Double-journal blade opening measuring tool of aero-engine

Abstract

The utility model provides an aero-engine double-journal blade opening measuring tool, which comprises a bottom plate, and a gauge block I, a gauge block II, an axial positioning mechanism I, an axial positioning mechanism II and a measuring tool which are arranged on the bottom plate, the middle part of the gauge block I is provided with a groove I for supporting one end of a blade, the middle part of the gauge block II is provided with a groove II for supporting the other end of the blade, and the axial positioning mechanism I is provided with a groove II for supporting the other end of the blade. The first axial positioning mechanism is arranged on the outer side of the first gauge block and used for abutting against the end of the first journal, and the second axial positioning mechanism is arranged on the outer side of the second gauge block and used for abutting against the end of the second journal. The opposite side faces of the first gauge block and the second gauge block are inclined faces, the inclination of the inclined faces is the same as the inclination of the corresponding inner side face of a margin plate on a standard blade, and the measuring tool is fixed to the inclined faces and conducts opening measurement on the inner side face of the margin plate with the inclined faces as the reference face. According to the utility model, the blade is simple and convenient to disassemble and assemble, the positioning is stable and reliable, the measurement is convenient, the measurement result is visual, the measurement difficulty is reduced, and the measurement accuracy and the measurement efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft engine blade processing, in particular to a double-journal blade opening measuring tool for an aircraft engine. Background Art

[0002] During the manufacturing process of the adjustable stator blades of the compressor part of an aircraft engine, it is necessary to perform opening measurement. Figure 1 As shown, the adjustable stator blade of the air compressor part of the aircraft engine is a double-journal blade, including a journal 102, a journal 2 101 and a blade profile 103 located between the journal 102 and the journal 2 101, and the inner side surface 104 of the edge plate at both ends of the blade profile 103 is a conical surface. The open-gear measurement is to measure the conical surface slope of the inner side surface 104 of the edge plate at both ends of the blade profile 103. The airflow compression efficiency can be controlled by the open-gear measurement, so the open-gear measurement is an indispensable process in the manufacturing process of aircraft engine blades.

[0003] However, the stator blade opening requirements are relatively high. Currently, the stator blade opening measurement mostly adopts three-coordinate measurement, which is troublesome to measure, cumbersome to operate, low in efficiency, and low in measurement accuracy. It is difficult to guarantee the production requirements of the blades and is not suitable for mass production of blades. Utility Model Content

[0004] The utility model aims to provide a double-journal blade opening measuring tool for an aero-engine, so as to overcome the shortcomings in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a double-journal blade opening measuring tool for an aircraft engine, comprising a base plate and a gauge block 1, a gauge block 2, an axial positioning mechanism 1, an axial positioning mechanism 2, and a measuring tool arranged on the base plate, wherein the middle portion of the gauge block 1 is provided with a groove 1 for supporting one end of the blade, the middle portion of the gauge block 2 is provided with a groove 2 for supporting the other end of the blade, the axial positioning mechanism 1 is arranged on the outside of the gauge block 1 for abutting the end of the journal 1, and the axial positioning mechanism 2 is arranged on the outside of the gauge block 2 for tightly abutting the end of the journal 2; the side surfaces opposite to the gauge block 1 and the gauge block 2 are both inclined surfaces, the inclination of the inclined surface is the same as the inclination of the inner side surface of the corresponding edge plate on the standard blade, and the measuring tool is fixed on the inclined surface and uses the inclined surface as a reference surface to perform opening measurement on the inner side surface of the edge plate.

[0006] Furthermore, in the above-mentioned double-journal blade opening measuring tool of the aircraft engine, the side surface of gauge block one opposite to gauge block two is slope one, and the measuring tool is fixed on slope one to perform opening measurement on the inner side surface of the edge plate close to journal one with slope one as a reference; the side surface of gauge block two opposite to gauge block one is slope two, and the measuring tool is fixed on slope two to perform opening measurement on the inner side surface of the edge plate close to journal two with slope two as a reference.

[0007] Furthermore, in the above-mentioned double-journal blade opening measuring tool of the aircraft engine, the axial positioning mechanism includes a body seat, a top point, and a bushing. The body seat is provided with a through hole inside, one end of the through hole is provided with a screw plug threadedly connected thereto, and the other end is inserted with a bushing, the top point is inserted inside the bushing and is slidably connected to the bushing; the inner end of the top point is provided with a spring hole, and a spring connected to the screw plug is provided in the spring hole of the top point.

[0008] Furthermore, in the above-mentioned double-journal blade opening measuring tool of the aircraft engine, the axial positioning mechanism also includes a limit piece, the top of the body seat is provided with a mounting hole connected to the through hole, the outer side surface of the top is provided with a slide groove, the limit piece is installed on the mounting hole, and passes through the mounting hole, the bushing and the bottom surface of the slide groove to be movably connected, the axial position of the top can be fixed by the cooperation of the limit piece and the slide groove, and the top is fixed when the limit piece is pressed against the bottom surface of the slide groove.

[0009] Furthermore, in the above-mentioned double-journal blade opening measuring tool of the aircraft engine, the second axial positioning mechanism includes a body seat, a top point, and a bushing. The body seat is provided with two penetrating through holes, and the through holes are inserted with bushings. The top point is inserted into the bushing and is slidably connected with the bushing. One end of the bushing away from the gauge block extends out of the body seat, and the end extending out of the body seat is provided with a nut threadedly connected thereto. The inner end of the top point is also provided with a spring hole, and the spring hole of the top point is provided with a spring connected to the nut.

[0010] Furthermore, in the above-mentioned double-journal blade opening measuring tool of the aircraft engine, the axial positioning mechanism 2 also includes an adjusting component, and the adjusting component includes a gear, a rocker, and a limit piece 2. A gear hole vertically arranged with the through hole 2 is provided inside the lower end of the body seat 2, the gear is arranged in the gear hole, and the upper end of the gear extends into the inside of the bushing 2 and meshes with the rack arranged at the lower end of the top 2. A rocker is provided at the end of the gear extending out of the body seat 2; a mounting hole 2 connected with the through hole 2 is provided at the top of the body seat 2, and a slide groove 2 is provided on the outer side surface of the top 2; the limit piece 2 is installed on the mounting hole 2, and is movably connected through the mounting hole 2, the bushing 2 and the bottom surface of the slide groove 2; the axial position of the top 2 can be fixed by the cooperation of the limit piece 2 and the slide groove 2, and the top 2 is fixed when the limit piece 2 is pressed against the bottom surface of the slide groove 2.

[0011] Furthermore, in the above-mentioned double-journal blade opening measuring tool of the aircraft engine, the measuring tool is fixed on the first bevel or the second bevel through a dial seat, a dial clamp is provided on the outer side of the dial seat, the measuring tool is inserted into the dial clamp, and fixed to the dial clamp through a star nut.

[0012] Furthermore, the above-mentioned dual-journal blade opening measuring tool of the aircraft engine also includes an angle positioning mechanism, which is used to position the angle of the blade, and includes a slide seat, a slider, a spring pad, and a spring three. The slide seat is fixed to the outer side of the gauge block one, the slider is inserted into the slide seat and is slidably connected to the slide seat, a slide groove three is provided in the middle of the slider, the spring pad is fixedly connected to the slide seat, and is arranged in the slide groove three and is slidably connected to the slide groove three, the spring three is arranged in the slide groove three, one end of which is connected to the spring pad, and the other end is connected to the slider, and the end of the slider close to the blade is provided with a conical positioning portion that matches the positioning groove on the journal one; a slide groove four arranged parallel to the slide groove three is also provided on the outer side of the slider, and a limit piece three is provided on the slide seat, and the limit piece three extends into the interior of the slide seat and is movably connected to the bottom surface of the slide groove four, and the position of the slider on the slide seat can be fixed by the cooperation between the limit piece three and the slide groove four.

[0013] Furthermore, in the above-mentioned double-journal blade opening measuring tool of the aircraft engine, the groove one is a semicircular stepped hole, and the stepped surface of the groove one abuts against the outer side surface of the edge plate close to the journal one, the large hole of the groove one cooperates with the outer peripheral surface of the edge plate close to the journal one, the groove one cooperates with the axial positioning mechanism one to position the axial position of one end of the blade, and the groove two is a semicircular hole, which cooperates with the outer peripheral surface of the edge plate close to the journal two.

[0014] Furthermore, the above-mentioned double-journal blade opening measuring tool for the aircraft engine also includes a T-shaped clamping block 1 and a clamping block 2, wherein the gauge block 1 is provided with a T-shaped groove 1 located above the groove 1, the clamping block 1 is inserted in the T-shaped groove 1, and the lower end of the clamping block is provided with an arc groove 1 that matches the outer peripheral surface of the edge plate close to the journal 1, the arc groove 1 and the large hole of the groove 1 are combined into a circular hole of the clamping edge plate, and the clamping block 1 cooperates with the groove 1 to position the edge plate close to the journal 1; the gauge block 2 is provided with a A slot is located above the groove 2, and two blocks are symmetrically arranged with the slot as the center on the outer side of the gauge block 2, and oppositely arranged open slots are arranged on the inner sides of the two blocks. The two open slots and the slot are combined into a T-slot 2, and the clamping block 2 is inserted in the T-slot 2. The lower end of the clamping block 2 is provided with an arc groove 2 that matches the outer peripheral surface of the edge plate close to the shaft neck 2. The arc groove 2 and the groove 2 are combined into a circular hole for clamping the edge plate, and the clamping block 2 cooperates with the groove 2 to position the edge plate close to the shaft neck 2.

[0015] Compared with the prior art, the utility model has the following beneficial effects: a positioning support structure for a blade is composed of gauge block 1, gauge block 2, axial positioning mechanism 1 and axial positioning mechanism 2, which has a simple structure, stable and reliable positioning, and the blades are easy and convenient to disassemble and assemble, without the need for special tools, thus saving time and improving efficiency; and standard tools are used to perform opening measurement based on gauge blocks that meet the standards, which makes measurement convenient, and the measurement results intuitive, reduces the measurement difficulty, improves the measurement accuracy and efficiency, and can adapt to the opening measurement of blade aircraft engines with higher requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of a double-journal blade;

[0018] Figure 2 The structure diagram of the double-journal blade opening measuring tool for the aero-engine of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 3 The structure diagram of the double-journal blade opening measuring tool for the aero-engine of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 4 for Figure 3 A schematic diagram of the cross-section structure;

[0021] Figure 5 It is a schematic diagram of the structure of a gauge block of a double-journal blade opening measuring tool for an aero-engine of the utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the gauge block 2 of the double-journal blade opening measuring tool of the aero-engine of the utility model;

[0023] Figure 7 It is a structural schematic diagram of the angle positioning mechanism of the double-journal blade opening measuring tool of the aero-engine of the utility model;

[0024] In the figure: 101, journal 1; 102, journal 2; 103, blade profile; 104, inner side of edge plate;

[0025] 1. Bottom plate;

[0026] 2. Gauge block one; 21. Groove one; 22. Inclined surface one; 23. Step surface; 24. T-slot one;

[0027] 2. Gauge block 2; 31. Groove 2; 32. Inclined surface 2; 33. Slot; 34. Opening slot;

[0028] 4. Axial positioning mechanism 1; 41. Body seat 1; 411. Through hole 1; 42. Top 1; 421. Slide 1; 43. Bushing 1; 44. Screw plug; 45. Spring 1; 46. Limiting member 1;

[0029] 5. Axial positioning mechanism 2; 51. Body seat 2; 511. Through hole 2; 52. Center 2; 521. Slide 2; 53. Bushing 2; 54. Nut; 55. Spring 2; 56. Gear; 57. Rocker; 58. Stopper 2; 59. Rack;

[0030] 6. Angle positioning mechanism; 61. Sliding seat; 62. Sliding block; 621. Sliding slot three; 622. Sliding slot four; 63. Spring pad; 64. Spring three; 65. Limiting member three;

[0031] 7. Clamping block 1; 8. Clamping block 2; 9. Stopper; 10. Meter base; 11. Meter clamp; 12. Star nut. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] like Figure 1-7As shown, a double-journal blade opening measuring tool for an aircraft engine includes a base plate 1 and a gauge block 2, a gauge block 3, an axial positioning mechanism 4, an axial positioning mechanism 5, and a measuring tool (not shown in the figure) arranged on the base plate 1. The middle part of the gauge block 2 is provided with a groove 21 for supporting one end of the blade, the middle part of the gauge block 3 is provided with a groove 231 for supporting the other end of the blade, the axial positioning mechanism 4 is arranged on the outside of the gauge block 2 for abutting against the end of the journal 101, and the axial positioning mechanism 25 is arranged on the outside of the gauge block 23 for tightly abutting against the journal 101. 2; the side surfaces opposite to the gauge block 1 2 and the gauge block 2 3 are both inclined surfaces, the inclination of the inclined surface is the same as the inclination of the inner side surface 104 of the edge plate corresponding to the standard blade. In this embodiment, the inclination of the inner side surface of the edge plate of the standard blade is the inclination that meets the blade manufacturing standard. A standard gauge block is made according to this standard for easy measurement. The measuring tool is fixed on the inclined surface and uses the inclined surface as a reference surface to perform open-file measurement on the inner side surface 104 of the edge plate. In this embodiment, the measuring tool is a standard tool: a lever dial indicator and a lever micrometer, which are convenient for measurement and have intuitive measurement results.

[0035] Specifically, the side surface of the gauge block 2 opposite to the gauge block 23 is a slope 22, and the measuring tool is fixed on the slope 22 to perform open-file measurement on the inner side surface 104 of the edge plate close to the shaft neck 101 with the slope 22 as a reference; the side surface of the gauge block 23 opposite to the gauge block 2 is a slope 32, and the measuring tool is fixed on the slope 32 to perform open-file measurement on the inner side surface 104 of the edge plate close to the shaft neck 102 with the slope 32 as a reference.

[0036] Among them, Figure 2-3 As shown, the measuring tool is fixed on the inclined surface 1 22 or the inclined surface 2 32 through the table base 10, and a table clamp 11 is provided on the outer side of the table base 10. The measuring tool is inserted into the table clamp 11 and fixed to the table clamp 11 through a star nut 12. The disassembly and assembly of the measuring tool is simple and convenient. To save time, one measuring tool can also be installed on each inclined surface.

[0037] The utility model adopts a gauge block 1 2, a gauge block 2 3, an axial positioning mechanism 1 4, and an axial positioning mechanism 2 5 to form a positioning support structure for a blade, which has a simple structure, stable and reliable positioning, and the blades are easy and convenient to disassemble and assemble, and no special tools are needed, thus saving time; and two gauge blocks that meet the standards are used as a reference and standard tools are used to perform opening measurement, which facilitates measurement, reduces measurement difficulty, improves measurement accuracy and efficiency, and can adapt to the opening measurement of blade aircraft engines with higher requirements.

[0038] Example 2

[0039] Based on the structure of Example 1, Figure 2-4As shown, the axial positioning mechanism 4 includes a base 41, a top 42, and a bushing 43. The base 41 is provided with a through hole 411, one end of the through hole 411 is provided with a screw plug 44 threadedly connected thereto, and the other end is inserted with a bushing 43, the top 42 is inserted in the bushing 43 and slidably connected with the bushing 43; the inner side end of the top 42 is provided with a spring hole, and the spring hole of the top 42 is provided with a spring 45 connected with the screw plug 44. The spring 45 can provide buffering during axial positioning, reduce the impact on the blade profile, and avoid its deformation.

[0040] In the above structure, if Figure 2-4 As shown, the axial positioning mechanism 4 also includes a limiting member 46. The top of the body seat 41 is provided with a mounting hole 1 connected to the through hole 411. The outer side surface of the top 42 is provided with a slide groove 421. The limiting member 46 is installed on the mounting hole 1, and passes through the mounting hole 1, the bushing 43 and the bottom surface of the slide groove 421 to be movably connected. The axial position of the top 42 can be fixed by the cooperation of the limiting member 46 and the slide groove 421. When the limiting member 46 is pressed against the bottom surface of the slide groove 421, the top 42 is fixed. The cooperation position of the top 42 and the shaft neck 101 can be adjusted according to the length of the shaft neck 101. After adjustment, it is fixed by the limiting member 46. The adjustment is convenient, the flexibility is good, and the application range is wide.

[0041] In addition, if Figure 2-4 As shown, the axial positioning mechanism 2 5 includes a body 2 51, a top 2 52, and a bushing 2 53. The body 2 51 is provided with a through hole 2 511, and a bushing 2 53 is inserted in the through hole 2 511. The top 2 52 is inserted in the bushing 2 53 and is slidably connected with the bushing 2 53. The end of the bushing 2 53 away from the gauge block 2 3 extends out of the body 2 51, and the end extending out of the body 2 51 is provided with a nut 54 threadedly connected thereto; the inner side end of the top 2 52 is also provided with a spring hole, and the spring hole of the top 2 52 is provided with a spring 2 55 connected to the nut 54. The spring 2 55 can also provide buffering during axial positioning, reduce the impact on the blade profile 103, and avoid its deformation.

[0042] In the above structure, if Figure 2-4As shown, the axial positioning mechanism 2 5 also includes an adjustment component, which includes a gear 56, a rocker 57, and a second stopper 58. A gear hole is provided at the lower end of the second body seat 51 and is vertically arranged with the second through hole 511. The gear 56 is arranged in the gear hole, and the upper end of the gear 56 extends into the second bushing 53 and meshes with the rack 59 provided at the lower end of the second top 52. In this embodiment, the rack 59 is a tooth shape integrally formed with the second top 52, and the gear 56 extends out of the second body seat 51. A rocker 57 is provided at one end; a mounting hole 2 is provided at the top of the body 51 and communicates with the through hole 2 511; a slide groove 2 521 is provided on the outer side of the top 2 52; the stopper 2 58 is installed on the mounting hole 2 and passes through the mounting hole 2, the bushing 2 52 and the bottom surface of the slide groove 2 521 to be movably connected; the axial position of the top 2 52 can be fixed by the cooperation of the stopper 2 58 and the slide groove 2 521; the top 2 52 is fixed when the stopper 2 58 is pressed against the bottom surface of the slide groove 2 521. By rotating the rocker 57, the gear 56 rotates, and the top 2 52 moves through the gear 56 and the rack 59, thereby pressing against the end of the journal 2 102, and can adapt to the journal 2 102 of different lengths. After adjusting the position of the top 2 52 according to the length of the journal 2 102, the position of the top 2 52 is fixed by the stopper 3 58, which is convenient to adjust, flexible and has a wide range of uses.

[0043] In addition, if Figure 2 , 7 As shown, the double-journal blade opening measuring tool of the aircraft engine of the utility model also includes an angle positioning mechanism 6, which is used to position the angle of the blade, including a slide 61, a slider 62, a spring pad 63, and a spring three 64. The slide 61 is fixed to the outside of the gauge block 2, the slider 62 is inserted into the slide 61 and is slidably connected to the slide 61, a slide groove three 621 is provided in the middle of the slider 62, the spring pad 63 is fixedly connected to the slide 61, and is arranged in the slide groove three 621 and is slidably connected to the slide groove three 621, and the spring three 64 is provided In the slide groove 3 621, one end is connected to the spring pad 63, and the other end is connected to the slider 62. The slider 62 is provided with a conical positioning portion 622 that matches the positioning groove on the journal 1 101 at one end close to the blade; the slider 62 is also provided with a slide groove 4 623 arranged parallel to the slide groove 3 621 on the outside, and the slide seat 61 is provided with a limiter 3 65, which extends into the interior of the slide seat 61 and is movably connected to the bottom surface of the slide groove 4 623. The position of the slider 62 on the slide seat 61 can be fixed by the cooperation of the limiter 3 65 and the slide groove 4 623. The installation angle of the blade can be positioned by setting the angle positioning mechanism 6, which can not only prevent the blade from rotating during the measurement process, but also align the inner side surface 104 of the edge plate with the inclined surface, making it easier to measure and improving the convenience and accuracy of the measurement.

[0044] Example 3

[0045] Based on the structure of Example 2, Figure 2-5 As shown, the groove 21 is a semicircular stepped hole, and the stepped surface 23 of the groove 21 abuts against the outer side surface 104 of the edge plate close to the shaft neck 101. The large hole of the groove 21 also cooperates with the outer peripheral surface of the edge plate close to the shaft neck 101. The groove 21 cooperates with the axial positioning mechanism 4 to position the axial position of one end of the blade, as shown in FIG. Figure 6 As shown, the second groove 32 is a semicircular hole, which matches the outer peripheral surface of the edge plate near the second journal 102. Since the blade profile is thin, this arrangement can reduce the pressure on the blade profile when axially pressing, thereby avoiding deformation of the blade profile.

[0046] like Figure 2-4 As shown, the above-mentioned open-gear measuring tool also includes a T-shaped clamping block 7 and a clamping block 8. The gauge block 2 is provided with a T-shaped slot 24 located above the groove 21, and the clamping block 7 is inserted in the T-shaped slot 24. The lower end of the clamping block 7 is provided with an arc groove 1 that matches the outer peripheral surface of the edge plate close to the shaft neck 101. The arc groove 1 and the large hole of the groove 21 are combined into a circular hole of the clamping edge plate. The clamping block 7 cooperates with the groove 21 to position the edge plate close to the shaft neck 101; the gauge block 23 is provided with a T-shaped slot 24 located above the groove 21. The slot 33 is provided with two stoppers 9 symmetrically arranged with the slot 33 as the center on the outside of the gauge block 2, and the inner sides of the two stoppers 9 are provided with opening grooves 34 arranged opposite to each other. The two opening grooves 34 and the slot 33 are combined into a T-slot 2, and the clamping block 2 8 is inserted into the T-slot 2. The lower end of the clamping block 2 8 is provided with an arc groove 2 that matches the outer peripheral surface of the edge plate close to the shaft neck 2 102. The arc groove 2 and the groove 2 31 are combined into a circular hole for clamping the edge plate. The clamping block 2 8 and the groove 2 31 cooperate to position the edge plate close to the shaft neck 2 102. The blade is further positioned by the combination of the clamping block 1 7, the clamping block 2 8, the gauge block 1 2, and the gauge block 2 3, so that the positioning of the blade is more stable and reliable.

[0047] The working principle of the double-journal blade opening measuring tool of the aircraft engine of the utility model is as follows: initially, the corresponding gauge block 1 2 and gauge block 2 3 are processed according to the blade type, and the gauge block 1 2 and gauge block 2 3 are installed on the bottom plate 1; the blade is placed on the gauge block 1 2 and gauge block 2 3, the journal 101 is located in the groove 1 21, the outer side surface 104 of the edge plate of the journal 101 is abutted against the step surface 23 of the groove 1 21, the journal 2 102 is located in the groove 2 31, and then the top 1 42 is adjusted to make the top 1 42 fit with the shaft end of the journal 101, and the shaft end of the journal 101 is positioned; the rocker 57 is rotated to make the top 2 52 move to the groove 21, and the top 1 42 is adjusted to fit the shaft end of the journal 101, and the shaft end of the journal 101 is positioned; the rocker 57 is rotated to make the top 2 52 move to the groove 21, and the top 2 52 is moved to the groove 21. Close to the shaft neck 102 and press against the shaft end of the shaft neck 102 to realize the axial positioning of the blade; adjust the angle positioning mechanism 6 so that the positioning part of the slider 62 presses against the positioning groove on the shaft neck 101, so that the blade is adjusted to an angle position convenient for measurement, and the inner side surface 104 of the blade edge plate is aligned with the corresponding inclined surface of the gauge block; install the clamping block 1 7 and the clamping block 2 8 to complete the installation of the blade; after installing the measuring tool on the inclined surface, the open-file measurement can be carried out, and the data displayed on the table on the measuring tool can be used to directly judge whether the inner side surface of the blade edge plate is processed properly. The measurement is simple and convenient, and the structure is intuitive, which greatly improves the measurement accuracy and efficiency.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-journal blade opening measuring tool for an aircraft engine, characterized in that: It includes a base plate and a gauge block 1, a gauge block 2, an axial positioning mechanism 1, an axial positioning mechanism 2, and a measuring tool arranged on the base plate. The middle part of the gauge block 1 is provided with a groove 1 for supporting one end of the blade, and the middle part of the gauge block 2 is provided with a groove 2 for supporting the other end of the blade. The axial positioning mechanism 1 is arranged on the outside of the gauge block 1 and is used to abut the end of the shaft neck 1. The axial positioning mechanism 2 is arranged on the outside of the gauge block 2 and is used to tightly abut the end of the shaft neck 2. The side surfaces opposite to the gauge block 1 and the gauge block 2 are both inclined surfaces, and the inclination of the inclined surface is the same as the inclination of the inner side surface of the edge plate corresponding to the standard blade. The measuring tool is fixed on the inclined surface and uses the inclined surface as a reference to perform open-file measurement on the inner side surface of the edge plate.

2. The double-journal blade opening measuring tool for an aircraft engine according to claim 1, characterized in that: The side surface of gauge block one opposite to gauge block two is slope one, and the measuring tool is fixed on slope one to perform open-file measurement on the inner side surface of the edge plate close to shaft neck one with slope one as a reference; the side surface of gauge block two opposite to gauge block one is slope two, and the measuring tool is fixed on slope two to perform open-file measurement on the inner side surface of the edge plate close to shaft neck two with slope two as a reference.

3. The double-journal blade opening measuring tool for an aircraft engine according to claim 1, characterized in that: The axial positioning mechanism includes a body seat, a top point, and a bushing. The body seat is provided with a through hole, one end of the through hole is provided with a screw plug threadedly connected thereto, and the other end is inserted with a bushing. The top point is inserted into the bushing and is slidably connected to the bushing. The inner end of the top point is provided with a spring hole, and a spring connected to the screw plug is provided in the spring hole of the top point.

4. The double-journal blade opening measuring tool for an aircraft engine according to claim 3, characterized in that: The axial positioning mechanism also includes a limiting member, a mounting hole connected to a through hole is provided on the top of the body, a slide groove is provided on the outer side of the top, the limiting member is installed on the mounting hole, and passes through the mounting hole, a bushing and a bottom surface of the slide groove to be movably connected, and the axial position of the top can be fixed by the cooperation between the limiting member and the slide groove.

5. The double-journal blade opening measuring tool for an aircraft engine according to claim 1, characterized in that: The second axial positioning mechanism includes a body seat, a top point, and a bushing. The body seat is provided with a through hole two, in which a bushing two is inserted, the top point two is inserted in the bushing two and is slidably connected with the bushing two, and one end of the bushing two away from the gauge block two extends out of the body seat, and the end extending out of the body seat is provided with a nut threadedly connected thereto; the inner end of the top point two is also provided with a spring hole, and the spring hole of the top point two is provided with a spring two connected to the nut.

6. The double-journal blade opening measuring tool for an aircraft engine according to claim 5, characterized in that: The second axial positioning mechanism also includes an adjusting component, which includes a gear, a rocker, and two limit members. A gear hole is provided at the lower end of the second body seat and is vertically arranged with the second through hole. The gear is arranged in the gear hole, and the upper end of the gear extends into the second bushing and meshes with the rack arranged at the lower end of the second top. A rocker is provided at the end of the gear extending out of the second body seat; a mounting hole second connected to the second through hole is provided at the top of the second body seat, and a slide groove second is provided on the outer side surface of the second top. The second limit member is installed on the second mounting hole, and is movably connected through the second mounting hole, the second bushing and the bottom surface of the second slide groove. The axial position of the second top can be fixed by the cooperation of the second limit member and the second slide groove.

7. The double-journal blade opening measuring tool for an aircraft engine according to claim 1, characterized in that: The measuring tool is fixed on the first inclined surface or the second inclined surface through a table base, a table clamp is provided on the outer side of the table base, the measuring tool is inserted into the table clamp and fixed on the table clamp through a star nut.

8. The double-journal blade opening measuring tool for an aircraft engine according to claim 1, characterized in that: The cam is secured to the outside of the slide and is arranged in a manner that the cam is in a position to move in a direction of rotation with respect to the slide, wherein the cam is secured to the outside of the slide and is arranged in a position to move in a direction of rotation with respect to the slide.

9. The double-journal blade opening measuring tool for an aircraft engine according to claim 1, characterized in that: The groove one is a semicircular stepped hole, and the stepped surface of the groove one abuts against the outer side surface of the edge plate close to the shaft neck one, the large hole of the groove one cooperates with the outer peripheral surface of the edge plate close to the shaft neck one, the groove one cooperates with the axial positioning mechanism one to position the axial position of one end of the blade, and the groove two is a semicircular hole, which cooperates with the outer peripheral surface of the edge plate close to the shaft neck two.

10. The double-journal blade opening measuring tool for an aircraft engine according to claim 9, characterized in that: It also includes a T-shaped clamping block 1 and a clamping block 2, wherein the gauge block 1 is provided with a T-slot 1 located above the groove 1, the clamping block 1 is inserted in the T-slot 1, and a lower end of the clamping block is provided with an arc groove 1 that matches the outer peripheral surface of the edge plate close to the shaft neck 1, and the clamping block 1 cooperates with the groove 1 to position the edge plate close to the shaft neck 1; the gauge block 2 is provided with a slot located above the groove 2, and the outer side of the gauge block 2 is provided with two stoppers symmetrically arranged with the slot as the center, and the inner sides of the two stoppers are provided with open grooves that are relatively arranged, and the two open grooves and the slot are combined into a T-slot 2, the clamping block 2 is inserted in the T-slot 2, and the lower end of the clamping block 2 is provided with an arc groove 2 that matches the outer peripheral surface of the edge plate close to the shaft neck 2, and the clamping block 2 cooperates with the groove 2 to position the edge plate close to the shaft neck 2.

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