CN110174052A - A kind of Hooke's hinge method for testing precision - Google Patents
A kind of Hooke's hinge method for testing precision Download PDFInfo
- Publication number
- CN110174052A CN110174052A CN201910462806.5A CN201910462806A CN110174052A CN 110174052 A CN110174052 A CN 110174052A CN 201910462806 A CN201910462806 A CN 201910462806A CN 110174052 A CN110174052 A CN 110174052A
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- China
- Prior art keywords
- hooke
- hinge
- target ball
- transiting rod
- centre coordinate
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/023—Power-transmitting endless elements, e.g. belts or chains
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
A kind of method for testing precision of Hooke's hinge carries out support fixation after adjusting transiting rod to a certain azimuth by adjusting support；Target ball sphere centre coordinate is measured with laser tracker and is recorded；Calculate the number of the sphere centre coordinate of the target ball positioned at different orientations of measurement, and judge to measure whether number is more than or equal to preset value, if not, then repeat azimuthal adjusting of transiting rod and the test of target ball sphere centre coordinate, if so, the sphere centre coordinate of the target ball positioned at different orientations of acquisition is fitted to a spherical surface and is recorded；Each sphere centre coordinate of the target ball of measurement is calculated at a distance from the spherical surface fitted, the standard deviation sigma of each distance is calculated, uses ± 3 σ as the precision index of evaluation Hooke's hinge.Laser tracker testing efficiency of the present invention is high, and one-shot measurement can complete the acquisition of the sphere center position data of target ball, not only increase testing efficiency, and sphere center position does not need to be fitted, and can improve measuring accuracy to avoid error of fitting.
Description
Technical field
The present invention relates to precision equipment technical field more particularly to a kind of method for testing precision of Hooke's hinge.
Background technique
Hooke's hinge obtains in various forms of parallel institutions as a kind of linkage for being capable of providing two freedom degrees
A large amount of application.Important component of the Hooke's hinge as parallel institution, mass motion precision of the precision to parallel institution
There is large effect, and the gap of Hooke's hinge is difficult to be corrected and compensate in the Kinematic Calibration of parallel institution.In order to
Foundation is provided to the Hooke's hinge type selecting of parallel institution, needs a kind of test method of accuracy of manufacture that can evaluate Hooke's hinge.Mesh
Preceding disclosed Hooke's hinge method for testing precision is less, and number of patent application discloses a kind of Hooke's hinge precision for 121510354792.7
Test method, the three-coordinates measuring machine which uses is expensive, not portable, and obtains in such a way that contact is got ready
Data can adulterate the distracter as caused by juxtaposition metamorphose, certain influence is generated to final measuring accuracy.In addition, the invention
In patent the acquisition of sphere centre coordinate be fitted indirectly by multiple points on standard ball spherical surface come, the method not only efficiency compared with
It is low, and there are errors of fitting, further influence measuring accuracy.
Summary of the invention
In consideration of it, in order to overcome the drawbacks of the prior art and problem, it is necessary to provide a kind of high efficiency and high-precision tiger
Gram hinge method for testing precision.
A kind of method for testing precision of Hooke's hinge, comprising the following steps:
The lower U-shaped frame of Hooke's hinge is set on test platform by step 1；
Transiting rod is fixedly connected by step 2 with the upper U-shaped frame of the Hooke's hinge；
Target ball is set on the transiting rod by step 3；
Step 4 sets up laser tracker, so that the scope of activities of the Hooke's hinge is located at the survey of the laser tracker
It tries in range；
Step 5 carries out support fixation, the mistake after adjusting the transiting rod to a certain azimuth by adjusting support
The tilt angle for crossing bar is adjustable by the adjusting support；
Step 6 measures the sphere centre coordinate and record of the target ball with the laser tracker, completes one-shot measurement；
Step 7, calculates the number of the sphere centre coordinate of the target ball positioned at different orientations of measurement, and judges to measure
Whether number is more than or equal to preset value, if it is not, then repeating step 5 to step 6, if so, carrying out step 8；
The sphere centre coordinate of the target ball positioned at different orientations of acquisition is fitted to a spherical surface and remembered by step 8
Record；
Step 9 calculates each sphere centre coordinate of the target ball of measurement at a distance from the spherical surface fitted,
The standard deviation sigma for calculating each distance uses ± 3 σ as the precision index for evaluating the Hooke's hinge.
In one embodiment, the preset value is 10.
In one embodiment, azimuthal selection of the transiting rod meets the target ball and is evenly distributed on the Hooke
On the upper half spherical surface of hinge.
In one embodiment, the adjusting support includes magnetic stand and adjustment support frame, and the magnetic stand is set to
On the test platform, one end of the adjustment support frame and the magnetic stand are threadedly coupled, and the one of the adjustment support frame
End is used to support the transiting rod.
In one embodiment, the adjustment support frame is equipped with U-shaped opening, the mistake far from one end of the magnetic stand
Bar is crossed in the U-shaped opening.
In one embodiment, the lower U-shaped frame of the Hooke's hinge is set on test platform by test fixture, the magnetic force
Gauge stand is set on the test fixture.
In one embodiment, the laser tracker is set on the test platform by tripot, described three
Foot prop it is height-adjustable.
In one embodiment, in step 3, by target ball magnetic-adsorption on the transiting rod.
In one embodiment, in step 3, the transiting rod includes the body of rod and target ball seat, one end of the body of rod and institute
The upper U-shaped frame for stating Hooke's hinge is fixedly connected, the target ball seat by magnetic-adsorption the body of rod far from the upper U-shaped frame one
End, the target ball is by magnetic-adsorption on the target ball seat.
Above-mentioned Hooke's hinge method for testing precision uses the principle of non-contact measurement, can avoid target ball sphere center position because of contact
Power bring slight deformation or rigid body displacement, measuring accuracy increase；In addition, laser tracker testing efficiency is high, once
Measurement can complete the acquisition of the sphere center position data of target ball, not only greatly simplify test process, improve testing efficiency, and
And sphere center position does not need to be fitted, and can further improve measuring accuracy to avoid error of fitting is generated.
Detailed description of the invention
Fig. 1 is the schematic diagram of the Hooke's hinge accuracy test mechanism of an embodiment；
Fig. 2 is the partial schematic diagram of Hooke's hinge accuracy test shown in FIG. 1 mechanism；
Fig. 3 is the flow chart of the Hooke's hinge accuracy test of an embodiment.
Specific embodiment
In order to be more clear the objectives, technical solutions, and advantages of the present invention, with reference to the accompanying drawings and embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.It is described in the present invention to be fixedly connected, including be directly fixedly connected and fix indirectly.
Please refer to Fig. 1, Fig. 2 and Fig. 3, the method for testing precision of the Hooke's hinge of an embodiment, comprising the following steps:
The lower U-shaped frame 3 of Hooke's hinge is set on test platform 1 by S1.
In one embodiment, the lower U-shaped frame 3 of Hooke's hinge is set on test platform 1 by test fixture 2.Wherein, it tests
Tooling is used to be tested Hooke's hinge and magnetic stand and provide a more accurate mounting surface.Due to needing fixed magnetic power meter
Seat, it is ferromagnetic for needing the material of test fixture.
Transiting rod 12 is fixedly connected by S2 with the upper U-shaped frame 4 of Hooke's hinge.
In one embodiment, transiting rod 12 is fixedly connected with the upper U-shaped frame 4 of Hooke's hinge by screw.Pass through screw
It is fixedly connected, facilitates and mount and dismount transiting rod 12 and upper U-shaped frame 4.
Target ball 7 is set on transiting rod 12 by S3.
In one embodiment, by 7 magnetic-adsorption of target ball on transiting rod 12.
In one embodiment, transiting rod 12 includes the body of rod 5 and target ball seat 6, one end of the body of rod 5 and the upper U-shaped of Hooke's hinge
Frame 4 is fixedly connected, and by magnetic-adsorption in the one end of the body of rod 5 far from upper U-shaped frame 4, target ball 7 is existed target ball seat 6 by magnetic-adsorption
On target ball seat 6.
S4 sets up laser tracker 10, so that the scope of activities of Hooke's hinge is located in the test scope of laser tracker 10.
In one embodiment, laser tracker 10 is set up on test platform by tripod 11, tripod 11
It is height-adjustable.
S5 carries out support fixation after adjusting transiting rod 12 to a certain azimuth by adjusting support, and transiting rod 12 inclines
Rake angle is adjustable by adjusting support.
In one embodiment, azimuthal selection of transiting rod 12 meets the upper half that target ball 7 is evenly distributed on Hooke's hinge
On spherical surface.
In one embodiment, adjusting support includes magnetic stand 9 and adjustment support frame 8, and it is flat that magnetic stand 9 is set to test
On platform 1, the one end and magnetic stand 9 for adjusting support frame 8 are threadedly coupled, and one end of adjustment support frame 8 is used to support transiting rod 12.
Further, adjusting support further includes fixed bracket, and fixed bracket includes fixed link, regulating part and positioning screw,
Fixed link one end is fixed on magnetic stand 9.Regulating part is sheathed in fixed link.And the position of regulating part and fixed link is solid
It is fixed.The threaded hole perpendicular to fixed link is offered on regulating part, positioning screw is connected with regulating part by threaded hole, screw of transposing
One end with adjustment support frame 8 be fixedly connected.Further, positioning screw is equipped with rotation far from one end of adjustment support frame 8 and adjusts
Part is saved, rotation regulating part is fixedly connected with positioning screw.It rotates regulating part and is equipped with concavo-convex lines, regulating part will be rotated by facilitating
It is rotated.The positioning screw rotation of regulating part rotational movement is rotated to reach to adjust the angle of adjustment support frame 8
To azimuthal purpose of adjustment transiting rod 12.
In one embodiment, magnetic stand 9 is set on test fixture 2.
Further, adjustment support frame 8 is equipped with U-shaped opening far from one end of magnetic stand 9, and transiting rod 12 is set to U-shaped open
In mouthful.
S6 measures the sphere centre coordinate and record of target ball 7 with laser tracker 10, completes one-shot measurement.
S7, calculates the number of the sphere centre coordinate of the target ball 7 positioned at different orientations of measurement, and judges whether measure number
More than or equal to preset value, if it is not, then repeating step 5 to step 6, if so, carrying out S8.
The position for continuously adjusting transiting rod 12, makes it have different azimuths, and test transiting rod 20 in not Tongfang
The sphere centre coordinate of target ball 7 when parallactic angle.And the measurement number of sphere centre coordinate is calculated.
Measurement number refers to the number of the sphere centre coordinate of the target ball 7 positioned at different orientations of measurement.
In one embodiment, preset value is 10.When testing time is less than 10 times, again to the orientation of transiting rod 12
Angle is adjusted, and tests the sphere centre coordinate of target ball 7.Until testing time is equal to 10 times.
The sphere centre coordinate of the target ball 7 positioned at different orientations of acquisition is fitted to a spherical surface and recorded by S8.
S9 calculates each sphere centre coordinate of the target ball 7 of measurement at a distance from the spherical surface fitted, calculates each distance
Standard deviation sigma uses ± 3 σ as the precision index of evaluation Hooke's hinge.
Above-mentioned Hooke's hinge method for testing precision uses the principle of non-contact measurement, can avoid 7 sphere center position of target ball because connecing
Touch bring slight deformation or rigid body displacement, measuring accuracy increase；In addition, 10 testing efficiency of laser tracker is high,
One-shot measurement can complete the acquisition of the sphere center position data of target ball 7, greatly simplify test process, improve testing efficiency.
In addition, laser tracker 10 have the advantages that relative to three-coordinates measuring machine it is easy to carry, it is convenient on different ground
Point completes the accuracy test of Hooke's hinge.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without departing from the principles of the invention, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this hair
Bright protection scope.
Claims (9)
1. a kind of method for testing precision of Hooke's hinge, which comprises the following steps:
The lower U-shaped frame of Hooke's hinge is set on test platform by step 1；
Transiting rod is fixedly connected by step 2 with the upper U-shaped frame of the Hooke's hinge；
Target ball is set on the transiting rod by step 3；
Step 4 sets up laser tracker, so that the scope of activities of the Hooke's hinge is located at the test model of the laser tracker
In enclosing；
Step 5 carries out support fixation, the transiting rod after adjusting the transiting rod to a certain azimuth by adjusting support
Tilt angle it is adjustable by the adjusting support；
Step 6 measures the sphere centre coordinate and record of the target ball with the laser tracker, completes one-shot measurement；
Step 7, calculates the number of the sphere centre coordinate of the target ball positioned at different orientations of measurement, and judges to measure number
Whether preset value is more than or equal to, if it is not, then repeating step 5 to step 6, if so, carrying out step 8；
The sphere centre coordinate of the target ball positioned at different orientations of acquisition is fitted to a spherical surface and recorded by step 8；
Step 9 calculates each sphere centre coordinate of the target ball of measurement at a distance from the spherical surface fitted, calculates
The standard deviation sigma of each distance uses ± 3 σ as the precision index for evaluating the Hooke's hinge.
2. the method for testing precision of Hooke's hinge as described in claim 1, which is characterized in that the preset value is 10.
3. the method for testing precision of Hooke's hinge as described in claim 1, which is characterized in that azimuthal choosing of the transiting rod
It takes and meets the target ball and be evenly distributed on the upper half spherical surface of the Hooke's hinge.
4. the method for testing precision of Hooke's hinge as described in claim 1, which is characterized in that the adjusting support includes magnetic power meter
Seat and adjustment support frame, the magnetic stand are set on the test platform, one end of the adjustment support frame and the magnetic force
Gauge stand is threadedly coupled, and one end of the adjustment support frame is used to support the transiting rod.
5. the method for testing precision of Hooke's hinge as claimed in claim 4, which is characterized in that the adjustment support frame is far from described
One end of magnetic stand is equipped with U-shaped opening, and the transiting rod is set in the U-shaped opening.
6. the method for testing precision of Hooke's hinge as claimed in claim 5, which is characterized in that the lower U-shaped frame of the Hooke's hinge is logical
Test fixture is crossed on test platform, the magnetic stand is set on the test fixture.
7. the method for testing precision of Hooke's hinge as described in claim 1, which is characterized in that the laser tracker is passed through three
Foot prop is set up on the test platform, the tripod it is height-adjustable.
8. the method for testing precision of Hooke's hinge as described in claim 1, which is characterized in that in step 3, by the target ball magnetic
Power is adsorbed on the transiting rod.
9. the method for testing precision of Hooke's hinge as claimed in claim 8, which is characterized in that in step 3, the transiting rod packet
The body of rod and target ball seat are included, one end of the body of rod is fixedly connected with the upper U-shaped frame of the Hooke's hinge, and the target ball seat passes through magnetic force
It is adsorbed on the one end of the body of rod far from the upper U-shaped frame, the target ball is by magnetic-adsorption on the target ball seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910462806.5A CN110174052A (en) | 2019-05-30 | 2019-05-30 | A kind of Hooke's hinge method for testing precision |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910462806.5A CN110174052A (en) | 2019-05-30 | 2019-05-30 | A kind of Hooke's hinge method for testing precision |
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| CN110174052A true CN110174052A (en) | 2019-08-27 |
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| CN201910462806.5A Pending CN110174052A (en) | 2019-05-30 | 2019-05-30 | A kind of Hooke's hinge method for testing precision |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595359A (en) * | 2019-09-19 | 2019-12-20 | 中国科学院长春光学精密机械与物理研究所 | Online precision detection equipment for ball hinge |
| CN111855183A (en) * | 2020-07-29 | 2020-10-30 | 中国科学院光电技术研究所 | Multi-degree-of-freedom motion branched chain resolution testing platform and testing method |
| CN111844807A (en) * | 2020-06-15 | 2020-10-30 | 西安交通大学 | Contact type automatic calibration device and method for composite material laying equipment |
| CN113701699A (en) * | 2021-09-01 | 2021-11-26 | 烟台清科嘉机器人联合研究院有限公司 | System convenient for ring type Hooke hinge symmetry degree detection |
| CN115618650A (en) * | 2022-11-15 | 2023-01-17 | 中国电子科技集团公司第十研究所 | Method for correcting virtual sphere center position coordinates of spherical phased array antenna |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646156A (en) * | 2013-12-30 | 2014-03-19 | 北京建筑大学 | Ball target detection-based automatic registration method for laser point cloud data |
| CN104897093A (en) * | 2015-06-24 | 2015-09-09 | 中国航天空气动力技术研究院 | Hooke joint accuracy measurement method |
| US20150260506A1 (en) * | 2012-05-16 | 2015-09-17 | Faro Technologies, Inc. | Apparatus to compensate bearing runout in a three-dimensional coordinate measuring system |
| CN105651160A (en) * | 2014-11-04 | 2016-06-08 | 北京浩宇天地测绘科技发展有限公司 | 3D laser scanner spherical target of installation positioning device and using method thereof |
| WO2017157371A1 (en) * | 2016-03-18 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Device and method for the automatic visual control of a surface of at least one spherical body |
| CN109631762A (en) * | 2019-01-29 | 2019-04-16 | 合肥中控智科机器人有限公司 | A kind of method that laser self-calibration realizes Zero calibration |
-
2019
- 2019-05-30 CN CN201910462806.5A patent/CN110174052A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150260506A1 (en) * | 2012-05-16 | 2015-09-17 | Faro Technologies, Inc. | Apparatus to compensate bearing runout in a three-dimensional coordinate measuring system |
| CN103646156A (en) * | 2013-12-30 | 2014-03-19 | 北京建筑大学 | Ball target detection-based automatic registration method for laser point cloud data |
| CN105651160A (en) * | 2014-11-04 | 2016-06-08 | 北京浩宇天地测绘科技发展有限公司 | 3D laser scanner spherical target of installation positioning device and using method thereof |
| CN104897093A (en) * | 2015-06-24 | 2015-09-09 | 中国航天空气动力技术研究院 | Hooke joint accuracy measurement method |
| WO2017157371A1 (en) * | 2016-03-18 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Device and method for the automatic visual control of a surface of at least one spherical body |
| CN109631762A (en) * | 2019-01-29 | 2019-04-16 | 合肥中控智科机器人有限公司 | A kind of method that laser self-calibration realizes Zero calibration |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595359A (en) * | 2019-09-19 | 2019-12-20 | 中国科学院长春光学精密机械与物理研究所 | Online precision detection equipment for ball hinge |
| CN111844807A (en) * | 2020-06-15 | 2020-10-30 | 西安交通大学 | Contact type automatic calibration device and method for composite material laying equipment |
| CN111844807B (en) * | 2020-06-15 | 2021-10-08 | 西安交通大学 | Contact type automatic calibration device and method for composite material laying equipment |
| CN111855183A (en) * | 2020-07-29 | 2020-10-30 | 中国科学院光电技术研究所 | Multi-degree-of-freedom motion branched chain resolution testing platform and testing method |
| CN111855183B (en) * | 2020-07-29 | 2022-04-19 | 中国科学院光电技术研究所 | Multi-degree-of-freedom motion branched chain resolution testing platform and testing method |
| CN113701699A (en) * | 2021-09-01 | 2021-11-26 | 烟台清科嘉机器人联合研究院有限公司 | System convenient for ring type Hooke hinge symmetry degree detection |
| CN115618650A (en) * | 2022-11-15 | 2023-01-17 | 中国电子科技集团公司第十研究所 | Method for correcting virtual sphere center position coordinates of spherical phased array antenna |
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Application publication date: 20190827 |