CN205209472U - Measurement system of engine jet pipe axis - Google Patents
Measurement system of engine jet pipe axis Download PDFInfo
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- CN205209472U CN205209472U CN201521031786.XU CN201521031786U CN205209472U CN 205209472 U CN205209472 U CN 205209472U CN 201521031786 U CN201521031786 U CN 201521031786U CN 205209472 U CN205209472 U CN 205209472U
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- jet pipe
- sounding rod
- engine jet
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- displacement sensor
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Abstract
The utility model relates to a measurement system of engine jet pipe axis. This measurement system of engine jet pipe axis includes: leveling seat frame and rotation measurement device, the rotation measurement device includes the measuring stick, the rotation of measuring stick circumference, be equipped with angle sensor and a plurality of laser displacement sensor on the measuring stick, a plurality of laser displacement sensor are located on the not co -altitude of measuring stick for measure spray tube inner wall and corresponding laser displacement sensor's radial distance, angle sensor is located on the measuring stick, be used for measuring the rotation angle of measuring stick, the measuring stick is vertical set up in on the leveling seat frame, the leveling seat frame contacts with the spout of engine jet pipe. The utility model discloses a to the non -contact measurement of engine jet pipe axis, the damage of having avoided contact measurement to cause the spray tube inner wall, and measuring result is accurate.
Description
Technical field
The utility model relates to mechanical meaurement field, particularly relates to a kind of measuring system of engine jet pipe axis.
Background technology
Engine jet pipe axis, as the thrust line of engine, is the active line of engine synthesis thrust.Nozzle axis in power system particularly rocket tube axis needs Exact Design.Existing rocket tube axis is just determined by design, and its prerequisite is that mismachining tolerance is less, and the distortion of shaping rear jet is less.Real axis and design occur that deviation needs go to find by measuring.But use general measuring method, adopts survey instrument contact measurement engine jet pipe axis to have larger difficulty.
Axis is inner at jet pipe, and determined by jet pipe interior shape, generally there is protrusion jet pipe outside, and thus shaft centerline measurement needs to carry out in jet pipe inside.Nozzle axis directly to measure, and needs by measuring inwall each section of circle, and by cutting the round center of circle calculated, the center of circle connecting each section of circle obtains nozzle axis.Nozzle wall each section of circle is measured, and the inner circle that cuts may be oval, and measurement point needs more, just can accurately draw home position.But be not easy to ensure to measure on the circle of same section of inside in routine measurement, because jet pipe is similar taper, measure at not same section of circle and will bring comparatively big error, the error that measurement itself brings is greater than the deviation of axis reality, and such measurement becomes nonsensical.
Engine jet pipe particularly rocket tube is expensive, forbids to collide with, and needs to use survey instrument to touch nozzle wall in routine measurement, can collide with unavoidably or scratch inwall, causing damage.
Utility model content
Technical problem to be solved in the utility model is: the measuring method of existing contact nozzle axis can cause damage to nozzle wall and the large problem of measuring error.
For solving the problems of the technologies described above, the utility model proposes a kind of measuring system of engine jet pipe axis on the one hand, and the measuring system of this engine jet pipe axis comprises:
Leveling mounting and rotary measurement device;
Described rotary measurement device comprises sounding rod, the rotation of described sounding rod circumference;
Described sounding rod is provided with angular transducer and multiple laser displacement sensor;
Described multiple laser displacement sensor is positioned on the differing heights of described sounding rod, for measuring the radial distance of nozzle wall and corresponding laser displacement sensor;
Described angular transducer is positioned on described sounding rod, for measuring the anglec of rotation of described sounding rod;
Described sounding rod is vertically arranged on described leveling mounting;
Described leveling mounting contacts with the spout of engine jet pipe.
Alternatively, the measuring system of this engine jet pipe axis also comprises signal record and processor;
Described signal record is connected with multiple laser displacement sensor with described angular transducer with processor, for obtaining the axis of described jet pipe according to the anglec of rotation of the inwall of described jet pipe and the radial distance of corresponding laser displacement sensor and described sounding rod.
Alternatively, described leveling mounting comprises clutch shaft bearing and the second bearing;
Described sounding rod comprises rotating shaft bar and multiple exhibition bar;
Described rotating shaft bar is vertically arranged on described leveling mounting through described clutch shaft bearing and described second bearing;
Described multiple laser displacement sensor is arranged on described multiple exhibition bar respectively.
Alternatively, described angular transducer is positioned at the bottom of described rotating shaft bar, and the rotating shaft of described angular transducer is connected with the axle center of described rotating shaft bar.
Alternatively, the shape of described leveling mounting is triangle.
Alternatively, described sounding rod is positioned on the predetermined central axis of the measuring system of engine jet pipe axis.
Alternatively, the measuring system of this engine jet pipe axis also comprises:
Three upper posture adjustment plates and three guide poles;
Described upper posture adjustment plate is arranged on described leveling mounting, for contacting with the spout of engine jet pipe, regulates spout to be in horizontality;
Described three guide poles are vertically arranged on the position of described three upper posture adjustment plates away from described sounding rod respectively, to play the guiding role to the placement of engine jet pipe.
Alternatively, the measuring system of this engine jet pipe axis also comprises:
Three lower posture adjustment plates;
Described three lower posture adjustment plates are arranged at the bottom of described leveling mounting, self are in horizontality for regulating leveling mounting (1).
The utility model proposes a kind of measuring method of engine jet pipe axis on the other hand, and the method comprises:
Obtain the radial distance of nozzle wall and corresponding laser displacement sensor;
Obtain the anglec of rotation of sounding rod;
Obtain the center of circle of multiple sections of circles according to the anglec of rotation of the inwall of described jet pipe and the radial distance of corresponding laser displacement sensor and described sounding rod, connect each section of round heart and obtain engine jet pipe axis.
Alternatively, the radial distance of the described inwall according to described jet pipe and corresponding laser displacement sensor and the anglec of rotation of described sounding rod obtain the center of circle of multiple sections of circles, comprising:
Adopt least square fitting method to carry out matching to the inwall of described jet pipe and the radial distance of corresponding laser displacement sensor and the anglec of rotation of described sounding rod, obtain the center of circle of multiple sections of circles.
The measuring system of the engine jet pipe axis that the utility model proposes and method, achieve the non-contact measurement to engine jet pipe axis, avoid the damage that contact type measurement causes nozzle wall, the radial distance of multiple sections of circles of engine jet pipe inwall is obtained by multiple laser displacement sensor, the anglec of rotation of sounding rod is obtained by angular transducer, obtain the axis of jet pipe according to the radial distance of multiple sections of circles and the anglec of rotation of sounding rod, measurement result is accurate.
Accompanying drawing explanation
Can understanding feature and advantage of the present utility model clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the utility model, in the accompanying drawings:
Fig. 1 shows the structural representation of the measuring system of the engine jet pipe axis of the utility model embodiment;
Fig. 2 shows the structural representation of engine jet pipe;
Fig. 3 shows the structural representation of lower posture adjustment plate;
Fig. 4 shows the structural representation of leveling mounting;
Fig. 5 shows the schematic diagram of lower posture adjustment plate and leveling mounting abutting joint;
Fig. 6 shows the structural representation of posture adjustment plate;
Fig. 7 shows the scheme of installation of guide pole, upper posture adjustment plate and leveling mounting;
Fig. 8 shows bearing mounting structure schematic diagram; ;
Fig. 9 shows the structural representation of sounding rod;
Figure 10 shows the connection diagram of sounding rod and bearing;
Figure 11 shows the scheme of installation of laser displacement sensor;
Figure 12 shows the scheme of installation of angular transducer and leveling mounting;
Figure 13 shows the schematic flow sheet of the measuring method of the engine jet pipe axis of the utility model embodiment;
Figure 14 shows the schematic diagram of corner-time that angular transducer is measured;
Figure 15 shows the schematic diagram of the distance verses time that laser displacement sensor is measured;
Figure 16 shows corner-distance relation curve and cuts the schematic diagram of circle;
Figure 17 shows the schematic diagram that four are cut circle and nozzle axis.
In Fig. 1-Figure 12:
1 leveling mounting, 2 rotary measurement device;
Posture adjustment plate, 14 times posture adjustment plates, 15 guide poles on 11 clutch shaft bearings, 12 second bearings, 13;
21 sounding rods, 22 angular transducers, 23 laser displacement sensors;
211 rotating shaft bars, 212 exhibition bars;
141 first top nuts, 142 first lower nuts;
131 second top nuts, 132 second lower nuts;
211 ' threaded connection hole.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Fig. 1 shows the structural representation of the measuring system of the engine jet pipe axis of the utility model embodiment.As shown in Fig. 1-Figure 12, the measuring system of this engine jet pipe axis comprises:
Leveling mounting 1 and rotary measurement device 2;
Rotary measurement device 2 comprises sounding rod 21, the circumferential rotation of sounding rod 21;
Sounding rod 21 is provided with angular transducer 22 and multiple laser displacement sensor 23;
Multiple laser displacement sensor 23 is positioned on the differing heights of sounding rod 21, for measuring the radial distance of nozzle wall and corresponding laser displacement sensor;
Angular transducer 22 is positioned on sounding rod 21, for measuring the anglec of rotation of sounding rod 21;
Sounding rod 21 is vertically arranged on leveling mounting 1;
Leveling mounting 1 contacts with the spout of engine jet pipe.
The measuring system of the engine jet pipe axis of the present embodiment, achieve the non-contact measurement to engine jet pipe axis, avoid the damage that contact type measurement causes nozzle wall, the radial distance of multiple sections of circles of engine jet pipe inwall is obtained by multiple laser displacement sensor, the anglec of rotation of sounding rod is obtained by angular transducer, obtain the axis of jet pipe according to the radial distance of multiple sections of circles and the anglec of rotation of sounding rod, measurement result is accurate.
In the optional embodiment of one, this engine jet pipe system for measuring axes also comprises signal record and processor (not shown);
Signal record is connected with multiple laser displacement sensor 23 with angular transducer 22 with processor, for obtaining the axis of described jet pipe according to the anglec of rotation of the inwall of described jet pipe and the radial distance of corresponding laser displacement sensor and described sounding rod 21.
In actual applications, use two power supplies to power to laser displacement sensor and angular transducer respectively, use the displacement of a signal recorder recording laser and angle signal.
Further, leveling mounting 1 comprises clutch shaft bearing 11 and the second bearing 12;
Sounding rod 21 comprises rotating shaft bar 211 and multiple exhibition bar 212;
Rotating shaft bar 211 is vertically arranged on leveling mounting 1 through clutch shaft bearing 11 and the second bearing 12;
Multiple laser displacement sensor 23 is arranged on multiple exhibition bar 212 respectively.
Further, angular transducer 22 is positioned at the bottom of rotating shaft bar 211, and the rotating shaft of angular transducer 22 is connected with the axle center of rotating shaft bar 211.
The measuring system of the engine jet pipe axis of the present embodiment solves the inner same section of continuous multimetering problem of circle of jet pipe and non-contact measurement problem.
Preferably, the shape of leveling mounting 1 is triangle.Sounding rod 21 is positioned on the predetermined central axis of the measuring system of engine jet pipe axis.
The measuring system of this engine jet pipe axis also comprises: three upper posture adjustment plates 13 and three guide poles 15;
Upper posture adjustment plate 13 is arranged on leveling mounting 1, for contacting with the spout of engine jet pipe, regulates spout to be in horizontality;
Three guide poles 15 are vertically arranged on the position of three upper posture adjustment plates 13 away from described sounding rod 21, to play the guiding role to the placement of engine jet pipe respectively.
The measuring system of this engine jet pipe axis also comprises: three lower posture adjustment plates (14);
Described three lower posture adjustment plates (14) are arranged at the bottom of described leveling mounting (1), self are in horizontality for regulating leveling mounting (1).
In actual applications, sounding rod is formed by a rotating shaft bar and some exhibition bar vertical weldings, and rotating shaft bar is placed on leveling mounting by socket bearing, and sounding rod can realize continuous rotation around bearing, exhibition boom end installs laser displacement sensor, rotating shaft bar lower end connection angle sensor.Lower posture adjustment plate is in horizontality for adjusting whole measuring system.Upper posture adjustment plate is for laying the spout of engine jet pipe, and the spout plane adjusting engine jet pipe (as shown in Figure 2) is in horizontality.Guide pole is used for playing the guiding role when engine jet pipe docks with upper posture adjustment plate.
The screw rod of lower posture adjustment plate 14 (as shown in Figure 3) is through leveling mounting 1 base (as shown in Figure 4) through hole, use the first top nut 141, second lower nut 142 to grip (as described in Figure 5), rotate adjustment mounting upper end surface in horizontality by nut.The screw rod of upper posture adjustment plate 13 (as shown in Figure 6), through leveling mounting 1 footstock through hole, uses the first top nut 131, second lower nut 132 to grip (as shown in Figure 7).Guide pole 15 is screwed onto on leveling mounting 1, for controlling the directivity in jet pipe and upper posture adjustment plate 13 docking operation.
In the middle part of leveling mounting 1, machined counterbore, for laying upper and lower each bearing, using radial screw to ensure bearing and leveling mounting 1 wringing fit (as shown in Figure 8).The internal diameter of two bearings gone here and there by the rotating shaft bar 211 of sounding rod 21 (as shown in Figure 9), rotating shaft bar 211 and bearing inner ring slightly wringing fit, and the convex on rotating shaft bar is pressed in (as shown in Figure 10) in the inner ring of head bearing; The length of exhibition bar 212 is preferably according to the adjusted size of described engine jet pipe, and because jet pipe is taper, up-narrow and down-wide, therefore, the length of the multiple exhibition bars shown in Fig. 9 increases from top to bottom successively.The measuring system of this nozzle axis, measuring system integral level state can by the leveling of lower posture adjustment plate, and the horizontality of tested object by the leveling of upper posture adjustment plate, can realize wheel measuring by sounding rod around bearing rotary.
That measures as required cuts circle quantity, the measuring distance of laser displacement and the size of the inner mesh generation sounding rod 21 of engine jet pipe, ensure that the size of sounding rod 21 is less than the inner shape face of jet pipe, even if the height of sounding rod 21 is less than the height of jet pipe, make the radius being generally less than jet pipe of the length of sounding rod being opened up bar 211, make swinging mounting in measurement not encounter nozzle wall, and meet laser displacement measurement distance.
Laser displacement sensor 23 installed by the exhibition bar 211 of sounding rod 21.Laser displacement sensor 23 is fixedly connected with (as shown in figure 11) with sounding rod 21 by the threaded connection hole 211 ' of processing on exhibition bar 211, and laser displacement sensor 23 sends the distance between laser measurement sensor and nozzle wall.The shape of sounding rod and the quantity of laser displacement sensor are cut circle quantity according to the interior shape of jet pipe and measurement and are adjusted.
Angular transducer 22 housing is arranged on leveling mounting 1, and the test rotating shaft of angular transducer 22 is connected (as shown in figure 12) with rotating shaft bar 211 axle center of sounding rod 21, for measuring the angle that sounding rod rotates.
In actual applications, engine jet pipe is laid with the process of leveling as follows: adopt crane that jet pipe is sling, engine jet pipe mouth down, jet pipe slowly falls, nozzle hole outline edge is observed consistent with three guide pole distances in docking operation, nozzle hole is finally adjacent to posture adjustment plate, jet pipe and the not relative motion of upper posture adjustment plate.
By rotating the nut of upper posture adjustment plate, posture adjustment plate being elevated, use surveyor's staff to measure nozzle hole angle, thus adjustable jet tube mouth being in horizontality.
Power supply is connected to sensor, and connection signal register, check that laser displacement sensor gives off laser beam, register normally can receive the displacement signal of laser displacement sensor and the angle signal of angular transducer, can carry out nozzle axis and measure.In measuring process, use manually slow roughly at the uniform velocity rotary motion support, revolving turns around measures end.Check measurement is to whole laser displacement data and corner data.
According to laser displacement measurement data and outer corner measurement data, adopt least square method, matching obtains the center of circle of each section of circle, connects each section of round gains in depth of comprehension to nozzle axis.
Figure 13 shows the schematic flow sheet of the measuring method of the engine jet pipe axis of the utility model embodiment.As shown in figure 13, the measuring method of the engine jet pipe axis of this embodiment comprises:
S131: the radial distance obtaining nozzle wall and corresponding laser displacement sensor;
S132: the anglec of rotation obtaining sounding rod;
S133: the center of circle obtaining multiple sections of circles according to the anglec of rotation of the inwall of described jet pipe and the radial distance of corresponding laser displacement sensor and described sounding rod, connects each section of round heart and obtains engine jet pipe axis.
Further, the radial distance of the described inwall according to described jet pipe and corresponding laser displacement sensor and the anglec of rotation of described sounding rod obtain the center of circle of multiple sections of circles, comprising:
Adopt least square fitting method to carry out matching to the inwall of described jet pipe and the radial distance of corresponding laser displacement sensor and the anglec of rotation of described sounding rod, obtain the center of circle of multiple sections of circles.
Be introduced below in conjunction with the measuring method of a specific embodiment to engine jet pipe axis of the present utility model.
The first step: swinging mounting designs
Require that measuring inner four of jet pipe cuts circle, using four circle center line connectings cutting circle as nozzle axis.The measuring distance of the laser displacement sensor selected is 80mm-300mm, and according to jet pipe inside mesh generation swinging mounting, see Fig. 9, the exhibition pole length of sounding rod is less than a jet pipe inside section circular diameter and is about 260mm, when on the exhibition bar that laser displacement sensor is arranged on sounding rod, distance nozzle wall face is about 130mm, meet the measuring distance of laser displacement sensor, ensure that swinging mounting and laser displacement sensor can not encounter nozzle wall.
Second step: build rotary measurement device
Lower posture adjustment plate screw rod, through leveling mounting base plate through holes, uses upper and lower nut to grip, and rotates adjustment mounting upper end surface in horizontality by nut.Upper posture adjustment plate screw rod, through mounting footstock through hole, uses upper and lower nut to grip.Guide pole is screwed onto on mounting, sees Fig. 7.
Two bearings are placed in the counterbore in the middle part of leveling mounting, and by the radial screw on leveling mounting, extrusion outer race, makes bearing and mounting wringing fit, see Fig. 9.The rotating shaft bar string of sounding rod crosses the internal diameter of two bearings, and the convex on swinging mounting rotating shaft bar is pressed in the inner ring of head bearing, and the gap between rotating shaft bar and lower bearing internal diameter, by filling in tagger to eliminate, makes rotating shaft bar and bearing bore diameter wringing fit, sees Figure 11.
3rd step: sensor is installed
The exhibition boom end of sounding rod installs laser displacement sensor.Laser displacement sensor is fixedly connected with sounding rod by the threaded connection hole that sounding rod is processed, and Figure 11, for opening up bar axially, is seen in the direction of laser.
Angle sensor shell is arranged on mounting, and the test rotating shaft of angular transducer is connected with sounding rod axle center, sees Figure 12, for measuring the angle that sounding rod rotates.
4th step: engine jet pipe is laid and leveling
Adopt crane that jet pipe is sling, engine jet pipe mouth down, jet pipe slowly falls, and observe nozzle hole profile in docking operation with three guide poles apart from consistent, nozzle hole is finally adjacent to posture adjustment plate, jet pipe and the not relative motion of upper posture adjustment plate.
By rotating the nut of upper posture adjustment plate, posture adjustment plate being elevated, use surveyor's staff to measure nozzle hole angle, thus adjustable jet tube mouth being in horizontality.
5th step, engine jet pipe cuts diameter to Distance geometry rotation angle measurement
Power supply is connected to sensor, and connection signal register, check that laser displacement sensor gives off laser beam, register normally can receive the displacement signal of laser displacement sensor and the angle signal of angular transducer, can carry out nozzle axis and measure.In measuring process, use manually slow roughly at the uniform velocity rotary motion support, revolving turns around measures end.Check measurement is to corner data (see Figure 14) and whole laser displacement data.
6th step: engine jet pipe axis-line analysis
Laser displacement measurement data add upper sensor mounting points and rotating shaft distance obtains jet pipe inner laser point (cutting on circle) and rotating shaft distance r (see Figure 15).The measurement data unit of corner is degree, needs to be converted into radian w, and according to distance r and corner w, adopt least square method, matching obtains each section of circle and the center of circle, and corner-distance relation curve is shown in Figure 16 with section circle (fitting circle) and the center of circle.Adopt least square fitting by distance r and corner w, obtain cutting circle and the center of circle.Connect each section of round gains in depth of comprehension to nozzle axis, Figure 17 shows four and cuts circle and nozzle axis.
The measuring system of the engine jet pipe axis that the utility model proposes and method also can be used for shaft centerline measurement and the roundness measurement of other rotary shell part.
The measuring system of the engine jet pipe axis that the utility model proposes and method, achieve the non-contact measurement to engine jet pipe axis, avoid the damage that contact type measurement causes nozzle wall, the radial distance of multiple sections of circles of engine jet pipe inwall is obtained by multiple laser displacement sensor, the anglec of rotation of sounding rod is obtained by angular transducer, obtain the axis of jet pipe according to the radial distance of multiple sections of circles and the anglec of rotation of sounding rod, measurement result is accurate.
Although describe embodiment of the present utility model by reference to the accompanying drawings, but those skilled in the art can make various modifications and variations when not departing from spirit and scope of the present utility model, such amendment and modification all fall into by within claims limited range.
Claims (8)
1. a measuring system for engine jet pipe axis, is characterized in that, comprising:
Leveling mounting (1) and rotary measurement device (2);
Described rotary measurement device (2) comprises sounding rod (21), described sounding rod (21) circumferential rotation;
Described sounding rod (21) is provided with angular transducer (22) and multiple laser displacement sensor (23);
Described multiple laser displacement sensor (23) is positioned on the differing heights of described sounding rod (21), for measuring the radial distance of nozzle wall and corresponding laser displacement sensor;
Described angular transducer (22) is positioned on described sounding rod (21), for measuring the anglec of rotation of described sounding rod (21);
Described sounding rod (21) is vertically arranged on described leveling mounting (1);
Described leveling mounting (1) contacts with the spout of engine jet pipe.
2. the measuring system of engine jet pipe axis according to claim 1, is characterized in that, also comprises signal record and processor;
Described signal record is connected with multiple laser displacement sensor (23) with described angular transducer (22) with processor, for obtaining the axis of described jet pipe according to the anglec of rotation of the inwall of described jet pipe and the radial distance of corresponding laser displacement sensor and described sounding rod (21).
3. the measuring system of engine jet pipe axis according to claim 1, is characterized in that, described leveling mounting (1) comprises clutch shaft bearing (11) and the second bearing (12);
Described sounding rod (21) comprises rotating shaft bar (211) and multiple exhibition bar (212);
Described rotating shaft bar (211) is vertically arranged on described leveling mounting (1) through described clutch shaft bearing (11) and described second bearing (12);
Described multiple laser displacement sensor (23) is arranged on described multiple exhibition bar (212) respectively.
4. the measuring system of engine jet pipe axis according to claim 3, is characterized in that,
Described angular transducer (22) is positioned at the bottom of described rotating shaft bar (211), and the rotating shaft of described angular transducer (22) is connected with the axle center of described rotating shaft bar (211).
5. the measuring system of engine jet pipe axis according to claim 3, is characterized in that, the shape of described leveling mounting (1) is triangle.
6. the measuring system of engine jet pipe axis according to claim 3, is characterized in that, described sounding rod (21) is positioned on the predetermined central axis of the measuring system of engine jet pipe axis.
7. the measuring system of engine jet pipe axis according to claim 3, is characterized in that, also comprise:
Three upper posture adjustment plates (13) and three guide poles (15);
Described upper posture adjustment plate (13) is arranged on described leveling mounting (1), for contacting with the spout of engine jet pipe, regulates spout to be in horizontality;
Described three guide poles (15) are vertically arranged on the position of described three upper posture adjustment plates (13) away from described sounding rod (21) respectively, to play the guiding role to the placement of engine jet pipe.
8. the measuring system of engine jet pipe axis according to claim 3, is characterized in that, also comprise:
Three lower posture adjustment plates (14);
Described three lower posture adjustment plates (14) are arranged at the bottom of described leveling mounting (1), self are in horizontality for regulating leveling mounting (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031786.XU CN205209472U (en) | 2015-12-11 | 2015-12-11 | Measurement system of engine jet pipe axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031786.XU CN205209472U (en) | 2015-12-11 | 2015-12-11 | Measurement system of engine jet pipe axis |
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| CN205209472U true CN205209472U (en) | 2016-05-04 |
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| CN201521031786.XU Active CN205209472U (en) | 2015-12-11 | 2015-12-11 | Measurement system of engine jet pipe axis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973188A (en) * | 2015-12-11 | 2016-09-28 | 北京强度环境研究所 | System and method for measurement of engine jet pipe axis |
| CN110954037A (en) * | 2019-12-13 | 2020-04-03 | 天津大学 | Scanning measuring device and method for deep hole axis |
-
2015
- 2015-12-11 CN CN201521031786.XU patent/CN205209472U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973188A (en) * | 2015-12-11 | 2016-09-28 | 北京强度环境研究所 | System and method for measurement of engine jet pipe axis |
| CN105973188B (en) * | 2015-12-11 | 2019-03-19 | 北京强度环境研究所 | The measuring system and method for engine jet pipe axis |
| CN110954037A (en) * | 2019-12-13 | 2020-04-03 | 天津大学 | Scanning measuring device and method for deep hole axis |
| CN110954037B (en) * | 2019-12-13 | 2021-11-02 | 天津大学 | Scanning measuring device and method for deep hole axis |
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