CN204924205U - Portable two -dimentional follow -up laser surveying device based on laser rangefinder sensor - Google Patents

Portable two -dimentional follow -up laser surveying device based on laser rangefinder sensor Download PDF

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Publication number
CN204924205U
CN204924205U CN201520695122.7U CN201520695122U CN204924205U CN 204924205 U CN204924205 U CN 204924205U CN 201520695122 U CN201520695122 U CN 201520695122U CN 204924205 U CN204924205 U CN 204924205U
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CN
China
Prior art keywords
vertical
measurement
slide unit
horizontal
range sensor
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CN201520695122.7U
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Chinese (zh)
Inventor
张代林
夏博熙
黄达文
陈仁喆
陈幼平
原洲艺
杨浩
周晹翎
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华中科技大学
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Priority to CN201520695122.7U priority Critical patent/CN204924205U/en
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Abstract

The utility model discloses a portable two -dimentional follow -up laser surveying device based on laser rangefinder sensor, it includes horizontal migration subassembly and vertical removal subassembly, the horizontal migration subassembly includes horizontal migration slip table and horizontal drive step motor, the horizontal migration slip table is made horizontal X by the horizontal drive step motor drive and to the motion, is installed horizontal grating chi on it, vertical removal subassembly includes vertical lift slip table, vertical drive step motor and laser rangefinder sensor, vertical lift slip table is fixed on the horizontal migration slip table, and it is made vertical Z by the drive of vertical drive step motor and to the motion, installs vertical grating chi on it, the laser rangefinder sensor passes through the connecting plate to be fixed on vertical lift slip table. The utility model discloses a measurement that two dimension measuring platform combines the laser rangefinder sensor to realize the plane degree have easy operation, but measuring range is big, advantages such as precision height.

Description

A kind of Portable two-dimensional slave laser measurement mechanism based on laser range sensor

Technical field

The utility model belongs to the multifunction measuring set such as flatness and profile field, more specifically, relates to a kind of Portable two-dimensional slave laser measurement mechanism based on laser range sensor.

Background technology

At present, along with the fast development of electronic industry, each electronic product is because its screen is increasing, thickness is more and more thinner, a series of problem can be caused to produce when its flatness and its designing requirement are not inconsistent, therefore flatness be detected as the essential items for inspection in production run, in order to can the defect of Timeliness coverage product, the detection must carrying out real-time to the flatness of product in production run, in addition, often need in practical application to measure the xsect of some profile and assess, as the wear measurement of track, the contour accuracy assessment etc. of curved surface part.

In prior art, some design proposals are made for the measurement mechanism of flatness.Such as, CN201410514042.7 discloses a kind of flatness checking device, this pick-up unit comprises horizontal metroscope, one-dimensional movement platform and two-dimensional movement platform, and wherein one-dimensional movement platform and two-dimensional movement platform composition D translation platform, can realize detecting the flatness of 150mm × 150mm plane; And for example, CN201320872526.X discloses a kind of flatness laser measuring apparatus, this measuring instrument comprises workbench, three-dimensional moving mechanism, Programmable Logic Controller, generating laser and the data collector be electrically connected successively with generating laser and PC, it adopts three-dimensional moving mechanism and generating laser with the contactless detection real-time realizing product plane degree, and accuracy of detection is high.And for having assessment and the measurement of curved surface profile, mainly adopt the equipment such as three coordinate measuring machine at present.

But further study, still there is following defect or deficiency in above-mentioned prior art: it is all measured with three-dimensional coordinate, need to make accurate cubing, implementation is loaded down with trivial details, needs to carry out quite complicated preposition work, there is detection efficiency low, complex structure, the problem of complex operation; In addition, when three-dimensional coordinates measurement is applied to high precision test, exist precision not, be inconvenient to problems such as carrying.

Utility model content

For above defect or the Improvement requirement of prior art, the utility model provides a kind of Portable two-dimensional slave laser measurement mechanism based on laser range sensor, it adopts two-dimensional measurement platform to realize the high-acruracy survey of flatness in conjunction with miniature laser distance measuring sensor, and pass through its key component as moved horizontally assembly, structure and the concrete set-up mode thereof of vertical moving assembly carry out studying and designing, can effectively solve measuring accuracy accordingly low, carry the problem of inconvenience, in addition, it is little that the principle that the utility model have employed servo antrol overcomes common laser distance measuring sensor measurement range, be unfavorable for the shortcoming of profile measurement, there is automaticity high, simple to operate, measurable range is large, precision advantages of higher.

For achieving the above object, the utility model proposes a kind of Portable two-dimensional slave laser measurement mechanism based on laser range sensor, it is characterized in that, comprise and move horizontally assembly and vertical moving assembly, wherein:

The described assembly that moves horizontally comprises and moves horizontally slide unit and horizontal drive stepper motor; The described slide unit that moves horizontally makes horizontal X to motion by described horizontal drive driving stepper motor, it is provided with horizontal grating scale;

Described vertical moving assembly comprises vertical lifting slide unit, vertically Driving Stepping Motor and laser range sensor; Move horizontally on slide unit described in described vertical lifting slide unit is fixed on, it is driven by described vertical Driving Stepping Motor and does the motion of vertical Z-direction, it is provided with vertical grating scale; Described laser range sensor is fixed on described vertical lifting slide unit by web joint.

As preferred further, described horizontal drive stepper motor is supported by horizontal guide rail and leads.

As preferred further, described measurement mechanism also comprises display screen, and described display screen is for showing the two-dimensional silhouette curve of workpiece for measurement.

As preferred further, the position of described workpiece for measurement vertical direction is deducted by the distance that described laser range sensor is measured and is calculated by the positional distance of described vertical optical grating ruler measurement.

As preferred further, described in described horizontal drive stepper motor and vertical Driving Stepping Motor drive respectively by ball-screw auxiliary driving, move horizontally the rectilinear motion of slide unit and vertical lifting slide unit.

In general, the above technical scheme conceived by the utility model compared with prior art, mainly possesses following technological merit:

1. the utility model adopts two-dimensional measurement platform in conjunction with the portable type measuring scheme of miniature laser distance measuring sensor, realize the high-acruracy survey of flatness, simultaneously, the utility model devises follow-up control device, and to overcome common laser distance measuring sensor measurement range little, be unfavorable for the shortcoming of profile measurement, thus the profile measurement equipment of current automatic three-coordinates measuring machine can be replaced, realize simple curved surface profile measurement, in addition, the utility model two dimension slave laser measurement mechanism automaticity is high, curved surface profile can easily be measured in perpendicular, installation weight is light, easy to carry.

2. the utility model also carries out studying to the concrete structure and concrete rigging position of the key component in two-dimentional slave laser measurement mechanism as moved horizontally assembly, vertically moving assembly and sets, laser range sensor is utilized to obtain position, workplace vertical direction with coordinating of vertical grating scale, horizontal grating scale is utilized to obtain position, workpiece level direction, cooperatively interacting and synergy by each key component, realize the measurement of planeness of workpiece and Two-dimensional Surfaces profile, have that simple to operate, measurable range is large, precision advantages of higher.

Accompanying drawing explanation

Fig. 1 is the stereographic map of two-dimentional slave laser measurement mechanism;

Fig. 2 is the instrumentation plan of two-dimentional slave laser measurement mechanism.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each embodiment of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.

A kind of Portable two-dimensional slave laser measurement mechanism based on laser range sensor of the utility model design, the servo-actuated non-cpntact measurement of the two dimension for realizing flatness and curved surface profile, it comprises and moves horizontally assembly and vertical moving assembly.

More specific detail will be carried out one by one below to key component of the present utility model.

As one of key component of the present utility model, as shown in Figure 1, move horizontally assembly to comprise and move horizontally slide unit 2 and horizontal drive stepper motor 10, move horizontally slide unit 2 and make horizontal X to motion by horizontal drive stepper motor 10 driving, move horizontally on slide unit 2 and horizontal grating scale 1 is installed, with the position of the flat Mobile Slide of measure water, thus can obtain workpiece calibration point position in the horizontal direction, horizontal drive stepper motor 10 is supported by horizontal guide rail 3 and leads.

As another key component of the present utility model, as shown in Figure 1, vertical moving assembly comprises vertical lifting slide unit 6, vertically Driving Stepping Motor 11 and laser range sensor 7, vertical lifting slide unit 6 is fixed on and moves horizontally on slide unit 2, to form XZ two dimension tracking measurement platform, it can move in the horizontal direction with moving horizontally slide unit, and vertical lifting slide unit 6 is driven by vertical Driving Stepping Motor 11 and does the motion of vertical Z-direction, it is provided with the vertical grating scale 4 for measuring its position; Laser range sensor 7 is vertically placed and is used for measuring distance, and it is fixed on the tache motorice of vertical lifting slide unit 6 by web joint 5, and can move at vertical direction.

In addition, two-dimentional slave laser measurement mechanism of the present utility model is also provided with control system assembly 8, control system assembly 8 is made up of Single Chip Microcomputer (SCM) system and stepper motor driver, for the motion of level of control Mobile Slide 2 and vertical lifting slide unit 6, process laser range sensor 7, horizontal grating scale 1 and the range data that vertically grating scale 4 feeds back also are presented on display screen 9.Concrete, Single Chip Microcomputer (SCM) system reads the position signalling of vertical grating scale 4 and laser range sensor 7 measurement thus the positional information of acquisition vertical direction, the position signalling of Single Chip Microcomputer (SCM) system read level grating scale 1 thus obtain the positional information of horizontal direction, then will draw on display screen 9 after the position information process of horizontal direction and vertical direction and show two-dimensional silhouette curve, and by data line transfer to computer for data processing; Stepper motor driver drives horizontal drive stepper motor and vertical Driving Stepping Motor, and horizontal drive stepper motor 10 and vertical Driving Stepping Motor 11 drive the rectilinear motion moving horizontally slide unit 2 and vertical lifting slide unit 6 respectively by ball-screw auxiliary driving.

Below by specific explanations according to the operating process of two-dimentional slave laser measurement mechanism of the present utility model and principle.

Servo antrol principle of the present utility model is: the laser range sensor 7 being installed on vertical direction measures the distance of vertical direction, distance according to the vertical direction measured changes by the driving stepper motor of vertical direction servo-actuated modulation vertical lifting slide unit 6, the distance of laser range sensor 7 and workpiece for measurement measurement point is made to remain setting value d, this setting value is for example 30mm, adopt this distance that laser range sensor can be made to keep best measurement position, thus laser range sensor keep higher measuring accuracy when profile variations.

Flatness of the present utility model and two-dimensional silhouette measuring principle: the distance on workpiece for measurement 12 surface that the vertical direction position of workpiece is measured by laser range sensor is deducted and calculated by the vertical direction stepper motor of the optical grating ruler measurement of the vertical direction following position produced that moves, this following position refers to the distance for keeping laser range sensor 7 and workpiece for measurement measurement point, the displacement that vertical direction stepper motor regulates; The horizontal direction position of workpiece calibration point is obtained by the optical grating ruler measurement moved horizontally on slide unit.

During measurement, when measuring the profile information in a vertical direction cross section of free form surface, move horizontally slide unit 2 at the uniform velocity to move, vertical lifting slide unit 6 drives laser range sensor 7 to move at vertical direction, when laser range sensor 7 is crossed near apart from tested curved surface, vertical lifting slide unit 6 is with dynamic sensor to rise, when laser range sensor is crossed far away apart from tested curved surface, vertical lifting slide unit 6 is with dynamic sensor to decline, thus realizes the servo antrol at vertical direction.

Each moment of measuring, the vertical direction position of workpiece is the two-dimensional coordinate of this moment workpiece together with the position grouping of the horizontal direction by optical grating ruler measurement, can draw the measurement of planeness data of measured workpiece or the position point set of two-dimensional silhouette by the location sets in all moment, the utility model two dimension following measurement device is connected to SCM Based control system assembly and finally calculates flatness or two-dimensional silhouette.The measuring accuracy of horizontal direction of the present utility model depends on that the precision (reaching as high as more than 1um) of grating scale, the precision of vertical direction depend on the minimum precision (reaching as high as more than 1um) of grating scale and laser range sensor.

To sum up, the utility model adopts two-dimensional measurement platform in conjunction with the portable type measuring scheme of miniature laser distance measuring sensor, the high-acruracy survey to flatness can be realized, simultaneously, devising follow-up control device, to overcome common laser range sensor measurement range less, be unfavorable for the shortcoming of profile measurement, thus the profile measurement equipment of current automatic three-coordinates measuring machine can be replaced, realize simple curved surface profile measurement.In addition, the utility model Portable two-dimensional slave laser measurement mechanism automaticity is high, curved surface profile can easily be measured in perpendicular, device is less than 15 kilograms, be easy to carry, can be applicable to the measurement of planeness and two-dimensional silhouette measurement, as the measurement in steel plain, wheel hub outer circular section, taper hole cross section etc.

Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.

Claims (5)

1. based on a Portable two-dimensional slave laser measurement mechanism for laser range sensor, it is characterized in that, comprise and move horizontally assembly and vertical moving assembly, wherein:
The described assembly that moves horizontally comprises and moves horizontally slide unit (2) and horizontal drive stepper motor (10); The described slide unit (2) that moves horizontally makes horizontal X to motion by the driving of described horizontal drive stepper motor (10), it is provided with horizontal grating scale (1);
Described vertical moving assembly comprises vertical lifting slide unit (6), vertically Driving Stepping Motor (11) and laser range sensor (7); Move horizontally described in described vertical lifting slide unit (6) is fixed on slide unit (2), it is made vertical Z-direction by the driving of described vertical Driving Stepping Motor (11) and moves, and it is provided with vertical grating scale (4); Described laser range sensor (7) is fixed on described vertical lifting slide unit (6) by web joint (5).
2., as claimed in claim 1 based on the Portable two-dimensional slave laser measurement mechanism of laser range sensor, it is characterized in that, described horizontal drive stepper motor (10) is supported by horizontal guide rail (3) and is led.
3. as claimed in claim 2 based on the Portable two-dimensional slave laser measurement mechanism of laser range sensor, it is characterized in that, described measurement mechanism also comprises display screen (9), and described display screen (9) is for showing the two-dimensional silhouette curve of workpiece for measurement (12).
4. as claimed in claim 3 based on the Portable two-dimensional slave laser measurement mechanism of laser range sensor, it is characterized in that, the position of described workpiece for measurement (12) vertical direction is deducted by the distance that described laser range sensor (7) is measured the positional distance measured by described vertical grating scale (4) and calculates.
5. as claimed in claim 4 based on the Portable two-dimensional slave laser measurement mechanism of laser range sensor, it is characterized in that, described in described horizontal drive stepper motor (10) and vertical Driving Stepping Motor (11) drive respectively by ball-screw auxiliary driving, move horizontally the rectilinear motion of slide unit (2) and vertical lifting slide unit (6).
CN201520695122.7U 2015-09-09 2015-09-09 Portable two -dimentional follow -up laser surveying device based on laser rangefinder sensor CN204924205U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091802A (en) * 2015-09-09 2015-11-25 华中科技大学 Portable two-dimensional following laser measurement device based on laser distance measuring sensor
CN105910573A (en) * 2016-05-27 2016-08-31 苏州骏发精密机械有限公司 Flatness detection device
CN106226758A (en) * 2016-10-13 2016-12-14 中国汽车工业工程有限公司 Adjustable laser ranging mechanism
CN108981619A (en) * 2018-07-30 2018-12-11 山东冬瑞高新技术开发有限公司 A kind of stator core testing flatness method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091802A (en) * 2015-09-09 2015-11-25 华中科技大学 Portable two-dimensional following laser measurement device based on laser distance measuring sensor
CN105910573A (en) * 2016-05-27 2016-08-31 苏州骏发精密机械有限公司 Flatness detection device
CN106226758A (en) * 2016-10-13 2016-12-14 中国汽车工业工程有限公司 Adjustable laser ranging mechanism
CN106226758B (en) * 2016-10-13 2019-05-17 中国汽车工业工程有限公司 Adjustable laser ranging mechanism
CN108981619A (en) * 2018-07-30 2018-12-11 山东冬瑞高新技术开发有限公司 A kind of stator core testing flatness method

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Granted publication date: 20151230

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