Aircraft engine blade profile detection system

Abstract

The invention belongs to the technical field of engine blade detection, and particularly relates to an aero-engine blade profile detection system, which comprises a base, a rotating disc, a supporting mandrel and a profile template, and is characterized in that the rotating disc is rotatably arranged on the base, and a positioning tool for clamping a stator blade is arranged on the rotating disc; the molded surface sample plate comprises a plurality of back molded surface sample plates and front molded surface sample plates which are arranged on the supporting mandrel; the plurality of back surface molded surface templates and the plurality of front surface molded surface templates are respectively arranged on two sides of the positioning tool, the back surface molded surface templates can rotate to be attached to the back surface of the stator blade to be measured, and the front surface molded surface templates can rotate to be attached to the front surface of the stator blade to be measured. Detection is carried out by manufacturing a molded surface sample plate, a special blade molded surface detection system is designed, the molded surface sample plate is manufactured and detection is carried out by adopting an optical gap method according to the structural characteristics of the first-stage stator blade, the operation is simple and rapid, and the measurement requirement can be completely met at present.

Description

Technical Field

[0001] The present invention belongs to the technical field of engine blade detection, and particularly relates to a detection system for the profile of an aero-engine blade. Background Art

[0002] Some parts of the first-stage stator blades of a certain type of aero-engine are thin. When in use, the first-stage stator blades are in a high-temperature working state. When the first-stage stator blades reach the major overhaul period, the blades are deformed. During major overhaul, it is necessary to repair the profile of the first-stage stator blades. After the first-stage stator blades are repaired, it is necessary to detect the profile dimensions at multiple cross-sections of the first-stage stator blades.

[0003] The cross-section profile dimension of the first-stage stator blade is the dimension of one circle around the corresponding profile relative to the coordinate origin, and it cannot be directly measured by conventional measurement methods.

[0004] Currently, a 3D scanning measuring instrument or a 3D imaging measuring instrument is used to construct the three-dimensional shape of the product, and then the computer analyzes the image, extracts the feature points on the product surface, calculates the coordinates of the feature points to obtain the required dimensions, or uses a coordinate measuring machine for measurement. Using a 3D scanning measuring instrument, a 3D imaging measuring instrument, and a coordinate measuring machine is costly, has high requirements for the measurement environment, and has high requirements for operators in the later measurement processing. It is impossible to perform on-site dimension measurement, the measurement is time-consuming, and the work efficiency is low. Summary of the Invention

[0005] In view of the technical problems existing in the background art, the present invention provides a detection system for the profile of an aero-engine blade.

[0006] To achieve the above object, the technical solution provided by the present invention is as follows:

[0007] A detection system for the profile of an aero-engine blade, comprising a base, a rotating disk, a supporting mandrel, and a profile template. The rotating disk is rotatably arranged on the base, and a positioning tooling for clamping the stator blade is arranged on the rotating disk. The profile template includes a plurality of back-profile templates and front-profile templates arranged on the supporting mandrel. The back-profile templates are consistent with the back-profile dimensions of the stator blade, and the front-profile templates are consistent with the front-profile dimensions of the stator blade. A plurality of the back-profile templates and a plurality of the front-profile templates are respectively arranged on both sides of the positioning tooling. The back-profile templates can rotate to fit the back of the stator blade to be measured, and the front-profile templates can rotate to fit the front of the stator blade to be measured.

[0008] Optionally, the positioning tooling includes a first clamping block and a second clamping block. A first installation groove is formed at the upper end of the rotating disk. The first clamping block is arranged inside the first installation groove. The second clamping block is slidably arranged in the first installation groove and sleeved outside the first clamping block. A stator vane base is arranged at the bottom side of the stator vane. A journal is arranged at the bottom side of the stator vane base. The stator vane base is supported on the upper end surfaces of the first clamping block and the second clamping block, and the first clamping block and the second clamping block are close to each other to clamp the journal.

[0009] Optionally, a positioning plane is arranged at one side of the stator vane base. The positioning tooling further includes a tightening block which is slidably arranged in the first installation groove and abuts against the positioning plane.

[0010] Optionally, a positioning column is arranged at the bottom side of the journal, and a positioning hole is arranged at the bottom side of the first installation groove. The positioning column is cooperatively arranged in the positioning hole.

[0011] Optionally, the positioning tooling further includes a pressing block. A second installation groove communicating with the first installation groove is formed at the upper end of the rotating disk. The pressing block is arranged in the second installation groove. A tightening screw is threadedly connected inside the pressing block, and the end of the tightening screw abuts against the tightening block. First sliding rods are arranged at both sides of the tightening block and slidably arranged in the inner hole of the pressing block. A first spring is sleeved on the first sliding rods between the pressing block and the tightening block.

[0012] Optionally, an adjusting screw is arranged at one end of the second clamping block and penetrates through the inner hole of the pressing block. An adjusting nut is arranged on the adjusting screw. A second sliding rod is arranged inside the rotating disk. One end of the second sliding rod is arranged in the first installation groove and slidably arranged in the inner hole of the second clamping block. A second spring is sleeved on the second sliding rods between the second clamping block and the first installation groove.

[0013] Optionally, the clamping grooves of the first clamping block and the second clamping block are arranged in a V shape.

[0014] Optionally, a positioning sleeve is detachably arranged on the base. The rotating disk is rotatably arranged in the inner hole of the positioning sleeve. A connecting screw is arranged at the bottom end of the rotating disk and penetrates through the bottom side of the base. A flat washer and a first locking nut are arranged on the connecting screw.

[0015] Optionally, an installation shaft is arranged at the upper end of the supporting mandrel. A plurality of profile templates are arranged on the installation shaft, and adjacent profile templates are separated by adjusting washers. The top end of the installation shaft presses the profile templates through an elastic washer and a second locking nut.

[0016] The present invention has the following advantages and beneficial effects:

[0017] In the present invention, in order to perform profile detection quickly, accurately and simply at the production site, a method of making a profile template is adopted for detection. According to the structural characteristics of the first-stage stator blades, a special blade profile detection system is designed, and a profile template is made and set on both sides of the stator blade tooling, which can be respectively fitted to the front and back profiles of the stator blades for detection. After fitting, the light gap method is used for detection, which is simple and fast to operate and can fully meet the measurement requirements at present. Moreover, for the shape and structure of the stator blades, a corresponding clamping tooling is designed. After quickly determining the position of the blade axis, the positioning plane of the blade is tightened to ensure that the blade is completely fixed on the fixture body, realizing accurate and stable positioning and clamping. Description of the Drawings

[0018] Figure 1 is one of the structural diagrams of the blade profile detection system in the present invention;

[0019] Figure 2 is the second structural diagram of the blade profile detection system in the present invention;

[0020] Figure 3 is Figure 1 the front view of

[0021] Figure 4 is Figure 1 the top view of

[0022] Figure 5 is Figure 3 the left view of

[0023] Figure 6 is Figure 5 the sectional view of along the A-A direction in

[0024] Figure 7 is the front view of the blade profile detection system in the present invention;

[0025] Figure 8 is Figure 7 the sectional view of along the B-B direction in

[0026] Figure 9 is Figure 7 the sectional view of along the C-C direction in

[0027] Figure 10 is the structural diagram of the rotating disk in the present invention;

[0028] Figure 11 is Figure 10 the top view of

[0029] Figure 12 is one of the structural diagrams of the second clamping block in the present invention;

[0030] Figure 13 It is the second structural diagram of the second clamping block in the present invention;

[0031] Figure 14 It is the first structural diagram of the pressing block in the present invention;

[0032] Figure 15 It is the second structural diagram of the pressing block in the present invention;

[0033] Figure 16 It is the structural diagram of the stator vane in the present invention;

[0034] Figure 17 It is Figure 16 the top view of;

[0035] Figure 18 It is the structural diagram of the stator vane clamped by the vane profile detection system in the present invention;

[0036] Figure 19 It is the top view of the vane profile detection system in the present invention.

[0037] Reference numerals: 1 - base, 11 - central hole, 12 - adjusting screw, 13 - locking nut, 2 - positioning sleeve, 21 - positioning cylinder, 22 - hexagon socket head screw, 3 - rotating disk, 31 - connecting screw rod, 311 - first locking nut, 312 - flat washer, 32 - first installation groove, 321 - third sliding hole, 322 - positioning hole, 33 - second installation groove, 34 - first clamping block, 341 - first clamping groove, 35 - first threaded hole, 36 - first pin hole, 4 - second clamping block, 41 - adjusting screw rod, 411 - adjusting nut, 42 - limiting groove, 43 - fourth sliding hole, 44 - square through slot, 45 - second clamping groove, 46 - spring groove, 47 - first sliding hole, 48 - second sliding rod, 49 - second spring, 5 - pressing block, 51 - connecting block, 52 - screw rod through hole, 53 - second sliding hole, 54 - first slot, 55 - second threaded hole, 56 - second pin hole, 57 - counterbore, 58 - first pin shaft, 59 - first countersunk head screw, 6 - tightening block, 61 - tightening screw rod, 62 - lever, 63 - first sliding rod, 64 - first spring, 7 - supporting mandrel, 71 - fixing screw rod, 72 - mounting shaft, 73 - adjusting washer, 74 - second locking nut, 741 - elastic gasket, 75 - third locking nut, 8 - profile template, 9 - stator vane, 91 - stator vane base, 92 - journal, 93 - positioning post, 94 - positioning plane. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0039] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] As Figures 1 to 19 shown, an aero-engine blade profile detection system includes a base 1, a rotating disk 3, a supporting mandrel 7, a profile template 8, a stator blade to be measured 9, etc.

[0042] As Figure 16 and Figure 17 shown, the cross-sectional profile dimensions of the first-stage stator blade 9 are the dimensions around the corresponding profile relative to the coordinate origin for one circle, and cannot be directly measured by conventional measurement methods.

[0043] The present system designs a special detection device to detect multiple profiles of the cross-section of the first-stage stator blade 9. In order to perform profile detection quickly, accurately, and simply at the production site, a profile template 8 is made and the light gap method is used for detection.

[0044] As Figures 1 to 19 shown, a rotating disk 3 is rotatably provided on the base 1, and a positioning tooling for clamping the stator blade 9 is provided on the rotating disk 3; the profile template 8 includes a plurality of back profile templates and front profile templates provided on the supporting mandrel 7, the back profile templates are the same as the back profile dimensions of the stator blade 9, and the front profile templates are the same as the front profile dimensions of the stator blade 9; a plurality of back profile templates and a plurality of front profile templates are respectively provided on both sides of the positioning tooling, the back profile templates can rotate to fit the back of the stator blade 9 to be measured, and the front profile templates can rotate to fit the front of the stator blade 9 to be measured. The profile template 8 is successively fitted on the profile of the stator blade 9, and the light gap method is used for detection, which is simple and fast to operate and can fully meet the measurement requirements at present.

[0045] When detecting the stator blade 9 to be measured, a plurality of corresponding profile templates 8 need to be made according to its multiple profiles. For example: it is necessary to detect the profile dimensions at positions Ⅰ-Ⅶ of the cross-section of the first-stage stator blade 9, that is, the cross-section of the first-stage stator blade 9 is divided into seven profiles along the height direction, so seven front and back profile templates 8 need to be set, referring to Figure 1 and Figure 3, there are seven back surface templates 8 and seven front surface templates 8 respectively. The seven back surface templates 8 respectively correspond to the back surfaces at the corresponding cross-sections of the first-stage stator blades 9, and the seven front surface templates 8 respectively correspond to the front surfaces at the corresponding cross-sections of the first-stage stator blades 9.

[0046] Embodiment 2

[0047] In this embodiment, the positioning tooling is further designed to ensure accurate positioning and clamping of the stator blades 9.

[0048] As Figure 1 and Figure 2 shown, the base 1 serves as the main body of the clamping fixture, and all parts are integrated on the base 1. Adjusting screws 12 are designed under the base 1 for adjusting the height of the blade, and the upper plane of the base 1 can be adjusted to the horizontal state. The locking nut 13 is used to lock the position of the adjusting screw 12 after the adjustment is completed to maintain the adjusted state of the base 1.

[0049] As Figures 1 to 3 , Figure 9 and Figure 19 shown, a positioning sleeve 2 is detachably arranged on the base 1. Specifically: a central hole 11 is provided in the center of the base 1, a positioning cylinder 21 is integrally provided at the bottom end of the positioning sleeve 2, the positioning cylinder 21 is arranged in the central hole 11, the positioning sleeve 2 is closely arranged on the upper end surface of the base 1, the positioning sleeve 2 serves as a reference for fixing the axis of the first-stage stator blade 9, and is fixed to the base 1 with an internal hexagon screw 22. A rotating disk 3 is rotatably arranged in the inner hole of the positioning sleeve 2. The rotating disk 3 serves as the main structure for fixing the stator blade 9. A connecting screw 31 is provided at the bottom end of the rotating disk 3. The bottom end of the rotating disk 3 is inserted into the hole of the positioning sleeve 2 and is coaxial with the positioning sleeve 2. The connecting screw 31 passes through the bottom side of the base 1, and a flat washer 312 and a first locking nut 311 are arranged on the connecting screw 31. The rotating disk 3 is axially positioned under the base 1 with the flat washer 312 and the first locking nut 311. After the first locking nut 311 is tightened to fix the rotating disk 3, the rotating disk 3 can rotate.

[0050] As Figures 1 to 19As shown, the positioning tooling includes a first clamping block 34 and a second clamping block 4. An upper end of a rotating disk 3 is provided with a first installation groove 32. The first clamping block 34 is arranged inside the first installation groove 32. A square through groove 44 is formed inside the second clamping block 4. The second clamping block 4 is slidably arranged in the first installation groove 32 and sleeved outside the first clamping block 34. Clamping grooves of the first clamping block 34 and the second clamping block 4 are arranged in a V shape. A first clamping groove 341 is arranged on one side of the first clamping block 34, and a second clamping groove 45 is arranged on an inner side of the second clamping block 4. The axis of a stator blade 9 is positioned by using the first clamping groove 341 and the second clamping groove 45. A bottom side of the stator blade 9 is provided with a stator blade base 91. A bottom side of the stator blade base 91 is provided with a journal 92. The stator blade base 91 is supported on an upper end surface of the second clamping block 4 to realize height positioning of the stator blade 9. The journal 92 is arranged between the first clamping groove 341 and the second clamping groove 45. The first clamping block 34 and the second clamping block 4 approach and clamp the journal 92 to realize axis positioning of the stator blade 9.

[0051] As Figure 16 and Figure 17 shown, a positioning plane 94 is arranged on one side of the stator blade base 91. As Figure 9 , Figure 18 and Figure 19 shown, the positioning tooling further includes a jacking block 6. The jacking block 6 is slidably arranged in the first installation groove 32 and arranged inside the square through groove 44. The jacking block 6 is arranged close to the positioning plane 94 and used for ensuring that the stator blade 9 is completely fixed on a jig and preventing the stator blade 9 from rotating.

[0052] Furthermore, a positioning column 93 is arranged on a bottom side of the journal 92. A positioning hole 322 is arranged on a bottom side of the first installation groove 32. The positioning hole 322 is located in the middle of the first clamping groove 341 and the second clamping groove 45. The positioning column 93 is arranged in the positioning hole 322 in a matching manner to further realize positioning and clamping of the stator blade 9.

[0053] As Figures 1 to 19 shown, the positioning tooling further includes a pressing block 5. A second installation groove 33 communicated with the first installation groove 32 is formed on an upper end of the rotating disk 3. The pressing block 5 is arranged in the second installation groove 33. Specifically, a connecting block 51 is arranged on an upper end of the pressing block 5. The connecting block 51 is arranged close to an upper end surface of the rotating disk 3. First pin holes 36 and first threaded holes 35 are respectively formed on two sides of the rotating disk 3. The first pin holes 36 and the first threaded holes 35 are arranged outside the second installation groove 33. Second pin holes 56 and counterbore holes 57 are arranged on two sides of the connecting block 51. When the pressing block 5 is arranged in the second installation groove 33, the first pin holes 36 and the second pin holes 56 are aligned and a first pin shaft 58 is inserted. The first threaded holes 35 and the counterbore holes 57 are aligned and a first countersunk head screw 59 is screwed in to be fixed, so that detachable installation of the pressing block 5 can be realized.

[0054] As Figures 1 to 19 shown, a first slot 54 is provided on one side of the connecting block 51, and a second threaded hole 55 communicating with the first slot 54 is provided on the other side of the connecting block 51. A tightening screw 61 is threadedly connected inside the second threaded hole 55. The end of the tightening screw 61 abuts against the tightening block 6. A lever 62 is inserted into the other end of the tightening screw 61 to facilitate the rotation of the tightening screw 61. Two spring grooves 46 are provided on the inner wall of the second clamping block 4. A first sliding hole 47 communicating with the spring groove 46 is provided on the second clamping block 4. Second sliding holes 53 are provided on both sides of the pressing block 5. The second sliding holes 53 are provided below the second threaded hole 55. First sliding rods 63 are provided on both sides of the tightening block 6. The first sliding rods 63 are sequentially slidably arranged in the first sliding holes 47 and the second sliding holes 53. A first spring 64 is sleeved on the first sliding rods 63 between the second clamping block 4 and the tightening block 6. The first spring 64 is arranged in the spring groove 46, and both the tightening block 6 and the first spring 64 are arranged in a square through groove 44 inside the second clamping block 4. The tightening block 6 is arranged on the upper end surface of the first clamping block 34. A first sliding rod 63 and a first spring 64 are arranged between the second clamping block 4 and the tightening block 6. The two act together to make the tightening block 6 have uniform plane stress after clamping, and the tightening block 6 is parallel and closely attached to the positioning plane 94 of the stator blade 9.

[0055] As Figures 1 to 19As shown in the figure, one end of the second clamping block 4 is provided with an adjusting screw rod 41. The adjusting screw rod 41 is arranged directly below the tightening screw rod 61. A screw through hole 52 is provided in the middle of the pressing block 5. The adjusting screw rod 41 passes through the screw through hole 52 of the pressing block 5. An adjusting nut 411 is arranged on the adjusting screw rod 41, and the adjusting nut 411 is closely attached to the outer wall of the pressing block 5. By using the adjusting screw rod 41 and the adjusting nut 411, the distance between the first clamping block 34 and the second clamping block 4 is adjusted to achieve clamping. Inside the rotating disc 3, a third sliding hole 321 is provided. The third sliding hole 321 is arranged on both sides of the second installation groove 33, and the third sliding hole 321 is arranged at the bottom side of the first threaded hole 35 and the first pin hole 36. A second sliding rod 48 is arranged in the third sliding hole 321. One end of the second sliding rod 48 is arranged in the first installation groove 32. Fourth sliding holes 43 are formed along the length direction of the adjusting screw rod 41 on both sides of the second clamping block 4. The second sliding rod 48 is slidably arranged in the fourth sliding holes 43 of the second clamping block 4. A second spring 49 is sleeved on the second sliding rod 48 between the second clamping block 4 and the first installation groove 32. A limiting groove 42 is arranged on one side of the fourth sliding hole 43, and one end of the second spring 49 is arranged in the limiting groove 42. The rotating disc 3 is equipped with a pressing block 5. The function of the pressing block 5 is to axially and radially position the second clamping block 4, so that the second clamping block 4 can only move in a specified direction, thereby realizing the joint action of the second clamping block 4 and the first clamping block 34 on the rotating disc 3 to clamp the blade. A second spring 49 and a second sliding rod 48 are designed between the rotating disc 3 and the second clamping block 4. The purpose is that when the adjusting nut 411 is loosened, the second clamping block 4 and the first clamping block 34 on the rotating disc 3 seat move away from each other, so that the distance between the first clamping groove 341 and the second clamping groove 45 is increased and greater than the size of the blade journal 92, ensuring that the blade journal 92 can be easily placed into the first clamping groove 341 and the second clamping groove 45.

[0056] Embodiment 3

[0057] After the stator blade 9 is clamped and fixed, a profile measurement system is designed. The profile measurement system provides support for each measurement template, controls the height of each template, and ensures that the measurement surface of the template is consistent with the height of the specified blade profile to be measured. The structures of the front profile measurement system and the back profile measurement system of the blade are similar, except that the profile of the template is designed according to the corresponding profile size, and the size of each profile template 8 is different.

[0058] As Figures 1 to 19 shown in the figure, an installation shaft 72 is provided at the upper end of the support mandrel 7. A number of profile templates 8 are arranged on the installation shaft 72. Adjacent profile templates 8 are separated by adjusting washers 73. The top end of the installation shaft 72 presses the profile templates 8 through an elastic washer 741 and a second locking nut 74. A fixing screw rod 71 is arranged below the support mandrel 7. The fixing screw rod 71 passes through to the lower side of the base 1 and is screwed into the flat washer 312 and the third locking nut 75 to fix the support mandrel 7.

[0059] The support mandrel 7 serves as the main support structure of the profile measurement system. The upper support surface on the support mandrel 7 is at the same height as the bottom plane of the stator blade base 91, as Figure 6 shown, both are located on the L1 plane. This plane serves as the positioning reference for measuring the profile height of the measurement system. According to the distance between the measured profile of the blade and the bottom plane of the blade base 1, different adjusting washers 73 are designed. The thickness of the adjusting washer 73 and the thickness of the template are matched according to the distance between the measured profile of the stator blade 9 and the bottom plane of the blade base 1, jointly determining the height of the template for measuring the blade profile. The upper part of the system uses an elastic gasket 741 and a second locking nut 74 to jointly press the adjusting washer 73 and the profile template 8. The function of the elastic gasket 741 is that after pressing the template, using the elasticity of the rubber, the profile template 8 can rotate without changing the height of the template. For each blade profile to be measured, a corresponding profile template 8 is designed, and the profile template 8 has the same profile dimensions as the corresponding stator blade 9.

[0060] On the symmetric side of the profile measurement system on the back surface of the stator blade 9, a front blade profile measurement system is designed, with the same principle. When measuring the blade profile, each profile dimension is measured one by one. The non-measured profile template 8 is placed in the direction as Figure 4 shown to avoid interference or inability to measure due to inconsistent directions.

[0061] Measurement principle:

[0062] When the device of the present invention is in use, first use the adjusting screw 12 to adjust the upper surface of the base 1 to be approximately horizontal, and rotate the locking nut 13 to fix the state of the base plate at this time.

[0063] When rotating the adjusting nut 411, the distance between the first clamping block 34 and the second clamping block 4 on the blade mounting seat is opened. Pull the lever 62 to loosen the top block 6, and insert the journal 92 of the stator blade 9 between the first clamping block 34 and the second clamping block 4. Adjust the direction of the positioning plane 94 of the stator blade 9 so that the positioning plane 94 is visually parallel to the top block 6. Gently press down the stator blade 9 to ensure that the bottom surface of the mirror blade base 91 is in close contact with the end face of the second clamping block 4. Rotate the adjusting nut 411 to clamp the journal 92 with the first clamping block 34 and the second clamping block 4. Pull the lever 62 to press the positioning plane 94 with the top block 6. At this time, the clamping of the stator blade 9 is completed and the measurement process begins. Note that when clamping the blade, the profile template 8 is rotated in the direction as Figure 4 shown to avoid interference with the stator blade 9 and affect the clamping of the stator blade 9.

[0064] First, measure the size of the back surface profile of the stator vane 9. Rotate the first back surface profile template 8 to fit it against the back surface of the stator vane 9. Rotate the rotating disk 3 to drive the stator vane 9 to rotate, and visually observe the stator vane 9 and the first back surface profile template 8 to fit to the best state. Place a small LED light bead under the first back surface profile template 8 and power it on to generate a relatively bright light. At the same time, rotate the stator vane 9 and rotate the rotating disk 3 to drive the vane to rotate, and observe the light transmission situation of the stator vane 9 and the rotating disk 3 driving the stator vane 9 to rotate from above the first back surface profile template 8. The size of the gap between the stator vane 9 and the first back surface profile template 8 can be judged according to the color of the transmitted light, so as to judge whether the size of the stator vane 9 profile is qualified. (There is a corresponding table for the gap size and the transmitted light color. For example: when the gap is greater than 2.5μm, the transmitted light color is white light; when the gap is 1-2μm, the transmitted light color is white). Thus, the detection of the first back surface profile size is completed.

[0065] After the detection of the first back surface profile size of the stator vane 9 is completed, open the first back surface profile template 8 to its original position, and perform other back surface profile detections according to the above steps. Repeat the above steps until all back surface profile size detections are completed. Then repeat the above steps to perform the detection of multiple profile sizes on the front surface of the stator vane 9.

[0066] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An aeroengine blade profile detection system, characterized in that: It includes a base, a rotating disk, a supporting mandrel and a profile template. A rotating disk is rotatably arranged on the base, and a positioning tooling for clamping the stator vane is arranged on the rotating disk. The profile template includes a number of back profile templates and front profile templates arranged on the supporting mandrel. The back profile template is the same size as the back profile of the stator vane, and the front profile template is the same size as the front profile of the stator vane. A number of the back profile templates and a number of the front profile templates are respectively arranged on both sides of the positioning tooling. The back profile template can rotate to fit the back of the stator vane to be measured, and the front profile template can rotate to fit the front of the stator vane to be measured.

2. The aero-engine blade profile detection system according to claim 1, characterized in that: The positioning tooling includes a first clamping block and a second clamping block. A first installation groove is opened at the upper end of the rotating disk, and the first clamping block is arranged inside the first installation groove. The second clamping block is slidably arranged in the first installation groove, and the second clamping block is sleeved outside the first clamping block. A stator vane base is arranged at the bottom side of the stator vane, and a journal is arranged at the bottom side of the stator vane base. The stator vane base is supported on the upper end faces of the first clamping block and the second clamping block, and the first clamping block and the second clamping block are close to each other to clamp the journal.

3. The aero-engine blade profile detection system according to claim 2, characterized in that: A positioning plane is arranged on one side of the stator vane base. The positioning tooling further includes a top block, and the top block is slidably arranged in the first installation groove and is closely arranged against the positioning plane.

4. The aero-engine blade profile detection system according to claim 2, characterized in that: A positioning column is arranged at the bottom side of the journal, and a positioning hole is arranged at the bottom side of the first installation groove. The positioning column is cooperatively arranged in the positioning hole.

5. The aero-engine blade profile detection system according to claim 2, wherein: The positioning tooling further includes a pressing block. A second installation groove communicating with the first installation groove is opened at the upper end of the rotating disk, and the pressing block is arranged in the second installation groove. A top screw is threadedly connected inside the pressing block, and the end of the top screw is closely arranged against the top block. First sliding rods are arranged on both sides of the top block, and the first sliding rods are slidably arranged in the inner hole of the pressing block. A first spring is sleeved on the first sliding rods between the pressing block and the top block.

6. The aero-engine blade profile detection system according to claim 5, characterized in that: One end of the second clamping block is provided with an adjusting screw, and the adjusting screw passes through the inner hole of the pressing block. An adjusting nut is arranged on the adjusting screw. A second sliding rod is arranged inside the rotating disk, and one end of the second sliding rod is arranged in the first installation groove. The second sliding rod is slidably arranged in the inner hole of the second clamping block. A second spring is sleeved on the second sliding rods between the second clamping block and the first installation groove.

7. The aero-engine blade profile detection system according to claim 2, characterized in that: The clamping grooves of the first clamping block and the second clamping block are arranged in a V shape.

8. The aeroengine blade profile detection system according to claim 2, characterized in that: A positioning sleeve is detachably arranged on the base, and the rotating disk is rotatably arranged in the inner hole of the positioning sleeve. A connecting screw is arranged at the bottom end of the rotating disk, and the connecting screw passes through the bottom side of the base. A flat washer and a first locking nut are arranged on the connecting screw.

9. The aero-engine blade profile detection system according to claim 1, characterized in that: An installation shaft is arranged at the upper end of the supporting mandrel, and a number of profile templates are arranged on the installation shaft. Adjacent profile templates are separated by adjusting washers, and the profile templates are pressed by a second elastic gasket and a second locking nut at the top end of the installation shaft.

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