A high-precision production device for aircraft engine tail nozzles

Abstract

The present invention relates to the technical field of tail nozzle processing, specifically a high-precision production device for tail nozzles of aircraft engines, comprising a grinding cylinder and a fluid driving mechanism, the fluid driving mechanism comprising a water pump and a liquid storage tank, the output end of the water pump is connected to the inside of the grinding cylinder through a metal curved pipe, the inside of the liquid storage tank is filled with abrasive flow, the inside of the grinding cylinder is connected to the tail nozzle through a fluid reflux mechanism, and grinding balls are placed inside the grinding cylinder, the grinding balls comprise a grinding ball shell and a liquid storage tank, and a grinding ring is arranged on the outer side of the grinding ball shell. The present invention forms a rapid rotating flow of abrasive particles through a metal curved pipe, and when the abrasive particles flow inside the grinding cylinder, the side of the tail nozzle is polished by the abrasive particles, and the abrasive particles can fully contact the tail nozzle, thereby improving the range of polishing and the efficiency of polishing, and while a plurality of grinding balls move, the side of the tail nozzle is polished by the grinding ring, thereby further improving the efficiency and precision of polishing.

Description

Technical Field

[0001] The invention relates to a high-precision production device, in particular to a high-precision production device for an aircraft engine tail nozzle, and belongs to the technical field of tail nozzle processing. Background Art

[0002] The tail nozzle, also known as the exhaust nozzle, or simply the nozzle, has the main function of an aviation gas turbine engine to continue expanding the exhaust gas from the engine, converting the available work of the gas into kinetic energy. The gas is ejected backward at a high speed (generally 550-600 m / s) to generate thrust. Adjustment of the tail nozzle area can change the distribution of the expansion ratio of the airflow in the turbine and the tail nozzle, thereby achieving control over the entire engine operating state. Therefore, the throat area of ​​the tail nozzle can be used as an adjustment variable for the engine.

[0003] Since the tail nozzle has a complex structure and a complex curved surface, the traditional grinding and polishing structure cannot perform effective grinding and cannot effectively ensure the contact between the angle grinder and the tail nozzle. The tail nozzle cannot be polished flat and may even be made more uneven, which consumes a lot of labor and reduces processing efficiency.

[0004] Therefore, it is urgent to improve the production equipment of the tail nozzle to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a high-precision production device for the tail nozzle of an aircraft engine. The abrasive flow is formed into a rapid rotating flow through a metal curved pipe. When the abrasive flow flows inside a grinding cylinder, the side of the tail nozzle is ground by the abrasive particles, which can fully contact the tail nozzle, thereby improving the grinding range and grinding efficiency. At the same time, multiple grinding balls move while grinding the side of the tail nozzle through a grinding circle, thereby further improving the grinding efficiency and grinding accuracy.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A high-precision production device for an aircraft engine tail nozzle, comprising a grinding cylinder and a fluid drive mechanism arranged at the bottom of the grinding cylinder, wherein the fluid drive mechanism comprises a water pump and a liquid storage tank, wherein the output end of the water pump is connected to the interior of the grinding cylinder through a metal curved pipe, and the input end of the water pump is connected to the interior of the liquid storage tank;

[0008] The interior of the liquid storage tank is filled with an abrasive flow, wherein the abrasive particles in the abrasive flow include silicon carbide, aluminum oxide and diamond, the carrier fluid is silicone oil, the bottom of the grinding cylinder is connected to a grinding cylinder bottom plate, and the metal curved pipe penetrates the grinding cylinder bottom plate and extends to the interior of the grinding cylinder;

[0009] The interior of the grinding cylinder is connected to the tail nozzle through a fluid reflux mechanism, and a plurality of grinding balls are placed inside the grinding cylinder. The grinding balls include a grinding ball shell and a liquid storage tank arranged inside the grinding ball shell. The liquid storage tank is filled with water. A grinding ring is fixedly arranged on the outer side of the grinding ball shell. The grinding ring is used to grind the side of the tail nozzle.

[0010] The grinding ball shell is provided with a pressing groove and an infusion port, the pressing groove is provided with an extrusion air bag connected with the liquid storage tank, the infusion port is connected with the liquid storage tank through a catheter, and the extrusion air bag is pressed, and when the internal pressure of the extrusion air bag is lower than the external pressure, water is pumped into the liquid storage tank, and the grinding ball is floated or suspended in the abrasive flow by changing its own weight.

[0011] Preferably, the extrusion airbag and the liquid storage tank form a relative sealing mechanism, and a plurality of supporting springs are fixedly provided inside the extrusion airbag, a magnetic ring is fixedly provided on the inner side of the grinding ball shell, and the liquid storage tank is fixedly provided on the side of the magnetic ring through a liquid storage tank support column.

[0012] Preferably, a rotating cylinder is vertically slidably arranged above the grinding cylinder, the rotating cylinder corresponds to the magnetic ring inside the grinding ball, and a first coil is wound around the upper end of the rotating cylinder, wherein after the first coil is energized, the rotating cylinder generates magnetic force and attracts the grinding ball, and grinds the side of the tail nozzle;

[0013] A rotating column is fixedly arranged inside the rotating cylinder, wherein when the rotating cylinder slides downward, the rotating column penetrates into the interior of the tail nozzle;

[0014] A second coil is wound around the upper end of the rotating column, wherein when the second coil is energized, the rotating column generates magnetic force and attracts the grinding ball to grind the side of the tail nozzle.

[0015] Preferably, a fixed connection cylinder is fixedly provided at the upper end of the rotating cylinder, a hydraulic lifting rod is fixedly provided at the upper end of the fixed connection cylinder, and an output end of the hydraulic lifting rod is fixedly connected to the upper side surface of the fixed connection cylinder through a rotating motor;

[0016] The rotary motor is used to rotate the rotary drum.

[0017] Preferably, a rotating cylinder connecting ring and a rotating column connecting ring are fixedly provided on the outer side surface of the rotating cylinder, and contact connecting rod slots are provided on the upper and lower side surfaces of the rotating cylinder connecting ring and the rotating column connecting ring, and a metal pole piece is fixedly provided inside the contact connecting rod slot, and the metal pole piece is electrically connected to the first coil or the second coil.

[0018] Preferably, an electrical support arm is slidably provided on one side of the rotating cylinder connecting ring, and the electrical support arm includes a rotating cylinder electrical connecting rod and a rotating column electrical connecting rod, the rotating cylinder electrical connecting rod corresponds to the rotating cylinder connecting ring, and the rotating column electrical connecting rod corresponds to the rotating column connecting ring, and the rotating cylinder electrical connecting rod and the rotating column electrical connecting rod are both fixedly provided with symmetrically distributed contact connecting rods, and the contact connecting rods are provided with electrical contacts, and the electrical contacts are electrically connected to the metal pole pieces.

[0019] Preferably, a support frame is fixedly provided on one side of the rotating cylinder, the upper end of the hydraulic lifting rod and the fluid driving mechanism are fixedly connected to the support frame, a slider guide groove is provided on the support frame, one end of the rotating cylinder electrical connecting rod is fixedly connected to a connecting rod slider, and the connecting rod slider is slidably arranged inside the slider guide groove.

[0020] Preferably, the fluid reflux mechanism comprises an electric telescopic rod and a support plate, the electric telescopic rod is fixedly arranged inside the liquid storage tank, and the support plate is arranged at the output end of the electric telescopic rod.

[0021] Preferably, a reflux hole is opened in the middle of the grinding cylinder, the output end of the electric telescopic rod passes through the reflux hole and is fixedly connected to the support plate, and a reflux hole sealing ring is connected to the bottom of the support plate, and the reflux hole sealing ring is used to seal the reflux hole.

[0022] Preferably, a support ring is fixedly provided on the support plate, a plurality of centrally symmetrical support columns are provided on the support ring, a tail nozzle clamp block is fixedly provided on the support column, and the tail nozzle clamp block is used to fix the tail nozzle.

[0023] The present invention has at least the following beneficial effects:

[0024] 1. The abrasive flow inside the liquid storage tank is extracted by a water pump and then rushed into the inside of the grinding cylinder through a metal curved pipe to form a rotating water flow. The abrasive flow contains silicon carbide, aluminum oxide and diamond. The carrier fluid is silicone oil, which is a high-viscosity mineral oil with good fluidity and stability. It can carry abrasive particles well and maintain uniform distribution of abrasives. When the water pump drives the abrasive flow to rotate inside the grinding cylinder, the abrasive particles carried by the silicone oil can flow inside the grinding cylinder and grind the side of the tail nozzle through the abrasive flow. The abrasive flow can fully contact the tail nozzle, thereby improving the grinding range and grinding efficiency. Moreover, the grinding rate of the tail nozzle can be controlled by controlling the flow rate of the abrasive flow through the water pump.

[0025] 2. A grinding ring is fixedly arranged on the outer side of the grinding ball shell. The grinding balls float or suspend inside the abrasive flow. The flow of the abrasive flow can drive the grinding balls to move. While the grinding balls move, the side of the tail nozzle is polished through the grinding ring, further improving the grinding efficiency and grinding accuracy.

[0026] 3. By squeezing the extrusion airbag on the liquid storage tank, when the pressure inside the liquid storage tank is lower than the external pressure, liquids such as water are sucked into the liquid storage tank, thereby changing the overall weight of the grinding balls, which can achieve the sinking, suspension and floating of the grinding balls. Multiple grinding balls are distributed inside the abrasive flow in the state of sinking, suspension and floating, and the side of the tail nozzle is polished with the flow of the abrasive flow, which greatly improves the grinding efficiency and grinding accuracy.

[0027] 4. Therefore, the side of the tail nozzle can also be polished by driving the grinding balls through the rotating cylinder and the rotating column, further improving the grinding efficiency and grinding accuracy. The rotating cylinder is connected to the rotating motor through the hydraulic lifting rod. The rotating cylinder can be slid to the outer side of the grinding cylinder through the hydraulic lifting rod, and the rotating cylinder is driven to rotate by the rotating motor, and the grinding balls are driven to rotate inside the grinding cylinder, so as to achieve the purpose of grinding the side of the tail nozzle through the grinding balls.

[0028] 5. A reflux hole is provided on the bottom plate of the grinding cylinder. The electric telescopic rod passes through the reflux hole and is fixedly connected to the support plate. A reflux hole sealing ring is provided at the bottom of the support plate. That is to say, when the electric telescopic rod moves downward, the reflux hole sealing ring seals the reflux hole to prevent the abrasive flow from flowing out of the reflux hole. After the grinding is completed, starting the electric telescopic rod is convenient for removing the tail nozzle from the grinding cylinder and for recovering the abrasive flow through the reflux hole. The structure is simple and the processing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 It is a partial cross-sectional view of the present invention;

[0031] Figure 2 is a cross-sectional view of a grinding tube of the present invention;

[0032] Figure 3 A perspective view of the present invention;

[0033] Figure 4 is a cross-sectional view of a grinding ball of the present invention;

[0034] Figure 5 The local structure of the present invention Figure 1 ;

[0035] Figure 6 It is a cross-sectional view of the rotating drum of the present invention;

[0036] Figure 7 The local structure of the present invention Figure 2 ;

[0037] Figure 8 The local structure of the present invention Figure 3 ;

[0038] Fig. 9 It is a structural diagram of the fluid driving mechanism of the present invention;

[0039] Fig.10 It is a structural diagram of the fluid reflux mechanism of the present invention;

[0040] Fig.11 for Figure 1 A is an enlarged view of the middle image.

[0041] In the figure, 1, grinding cylinder; 101, grinding cylinder bottom plate; 102, reflux hole; 2, rotating cylinder; 201, fixed connection cylinder; 202, first coil; 3, rotating column; 301, second coil; 4, fluid drive mechanism; 401, water pump; 402, liquid storage tank; 404, metal curved pipe; 5, electrical support arm; 501, rotating cylinder electrical connection rod; 502, rotating column electrical connection rod; 503, connecting rod slider; 504, contact connecting rod; 505, electrical contact; 6, grinding ball; 601, liquid storage tank; 602, magnetic ring; 603, grinding ball shell; 604, grinding Ring; 605, extrusion airbag; 606, support spring; 607, pressing groove; 608, liquid storage tank support column; 609, infusion port; 7, fluid reflux mechanism; 701, electric telescopic rod; 702, support ring; 703, support column; 704, tail nozzle block; 705, support plate; 706, reflux hole sealing ring; 8, rotating cylinder connecting ring; 801, rotating column connecting ring; 802, contact connecting rod slot; 803, metal pole piece; 9, hydraulic lifting rod; 901, rotating motor; 10, tail nozzle; 11, abrasive flow; 12, support frame; 13, slider guide groove. DETAILED DESCRIPTION

[0042] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0043] like Figure 1-Figure 11As shown, the high-precision production device for the tail nozzle of an aircraft engine provided in this embodiment includes a grinding cylinder 1 and a fluid driving mechanism 4 arranged at the bottom of the grinding cylinder 1, the fluid driving mechanism 4 includes a water pump 401 and a liquid storage tank 402, the output end of the water pump 401 is connected to the interior of the grinding cylinder 1 through a metal curved pipe 404, the input end of the water pump 401 is connected to the interior of the liquid storage tank 402, the interior of the liquid storage tank 402 is filled with an abrasive flow 11, the bottom of the grinding cylinder 1 is connected to a grinding cylinder bottom plate 101, the metal curved pipe 404 penetrates the grinding cylinder bottom plate 101 and extends to the interior of the grinding cylinder 1, and the water pump 401 is connected to the bottom of the grinding cylinder 1. 401 extracts the abrasive flow 11 from the liquid storage tank 402 and then rushes into the inside of the grinding cylinder 1 through the metal curved pipe 404. Since the metal curved pipe 404 is a curved structure, a rotating water flow can be formed inside the grinding cylinder 1. The abrasive flow 11 contains silicon carbide, aluminum oxide and diamond. The carrier fluid is silicone oil, which is a high-viscosity mineral oil with good fluidity and stability. It can carry abrasive particles well and maintain uniform distribution of abrasive particles. When the water pump 401 drives the abrasive flow 11 to rotate inside the grinding cylinder 1, the abrasive particles carried by the silicone oil can flow inside the grinding cylinder 1.

[0044] Abrasive flow grinding, the interior of the grinding cylinder 1 is connected to the tail nozzle 10 through the fluid reflux mechanism 7, and during the flow of the abrasive flow 11, the side of the tail nozzle 10 is ground by the abrasive particles in the abrasive flow 11, and the side of the tail nozzle 10 is ground by the abrasive flow 11. The abrasive flow 11 can fully contact with the tail nozzle 10, thereby improving the grinding range and grinding efficiency, and the flow rate of the abrasive flow 11 can be controlled by the water pump 401 to control the grinding rate of the tail nozzle 10;

[0045] Grinding with grinding balls, and a plurality of grinding balls 6 are placed inside the grinding cylinder 1, the grinding balls 6 include a grinding ball shell 603 and a liquid storage tank 601 arranged inside the grinding ball shell 603, the liquid storage tank 601 is filled with water, a grinding ring 604 is fixedly arranged on the outer side of the grinding ball shell 603, the grinding ring 604 is used to grind the side of the tail nozzle 10, and a grinding ring 604 is fixedly arranged on the outer side of the grinding ball shell 603, the grinding balls 6 float or suspend inside the abrasive flow 11, and the flow of the abrasive flow 11 can drive the grinding balls 6 to move, and while the grinding balls 6 move, the side of the tail nozzle 10 is grinded through the grinding ring 604, further improving the grinding efficiency and grinding accuracy;

[0046] In order to make the grinding ball 6 suspend or float in the abrasive flow 11, the grinding ball 6 sinks or floats by changing its own weight. A pressing groove 607 and an infusion port 609 are provided on the grinding ball shell 603. An extrusion airbag 605 connected to the liquid storage tank 601 is provided inside the pressing groove 607. The infusion port 609 is connected to the liquid storage tank 601 through a conduit. When the extrusion airbag 605 is pressed and the internal pressure of the extrusion airbag 605 is lower than the external pressure, water is pumped into the liquid storage tank 601. The grinding ball 6 floats or suspends in the abrasive flow 11 by changing its own weight. Specifically,

[0047] By squeezing the squeezing airbag 605 on the liquid storage bin 601, when the pressure inside the liquid storage bin 601 is lower than the pressure outside, liquid such as water is sucked into the liquid storage bin 601, thereby changing the overall weight of the grinding ball 6. When the gravity on the grinding ball 6 is greater than the buoyancy on the grinding ball 6, the grinding ball 6 will sink.

[0048] When the gravity on the grinding ball 6 is equal to the buoyancy of all the liquid it displaces, it is in a suspended state;

[0049] When floating, the extrusion airbag 605 is squeezed to squeeze the liquid in the liquid storage tank 601 and suck air into the liquid storage tank 601, so that the gravity of the grinding ball 6 is smaller than the buoyancy it receives and the grinding ball 6 is in a floating state;

[0050] Therefore, the plurality of grinding balls 6 are distributed inside the abrasive flow 11 in the states of sinking, suspension and floating, and the side of the tail nozzle 10 is grinded along with the flow of the abrasive flow 11, thereby greatly improving the grinding efficiency and grinding accuracy.

[0051] Further, such as Figure 1 , Figure 4 , Figure 5 as well as Figure 6 As shown, the extrusion airbag 605 and the liquid storage tank 601 form a relative sealing mechanism, and a plurality of supporting springs 606 are fixedly arranged inside the extrusion airbag 605. The liquid storage tank 601 and the extrusion airbag 605 are in a relative sealing mechanism, so when not braking, air or liquid will not enter the inside of the liquid storage tank 601. The inner side surface of the grinding ball shell 603 is fixedly provided with a magnetic ring 602. The liquid storage tank 601 is fixedly arranged on the side surface of the magnetic ring 602 through the liquid storage tank support column 608. A rotating cylinder 2 is vertically slidably arranged above the grinding cylinder 1. When the rotating cylinder 2 slides downward and is sleeved on the grinding cylinder 1, the rotating cylinder 2 corresponds to the magnetic ring 602 inside the grinding ball 6. The upper end of the rotating cylinder 2 is wound with a first coil 202. After the first coil 202 is energized, the rotating cylinder 2 generates magnetic force and attracts the grinding ball 6, and grinds the side surface of the tail nozzle 10.

[0052] In addition, a rotating column 3 is fixedly arranged inside the rotating cylinder 2, wherein when the rotating cylinder 2 slides downward, the rotating column 3 penetrates into the tail nozzle 10, and a second coil 301 is wound around the upper end of the rotating column 3, wherein after the second coil 301 is energized, the rotating column 3 generates magnetic force and attracts the grinding ball 6, which is used to grind the side of the tail nozzle 10, so the grinding ball 6 driven by the rotating cylinder 2 and the rotating column 3 can also grind the side of the tail nozzle 10, further improving the grinding efficiency and grinding accuracy;

[0053] In order to facilitate the use of the rotating cylinder 2 and the rotating column 3 to grind the side of the tail nozzle 10, as shown in FIG. Figure 3 As shown, a fixed connecting cylinder 201 is fixedly provided on the upper end of the rotating cylinder 2, and a hydraulic lifting rod 9 is fixedly provided on the upper end of the fixed connecting cylinder 201. The output end of the hydraulic lifting rod 9 is fixedly connected to the upper side surface of the fixed connecting cylinder 201 through a rotating motor 901. The rotating motor 901 is used to rotate the rotating cylinder 2. The rotating cylinder 2 is connected to the rotating motor 901 through the hydraulic lifting rod 9. The rotating cylinder 2 can be slid to the outer side surface of the grinding cylinder 1 through the hydraulic lifting rod 9, and the rotating cylinder 2 is driven to rotate through the rotating motor 901, and the grinding balls 6 are driven to rotate inside the grinding cylinder 1, so as to achieve the purpose of grinding the side surface of the tail nozzle 10 through the grinding balls 6.

[0054] Furthermore, in order to facilitate the first coil 202 and the second coil 301 to be energized during the rotation of the rotating drum 2, as shown in FIG. Figure 5 and Figure 6 As shown, a rotating cylinder connecting ring 8 and a rotating column connecting ring 801 are fixedly provided on the outer side surface of the rotating cylinder 2, and contact connecting rod slots 802 are provided on the upper and lower sides of the rotating cylinder connecting ring 8 and the rotating column connecting ring 801, and a metal pole piece 803 is fixedly provided inside the contact connecting rod slot 802, and the metal pole piece 803 is electrically connected to the first coil 202 or the second coil 301. A rotating cylinder connecting ring 8 and a rotating column connecting ring 801 are fixedly provided on the outer side surface of the rotating cylinder 2, and contact connecting rod slots 802 are provided on the rotating cylinder connecting ring 8 and the rotating column connecting ring 801, and a metal pole piece 803 is fixedly provided inside the contact connecting rod slot 802, and the metal pole piece 803 is electrically connected to the first coil 202 or the second coil 301, respectively. Therefore, the first coil 202 and the second coil 301 can be powered on as long as they are in contact with the metal pole piece 803 at all times, so that the rotating cylinder 2 or the rotating column 3 generates a magnetic field;

[0055] At the same time, an electrical support arm 5 is slidably provided on one side of the rotating cylinder connecting ring 8, and the electrical support arm 5 includes a rotating cylinder electrical connection rod 501 and a rotating column electrical connection rod 502. The rotating cylinder electrical connection rod 501 corresponds to the rotating cylinder connecting ring 8, and the rotating column electrical connection rod 502 corresponds to the rotating column connecting ring 801. The rotating cylinder electrical connection rod 501 and the rotating column electrical connection rod 502 are both fixedly provided with symmetrically distributed contact connection rods 504, and the contact connection rod 504 is provided with an electrical contact 505. The electrical contact 505 is electrically connected to the metal pole piece 803, and the rotating cylinder electrical connecting rod 501 and the rotating column electrical connecting rod 502 are both connected with electrical contacts 505 through the contact connecting rod 504. The electrical contacts 505 are clamped in the inside of the contact connecting rod clamping slot 802 and contact with the metal pole piece 803. When the rotating cylinder 2 rotates, the electrical contacts 505 are always in contact with the metal pole piece 803. That is to say, under the action of the electrical support arm 5, it is ensured that the first coil 202 and the second coil 301 are always in a powered state.

[0056] Since the rotating drum 2 needs to slide downward, Figure 3 As shown, a support frame 12 is fixedly provided on one side of the rotating cylinder 2, the upper end of the hydraulic lifting rod 9 and the fluid driving mechanism 4 are fixedly connected to the support frame 12, a slider guide groove 13 is provided on the support frame 12, one end of the rotating cylinder electrical connecting rod 501 is fixedly connected to a connecting rod slider 503, the connecting rod slider 503 is slidably provided inside the slider guide groove 13, a connecting rod slider 503 is provided at one end of the rotating cylinder electrical connecting rod 501 and the rotating column electrical connecting rod 502, a slider guide groove 13 corresponding to the connecting rod slider 503 is provided on the support frame 12, so when the rotating cylinder 2 slides downward, the contact connecting rod 504 will also slide accordingly;

[0057] Further, if Figure 7 , Figure 8 as well as Fig.10 As shown, the fluid reflux mechanism 7 includes an electric telescopic rod 701 and a support plate 705. The electric telescopic rod 701 is fixedly arranged inside the liquid storage tank 402, and the support plate 705 is arranged at the output end of the electric telescopic rod 701. The support plate 705 at the output end of the electric telescopic rod 701 is arranged inside the grinding cylinder 1. Therefore, after the electric telescopic rod 701 is started, the tail nozzle 10 can be pushed out of the grinding cylinder 1, which is convenient for placing the tail nozzle 10. The structure is simple and the convenience of use is improved.

[0058] At the same time, a reflux hole 102 is opened in the middle of the grinding cylinder 1, the output end of the electric telescopic rod 701 passes through the reflux hole 102 and is fixedly connected to the support plate 705, and a reflux hole sealing ring 706 is connected to the bottom of the support plate 705. The reflux hole sealing ring 706 is used to seal the reflux hole 102. A reflux hole 102 is opened on the bottom plate 101 of the grinding cylinder, and the electric telescopic rod 701 passes through the reflux hole 102 and is fixedly connected to the support plate 705. A reflux hole sealing ring 706 is arranged at the bottom of the support plate 705. That is to say, when the electric telescopic rod 701 moves downward, the reflux hole sealing ring 706 seals the reflux hole 102 to prevent the abrasive flow 11 from flowing out of the reflux hole 102. After the grinding is completed, starting the electric telescopic rod 701 is convenient for the processing tail nozzle 10 to be taken out of the grinding cylinder 1 and for the abrasive flow 11 to be recovered through the reflux hole 102. The structure is simple and the processing efficiency is improved.

[0059] In addition, if Fig.10 As shown, a support ring 702 is fixedly provided on the support plate 705, and a plurality of centrally symmetrical support columns 703 are provided on the support ring 702. A tail nozzle clamp 704 is fixedly provided on the support column 703. The tail nozzle clamp 704 is the same as the fixed tail nozzle 10. The support plate 705 is connected with a plurality of support columns 703 through the support ring 702, and a tail nozzle clamp 704 is fixedly provided on the support column 703. The tail nozzle 10 is fixed on the tail nozzle clamp 704, so that the stability of the tail nozzle 10 is improved, which is convenient for fixing the tail nozzle 10, facilitating the later grinding of the tail nozzle 10, and facilitating the removal of the tail nozzle 10 from the grinding cylinder 1, thereby greatly improving the grinding efficiency.

[0060] like Figure 1-Figure 11 As shown, the principle of the high-precision production device for the tail nozzle of an aircraft engine provided in this embodiment is as follows:

[0061] The abrasive flow 11 in the liquid storage tank 402 is extracted by the water pump 401 and then rushed into the inside of the grinding cylinder 1 through the metal curved pipe 404. Since the metal curved pipe 404 is a curved structure, a rotating water flow can be formed inside the grinding cylinder 1. The inside of the abrasive flow 11 contains silicon carbide, aluminum oxide and diamond. The carrier fluid is silicone oil, which is a high-viscosity mineral oil with good fluidity and stability. It can carry abrasive particles well and maintain uniform distribution of abrasives. When the water pump 401 drives the abrasive flow 11 to rotate inside the grinding cylinder 1, the abrasive particles carried by the silicone oil can flow inside the grinding cylinder 1.

[0062] Abrasive flow grinding, the interior of the grinding cylinder 1 is connected to the tail nozzle 10 through the fluid reflux mechanism 7, and during the flow of the abrasive flow 11, the side of the tail nozzle 10 is ground by the abrasive particles in the abrasive flow 11, and the side of the tail nozzle 10 is ground by the abrasive flow 11. The abrasive flow 11 can fully contact with the tail nozzle 10, thereby improving the grinding range and grinding efficiency, and the flow rate of the abrasive flow 11 can be controlled by the water pump 401 to control the grinding rate of the tail nozzle 10;

[0063] A grinding ring 604 is fixedly provided on the outer side of the grinding ball shell 603, and the grinding ball 6 floats or suspends inside the abrasive flow 11. The flow of the abrasive flow 11 can drive the grinding ball 6 to move. While the grinding ball 6 moves, the side of the tail nozzle 10 is grinded by the grinding ring 604, thereby further improving the grinding efficiency and grinding accuracy. Multiple grinding balls 6 are distributed inside the abrasive flow 11 in a sinking, suspended and floating state, and the side of the tail nozzle 10 is grinded as the abrasive flow 11 flows, thereby greatly improving the grinding efficiency and grinding accuracy.

[0064] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0065] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0066] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A high-precision production device for an aircraft engine tail nozzle, comprising a grinding cylinder (1) and a fluid drive mechanism (4) arranged at the bottom of the grinding cylinder (1), characterized in that: The fluid drive mechanism (4) comprises a water pump (401) and a liquid storage tank (402); the output end of the water pump (401) is connected to the interior of the grinding cylinder (1) via a metal curved pipe (404); the input end of the water pump (401) is connected to the interior of the liquid storage tank (402); The interior of the liquid storage tank (402) is filled with an abrasive flow (11), wherein the abrasive particles in the abrasive flow (11) include silicon carbide, aluminum oxide and diamond, and the carrier fluid is silicone oil; the bottom of the grinding cylinder (1) is connected to a grinding cylinder bottom plate (101), and the metal curved pipe (404) penetrates the grinding cylinder bottom plate (101) and extends into the interior of the grinding cylinder (1); The interior of the grinding cylinder (1) is connected to a tail nozzle (10) via a fluid reflux mechanism (7), and a plurality of grinding balls (6) are placed inside the grinding cylinder (1), the grinding balls (6) comprising a grinding ball shell (603) and a liquid storage tank (601) arranged inside the grinding ball shell (603), the liquid storage tank (601) being filled with water, and a grinding ring (604) is fixedly arranged on the outer side surface of the grinding ball shell (603), and the grinding ring (604) is used to grind the side surface of the tail nozzle (10); The grinding ball shell (603) is provided with a pressing groove (607) and an infusion port (609); an extrusion air bag (605) connected to the liquid storage tank (601) is arranged inside the pressing groove (607); the infusion port (609) is connected to the liquid storage tank (601) through a conduit; by pressing the extrusion air bag (605), when the internal pressure of the extrusion air bag (605) is lower than the external pressure, water is pumped into the liquid storage tank (601), and the grinding ball (6) is floated or suspended in the abrasive particle flow (11) by changing its own weight.

2. The high-precision production device for an aircraft engine tail nozzle according to claim 1, characterized in that: The extrusion airbag (605) and the liquid storage bin (601) form a relative sealing mechanism, and a plurality of support springs (606) are fixedly arranged inside the extrusion airbag (605). A magnetic ring (602) is fixedly arranged on the inner side surface of the grinding ball housing (603), and the liquid storage bin (601) is fixedly arranged on the side surface of the magnetic ring (602) via a liquid storage bin support column (608).

3. The high-precision production device for an aircraft engine tail nozzle according to claim 2, characterized in that: A rotating cylinder (2) is vertically slidably disposed above the grinding cylinder (1), the rotating cylinder (2) corresponding to the magnetic ring (602) inside the grinding ball (6), and a first coil (202) is wound around the upper end of the rotating cylinder (2), wherein when the first coil (202) is energized, the rotating cylinder (2) generates magnetic force and attracts the grinding ball (6), thereby grinding the side surface of the tail nozzle (10); A rotating column (3) is fixedly arranged inside the rotating cylinder (2), wherein when the rotating cylinder (2) slides downward, the rotating column (3) penetrates into the interior of the tail nozzle (10); A second coil (301) is wound around the upper end of the rotating column (3), wherein when the second coil (301) is energized, the rotating column (3) generates magnetic force and attracts the grinding ball (6), thereby grinding the side surface of the tail nozzle (10).

4. The high-precision production device for an aircraft engine tail nozzle according to claim 3, characterized in that: A fixed connection cylinder (201) is fixedly provided at the upper end of the rotating cylinder (2), a hydraulic lifting rod (9) is fixedly provided at the upper end of the fixed connection cylinder (201), and an output end of the hydraulic lifting rod (9) is fixedly connected to the upper side surface of the fixed connection cylinder (201) via a rotating motor (901); The rotating motor (901) is used to rotate the rotating drum (2).

5. The high-precision production device for an aircraft engine tail nozzle according to claim 4, characterized in that: A rotating cylinder connecting ring (8) and a rotating column connecting ring (801) are fixedly arranged on the outer side surface of the rotating cylinder (2); upper and lower side surfaces of the rotating cylinder connecting ring (8) and the rotating column connecting ring (801) are provided with contact connecting rod clamping grooves (802); a metal pole piece (803) is fixedly arranged inside the contact connecting rod clamping groove (802); and the metal pole piece (803) is electrically connected to the first coil (202) or the second coil (301).

6. The high-precision production device for an aircraft engine tail nozzle according to claim 5, characterized in that: An electrical support arm (5) is slidably provided on one side of the rotating cylinder connection ring (8), and the electrical support arm (5) comprises a rotating cylinder electrical connection rod (501) and a rotating column electrical connection rod (502), the rotating cylinder electrical connection rod (501) corresponds to the rotating cylinder connection ring (8), and the rotating column electrical connection rod (502) corresponds to the rotating column connection ring (801), and symmetrically distributed contact connection rods (504) are fixedly provided on the rotating cylinder electrical connection rod (501) and the rotating column electrical connection rod (502), and electrical contacts (505) are provided on the contact connection rod (504), and the electrical contacts (505) are electrically connected to the metal pole piece (803).

7. The high-precision production device for an aircraft engine tail nozzle according to claim 6, characterized in that: A support frame (12) is fixedly provided on one side of the rotating cylinder (2); the upper end of the hydraulic lifting rod (9) and the fluid driving mechanism (4) are fixedly connected to the support frame (12); a slider guide groove (13) is provided on the support frame (12); one end of the rotating cylinder electrical connecting rod (501) is fixedly connected to a connecting rod slider (503); and the connecting rod slider (503) is slidably arranged inside the slider guide groove (13).

8. The high-precision production device for an aircraft engine tail nozzle according to claim 7, characterized in that: The fluid reflux mechanism (7) comprises an electric telescopic rod (701) and a support plate (705); the electric telescopic rod (701) is fixedly arranged inside the liquid storage tank (402); and the support plate (705) is arranged at the output end of the electric telescopic rod (701).

9. The high-precision production device for an aircraft engine tail nozzle according to claim 8, characterized in that: A reflux hole (102) is provided in the middle of the grinding cylinder (1); the output end of the electric telescopic rod (701) passes through the reflux hole (102) and is fixedly connected to the support plate (705); a reflux hole sealing ring (706) is connected to the bottom of the support plate (705); the reflux hole sealing ring (706) is used to seal the reflux hole (102).

10. The high-precision production device for an aircraft engine tail nozzle according to claim 8, characterized in that: A support ring (702) is fixedly arranged on the support plate (705), a plurality of centrally symmetrical support columns (703) are arranged on the support ring (702), a tail nozzle clamping block (704) is fixedly arranged on the support column (703), and the tail nozzle clamping block (704) is used to fix the tail nozzle (10).

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