CN106679551A - Gland and intermediate case concentricity measurement method and measurement tool - Google Patents
Gland and intermediate case concentricity measurement method and measurement tool Download PDFInfo
- Publication number
- CN106679551A CN106679551A CN201710048655.XA CN201710048655A CN106679551A CN 106679551 A CN106679551 A CN 106679551A CN 201710048655 A CN201710048655 A CN 201710048655A CN 106679551 A CN106679551 A CN 106679551A
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- measurement
- internal ring
- positioning
- outer shroud
- middle casing
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Classifications
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The present invention discloses a gland and intermediate case concentricity measurement method and measurement tool, relating to the engine maintenance technology field. The method comprises the following steps: the step 1, employing a zero setting mechanism to perform zero setting of a measurement table on a measuring mechanism; the step 2, installing a location mechanism on the intermediate case, installing the measurement mechanism on the location mechanism to allow the header of the measurement table to contact with the measurement surface of the gland and rotate a measurement inner ring on the measurement mechanism to drive the rotation of the measurement table. The gland and intermediate case concentricity measurement tool is configured to complete the measurement method mentioned above. The gland and intermediate case concentricity measurement method and measurement tool can measure the jumping value of the gland on a No.2 supporting point of a measurement engine at an installation scene to realize one-time success, and the measurement working hours are shortened by 90% compared to the prior art, the measurement process is high in precision, the operation is convenient, and the measurement working hours are shortened.
Description
Technical field
The present invention relates to technical field of engines, and in particular to one kind obturage set with Middle casing concentricity measuring method and
Measurement frock.
Background technology
Obturaging on No. second fulcrum of certain large-bypass-ratio engine is covered due to being installed to central transmission front end, by central transmission
Driven gear space limits, and installs and 1/3 or so is machined away at side, and has 4 air entraining pipes and Middle casing bleed on set obturaging
Mouth plug-in type connection, air entraining pipe is larger with Middle casing bleed ports malalignment, comprehensive two aspect factors so that No. second fulcrum
On obturage set install after, often there is moderate finite deformation with the ring Jing that obturages at rotor comb tooth cooperation thereon, cause engine assembly
Afterwards rotor rotates clamping stagnation, dumb phenomenon.Concentricity measurement under the installment state of existing set of obturaging is relied solely on and pretends second
Set of obturaging on number fulcrum, Middle casing is measured with set component of obturaging using machine tool, not only expends a lot of manpower and materials,
Inefficiency, even and if more importantly measurement, adjust qualified, but, when decomposing practical set again after measurement, due to envelope
The tight thin-walled for covering, imperfect installation side, air entraining pipe and intermediary install has the impact of the factors such as stress so that be difficult during practical set
Reach state during measurement.
The content of the invention
Set and Middle casing concentricity measuring method and measurement frock it is an object of the invention to provide one kind is obturaged, to solve
Or the problem at least at least in the presence of mitigation background technology.
The technical solution used in the present invention is：There is provided one kind obturage set with Middle casing concentricity measuring method, comprising with
Lower step：
Step one, the positioning cylindrical surface of null setting is matched somebody with somebody with the measurement outer shroud of measuring mechanism by radial direction seam positioning
Close, adjust the measurement table on the measurement internal ring of measuring mechanism, the gauge outfit of measurement table is contacted with the zeroing face of null setting；Rotate
The measurement internal ring of measuring mechanism, by the surface pointer zeroing of the measurement table, removes the null setting；
Step 2, the positioning outer shroud of detent mechanism is fixedly connected with Middle casing by radial direction seam location fit, so
The measurement outer shroud of measuring mechanism in the step one is matched somebody with somebody with the positioning internal ring of the detent mechanism by radial direction seam positioning afterwards
Conjunction is fixedly connected, and adjusts the measurement table, makes the tested Cylindrical Surfaces Contact of measurement gauge outfit and set of obturaging；
Step 3, the measurement internal ring of rotation measuring mechanism at least a week, measurement table is rotated with measurement internal ring, records institute
State numerical value of the measurement table in circumferencial direction diverse location.
Preferably, in the step one, first by the measurement internal ring of rotary handle rotation measuring mechanism one week, survey is checked
Whether scale pointer returns to initial position, if returning to initial position, is rotated further measurement internal ring, and circumferencial direction uniformly measures at 8 points,
Jitter values of the adjustment measurement table at 8 positions are within 0.02mm；If measurement list index can not return to initial position, after
The continuous debugging pointer of measurement table to after rotating a week that rotates can return to initial position.
Preferably, in the step 3, the measurement internal ring on the measuring mechanism is rotated one week, in measurement internal ring circumference side
To the numerical value of uniform 8 points record measurement tables, circular runout value is then calculated.
Preferably, in the step 3, the measurement internal ring on the measuring mechanism is rotated into week more, each week is in measurement
The numerical value of the uniform 8 points of records measurement table of ring circumferencial direction, then calculates circular runout value, and rotation calculates jitter values weekly after many weeks
Meansigma methodss.
The present invention be also provided to one kind obturage set with Middle casing concentricity measuring tool, for obturaging as above
Set and Middle casing concentricity measuring method, it is characterised in that：The set of obturaging is included with Middle casing concentricity measuring tool
Detent mechanism, measuring mechanism, null setting and measurement table；
The detent mechanism includes positioning outer shroud and positioning internal ring, and the positioning outer shroud is by connecting rod and the positioning internal ring
It is fixedly connected, cylindrical seam and the female coaxial for positioning internal ring of the positioning outer shroud；
The measuring mechanism includes measurement outer shroud and measurement internal ring, and the measurement outer shroud is coaxial with the measurement internal ring, institute
Stating measurement internal ring can rotate relative to the measurement outer shroud；
The measurement outer shroud passes through radial direction seam location fit with the positioning internal ring；
The measurement table is arranged on the measurement internal ring, and gauge outfit extends radially out the outer round surface of the measurement internal ring；
The null setting includes positioning cylindrical surface and zeroing face, and the positioning cylindrical surface is coaxial with the zeroing face, institute
State positioning cylindrical surface to coordinate with the cylindrical seam of the measurement outer shroud, the zeroing face is used for the zeroing of measurement table.
Obturage in set and Middle casing concentricity measuring tool above-mentioned, it is preferable that the end face of the measurement outer shroud is arranged
There is measurement flange, the measurement flange has been radially arranged cutting face；The end face of the positioning internal ring is provided with locating flange, described
The end face of locating flange is provided with alignment pin, the alignment pin it is cylindrical tangent with the cutting face.
Obturage in set and Middle casing concentricity measuring tool above-mentioned, it is preferable that circumference uniform distribution on the measurement flange
It is provided with multiple connection unthreaded holes and dismounting screwed hole.
Obturage in set and Middle casing concentricity measuring tool above-mentioned, it is preferable that arrange in the gauge outfit of the measurement table
There is baffle plate；The measuring mechanism also includes gauge outfit adjusting lever, and described gauge outfit adjusting lever one end is provided with cam, and the other end is provided with
Knob；The gauge outfit adjusting lever is contacted with the diameter parallel for measuring internal ring, the cam with the baffle plate, and the knob sets
Put on the measurement end face of flange.
The beneficial effects of the present invention is：Using obturage set and Middle casing concentricity measuring method and the measurement of the present invention
Swimsuit, can reach disposable success in the jitter values of the set of obturaging on erecting bed measurement No. 2 fulcrum of electromotor, survey
Amount man-hour, in addition the not only high precision, easy to operate of the measurement technique in the present invention, contracted significantly according to can shorten 90% than prior art
In short measurement man-hour, also provide effective technique guidance method to the similar more difficult stator pulsation measurement work for carrying out.
Description of the drawings
Fig. 1 is the obturage set and the flow chart of Middle casing concentricity measuring method of one embodiment of the invention.
Fig. 2 is the obturage set and the use schematic diagram of Middle casing concentricity measuring tool of one embodiment of the invention.
Fig. 3 is the sectional arrangement drawing of the measuring mechanism in embodiment illustrated in fig. 2 and null setting.
Fig. 4 is the schematic diagram of the measuring mechanism in embodiment illustrated in fig. 2.
Fig. 5 is the scheme of installation of the detent mechanism in embodiment illustrated in fig. 2 and measuring mechanism.
Wherein, 1- detent mechanisms, 11- positioning outer shrouds, 12- positioning internal ring, 13- connecting rods, 2- measuring mechanisms, 21- measurements are outer
Ring, 22- measurement internal ring, 23- radial bearings, 24- measurement flanges, 25- cutting faces, 26- gauge outfit adjusting levers, 27- rotary handles, 3-
Null setting, 31- positioning cylindrical surfaces, 32- zeroings face, 4- measurement tables, 41- baffle plates, 5- Middle casings, 6- obturages set.
Specific embodiment
To make purpose, technical scheme and the advantage of present invention enforcement clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from start to finish or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
A part of embodiment, rather than the embodiment of whole.It is exemplary below with reference to the embodiment of Description of Drawings, it is intended to use
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Under
Face combines accompanying drawing and embodiments of the invention is described in detail.
In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " is based on accompanying drawing institute
The orientation for showing or position relationship, are for only for ease of the description present invention and simplify description, rather than indicate or imply the dress of indication
Put or element with specific orientation, with specific azimuth configuration and operation, therefore it is not intended that must be protected to the present invention
The restriction of scope.
As shown in Figures 1 to 5, in the present embodiment, it is described obturage set with Middle casing concentricity measuring method include with
Lower step：
Step one, the positioning cylindrical surface 31 of null setting 3 is determined with the measurement outer shroud 21 of measuring mechanism 2 by radial direction seam
Position coordinates, and adjusts the measurement table 4 on the measurement internal ring of measuring mechanism 2, makes the gauge outfit of measurement table 4 and the zeroing face of null setting 3
32 contacts；The measurement internal ring 22 of rotation measuring mechanism 2, by the surface pointer zeroing of measurement table 4, removes the null setting；
Step 2, the positioning outer shroud 11 of detent mechanism 1 and Middle casing 5 is fixed by radial direction seam location fit and is connected
Connect, then the measurement outer shroud 21 of measuring mechanism 2 in the step one is passed through into radial direction seam with the positioning internal ring 12 of detent mechanism 1
Location fit is fixedly connected, and adjusts the measurement table 4, makes the tested Cylindrical Surfaces Contact of measurement gauge outfit and set 6 of obturaging；
Step 3, the measurement internal ring 22 of rotation measuring mechanism 2 at least a week, measurement table 4 is rotated with measurement internal ring 22,
Numerical value of the record measurement table 4 in circumferencial direction diverse location.
In one the step of the present embodiment, first by the measurement internal ring of the rotation measuring mechanism 2 of rotary handle 27 22 1 weeks,
Whether the pointer for checking measurement table 4 returns to initial position, if returning to initial position, measurement internal ring 22 is rotated further, in zeroing machine
Uniformly 8 points of the measurement of the circumferencial direction of structure 3, jitter values of the adjustment measurement table 4 at 8 positions are within 0.02mm；If surveying
Scale pointer can not return to initial position, and being rotated further debugging pointer of measurement table to after rotating a week can return to initial bit
Put.
In the step 3 of the present embodiment, the measurement internal ring 22 on measuring mechanism 2 is rotated one week, in measurement internal ring 22
Circumferencial direction it is uniform 8 points record measurement table numerical value, then calculate circular runout value.
It is understood that measurement structure 2 is when concentricity is measured, measurement internal ring 22 can also be rotated multi-turn, then
Seek the meansigma methodss of each circle.For example, in an alternative embodiment, in the step 3, by the measurement on the measuring mechanism 2
Internal ring 22 rotates week more, in the numerical value of the uniform 8 points of records measurement table of the measurement circumferencial direction of internal ring 22, then calculates radially in each week
Jitter values, rotation calculates weekly the meansigma methodss of jitter values after many weeks.
The present embodiment additionally provides one kind and obturages and covers and Middle casing concentricity measuring tool, for obturaging as above
Set and Middle casing concentricity measuring method, the set of obturaging includes detent mechanism 1, surveys with Middle casing concentricity measuring tool
Measuring mechanism 2, null setting 3 and measurement table 4.
Detent mechanism 1 includes positioning outer shroud 11 and positioning internal ring 12, and positioning outer shroud 11 is by connecting rod 13 and positioning internal ring 12
It is fixedly connected, positions the cylindrical seam of outer shroud 11 and the female coaxial of positioning internal ring 12；Cylindrical seam on positioning outer shroud 11 is used
In with the secure fit of the Middle casing 5.
Measuring mechanism 2 includes measurement outer shroud 21 and measurement internal ring 22, and measurement outer shroud 21 is set on measurement internal ring 22, measurement
Outer shroud 21 with measurement internal ring 22 it is coaxial, measure internal ring 22 can relative measurement outer shroud 21 rotate；In the present embodiment, measurement structure
2 radial bearings 23 for also including little clearance, radial bearing 23 is arranged between measurement outer shroud 21 and measurement internal ring 22, by little trip
The radial bearing 23 of gap supports measurement internal ring 22, and measurement internal ring is in rotation process, it is ensured that measurement is accurate, high precision.
Measurement outer shroud 21 passes through radial direction seam location fit with positioning internal ring 12；
Measurement table 4 is arranged on measurement internal ring 22, and gauge outfit extends radially out the outer round surface of measurement internal ring 22；
Null setting 3 includes positioning cylindrical surface 31 and zeroing face 32, and zeroing face 32 is the circle coaxial with positioning cylindrical surface 31
Cylinder, positioning cylindrical surface 31 coordinates with the cylindrical seam of measurement outer shroud 21, and face 32 of returning to zero is used for the zeroing of measurement table.
Measurement outer shroud 21 coordinates with the cylindrical seam and measurement outer shroud 21 and positioning internal ring 12 of the cooperation of positioning cylindrical surface 31
Cylindrical seam is the same face of cylinder.
In the present embodiment, the end face for measuring outer shroud 21 is provided with measurement flange 24, and measurement flange 24 has been radially arranged to be cut
Bevel 25；The end face of positioning internal ring 12 is provided with locating flange, and the end face of the locating flange is provided with alignment pin, the positioning
That what is sold is cylindrical tangent with the cutting face 25.Have an advantage in that, it is ensured that the rigging position of measurement structure 2 and detent mechanism 1, it is ensured that
The uniqueness of stationary state.
In the present embodiment, rotary handle 27 is provided with the end face for measuring flange 24, can be turned by rotary handle 27
Measurement internal ring 22 is moved, measurement internal ring 22 drives measurement table 4 to rotate, and realization is obturaged and covers the measurement of 6 circumferential inner surfaces.
In the present embodiment, measure circumference uniform distribution on flange 24 and be provided with multiple connection unthreaded holes and dismounting screwed hole.
Can be using the convenient dismounting measuring mechanism 2 of jackscrew, the frictional force that can be coordinated with seam by dismounting screwed hole.
In the present embodiment, measurement table 4 selects dial gauge, and baffle plate 41 is provided with the gauge outfit of measurement table 4；Measuring mechanism 2
Gauge outfit adjusting lever 26 is also included, the one end of gauge outfit adjusting lever 26 is provided with cam, and the other end is provided with knob；Gauge outfit adjusting lever 26 with
The diameter parallel of measurement internal ring 22, the cam is contacted with baffle plate 41, and the knob is arranged on the end face of measurement flange 24.It is logical
Knob rotation gauge outfit adjusting lever 26 is crossed, stretching out or contracting for gauge outfit is realized in the diverse location of circumferencial direction by the cam
Return, when gauge outfit is stretched out, the inner surface contact with set 6 of obturaging, or contact with the zeroing face of null setting in zeroing.
It is last it is to be noted that：Above example only to illustrate technical scheme, rather than a limitation.To the greatest extent
Pipe has been described in detail with reference to the foregoing embodiments to the present invention, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or equivalent is carried out to which part technical characteristic and replaced
Change；And these modifications or replacement, do not make the essence of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution
God and scope.
Claims (8)
1. one kind is obturaged and is covered and Middle casing concentricity measuring method, it is characterised in that comprised the steps of：
Step one, the positioning cylindrical surface (31) of null setting (3) is stopped with the measurement outer shroud (21) of measuring mechanism (2) by radial direction
Mouth location fit, adjusts the measurement table (4) on the measurement internal ring (22) of measuring mechanism (2), makes gauge outfit and the zeroing of measurement table (4)
Zeroing face (32) contact of mechanism (3)；The measurement internal ring (22) of rotation measuring mechanism (2), the surface of the measurement table (4) is referred to
Pin returns to zero, and removes the null setting (3)；
Step 2, the positioning outer shroud (11) of detent mechanism (1) and Middle casing (5) is fixed by radial direction seam location fit and is connected
Connect, then by the positioning internal ring (12) of the measurement outer shroud (21) of measuring mechanism (2) in the step one and the detent mechanism (1)
It is fixedly connected by radial direction seam location fit, adjusts the measurement table (4), makes the measured circle of measurement gauge outfit and set (6) of obturaging
Cylinder is contacted；
Step 3, the measurement internal ring (22) of rotation measuring mechanism (2) at least a week, measurement table (4) is with measurement internal ring (22)
Rotate, record numerical value of the measurement table (4) in circumferencial direction diverse location.
2. obturage as claimed in claim 1 and cover and Middle casing concentricity measuring method, it is characterised in that：The step one
In, first by the measurement internal ring of rotary handle (27) rotation measuring mechanism (2) (22) a weeks, check whether measurement list index returns
To initial position, if returning to initial position, measurement internal ring (22) is rotated further, circumferencial direction uniformly measures at 8 points, adjusts measurement table
(4) jitter values at 8 positions are within 0.02mm；If measurement list index can not return to initial position, it is rotated further
Debugging the pointer of the measurement table to after rotating a week can return to initial position.
3. obturage as claimed in claim 2 and cover and Middle casing concentricity measuring method, it is characterised in that：The step 3
In, the measurement internal ring (22) on the measuring mechanism (2) is rotated one week, in the uniform 8 points of records of measurement internal ring (22) circumferencial direction
The numerical value of measurement table (4), then calculates circular runout value.
4. obturage as claimed in claim 2 and cover and Middle casing concentricity measuring method, it is characterised in that：The step 3
In, the measurement internal ring (22) on the measuring mechanism (2) is rotated into week more, each week is uniform in measurement internal ring (22) circumferencial direction
The numerical value of 8 points of records measurement table (4), then calculates circular runout value, and rotation calculates weekly the meansigma methodss of jitter values after many weeks.
5. one kind is obturaged and is covered and Middle casing concentricity measuring tool, for the set of obturaging as described in any one of Claims 1-4
With Middle casing concentricity measuring method, it is characterised in that：The set of obturaging is with Middle casing concentricity measuring tool comprising fixed
Position mechanism (1), measuring mechanism (2), null setting (3) and measurement table (4)；
The detent mechanism (1) includes positioning outer shroud (11) and positioning internal ring (12), and positioning outer shroud (11) is by connecting rod
(13) it is fixedly connected with positioning internal ring (12), the cylindrical seam of positioning outer shroud (11) and positioning internal ring (12)
Female coaxial；
The measuring mechanism (2) includes measurement outer shroud (21) and measurement internal ring (22), measurement outer shroud (21) and the measurement
Internal ring (22) is coaxial, and measurement internal ring (22) can rotate relative to measurement outer shroud (21)；
Measurement outer shroud (21) is with positioning internal ring (12) by radial direction seam location fit；
On measurement internal ring (22), gauge outfit extends radially out the cylindrical of measurement internal ring (22) to the measurement table (4)
Surface；
The null setting (3) includes positioning cylindrical surface (31) and zeroing face (32), the positioning cylindrical surface (31) and the tune
Zero layer (32) is coaxial, and the positioning cylindrical surface (31) coordinates with the cylindrical seam of measurement outer shroud (21), the zeroing face
(32) for the zeroing of measurement table (4).
6. obturage as claimed in claim 5 and cover and Middle casing concentricity measuring tool, it is characterised in that：The measurement outer shroud
(21) end face is provided with measurement flange (24), and the measurement flange has been radially arranged cutting face (25)；The positioning internal ring
(12) end face is provided with locating flange, and the end face of the locating flange is provided with alignment pin, the cylindrical and institute of the alignment pin
State cutting face (25) tangent.
7. obturage as claimed in claim 6 and cover and Middle casing concentricity measuring tool, it is characterised in that：The measurement flange
(24) circumference uniform distribution is provided with multiple connection unthreaded holes and dismounting screwed hole on.
8. obturage as claimed in claim 7 and cover and Middle casing concentricity measuring tool, it is characterised in that：The measurement table
(4) baffle plate (41) is provided with gauge outfit；The measuring mechanism (2) also includes gauge outfit adjusting lever (26), the gauge outfit adjusting lever
(26) one end is provided with cam, and the other end is provided with knob；The gauge outfit adjusting lever and the diameter parallel for measuring internal ring, institute
State cam to contact with the baffle plate (41), the knob is arranged on the end face of measurement flange (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710048655.XA CN106679551B (en) | 2017-01-23 | 2017-01-23 | Concentricity measuring method and tool for sealing sleeve and intermediary case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710048655.XA CN106679551B (en) | 2017-01-23 | 2017-01-23 | Concentricity measuring method and tool for sealing sleeve and intermediary case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106679551A true CN106679551A (en) | 2017-05-17 |
| CN106679551B CN106679551B (en) | 2020-02-04 |
Family
ID=58859527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710048655.XA Active CN106679551B (en) | 2017-01-23 | 2017-01-23 | Concentricity measuring method and tool for sealing sleeve and intermediary case |
Country Status (1)
| Country | Link |
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| CN (1) | CN106679551B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107576293A (en) * | 2017-10-11 | 2018-01-12 | 中国航发南方工业有限公司 | Cantilever fulcrum glitch detection frock and detection method |
| CN113199237A (en) * | 2021-04-21 | 2021-08-03 | 中国航发贵州黎阳航空动力有限公司 | Method for assembling low-pressure turbine guider of aircraft engine and coaxiality auxiliary control device |
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| CN204438995U (en) * | 2015-01-14 | 2015-07-01 | 武汉格瑞拓机械有限公司 | A kind of concentricity detection tool |
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| US4064633A (en) * | 1976-03-10 | 1977-12-27 | Wertepny Alexander W | Gauging instrument |
| US4235019A (en) * | 1976-11-20 | 1980-11-25 | Cho Chi L | Selfcentered automatic coordinate measuring machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107576293A (en) * | 2017-10-11 | 2018-01-12 | 中国航发南方工业有限公司 | Cantilever fulcrum glitch detection frock and detection method |
| CN107576293B (en) * | 2017-10-11 | 2020-02-07 | 中国航发南方工业有限公司 | Cantilever fulcrum bounce detection tool and detection method |
| CN113199237A (en) * | 2021-04-21 | 2021-08-03 | 中国航发贵州黎阳航空动力有限公司 | Method for assembling low-pressure turbine guider of aircraft engine and coaxiality auxiliary control device |
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| Publication number | Publication date |
|---|---|
| CN106679551B (en) | 2020-02-04 |
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