Rotor movable blade machining jacking device and method

Abstract

The invention discloses a rotor movable blade machining jacking device and method.The rotor movable blade machining jacking device comprises a first ring body, a second ring body, a first jacking piece and a second jacking piece, the first ring body is provided with a first abutting face and a plurality of first holes, and the first holes are formed in the circumferential direction of the first ring body at intervals; the first ring body is provided with a first abutting face and a plurality of first holes, the second ring body is provided with a second abutting face and a plurality of second holes, the second holes are formed in the circumferential direction of the second ring body at intervals, the first ring body and the second ring body are oppositely arranged in the axis direction of the rotor, and the first abutting face and the second abutting face are used for abutting against the two ends, in the axis direction of the rotor, of the blade roots of the movable blades; the first jacking piece is arranged in the first hole, the second jacking piece is arranged in the second hole, and the first jacking piece and the second jacking piece are used for abutting against the blade root of the movable blade. Axial and radial positioning of the movable blade can be achieved, circumferential swing is limited, and machining stability and machining precision are improved.

Description

Technical Field

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

[0002] The impeller and movable blades of the split engine rotor are assembled separately. The movable blades are not accurately positioned after assembly and have irregular axial movement, radial movement and circumferential swing. When grinding the movable blades, the impeller is fixed on the rotating axis of the grinder workpiece, and an external cylindrical grinding wheel or an internal cylindrical grinding wheel is used to grind the tip of the movable blade. Due to the grinding force, the movable blades will shake during processing, and a supporting structure or high-speed centrifugal force is required to maintain their maximum outer diameter working condition.

[0003] In the related art, before the blade tip is ground, the blades are fixed and vibration-damped by means of wooden wedges, plasticine wrapping, hemp rope tying, etc. However, the above schemes have defects such as inaccurate blade fixation, unstable effect, long installation and cleaning time, and non-reusability. In the related art, the inlet and exhaust edges of the blades are restricted and constrained by tooling, but the radial constraint effect on the movable blades is not good. Summary of the invention

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

[0005] To this end, an embodiment of the present invention proposes a rotor movable blade machining positioning device that realizes axial and radial positioning of the movable blade, limits circumferential swing, and improves machining stability and machining accuracy.

[0006] The embodiment of the present invention further provides a method for machining and fixing a rotor movable blade.

[0007] The rotor movable blade machining and fixing device according to the embodiment of the present invention comprises:

[0008] A first ring body, wherein 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 circumference of the first ring body;

[0009] a second ring body, wherein the second ring body has a second abutting surface and a plurality of second holes, the plurality of second holes are arranged at intervals along the circumference of the second ring body, the first ring body and the second ring body are arranged opposite to each other along the axial direction of the rotor, and the first abutting surface and the second abutting surface are used to abut against both ends of the blade root of the movable blade in the axial direction of the rotor;

[0010] a first pressing member, wherein the first pressing member is disposed in the first hole;

[0011] The second pressing member is arranged in the second hole, and the first pressing member and the second pressing member are used to abut against the root of the movable blade.

[0012] The present invention can achieve axial and radial positioning of movable blades, limit circumferential swing, and improve processing stability and processing accuracy. The installation process of the rotor movable blade processing fixing device in 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 no obstruction is formed on the area above the root of the blade, which makes it possible to directly process other features of the blade without disassembling the device, and the practicality is better.

[0013] In some embodiments, there is a first preset angle between the axis direction of the first hole and the axis direction of the rotor, and an end of the first hole close to the movable blade is inclined toward the centrifugal direction of the movable 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 movable blade is inclined toward the centrifugal direction of the movable blade.

[0015] In some embodiments, the first hole and the second hole are arranged diagonally relative to a blade root of the movable blade.

[0016] In some embodiments, it also includes a first clamping component and a second clamping component, the first clamping component is connected to the rotor blade disk and is used to abut against the end of the first ring body away from the movable blades, and the second clamping component is arranged between the rotor blade disk and the second ring body and is used to abut against the end of the second ring body away from the movable blades.

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

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

[0019] In some embodiments, the second clamping component includes a plurality of clamping ring sheets and a plurality of third clamping members arranged along the circumference, the plurality of clamping ring sheets are detachably connected, a plurality of third holes are provided on the clamping ring sheets, the third clamping members are provided in the third holes, the clamping ring sheets have a third abutting surface, the third abutting surface is used to abut against the end plate on the blade disk, and the third clamping member abuts against the second ring body.

[0020] In some embodiments, the clamping ring has a sink, the bottom surface of the sink is the third abutting surface, and the circumferential side surface of the sink is used to abut against the circumferential side surface of the end plate of the blade disk.

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

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

[0023] Connecting the first ring to the blade disk of the rotor;

[0024] Installing movable blades on the blade disk, and making the movable blades abut against the first ring body;

[0025] Installing the second ring body, and pre-tightening the first ring body and the second ring body;

[0026] Based on the deformation simulation data of the movable blade, adjusting the fastening torque of the first fastening member and the second fastening member to diagonally lift the movable blade;

[0027] The first ring body and the second ring body are fastened. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an exploded view of a rotor movable blade machining and fixing device according to an embodiment of the present invention.

[0029] Figure 2 It is an assembly diagram of a rotor movable blade machining and fixing device according to an embodiment of the present invention.

[0030] Figure 3 It is a schematic cross-sectional structural diagram of a rotor movable blade machining and fixing device according to an embodiment of the present invention.

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

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

[0033] Reference numerals:

[0034] 100. Rotor movable blade machining and fixing 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. The first tightening member;

[0038] 4. The second tightening member;

[0039] 5. A first pressing member;

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

[0041] 71. blade disk; 711. end plate; 712. external threaded section; 72. movable blade; 721. blade root; 722. root of blade root. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0043] The following combination Figures 1 to 5 The rotor movable blade machining and fixing device and method according to the embodiment of the present invention are described in detail.

[0044] like Figure 1-Figure 3 As shown, a rotor movable blade machining fixing device 100 according to an embodiment of the present invention comprises 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, and the plurality of first holes 11 are arranged at intervals along the circumference of the first ring body 1. The second ring body 2 has a second abutting surface 22 and a plurality of second holes 21, and the plurality of second holes 21 are arranged at intervals along the circumference 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 the two 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, and the second pressing member 4 is arranged in the second hole 21. The first pressing member 3 and the second pressing member 4 are used to abut against the root portion 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 are respectively supported at 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 are abutted against the blade root 721 of the movable blade 72, thereby realizing the positioning of the movable blade 72 in the axial direction of the rotor, and suppressing the irregular axial movement of the movable blade 72 in the axial direction of the rotor. At the same time, it can simulate the working condition that the movable blade 72 is axially positioned to one end flat after being subjected to the reaction force of the airflow, so that multiple movable blades 72 are abutted against the abutment 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 tightening member 3 and the second tightening member 4 support the root portion 722 of the movable blade 72, so as to constrain and position the position of the movable blade 72 in the radial direction of the rotor, suppress the radial movement of the movable blade 72 in the rotor, and make the blade in the maximum outer diameter state, thereby simulating the actual working condition of the blade being subjected to centrifugal force when the engine is running. At the same time, the movable blade 72 is tightened and positioned in multiple directions by the first ring body 1, the second ring body 2, the first tightening member 3 and the second tightening member 4, which can also suppress the circumferential swing of the movable blade 72, thereby improving the positioning accuracy and stability of the movable blade 72.

[0047] The present invention can achieve axial and radial positioning of the movable blade 72, limit circumferential swing, and improve processing stability and processing accuracy. The installation process of the rotor movable blade processing fixing device 100 of 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 no obstruction is formed on the area above the root of the blade, which provides the possibility of directly processing other features of the blade without disassembling the device, and has better practicality.

[0048] Furthermore, at least one of the first ring body 1 and the second ring body 2 abuts against the end face of the blade disk 71 in the axial direction of the rotor. Furthermore, the blade 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. When assembled, one end of the movable blade 72 in the axial direction of the rotor and one end of the blade 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 engine working condition.

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

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

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

[0052] It should be understood that the axial direction of the first hole 11 and the axial direction of the second hole 21 are not parallel to the axial direction of the rotor, and the end of the first hole 11 close to the movable blade 72 and the end of the second hole 21 close to the movable blade 72 are both inclined toward the centrifugal direction of the movable blade 72, so that the force of the first tightening member 3 and the second tightening member 4 acting 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 in the engine working state, and more realistically and accurately reflecting the state and position of the movable blade 72 under the actual working condition, thereby improving the processing quality and processing accuracy of the movable blade 72.

[0053] In the embodiment of the present invention, a plurality of first holes 11 are arranged on the first ring body 1, and a plurality of second holes 21 are arranged on the second ring body 2. 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 guaranteed, and the consistency is better.

[0054] As 1 to Figure 5 As shown, in some embodiments, the first hole 11 and the second hole 21 are arranged diagonally 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 tightened and positioned in multiple directions by the first ring body 1, the second ring body 2, the first tightening member 3 and the second tightening member 4, which can effectively suppress the circumferential swing of the movable blade 72, can truly reflect the position and state of the movable blade 72 under actual working conditions, and can improve the positioning accuracy and stability of the movable blade 72 when the movable blade 72 is ground.

[0055] The blade root portion 722 of the movable blade 72 in the embodiment of the present invention is located at the transition section between the side surface of the blade root 721 and the end surface of the blade root 721. Through the alignment and supporting of the first tightening member 3 and the second tightening member 4, the radial movement and circumferential swing of the movable blade 72 on the rotor can be limited, and the positioning constraint of the movable blade 72 can be achieved with fewer parts, thereby improving the convenience of operation and work efficiency.

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

[0057] In some embodiments, the rotor movable blade processing fixing device 100 also includes a first clamping component 5 and a second clamping component 6. The first clamping component 5 is connected to the rotor blade disk 71 and is used to abut against the end of the first ring body 1 away from the movable blade 72. The second clamping component 6 is arranged between the rotor blade disk 71 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 clamping component 5 of the embodiment of the present invention limits the end of the first ring body 1 away from the movable blade 72, and the second clamping component 6 limits the end of the second ring body 2 away from the movable blade 72, so that the rotor movable blade processing fixing device 100 can be installed based on the blade disk 71, thereby realizing the fixation and positioning of the movable blade 72, improving the stability of the structure, and facilitating the fixation and positioning of the blade disk 71 and the movable blade 72 by the rotor movable blade processing fixing device 100 and then connecting them with the assembly of the processing equipment.

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

[0060] It should be understood that one axial end of the blade disk 71 has an external thread section 712 , and the embodiment of the present invention utilizes the external thread section 712 to connect the first clamping component 5 , and then supports the first ring body 1 through the first clamping component 5 to achieve positioning of the first ring body 1 .

[0061] Optionally, the first pressing component 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 segment and a reducing section, the first abutment surface 12 is arranged on the circular ring segment, the reducing section is connected to the side of the circular ring segment away from the movable blade 72, and the radial dimension of the reducing section gradually decreases until the outer diameter of the reducing section is slightly larger than the outer diameter of the external thread section 712 of the blade disk 71. When the first clamping component 5 is assembled on the external thread section 712, it can abut against the reducing section.

[0063] The reducing section is in the shape of a frustum.

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

[0065] Since one axial end of the blade disk 71 is provided with an external thread section 712 and the other axial end of the blade disk 71 is provided with a disc-shaped end plate 711, the embodiment of the present invention uses the second clamping component 6 and the end plate 711 to support and position the second ring body 2. Specifically, the clamping ring piece 61 is multiple pieces and can be connected into a circular ring. When installing, the clamping ring piece 61 is 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 clamping ring pieces 61 are connected as one, and the adjacent two clamping ring pieces 61 are fixed by bolts. At this time, the clamping ring piece 61 abuts against the end plate 711, thereby limiting the movement of the clamping ring piece 61 in the direction away from the movable blade 72.

[0066] A third hole 62 is provided on the clamping ring 61, and a third pressing member 63 is provided in the third hole 62. The third pressing member 63 can move along the axial direction of the rotor, so as to adjust the supporting force on the second ring body 2. A plurality of third pressing members 63 are used to tighten the second ring body 2, thereby enabling the first ring body 1 and the second ring body 2 to clamp the movable blade 72.

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

[0068] Optionally, there are two clamping ring pieces 61 , and the clamping ring pieces 61 are semicircular.

[0069] In some embodiments, the clamping ring 61 has a depression, the bottom surface of the depression is the third abutting surface 64 , and the circumferential side surface of the depression is used to abut against the circumferential side surface of the middle end plate 711 of the blade disk 71 .

[0070] It should be understood that the sinker can play a role in axial and radial positioning of the clamping ring 61. When multiple clamping rings 61 are connected together, an annular sinker will be formed. The end plate 711 of the blade disk 71 is arranged in the annular sinker. On the one hand, it can ensure that the clamping ring 61 does not move in the radial direction of the rotor. On the other hand, it can ensure that the clamping ring 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 multiple third clamping members 63 on the second ring body 2.

[0071] Alternatively, if Figure 1 As shown, a plurality of bosses 65 are provided on the clamping ring 61, and the plurality of bosses 65 are located on the inner side of the clamping ring 61 in the radial direction, and a step-shaped depression is formed between one end face of the boss 65 and the end face of the clamping ring 61. When the plurality of clamping rings 61 are connected together, the boss 65 abuts against the end plate 711 of the blade disk 71 for limiting position, and the shoulder between the boss 65 and the clamping ring 61 abuts against the circumferential side face of the end plate 711 for limiting position.

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

[0073] The embodiment of the present invention ensures the reliability of lifting the movable blade 72 and the consistency of processing deformation by controlling and quantifying the forces of the first jacking member 3 and the second jacking member 4. During operation, the tightening torque of the first jacking member 3 and the second jacking member 4 is adjusted by a torque wrench.

[0074] When the tightening torque of the first top fastener 3 and the second top fastener 4 is too small and less than 0.5 N·m, it is easy to cause poor lifting reliability of the movable blade 72, and there is a risk of movement or swing of the movable blade 72 during grinding, affecting the processing accuracy and consistency. When the tightening torque of the first top fastener 3 and the second top fastener 4 is too large and less than 5 N·m, it is easy to cause deformation of the movable blade 72 and damage the movable blade 72, and the blade processing consistency and product processing quality stability cannot be guaranteed.

[0075] The embodiment of the present invention positions the movable blade 72 in multiple dimensions by quantitatively controlling the torque of the movable blade 72, so that the state of the movable blade 72 is similar to the working state under the centrifugal force and airflow force under the engine operating condition. After the grinding process, the processing accuracy and processing quality of the movable blade 72 can be guaranteed, thereby improving the performance of the engine.

[0076] The method for machining and positioning the rotor movable blade 72 according to the embodiment of the present invention uses the rotor movable blade machining and positioning device 100 according to 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 disk 71 of the rotor. Specifically, install the first ring body 1 on one side of the axial direction of the blade disk 71 (i.e., the axial direction of the rotor), and use the first clamping component 5 to pre-tighten the first ring body 1 so that its first abutting surface 12 is flush with the blade disk 71, thereby forming a positioning surface for assembling the movable blade 72, and ensuring that the axial position of the assembled movable blade 72 is fixed.

[0078] S102, install the movable blades 72 on the blade disk 71, and make the movable blades 72 abut against the first ring body 1; specifically, install all the movable blades 72 on the blade disk 71, so 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, to ensure that when the movable blades 72 are assembled, the movable blades 72 are fixed in the axial position of the rotor.

[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 with the hemp rope binding method include: it does not have the ability to accurately fix the blades, there are significant deviations in the blade fixing effect and posture due to differences in binding methods and strength, and it has high technical requirements for workers.

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

[0087] In the related art, the inlet and outlet edges of the movable blade 72 are fixed by slot positioning, the main purpose of which is to improve the overall rigidity of the blade. However, due to the need to consider installation interference, the slot depth is limited, the blade restriction force along the slot direction is insufficient, and the grinding force that makes the blade active is mainly along the inlet and outlet edge direction, so the radial fixing effect of the movable blade 72 is poor.

[0088] Compared with the technical solutions in the related art, the embodiment of the present invention performs jacking and limiting on the movable blades 72, so that the movable blades 72 with the rotor can be accurately and reliably lifted and positioned, and can be installed quickly and reused, thereby improving the reliability and stability of the processing of the movable blades 72 and achieving high-quality and high-efficiency processing of the engine rotor.

[0089] The embodiment of the present invention realizes lifting and positioning of the movable blade 72 by axially pressing and diagonally lifting the movable blade 72. The lifting method simulates the operating condition of the engine and greatly improves the positioning accuracy.

[0090] The embodiment of the present invention realizes the control and quantification of the fixing force of the movable blade 72 through the tightening torque control. Furthermore, by reasonably setting the axial angle and the fixing torque of the first tightening member 3 and the second tightening member 4, the blade fixing force can be quantified and controlled to be approximately equal to the centrifugal force under the engine operating condition.

[0091] The embodiment of the present invention positions and clamps the blade root 721 without blocking the area above the blade root 721. Other features of the movable blade 72 can be directly processed without disassembling the device, for example, structures such as the locking baffle groove on the side of the blade can be directly machined, thereby improving practicality.

[0092] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0093] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0094] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, 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 specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0096] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction 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 described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0097] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A rotor movable blade machining and fixing device, characterized in that: include: A first ring body, wherein 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 circumference of the first ring body; a second ring body, wherein the second ring body has a second abutting surface and a plurality of second holes, the plurality of second holes are arranged at intervals along the circumference of the second ring body, the first ring body and the second ring body are arranged opposite to each other along the axial direction of the rotor, and the first abutting surface and the second abutting surface are used to abut against both ends of the blade root of the movable blade in the axial direction of the rotor; a first pressing member, wherein the first pressing member is disposed in the first hole; The second pressing member is arranged in the second hole, and the first pressing member and the second pressing member are used to abut against the root of the movable blade.

2. The rotor movable blade machining and fixing device according to claim 1, characterized in that: There is a first preset angle between the axis direction of the first hole and the axis direction of the rotor, and one end of the first hole close to the movable blade is inclined toward the centrifugal direction of the movable blade; 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 movable blade is inclined toward the centrifugal direction of the movable blade.

3. The rotor movable blade machining and fixing device according to claim 1, characterized in that: The first hole and the second hole are arranged diagonally relative to a blade root of the movable blade.

4. The rotor movable blade machining and fixing device according to claim 1, characterized in that: It also includes a first clamping component and a second clamping component. The first clamping component is connected to the rotor blade disk and is used to abut against the end of the first ring body away from the movable blades. The second clamping component is arranged between the rotor blade disk and the second ring body and is used to abut against the end of the second ring body away from the movable blades.

5. The rotor movable blade machining and fixing device according to claim 4, characterized in that: The first pressing component has a threaded hole, and the first pressing component is connected to the external thread section on the blade disk through the threaded hole.

6. The rotor movable blade machining and fixing device according to claim 5, characterized in that: The first pressing component is a nut.

7. The rotor movable blade machining and fixing device according to claim 4, characterized in that: The second clamping component includes a plurality of clamping ring sheets and a plurality of third clamping members arranged along the circumference, the plurality of clamping ring sheets are detachably connected, a plurality of third holes are provided on the clamping ring sheets, the third clamping members are arranged in the third holes, the clamping ring sheets have a third abutting surface, the third abutting surface is used to abut against the end plate on the blade disk, and the third clamping member abuts against the second ring body.

8. The rotor movable blade machining and fixing device according to claim 7, characterized in that: The clamping ring sheet has a sink, the bottom surface of the sink is the third abutting surface, and the circumferential side surface of the sink is used to abut against the circumferential side surface of the upper end plate of the blade disk.

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

10. A method for machining and fixing a rotor movable blade, characterized in that: The positioning of the rotor movable blades by using the rotor movable blade processing and positioning device according to any one of claims 1 to 9 comprises the following steps: Connecting the first ring to the blade disk of the rotor; Installing movable blades on the blade disk, and making the movable blades abut against the first ring body; Installing the second ring body, and pre-tightening the first ring body and the second ring body; Based on the deformation simulation data of the movable blade, adjusting the fastening torque of the first fastening member and the second fastening member to diagonally lift the movable blade; The first ring body and the second ring body are fastened.

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