CN110455227A - Four through axial bore coaxiality error detection method of telescope - Google Patents

Four through axial bore coaxiality error detection method of telescope Download PDF

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Publication number
CN110455227A
CN110455227A CN201910874495.3A CN201910874495A CN110455227A CN 110455227 A CN110455227 A CN 110455227A CN 201910874495 A CN201910874495 A CN 201910874495A CN 110455227 A CN110455227 A CN 110455227A
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CN
China
Prior art keywords
axis hole
way
laser tracker
target ball
axial bore
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Pending
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CN201910874495.3A
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Chinese (zh)
Inventor
王志臣
王建立
周超
曹玉岩
王文攀
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Changchun Institute of Optics Fine Mechanics and Physics of CAS
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Changchun Institute of Optics Fine Mechanics and Physics of CAS
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Priority to CN201910874495.3A priority Critical patent/CN110455227A/en
Publication of CN110455227A publication Critical patent/CN110455227A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/26Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

The present invention is four through axial bore coaxiality error detection method of telescope, is related to the technical field of the optical detection of optoelectronic device processing, solves the technical issues of four through axial bore coaxiality error of large scale lacks detection method.Technical characteristic includes setting up laser tracker in the side of four through axial bore, laser tracker measures the end face of four through axial bore, and laser tracker is fitted the center of circle of four-way side axis hole, and establishes coordinate, laser tracker is fitted the center of circle of four-way other side axis hole in new coordinate system, obtains testing result.With the detection that can be applied to four through axial bore coaxiality error of small-medium size simultaneously, detection process is completed on machining tool, is not required to carrying and secondary clamping, the correct error of secondary clamping is avoided, production efficiency is improved, reduces testing cost, operating method is simple, is suitable for the effect promoted.

Description

Four through axial bore coaxiality error detection method of telescope
Technical field
The present invention relates to the technical field of the optical detection of optoelectronic device processing, in particular to four through axial bore of telescope is coaxial Spend error detection method.
Background technique
The four-way of telescope is the carrier of optical observation system, and two sides are connect by axis with bearing, realizes telescope pitching Rotary motion, the coaxiality error of four through axial bore is a main error item of rotary motion, and error size directly affects Running accuracy, and then influence the point and track towards precision of telescope is such as schemed when four-way both ends axis hole is there are when malalignment error Shown in 1, causes the left axle 1 being connected with four through axial bore and right axle 3 there is also malalignment error d, will seriously affect the rotation of four-way Turn precision, and then brings error to telescope direction.
Three-coordinates measuring machine detection can be used in four through axial bore coaxiality error lesser for size, and four-way is placed in three On the workbench of coordinate measuring apparatus, the gauge head of three-coordinates measuring machine measures several points on the axis hole on the left of four-way, is fitted shaft Line measures several points on the axis hole on right side, fits the axis of right side pivot holes, and the offset of two axis is four through axial bore Coaxiality error.Four-way need to be carried on the workbench of three-coordinates measuring machine by the method, particularly with larger-size four-way, Trouble is carried, and needs large-scale three-coordinates measuring machine, it is at high cost, it is not suitable for promoting.
Summary of the invention
The technical issues of lacking detection method the invention solves four through axial bore coaxiality error of large scale, provide telescope Four through axial bore coaxiality error detection methods.
In order to solve the above-mentioned technical problem, technical solution of the present invention is specific as follows:
Four through axial bore coaxiality error detection method of telescope, the detection method specifically comprise the following steps:
The first step, the four-way of completion of processing is placed on machining tool it is steady, four through axial bore directions side (such as Left side) laser tracker is set up, so that the laser of laser tracker is irradiated to the two sides axis hole of four-way and with laser tracker Earth coordinates are established for origin;
Target ball equipped with magnet base is adsorbed on four-way on the axis hole end face of laser tracker side, target by second step Ball is a reflector, is capable of the laser of former road reflection laser tracker injection, mobile target ball, and laser tracker can measure target The spatial position coordinate of ball, the mobile multiple positions of laser tracker measurement target ball layout and fit four-way close to sharp The plane of the axis hole end face of optical tracker system side;
Target ball is adsorbed on positioning seat front, magnet steel and two positioning columns is fixedly installed on positioning seat, pacifies by third step Positioning seat equipped with magnet steel is adsorbed on four-way on the axis hole end face of laser tracker side and by the circumference of two positioning columns Side is bonded with the axis hole of four-way, guarantees target ball and four-way close to the axis hole distance of center circle of laser tracker side using two positioning columns From unique, under the premise of guaranteeing that the circumference of two positioning columns is bonded with the axis hole of four-way, positioning seat is fitted in axis hole end face Several positions of upper movement, make target ball uniformly move several points in axis hole, and laser tracker measures the position of target ball respectively Coordinate fits the axis hole center of circle of the four-way close to laser tracker side;
4th step, the plane with the four-way that is fitted in second step close to the axis hole end face of laser tracker side are flat for x-y Face, the four-way being fitted in third step are origin close to the axis hole center of circle of laser tracker side, and taking horizontal is the direction x, are established new Measurement coordinate system;
Positioning seat is adsorbed on axis hole end face of the four-way far from laser tracker side by the 5th step, and target ball is adsorbed on positioning The reverse side of seat, enables laser tracker to be irradiated to target ball, guarantees that target ball and four-way are separate using two positioning columns of positioning seat The axis hole circle center distance of laser tracker side is unique, the same running fix seat and keeps target ball uniformly distributed in axis hole with third step Mobile several points, laser tracker measure the position coordinates of target ball respectively, fit four-way far from laser tracker side The axis hole center of circle;
6th step, in the new measurement coordinate system that the 4th step is established, the four-way fitted is far from laser tracker side The coordinate value in the axis hole center of circle be four-way two sides axis hole malalignment error.
Preferably, in second step, target ball uniformly moves at 1 points in axis hole end face.
Preferably, in third step and the 5th step, positioning seat drives target ball uniformly to move in axis hole at 1 points.
Preferably, the diameter of two positioning columns is equal and tow sides perpendicular to positioning seat.
Preferably, laser tracker and control system are electrically connected.
The present invention has the following beneficial effects:
Four through axial bore coaxiality error detection method of telescope of the invention solves four through axial bore concentricity of large scale mistake Difference lacks the technical issues of detection method, while can be applied to the detection of four through axial bore coaxiality error of small-medium size, detects Journey is completed on machining tool, is not required to carrying and secondary clamping, avoids the correct error of secondary clamping, improves production efficiency, drop Low testing cost, operating method is simple, is suitable for promoting.
Detailed description of the invention
Invention is further described in detail with reference to the accompanying drawings and detailed description.
Fig. 1 is four through axial bore malalignment errors pair of four through axial bore coaxiality error detection method of telescope of the invention The schematic diagram of the influence principle of four-way running accuracy;
Fig. 2 is the four-way method for measuring coaxiality process of four through axial bore coaxiality error detection method of telescope of the invention Figure;
Fig. 3 is the laser tracker instrumentation plan of four through axial bore coaxiality error detection method of telescope of the invention;
Fig. 4 is that the target ball of four through axial bore coaxiality error detection method of telescope of the invention and positioning seat place signal Figure;
Fig. 5 is the positioning seat positioning principle schematic diagram of four through axial bore coaxiality error detection method of telescope of the invention.
Appended drawing reference in figure indicates are as follows:
1, left axle;2, four-way;3, right axle;4, laser tracker;5, target ball;6, positioning seat;7, positioning column.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-5, four through axial bore coaxiality error detection method of telescope, comprising:
The four-way 2 of completion of processing is placed steady, the side (example in 2 axis hole direction of four-way by the first step on machining tool Such as left side) laser tracker 4 is set up, so that the laser of laser tracker 4 is irradiated to the two sides axis hole of four-way 2 and with laser Tracker 4 is that origin establishes earth coordinates;
Target ball 5 equipped with magnet base is adsorbed on four-way 2 on the axis hole end face of 4 side of laser tracker by second step, Target ball 5 is a reflector, is capable of the laser of 4 injection of former road reflection laser tracker, mobile target ball 5, laser tracker 4 can The spatial position coordinate of target ball 5 is measured, laser tracker 4 measures layouting and fitting four for the mobile multiple positions of target ball 5 Lead to 2 planes close to the axis hole end face of 4 side of laser tracker;
Target ball 5 is adsorbed on 6 front of positioning seat by third step, and magnet steel and two positioning columns are fixedly installed on positioning seat 6 7, the positioning seat 6 for being equipped with magnet steel is adsorbed on four-way 2 on the axis hole end face of 4 side of laser tracker and positions two The circumference of column 7 is bonded with the axis hole of four-way 2, guarantees target ball 5 and four-way 2 close to laser tracker one using two positioning columns 7 The axis hole circle center distance of side is unique, under the premise of guaranteeing that the circumference of two positioning columns 7 is bonded with the axis hole of four-way 2, positioning Seat 6 is fitted on axis hole end face several mobile positions, distinguishes target ball 5 uniformly distributed several points, laser tracker 4 in axis hole The position coordinates for measuring target ball 5, fit four-way 2 close to the axis hole center of circle of 4 side of laser tracker;
4th step, with the four-way 2 that is fitted in second step close to the axis hole end face of 4 side of laser tracker plane for x-y Plane, the four-way 2 being fitted in third step are origin close to the axis hole center of circle of 4 side of laser tracker, and taking horizontal is the direction x, are built Found new measurement coordinate system;
Positioning seat 6 is adsorbed on axis hole end face of the four-way 2 far from 4 side of laser tracker by the 5th step, and target ball 5 is adsorbed on The reverse side of positioning seat 6 enables laser tracker 4 to be irradiated to target ball 5, guarantees target ball 5 using two positioning columns 7 of positioning seat 6 Axis hole circle center distance with four-way 2 far from 4 side of laser tracker is unique, the same running fix seat 6 and makes target ball with third step 5 are evenly distributed with several points in axis hole, and laser tracker 4 measures the position coordinates of target ball 5 respectively, fits four-way 2 far from laser The axis hole center of circle of 4 side of tracker;
6th step, in the new measurement coordinate system that the 4th step is established, the four-way 2 fitted is far from laser tracker 4 one The coordinate value in the axis hole center of circle of side is the error of 2 two sides axis hole malalignment of four-way.
Working principle: as long as its laser of the placement position of laser tracker 4 in the first step can be irradiated to the two of four-way 2 Side axle hole facilitates operation as shown in figure 3, it is not high to put required precision to the position of laser tracker 4, improves work effect Rate.In entire measurement process, the position of laser tracker 4 immobilizes, and is that origin establishes preliminary sit with laser tracker 4 Mark system, i.e. earth coordinates;Second step, target ball 5 are furnished with magnet base, can be convenient testing staff and take at any time target ball 5, and will Target ball 5 is adsorbed onto four-way 2 on the axis hole end face of 4 side of laser tracker at any time, meanwhile, the thickness of magnet base is constant, often It is secondary when target ball 5 is adsorbed on axis hole end face, it is ensured that target ball 5 is unique at a distance from axis hole end face, ensures that in this way The coordinate that laser tracker 4 measures the spatial position of target ball 5 is a true value, that is, passes through the measurement target of laser tracker 4 Each point value of ball 5, the coordinate value fitted can guarantee that numerical value is accurate with the flatness of actual response shaft hole end surface;Third Step, target ball 5 is adsorbed on 6 front of positioning seat, and 6 front of positioning seat is comparatively, to be ensuring that target ball 5 opposite can swash Optical tracker system 4 allows laser tracker 4 to be irradiated to target ball 5, in the axis hole for the circumference and four-way 2 for guaranteeing two positioning columns 7 Under the premise of fitting, positioning seat 6 is fitted on axis hole end face several mobile positions, can guarantee each of positioning seat 6 in this way Mobile, axis hole circle center distance of the target ball 5 with four-way 2 close to laser tracker side is unique, guarantees the accuracy of measurement result, makes The uniformly distributed several points in axis hole of target ball 5, positioning seat 6 move every time it is closely located can and around axis hole one week, make target ball 5 are uniformly distributed several points in axis hole, and laser tracker 4 measures the position coordinates of target ball 5 respectively, fit four-way 2 close to sharp The axis hole center of circle of 4 side of optical tracker system, then by the new center of circle and the end face newly measured as new coordinate system;5th step, Under the premise of 4 position of laser tracker immobilizes, positioning seat 6 is adsorbed on axis of the four-way 2 far from 4 side of laser tracker Hole end surface, target ball 5 are adsorbed on the reverse side of positioning seat 6, and laser tracker 4 is enable to be irradiated to target ball 5, repeat the step of third step Suddenly, the axis hole center of circle of the four-way 2 far from 4 side of laser tracker is fitted;6th step, the four-way 2 fitted are tracked far from laser The coordinate value in the axis hole center of circle of 4 side of instrument is compared with coordinate system new before, two holes of you can get it four-way 2 it is not coaxial Degree.It solves the technical issues of four through axial bore coaxiality error of large scale lacks detection method, while can be applied to small-medium size The detection of four through axial bore coaxiality errors, detection process are completed on machining tool, are not required to carrying and secondary clamping, are avoided secondary The correct error of clamping improves production efficiency, reduces testing cost, and operating method is simple, is suitable for promoting.
In second step, target ball 5 uniformly moves at 1 points in axis hole end face.
Working principle: it is understood that in order to measure than more actually data, target ball 5 needs to move several positions, And then shaft outlet hole end face could be fitted than more actually data, from the point of view of practical work experience, target ball 5 is mobile in axis hole end face Point at least six, and require it is basic be uniformly distributed, in this way could be than more actually reflecting the true feelings of axis hole end face Condition;If relatively large four-way 2, target ball 5 is uniformly distributed mobile point in axis hole end face and wants more, to measure shaft outlet hole end The true value in face.
In third step and the 5th step, positioning seat 6 drives target ball 5 uniformly to move in axis hole at 1 points.+
Working principle: it is understood that if the volume of four-way 2 is larger, axis hole is larger, if target ball 5 is in axis hole Uniformly perhaps three points or five points, the precision that the center of circle come is fitted according to these points are shown mobile only two points So inaccurate, target ball 5 uniformly moves at 1 points in axis hole, and fitting the center of circle come in this way could be close to true value, target ball 5 Mobile point is more, fits the center of circle come just closer to true value, real work is also the uniform shifting for keeping target ball 5 more as far as possible It is dynamic, just measured value can be made accurate in this way.
The diameter of two positioning columns 7 is equal and tow sides perpendicular to positioning seat 6.
Working principle: because the axis hole of four-way 2 with the axis hole end face of four-way 2 be it is vertical, be adsorbed onto four-way in positioning seat 6 When 2 axis hole end face, it is ensured that two positioning columns 7 are bonded with shaft hole inner wall, ensure that target ball 5 and four-way 2 in this way Axis hole circle center distance close to laser tracker side is unique, and the diameter of two positioning columns 7 is equal, and also ensuring that will position When seat 6 mobile one encloses, several strings are formed, string ending connection can be engaged out the perfect center of circle, made Measurement result is truer, also testing staff is facilitated to operate.
Laser tracker 4 and control system are electrically connected.
Working principle: it is understood that laser tracker 4 all feeds back the point of all measurement results to control system In, and shown in the coordinate system in computer, it more intuitive can see the value of concentricity.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes still within the protection scope of the invention.

Claims (5)

1. a kind of four through axial bore coaxiality error detection method of telescope, which is characterized in that the detection method specifically includes as follows Step:
The four-way (2) of completion of processing is placed steady, the side frame in four-way (2) axis hole direction by the first step on machining tool If laser tracker (4), so that the laser of laser tracker (4) is irradiated to the two sides axis hole of four-way (2) and tracked with laser Instrument (4) is that origin establishes earth coordinates;
Target ball (5) equipped with magnet base is adsorbed on the axis hole end face of four-way (2) close to laser tracker (4) side by second step On, according to the mobile target ball (5) of certain distance, laser tracker (4) can measure the spatial position coordinate of target ball (5), swash It layouts and fits four-way (2) close to laser tracker (4) in the mobile multiple positions of optical tracker system (4) measurement target ball (5) The plane of the axis hole end face of side;
Target ball (5) is adsorbed on positioning seat (6) front by third step, and magnet steel and two positioning are fixedly installed on positioning seat (6) Column (7), the positioning seat (6) for being equipped with magnet steel are adsorbed on four-way (2) on the axis hole end face of laser tracker (4) and by two The circumference of a positioning column (7) is bonded with the axis hole of four-way (2), guarantees target ball (5) and four-way (2) using two positioning columns (7) Axis hole circle center distance close to laser tracker (4) side is unique, in circumference and four-way (2) for guaranteeing two positioning columns (7) Axis hole fitting under the premise of, positioning seat (6) is fitted on axis hole end face according to several mobile positions of certain distance, makes target ball (5) several points are uniformly moved in axis hole, laser tracker (4) measures the position coordinates of target ball (5) respectively, and then fits The axis hole center of circle of the four-way (2) close to laser tracker (4) side;
4th step, the plane with the axis hole end face of close laser tracker (4) side of the four-way (2) being fitted in second step are X-y plane, the four-way (2) being fitted in third step are origin close to the axis hole center of circle of laser tracker side, and taking horizontal is the side x To establishing new measurement coordinate system;
Positioning seat (6) is adsorbed on the axis hole end face of four-way (2) far from laser tracker (4) side by the 5th step, and target ball (5) is inhaled It is attached to the reverse side of positioning seat (6), makes laser tracker (4) that target ball (5) can be irradiated to, utilizes two positioning of positioning seat (6) Column (7) guarantees that the axis hole circle center distance of target ball (5) with four-way (2) far from laser tracker (4) side is unique, the same with third step Running fix seat (6) simultaneously makes target ball (5) uniformly move several points in axis hole, and laser tracker (4) measures target ball respectively (5) position coordinates, and then fit the axis hole center of circle of four-way (2) far from laser tracker (4) side;
6th step, in the new measurement coordinate system that the 4th step is established, the four-way (2) fitted is far from laser tracker (4) one The coordinate value in the axis hole center of circle of side is four-way two sides axis hole malalignment error.
2. four through axial bore coaxiality error detection method of telescope as described in claim 1, which is characterized in that in second step In, target ball (5) uniformly moves at 1 points in axis hole end face.
3. four through axial bore coaxiality error detection method of telescope as claimed in claim 2, it is characterised in that: in third step and In 5th step, positioning seat (6) drives target ball (5) uniformly to move in axis hole at 1 points.
4. four through axial bore coaxiality error detection method of telescope as described in claim 1, which is characterized in that two positioning columns (7) diameter is equal and tow sides perpendicular to positioning seat (6).
5. four through axial bore coaxiality error detection method of telescope as described in claim 1, which is characterized in that laser tracker (4) it is electrically connected with external control system.
CN201910874495.3A 2019-09-17 2019-09-17 Four through axial bore coaxiality error detection method of telescope Pending CN110455227A (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN111220097A (en) * 2020-01-17 2020-06-02 中国科学院长春光学精密机械与物理研究所 Optical detection device and optical detection method for coaxiality machining error of shaft hole
CN111678463A (en) * 2020-06-05 2020-09-18 昆山市建设工程质量检测中心 Method for detecting offset of dowel bars at lower end of steel bar joint of grouting sleeve
CN113252313A (en) * 2021-05-13 2021-08-13 九江精密测试技术研究所 Device for detecting coaxiality error of laser axis and telescope collimation axis
CN114132452A (en) * 2021-12-23 2022-03-04 武昌船舶重工集团有限公司 Coaxial positioning method for hull bearing
CN114562962A (en) * 2022-02-28 2022-05-31 首钢京唐钢铁联合有限责任公司 Equipment coaxiality measuring method based on laser tracker

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111220097A (en) * 2020-01-17 2020-06-02 中国科学院长春光学精密机械与物理研究所 Optical detection device and optical detection method for coaxiality machining error of shaft hole
CN111678463A (en) * 2020-06-05 2020-09-18 昆山市建设工程质量检测中心 Method for detecting offset of dowel bars at lower end of steel bar joint of grouting sleeve
CN113252313A (en) * 2021-05-13 2021-08-13 九江精密测试技术研究所 Device for detecting coaxiality error of laser axis and telescope collimation axis
CN113252313B (en) * 2021-05-13 2024-05-14 九江精密测试技术研究所 Device for detecting coaxiality errors of laser axis and telescope collimation axis
CN114132452A (en) * 2021-12-23 2022-03-04 武昌船舶重工集团有限公司 Coaxial positioning method for hull bearing
CN114562962A (en) * 2022-02-28 2022-05-31 首钢京唐钢铁联合有限责任公司 Equipment coaxiality measuring method based on laser tracker
CN114562962B (en) * 2022-02-28 2024-06-07 首钢京唐钢铁联合有限责任公司 Equipment coaxiality measuring method based on laser tracker

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