CN207881649U - A kind of rotary double excitation contour outline measuring set - Google Patents
A kind of rotary double excitation contour outline measuring set Download PDFInfo
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- CN207881649U CN207881649U CN201820177720.9U CN201820177720U CN207881649U CN 207881649 U CN207881649 U CN 207881649U CN 201820177720 U CN201820177720 U CN 201820177720U CN 207881649 U CN207881649 U CN 207881649U
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Abstract
The utility model discloses a kind of rotary double excitation contour outline measuring sets, including detection zone, the data collector being connect with detection zone and the calculating main frame being connect with data collector；The test section includes mounting seat, is set in mounting seat rotating base, the holder for being set to rotating base both sides, the first laser rangefinder and second laser rangefinder for being separately mounted to holder both sides, the rotating base is rotatablely connected with mounting seat, and the first laser rangefinder and second laser rangefinder are connect with bracket slide.By measuring device provided by the utility model, the limitation to sample dimensions in measuring 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 is related to profilometry field, more particularly to a kind of rotary double excitation contour outline measuring set.
Background technology
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 has become the important component of advanced manufacturing technology with system.The profilometry of early stage is the position to object
It sets, the detection of the progress such as appearance and size, with the raising of the precision of production equipment, efficiency and Automatic survey degree, to measuring
More stringent requirements are proposed for technology, and traditional detection instrument has been not applied for the parts detection of complex geometric shapes,
The requirement for producing development in enormous quantities cannot be met.
Therefore, occurs laser measuring technique now, it is as a kind of efficient Technology of Precision Measurement, before generating
It is the needs due to production development to put forward one side, 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 apparatus, such as influence measuring instrument, synthesis measuring profilometer
Deng being widely used in machine-building now, measured mark compared with each portions such as, instrument development, automobile making, aviation and national defense industry
Door, can not only measure complex-shaped circumference, and can become a kind of digitized conversion of model value by such equipment
Equipment, thus widely paid close attention to by people.But since these novel measuring apparatus 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
Measuring object also has certain requirement.
For example, the measuring principle of existing Zaser contourgraph is that test specimen is 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 to position signal after processing enter computer, 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 can measure, it generally can only be to smaller
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 bidifly halos
Wide measuring device to can not only carry out the measurement of large scale test specimen, and more can measure comprehensively and accurately examination
The data such as profile, the surface roughness of part.
In order to achieve the above object, the utility model takes following technical scheme：
A kind of rotary double excitation contour outline measuring set, including detection zone, the data collector that is connect with detection zone and
The calculating main frame being connect with data collector；
The detection zone includes mounting seat, is set in mounting seat rotating base is set to rotating base both sides
Holder, be separately mounted to the first laser rangefinder and second laser rangefinder of holder both sides, the rotating base and installation
Base rotation connects, and the first laser rangefinder and second laser rangefinder are connect with bracket slide.
In the rotary double excitation contour outline measuring set, the side of the holder is provided with the first fluctuating orbit and
One servo motor, first fluctuating orbit include the first transmission belt being sequentially connected with first servo motor, and described first swashs
Optar is installed on the first fluctuating orbit and is fixedly connected with the first transmission belt；The other side of the holder is provided with second
Fluctuating orbit and the second servo motor, second fluctuating orbit include the second transmission being connect with the second servo motor transmission
Band, the second laser rangefinder are installed on the second fluctuating orbit and are fixedly connected with the second transmission belt.
In the rotary double excitation contour outline measuring set, the bottom of first fluctuating orbit and the second fluctuating orbit
It is both provided with limit switch, the limit point of the limit switch and the flush of rotating base.
In the rotary double excitation contour outline measuring set, the bottom of the rotating base is provided with sensor block, described
The third servo motor for driving rotating base to rotate and the induction knowledge of sensor block for identification are provided in mounting seat
Other device.
In the rotary double excitation contour outline measuring set, the induction identification device is infrared inductor.
Compared to the prior art, rotary double excitation contour outline measuring set provided by the utility model, including detection zone, with
The data collector of detection zone connection and the calculating main frame being connect with data collector；The detection zone include mounting seat,
The rotating base that is set in mounting seat, is separately mounted to the first of holder both sides at the holder for being set to rotating base both sides
Laser range finder and second laser rangefinder, the rotating base are rotatablely connected with mounting seat, the first laser rangefinder
It is connect with bracket slide with second laser rangefinder.By measuring device provided by the utility model, not only can greatly keep away
Exempt from the limitation to sample dimensions in measuring, more can also measure comprehensively and accurately the profile of test specimen, surface roughness
Etc. data.
Description of the drawings
Fig. 1 is the structural schematic diagram of rotary double excitation contour outline measuring set provided by the utility model.
Fig. 2 is the flow chart of rotary double excitation contour measuring method provided by the utility model.
Fig. 3 is the flow chart of step S50 in rotary double excitation contour measuring method provided by the utility model.
Fig. 4 is measuring coordinate schematic diagram in rotary double excitation contour measuring method provided by the utility model.
Fig. 5 is measuring point interpolation schematic diagram in rotary double excitation contour measuring method provided by the utility model.
Fig. 6 is that radius and diameter define schematic diagram in rotary double excitation contour measuring method provided by the utility model.
Fig. 7 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, third servo motor；32, induction is known
Other device；40, rotating base；50, holder；51, first laser rangefinder；52, second laser rangefinder；53, the first lift rail
Road；54, first servo motor；55, the second fluctuating orbit；56, the second servo motor；57, limit switch；60, sample.
Specific implementation mode
The utility model provides a kind of rotary double excitation contour measuring method, to make the purpose of this utility model, technology
Scheme and effect are clearer, clear, and the utility model is further described in the embodiment that develops simultaneously referring to the drawings.It should
Understand, specific embodiment described herein only to explain the utility model, is not used to limit the utility model.
Referring to Fig. 1, be a kind of structural schematic diagram of rotary double excitation contour outline measuring set provided by the utility model,
The measuring device includes detection zone（Non- label in figure）, the data collector 10 and and data collector that connect with detection zone
The calculating main frame 20 of connection；
The detection zone includes mounting seat 30, is set in mounting seat 30 rotating base 40 is set to rotation bottom
The holder 50 of 40 both sides of seat, the first laser rangefinder 51 and second laser rangefinder 52 for being separately mounted to 50 both sides of holder, institute
It states on rotating base 40 for placing sample 60.
Test specimen is carried out during specifically measuring by using the rotary double excitation contour outline measuring set, is needed first
Test specimen is placed on rotating base, and test specimen with rotating base rotates during pass through the laser positioned at test specimen both sides
Rangefinder carries out test specimen a little to sweep measurement.It is rotary double excitation profile measurement provided by the utility model please continue to refer to Fig. 2
The flow chart of method combines the step that above-mentioned measuring device measures test specimen by the rotary double excitation contour measuring method
Suddenly it specifically includes：
S10, detection host are separately turned on data collector and a pair of of laser range finder positioned at test specimen both sides, and control rotation
Turn pedestal and test specimen rotation is driven with desired speed；
S20, a pair of of laser range finder of control carry out two side points to test specimen and sweep information collection, and record test specimen is each in current plane
To the two-sided measurement data of contour detecting point；
After S30, rotating base rotate a circle, laser range finder rises predetermined altitude along holder, and is carried out again to test specimen
The point of new high degree plane sweeps information collection, two-sided measurement data of the record test specimen in each pair of 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 shape by one data of operating mode carrying out that test specimen is calculated.
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 laser ranging can also be made
Instrument is first started to work, then rotating base is made to start to rotate, 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 measured value of laser range finder simultaneously afterwards）.Later, laser range finder again
Rotating base stops operating when detecting Initial Detection Point, and rotates bottom after holder rises predetermined altitude in laser range finder
Seat restarts to rotate and set new Initial Detection Point.Further include step also, before step S20：Make a pair of of Laser Measuring
Distance meter is reset to the bottom of holder and is directed at the bottom surface of test specimen respectively.I.e. before laser range finder starts detection, make a pair of sharp
Optar is reset to the bottom of holder and is directed at the bottom surface of test specimen（The surface of rotating base）, ensure that a pair of of laser range finder can
Completely to measure the outline data of test specimen from the bottom to top.
The test specimen referred in step S20 is specially in the two-sided measurement data of each pair of contour detecting point of current plane
The ranging length apart from each contour detecting point rotates bottom with when measuring respectively for first laser rangefinder and second laser rangefinder
Seat is turned to the angle of position at this time by Initial Detection Point（Obtained data synchronous realize in data collecting instrument is measured to remember
Record）, and 3 d space coordinate system is established by calculating main frame, substitute into above-mentioned measurement data and combines corresponding calculation procedure（Such as
MATLAB, matrix＆laboratory matrix labotstory）Test specimen is obtained to take turns on the surface of the Difference angles of the measurement plane
Wide change curve, to obtain test specimen the measurement plane shape.
Further include step as shown in figure 4, before step S20：Detection host, which is established with the rotation center of rotating base, is
The virtual coordinate system of coordinate origin, and it is respectively that first laser rangefinder and second laser are surveyed to define a pair of of laser range finder
The abscissa of distance meter, first laser rangefinder is xa, first laser rangefinder ordinate be ya, the cross of second laser rangefinder
Coordinate is xb, second laser rangefinder ordinate be yb.In practical measurement, referring to Fig. 3, step S50 is specifically included：
S51, according to the equation in coordinates of 1 data definition test specimen both sides contour detecting point of operating mode；
S52, test specimen other side contour detecting is obtained according to the progress inverse operation of the equation in coordinates of test specimen side contour detecting point
The equation in coordinates of point；
S53, to the equation in coordinates of test specimen side contour detecting point and the coordinate backstepping side of test specimen other side contour detecting point
Cheng Jinhang interpolation calculations；
S54, obtain test specimen each pair of profile point of the level specific coordinate position.
Also, step S51 is specifically included：
Coordinate according to the first profile test point of first laser rangefinder side on one data definition test specimen of operating mode is（）, coordinate accounting equation is：
Wherein, xaFor the abscissa of first laser rangefinder, yaFor the ordinate of first laser rangefinder, l1iSwash for first
The distance measurement value of optar.
According to the coordinate of the first profile test point on test specimen（x1i, y1i）, obtain test specimen the first initial profile test point
（x1pi, y1pi）Coordinate it is as follows:
Wherein, wherein β1iFor test specimen any pointiTo the rotation angle of test specimen the first initial profile test point；
Coordinate according to the second contour detecting point of second laser rangefinder side on one data definition test specimen of operating mode is
（x2j, y2j）, coordinate accounting equation is：
Wherein, xbFor the abscissa of second laser rangefinder, ybFor the ordinate of second laser rangefinder, l2jSwash for second
The distance measurement value of optar, θbFor the angle between first laser rangefinder and second laser rangefinder.
According to the coordinate of the second contour detecting point on test specimen（x2j, y2j）, obtain test specimen the second initial profile test point（）Coordinate it is as follows:
Wherein, wherein β2jIt is test specimen any point j to the rotation angle of test specimen the second initial profile test point.
Further, step S52 is specifically included：
When the second initial profile test point（）When going to the contour detecting point of first laser rangefinder, it can obtain
The radius vector of the second initial profile test point to coordinate origin is at this time：
The radius vector is gone to when being contacted with first laser rangefinder, point (x 2p3j,y 2p3j) examined with the first initial profile of test specimen
The coordinate of measuring point overlaps, and coordinate is：
。
This point coordinates (x 2p3j,y 2p3j) should with measured by first laser rangefinder to coordinate overlap.And it is surveyed in second laser
The measuring point that the measuring point that distance meter obtains is obtained with first laser rangefinder may be not quite similar, and the measuring point of the two needs to carry out when calculating
Interpolation, as shown in figure 5, the step S53 is specifically included：
The corner of first initial profile test point of calculation testing piece is：
The corner of second initial profile test point of calculation testing piece is：
The distance of first initial profile test point to origin of calculation testing piece is：
The distance of second initial profile test point to origin of calculation testing piece is：
First initial profile test point to origin radius vector r2pcjIt is surveyed by first laser rangefinder to second laser by it
The corner of distance meter carries out linear interpolation and obtains：
Objective function f is：
WhereinNRotate a circle the number of measuring point for test specimen；
Object function f is solved, x is obtaineda、ya、xb、yb、θ0Value.Based on the value of this 5 parameters, by substituting into above-mentioned calculating
Formula can obtain the coordinate of one measuring point of operating mode（That is the shape of test specimen）.I.e. test specimen is in different height plane（Z-axis in space coordinates
Different location）Contour 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) 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. 6
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 practicality
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 in the calculation using interpolation（Interpolated point H i.e. in figure, this process pass through
Matlab programs are realized）.
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, it is that remaining elevation plane is walked in test specimen to calculate step
Rapid S51 to step S53, to obtain test specimen whole contour detecting point specific coordinate position.
Meanwhile based on above-mentioned rotary double excitation contour measuring method, the utility model also provides a kind of storage device,
Computer program is stored in the storage device, the computer program is suitable for being performed to realize as described in the utility model
Rotary double excitation contour measuring method.And as shown in Figure 1, it is based on the storage device, provided by the utility model one
In the rotary double excitation contour outline measuring set of kind, it is provided with processor 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 with reality
Existing rotary double excitation contour measuring method described in the utility model.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 rotates；
Logging modle, the testing number of the contour detecting point for recording the test specimen that a pair of of laser range finder detects respectively
According to.
The tool of each pair of contour detecting point of test specimen is calculated in computing module, the detection data for being recorded according to logging modle
Body coordinate.
Profile integrates module, and the specific coordinate for each pair of contour detecting point according to test specimen is integrated to obtain the shape of test specimen
Shape.
In addition, please continue to refer to Fig. 1, in the rotary double excitation contour outline measuring set, the rotating base and peace
Fill base rotation connection.The bottom of rotating base is provided with sensor block, is provided in the mounting seat for driving rotation bottom
The first servo motor of seat rotation and for identification the induction identification device of sensor block（It is not shown in figure）.It can know in induction
Other device makes laser range finder start to detect when recognizing sensor block, and makes when incuding identification device and again identifying that sensor block
Laser range finder stops detection, while controlling laser range finder and rising preset distance in holder（Such as 0.5 μm）.Specifically, described
It can be infrared inductor to incude identification device.
Holder both sides are both provided with fluctuating orbit and the second servo motor（It is also not shown in figure）, in actual moving process
Two servo motors can by with first laser rangefinder or the fixed belt-driven first laser ranging of second laser rangefinder
Instrument or second laser rangefinder carry out elevating movement on fluctuating orbit, and are respectively provided with limit in the lower end of the both sides of holder and open
Close, when first laser rangefinder and second laser rangefinder when contradicting limit switch during declining, that is, stop motion, at this time
The measurement point of first laser rangefinder and second laser rangefinder is directed at the surface of rotating base, that is, completes laser range finder
Reseting procedure.
In addition, continuing with combining refering to fig. 1 and Fig. 7, in the rotary double excitation contour outline measuring set, the rotation
Pedestal is rotatablely connected with mounting seat, and the first laser rangefinder 51, second laser rangefinder 52, which are slided with holder 50, to be connected
It connects.Further, the side of the holder 50 is provided with the first fluctuating orbit 53 and first servo motor 54, first lifting
Track includes the first transmission belt being sequentially connected with first servo motor（It is not shown in figure）, the first laser rangefinder installation
It is fixedly connected on the first fluctuating orbit and with the first transmission belt；The other side of the holder is provided with 55 He of the second fluctuating orbit
Second servo motor 56, second fluctuating orbit include the second transmission belt being connect with the second servo motor transmission（In figure not
It shows）, the second laser rangefinder is installed on the second fluctuating orbit and is fixedly connected with the second transmission belt.When the first servo
When motor and the second servo motor work, first laser rangefinder and second laser rangefinder can be driven to be realized on holder and risen
Drop movement.
Further, the bottom of first fluctuating orbit, 53 and second fluctuating orbit 55 is both provided with limit switch
57, the limit point of the limit switch 57 and the flush of rotating base.When first laser rangefinder and second laser ranging
Instrument stop motion when touching the limit point of limit switch during declining, first laser rangefinder and second laser are surveyed at this time
The measurement point of distance meter is directed at the surface of rotating base, that is, completes 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
The third servo motor 31 of driving rotating base rotation and for identification the induction identification device 32 of sensor block.Preferably, institute
It is infrared inductor to state induction identification device.Can incude identification device recognize sensor block when make first laser rangefinder and
Second laser rangefinder starts to detect, and makes first laser rangefinder and the when incuding identification device and again identifying that sensor block
Dual-laser rangefinder stops detection, while timely feedbacking to calculating main frame, controls first laser rangefinder and second laser ranging
Instrument rises preset distance in holder（Such as 0.5 μm）.
In conclusion a kind of rotary double excitation contour outline measuring set provided by the utility model, including detection zone and inspection
The calculating main frame surveyed the data collector of area's connection and connect with data collector；The detection zone includes mounting seat, sets
The rotating base that is placed in mounting seat, the holder for being set to rotating base both sides are separately mounted to the first of holder both sides and swash
Optar and second laser rangefinder, the rotating base and mounting seat are rotatablely connected, the first laser rangefinder and
Second laser rangefinder is connect with bracket slide.By measuring device provided by the utility model, not only can greatly avoid
To the limitation of sample dimensions in measurement, more the profile of test specimen, surface roughness can also be measured comprehensively and accurately etc.
Data.
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 should all belong to appended by the utility model
Scope of the claims.
Claims (5)
1. a kind of rotary double excitation contour outline measuring set, which is characterized in that the data being connect including detection zone, with detection zone are adopted
Storage and the calculating main frame being connect with data collector；
The detection zone includes mounting seat, is set in mounting seat rotating base, the branch for being set to rotating base both sides
Frame, the first laser rangefinder and second laser rangefinder for being separately mounted to holder both sides, the rotating base and mounting seat
Rotation connection, the first laser rangefinder and second laser rangefinder are connect with bracket slide.
2. rotary double excitation contour outline measuring set according to claim 1, which is characterized in that the side of the holder is set
It is equipped with the first fluctuating orbit and first servo motor, first fluctuating orbit includes to be sequentially connected with first servo motor
One transmission belt, the first laser rangefinder are installed on the first fluctuating orbit and are fixedly connected with the first transmission belt；The branch
The other side of frame is provided with the second fluctuating orbit and the second servo motor, and second fluctuating orbit includes and the second servo motor
The second transmission belt being sequentially connected, the second laser rangefinder are installed on the second fluctuating orbit and are fixed with the second transmission belt
Connection.
3. rotary double excitation contour outline measuring set according to claim 2, which is characterized in that first fluctuating orbit
It is both provided with limit switch with the bottom of the second fluctuating orbit, the limit point of the limit switch and the surface of rotating base are flat
Together.
4. rotary double excitation contour outline measuring set according to claim 3, which is characterized in that the bottom of the rotating base
Portion is provided with sensor block, and the third servo motor for driving rotating base to rotate is provided in the mounting seat and is used for
Identify the induction identification device of sensor block.
5. rotary double excitation contour outline measuring set according to claim 4, which is characterized in that the induction identification device
For infrared inductor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820177720.9U CN207881649U (en) | 2018-02-01 | 2018-02-01 | A kind of rotary double excitation contour outline measuring set |
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| CN201820177720.9U CN207881649U (en) | 2018-02-01 | 2018-02-01 | A kind of rotary double excitation contour outline measuring set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668523A (en) * | 2019-02-14 | 2019-04-23 | 宁波中令清洁技术有限公司 | A kind of detection device and its detection method of vehicle outer profile |
| CN110715638A (en) * | 2019-11-27 | 2020-01-21 | 湖南大合新材料有限公司 | Method for detecting flatness of crystal |
| CN114166179A (en) * | 2021-12-02 | 2022-03-11 | 中国农业大学 | Handheld portable contactless section measuring device |
-
2018
- 2018-02-01 CN CN201820177720.9U patent/CN207881649U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668523A (en) * | 2019-02-14 | 2019-04-23 | 宁波中令清洁技术有限公司 | A kind of detection device and its detection method of vehicle outer profile |
| CN110715638A (en) * | 2019-11-27 | 2020-01-21 | 湖南大合新材料有限公司 | Method for detecting flatness of crystal |
| CN114166179A (en) * | 2021-12-02 | 2022-03-11 | 中国农业大学 | Handheld portable contactless section measuring device |
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