CN109916276A - The concentric measuring instrument of high pressure rotor inner hole - Google Patents
The concentric measuring instrument of high pressure rotor inner hole Download PDFInfo
- Publication number
- CN109916276A CN109916276A CN201910279410.7A CN201910279410A CN109916276A CN 109916276 A CN109916276 A CN 109916276A CN 201910279410 A CN201910279410 A CN 201910279410A CN 109916276 A CN109916276 A CN 109916276A
- Authority
- CN
- China
- Prior art keywords
- high pressure
- pressure rotor
- inner hole
- sensor
- measuring rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005259 measurement Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The present invention provides the concentric measuring instruments of high pressure rotor inner hole, belong to testing equipment field, including air-float turntable, connector sleeve, measuring rod and sensor, the air-float turntable includes rotary body and fixed hub, the measuring rod is detachable to be vertically installed in the rotary body lower end, the sensor is embedded in the measuring rod and is correspondingly arranged with the inner section of high pressure rotor, the connector sleeve is with the lower end of the fixed hub and the two is fixedly connected, described to connect the outer ring for being set in the rotary body and fix to the upper end of high pressure rotor.The present invention can fast and accurately measure the concentricity of high pressure rotor, and easy to operate.
Description
Technical field
The invention belongs to detection device apparatus fields, are related to the measuring device of aircraft engine high pressure rotor, more particularly to
The concentric measuring instrument of high pressure rotor inner hole of air floating structure.
Background technique
Aero-engine is a kind of highly complex and accurate thermal machine, and the hair of power needed for flying is provided for aircraft
Motivation, it directly affects the performance, reliability and economy of aircraft, and high pressure rotor is the important part of aero-engine, work
Make under state, ultrahigh speed operating, it is necessary to assure the concentricity of the rotor of high pressure, therefore aircraft engine high pressure rotor measures with one heart
Extremely important, there is no the measurement methods of convenience and high-efficiency at present.
If the precision of structure itself just not can guarantee using traditional structure, the cooperation precision of detection structure is much
Lower than tested part, then measurement structure is meaningless, the quality of part can not be more determined, if carrying out zero using three coordinates
The detection of part, not only equipment is expensive, and troublesome in poeration, and working efficiency is low.
Summary of the invention
The problem to be solved in the present invention is to be to provide a kind of concentric measuring instrument of high pressure rotor inner hole, can fast and accurately be surveyed
The concentricity of high pressure rotor is measured, and easy to operate.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: the concentric measuring instrument of high pressure rotor inner hole, including
Air-float turntable, connector sleeve, measuring rod and sensor, the air-float turntable include rotary body and fixed hub, and the measuring rod can
Removable vertical is installed in the rotary body lower end, and the sensor is embedded in the measuring rod and cuts in high pressure rotor
Face is correspondingly arranged；
The connector sleeve is with the lower end of the fixed hub and the two is fixedly connected, and the connection is set in the rotary body
Outer ring and the upper end of high pressure rotor is fixed.
Further, the measuring rod extend into the inner ring setting of high pressure rotor and is equipped with gap, the survey therebetween
Gauge rod and high pressure rotor are coaxially disposed.
Further, the measuring rod is equipped at least multiple locating slots, one institute of a locating slot matching setting
State sensor, the sensor be located in the locating slot and with measuring rod is detachable is fixedly connected, each locating slot
One end close to the sensor sensing head is equipped with the bit-avoiding slot for facilitating the sensor installation.
Further, the measuring rod is hollow cylinder structure.
Further, the connector sleeve and high pressure rotor are coaxially disposed, and are equipped in the connector sleeve and are kept away a T-slot, described
The part that rotary body protrudes the fixed hub is located at the upper end for keeping away a T-slot and the two is coaxially disposed, the measuring rod
It is connect across the lower end for keeping away a T-slot with the rotary body.
Further, the lower end of the connector sleeve is locking end, and the locking end is equipped with and is divided at least two
The locking slot that point Open Side Down, the locking end include the straightway of upper end and the segmental arc of lower end, the segmental arc it is straight
Diameter is gradually reduced downwards, and the outer ring of the locking end is equipped with locknut, and the upper end of the locknut is threadedly coupled with the straightway, institute
The lower end for stating nut is bonded setting with the segmental arc.
Further, the quantity of the locking slot is three and the axle center of the relatively described connector sleeve is uniformly arranged.
Further, the inner ring of the connector sleeve is equipped with the shoulder positioned to the upper end of high pressure rotor.
Further, further include control unit, receive the data detection signal of the sensor.
Further, the data detection signal is transferred to data processing module and controls its fortune by described control unit
Turn, it is that control centre's control display module shows the data processing module as a result, described control unit is using PLC control.
Compared with prior art, the present invention has the advantage that as follows with good effect.
1, then rotary body rotation of the present invention can drive measuring rod, and sensor can be realized rotate together during
Test to high pressure rotor inner hole surface, while the setting of connector sleeve realizes the clamping position to high pressure rotor, total with
On the basis of air-float turntable, connector sleeve and two parts being directly fixedly connected of measuring rod are related only to, part is few, and structure is simple,
It is low using high-accuracy processing cost, it reduces costs, it is easier to guarantee precision, convenient for assembly, the measuring instrument debugging after assembly
More convenient, overall precision is high, guarantees the accuracy of measurement result；
2, the position of the quantity of sensor and setting is determined according to the high pressure rotor specification of actual measurement, and different rotors needs
The inner hole surface to be measured is different, and the height of sensor is targetedly arranged, and the specification of Modifying surveying bar can be realized to different height
Press the measurement of rotor；
3, locking end and locknut be set, during high pressure rotor dismounting and change, it is only necessary to adjust locknut, other parts
It is motionless, it ensure that the registration accuracy of resetting, avoid measuring instrument secondary correction, promote testing efficiency；
4, the inner ring of connector sleeve is equipped with the shoulder positioned to the upper end of high pressure rotor, in replacement high pressure rotor test
When, it can be achieved that quickly positioning, guarantee that the positioning of each high pressure rotor is identical, the centre of gravity adjustment of entire measuring instrument avoided to proofread,
The registration accuracy for promoting the efficiency and reciprocating operation back and forth tested, guarantees the accuracy of measurement result.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the concentric measuring instrument of high pressure rotor inner hole of the present invention；
Fig. 2 is the cross-sectional view of the concentric measuring instrument of high pressure rotor inner hole of the present invention；
Fig. 3 is the portion the A detail drawing of Fig. 1 of the present invention；
Fig. 4 is the structural schematic diagram that connector sleeve of the present invention is overlooked；
Fig. 5 is the structural schematic diagram that connector sleeve of the present invention is looked up；
Fig. 6 is the structural schematic diagram in the concentric measuring instrument practical work process of high pressure rotor inner hole of the present invention.
Appended drawing reference:
1, air-float turntable；11, fixed hub；12, rotary body；2, connector sleeve；21, a T-slot is kept away；22, locking end；221,
Straightway；222, segmental arc；223, locking slot；224, shoulder；3, locknut；4, measuring rod；41, locating slot；42, bit-avoiding slot；5,
Sensor；6, high pressure rotor.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in Fig. 1~Fig. 6, the present invention be the concentric measuring instrument of high pressure rotor inner hole, including air-float turntable 1, connector sleeve 2,
Measuring rod 4 and sensor 5, air-float turntable 1 include rotary body 12 and fixed hub 11, and measuring rod 4 is detachable to be vertically installed in
12 lower end of rotary body, sensor 5 are embedded in measuring rod 4 and are correspondingly arranged with the inner section of high pressure rotor 6, connector sleeve 2 and solid
Dead axle covers 11 lower end and the two is fixedly connected, and connector sleeve 2 is located at the outer ring of rotary body 12 and consolidates to the upper end of high pressure rotor 6
Fixed, then the rotation of rotary body 12 can drive measuring rod 4, and sensor 5 can be realized rotate together during turns high pressure
The test of sub 6 inner hole surfaces, while the setting of connector sleeve 2 realizes the clamping position to high pressure rotor 6, total is turned with air bearing
On the basis of platform 1, connector sleeve 2 and 4 two parts being directly fixedly connected of measuring rod are related only to, part is few, and structure is simple, uses
High-accuracy processing cost is low, reduces costs, it is easier to guarantee precision, convenient for assembly, the measuring instrument after assembly is debugged also more
Convenient and efficient, overall precision is high, guarantees the accuracy of measurement result.
The application of air-float turntable 1 is more and more wider, can substantially reduce the frictional force between two parts, guarantees that part is opposite
The stationarity of movement, energy saving, pneumatically supported working principle are the setting air bearing channels on following part, and logical by air bearing
Road is blown upwards, and part above under the influence of gas, greatly reduces the frictional force between lower members, is conducive to above
The trace regulation of part, precision are high.
Preferably, measuring rod 4 extend into the inner ring setting of high pressure rotor 6 and is equipped with gap therebetween, facilitates non-contact
The installation of formula sensor 5, measuring rod 4 and high pressure rotor 6 are coaxially disposed, and guarantee the accuracy of concentricity test data.
Preferably, measuring rod 4 is equipped at least multiple locating slots 41, and a sensor 5 is arranged in a matching of locating slot 41,
Sensor 5 be located in locating slot 41 and with measuring rod 4 is detachable is fixedly connected, each locating slot 41 incudes close to sensor 5
One end of head is equipped with the bit-avoiding slot 42 for facilitating 5 installation of sensor, and sensor 5 can be contact or contactless, according to survey
The precision of amount is selected and is determined that the quantity of sensor 5 and the position of setting are true according to 6 specification of high pressure rotor of actual measurement
Fixed, the inner hole surface that different rotors needs to measure is different, and the height of sensor 5, the specification of Modifying surveying bar 4 is targetedly arranged
The measurement to different high pressure rotors 6 can be realized, measuring rod 4 can be directlyed adopt with rotary body 12 and is threadedly coupled, and can also be used
The fixed mode of screw carries out detachable connection, and structure is simple, easy to operate；It is highly preferred that measuring rod 4 is hollow cylinder knot
Structure, selection is convenient, at low cost, and intensity is high, facilitates processing, and can reduce the load of rotary body 12.
Preferably, connector sleeve 2 and high pressure rotor 6 are coaxially disposed, and are equipped in connector sleeve 2 and are kept away a T-slot 21, rotary body 12 is convex
The part of fixed hub 11 is located at the upper end for keeping away a T-slot 21 out and the two is coaxially disposed, and measuring rod 4 passes through and keeps away a T-slot 21
Lower end connect with rotary body 12, simple and compact for structure, and by built in connection structure, shape is more beautiful.
Preferably, the lower end of connector sleeve 2 is locking end 22, and locking end 22 is equipped with and is divided at least two-part open
Mouthful downward locking slot 223, locking end 22 include the straightway 221 of upper end and the segmental arc 222 of lower end, segmental arc 222 it is straight
Diameter is gradually reduced downwards, and the outer ring of locking end 22 is equipped with locknut 3, and the upper end of locknut 3 is threadedly coupled with straightway 221, nut
Lower end is bonded setting with segmental arc 222, and during nut is constantly locked, locknut 3 closely presses segmental arc 222, segmental arc
The tightening of 222 stress, completion grips 6 upper end of high pressure rotor, easy to operate, due to 6 dismounting and change of high pressure rotor
In the process, it is only necessary to adjust locknut 3, other parts are motionless, ensure that the registration accuracy of resetting, avoid measuring instrument two
Secondary correction promotes testing efficiency；It is highly preferred that the quantity of locking slot 223 is three and the axle center of opposite connector sleeve 2 is laid
It sets, structure is simple, under the premise of proof strength, is more advantageous to locking.
Preferably, the inner ring of connector sleeve 2 is equipped with the shoulder 224 positioned to the upper end of high pressure rotor 6, in replacement high pressure
, it can be achieved that quickly positioning, guarantees that the positioning of each high pressure rotor 6 is identical, avoid the weight of entire measuring instrument when rotor 6 is tested
Heart adjustment check and correction, promotes the registration accuracy of the efficiency and reciprocating operation back and forth tested, guarantees the accuracy of measurement result.
It preferably, further include control unit, accurate circle can be used in the data detection signal of receiving sensor 51, sensor 51
Grating sensor 51 completes the timely acquisition and processing of data；It is highly preferred that control unit will test data signal transmission to number
According to processing module and control its operating, control centre control display module show data processing module as a result, data processing mould
Block measures analysis module using roundness measuring equipment, and control unit is controlled using PLC, and programming is simple, easy to operate.
In practical work process, on the securing means by the installation of air-float turntable 1, air-float turntable 1 is fixed by connector sleeve 2
To tested 6 top of aircraft engine high pressure rotor, locknut 3 is locked, and measuring rod 4 is connected to the rotary body 12 of air-float turntable 1, more
A sensor 5 is attached on measuring rod 4, faces the inner hole surface of tested aircraft engine high pressure rotor 6, and rotary body 12 rotates,
It drives the sensor 5 on measuring rod 4 to rotate, measures circularity and bias of each measurement inner hole surface with respect to 1 rotary shaft of air-float turntable, warp
It crosses and calculates the concentricity measurement data it can be concluded that each inner headed face of high pressure rotor 6, this structure re-uses the height of air-float turntable 1
Precision and motion principle, the product of our company can be used in air-float turntable 1, patented, this structure can fast and accurately measure height
The concentricity of rotor 6 is pressed, and easy to operate, after the completion of a test, unclamping nut can quickly be removed, and be completed next
The installation of a high pressure rotor 6, convenient disassembly promote the efficiency of test.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (10)
1. the concentric measuring instrument of high pressure rotor inner hole, it is characterised in that: including air-float turntable, connector sleeve, measuring rod and sensor, institute
Stating air-float turntable includes rotary body and fixed hub, and the measuring rod is detachable to be vertically installed in the rotary body lower end, institute
Sensor is stated to be embedded in the measuring rod and be correspondingly arranged with the inner section of high pressure rotor；
The connector sleeve is with the lower end of the fixed hub and the two is fixedly connected, and described connect is set in the outer of the rotary body
It encloses and the upper end of high pressure rotor is fixed.
2. the concentric measuring instrument of high pressure rotor inner hole according to claim 1, it is characterised in that: the measuring rod extend into height
It presses the inner ring setting of rotor and is equipped with gap therebetween, the measuring rod and high pressure rotor are coaxially disposed.
3. the concentric measuring instrument of high pressure rotor inner hole according to claim 1, it is characterised in that: the measuring rod is equipped with extremely
Few multiple locating slots, locating slot matching one sensor of setting, the sensor are located in the locating slot
And with measuring rod is detachable is fixedly connected, each locating slot is equipped with conveniently close to one end of the sensor sensing head
The bit-avoiding slot of the sensor installation.
4. described in any item concentric measuring instruments of high pressure rotor inner hole according to claim 1~3, it is characterised in that: the measurement
Bar is hollow cylinder structure.
5. described in any item concentric measuring instruments of high pressure rotor inner hole according to claim 1~3, it is characterised in that: the connection
Set is coaxially disposed with high pressure rotor, is equipped in the connector sleeve and is kept away a T-slot, the rotary body protrudes the portion of the fixed hub
Set up separately in the upper end for keeping away a T-slot and the two coaxial arrangement, the measuring rod passes through lower end and the institute for keeping away a T-slot
State rotary body connection.
6. the concentric measuring instrument of high pressure rotor inner hole according to claim 5, it is characterised in that: the lower end of the connector sleeve is
Locking end, the locking end are equipped with and are divided into at least two-part locking slot that Open Side Down, and the locking end includes
The straightway of upper end and the segmental arc of lower end, the diameter of the segmental arc are gradually reduced downwards, and the outer ring of the locking end is equipped with
Locknut, the upper end of the locknut are threadedly coupled with the straightway, and the lower end of the nut is bonded setting with the segmental arc.
7. the concentric measuring instrument of high pressure rotor inner hole according to claim 6, it is characterised in that: the quantity of the locking slot is
The axle center of three and the relatively described connector sleeve is uniformly arranged.
8. the concentric measuring instrument of high pressure rotor inner hole according to claim 6, it is characterised in that: the inner ring of the connector sleeve is set
There is the shoulder positioned to the upper end of high pressure rotor.
9. according to claim 1~3,6~8 described in any item concentric measuring instruments of high pressure rotor inner hole, it is characterised in that: also wrap
Control unit is included, the data detection signal of the sensor is received.
10. according to right want 9 described in the concentric measuring instrument of high pressure rotor inner hole, it is characterised in that: described control unit will be described
Data detection signal is transferred to data processing module and controls its operating, and control centre's control display module is shown at the data
Manage module as a result, described control unit using PLC control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910279410.7A CN109916276A (en) | 2019-04-08 | 2019-04-08 | The concentric measuring instrument of high pressure rotor inner hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910279410.7A CN109916276A (en) | 2019-04-08 | 2019-04-08 | The concentric measuring instrument of high pressure rotor inner hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109916276A true CN109916276A (en) | 2019-06-21 |
Family
ID=66969035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910279410.7A Pending CN109916276A (en) | 2019-04-08 | 2019-04-08 | The concentric measuring instrument of high pressure rotor inner hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109916276A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289030A (en) * | 2020-03-07 | 2020-06-16 | 中国计量科学研究院 | Capacitive sensor stability testing device |
| CN114088046A (en) * | 2021-11-15 | 2022-02-25 | 北京航空航天大学 | Aeroengine detection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2019185A2 (en) * | 2007-07-25 | 2009-01-28 | Pratt & Whitney Canada Corp. | Method of balancing a gas turbine engine rotor |
| WO2015120745A1 (en) * | 2014-02-14 | 2015-08-20 | 哈尔滨工业大学 | Aircraft engine rotor air flotation assembly method and device based on gantry structure |
| CN105423876A (en) * | 2015-10-15 | 2016-03-23 | 哈尔滨工业大学 | Assembling measuring method and apparatus of large-scale high-speed revolution equipment based on tolerance regulation and control |
| CN105443169A (en) * | 2015-11-11 | 2016-03-30 | 上海交通大学 | Device and method for assembling multi-stage drum type rotor of aero-engine |
| WO2016065717A1 (en) * | 2014-10-29 | 2016-05-06 | 哈尔滨工业大学 | Aircraft engine rotor-stator assembly and five degrees of freedom-adjustment and positioning measurement method and device |
| CN106643466A (en) * | 2016-12-28 | 2017-05-10 | 中船重工（西安）东仪精密测量科技有限公司 | Bridge type cylindricity measuring device and work method thereof |
| CN209605747U (en) * | 2019-04-08 | 2019-11-08 | 天津中精微仪器设备有限公司 | The concentric measuring instrument of high pressure rotor inner hole |
-
2019
- 2019-04-08 CN CN201910279410.7A patent/CN109916276A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2019185A2 (en) * | 2007-07-25 | 2009-01-28 | Pratt & Whitney Canada Corp. | Method of balancing a gas turbine engine rotor |
| WO2015120745A1 (en) * | 2014-02-14 | 2015-08-20 | 哈尔滨工业大学 | Aircraft engine rotor air flotation assembly method and device based on gantry structure |
| WO2016065717A1 (en) * | 2014-10-29 | 2016-05-06 | 哈尔滨工业大学 | Aircraft engine rotor-stator assembly and five degrees of freedom-adjustment and positioning measurement method and device |
| CN105423876A (en) * | 2015-10-15 | 2016-03-23 | 哈尔滨工业大学 | Assembling measuring method and apparatus of large-scale high-speed revolution equipment based on tolerance regulation and control |
| CN105443169A (en) * | 2015-11-11 | 2016-03-30 | 上海交通大学 | Device and method for assembling multi-stage drum type rotor of aero-engine |
| CN106643466A (en) * | 2016-12-28 | 2017-05-10 | 中船重工（西安）东仪精密测量科技有限公司 | Bridge type cylindricity measuring device and work method thereof |
| CN209605747U (en) * | 2019-04-08 | 2019-11-08 | 天津中精微仪器设备有限公司 | The concentric measuring instrument of high pressure rotor inner hole |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289030A (en) * | 2020-03-07 | 2020-06-16 | 中国计量科学研究院 | Capacitive sensor stability testing device |
| CN114088046A (en) * | 2021-11-15 | 2022-02-25 | 北京航空航天大学 | Aeroengine detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105758321B (en) | Train wheel wheelboss inner hole diameter laser measuring system and its measuring method | |
| CN105588718A (en) | Machine tool spindle comprehensive property detection/monitoring test system and method | |
| CN201318937Y (en) | High-precision article size measuring device | |
| CN109916276A (en) | The concentric measuring instrument of high pressure rotor inner hole | |
| CN103363935B (en) | Full-automatic worm wheel double-meshing measuring machine | |
| CN210741740U (en) | Calibration device for torque sensor | |
| CN204128480U (en) | A kind of aircraft horizontal tail angular displacement sensor detecting device | |
| CN209605747U (en) | The concentric measuring instrument of high pressure rotor inner hole | |
| CN103438782A (en) | Solenoid valve working stroke detection device | |
| CN207936891U (en) | A kind of instrument for measuring pitch diameter of internal thread | |
| CN109612631B (en) | Engine rotational inertia measuring device | |
| CN107340111B (en) | Rotating vibration test platform for the test of Composite Cylindrical Shell constant wave vibration | |
| CN205981686U (en) | Wheel hub bearing rigid test machine | |
| CN112415094A (en) | Special ultrasonic detection tool and method for blade root of back arc surface of compressor moving blade | |
| CN207991495U (en) | Ball screw screw raceway starting point special gauge | |
| CN212762484U (en) | Improved ball bar instrument for simultaneously detecting multidimensional errors of machine tool | |
| CN213813455U (en) | Special ultrasonic detection tool for blade root of back arc surface of compressor moving blade | |
| CN205138427U (en) | Each journal center position measuring device of bent axle | |
| CN211084984U (en) | Dial indicator calibrating device | |
| CN211012903U (en) | Measuring device for cylindricity of large-aperture cylinder hole | |
| CN108871215B (en) | Edge appearance detection apparatus and method in the heavy shell ring operation of rolling | |
| CN209246939U (en) | A kind of large scale cylindrical shell morpheme Parameter Measuring device | |
| CN109373852B (en) | Device and method for measuring piston stroke of reciprocating compressor and application of device | |
| CN202329940U (en) | Measuring device for calibration of dynamic balancing machine | |
| CN206787531U (en) | A kind of contourgraph automatically adjusts balance weight mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |