WO2012074225A1 - Dispositif pour mesurer avec précision le degré de parallélisme et d'horizontalité entre des rouleaux comportant un capteur gyroscopique et des capteurs de niveau, et procédé de mesure d'alignement de rouleaux l'utilisant - Google Patents
Dispositif pour mesurer avec précision le degré de parallélisme et d'horizontalité entre des rouleaux comportant un capteur gyroscopique et des capteurs de niveau, et procédé de mesure d'alignement de rouleaux l'utilisant Download PDFInfo
- Publication number
- WO2012074225A1 WO2012074225A1 PCT/KR2011/008636 KR2011008636W WO2012074225A1 WO 2012074225 A1 WO2012074225 A1 WO 2012074225A1 KR 2011008636 W KR2011008636 W KR 2011008636W WO 2012074225 A1 WO2012074225 A1 WO 2012074225A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roll
- sensor
- inclination
- measuring
- rolls
- 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.)
- Ceased
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
- G01B21/24—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes for testing alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
- G01C9/26—Details
- G01C9/28—Mountings
Definitions
- the technical field of the present invention relates to a measuring device for measuring parallel and horizontal degrees of rolls.
- a roll parallel and horizontal measuring apparatus capable of measuring the parallel and horizontalness of each roll so as to constantly modify the parallelism and the inclination between the rolls of the equipment for manufacturing the film and the like, and a field for measuring methods using the same to be.
- the film passing through the roll is meandering or mutually folded to produce a problem that the film is not uniformly produced.
- each roll is measured by using a level containing liquid and bubbles, and one reference roll is set to match the inclination of the reference roll.
- the tilt was adjusted, and tape measure, dial gauge, and laser rangefinder were used to solve the problem of parallel mismatch.
- the conventional method has a problem in that the cost for the purchase and maintenance of the equipment is excessive, because the equipment for the parallel and the equipment for the horizontal alignment must be provided separately.
- the parallel and horizontal precision precision measuring device between the gyro sensor and the level sensor and the roll alignment measuring method according to the present invention aims to solve the following problems.
- the use of the measuring device is to determine whether the measuring device is accurately seated on the outer surface of the roll to enable more accurate adjustment of the parallel and inclination between the rolls.
- Parallel and horizontal precision precision measuring device between the gyro sensor and the level sensor provided in accordance with an embodiment of the present invention is installed in the housing with a display unit on one side, the inside of the housing, measuring the parallelism between a plurality of rolls
- a control unit connected to the sensor unit and the display unit to convert the value sensed by the sensor unit to display the display unit, and a bottom portion of the housing includes a seating unit which contacts the outer surface of the roll in parallel with the rotation axis of the roll. It is preferable.
- the gyro sensor of the parallel and horizontal precision precision measuring device between the gyro sensor and the level sensor provided in accordance with an embodiment of the present invention preferably detects the balance of the roll and the direction of the rotation axis of the roll.
- the control unit of the parallel and horizontal precision precision measuring device between the gyro sensor and the level sensor provided in accordance with an embodiment of the present invention preferably stores the inclination value of the roll measured by the first level sensor and the second level sensor. .
- the seating part of the parallel and horizontal precision precision measuring device between the rolls provided with the gyro sensor and the level sensor is inclined toward both edges of the bottom surface of the housing from the upper part of the seating part formed in the center of the housing, and Consists of a pair of roll contact surface formed with a, the seating portion consisting of the upper line and the roll contact surface is preferably formed in a ' ⁇ ' shape so as to be in contact with the outer surface of the roll.
- a pressure sensor is disposed to detect the position of the roll contacting the seating part.
- control unit of the parallel and horizontal precision precision measuring device between the gyro sensor and the level sensor provided in accordance with an embodiment of the present invention, when the position of the roll detected by the pressure sensor is not symmetrical with respect to the seat upper line, It is preferable to generate an event on the display unit.
- At least two or more insertion grooves are formed on the bottom of the housing of the parallel and horizontal precision precision measuring device between the rolls provided with the gyro sensor and the level sensor according to an embodiment of the present invention, and the bottom of the housing corresponds to the diameter of the roll on the bottom. It is preferable that the auxiliary jig formed with an auxiliary seating portion formed so that the upper surface has an insertion protrusion inserted into the insertion groove.
- the auxiliary seating portion of the parallel and horizontal precision precision measuring device between the rolls provided with the gyro sensor and the level sensor according to the embodiment of the present invention is formed on the auxiliary roll contact surface and the auxiliary roll contact surface whose cross section is formed in an arc shape or a ' ⁇ ' shape. Consisting of the pressure sensor is disposed, the pressure sensor disposed on the auxiliary roll contact surface is preferably connected to the control unit through a connector formed in the insertion projection and the insertion groove.
- Roll alignment measurement method using a parallel and horizontal precision precision measuring device between the gyro sensor and the level sensor provided in accordance with an embodiment of the present invention S1 step of measuring the rotation axis direction of one of the plurality of rolls, and a plurality of The rotation axis direction of one roll measured in step S1 and S2 by comparing the rotation axis direction of one roll measured in step S2 with the rotation axis direction of one roll measured in step S1 and the rotation axis direction of the other roll measured in step S2. If the rotation axis direction of the other roll measured in the step does not match, it is preferable to include the step S3 for generating an event on the display unit.
- the step S1 is pressure sensing. If the position of one roll detected by the sensor is not symmetrical with respect to the seating upper line further comprises a step S1a for generating an event on the display, the step S2 is the position of the other roll detected by the pressure sensor sensor If it is not symmetric with respect to the upper line it is preferable to further include a step S2a for generating an event on the display unit.
- a roll alignment measuring method using a gyro sensor and a level sensor provided with a parallel and horizontal precision measuring device between rolls further includes an S1b step of measuring an inclination of one roll and an S2 step.
- the step S2b further includes measuring the inclination of the other roll
- step S3 further includes the step S3b of generating an event on the display unit when the inclination of the roll measured in step S1b and the inclination measured in step S2b do not match. It is preferable to include.
- the parallel and horizontal precision precision measuring device and roll alignment measuring method between the rolls equipped with the gyro sensor and the level sensor according to the present invention measure the direction and inclination of the rotation axis of the roll simultaneously using a gyro sensor and a pair of level sensors. It has the effect of quickly matching the parallel and the inclination between the rolls, and the pressure measuring sensor that can detect the position of the roll is installed in the seat of the measuring device, so that the measuring device is correctly mounted on the outer surface of the roll when the measuring device is used. It is effective to know.
- FIG. 1 is a perspective view of a parallel and horizontal precision measurement device between the gyro sensor and the roll provided with a level sensor according to an embodiment of the present invention.
- Figure 2 is a perspective view showing a seating portion of the parallel and horizontal precision measuring device between the gyro sensor and the level sensor provided in accordance with an embodiment of the present invention.
- Figure 3 is a block diagram of a parallel and horizontal precision measurement device between the gyro sensor and the roll provided with a level sensor according to an embodiment of the present invention.
- FIGS. 4A to 4C are perspective views of an auxiliary jig according to another exemplary embodiment of the present invention.
- FIG. 5 is a flow chart of a roll alignment measurement method according to an embodiment of the present invention.
- Parallel and horizontal precision precision measuring device between the gyro sensor and the level sensor provided in accordance with an embodiment of the present invention is installed in the housing with a display unit on one side, the inside of the housing, measuring the parallelism between a plurality of rolls
- a control unit connected to the sensor unit and the display unit to convert the value sensed by the sensor unit to display the display unit, and a bottom portion of the housing includes a seating unit which contacts the outer surface of the roll in parallel with the rotation axis of the roll. It is preferable.
- precision measuring device between the gyro sensor and the level sensor provided in accordance with an embodiment of the present invention.
- FIG. 1 is a perspective view of a precision measuring device according to an embodiment of the present invention
- Figure 2 is a perspective view showing a seating portion of the precision measuring device according to an embodiment of the present invention
- Figure 3 is an embodiment of the present invention Is a block diagram of a precision measuring device according to the present invention.
- Precision measuring device is a housing 100 having a display unit 110 on one side, with a gyro sensor 210, the first level sensor 220 and the second level sensor 230
- the sensor unit 220 and the control unit 300 converts the value sensed by the sensor unit 200 into the display unit 110. 120) is formed.
- the housing 100 has a sensor unit 200 installed therein and a seating unit 120 disposed on a bottom thereof, whereby the seating unit 120 may be formed and the sensor unit 200 may be disposed.
- the housing 100 according to the present embodiment may be formed in any shape in which one side is formed in a rectangular parallelepiped shape longer than the other side as shown in FIG. 1.
- the display unit 110 to display the direction and the inclination of the roll to be measured is formed on the upper side of the housing 100, the inside of the housing 100, as described above, the gyro sensor 210 and the first level sensor (
- the sensor unit 200 including the 220 and the second level sensor 230, and the controller 300 connected to the sensor unit 200 and the display unit 110 are disposed.
- the gyro sensor 210 is a sensor that detects each speed, and senses the degree of inclination around the rotation axis using the force of Coriolis. Both the mechanical sensor and the electronic sensor may be used as the gyro sensor 210, but in the present embodiment, the electronic gyro sensor 210 is adopted to minimize the size of the precision measuring device.
- the level sensor is a conventional level of the liquid level and the electronic liquid level bubble as shown in Figure 1 in this embodiment of the first level sensor 220 to measure the inclination of the longitudinal direction of the housing 100 and the stage of the housing It consists of a second level sensor 230 for measuring the inclination of the direction.
- the long direction and the short direction of the housing 100 may be formed at various angles. However, in the case of the housing 100 according to the present embodiment, since the rectangular shape is formed as a rectangular rectangular parallelepiped as described above, the long direction and the short direction are formed to be perpendicular to each other. do.
- a control unit 300 is disposed between the sensor unit 200 and the display unit 110 to convert the value sensed by the sensor unit 200 to be displayed on the display unit 110, as shown in FIG. 3.
- a bottom portion of the 100 is formed with a seating portion 120 formed in parallel with the rotation axis of the roll and in contact with the outer surface of the roll.
- the gyro sensor 210 of the present embodiment has a function of detecting a direction indicating a direction about a reference point in addition to the measurement of the equilibrium, which is a function of a general gyro sensor, so that the outer surface of the roll is brought into contact with the seating part 120. It is desirable to be able to indicate the direction of the rotation axis.
- the controller 300 may store the inclination value of the roll measured by the first level sensor 220 and the second level sensor 230 and the direction value of the rotation axis of the roll measured by the gyro sensor 210. It is desirable to.
- the control unit 300 determines the measured inclination value and the rotation axis of the roll. It is desirable to have a memory installed to store the orientation value.
- the seating unit 120 is seated on the outer surface of the roll as shown in Figs. 1 and 2 and the seating unit upper line 121 formed in the center of the housing 100, the seating unit upper line ( 121 is composed of a pair of roll contact surface 122 formed with an inclination in the direction of the both sides of the bottom surface of the housing 100.
- the roll contact surface 122 may be formed in various shapes such as an arc shape and a planar shape. However, when the roll contact surface 122 is formed in an arc shape, the roll contact surface 122 may be firmly seated only on a roll having a diameter corresponding to the arc shape, as illustrated in FIGS. 1 and 2. As described above, the roll contact surface 122 is preferably formed in a planar shape. Therefore, the seating part 120 including the seating top line 121 and the roll contact surface 122 is formed in a ' ⁇ ' shape in cross section. .
- the pressure sensor 123 may be disposed to detect the position of the roll in contact with the seating part 120.
- the pressure detection sensor 123 may detect which position of the roll contact surface 122 is in contact with the roll contact surface 122. If the position of the roll detected by 123 is not symmetrical with respect to the seating upper line 121, the display 110 displays a mark such as 'the roll is not positioned at the correct position' of the roll alignment device. Make sure you get the correct placement.
- the pressure sensor 123 is preferably spaced apart along the roll contact surface 122, as shown in Figure 2, preferably a plurality of pressure sensor 123 is dense so that the position to measure accurately It is more preferable that the arrangement.
- At least two insertion grooves 130 are formed on the bottom surface of the housing 100 of the precision measuring device according to the present embodiment, and the bottom surface of the housing 100 according to another embodiment of the present invention.
- FIGS. 4A to 4C which are perspective views of the auxiliary jig, an auxiliary seating portion 410 is formed on the bottom thereof to correspond to the diameter of the roll, and an insertion protrusion 420 is inserted into the insertion groove 130 on the upper surface thereof. It is preferable that the auxiliary jig 400 is detachably disposed.
- the auxiliary jig 400 is an auxiliary device for using the roll alignment device even when the diameter of the roll seated on the seating part 120 is large or small.
- the auxiliary jig 400 has an arc shape or a cross section depending on the diameter of the roll to be measured by the roll alignment device.
- the auxiliary roll contact surface 411 may be formed in a ' ⁇ ' shape, and a pressure sensing sensor (not shown) may be disposed on the auxiliary roll contact surface 411, such as the roll contact surface 122 of the seating part 120. Can be.
- the pressure sensor disposed on the auxiliary roll contact surface 411 is the control unit 300 through the connectors 131, 421 formed in the insertion protrusion 420 and the insertion groove 130, as shown in Figs. It is preferable to measure the position of the roll in contact with the auxiliary roll contact surface 411.
- Roll alignment measurement method (hereinafter referred to as "roll alignment measurement method") using a precision measuring device of an embodiment of the present invention is a plurality of roll alignment measurement method as shown in Figure 5 according to an embodiment of the present invention S1 step of measuring the rotation axis direction of one of the rolls, S2 step of measuring the rotation axis direction of the other roll of the plurality of rolls, and the rotation axis direction of one roll measured in step S1 and the other rolls measured in step S2
- the step S3 is performed to generate an event in the display 110. .
- Step S1 is a reference roll rotation axis direction measurement step to set the reference roll to adjust the parallel and horizontal between the rolls, and by placing a precision measuring device on the reference roll to measure the direction value of the rotation axis of the reference roll.
- a precision measuring device is placed on the reference roll and the roll adjacent to the reference roll to measure the direction value, and until the direction value of the reference roll matches the direction value of the adjacent roll, Adjust the axis of rotation.
- the roll alignment device displays an event that the direction of the roll does not match on the display device when the direction value of the roll adjacent to the reference roll does not match to induce parallelism between the adjacent roll and the reference roll.
- step S1 the position of the reference roll detected by the pressure sensor 123 is symmetric with respect to the seating upper line 121. If not, further comprising the step S1a for generating an event in the display 110, in step S2 the position of the roll adjacent to the reference roll detected by the pressure sensor 123 is based on the seating upper line 121 If it is not symmetrical may further include the step S2a for generating an event in the display 110.
- the precision measuring device When the precision measuring device according to an embodiment of the present invention is not installed to coincide with the rotation axis of the roll, it is not easy to adjust the direction of the rolls to match the directions of the rolls, so that the precise measuring device is placed on the rolls very much. It is important.
- the step S1 when the inclination between the rolls is matched, the step S1 further includes a step S1b for measuring the inclination of the reference roll, and the step S2 measures the inclination of the roll adjacent to the reference roll.
- the display unit 110 indicates that the inclination does not match. It may further include a step S3b to generate.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Un mode de réalisation de la présente invention porte sur un dispositif pour mesurer avec précision le degré de parallélisme et d'horizontalité entre des rouleaux, lequel dispositif comporte un capteur gyroscopique et des capteurs de niveau, et comprend : un boîtier qui comporte une partie d'affichage sur un côté ; une unité de capteur qui est disposée dans le boîtier et qui comporte un capteur gyroscopique pour mesurer le degré de parallélisme entre une pluralité de rouleaux, un premier capteur de niveau pour mesurer une inclinaison de rouleau par rapport à l'horizontale, et un second capteur de niveau pour mesurer une inclinaison de rouleau dans l'orientation d'inclinaison de rouleau orthogonale à l'orientation d'inclinaison mesurée par le premier capteur de niveau ; et une unité de commande qui est reliée à l'unité de capteur et à l'unité d'affichage et qui convertit des valeurs détectées par l'unité de capteur et qui affiche les résultats sur l'unité d'affichage, et, de préférence, la surface inférieure du boîtier comportant une partie de logement qui vient en contact avec la surface externe du rouleau, en parallèle avec l'axe de rotation du rouleau. Le dispositif pour mesurer avec précision le degré de parallélisme et d'horizontalité entre des rouleaux comportant un capteur gyroscopique et un capteur de niveau et le procédé de mesure d'alignement de rouleaux selon la présente invention ont pour effet avantageux de rendre possible de faire correspondre une inclinaison et un parallélisme entre des rouleaux relativement rapidement par la mesure simultanée de l'orientation et de l'inclinaison des axes de rotation de rouleaux à l'aide d'un capteur gyroscopique et d'une paire de capteurs de niveau.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100122145A KR101024286B1 (ko) | 2010-12-02 | 2010-12-02 | 자이로 센서와 수준센서가 구비된 롤 간 평행 및 수평도 정밀 측정장치 및 이를 이용한 롤 얼라이먼트 측정방법 |
| KR10-2010-0122145 | 2010-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012074225A1 true WO2012074225A1 (fr) | 2012-06-07 |
Family
ID=43939298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2011/008636 Ceased WO2012074225A1 (fr) | 2010-12-02 | 2011-11-11 | Dispositif pour mesurer avec précision le degré de parallélisme et d'horizontalité entre des rouleaux comportant un capteur gyroscopique et des capteurs de niveau, et procédé de mesure d'alignement de rouleaux l'utilisant |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101024286B1 (fr) |
| WO (1) | WO2012074225A1 (fr) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD723954S1 (en) | 2013-09-16 | 2015-03-10 | Empire Level Mfg. Corp. | Angular indicator tool |
| CN105318811A (zh) * | 2015-09-26 | 2016-02-10 | 中煤张家口煤矿机械有限责任公司 | 内外圆锥面锥度测量装置 |
| US9347774B2 (en) | 2013-09-16 | 2016-05-24 | Milwaukee Electric Tool Corporation | Angular indicator tool |
| CN106840081A (zh) * | 2017-03-28 | 2017-06-13 | 苏州精创光学仪器有限公司 | 电子设备脚垫检测仪 |
| CN111351464A (zh) * | 2018-12-20 | 2020-06-30 | 鸿富锦精密电子(郑州)有限公司 | 平整度检测装置及方法 |
| CN112815920A (zh) * | 2020-12-29 | 2021-05-18 | 北京中外建工程管理有限公司 | 一种超高层建筑工程测量的监理用水平测量装置 |
| CN112964158A (zh) * | 2021-02-09 | 2021-06-15 | 中国航发哈尔滨东安发动机有限公司 | 一种旋转吸油机构平行测量工具及测量方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015135552A1 (fr) * | 2014-03-14 | 2015-09-17 | Windar Photonics A/S | Outil d'alignement de lidar permettant d'aligner un système lidar avec un axe de rotation d'un rotor d'une turbine éolienne |
| KR101628955B1 (ko) * | 2015-08-26 | 2016-06-09 | (주)피씨엠솔루션 | 롤 자세정보검출장치 및 그 측정방법 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09126705A (ja) * | 1995-10-31 | 1997-05-16 | Kawasaki Steel Corp | ロールラインのロール平行度測定装置 |
| JPH10160432A (ja) * | 1996-11-29 | 1998-06-19 | Nippon Steel Corp | ロ−ル平行度測定方法および装置 |
| JPH10160433A (ja) * | 1996-11-29 | 1998-06-19 | Nippon Steel Corp | ロ−ル平行度測定方法およびその装置 |
| JPH11173843A (ja) * | 1997-12-08 | 1999-07-02 | Ebisu:Kk | 水準器 |
-
2010
- 2010-12-02 KR KR1020100122145A patent/KR101024286B1/ko active Active
-
2011
- 2011-11-11 WO PCT/KR2011/008636 patent/WO2012074225A1/fr not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09126705A (ja) * | 1995-10-31 | 1997-05-16 | Kawasaki Steel Corp | ロールラインのロール平行度測定装置 |
| JPH10160432A (ja) * | 1996-11-29 | 1998-06-19 | Nippon Steel Corp | ロ−ル平行度測定方法および装置 |
| JPH10160433A (ja) * | 1996-11-29 | 1998-06-19 | Nippon Steel Corp | ロ−ル平行度測定方法およびその装置 |
| JPH11173843A (ja) * | 1997-12-08 | 1999-07-02 | Ebisu:Kk | 水準器 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD723954S1 (en) | 2013-09-16 | 2015-03-10 | Empire Level Mfg. Corp. | Angular indicator tool |
| US9347774B2 (en) | 2013-09-16 | 2016-05-24 | Milwaukee Electric Tool Corporation | Angular indicator tool |
| CN105318811A (zh) * | 2015-09-26 | 2016-02-10 | 中煤张家口煤矿机械有限责任公司 | 内外圆锥面锥度测量装置 |
| CN106840081A (zh) * | 2017-03-28 | 2017-06-13 | 苏州精创光学仪器有限公司 | 电子设备脚垫检测仪 |
| CN111351464A (zh) * | 2018-12-20 | 2020-06-30 | 鸿富锦精密电子(郑州)有限公司 | 平整度检测装置及方法 |
| CN112815920A (zh) * | 2020-12-29 | 2021-05-18 | 北京中外建工程管理有限公司 | 一种超高层建筑工程测量的监理用水平测量装置 |
| CN112815920B (zh) * | 2020-12-29 | 2022-04-12 | 北京中外建工程管理有限公司 | 一种超高层建筑工程测量的监理用水平测量装置 |
| CN112964158A (zh) * | 2021-02-09 | 2021-06-15 | 中国航发哈尔滨东安发动机有限公司 | 一种旋转吸油机构平行测量工具及测量方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101024286B1 (ko) | 2011-03-29 |
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