Aero-engine blade off-position grinding clamping table
By designing an off-position grinding clamping table suitable for aircraft engine blades, the problems of unfit, poor versatility and high labor costs in the prior art are solved, and stable clamping and efficient grinding of different models of blades are achieved.
Patent Information
- Application Number
- CN202421129034.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The prior art has problems such as inadequate clamping, poor versatility, insufficient strength due to manual fatigue and high labor costs during the off-position grinding of aircraft engine blades.
An aircraft engine blade off-position grinding clamping table is designed, including a machine, a low-position clamp assembly and a high-position backrest assembly. By adjusting the steering and position of the low-position clamping seat and the high-position clamping seat, combined with the use of U-shaped clamping and suction cups, stable clamping of the engine blades is achieved.
The clamping table is able to adapt to different models and sizes of engine blades, providing more stable clamping, reducing labor costs and improving efficiency.
Smart Images
Figure CN222493740U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ground maintenance of aircraft, in particular to an off-site grinding and clamping platform for blades of an aero-engine. Background Art
[0002] During the regular inspection of the aircraft, if the aircraft engine fan blades are found to be corroded or worn, the engine blades must be removed for off-site grinding. In the past, when grinding the engine blades, manual clamping or special auxiliary fixtures were usually used to fix the engine blades. The previous clamping methods had many defects:
[0003] 1. The curvature or radius of the fixing fixture is not compatible with the engine blades, and forced clamping can easily cause scratches on the engine blades;
[0004] 2. Some auxiliary fixtures specially made based on experience are only suitable for a certain type of engine blades, not for blades of different models and sizes, and have poor versatility;
[0005] 3. Manual clamping is prone to fatigue, resulting in insufficient force, which can easily cause the blade to slip out and be damaged;
[0006] 4. The entire grinding process requires the cooperation of multiple people, some of whom are responsible for supporting the engine blades, and some of whom are responsible for grinding the blades. The labor cost is high, it is time-consuming and labor-intensive, and the efficiency is low. Utility Model Content
[0007] In view of the deficiencies in the prior art, the utility model provides an off-site grinding and clamping table for aircraft engine blades to overcome the deficiencies in the prior art.
[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0009] An off-site grinding and clamping table for aircraft engine blades comprises a machine table, a pair of low-position clamping assemblies arranged at intervals on the front side of the machine table, and a high-position back-supporting assembly arranged on the rear side of the machine table.
[0010] The machine platform has a pair of low-position assembly grooves arranged at intervals on the front side, and a high-position assembly groove is arranged on the rear side of the machine platform; the low-position assembly groove and the high-position assembly groove are arranged along the front-to-back direction of the machine platform, and the low-position assembly groove passes through the front side of the machine platform toward the front side, and the high-position assembly groove passes through the rear side of the machine platform toward the rear side;
[0011] The low-position clamp assembly comprises a low-position clamp seat, a low-position U-shaped clamp and a pair of low-position cam locking members; the low-position clamp seat is installed in the low-position assembly groove, the low-position U-shaped clamp is arranged at the center of the top surface of the low-position clamp seat, and the low-position cam locking members are respectively arranged on both sides of the low-position U-shaped clamp;
[0012] The low-position clamping seat comprises a low-position table top clamping plate, a low-position table bottom clamping plate and a low-position cylindrical connecting rod fixedly connected between the low-position table top clamping plate and the low-position table bottom clamping plate.
[0013] The low-position U-shaped clamp includes a left-side clamp and a right-side clamp that are integrally assembled into a U shape; the left-side clamp is fixed to the low-position table clamp of the low-position clamp seat; the left-side clamp and the right-side clamp are correspondingly provided with U-shaped clamp locking holes, and the U-shaped clamp locking bolts are provided in the U-shaped clamp locking holes.
[0014] Furthermore, the high-position back support assembly includes a high-position clamping seat, a high-position backrest member and a pair of high-position cam locking members; the high-position clamping seat is installed in the high-position assembly groove, the high-position backrest member is arranged at the center of the top surface of the high-position clamping seat, and the high-position cam locking members are respectively arranged on both sides of the high-position backrest member;
[0015] The high-position clamping seat includes a high-position table top clamping plate, a high-position table bottom clamping plate and a high-position cylindrical connecting rod fixedly connected between the high-position table top clamping plate and the high-position table bottom clamping plate; the high-position backrest member includes an L-shaped backrest plate, which is fixed on the high-position table top clamping plate of the high-position clamping seat.
[0016] Furthermore, a universal ball seat is fixedly provided on the top of the L-shaped support plate, a suction cup is installed on the universal ball seat, a pressurizing one-way valve and a pressure-releasing one-way valve are provided on the suction cup, and the pressurizing one-way valve is connected to the air pump through an air pipe.
[0017] Furthermore, the low-position cam locking member includes a low-position cam shaft, which is rotatably mounted on one end of a low-position table clamp of a low-position clamp seat in a horizontal direction, and a low-position cam handle is fixedly mounted on the low-position cam shaft.
[0018] Furthermore, the high-position cam locking member includes a high-position camshaft, which is rotatably mounted on one end of a high-position table clamp of a high-position clamp seat in a horizontal direction, and a high-position cam handle is fixedly mounted on the high-position camshaft.
[0019] Preferably, the length of the low-position cylindrical connecting rod is adapted to the thickness of the machine platform, and the diameter of the low-position cylindrical connecting rod is adapted to the width of the low-position assembly groove.
[0020] Preferably, the length of the high-position cylindrical connecting rod is adapted to the thickness of the machine platform, and the diameter of the high-position cylindrical connecting rod is adapted to the width of the high-position assembly groove.
[0021] Preferably, a slider is provided on one end of the left clamping plate protruding toward the right clamping plate; the right clamping plate is slidably arranged on the slider of the left clamping plate, and a sliding groove is provided at the bottom of the right clamping plate to adapt to the slider.
[0022] Compared with the prior art, the beneficial effects of the utility model are:
[0023] 1) The off-site grinding and clamping table for aircraft engine blades in this case adjusts the direction of the low-position clamp or the high-position clamp by rotating, adjusts the front and rear positions of the low-position clamp or the high-position clamp, adjusts the spacing of the U-shaped clamp, and adjusts the direction of the suction cup and the spacing between the suction cup and the blade, so that the clamping position of the U-shaped clamp is suitable for the arc or curvature of the low position of the engine blade, and the suction cup can be tightly adsorbed on the high position of the engine blade, so that the engine blade is clamped and supported more firmly.
[0024] 2) The aircraft engine blade off-site grinding and clamping table of this case has a low-position assembly groove that penetrates the front side of the machine toward the front side, and a high-position assembly groove that penetrates the rear side of the machine toward the rear side, which is conducive to the disassembly, assembly or replacement of the entire set of low-position fixture components or high-position back-support components, and is convenient for replacing low-position fixture components or high-position back-support components of different sizes to match different models of engine blades, thereby enhancing the applicability of the fixture table of this case.
[0025] In order to more clearly understand the present invention, the following will describe the preferred implementation modes of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 , Figure 2 This is a reference diagram of the use state of the utility model;
[0027] Figure 3 It is a schematic diagram of the overall structure of the utility model;
[0028] Figure 4 It is a structural schematic diagram of the low-position clamp assembly of the utility model;
[0029] Figure 5 It is a structural schematic diagram of the high-position back support assembly of the utility model.
[0030] Figure ID:
[0031] 1-machine table, 2-low-position fixture assembly, 3-high-position back support assembly; 11-low-position assembly slot, 12-high-position assembly slot; 21-low-position clamp seat, 22-low-position U-shaped clamp, 23-low-position cam locking piece; 211-low-position table top clamp, 212-low-position table bottom clamp, 213-low-position cylindrical connecting rod; 221-left clamp, 222-right clamp, 223-slider, 224-slideway, 225-U-shaped clamp locking bolt ; 231- low position camshaft, 232- low position cam handle; 31- high position clamp seat, 32- high position backrest, 33- high position cam locking member; 311- high position table top clamp plate, 312- high position table bottom clamp plate, 313- high position cylindrical connecting rod; 321- L-type back plate, 322- universal ball seat, 323- suction cup, 324- air pump; 331- high position camshaft, 332- high position cam handle; 9- engine blades. DETAILED DESCRIPTION
[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0033] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes, mainly to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components, and cannot be understood as indicating or implying relative importance.
[0034] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.
[0035] Please also see Figure 1-5 The utility model provides an off-site grinding and clamping platform for aircraft engine blades, comprising a machine platform 1, a pair of low-position clamp assemblies 2 arranged at intervals on the front side of the machine platform 1, and a high-position back-support assembly 3 arranged on the rear side of the machine platform 1; the low-position clamp assembly 2 clamps and supports the engine blade 9 from the bottom, and the high-position back-support assembly 3 fixes and supports the upper part of the engine blade 9 from the back, and the engine blade 9 is erected on the machine platform 1 by a three-point positioning method, which is convenient for blade grinding work.
[0036] The machine 1 has a pair of low-position assembly grooves 11 arranged at intervals on the front side for assembling a pair of low-position clamp assemblies 2, and a high-position assembly groove 12 arranged on the rear side of the machine 1 for assembling a high-position back support assembly 3; the low-position assembly grooves 11 and the high-position assembly grooves 12 are both arranged along the front and rear directions of the machine 1, and the low-position assembly grooves 11 penetrate the front side surface of the machine 1 toward the front side, and the high-position assembly grooves 12 penetrate the rear side surface of the machine 1 toward the rear side.
[0037] The low-position clamp assembly 2 includes a low-position clamp seat 21, a low-position U-shaped clamp 22 and a pair of low-position cam locking members 23; the low-position clamp seat 21 is installed in the low-position assembly groove 11, the low-position U-shaped clamp 22 is arranged at the center of the top surface of the low-position clamp seat 21, and the low-position cam locking members 23 are respectively arranged on both sides of the low-position U-shaped clamp 22.
[0038] The low-position clamp seat 21 includes a low-position table top clamp plate 211, a low-position table bottom clamp plate 212, and a low-position cylindrical connecting rod 213 fixedly connected between the low-position table top clamp plate 211 and the low-position table bottom clamp plate 212. The length of the low-position cylindrical connecting rod 213 is adapted to the thickness of the machine table 1, and the diameter of the low-position cylindrical connecting rod 213 is adapted to the width of the low-position assembly groove 11. In actual working conditions, the assembled low-position clamp assembly 2 has its low-position cylindrical connecting rod 213. Located in the low-position assembly groove 11 of the machine 1, the low-position table top clamp 211 is located on the top surface of the machine 1, and the low-position table bottom clamp 212 is located under the bottom surface of the machine 1. Since the low-position cylindrical connecting rod 213 is a cylinder, the low-position clamp seat 21 can be clamped on the low-position assembly groove 11 of the machine 1, and its deflection direction can be adjusted with the low-position cylindrical connecting rod 213 as the axis, so as to adapt to the different curvatures of different parts of the engine blades 9, making the clamping of the engine blades 9 more stable.
[0039] The low-position U-shaped clamp 22 includes a left-side clamp 221 and a right-side clamp 222 which are integrally combined into a U shape; the left-side clamp 221 is fixed on the low-position table clamp 211 of the low-position clamp seat 21, and a slider 223 is provided on one end of the left-side clamp 221 protruding toward the right-side clamp 222; the right-side clamp 222 is slidably arranged on the slider 223 of the left-side clamp 221, and a slide groove 224 is provided at the bottom of the right-side clamp 222 to adapt to the slider 223, so that the distance between the left-side clamp 221 and the right-side clamp 222 can be adjusted under the guidance of the slider 223 and the slide groove 224.
[0040] Furthermore, U-shaped clamp locking holes are correspondingly provided on the left clamp plate 221 and the right clamp plate 222, and U-shaped clamp locking bolts 225 are provided in the U-shaped clamp locking holes. The U-shaped clamp locking bolts 225 are used to lock the low-position U-shaped clamp 22 to adjust the width to a suitable one, so that the low-position U-shaped clamp 22 can adapt to engine blades 9 of different thicknesses, further improving the stability of the clamping of the engine blades 9.
[0041] The low-position cam locking member 23 includes a low-position cam shaft 231 , which is rotatably mounted horizontally on one end of the low-position table clamping plate 211 of the low-position clamping seat 21 , and a low-position cam handle 232 is fixedly mounted on the low-position cam shaft 231 .
[0042] The working principle of the low cam locking member 23 is:
[0043] The low-level cam handle 232 is pulled to rotate the low-level camshaft 231. When the small-radius surface of the low-level camshaft 231 does not contact the low-level table clamp 211 of the low-level clamp seat 21, the low-level clamp assembly 2 is in an unlocked state as a whole. At this time, the low-level clamp assembly 2 can move in the low-level assembly groove 11 of the machine table 1; when the surface of the low-level camshaft 231 with a gradually larger radius gradually contacts the low-level table clamp 211 of the low-level clamp seat 21, the low-level clamp assembly 2 is transformed into a locked state as a whole, thereby locking the adjusted low-level clamp assembly 2 on the machine table 1 and clamping the engine blade 9.
[0044] The high-position back support assembly 3 includes a high-position clamping seat 31, a high-position backrest member 32 and a pair of high-position cam locking members 33; the high-position clamping seat 31 is installed in the high-position assembly groove 12, the high-position backrest member 32 is arranged in the center of the top surface of the high-position clamping seat 31, and the high-position cam locking members 33 are respectively arranged on both sides of the high-position backrest member 32.
[0045] The high-position clamp seat 31 includes a high-position table top clamp plate 311, a high-position table bottom clamp plate 312, and a high-position cylindrical connecting rod 313 fixedly connected between the high-position table top clamp plate 311 and the high-position table bottom clamp plate 312. The length of the high-position cylindrical connecting rod 313 is adapted to the thickness of the machine table 1, and the diameter of the high-position cylindrical connecting rod 313 is adapted to the width of the high-position assembly groove 12. In actual working conditions, the high-position cylindrical connecting rod 313 of the assembled high-position back support assembly 3 is Located in the high-position assembly groove 12 of the machine 1, the high-position table top clamp 311 is located on the top surface of the machine 1, and the high-position table bottom clamp 312 is located under the bottom surface of the machine 1. Since the high-position cylindrical connecting rod 313 is a cylinder, the high-position clamp seat 31 can be clamped on the high-position assembly groove 12 of the machine 1, and its deflection direction can be adjusted with the high-position cylindrical connecting rod 313 as the axis, which is convenient for adapting to the different curvatures of different parts of the engine blades 9, making the clamping of the engine blades 9 more stable.
[0046] The high-position backrest member 32 includes an L-shaped backrest plate 321 , and the L-shaped backrest plate 321 is fixed on the high-position table clamping plate 311 of the high-position clamping seat 31 .
[0047] Furthermore, a universal ball seat 322 is fixedly provided on the top of the L-shaped support plate 321, and a suction cup 323 is installed on the universal ball seat 322. A pressurization check valve and a pressure relief check valve are provided on the suction cup 323. The pressurization check valve is connected to the vacuum pump 324 through an air pipe. The pressurization check valve is used to vacuum the suction cup, and the pressure relief check valve is used to relieve pressure on the suction cup.
[0048] The high-position cam locking member 33 comprises a high-position cam shaft 331, which is rotatably mounted on one end of the high-position table clamping plate 311 of the high-position clamping seat 31 in the horizontal direction, and a high-position cam handle 332 is fixedly mounted on the high-position cam shaft 331. In this embodiment, the working principle of the high-position cam locking member 33 is the same as that of the low-position cam locking member 23.
[0049] The working principle of the high back support assembly 3 is:
[0050] By adjusting the steering direction of the high-position clamp seat 31 and the universal ball seat 322, the adsorption surface of the suction cup 323 is made to be against the engine blade 9. By starting the vacuum pump 324, the suction cup 323 can be evacuated, so that the suction cup 323 is tightly adsorbed on the back side of the engine blade 9. Since the entire high-position back-support assembly 3 can be locked on the machine 1 by the high-position cam locking member 33, the back side and the top side of the engine blade 9 are both adsorbed and supported. The high-position back-support assembly 3 cooperates with the low-position clamp assembly 2, and the engine blade 9 is allowed to stand upright on the machine 1 through three-point positioning, which is convenient for blade grinding.
[0051] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. An off-site grinding and clamping platform for aircraft engine blades, comprising a platform (1), a pair of low-position clamping assemblies (2) arranged at intervals on the front side of the platform (1), and a high-position backing assembly (3) arranged on the rear side of the platform (1), characterized in that: The machine (1) has a pair of low-position assembly grooves (11) arranged at intervals on the front side thereof, and a high-position assembly groove (12) arranged on the rear side of the machine (1); the low-position assembly groove (11) and the high-position assembly groove (12) are arranged along the front-to-back direction of the machine (1), and the low-position assembly groove (11) penetrates the front side of the machine (1) toward the front side, and the high-position assembly groove (12) penetrates the rear side of the machine (1) toward the rear side; The low-position clamp assembly (2) comprises a low-position clamp seat (21), a low-position U-shaped clamp (22) and a pair of low-position cam locking members (23); the low-position clamp seat (21) is installed in the low-position assembly groove (11), the low-position U-shaped clamp (22) is arranged at the center of the top surface of the low-position clamp seat (21), and the low-position cam locking members (23) are respectively arranged on both sides of the low-position U-shaped clamp (22); The low-position clamping seat (21) comprises a low-position table top clamping plate (211) arranged in an I-shape, a low-position table bottom clamping plate (212), and a low-position cylindrical connecting rod (213) fixedly connected between the low-position table top clamping plate (211) and the low-position table bottom clamping plate (212); The low-position U-shaped clamp (22) comprises a left clamp plate (221) and a right clamp plate (222) which are integrally assembled into a U shape; the left clamp plate (221) is fixed on a low-position table clamp plate (211) of a low-position clamp seat (21); U-shaped clamp locking holes are correspondingly arranged on the left clamp plate (221) and the right clamp plate (222), and U-shaped clamp locking bolts (225) are arranged in the U-shaped clamp locking holes.
2. The off-site grinding and clamping platform for aircraft engine blades according to claim 1 is characterized by: The high-position back support assembly (3) comprises a high-position clamping seat (31), a high-position backrest member (32) and a pair of high-position cam locking members (33); the high-position clamping seat (31) is installed in the high-position assembly groove (12), the high-position backrest member (32) is arranged at the center of the top surface of the high-position clamping seat (31), and the high-position cam locking members (33) are respectively arranged on both sides of the high-position backrest member (32); The high-position clamping seat (31) comprises a high-position table top clamping plate (311) arranged in an I-shape, a high-position table bottom clamping plate (312) and a high-position cylindrical connecting rod (313) fixedly connected between the high-position table top clamping plate (311) and the high-position table bottom clamping plate (312); the high-position backrest member (32) comprises an L-shaped backrest plate (321) fixed on the high-position table top clamping plate (311) of the high-position clamping seat (31).
3. The off-site grinding and clamping platform for aircraft engine blades according to claim 2 is characterized by: A universal ball seat (322) is fixedly arranged on the top of the L-shaped support plate (321), a suction cup (323) is installed on the universal ball seat (322), a pressurizing check valve and a pressure relief check valve are arranged on the suction cup (323), and the pressurizing check valve is connected to the air pump (324) through an air pipe.
4. The off-site grinding and clamping platform for aircraft engine blades according to claim 3 is characterized by: The low-position cam locking member (23) comprises a low-position cam shaft (231), which is rotatably mounted in the horizontal direction on one end of the low-position table clamp (211) of the low-position clamp seat (21), and a low-position cam handle (232) is fixedly mounted on the low-position cam shaft (231).
5. The off-site grinding and clamping platform for aircraft engine blades according to claim 3 is characterized by: The high-position cam locking member (33) comprises a high-position cam shaft (331), which is rotatably mounted in the horizontal direction on one end of the high-position table clamp (311) of the high-position clamp seat (31), and a high-position cam handle (332) is fixedly mounted on the high-position cam shaft (331).
6. The off-site grinding fixture for aircraft engine blades according to claim 3 is characterized by: The length of the low-position cylindrical connecting rod (213) is adapted to the thickness of the machine platform (1), and the diameter of the low-position cylindrical connecting rod (213) is adapted to the width of the low-position assembly groove (11).
7. The off-site grinding and clamping platform for aircraft engine blades according to claim 3 is characterized by: The length of the high-position cylindrical connecting rod (313) is adapted to the thickness of the machine platform (1), and the diameter of the high-position cylindrical connecting rod (313) is adapted to the width of the high-position assembly groove (12).
8. The off-site grinding and clamping platform for aircraft engine blades according to claim 3 is characterized by: A slider (223) is provided on one end of the left clamping plate (221) protruding toward the right clamping plate (222); the right clamping plate (222) is slidably arranged on the slider (223) of the left clamping plate (221); and a sliding groove (224) is provided at the bottom of the right clamping plate (222) to match the slider (223).