Rotor movable blade machining positioning device and method

Abstract

The present invention discloses a rotor moving blade machining fixing device and method. The rotor moving blade machining fixing device includes a first ring body, a second ring body, a first tightening member and a second tightening member. The first ring body has a first abutting surface and a plurality of first holes, and the plurality of first holes are arranged at intervals along the circumferential direction of the first ring body. The second ring body has a second abutting surface and a plurality of second holes, and the plurality of second holes are arranged at intervals along the circumferential direction of the second ring body. The first ring body and the second ring body are arranged opposite to each other along the axis direction of the rotor. The first abutting surface and the second abutting surface are used for abutting against both ends of the blade root of the moving blade in the axis direction of the rotor. The first tightening member is arranged in the first hole, and the second tightening member is arranged in the second hole. The first tightening member and the second tightening member are used for abutting against the root of the blade root of the moving blade. The present invention can realize the axial and radial positioning of the moving blade, limit the circumferential swing, and improve the machining stability and machining accuracy.

Description

Technical Field

[0001] The present invention belongs to the technical field of machining of movable blades of an engine rotor, and particularly relates to a machining and positioning device and method for a rotor movable blade. Background Art

[0002] The disk and the movable blade of a split engine rotor are assembled separately. After assembly, the movable blade is not accurately positioned and has irregular axial movement, radial movement and circumferential swing. When grinding the movable blade, the disk is fixed on the workpiece rotating shaft of the grinding machine, and the tip of the movable blade is ground by an external circular grinding wheel or an internal circular grinding wheel. Due to the action of the grinding force, the movable blade will shake during machining, and a support structure or high-speed centrifugal force is required to maintain its maximum outer diameter condition.

[0003] In the related art, before grinding the tip, the blade is fixed and vibration-damped by means of expanding and fixing with a wooden wedge, wrapping with plasticine, tying with a hemp rope, etc. However, the above solutions have defects such as inaccurate blade fixing, unstable effect, long installation and cleaning time, and non-reusability. In the related art, the inlet and exhaust edges of the blade are also restricted by a tooling, but the radial restraint effect on the movable blade is not good. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0005] Therefore, an embodiment of the present invention provides a machining and positioning device for a rotor movable blade, which can achieve axial and radial positioning of the movable blade, limit circumferential swing, and improve machining stability and machining accuracy.

[0006] An embodiment of the present invention also provides a machining and positioning method for a rotor movable blade.

[0007] The machining and positioning device for a rotor movable blade according to an embodiment of the present invention includes:

[0008] A first ring body, the first ring body having a first abutting surface and a plurality of first holes, the plurality of first holes being arranged at intervals along the circumferential direction of the first ring body;

[0009] A second ring body, the second ring body having a second abutting surface and a plurality of second holes, the plurality of second holes being arranged at intervals along the circumferential direction of the second ring body, the first ring body and the second ring body being arranged opposite to each other along the axis direction of the rotor, the first abutting surface and the second abutting surface being used for abutting against both ends of the blade root of the movable blade in the axis direction of the rotor;

[0010] A first tightening member, the first tightening member being arranged in the first hole;

[0011] A second pressing member is provided in the second hole, and the first pressing member and the second pressing member are used to abut against the root of the moving blade.

[0012] The present invention can achieve axial and radial positioning of the moving blade, limit circumferential swing, improve processing stability and accuracy. The installation process of the rotor moving blade processing and positioning device according to the embodiment of the present invention is simplified, the installation and cleaning time is greatly shortened, the device can be reused, saving device and labor costs; in addition, the overall structure of the embodiment of the present invention is compact, without blocking the area above the blade root, providing the possibility of directly processing other features of the blade without disassembling the device, and having better practicability.

[0013] In some embodiments, there is a first preset angle between the axial direction of the first hole and the axial direction of the rotor, and one end of the first hole close to the moving blade is inclined toward the centrifugal direction of the moving blade;

[0014] There is a second preset angle between the axial direction of the second hole and the axial direction of the rotor, and one end of the second hole close to the moving blade is inclined toward the centrifugal direction of the moving blade.

[0015] In some embodiments, the first hole and the second hole are diagonally arranged with respect to the root of the moving blade.

[0016] In some embodiments, it further includes a first pressing component and a second pressing component. The first pressing component is connected to the disk of the rotor and is used to abut against one end of the first ring body away from the moving blade. The second pressing component is provided between the disk of the rotor and the second ring body and is used to abut against one end of the second ring body away from the moving blade.

[0017] In some embodiments, the first pressing component has a threaded hole, and the first pressing component is connected to the external threaded section on the disk through the threaded hole.

[0018] In some embodiments, the first pressing component is a nut.

[0019] In some embodiments, the second pressing component includes a plurality of pressing ring plates arranged circumferentially and a plurality of third pressing members. The plurality of pressing ring plates are detachably connected. The pressing ring plates are provided with a plurality of third holes, and the third pressing members are provided in the third holes. The pressing ring plates have a third abutting surface, and the third abutting surface is used to abut against the end plate on the disk of the rotor. The third pressing member abuts against the second ring body.

[0020] In some embodiments, the pressing ring plate has a sunk platform, the bottom surface of the sunk platform is the third abutting surface, and the circumferential side surface of the sunk platform is used to abut against the circumferential side surface of the middle end plate of the disk of the rotor.

[0021] In some embodiments, the tightening torques of the first tightening member and the second tightening member are from 0.5 N·m to 5 N·m.

[0022] The method for machining and positioning a rotor moving blade according to an embodiment of the present invention uses the rotor moving blade machining and positioning device described in any one of the above embodiments to position the rotor moving blade, and includes the following steps:

[0023] Connect the first ring body to the disk of the rotor;

[0024] Install the moving blade on the disk and make the moving blade abut against the first ring body;

[0025] Install the second ring body and pre-tighten the first ring body and the second ring body;

[0026] Based on the deformation simulation data of the moving blade, adjust the tightening torques of the first tightening member and the second tightening member, and perform diagonal jacking on the moving blade;

[0027] Fasten the first ring body and the second ring body. Description of the Drawings

[0028] Figure 1 is an exploded view of the rotor moving blade machining and positioning device according to an embodiment of the present invention.

[0029] Figure 2 is an assembly drawing of the rotor moving blade machining and positioning device according to an embodiment of the present invention.

[0030] Figure 3 is a schematic cross-sectional structure view of the rotor moving blade machining and positioning device according to an embodiment of the present invention.

[0031] Figure 4 is a schematic assembly structure view of the second tightening member according to an embodiment of the present invention.

[0032] Figure 5 is a structural diagram of the assembly position of the second tightening member and the moving blade according to an embodiment of the present invention.

[0033] Reference Signs:

[0034] 100, rotor moving blade machining and positioning device;

[0035] 1, first ring body; 11, first hole; 12, first abutting surface;

[0036] 2, second ring body; 21, second hole; 22, second abutting surface;

[0037] 3, first tightening member;

[0038] 4, second tightening member;

[0039] 5. The first pressing member;

[0040] 6. The second pressing member; 61. The pressing ring plate; 62. The third hole; 63. The third pressing member; 64. The third abutting surface; 65. The boss;

[0041] 71. The blisk; 711. The end plate; 712. The external thread section; 72. The movable blade; 721. The blade root; 722. The root of the blade root. Detailed implementation manners

[0042] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0043] The following combines Figures 1 to 5 to describe in detail the rotor movable blade machining and positioning device and method of the embodiments of the present invention.

[0044] As Figures 1 - 3 shown, the rotor movable blade machining and positioning device 100 of the embodiment of the present invention includes a first ring body 1, a second ring body 2, a first pressing member 3 and a second pressing member 4. The first ring body 1 has a first abutting surface 12 and a plurality of first holes 11. The plurality of first holes 11 are arranged at intervals along the circumferential direction of the first ring body 1. The second ring body 2 has a second abutting surface 22 and a plurality of second holes 21. The plurality of second holes 21 are arranged at intervals along the circumferential direction of the second ring body 2. The first ring body 1 and the second ring body 2 are arranged opposite to each other along the axial direction of the rotor. The first abutting surface 12 and the second abutting surface 22 are used to abut against both ends of the blade root 721 of the movable blade 72 in the axial direction of the rotor; the first pressing member 3 is arranged in the first hole 11, the second pressing member 4 is arranged in the second hole 21, and the first pressing member 3 and the second pressing member 4 are used to abut against the root 722 of the blade root of the movable blade 72.

[0045] When positioning the movable blade 72, the first ring body 1 and the second ring body 2 respectively support against both ends of the movable blade 72 in the axial direction of the rotor, and the first ring body 1 and the second ring body 2 abut against the blade root 721 of the movable blade 72, so as to realize the positioning of the movable blade 72 in the axial direction of the rotor, inhibit the irregular axial movement of the movable blade 72 in the axial direction of the rotor, and at the same time, the working condition that the movable blade 72 is axially positioned to one end and abuts flat after being subjected to the air flow reaction force can be simulated, so that a plurality of movable blades 72 are all abutted against the abutting surfaces of the first ring body 1 and the second ring body 2, and the position of the movable blade 72 in the axial direction of the rotor is kept fixed.

[0046] The first pressing member 3 and the second pressing member 4 brace the root 722 of the movable blade 72, which can constrain and position the position of the movable blade 72 in the radial direction of the rotor, inhibit the radial movement of the movable blade 72 on the rotor, and make the blade in the maximum outer diameter state, so as to simulate the actual working condition of the blade under the action of centrifugal force during engine operation. At the same time, the movable blade 72 is pressed and positioned in multiple directions by the first ring body 1, the second ring body 2, the first pressing member 3 and the second pressing member 4, which can also inhibit the circumferential swing of the movable blade 72 and improve the positioning accuracy and stability of the movable blade 72.

[0047] The present invention can realize the axial and radial positioning of the movable blade 72, limit the circumferential swing, improve the processing stability and processing accuracy. The installation process of the rotor movable blade processing and pressing device 100 according to the embodiment of the present invention is simplified, the installation and cleaning time is greatly shortened, the device can be reused, and the device and labor costs are saved; in addition, the overall structure of the embodiment of the present invention is compact, and it does not form an obstruction to the area above the blade root, which provides the possibility for directly processing other features of the blade without disassembling the device, and has better practicability.

[0048] Further, at least one of the first ring body 1 and the second ring body 2 abuts against the end face of the disk 71 in the axial direction of the rotor. Further, the disk 71 has a connecting portion close to the movable blade 72, and one of the first ring body 1 and the second ring body 2 abuts against the end face of the connecting portion in the axial direction of the rotor. During assembly, one end of the movable blade 72 in the axial direction of the rotor and one end of the disk 71 in the axial direction of the rotor can be on the same end face, which can more effectively simulate the axial position of the movable blade 72 under the working condition of the engine.

[0049] Optionally, the first ring body 1 and the second ring body 2 of the embodiment of the present invention can be made of metal plates to improve the structural stiffness.

[0050] The axial direction of the rotor in the embodiment of the present invention is the left-right direction shown in the figure.

[0051] As Figure 3 shown, in some embodiments, the axial direction of the first hole 11 and the axial direction of the rotor have a first preset angle, and the end of the first hole 11 close to the movable blade 72 is inclined towards the centrifugal direction of the movable blade 72; the axial direction of the second hole 21 and the axial direction of the rotor have a second preset angle, and the end of the second hole 21 close to the movable blade 72 is inclined towards the centrifugal direction of the movable blade 72.

[0052] It should be understood that the axial directions of the first hole 11 and the second hole 21 are not parallel to the axial direction of the rotor, and the ends of the first hole 11 and the second hole 21 close to the movable blade 72 are both inclined towards the centrifugal direction of the movable blade 72, so that the acting forces of the first pressing member 3 and the second pressing member 4 on the movable blade 72 can lift the movable blade 72, simulating the actual working condition of the movable blade 72 under the centrifugal force during the engine operation, and more truly and accurately reflecting the state and position of the movable blade 72 under the actual working condition, improving the processing quality and precision of the movable blade 72.

[0053] In the first ring body 1 of the embodiment of the present invention, a plurality of first holes 11 are provided, and in the second ring body 2, a plurality of second holes 21 are provided. The first holes 11 and the second holes 21 are arranged in pairs, and each movable blade 72 corresponds to at least one first hole 11 and at least one second hole 21. When positioning the movable blade 72, the positioning accuracy of each movable blade 72 can be ensured, and the consistency is better.

[0054] As shown in FIGS. 1 to Figure 5 As shown, in some embodiments, the first hole 11 and the second hole 21 are diagonally arranged relative to the blade root 721 of the movable blade 72. By arranging the first hole 11 and the second hole 21 diagonally at the root of the blade root 721 of the movable blade 72, the movable blade 72 is tightly positioned in multiple directions by the first ring body 1, the second ring body 2, the first pressing member 3 and the second pressing member 4, which can effectively inhibit the circumferential swing of the movable blade 72, and can truly reflect the position and state of the movable blade 72 under the actual working condition. When grinding the movable blade 72, the positioning accuracy and stability of the movable blade 72 can be improved.

[0055] In the embodiment of the present invention, the blade root root 722 of the movable blade 72 is located at the transition section between the side surface and the end surface of the blade root 721. Through the counter-positioning support of the first pressing member 3 and the second pressing member 4, the radial movement and circumferential swing of the movable blade 72 in the rotor can be restricted, and the positioning constraint of the movable blade 72 can be realized with fewer components, improving the operation convenience and work efficiency.

[0056] Optionally, the first hole 11 and the second hole 21 are threaded holes, and the first pressing member 3 and the second pressing member 4 are bolts.

[0057] In some embodiments, the rotor movable blade processing and fixing device 100 further includes a first pressing component 5 and a second pressing component 6. The first pressing component 5 is connected to the blade disk 71 of the rotor and is used to abut against the end of the first ring body 1 away from the movable blade 72, and the second pressing component 6 is arranged between the blade disk 71 of the rotor and the second ring body 2 and is used to abut against the end of the second ring body 2 away from the movable blade 72.

[0058] That is to say, the first pressing member 5 of the embodiment of the present invention limits one end of the first ring body 1 away from the movable blade 72, and the second pressing member 6 limits one end of the second ring body 2 away from the movable blade 72, so that the rotor movable blade processing and positioning device 100 can be installed based on the disk 71, thereby realizing the fixation and positioning of the movable blade 72, improving the structural stability, and facilitating the fixation and positioning of the disk 71 and the movable blade 72 through the rotor movable blade processing and positioning device 100 and then the assembly connection with the processing equipment.

[0059] Figure 3 As shown, in some embodiments, the first pressing member 5 has a threaded hole, and the first pressing member 5 is connected to the external threaded section 712 on the disk 71 through the threaded hole.

[0060] It should be understood that one axial end of the disk 71 has an external threaded section 712. The embodiment of the present invention uses the external threaded section 712 to connect the first pressing member 5, and then supports the first ring body 1 through the first pressing member 5 to realize the positioning of the first ring body 1.

[0061] Optionally, the first pressing member 5 is a nut.

[0062] Furthermore, since the radial dimension of the first ring body 1 is relatively large, the first ring body 1 of the embodiment of the present invention has a circular ring section and a reduced-diameter section. The first abutting surface 12 is arranged on the circular ring section. The reduced-diameter section is connected to the side of the circular ring section away from the movable blade 72, and the radial dimension of the reduced-diameter section gradually decreases until the outer diameter dimension of the reduced-diameter section is slightly larger than the outer diameter dimension of the external threaded section 712 of the disk 71. After the first pressing member 5 is assembled onto the external threaded section 712, it can abut against the reduced-diameter section.

[0063] The reduced-diameter section is frustum-shaped.

[0064] As Figures 1 to 3 shown, in some embodiments, the second pressing member 6 includes a plurality of pressing ring pieces 61 arranged along the circumference and a plurality of third pressing members 63. The plurality of pressing ring pieces 61 are detachably connected. The pressing ring pieces 61 are provided with a plurality of third holes 62, and the third pressing members 63 are arranged in the third holes 62. The pressing ring pieces 61 have a third abutting surface 64, the third abutting surface 64 abuts against the end plate 711 of the disk 71, and the third pressing members 63 abut against the second ring body 2.

[0065] Since one axial end of the blisk 71 is provided with an external thread section 712 and the other axial end of the blisk 71 has a disc-shaped end plate 711, in the embodiment of the present invention, the second pressing member 6 and the end plate 711 are used to support and position the second ring body 2. Specifically, the pressing ring pieces 61 are multiple and can be connected into a ring. When installing, the pressing ring pieces 61 are first split and placed one by one on the side of the end plate 711 close to the movable blade 72, and then the multiple pressing ring pieces 61 are connected into one body. Adjacent two pressing ring pieces 61 are fixedly connected by bolts. At this time, the pressing ring piece 61 abuts against the end plate 711, thereby restricting the pressing ring piece 61 from moving away from the movable blade 72.

[0066] The pressing ring piece 61 is provided with a third hole 62, and a third pressing member 63 is arranged in the third hole 62. The third pressing member 63 can move along the axis direction of the rotor, so that the supporting force on the second ring body 2 can be adjusted. The second ring body 2 is pressed by multiple third pressing members 63, and further the first ring body 1 and the second ring body 2 clamp the movable blade 72.

[0067] Optionally, the third hole 62 is a threaded hole, the third pressing member 63 is a bolt, and the axis direction of the third hole 62 is parallel to the axis direction of the rotor.

[0068] Optionally, there are two pressing ring pieces 61, and the pressing ring pieces 61 are semi-circular.

[0069] In some embodiments, the pressing ring piece 61 has a sunk platform, the bottom surface of the sunk platform is a third abutting surface 64, and the circumferential side surface of the sunk platform is used to abut against the circumferential side surface of the end plate 711 in the middle of the blisk 71.

[0070] It should be understood that the sunk platform can play a role in positioning the pressing ring piece 61 axially and radially. When multiple pressing ring pieces 61 are connected together, an annular sunk platform will be formed, and the end plate 711 of the blisk 71 is arranged in the annular sunk platform. On the one hand, it can ensure that the pressing ring piece 61 does not move in the radial direction of the rotor, and on the other hand, it can ensure that the pressing ring piece 61 does not move in the axial direction of the rotor. While facilitating assembly, it improves the stability of the overall structure and also improves the accuracy of the supporting position of the multiple third pressing members 63 on the second ring body 2.

[0071] Optionally, as Figure 1 shown, the pressing ring piece 61 is provided with multiple convex platforms 65. The multiple convex platforms 65 are located inside the pressing ring piece 61 in the radial direction. One end surface of the convex platform 65 and the end surface of the pressing ring piece 61 form a stepped sunk platform. When multiple pressing ring pieces 61 are connected together, the convex platform 65 abuts against and limits the end plate 711 of the blisk 71, and the shoulder between the convex platform 65 and the pressing ring piece 61 abuts against and limits the circumferential side surface of the end plate 711.

[0072] In some embodiments, the tightening torques of the first tightening member 3 and the second tightening member 4 are from 0.5 N·m to 5 N·m. The tightening torques of the first tightening member 3 and the second tightening member 4 in the embodiments of the present invention can be 0.5 N·m, 0.63 N·m, 0.76 N·m, 1.8 N·m, 2.9 N·m, 4 N·m, and 5 N·m.

[0073] In the embodiments of the present invention, by controlling and quantifying the acting forces of the first tightening member 3 and the second tightening member 4, the reliability of the jacking of the movable blade 72 and the consistency of the machining deformation are ensured. During operation, the tightening torques of the first tightening member 3 and the second tightening member 4 are adjusted by a torque wrench.

[0074] When the tightening torques of the first tightening member 3 and the second tightening member are too small and less than 0.5 N·m, it is likely to result in poor reliability of the jacking of the movable blade 72, and there is a risk of the movable blade 72 moving or swinging during grinding, affecting the machining accuracy and consistency. When the tightening torques of the first tightening member 3 and the second tightening member 4 are too large and less than 5 N·m, it is likely to cause deformation of the movable blade 72, causing damage to the movable blade 72, and the consistency of blade machining and the stability of product machining quality cannot be ensured.

[0075] In the embodiments of the present invention, by quantifying and controlling the torque of the movable blade 72, multi-dimensional positioning of the movable blade 72 is performed, so that the state of the movable blade 72 is approximated to the working condition state under centrifugal force and airflow acting force during the engine operation condition. After grinding, the machining accuracy and machining quality of the movable blade 72 can be ensured, and the performance of the engine can be improved.

[0076] The method for machining and positioning the rotor movable blade 72 in the embodiments of the present invention uses the rotor movable blade machining and positioning device 100 in any one of the above embodiments to position the rotor movable blade 72, and includes the following steps:

[0077] S101. Connect the first ring body 1 to the blade disc 71 of the rotor. Specifically, the first ring body 1 is installed on one side in the axial direction of the blade disc 71 (i.e., the axial direction of the rotor), and the first pressing member 5 is used to pre-tighten the first ring body 1 so that its first abutting surface 12 is flush with the blade disc 71, thereby forming a positioning surface for assembling the movable blade 72 and ensuring the axial position of the assembled movable blade 72 is fixed.

[0078] S102. Install the movable blade 72 on the blade disc 71 and make the movable blade 72 abut against the first ring body 1; specifically, all the movable blades 72 are installed on the blade disc 71 so that one end of the movable blade 72, one end of the blade disc 71, and the first abutting surface 12 of the first ring body 1 are in the same plane, ensuring that when the movable blade 72 is assembled, the axial position of the movable blade 72 on the rotor is fixed.

[0079] S103, install the second ring body 2, and pre-tighten the first ring body 1 and the second ring body 2. Specifically, install the second ring body 2 on the other side of the blade disk 71, install the second clamping component 6, use the docking bolts to fix the two adjacent clamping ring pieces 61, and match the connected clamping ring pieces 61 with the end plate 711 of the blade disk 71 to make them embedded in the inside of the blade disk 71; use the third tensioning member 63 to pre-tighten the second ring body 2 axially, and at this time, the first clamping component 5 can be adjusted again to ensure that one end of the movable blade 72, one end of the blade disk 71, and the first abutting surface 12 of the first ring body 1 are on the same plane.

[0080] S104, based on the deformation simulation data of the movable blade 72, adjust the tightening torque of the first and second tightening members 3 and 4 to diagonally lift the movable blade 72. Specifically, the first and second ring bodies 1 and 2 are respectively provided with the first and second tightening members 3 and 4 corresponding to each movable blade 72; the axial direction of the first and second tightening members 3 and 4 is biased towards the centrifugal direction of the movable blade 72 when the engine is working, and the hole outlets of the first hole 11 on the first ring body 1 and the second hole 21 on the second ring body 2 correspond to the root 722 of the movable blade 72; first install one of the first and second tightening members 3 and 4, and pre-tighten; then install the other of the first and second tightening members 3 and 4, and pre-tighten, and lift and fix the movable blade 72 by adjusting the tightening torque of the first and second tightening members 4; after the first and second tightening members 3 and 4 on both sides are adjusted in place, the movable blade 72 is radially positioned and the circumferential swing is controlled.

[0081] The tightening torque of the first tightening member 3 and the second tightening member 4 is set based on the deformation simulation result, and is generally 0.5 to 5 N·m.

[0082] S105, tighten the first ring body 1 and the second ring body 2. By tightening the third pressing member 63 and the first pressing member 5, the first ring body 1 and the second ring body 2 clamp the movable blade 72 in the axial direction of the rotor, thereby achieving dimensional fixation and positioning of the movable blade 72 in multiple directions.

[0083] In the related art, the problems with the wooden wedge expansion method include: long device preparation period, lack of accurate blade fixing capability, random deviations caused by installation differences, and aging of the wood due to repeated use, which can easily cause it to become loose during processing.

[0084] The problems with the plasticine wrapping method include: the inability to accurately fix the blades, difficulty in cleaning the residual plasticine on the blade surface and seams, the inability to reuse the plasticine after mixing with the grinding fluid, the plasticine falling off in chunks when the workpiece rotates, and easy blocking of the grinding wheel, resulting in abnormal grinding.

[0085] The problems existing in the hemp rope binding method are: it does not have the ability to accurately fix the blade, there are significant deviations in the blade fixing effect and posture due to the differences in the binding method and strength, and it has relatively high technical requirements for workers.

[0086] The common defects of the above solutions are described as: inaccurate blade fixing, unstable effect, long installation and cleaning time, and non-reusability.

[0087] In the related technology, the inlet and exhaust edges of the movable blade 72 are also fixed by a slot positioning method, and the main purpose is to improve the overall rigidity of the blade. However, due to the need to consider installation interference, the slot depth is limited, the restraining force of the blade along the slot direction is insufficient, and the grinding component force that moves the blade is mainly along the inlet and exhaust edges. Therefore, the radial fixing effect of the movable blade 72 is poor.

[0088] Compared with the technical solutions in the related technology, the embodiment of the present invention performs top and limit positioning on the movable blade 72, so that the movable blade 72 with a rotor can accurately and reliably achieve jacking and positioning, with quick installation and reusability, thereby improving the reliability and stability in the processing process of the movable blade 72 and realizing high-quality and high-efficiency processing of the engine rotor.

[0089] The embodiment of the present invention realizes the jacking and positioning of the movable blade 72 by axially pressing and diagonally jacking the movable blade 72. The top and limit method simulates the engine operating conditions, and the positioning accuracy is greatly improved.

[0090] The embodiment of the present invention realizes the control and quantification of the top and limit force of the movable blade 72 through the control of the tightening torque. Further, by reasonably setting the axis angles and top and limit torques of the first top and tight member 3 and the second top and tight member 4, the top and limit force of the blade can be quantitatively controlled to be approximately equal to the centrifugal force under the engine operating conditions.

[0091] The embodiment of the present invention positions and clamps the blade root 721, does not block the area above the blade root 721, and can directly process other features of the movable blade 72 without disassembling the device. For example, directly turning and processing structures such as the side locking tab groove of the blade, which improves the practicability.

[0092] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship 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 of the present invention.

[0093] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0094] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. should be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0095] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0096] In the present invention, terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0097] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A rotor moving blade machining and positioning device, characterized in that, Comprising: A first annular body having a first abutting surface and a plurality of first holes, the plurality of first holes being arranged at intervals along the circumferential direction of the first annular body; A second annular body having a second abutting surface and a plurality of second holes, the plurality of second holes being arranged at intervals along the circumferential direction of the second annular body, the first annular body and the second annular body being arranged opposite to each other along the axial direction of the rotor, the first abutting surface and the second abutting surface being used for abutting against both ends of the blade root of the movable blade in the axial direction of the rotor; A first tightening member provided in the first hole; A second tightening member provided in the second hole, the first tightening member and the second tightening member being used for abutting against the root of the blade root of the movable blade; A first preset angle is formed between the axial direction of the first hole and the axial direction of the rotor, and one end of the first hole close to the movable blade is inclined towards the centrifugal direction of the movable blade; A second preset angle is formed between the axial direction of the second hole and the axial direction of the rotor, and one end of the second hole close to the movable blade is inclined towards the centrifugal direction of the movable blade; It further includes a first pressing member and a second pressing member, the first pressing member is connected to the disk of the rotor and is used for abutting against one end of the first annular body away from the movable blade, and the second pressing member is provided between the disk of the rotor and the second annular body and is used for abutting against one end of the second annular body away from the movable blade; The second pressing member includes a plurality of pressing ring plates arranged in a circumferential manner and a plurality of third tightening members, the plurality of pressing ring plates are detachably connected, the pressing ring plates are provided with a plurality of third holes, the third tightening members are provided in the third holes, the pressing ring plates have a third abutting surface, and the third abutting surface is used for abutting against the end plate on the disk, and the third tightening members abut against the second annular body; The first hole and the second hole are threaded holes, and the first tightening member and the second tightening member are bolts.

2. The rotor movable blade machining topping device according to claim 1, characterized in that, The first hole and the second hole are diagonally arranged with respect to the blade root of the movable blade.

3. The rotor moving blade machining top fixing device according to claim 1, characterized in that, The first pressing member has a threaded hole, and the first pressing member is connected to the external threaded section on the disk through the threaded hole.

4. The rotor moving blade machining presetting device according to claim 3, characterized in that, The first pressing member is a nut.

5. The rotor moving blade machining topping device according to claim 1, characterized in that, The pressing ring plate has a counterbore, the bottom surface of the counterbore is the third abutting surface, and the circumferential side surface of the counterbore is used for abutting against the circumferential side surface of the end plate on the disk.

6. The rotor movable blade machining and positioning device according to claim 1, characterized in that, The tightening torque of the first tightening member and the second tightening member is 0.5 N·m to 5 N·m.

7. A processing and positioning method for the rotor moving blades, characterized in that, Using the rotor movable blade processing and fixing device according to any one of claims 1 to 6 for positioning the rotor movable blade, comprising the following steps: Connect the first annular body to the disk of the rotor; Install the movable blade on the disk and make the movable blade abut against the first annular body; Install the second annular body and pre-tighten the first annular body and the second annular body; Based on the deformation simulation data of the movable blade, adjust the tightening torque of the first tightening member and the second tightening member to perform diagonal jacking on the movable blade; Fasten the first annular body and the second annular body.

Images