CN110076710B - Large-scale transportation aircraft engine rotor positioning and measuring device - Google Patents
Large-scale transportation aircraft engine rotor positioning and measuring device Download PDFInfo
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- CN110076710B CN110076710B CN201910423135.1A CN201910423135A CN110076710B CN 110076710 B CN110076710 B CN 110076710B CN 201910423135 A CN201910423135 A CN 201910423135A CN 110076710 B CN110076710 B CN 110076710B
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- fulcrum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
Abstract
The invention provides a positioning and measuring device for a large-scale transport aircraft engine rotor, which relates to the technical field of assembly and detection of aircraft engine compressor rotors and solves the problems of low rotor measurement accuracy and complex positioning operation; the supporting structure is arranged on the top surface of the base and comprises a first fulcrum and a second fulcrum which are used for supporting the front journal and the rear journal of the rotor respectively, the ground clearance of the first fulcrum is smaller than that of the second fulcrum, and the rotor can rotate around a central axis of the rotor when being seated on the supporting structure; the positioning block is arranged on the base and positioned on one side of the first fulcrum; the process plug is used for being installed at the front shaft neck of the rotor and is used for being matched with the positioning block in an abutting mode to achieve axial positioning of the rotor. The rotor is prevented from axially moving in measurement by realizing the inclined horizontal placement of the rotor and the axial positioning of the positioning block on the rotor, the measurement precision of the rotor is improved, and the supporting structural part and the positioning block facilitate the positioning operation of the rotor.
Description
Technical Field
The invention relates to the technical field of assembly detection of an aircraft engine compressor rotor, is suitable for detection of an aircraft engine rotor component after assembly and positioning, and particularly relates to a positioning and measuring device for a large-scale transport aircraft engine rotor.
Background
The rotor part of the aircraft engine mainly comprises a blade, a disc, an intermediate ring, a rotor shaft, a nut and the like. In the prior art, when the diameters, the swinging amounts and other dimensions of the rotor blades are measured, axial movement of the rotor components can be generated, and dimensional deviation is generated. Therefore, the deviation of the rotor size can determine the performance of the engine, the accuracy of the measurement size is improved, and the surge boundary of the engine can be accurately warned. Therefore, the rotor positioning and measuring device is required to ensure whether the size measurement after the rotor assembly meets the technical requirements or not, so that the reliable work of the rotor is ensured.
The size after the rotor assembly is mainly guaranteed by the location measuring device, need detect rotor blade after its rotor assembly and beat, rotor blade diameter, intermediate ring diameter and intermediate ring are beated isopimension, current domestic technique is usually with rotor intermediate ring shape face location back size measurement, the rotor can produce axial cluster during the measurement, easily bump the part, and measurement accuracy is not high, the operation is unstable, the qualification rate is low, the discarded article is many, the increase cost, need rework measurement scheduling problem, can not satisfy the demand of production development.
Disclosure of Invention
The invention aims to design a positioning and measuring device for a large-scale transport aircraft engine rotor, and provides an accurate, effective and conveniently-operated positioning and measuring device, so as to solve the problems that the measuring size after a rotor part is assembled has no deviation, the measuring precision is high, the operation method is simplified and the like.
The invention is realized by the following technical scheme:
a large transport aircraft engine rotor positioning and measuring device comprises a base, a supporting structural member, a process plug and a positioning block; the base is used for being placed on the ground, the supporting structural part is installed on the top surface of the base and comprises a first fulcrum and a second fulcrum, the first fulcrum and the second fulcrum are used for respectively supporting a front journal and a rear journal of the rotor, the ground clearance of the first fulcrum is smaller than that of the second fulcrum, and the rotor can rotate around a central axis of the rotor when being seated on the supporting structural part; the positioning block is arranged on the base and arranged on one side of the first fulcrum; the technical plug is used for being installed at the front shaft neck of the rotor, and the technical plug is used for being matched with the positioning block in an abutting mode to achieve axial positioning of the rotor.
When the arrangement structure is adopted, the rotor is placed at the top of the supporting structural part, the front journal of the rotor is seated at the first fulcrum, the rear journal of the rotor is seated at the second fulcrum, the concentricity of the front journal and the rear journal of the rotor is ensured, and because the ground clearance of the first fulcrum is smaller than the ground clearance of the second fulcrum, the whole rotor is horizontally placed, the front journal end of the rotor is lower than the rear journal end, the rotor inclines towards one side of the front journal, therefore, the rotor has the tendency of sliding downwards towards one side of the front journal, the positioning block is arranged on one side of the base, which is positioned on the front shaft neck of the rotor, and is used for blocking the rotor from sliding down to realize the axial positioning of the rotor so as to prevent the rotor from axially moving, ensure that the rotor does not axially shift in the measuring process, ensure that the measuring size is accurate and real, and during positioning, the process plug is arranged in the front shaft neck of the rotor and is used for being directly abutted against the positioning block to realize the positioning of the rotor. During measurement, the front journal and the rear journal of the rotor are placed at the first fulcrum and the second fulcrum, so that the rotor is downwards seated at the positioning block, the positioning and installation of the rotor can be realized, and the operation is convenient.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the base comprises a platform and a base for placing on the ground, the platform is installed on the top surface of the base, the supporting structural member is installed on the top surface of the platform, and a slope supporting leg for enabling the top surface of the platform to form a slope is arranged on one side of the bottom surface of the base.
When the structure is arranged, the rear end of the base is supported by the slope support legs at the bottom of the base, the rear end of the base is higher than the front end of the base, and then the platform can incline towards the front end to provide a foundation for the rotor to incline and support, so that the design of a supporting structural part can be simplified, and the aim of inclining and horizontally placing the rotor is achieved through a simple structure.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the supporting structure comprises two supports, the two supports are arranged on the top surface of the platform at intervals along the axial direction of the rotor, one support provides the first fulcrum, and the other support provides the second fulcrum.
When the structure is adopted, the two supports respectively provide support for the front journal and the rear journal of the rotor so as to ensure the concentricity of the front journal and the rear journal of the rotor.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the support is provided with bearing groups for simultaneously supporting the rotor shaft necks from two sides of the rotor, and the shaft of each bearing group is parallel to the axial direction of the rotor.
When the structure is adopted, the bearing groups can be arranged into a plurality of groups as required, and the bearing groups are respectively arranged on the supports at the front journal and the rear journal and used for supporting the rotor shaft, so that the rotor is ensured to rotate flexibly, the rotor shaft is not damaged, and the force between the bearing and the rotor shaft is reduced.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the platform is arranged on the top surface of the support, and the bottom surface of the support is arranged on the top surface of the base.
When the structure is arranged, the support is used for elevating the platform to facilitate rotor measurement.
In order to further better implement the invention, the following arrangement structure is particularly adopted: and a cushion block is arranged at the bottom of the positioning block and is arranged on the bracket.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the technical plug comprises a flange part, a shaft section of the flange part is inserted into the front rotor journal, a flange part of the flange part is used for abutting against the shaft end face of the front rotor journal to realize the positioning of the technical plug, and the working face of the positioning block is parallel to the end face of the flange part.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the outer diameter of the shaft section of the flange part is smaller than or equal to the inner diameter of the front journal section of the rotor, and the flange part is used for being in clearance fit with the front journal of the rotor.
When the structure is arranged, the process plug is placed in the front shaft neck of the rotor, the shaft end of the flange part is matched with the rotor to form a gap, the process plug is convenient to install and detach, the process plug plays a role in fixing the rotor, the rotor is prevented from axially deviating in the measuring process, and the measuring size is accurate and real.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the technical plug further comprises an ejector pin, the extending end of the ejector pin is inserted into the flange piece, when the technical plug is used, the axis of the ejector pin is overlapped with the axis of the rotor, and the working end face of the positioning block is provided with an ejector pin groove used for being matched with the ejector pin.
When the structure is adopted, the thimble grooves of the positioning blocks 8 are used for installing thimbles of the process plugs to prevent the axial movement of the rotor, and the thimbles are matched with the thimble grooves to ensure that the rotor rotates flexibly.
In order to further better implement the invention, the following arrangement structure is particularly adopted: the end of the thimble is a round head, and the thimble groove is a circular groove.
The invention has the following advantages and beneficial effects:
in the invention, when the arrangement structure is adopted, the rotor is placed at the top of the supporting structural member, the front journal of the rotor is seated at the first fulcrum, the rear journal of the rotor is seated at the second fulcrum, the concentricity of the front journal and the rear journal of the rotor is ensured, because the ground clearance of the first fulcrum is smaller than the ground clearance of the second fulcrum, the rotor is wholly laid horizontally, the front journal end of the rotor is lower than the rear journal end, the rotor inclines towards one side of the front journal, and therefore, the rotor has the tendency of sliding downwards towards one side of the front journal, the positioning block is arranged on one side of the base, which is positioned on the front shaft neck of the rotor, and is used for blocking the rotor from sliding down to realize the axial positioning of the rotor so as to prevent the rotor from axially moving, ensure that the rotor does not axially shift in the measuring process, ensure that the measuring size is accurate and real, and during positioning, the process plug is arranged in the front shaft neck of the rotor and is used for being directly abutted against the positioning block to realize the positioning of the rotor. During measurement, the front journal and the rear journal of the rotor are placed at the first fulcrum and the second fulcrum, so that the rotor is downwards seated at the positioning block, the positioning and installation of the rotor can be realized, and the operation is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a large transport aircraft engine rotor position measuring device during measurement;
FIG. 2 is a right side view of a large transport aircraft engine rotor position measurement device;
FIG. 3 is a schematic view of the structure of a process plug;
FIG. 4 is a schematic view of the structure of the base;
labeled as:
1-process plug; 1 a-a flange member; 1 b-a thimble; 2-positioning blocks; 3-a platform; 4-a scaffold; 5-a base; 6-slope support legs; 7-support; 8-bearing set; 9-axis; 10-cushion block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example (b):
the utility model provides a large-scale transportation aircraft engine rotor location measuring device, provides an accurate, effectual, convenient operation's location measuring device to solve the measurement size of rotor part after the assembly and do not have the deviation, measurement accuracy is high, and the part is not damaged, simplifies operation method scheduling problem, as shown in figure 1, figure 2, figure 3, figure 4, set up to following structure especially:
the device comprises a base, a supporting structural part, a process plug 1 and a positioning block 2; the base is used for placing on the ground and installing the support structure and the positioning block 2, and is used for supporting the rotor. Supporting structure installs in the top surface of base, and supporting structure is including first fulcrum and the second fulcrum that is used for supporting the axle journal around the rotor respectively, and the terrain clearance of first fulcrum is less than the terrain clearance of second fulcrum, and the rotor seat in supporting structure can revolve around its self axis during, and this supporting structure is used for supporting the structure at rotor journal position can be an arc groove that matches with the rotor axle journal, fills up the gasket that is equipped with low coefficient of friction in the arc groove, also can be the copper gasket to guarantee the nimble rotation of rotor, supporting structure also can set up and be the support bearing of pivot and rotor shaft syntropy, and support bearing supports the rotor and guarantees the nimble rotation of rotor from the both sides of rotor. The positioning block 2 is mounted on the base, the positioning block 2 is arranged on one side of the first fulcrum, and the positioning block 2 is located on the front side of the rotor during rotor measurement. The process plug 1 is used for being installed at the front shaft neck of the rotor, and the process plug 1 is used for being matched with the positioning block 2 in an abutting mode to achieve axial positioning of the rotor. During measurement, the rotor is placed at the top of the supporting structural part, the front journal of the rotor is seated at the first fulcrum, the rear journal of the rotor is seated at the second fulcrum, the concentricity of the front journal and the rear journal of the rotor is ensured, the ground clearance of the first fulcrum is smaller than that of the second fulcrum, the rotor is integrally laid horizontally, the front journal end of the rotor is lower than the rear journal end, the rotor inclines towards one side of the front journal, therefore, the rotor at the moment has the tendency of sliding downwards towards one side of the front journal, the positioning block is installed at one side of the base, which is located at the front journal of the rotor, and used for blocking the sliding downwards of the rotor to realize the axial positioning of the rotor so as to prevent the axial movement of the rotor, the rotor cannot axially shift in the measurement process is ensured, the measurement size is accurate and real, and during positioning, the process plug is installed in the front journal. During measurement, the front journal and the rear journal of the rotor are placed at the first fulcrum and the second fulcrum, so that the rotor is downwards seated at the positioning block, the positioning and installation of the rotor can be realized, and the operation is convenient. The device not only can improve the stability of rotor part and the accuracy of size measurement, has also improved the maneuverability of compressor part assembly, has ensured the stability of engine work, can effectually prevent the emergence of engine surge moreover.
Specifically, the base comprises a platform 3 and a base 5 for placing on the ground, generally speaking, the platform 3 is mounted on the top surface of the base 5 through screws, the positioning block 2 is mounted on the platform through screws,
to facilitate the measurement, the platform 3 needs to be raised and the stand 4 elevates the platform 3 to facilitate rotor measurement. Therefore, a support 4 is further arranged between the platform 3 and the base 5, the platform 3 is fixed on the top of the support 4 through matched screws, nuts and washers, the ground step of the support 4 is fixedly connected with the base 5 through the screws, after the connection, the bottom surface of the support 4 is installed on the top surface of the base 5, the bottom of the positioning block 2 is provided with a cushion block 10 through the screws, and the cushion block 10 is installed on the front side of the support 4 through the screws. Wherein, one side of the bottom surface of the base 5 is provided with a slope support leg 6 for enabling the top surface of the platform 3 to form a slope, the rear end of the base 5 is supported by the slope support leg 6 at the bottom of the base 5, the rear end of the base 5 is higher than the front end of the base 5, so that the platform 3 can incline towards the front end to provide an inclined supporting foundation for the rotor, thereby simplifying the design of a supporting structural member and achieving the purpose of inclined and horizontal placement of the rotor by a simple structure
The supporting structure is mounted on the top surface of the platform 3, and as a preferred scheme of the supporting structure, the supporting structure comprises two supports 7 mainly used for supporting and fixing the rotor, the two supports 7 are mounted on the top surface of the platform 3 at intervals along the axial direction of the rotor, one support 7 provides a first fulcrum, the other support 7 provides a second fulcrum, and the two supports 7 respectively provide support for a front journal and a rear journal of the rotor so as to ensure the concentricity of the front journal and the rear journal of the rotor. Bearing scheme among the bearing structure is chooseed for use to support 7, and support 7 installs and is used for supporting the bearing group 8 of rotor journal simultaneously from the rotor both sides, and bearing group 8 can set up the multiunit as required, and in this embodiment, every support 7 sets up two sets of bearing group 8, like this, is provided with two bearings on a root axis 9, and axle 9 wears to establish the top at support 7, and the axle 9 of bearing group 8 is parallel with the axial of rotor. Two bearing groups 8, namely four bearings are respectively arranged on the supports 7 at the front journal and the rear journal for supporting the rotor shaft, so that the rotor is ensured to rotate flexibly, the rotor shaft is not damaged, and the force between the bearings and the rotor shaft is reduced.
Specifically, the technological plug 1 comprises a flange part 1a, a shaft section of the flange part 1a is used for being inserted into the front rotor journal, a flange part of the flange part 1a is used for abutting against a shaft end face of the front rotor journal to achieve positioning of the technological plug 1, and the working faces of the positioning blocks 2 are parallel to the end faces of the flange part 1a and are abutted against each other. The outer diameter of the shaft section of the flange part 1a is less than or equal to the inner diameter of the front journal section of the rotor, and the flange part is used for being in clearance fit with the front journal of the rotor. The process plug 1 is placed in a front shaft neck of the rotor, a gap is formed between the shaft end of the flange part 1a and the rotor in a matched mode, the process plug 1 is convenient to install and detach, the process plug 1 plays a role in fixing the rotor, the rotor is prevented from axially deviating in the measuring process, and the measuring size is accurate and real.
As a preferred scheme of the process plug 1, the process plug 1 further includes an ejector pin 1b, an extending end of the ejector pin 1b is inserted into the flange member 1a, the ejector pin 1b is concentric with the flange member 1a, when in use, an axis of the ejector pin 1b coincides with an axis of the rotor, and a working end surface of the positioning block 2 has an ejector pin groove for being matched with the ejector pin 1 b. The thimble groove of the positioning block 8 is used for installing the thimble 1b of the process plug to prevent the rotor from axially moving, and the thimble 1b is matched with the thimble groove to ensure the rotor to flexibly rotate. Wherein, the end of thimble 1b is the button head, the thimble groove is the circular slot.
The part to the rotor location is including bearing group 8 and locating piece 2 and the technology end cap 1 that two supports 7, the 7 top settings of support that arrange around, base 5's slope stabilizer blade 6 realizes that the slope of rotor crouches and puts, and the benefit that sets up like this lies in: firstly, the operation is easy, and operators can directly go on duty after reading the instruction or after simple training, so that the operation difficulty is greatly reduced; secondly, the size measurement can be directly carried out without reference measurement only by positioning and installing the rotor, and the repeatability and the accuracy are high; and thirdly, the method has strong universality and can be used for measurement and measurement of similar sizes of other models.
During measurement, the process plug 1 is installed on a front shaft neck of the rotor and is installed in place, then the high-pressure compressor rotor with the process plug 1 is installed on the support 7 with the bearing group 8, and the front shaft neck and the rear shaft neck of the rotor are in contact with the bearings. The rotor assembly, now mounted to rotate, begins measuring the diameter and runout of its rotor blades and the diameter and runout of the intermediate ring of the rotor. In order to verify whether the measured data of the state is accurate, one measured rotor part is selected and sent to the national metering center for detection, and the result proves that the qualified rate of the dimension measured by the rotor positioning and measuring device is more than 95%.
Therefore, the positioning and measuring device for the large-scale transport aircraft engine rotor provided by the invention has the advantages that the assembly structure is simple, the operation is convenient, the size of the rotor after assembly can be measured by the simplest device, the effective measurement size is ensured, the feasibility of the operation is ensured, the axial movement of the rotor during measurement is prevented, and the use performance of the aircraft engine rotor caused by inaccurate measurement size is eliminated.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (9)
1. The utility model provides a large-scale transportation aircraft engine rotor location measuring device which characterized in that: comprises a base, a supporting structural member, a process plug (1) and a positioning block (2);
the supporting structure is arranged on the top surface of the base and comprises a first fulcrum and a second fulcrum which are used for supporting a front journal and a rear journal of the rotor respectively, the ground clearance of the first fulcrum is smaller than that of the second fulcrum, and the rotor can rotate around a central axis of the rotor when being seated on the supporting structure;
the positioning block (2) is arranged on the base, and the positioning block (2) is arranged on one side of the first fulcrum;
the technical plug (1) is used for being mounted at a front shaft neck of the rotor, and the technical plug (1) is used for realizing axial positioning of the rotor through abutting fit with the positioning block (2);
the base comprises a platform (3) and a base (5) used for being placed on the ground, the platform (3) is installed on the top surface of the base (5), a supporting structural member is installed on the top surface of the platform (3), and a slope supporting leg (6) used for enabling the top surface of the platform (3) to form a slope surface is arranged on one side of the bottom surface of the base (5).
2. A large transport aircraft engine rotor positioning and measuring device as defined in claim 1, wherein: the supporting structure comprises two supports (7), the two supports (7) are arranged on the top surface of the platform (3) at intervals along the axial direction of the rotor, one support (7) provides the first fulcrum, and the other support (7) provides the second fulcrum.
3. A large transport aircraft engine rotor positioning and measuring device according to claim 2, characterized in that: and the support (7) is provided with a bearing group (8) for simultaneously supporting the rotor shaft necks from two sides of the rotor, and a shaft (9) of the bearing group (8) is parallel to the axial direction of the rotor.
4. A large transport aircraft engine rotor positioning and measuring device according to claim 2 or 3, characterized in that: the platform is characterized by further comprising a support (4), the platform (3) is mounted on the top surface of the support (4), and the bottom surface of the support (4) is mounted on the top surface of the base (5).
5. A large transport aircraft engine rotor positioning and measuring device according to claim 4, characterized in that: the bottom of the positioning block (2) is provided with a cushion block (10), and the cushion block (10) is arranged on the bracket (4).
6. A large transport aircraft engine rotor positioning and measuring device according to claim 1, 2 or 3, characterized in that: the technical plug (1) comprises a flange part (1a), a shaft section of the flange part (1a) is used for being inserted into the front rotor journal, a flange part of the flange part (1a) is used for abutting against the shaft end face of the front rotor journal to achieve positioning of the technical plug (1), and the working face of the positioning block (2) is parallel to the end face of the flange part (1 a).
7. A large transport aircraft engine rotor positioning and measuring device according to claim 6, characterized in that: the outer diameter of the shaft section of the flange part (1a) is smaller than or equal to the inner diameter of the front journal section of the rotor, and the flange part is in clearance fit with the front journal of the rotor.
8. A large transport aircraft engine rotor positioning and measuring device according to claim 6, characterized in that: the technical plug (1) further comprises a thimble (1b), the extending end of the thimble (1b) is inserted into the flange piece (1a), when the technical plug is used, the axis of the thimble (1b) is superposed with the axis of the rotor, and the working end face of the positioning block (2) is provided with a thimble groove used for being matched with the thimble (1 b).
9. A large transport aircraft engine rotor positioning and measuring device as claimed in claim 8, wherein: the end of the thimble (1b) is a round head, and the thimble groove is a circular groove.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910423135.1A CN110076710B (en) | 2019-05-21 | 2019-05-21 | Large-scale transportation aircraft engine rotor positioning and measuring device |
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| CN201910423135.1A CN110076710B (en) | 2019-05-21 | 2019-05-21 | Large-scale transportation aircraft engine rotor positioning and measuring device |
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| CN110076710B true CN110076710B (en) | 2021-02-26 |
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