CN208171184U - Split type alignment target is marked with and the calibrating installation with the target - Google Patents
Split type alignment target is marked with and the calibrating installation with the target Download PDFInfo
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- CN208171184U CN208171184U CN201820771497.0U CN201820771497U CN208171184U CN 208171184 U CN208171184 U CN 208171184U CN 201820771497 U CN201820771497 U CN 201820771497U CN 208171184 U CN208171184 U CN 208171184U
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Abstract
The utility model provides a kind of split type calibration target, matches when being calibrated using the space length error of indication of the laser tracker to laser scanner with target mirror and uses as measurement target drone, including：Target stand；With taper shank, the connector being arranged on taper shank and the target microscope base on connector and being used to be connected by magnetic absorption with target mirror is arranged in target mirror support components support；And target ball component, have strong side taper shank, the three-dimensional adjusting mechanism being arranged on the taper shank of ball side and the target ball being arranged in three-dimensional regulation structure, wherein, taper shank, ball side taper shank are Morse taper shank, which is of the same size and tolerance, and cone is down-set, mohs bush is provided on target stand, the cone of the mohs bush is downward, opening upwards, and mohs bush matches with taper shank and ball side taper shank.The utility model is additionally provided with above-mentioned split type alignment target target calibrating installation.
Description
Technical field
The utility model relates to a kind of calibration targets, and in particular to a kind of split type alignment target is marked with and has this split type
Alignment target target calibrating installation.
Background technique
With the development of science and technology, the major projects such as especially big aircraft manufacturing, digitlization is accurately positioned and is assembled,
The demand of the measurement of large parts accurate three-dimensional, product quality monitoring and reverse-engineering is more and more, laser tracker, laser thunder
Reach, the application of the new spatials coordinate-measuring instrument such as laser 3 d scanner, iGPS it is further extensive.The space ranging of this quasi-instrument
Precision is the premise of the large scale equipments assembly precision such as large parts machining accuracy and automobile, aircraft, blower.
The emergence and development of three-dimensional laser measuring technique provide completely new technological means for the acquisition of space three-dimensional information.
Three Dimensional Ground laser scanner is as a kind of efficient, accurate and reliable space surveying and mapping technology in mapping, archaeology, building, forestry
It is used widely in equal fields.Its measurement method is similar with laser tracker, but because using non-contact active measurement method,
Can a large amount of sampled points of quick obtaining body surface three dimensional space coordinate, and without using target mirror in measurement process.Closely
Nian Lai, it is traceable to calibration, performance verification and measurement with the raising of development and the required precision of three-dimensional laser scanning technique
The demand of property is also continuously increased.
The calibration of laser scanner is broadly divided into radial repeatability, target repeatability, the radial distance error of indication and sky
Between apart from several projects such as the error of indication.The radial distance error of indication refers to along measurement axis direction relative distance measured value and reference
The difference of value.Radial repeatability refers to the repeatability to the radial absolute distance measured value of the same fixed target.Space length indicating value
Error amount measures the target of space different distance and orientation, the measured value of relative distance and the difference of reference value.Target weight
Renaturation refers to the repeatability of target centre coordinate (point) measured value.Wherein, radial repeatability and target repeatability only need one
A individual target can be realized.The calibration of the radial distance error of indication can use long guideway baseline, laser interferometer, cooperation
A target on sliding table is realized.The calibration of the space length error of indication is just comparatively more complicated, and needing will be multiple
Target is fixed on a rigid structure, and using the instrument of higher precision grade between the center any two target away from (centre of sphere away from)
Demarcated, as the reference value of space length, therefore, to the center of fixed target on a rigid structure away from (centre of sphere away from) into
Rower is fixed, is the important link for establishing laser scanner space length error of indication calibrating installation.
Spherical target is widely used in all kinds of three-dimensional laser scanner measurements due to its symmetry in all directions
In, in order to realize the conversion of Point Cloud of Laser Scanner, the unification of different survey station laser scanner measurement coordinate systems.Laser is swept
The spherical target for retouching instrument need to have diffusing characteristic diffuser, generally dull surface, and the centre of sphere can not be measured directly, generally use indirect survey
The method of amount obtains sphere centre coordinate.
Most common method is to put on movement in spherical target using laser tracker target mirror, passes through the measurement of laser tracker
Data fit the centre of sphere.But laser tracker is utilized to measure fitting process, ball center's error is by ball surface shape, measurement point
The how many influence of number, and it is time-consuming and laborious.In addition, the coordinate unification in order to realize laser tracker and laser scanner, so as to
In the performance indicator of the laser tracker evaluation laser scanner with the higher an order of magnitude of space ranging precision grade, how to allow
The target of the two is key point with one heart.American National Standard and technical research institute (NIST) use integral type target, by pyramid mirror
It is placed in the center of aluminum hemisphere, is applied while realizing total station and laser scanner.But this method, the first ball of hemisphere
Spending precision will not be very high, second domestic existing processing technology, it is ensured that pyramid mirror and hemisphere centre of sphere concentricity with higher
It is difficult.
Utility model content
The utility model is to carry out to solve the above-mentioned problems, and it is an object of the present invention to provide a kind of split type alignment target is marked with
And there is the split type alignment target target calibrating installation.
The utility model provides a kind of split type calibration target, in the space using laser tracker to laser scanner
It matches when being calibrated apart from the error of indication with target mirror and is used as measurement target drone, had the feature that, including：Target stand；
Target mirror support components support with taper shank, the connector being arranged on taper shank and is arranged on connector and inhales for passing through magnetism
The attached target microscope base being connected with target mirror；And target ball component, have strong side taper shank, the three-dimensional regulation machine being arranged on the taper shank of ball side
Structure and the target ball being arranged in three-dimensional regulation structure, wherein taper shank, ball side taper shank are Morse taper shank, Morse taper shank tool
Have identical size and tolerance, and cone is down-set, mohs bush be provided on target stand, the cone of the mohs bush to
Under, opening upwards, mohs bush matches with taper shank and ball side taper shank.
In split type calibration target provided by the utility model, it can also have the feature that：Wherein, three-dimensional regulation
Mechanism is disjunctor D translation platform.
In split type calibration target provided by the utility model, it can also have the feature that：Wherein, target stand is upper
The lateral surface of the opening of mohs bush is provided with external screw thread, split type calibration target further includes nut, the nut and outer spiral shell
Line matches, for rotating and jacking up taper shank and ball side taper shank upwards.
The utility model additionally provides a kind of calibrating installation, for calibrating the space length error of indication of laser scanner,
It has the feature that, including：Target mirror；First split type calibration target, have the first target stand, the first target mirror support components support and
The first target ball component with the first target ball；Second split type calibration target, have the second target stand, the second target mirror support components support with
And the second target ball component with the second target ball；Length provides part, is marked with and second point for carrying the first split type alignment target
Body formula calibrates target；And laser tracker, for issue laser and measure target mirror be located at the first target mirror support components support with
Coordinate when the second target mirror support components support simultaneously obtains the distance between two coordinates value as gauged distance value, the first target ball and
Measurement target drone of two target balls as laser scanner obtains the ball between the first target ball and the second target ball for laser scanner scans
Heart distance value, so that the difference for calculating centre of sphere distance value and gauged distance value obtains the space length indicating value mistake of laser scanner
Difference, wherein the first split type alignment target is marked with and the second split type calibration target is above-mentioned split type calibration target.
In calibrating installation provided by the utility model, it can also have the feature that：Wherein, the outer surface of target ball is
Matt spherical surface.
The utility model additionally provides a kind of calibrating installation, which is characterized in that including：Target mirror；At least three split type schools
Quasi- target, each split type calibration target all have target stand, target mirror support components support and the target ball component with target ball；Length mentions
Piece supplying, for carrying split type calibration target；And laser tracker, it is located at any one target mirror support group for measuring target mirror
Centre coordinate when part obtains any two target mirror corresponding with two centre coordinates according to any two centre coordinate and holds
The distance between component value is ask to be used as gauged distance value, thus according to the ball between the gauged distance value and corresponding two target balls
The difference of heart distance value obtains the space length error of indication of laser scanner, wherein point of split type alignment target mark among the above
Body formula calibrates target.
The action and effect of utility model
The split type calibration target according to involved in the utility model, because taper shank and ball side taper shank are rulers having the same
Very little and tolerance Morse taper shank, and the mohs bush having on target stand matches with the Morse taper shank, so, the split type school
The target mirror support components support and target ball component of quasi- target can accurately be fallen into the mohs bush of target stand by Morse taper shank, be provided
Accurate positioning, has very high repeatability precision.
Calibrating installation according to the present utility model, target of the target mirror therein as laser tracker, two split type schools
The target mirror support components support of quasi- target provides the coordinate position of target mirror, obtains gauged distance value, two targets for laser tracker measurement
For ball for laser scanner measurement centre of sphere distance value, laser scanning is can be obtained in the difference for calculating centre of sphere distance value and gauged distance value
The space length error of indication of instrument.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiments of the present invention lieutenant colonel's standard apparatus；
Fig. 2 is split type alignment target target structural schematic diagram in the embodiments of the present invention.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, with
Lower combination accompanying drawings and embodiments to the split type calibration target of the utility model and this there is the split type alignment target target to calibrate
Device and the corrected calibration method of laser scanner is specifically addressed using the calibrating installation.
Fig. 1 is the structural schematic diagram of the embodiments of the present invention lieutenant colonel's standard apparatus.
As shown in Figure 1, calibrating installation 100 is used to measure the space length error of indication of laser scanner, including first point
The body formula calibration split type calibration target 20 of target 10, second, target mirror 30, length connector 40, laser tracker (are not shown in figure
Show).First split type calibration target 10 is identical as the second split type calibration structure of target 20, with the first split type calibration target
It is described in detail for 10.
Fig. 2 is split type alignment target target structural schematic diagram in the embodiments of the present invention.
As shown in Fig. 2, the first split type calibration target 10 is in the space length using laser tracker to laser scanner
It matches when the error of indication is calibrated with target mirror 30 and is used as measurement target drone, including the first target stand 11, the first target mirror support
Component 12, the first target ball component 13 and nut 14.
As shown in Fig. 2, the upper end of the first target stand 11 be provided with cone downwards, the mohs bush 111 of opening upwards, the first target
The lateral surface that seat 11 is located at the opening of mohs bush 111 is provided with the external screw thread extended vertically.
Nut 14 and the external screw thread of the first target stand 11 match, and are taking out the first target mirror support components support 12 and the first target ball
When component 13, user can rotating nuts 14 upwards, convenient for the first target mirror support components support 12 and the first target ball component 13
It takes out.
First target mirror support components support 12 has the first taper shank 121, the first connector 122 and the first target microscope base 123.
First taper shank 121 is Morse taper shank, and the cone of the Morse taper shank is downward, matches with mohs bush 111 and can fall
Enter in mohs bush 111.Since Morse taper shank and 111 matched of mohs bush need to rotate spiral shell upwards when taking out
Mother 14 is to overcome frictional force to take out Morse taper shank upwards.
The lower end of first connector 122 is fixed on 121 upper end of the first taper shank.
First target microscope base 123 is fixed on the upper end of the first connector 122, and the upper end of the first target microscope base 123 is the conical surface, the cone
Face is connect by magnetic absorption with target mirror 30.
First target ball component 13 is used as the measurement target drone of laser scanner in a calibration process, including the first ball side cone
Handle 131, the first three-dimensional adjusting mechanism 132 and the first target ball 133.
First ball side taper shank 131 is Morse taper shank, and the cone of the Morse taper shank is downward, matches simultaneously with mohs bush 111
It can fall into mohs bush 111.Since Morse taper shank and 111 matched of mohs bush need to revolve upwards when taking out
Turn nut 14 is to overcome frictional force to take out Morse taper shank upwards.First ball side taper shank 131 and the first taper shank 121 are having the same
Tolerance and size.
First three-dimensional adjusting mechanism 132 is the desk-top disjunctor D translation platform of compact, and the desk-top disjunctor three-dimensional of the compact is flat
Mounting hole is arranged at the bottom of moving stage, and the upper end that can be mounted directly to the first ball side taper shank 131 is attached fixation.
The slide construction of the disjunctor D translation platform uses decussation roller guide rail structure, X, Y-direction translating stroke 5mm, Z-direction liter
Stroke 5mm drops.First three-dimensional adjusting mechanism 132 use minimum resolution for the differential head of 0.01mm make platform carry out translation or
Lifting.
First target ball 133 is mounted on the table top of D translation platform, concentric with target mirror 30 under the adjusting of differential head.First
The outer surface of target ball 133 is matt spherical surface.
Target mirror 30 is used when being calibrated using laser tracker to laser scanner as the target of laser tracker.
The outer bulb diameter of target mirror 30 is 1.5 inches, and prism of corner cube is contained in inside.
Length provides part 40 for carrying the first split type calibration target 10 and the second split type calibration target 20.At this
In embodiment, it is rigid structural member that length, which provides part 40,.
Laser tracker is located at the first target mirror support components support 12 and the second target mirror support components support 22 for measuring target mirror 30
When coordinate position, and then the distance value both obtained is as gauged distance value, thus obtain with laser scanner scans the
The first target ball 133 in one target ball component 13 is compared with the centre of sphere distance value of the second target ball 233 of the second target ball component 23
Obtain the space length error of indication of laser scanner.
Before being calibrated using calibrating installation 100 to laser scanner, first have to split type to target mirror 30 and first
The first target ball 133 in calibration target 10 and the second target ball 233 in the second split type target 20 carry out concentricity school respectively
Just.
Target mirror 30 and the concentricity correction of the first target ball 133 mainly include the following steps that：
First target mirror support components support 12 is fixed at the Mohs of the first target stand 11 by the first taper shank 121 by step 1-1
In tapered sleeve 111, then the first target stand 11 is fixed on the workbench of three coordinate measuring machine.
Target mirror 30 is placed on the first target microscope base 123 of the first target mirror support components support 12 by step 1-2.
Step 1-3 utilizes the coordinate of 5 points on the spherical outer profile of three coordinate measuring engine measurement target mirror 30.
Step 1-4, according to the coordinate of 5 points on the spherical outer profile of the step 1-3 target mirror 30 measured, fitting obtains target mirror
Centre coordinate (the x of 30 spherical outer profilej, yj, zj)。
The position of step 1-5, the workbench for keeping the first target stand 11 to be fixed on three coordinate measuring machine are constant, by rotating spiral shell
Mother 14 jacks up the first taper shank 121, and the first target mirror support components support 12 is removed.
First target ball component 13 is mounted on the mohs bush of the first target stand 11 by the first ball side taper shank 131 by step 1-6
In 111, the coordinate of 5 points on the outer profile of the first target ball 133 of the first target ball of three coordinate measuring engine measurement component 13 is utilized.
Step 1-7, according to the coordinate of 5 points of the outer profile of step 1-6 the first target ball 133 measured, fitting obtains the
Centre coordinate (the x of one target ball 133q, yq, zq)。
Step 1-8 calculates the deviation of the centre coordinate of target mirror 30 and the centre coordinate of the first target ball 133 according to the following formula,
Wherein, △x=xq-xj, △y=yq-yj, △z=zq-zj。
Step 1-9 passes through the differential head in the first three-dimensional adjusting mechanism 132 in the first target ball component 13 according to deviation
The position of the first target ball 133 is adjusted, so that deviation △x、△y、△zRespectively less than 20 μm.
Step 1-10, as deviation △x、△y、△zAt respectively less than 20 μm, the first three-dimensional adjusting mechanism 132 is locked, is completed
The correction of the concentricity of target mirror 30 and the first target ball 133.
The aligning step of the concentricity of second target ball 233 of target mirror 30 and the second split type calibration target 20 uses target mirror 30
With the concentricity aligning step of the first target ball 133.
The calibration steps that calibrating installation 100 after being corrected using concentricity calibrates laser scanner includes following step
Suddenly：
First target stand 11 and the second target stand 21 are mounted on length spaced apartly and provided 40 on part by step 1.
First target mirror support components support 12 is mounted on the mohs bush of the first target stand 11 by the first taper shank 121 by step 2
In 111.
Second target mirror support components support 22 is mounted on the mohs bush of the second target stand 21 by the second taper shank 221 by step 3
In 211.
Target mirror 30 is placed on the first target microscope base 123 of the first target mirror support components support 12 by step 4.
Step 5 obtains the first target co-ordinates value of target mirror 30 using laser tracker measurement.
Step 6 removes target mirror 30 from the first target microscope base 123 of the first target mirror support components support 12, is then placed within
On second target microscope base 223 of two target mirror support components supports 22.
Step 7 is measured again using laser tracker and obtains the second target co-ordinates value of target mirror 30.
Step 8 obtains target mirror 30 according to the first target co-ordinates value and the second target co-ordinates value and is located at the first target microscope base
123 and sphere centre coordinate when the second target microscope base 223, and then the centers of two centre ofs sphere is obtained away from i.e. gauged distance value.
In the present embodiment, it in measurement standard distance value, adjusts the position of laser tracker and guarantees the logical of target mirror 30
Unthreaded hole face laser tracker always, so that when target mirror 30 is located at the first target microscope base 123 and the second target microscope base 223 in target mirror 30
Heart line is overlapped with the emergent ray of laser tracker.
Step 9, by the first target mirror support components support 12 and the second target mirror support components support 22 respectively from the first target stand 11 and second
Target stand 21 is removed.
First target ball component 13 and the second target ball component 23 are mounted on the first target stand 11 and the second target respectively by step 10
On seat 21.
Step 11 obtains the first target ball 133 and the second target ball of the first target ball component 13 using laser scanner scans
Centre of sphere distance value between second target ball 233 of component 23.
Step 12, calculate centre of sphere distance value and gauged distance value difference, the difference for laser scanner space away from
From the error of indication.
In the present embodiment, in the calibrating installation 100 used in the calibration of laser scanner, including the first split type school
The split type calibration target 20 of quasi- target 10, second, target mirror 30, length provide part 40 and laser tracker, in practical applications,
Calibrating installation may include target mirror, N number of split type calibration target, for carry split type alignment target target length provide part and
Laser tracker, wherein N >=3.
Calibration method comprising N number of split type alignment target target calibrating installation is：Pass through above-mentioned concentricity correction side first
Method successively carries out concentricity correction to target mirror and each split type alignment target target target ball, N number of after then correcting concentricity
Split type alignment target target target stand is mounted at the different location on length connector simultaneously, by each split type alignment target target
Target microscope base support components support is connect with corresponding target stand, later using laser tracker measurement target mirror in each microscope base support group
Coordinate position when the target microscope base of part.
Select any two target as one group of measurement pair, according to target mirror the coordinate position of two targets distance difference
Obtain gauged distance value.Then the target mirror support components support of two targets is removed, changes the corresponding target ball component of each target into, benefit
With the target ball in two target ball components of laser scanner measurement, the centre of sphere distance value of two target balls is obtained, calculates the centre of sphere distance
The difference of value and gauged distance value.
And so on, two different targets of reselection calculate two targets of the measurement centering as another group of measurement pair
Between centre of sphere distance value and gauged distance value difference, until obtaining all any targets two-by-two in N number of split type target
The difference of centre of sphere distance value between mark and gauged distance value, numerical value is maximum for laser scanner in these differences measured
The space length error of indication.
For example, four split type calibration targets are denoted as A, B, C, D respectively when split type alignment target target number is four,
The difference of the centre of sphere distance value between A and B and gauged distance value is measured first, and then, successively measurement obtains between A and C, A
The difference of centre of sphere distance value and gauged distance value between between D, B and C, B and D and between C and D, most
Afterwards, the maximum space length error of indication for laser scanner of numerical value in these differences measured.
The error analysis calibrated about the calibrating installation using the utility model to laser scanner is as follows：
Forming the error component that gauged distance value introduces using calibrating installation includes：Laser tracker range error, laser
Centralized positioning error, laser scanner target ball surface shape error, target mirror and the scanning target ball concentricity of tracker target mirror,
Mohs bores the deviation of resetting error and the laser tracker target mirror centre of sphere and Mohs axis of cone line.
Wherein, the purely radial ranging of laser tracker error after wavelength compensation is better than 10-6L, L are gauged distance, when
When gauged distance is 3m, it is 3 μm that laser tracker, which demarcates the error introduced when gauged distance,.
The centralized positioning precision of high-precision laser tracker target mirror is 0.0001 inch, as 2.54 μm in the market.Swash
Photoscanner target ball surface shape error is 15 μm.Laser can be tracked by the method for three coordinate measuring machine and optical alignment
The centre coordinate difference at instrument target mirror center and scanning target ball center is adjusted within 35 μm.The then split type alignment target target center
Positioning accuracy (target mirror center and target ball outer profile concentricity) is up to 0.05mm.
The resetting error of Morse taper shank can be measured by three coordinate machine and be obtained.Laser tracker target mirror is placed on not
On family name's taper shank, installation target stand is fixed on the workbench of three coordinate machine, obtains target in such a way that three coordinate sampling sites are fitted every time
The sphere centre coordinate of target mirror after dismounting Morse taper shank is repeated several times in the centre of sphere three-dimensional coordinate of mirror, measurement, and it is fixed that available Mohs cone repeats
Position error, maximum value are 10 μm.
When Morse taper shank is fitted into the mohs bush of target stand, due to the circumferential nature of Morse taper shank, each Morse taper shank
When being fitted into identical axial position in mohs bush, it not can guarantee with the relative position of target stand circumferentially identical.Cause
This also can introduce error providing gauged distance when the target mirror centre of sphere of laser tracker and Morse taper shank axis are there are when deviation.
The error can guarantee within 10 μm by machining.
Finally, the calibrating installation constituted using the split type calibration target, the uncertainty of the gauged distance provided, in 3m
In long range, 0.1mm can be reached.
The action and effect of embodiment
According to the split type calibration target in the present embodiment because taper shank and ball side taper shank be of the same size and
The Morse taper shank of tolerance, and mohs bush matches with the Morse taper shank, so, the split type alignment target target target mirror support group
Part and target ball component can accurately be fallen into the mohs bush of target stand by Morse taper shank, provide accurate positioning, be had very
High repeatability precision.
According to the calibrating installation in the present embodiment, target of the target mirror therein as laser tracker, two split type schools
The target mirror support components support of quasi- target provides the coordinate position of target mirror, obtains gauged distance value, two targets for laser tracker measurement
For ball for laser scanner measurement centre of sphere distance value, laser scanning is can be obtained in the difference for calculating centre of sphere distance value and gauged distance value
The space length error of indication of instrument.
The method for also referring to calibrate laser scanner using above-mentioned calibrating installation in the present embodiment.It is right first
Target mirror and the first target ball and target mirror and the second target ball carry out concentricity correction respectively, can directly be calibrated and be swashed using laser tracker
Photoscanner avoids the time-consuming and laborious mode of laser tracker target mirror sampling site fitting centre of sphere in scanner target ball.And it can
By guaranteeing the concentricity of target mirror and target ball, so that higher using calibration accuracy of the laser tracker to laser scanner.
In addition, the split type alignment target target centralized positioning error is realized within 0.05mm by optical alignment, than
Centralized positioning precision ± 0.01 inch (± 0.25mm) high about an order of magnitude of the scanning ball of target microscope base can be matched in the market, more
Add and is suitable as laser scanner calibration standard device.
In addition, target ball component is mounted on standard rod, portable laser calibration of scanner standard can be formed, is solved
The certainly scene of laser scanner and outdoor long range calibration problem.
In addition, in the present embodiment, use nut as the jacking mechanism of Morse taper shank so that Morse taper shank more rapidly,
More easily it is detached from mohs bush.
Multiple split type calibration targets are also mountable in three-dimensional large scale spacelab, realize laser radar and laser
The repetition measurement and the space error of indication of scanner are calibrated.
In addition, forming multi-source heterogeneous network using more, a variety of Large-scale Measuring Instruments, large parts digitlization is realized
The in-site measurements applications such as assembly, are one of following large-scale metrology research hotspots.And to realize the benchmark system of a variety of measuring systems
One, it is be unable to do without the application of versatility target or interchangeability target, the split type calibration target and dress calibration method in the present embodiment are easy
General target is applied in expansion.
In addition, also related in the present embodiment comprising at least three split type alignment target target calibrating installations, using more
A split type calibration target may be constructed a gauged distance value between any two groups, show for the space length of laser scanner
The calibration of value error provides more data references.
Above embodiment is the preferred case of the utility model, is not intended to limit the protection scope of the utility model.
Claims (6)
1. a kind of split type calibration target is carrying out school using the space length error of indication of the laser tracker to laser scanner
It matches with target mirror and is used as measurement target drone on time, which is characterized in that including：
Target stand；
Target mirror support components support is used in combination on the connector with taper shank, the connector being arranged on the taper shank and setting
In the target microscope base being connected by magnetic absorption with the target mirror；And
Target ball component, tool strong side taper shank, the three-dimensional adjusting mechanism being arranged on the taper shank of the ball side and setting are described three
The target ball in adjustment structure is tieed up,
Wherein, the taper shank, ball side taper shank are Morse taper shank, which is of the same size and tolerance,
And cone is down-set,
It is provided with mohs bush on the target stand, the cone of the mohs bush is downward, opening upwards,
The mohs bush matches with the taper shank and ball side taper shank.
2. split type calibration target according to claim 1, it is characterised in that：
Wherein, the three-dimensional adjusting mechanism is disjunctor D translation platform.
3. split type calibration target according to claim 1, it is characterised in that：
Wherein, the lateral surface of the opening on the target stand positioned at the mohs bush is provided with external screw thread,
The split type calibration target further includes nut, which matches with the external screw thread, for rotating and jacking up upwards
The taper shank and ball side taper shank.
4. a kind of calibrating installation, for calibrating the space length error of indication of laser scanner, which is characterized in that including：
Target mirror；
First split type calibration target, with the first target stand, the first target mirror support components support and with the first target of the first target ball
Ball component；
Second split type calibration target, with the second target stand, the second target mirror support components support and with the second target of the second target ball
Ball component；
Length provides part, is marked with and the second split type calibration target for carrying the described first split type alignment target；And
Laser tracker is located at the first target mirror support components support and described for issuing laser and measuring the target mirror
Coordinate when two target mirror support components supports simultaneously obtains the distance between two coordinates value as gauged distance value, the first target ball and second
Measurement target drone of the target ball as the laser scanner obtains first target ball and described for the laser scanner scans
Centre of sphere distance value between two target balls, so that the difference for calculating the centre of sphere distance value and the gauged distance value obtains described swashing
The space length error of indication of photoscanner,
Wherein, the described first split type alignment target is marked with and the second split type calibration target is to appoint in claims 1 to 3
Split type calibration target described in meaning one.
5. calibrating installation according to claim 4, it is characterised in that：
Wherein, the outer surface of the target ball is matt spherical surface.
6. a kind of calibrating installation, for calibrating the space length error of indication of laser scanner, which is characterized in that including：
Target mirror；
At least three split type calibration targets, each split type calibration target include target stand, target mirror support components support and
Target ball component with target ball；
Length provides part, for carrying the split type calibration target；And
Laser tracker, for measuring the centre coordinate when target mirror is located at any one of target mirror support components support, according to
Any two centre coordinate obtains the distance between any two target mirror support components support corresponding with two centre coordinates value
As gauged distance value, to be obtained according to the difference of the centre of sphere distance value between the gauged distance value and corresponding two target balls
The space length error of indication of the laser scanner,
Wherein, the split type alignment target is designated as split type calibration target described in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820771497.0U CN208171184U (en) | 2018-05-23 | 2018-05-23 | Split type alignment target is marked with and the calibrating installation with the target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820771497.0U CN208171184U (en) | 2018-05-23 | 2018-05-23 | Split type alignment target is marked with and the calibrating installation with the target |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208171184U true CN208171184U (en) | 2018-11-30 |
Family
ID=64364462
Family Applications (1)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109764806A (en) * | 2019-01-04 | 2019-05-17 | 西安交通大学 | Sound state calibrating installation and dynamic and static calibration method for laser tracker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109764806A (en) * | 2019-01-04 | 2019-05-17 | 西安交通大学 | Sound state calibrating installation and dynamic and static calibration method for laser tracker |
| CN109764806B (en) * | 2019-01-04 | 2021-01-19 | 西安交通大学 | Dynamic and static calibration device and dynamic and static calibration method for laser tracker |
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