CN208140023U - A kind of rotary laser contour outline measuring set - Google Patents
A kind of rotary laser contour outline measuring set Download PDFInfo
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- CN208140023U CN208140023U CN201820176828.6U CN201820176828U CN208140023U CN 208140023 U CN208140023 U CN 208140023U CN 201820176828 U CN201820176828 U CN 201820176828U CN 208140023 U CN208140023 U CN 208140023U
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- range finder
- laser range
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Abstract
The utility model discloses a kind of rotary laser contour outline measuring sets, including detection zone, the data collector connecting with detection zone and the calculating main frame connecting with data collector；The test section includes mounting seat, the rotating base being set in mounting seat, the bracket for being set to rotating base two sides and rack-mount laser range finder, the rotating base and mounting seat are rotatablely connected, and the laser range finder is connect with bracket slide.By measuring device provided by the utility model, the limitation in measurement to sample dimensions not only can be greatly avoided, more can also measure comprehensively and accurately the data such as the profile of test specimen, surface roughness.
Description
Technical field
The utility model relates to profilometry field, in particular to a kind of rotary laser contour outline measuring set.
Background technique
With the development of the times, profile measurement is in robot vision, the processing of industrial products and detection and national defence space flight
Equal fields suffer from extensive and important application value.As profilometry is got growing concern for, accurate measurement
Equipment and system have become the important component of advanced manufacturing technology.The profilometry of early stage is the position to object
It sets, the detection of the progress such as outer dimension, with the raising of the precision of production equipment, efficiency and Automatic survey degree, to measurement
More stringent requirements are proposed for technology, and traditional detection instrument has been not applied for the components detection of complex geometric shapes,
It is not able to satisfy the requirement for producing development in enormous quantities.
Therefore, occurs laser measuring technique now, it is as a kind of efficient Technology of Precision Measurement, before generating
Proposing one side is the needs due to production development, is on the other hand due to electronic technology, computer technology and precision processing technology
Development.After decades of development, there are various novel measuring devices, such as influence measuring instrument, synthesis measuring profilometer
Deng being widely used in machine-building, measurement mark now compared with each portions such as, instrument development, automobile manufacture, aviation and national defense industry
Door, is not only capable of measuring complex-shaped circumference by such equipment, but also can become a kind of digitized conversion of model value
Equipment, thus widely paid close attention to by people.But since these novel measuring devices may be only available for certain application requirement,
In the measurement of complex free curved surface, the data point information largely about curve form cannot be quickly and accurately obtained, and right
Measurement object also has certain requirement.
For example, the measuring principle of existing Zaser contourgraph is test specimen to be put on the table, inductance sensor is popped one's head in
Tested position is reached, starts to measure to moving range by defined X.In measurement process, sensor is from X to motor drag and along work
Single section inner surface profile variable signal is picked up on part surface, while X is corresponding with 0.5 μm of pitch-synchronous record sensor to grating
Position signal, sensor displacement signal and grating sampling X enter computer after processing to position signal, according to obtain
Two kinds of coordinate informations handle to obtain the technologies such as profile, percent ripple, the roughness of various needs by special contourgraph software
Parameter and curve.
But although make existing Zaser contourgraph that can measure the wheel of test specimen to a certain extent through the above way
The parameters such as exterior feature, surface roughness, two-dimensional and two-dimension displacement, but may have blind area in measurement process, cause to survey
Accuracy of measurement is affected.And it is restricted by the sample dimensions that existing Zaser contourgraph is capable of measuring, it generally can only be to lesser
Test specimen measures, i.e., there are limitations for measurement.
Thus the prior art could be improved and improve.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of rotary laser profiles
Measuring device can not only carry out the measurement of large scale test specimen, and can more measure the wheel of test specimen comprehensively and accurately
The data such as exterior feature, surface roughness.
In order to achieve the above object, the utility model takes following technical scheme：
A kind of rotary laser contour outline measuring set, including detection zone, the data collector being connect with detection zone and with
The calculating main frame of data collector connection；
The detection zone includes mounting seat, the rotating base being set in mounting seat, is set to rotating base two sides
Bracket and rack-mount laser range finder, the rotating base and mounting seat be rotatablely connected, the laser ranging
Instrument is connect with bracket slide.
In the rotary laser contour outline measuring set, the side of the bracket is provided with fluctuating orbit and the first servo
Motor, the fluctuating orbit include the transmission belt with first servo motor transmission connection, and the laser range finder is installed on lifting
It is fixedly connected on track and with transmission belt.
In the rotary laser contour outline measuring set, limit switches are arranged in the bottom of the fluctuating orbit, described
The limit point of limit switch and the flush of rotating base.
In the rotary laser contour outline measuring set, the bottom of the rotating base is provided with sensor block, the peace
The second servo motor for driving rotating base to rotate and the induction identification of sensor block for identification are provided in dress pedestal
Device.
In the rotary laser contour outline measuring set, the induction identification device is infrared inductor.
Compared to the prior art, rotary laser contour outline measuring set provided by the utility model, including detection zone and inspection
The calculating main frame surveying the data collector of area's connection and being connect with data collector；The detection zone includes mounting seat, sets
The rotating base that is placed in mounting seat, the bracket and rack-mount laser range finder for being set to rotating base two sides,
The rotating base and mounting seat are rotatablely connected, and the laser range finder is connect with bracket slide.It is mentioned by the utility model
The measuring device of confession not only can greatly avoid the limitation in measurement to sample dimensions, can also be more comprehensively and accurate
Measure the data such as profile, the surface roughness of test specimen.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of rotary laser contour outline measuring set provided by the utility model.
Fig. 2 is the flow chart one of rotary laser contour measuring method provided by the utility model.
Fig. 3 is the flowchart 2 of rotary laser contour measuring method provided by the utility model.
Fig. 4 is the flow chart of step S50 in rotary laser contour measuring method provided by the utility model.
Fig. 5 is that coordinate schematic diagram is measured in rotary laser contour measuring method provided by the utility model.
Fig. 6 is measuring point interpolation schematic diagram in rotary laser contour measuring method provided by the utility model.
Fig. 7 is that radius and diameter define schematic diagram in rotary laser contour measuring method provided by the utility model.
Fig. 8 is Specimen Shape signal in the specific embodiment of rotary laser contour measuring method provided by the utility model
Figure.
Fig. 9 is the test number of test specimen in the specific embodiment of rotary laser contour measuring method provided by the utility model
According to figure.
Figure 10 is the structural schematic diagram of the detection zone of rotary laser contour outline measuring set provided by the utility model.
In figure：10, data collector；20, calculating main frame；30, mounting seat；31, the second servo motor；32, induction is known
Other device；40, rotating base；41, sensor block；50, bracket；51, fluctuating orbit；52, first servo motor；53, limit switch；
60, laser range finder；70, sample.
Specific embodiment
The utility model provides a kind of rotary laser contour outline measuring set, to make the purpose of this utility model, technical side
Case and effect are clearer, clear, and the utility model is further described as follows in conjunction with drawings and embodiments.It should manage
Solution, specific embodiment described herein only to explain the utility model, are not used to limit the utility model.
Referring to Fig. 1, being a kind of structural schematic diagram of rotary laser contour outline measuring set provided by the utility model, institute
Stating measuring device includes detection zone（It is unlabeled in figure）, the data collector 10 that connect with detection zone and connect with data collector
The calculating main frame 20 connect；
The detection zone includes mounting seat 30, the rotating base being set in mounting seat 30 40, is set to rotation bottom
The bracket 50 of 40 two sides of seat and the laser range finder 60 that is mounted on bracket 50, for placing sample on the rotating base 40
70。
By using the rotary laser contour outline measuring set to test specimen carry out specifically measure during, need first by
Test specimen is placed on rotating base, and test specimen with rotating base rotates during pass through be located at test specimen side Laser Measuring
Distance meter carries out test specimen a little to sweep measurement.It is rotary laser contour measuring method provided by the utility model please continue to refer to Fig. 2
Flow chart, by the rotary laser contour measuring method combine above-mentioned measuring device test specimen is measured the step of it is specific
Including：
S10, detection host are separately turned on data collector and laser range finder, and control rotating base with desired speed band
Dynamic test specimen rotation；
S20, laser range finder carry out test specimen a little to sweep information collection, record test specimen in each contour detecting point of current plane
Measurement data；
After S30, rotating base rotate a circle, laser range finder rises predetermined altitude along bracket, and carries out again to test specimen
The point of new high degree plane sweeps information collection, measurement data of the record test specimen in each contour detecting point of new high degree plane；
S40, above-mentioned steps are repeated in, until completing to sweep information collection to the point of each elevation plane of test specimen；
S50, the measurement data by each contour detecting point of each elevation plane of test specimen, are calculated the shape of test specimen
Shape.
When rotating base drives test specimen rotation with desired speed, laser range finder starts work after it rotates special angle
Make, the contour detecting point for the test specimen that laser range finder measures at this time can be considered Initial Detection Point（Certainly it can also make laser ranging
Instrument is first started to work, then starts turning rotating base, and first point that laser range finder is detected is used as Initial Detection Point, so
As long as recording the angle-data of rotation and the measurement numerical value of laser range finder simultaneously afterwards）.Later, laser range finder again
Rotating base stops operating when detecting Initial Detection Point, and after laser range finder rises predetermined altitude along bracket, rotates bottom
Seat restarts to rotate and set new Initial Detection Point.It further include the reset of laser range finder also, before step S20
Process.I.e. before laser range finder starts detection, so that laser range finder is reset to the bottom of bracket and be directed at the bottom surface of test specimen
（The surface of rotating base）, guarantee that laser range finder can completely measure the outline data of test specimen from the bottom to top.
The test specimen referred in step S20 is specially laser in the measurement data of each contour detecting point of current plane
The ranging length apart from each contour detecting point and rotating base when measuring are turned at this time rangefinder by Initial Detection Point respectively
The angle of position（Obtained data synchronous realize in data collecting instrument is measured to record）, and space is established by calculating main frame
Three-dimensional system of coordinate substitutes into above-mentioned measurement data and combines corresponding calculation procedure（Such as MATLAB, matrix&laboratory matrix
Laboratory）Test specimen is obtained in the surface profile variations curve of the Difference angles of the measurement plane, to obtain test specimen at this
Measure the shape of plane.
After through the above steps, calculating main frame integration can show that test specimen is whole after the shape for obtaining all measurement planes of test specimen
The shape of body keeps measurement process convenient and efficient.Certainly, in order to obtain more accurate measurement as a result, referring to Fig. 3, in step
After S40, it can also continue to carry out following steps：
The detection data of each contour detecting point of each elevation plane of test specimen is remembered in the rotation of S401, the pedestal that stops rotating
Record is one data of operating condition；
S402, it after being moved to the test specimen on rotating base, detects host and controls rotating base again with desired speed
Drive test specimen rotation；
S403, laser range finder carry out volume test specimen after movement a little to sweep information collection, and the test specimen after record is mobile is current
The detection data of each contour detecting point of plane；
After S404, rotating base rotate a circle, the laser range finder on bracket rises predetermined altitude, laser range finder automatically
Test specimen after movement is carried out a little to sweep the laser data for collecting and recording new high degree；
S405, above-mentioned steps are repeated in, until complete to sweep information collection to the point of each elevation plane of test specimen after movement,
The detection data of each contour detecting point of each elevation plane of test specimen after movement is recorded as two data of operating condition.
It, can be according to obtained one data of operating condition and operating condition two by carrying out profile measurement to the test specimen after movement again
The more accurate chamfered shape data of test specimen are obtained after data analysis comparison.And it is noted that rotation in step S402
Turn the test specimen on pedestal to carry out during moving, the profile of the test specimen after needing to guarantee movement is without departing from rotating base
Center of rotation, it is ensured that the measurement data of laser range finder acquisition is effective.
Also, as shown in figure 5, further including step before step S20：Host is detected to establish with the rotation of rotating base
Center is the virtual coordinate system of coordinate origin, and the abscissa for defining laser range finder is xa, laser range finder vertical seat
It is designated as ya.In addition, the process that test specimen is moved from operating condition one to operating condition two can regard as with point () it is rotation center, rotation angle
For θ0Rotary course.X in virtual coordinate system is obtained by calculationa、ya、xa、yaAnd θ0Specific value, can determine test specimen in turn
The coordinate position of each profile measurement point.In actual measurement, referring to Fig. 4, step S50 is specifically included：
The equation in coordinates of S51, contour detecting point according to one data definition test specimen of operating condition before mobile；
The equation in coordinates of S52, contour detecting point according to two data definition test specimen of operating condition after mobile, and moved by test specimen
When each contour detecting point to test specimen after mobile of rotation center and rotation angle equation in coordinates carry out inverse operation after obtain work
The coordinate backstepping equation of contour detecting point in condition one；
S53, to the coordinate backstepping equation of contour detecting point in the equation in coordinates of contour detecting point in operating condition one and operating condition two
Carry out interpolation calculation；
S54, test specimen is obtained in the specific coordinate position of each profile point of the level.
Also, step S51 is specifically included：
Coordinate according to contour detecting point of the one data definition test specimen of operating condition before mobile is（）, coordinate accounting equation
For：
Wherein, xaFor the abscissa of laser range finder, yaFor the ordinate of laser range finder, l1iFor the survey of laser range finder
Away from value.
According to the coordinate of the contour detecting point of test specimen in operating condition one（）, test specimen is obtained by following coordinate accounting equation
Initial profile test point（x1pi,y1pi）Coordinate：
Wherein, β1iFor test specimen any point in operating condition oneiTo the rotation angle of test specimen initial profile test point.
After obtaining the coordinate accounting equation of the contour detecting point in operating condition one, the similarly also wheel in available operating condition two
The coordinate accounting equation of wide test point, i.e. step S52 are specifically included：
It is according to the coordinate that two data of operating condition obtain the contour detecting point before test specimen movement（）, coordinate calculating side
Cheng Wei：
Wherein, xaFor the abscissa of laser range finder, yaFor the ordinate of laser range finder, l2jFor the survey of laser range finder
Away from value；
According to the coordinate of measuring point on two test specimen of operating condition (), obtain the coordinate of two test specimen initial profile test point of operating condition
It is as follows：
Wherein, β2jIt is test specimen any point j in operating condition two to the rotation angle of test specimen initial profile test point；
Define test specimen it is mobile from operating condition one to operating condition two when rotation center be (), rotation angle θ0, profile on test specimen
Test point from the coordinate after operating condition two backstepping to operating condition one be (), it is concluded that () coordinate backstepping calculating side
Cheng Wei：
。
Test specimen restores to operating condition for the moment from operating condition two, and the measuring point coordinate that two kinds of condition calculatings obtain should be consistent.In addition, in work
Measuring point in condition one may be not quite similar with the measuring point in operating condition two, and the measuring point of the two needs to carry out interpolation when calculating, such as Fig. 6 institute
Show, the step S53 is specifically included：
The corner of the contour detecting point of test specimen is in calculating operating condition one：
The corner of the contour detecting point of test specimen is in calculating operating condition two：
The distance of contour detecting point to the origin of test specimen is in calculating operating condition one：
The distance of contour detecting point to the origin of test specimen is in calculating operating condition two：
In operating condition one contour detecting point to origin radius vector r2pcjPass through the corner of the contour detecting point of test specimen in operating condition two
Linear interpolation is carried out to obtain：
Objective function f is：
Wherein, N is that test specimen rotates a circle the number of measuring point；
Objective function f is solved, x is obtaineda、ya、x0、y0、θ0Value.Based on the value of this 5 parameters, by substituting into above-mentioned calculating
In the available operating condition one of formula in the coordinate of each contour detecting point and operating condition two each contour detecting point coordinate, i.e., test specimen is not
Same elevation plane（The different location of z-axis in space coordinates）Chamfered shape.
After having obtained the coordinate of the last contour detecting point of test specimen, test specimen is in the section of present level plane（It can be considered shape
Polygon）Area A and its type heart（Cx, Cy）It can be obtained respectively by following formula：
,
。
Here provide last vertex (x N+1,y N+1) be overlapped with initial vertex.
Also, although polygon should not have diameter, for the sake of being compared with sample and is convenient, such as Fig. 7
Shown, the utility model defines the term of radius R and diameter D：Radius R is the distance between measurement point I and type heart C.This is practical
It is novel to be defined as diameter D：Connect the part of the line of measurement point and the polygonal internal type heart；Due to the line that intersects with polygon
Phase antipoints may not only meet measurement point, therefore should be obtained using interpolation in calculating（Interpolated point H i.e. in figure, this process pass through
Matlab program is realized）.
It further include step after step S54：Compute repeatedly step, each profile of remaining elevation plane of calculation testing piece
The coordinate position of point, integration obtain the global shape of test specimen.Wherein, calculating step is that remaining elevation plane is walked in test specimen
Rapid S51 to step S53, to obtain the specific coordinate position of the whole contour detecting point of test specimen.
In the particular embodiment, as shown in figure 8, being cross sectional shape schematic diagram of the test sample in certain elevation plane,
It specifically can be considered an ellipse with protrusion.When by rotary laser contour measuring method provided by the utility model to test specimens
When product measure, available test data figure as shown in Figure 9, and x is finally determined through the above stepsa, ya, x0, y0,
θ0, respectively as follows：
160.0093, -4.9969, -163.3844,0.5012,0.1405.
Based on above-mentioned rotary laser contour measuring method, the utility model also provides a kind of storage device, described to deposit
Computer program is stored in storage device, the computer program is suitable for being performed to realize such as rotation described in the utility model
Formula laser profilometry method.And as shown in Figure 1, it is based on the storage device, provided by the utility model a kind of rotary
In laser profilometry device, processor is provided in the calculating main frame, is connect with the processor communication memory（I.e.
Above-mentioned storage device）, the memory is stored with computer program, and computer program is suitable for being performed to realize the utility model
The rotary laser contour measuring method.Specifically, the computer program includes：
Control module is used for turn-on data collector and laser range finder, and controls rotating base and driven with desired speed
Test specimen rotation；
Logging modle, the detection data of the contour detecting point of the test specimen detected for recording laser rangefinder.
The specific of each contour detecting point of test specimen is calculated in computing module, the detection data for being recorded according to logging modle
Coordinate.
Profile integrates module, for integrating to obtain the shape of test specimen according to the specific coordinate of each contour detecting point of test specimen.
In addition, continuing with combining refering to fig. 1 and Figure 10, in the rotary laser contour outline measuring set, the rotation
Pedestal and mounting seat are rotatablely connected, and the laser range finder is connect with bracket slide.Further, the side of the bracket 50
It is provided with fluctuating orbit 51 and first servo motor 52, the fluctuating orbit includes the transmission with first servo motor transmission connection
Band（It is not shown in the figure）, the laser range finder is installed on fluctuating orbit and is fixedly connected with transmission belt.When the first servo electricity
When machine works, laser range finder can be driven to realize elevating movement on bracket.
Further, the fluctuating orbit bottom be arranged limit switches 53, the limit point of the limit switch with
The flush of rotating base.The stop motion when laser range finder touches the limit point of limit switch during decline,
The surface of the measurement point alignment rotating base of laser range finder at this time, that is, complete the reseting procedure of laser range finder.
Further, the bottom of the rotating base is provided with sensor block 41, is provided with and is used in the mounting seat
Second servo motor 31 of driving rotating base rotation and for identification the induction identification device 32 of sensor block.Preferably, institute
Stating induction identification device is infrared inductor.Laser range finder can be made to start to examine when incuding identification device and recognizing sensor block
It surveys, and so that laser range finder is stopped detection when incuding identification device and again identifying that sensor block, while timely feedbacking to calculating
Host, control laser range finder rise preset distance in bracket（Such as 0.5 μm）.
In conclusion rotary laser contour outline measuring set provided by the utility model, including detection zone and detection zone connect
The data collector connect and the calculating main frame being connect with data collector；The detection zone includes mounting seat, is set to peace
The bracket and rack-mount laser range finder for filling the rotating base on pedestal, being set to rotating base two sides, the rotation
Turn pedestal and mounting seat is rotatablely connected, the laser range finder is connect with bracket slide.Pass through survey provided by the utility model
Device is measured, the limitation in measurement to sample dimensions not only can be greatly avoided, can also more be measured comprehensively and accurately
The data such as profile, the surface roughness of test specimen.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to appended by the utility model
Scope of protection of the claims.
Claims (5)
1. a kind of rotary laser contour outline measuring set, which is characterized in that acquired including detection zone, the data being connect with detection zone
Device and the calculating main frame being connect with data collector；
The detection zone includes mounting seat, the rotating base being set in mounting seat, the branch for being set to rotating base two sides
Frame and rack-mount laser range finder, the rotating base and mounting seat are rotatablely connected, the laser range finder with
Bracket slide connection.
2. rotary laser contour outline measuring set according to claim 1, which is characterized in that the side of the bracket is arranged
There are fluctuating orbit and first servo motor, the fluctuating orbit includes the transmission belt with first servo motor transmission connection, described
Laser range finder is installed on fluctuating orbit and is fixedly connected with transmission belt.
3. rotary laser contour outline measuring set according to claim 2, which is characterized in that the bottom of the fluctuating orbit
Limit switches, the limit point of the limit switch and the flush of rotating base are set.
4. rotary laser contour outline measuring set according to claim 3, which is characterized in that the bottom of the rotating base
Be provided with sensor block, be provided in the mounting seat for drive rotating base rotate the second servo motor and for knowing
The induction identification device of other sensor block.
5. rotary laser contour outline measuring set according to claim 4, which is characterized in that the induction identification device is
Infrared inductor.
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| CN201820176828.6U CN208140023U (en) | 2018-02-01 | 2018-02-01 | A kind of rotary laser contour outline measuring set |
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| CN201820176828.6U CN208140023U (en) | 2018-02-01 | 2018-02-01 | A kind of rotary laser contour outline measuring set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288908A (en) * | 2020-03-25 | 2020-06-16 | 日立电梯电机（广州）有限公司 | Roundness detection system and method |
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2018
- 2018-02-01 CN CN201820176828.6U patent/CN208140023U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288908A (en) * | 2020-03-25 | 2020-06-16 | 日立电梯电机（广州）有限公司 | Roundness detection system and method |
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