sliding rod (8), a grinding plate (15) fixed to the other side of the counterweight (14), and grinding sandpaper (16) arranged on the outside of the grinding plate (15).

3. The aviation parts grinding and polishing device according to claim 2, characterized in that: The outer surface of the grinding plate (15) has a projection profile on a horizontal plane and a projection profile on a vertical plane that are both hyperbolic.

4. An aviation parts grinding and polishing device according to claim 2 or 3, characterized in that: The linkage assembly (10) is composed of a plurality of limit blocks (18), wherein the limit blocks (18) are fixedly mounted on the side walls of the transition plate (11), and the inner walls of the limit blocks (18) are provided with limit slots (19), and the slide bar (8) is movably limited and engaged with the inner wall of the limit slot (19) through a limit rod (17) fixedly mounted on the inner wall of the slide bar (8).

5. The aviation parts grinding and polishing device according to claim 4, characterized in that: The speed change transmission mechanism (13) comprises an elastic telescopic support rod (21), a cone barrel (23) and a cone wheel (25); the cone barrel (23) is fixed to the side wall of the transition plate (11), and the cone barrel (23) is transmission-matched with the cone wheel (25) through an anti-skid groove (24) provided on the inner side wall thereof; the cone wheel (25) is rotationally connected to one side of the elastic telescopic support rod (21); the other end of the elastic telescopic support rod (21) is rotationally connected to the outer wall of the rotating shaft (9), and its end surface is fixed to the side wall of the transverse plate (5) through a connecting tube (20).

6. The aviation parts grinding and polishing device according to claim 5, characterized in that: A second transmission wheel (26) is fixed on the top of the cone wheel (25), and a first transmission wheel (22) is fixed on the bottom of the rotating shaft (9). The first transmission wheel (22) and the second transmission wheel (26) are matched in transmission via a transmission tensioning assembly (27).

7. The aviation parts grinding and polishing device according to claim 1, characterized in that: A motor 1 (29) is fixedly mounted on the side wall of the lifting seat (3); the output shaft of the motor 1 (29) is connected to the hollow shaft (28) via a key; a transmission protrusion (30) is provided on the inner side wall of the hollow shaft (28); and the rotating shaft (9) is loosely fitted in the transmission protrusion (30) via a transmission groove (31) provided on the outer side wall thereof.

8. The aviation parts grinding and polishing device according to claim 1, characterized in that: The inner wall of the lifting seat (3) is connected to a plurality of screw rods (32) via threads, and the ends of the screw rods (32) are rotatably connected to the side wall of the transverse plate (5).

9. The aviation parts grinding and polishing device according to claim 8, characterized in that: An outer cylinder (34) is fixed to the outer wall of the rotating cylinder (6), and a plurality of gears (33) are meshed on the inner side of the outer cylinder (34). The plurality of gears (33) are respectively connected to the outer walls of the plurality of screw rods (32) via keys.

10. The aviation parts grinding and polishing device according to claim 1, characterized in that: The lifting control mechanism (2) comprises a bidirectional lead screw (37) rotatably connected to the bottom of the slide (12) and two opposing sliders (35), wherein the slider (35) is slidably connected to the inner side of the slide (12) via a guide rod, and the slide (12) is connected to the outer wall of the bidirectional lead screw (37) via a thread, and the top outer wall of the slide (12) is rotatably connected to the inner wall of the lifting seat (3) via a connecting rod (38), and a second motor (36) is fixedly mounted on the side wall of the slide (12), and the output shaft of the second motor (36) is connected to the end face of the bidirectional lead screw (37) via a coupling.

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