CN102354320A - Method for matching beam parts based on white light scanning - Google Patents
Method for matching beam parts based on white light scanning Download PDFInfo
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- CN102354320A CN102354320A CN2011102016744A CN201110201674A CN102354320A CN 102354320 A CN102354320 A CN 102354320A CN 2011102016744 A CN2011102016744 A CN 2011102016744A CN 201110201674 A CN201110201674 A CN 201110201674A CN 102354320 A CN102354320 A CN 102354320A
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- 238000004458 analytical method Methods 0.000 claims description 5
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Abstract
The invention relates to the field of methods for matching beam parts of vehicles, in particular to a method for matching the beam parts based on white light scanning. The method comprises the following steps of: a, performing white light scanning on the beam parts to be assembled by using a white light scanner to obtain a three-dimensional point cloud; b, processing the three-dimensional cloud of the parts; c, performing three-dimensional assembly on the processed three-dimensional point cloud; if a matching effect is good, determining that the parts is qualified; if an interference is still discovered, modifying according to the position and the data of the discovered interference; and repeating the step a; and d, assembling real parts. The position of the interference can be seen intuitively by assembling the three-dimensional point cloud of the beam parts to be assembled; and the parts with high matching degrees can be obtained by modifying a relative mould according to the position and the data of the interference; therefore, a test period is shortened, work load is reduced, and work efficiency is improved.
Description
Technical field
The present invention relates to the matching process field of automobile beam-like part, particularly the beam-like part matching process that scans based on white light.
Background technology
Along with the develop rapidly of auto industry, require more and more higher for vehicle product quality.In the automobile body-in-white manufacture process, the matching precision of beam piece has directly determined the precision of body in white skeleton, but the manufacturability of beam-like part itself is poor, and bounce-back problem large scale precision is low, has a strong impact on the debugging cycle and the adjustment accuracy of body in white skeleton.For longeron class part, it is qualified that single-piece is not also represented in margin tolerance cubing or three-dimensional testing result, will see also more whether the result of related part coupling is qualified.The beam piece coupling is to adopt red lead powder to find to mate the position of interference to the part that is under the steady state (SS) (being meant that mould is in the beam-like part that processes under the normal operating conditions) at present; Gap in finding to mate with plasticine; But this result is energy not often; Can not change data fully into and revise mould; Need to pass through test repeatedly; Rule of thumb revise the purpose that reaches coupling, make that the coupling workload of beam piece is very big, the cycle is very long.
Summary of the invention
The beam-like part matching process that the purpose of this invention is to provide a kind of interference position quantification of the beam-like part that will mate each other based on white light scanning.
For realizing above-mentioned purpose, the present invention has adopted following technical scheme: a kind of beam-like part matching process based on white light scanning may further comprise the steps:
A, beam-like part to be assembled is carried out white light scanning, obtain three-dimensional point cloud with the white light scanner;
The three-dimensional point cloud of b, parts processed;
C, the three-dimensional point cloud after will handling carry out the three-dimensional assembling, if matching effect well is qualified part; If still have interference to make amendment, then repeating step a according to position and the data found;
D, physical part is assembled.
Owing to adopt above scheme, the three-dimensional point cloud of beam-like part to be assembled is assembled, can find out interference position intuitively; According to interference position and data modification related die, just can obtain the higher part of matching degree, shorten the test period; Reduce workload, increase work efficiency.
Embodiment
A kind of beam-like part matching process based on white light scanning may further comprise the steps:
A, beam-like part to be assembled is carried out white light scanning, obtain three-dimensional point cloud with the white light scanner;
The three-dimensional point cloud of b, parts processed;
C, the three-dimensional point cloud after will handling carry out the three-dimensional assembling, if matching effect well is qualified part; If interference is arranged according to the position of finding and data make amendment mould, repeating step a then;
D, physical part is assembled.
The white light scanner is a kind of spatial digitizer, can obtain the series of points cloud through overscanning, constitutes the three-dimensional model of scanned copy.The three-dimensional point cloud of beam-like part to be assembled is assembled according to the car load position; Can find out interference position intuitively; Data modification related die according to interference position and three-dimensional point cloud; Just can obtain the higher part of matching degree; Need not to carry out match test in kind; Shorten the test period, reduced workload significantly, increase work efficiency.
Described step b is openable three-dimensional data for the data conversion with three-dimensional point cloud; The present invention is that the data conversion with three-dimensional point cloud is the CATIA data; Concrete method for transformation is following: open CATIA software; Directly from getting into Digitized Shape Editor (digitizing shape editor) module; With Import (importing) order three-dimensional point cloud being imported CATIA opens; CATIA software is the three-dimensional software that most those skilled in the art can skillfully operate, and is convenient to the operation of subsequent treatment analysis procedure.
Described step b makes digital-to-analogue for three-dimensional point cloud is converted into three-dimensional digital-to-analogue according to the data of three-dimensional point cloud, afterwards each part digital-to-analogue is assembled according to the car load assembly relation, just can observe the matching degree of part intuitively.
The point cloud at the place of interfering is done section analysis and measurement data among the described step c; Section analysis operation step among the present invention is following: open CATIA software; The face section that in Digitized Shape Editor (the digitizing shape editor) module of assembling, needs with planarsections (plane section) choosing; Use curve from scan (from the sweep trace formation curve) that the curve that a cloud generates is become editable curve then, utilize simple survey instrument to obtain revising the position and the numerical value of mould then.
To sample scanning coupling of the part of steady state (SS); Wherein steady state (SS) is meant that mould is in the beam-like part that processes under the normal operating conditions; Because processing mold is identical; The change in size degree is identical; The similarity of part has typicalness more greatly, need not one by one that part scans, and takes sampling scanning to mate; Significantly reduce workload, improved work efficiency.
The three-dimensional point cloud of described different parts adopts the color that has nothing in common with each other, and promptly different parts adopts various colors, and the position that interferes during assembling just can come into plain view, and is convenient to analysis and observation.
Described section is vertically interfered position and two spaced apart at least, and the modification data that obtain to the data analysis of a plurality of sections are precision more, reduces and revises and scanning times.
Claims (7)
1. beam-like part matching process based on white light scanning may further comprise the steps:
A, beam-like part to be assembled is carried out white light scanning, obtain three-dimensional point cloud with the white light scanner;
The three-dimensional point cloud of b, parts processed;
C, the three-dimensional point cloud after will handling carry out the three-dimensional assembling, if matching effect well is qualified part; If interference is arranged according to the position of finding and data make amendment mould, repeating step a then;
D, physical part is assembled.
2. the beam-like part matching process based on white light scanning according to claim 1 is characterized in that: described step b is openable three-dimensional data for the data conversion with three-dimensional point cloud.
3. the beam-like part matching process based on white light scanning according to claim 1, it is characterized in that: described step b is for to be converted into three-dimensional digital-to-analogue with three-dimensional point cloud.
4. the beam-like part matching process based on white light scanning according to claim 1, it is characterized in that: the three-dimensional point cloud that interferes the position among the described step c is done section analysis and measurement data.
5. the beam-like part matching process based on white light scanning according to claim 1 is characterized in that: the part of steady state (SS) is sampled scan coupling.
6. the beam-like part matching process based on white light scanning according to claim 1 is characterized in that: the three-dimensional point cloud of described different parts adopts the color that has nothing in common with each other.
7. the beam-like part matching process based on white light scanning according to claim 4 is characterized in that: described section is vertically interfered position and two spaced apart at least.
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| CN2011102016744A CN102354320A (en) | 2011-07-19 | 2011-07-19 | Method for matching beam parts based on white light scanning |
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| CN2011102016744A CN102354320A (en) | 2011-07-19 | 2011-07-19 | Method for matching beam parts based on white light scanning |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103440388A (en) * | 2013-09-06 | 2013-12-11 | 上海大众汽车有限公司 | Method for evaluating car matching quality through virtual assembling |
| CN104200010A (en) * | 2014-08-13 | 2014-12-10 | 上海无线电设备研究所 | Method for acquiring target geometry outside surface data and system |
| CN106164912A (en) * | 2014-03-31 | 2016-11-23 | 韩国叁铭信息株式会社 | Utilize the collision detection system and method for cloud data |
| CN106503358A (en) * | 2016-11-02 | 2017-03-15 | 北京汽车研究总院有限公司 | A kind of parts assembly and detection method and system |
| CN111692991A (en) * | 2020-06-02 | 2020-09-22 | 哈尔滨工程大学 | Point cloud data acquisition method for measuring batten bonding surface based on white light interference |
| CN113607730A (en) * | 2021-08-03 | 2021-11-05 | 无锡乾鹏医疗科技有限公司 | Part detection method, device, terminal and readable storage medium |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103440388A (en) * | 2013-09-06 | 2013-12-11 | 上海大众汽车有限公司 | Method for evaluating car matching quality through virtual assembling |
| CN103440388B (en) * | 2013-09-06 | 2017-03-01 | 上海大众汽车有限公司 | The method that Virtual assemble is evaluated to car quality of match |
| CN106164912A (en) * | 2014-03-31 | 2016-11-23 | 韩国叁铭信息株式会社 | Utilize the collision detection system and method for cloud data |
| CN104200010A (en) * | 2014-08-13 | 2014-12-10 | 上海无线电设备研究所 | Method for acquiring target geometry outside surface data and system |
| CN104200010B (en) * | 2014-08-13 | 2017-06-13 | 上海无线电设备研究所 | A kind of method and system of target geometric outer surface data acquisition |
| CN106503358A (en) * | 2016-11-02 | 2017-03-15 | 北京汽车研究总院有限公司 | A kind of parts assembly and detection method and system |
| CN111692991A (en) * | 2020-06-02 | 2020-09-22 | 哈尔滨工程大学 | Point cloud data acquisition method for measuring batten bonding surface based on white light interference |
| CN111692991B (en) * | 2020-06-02 | 2021-09-10 | 哈尔滨工程大学 | Point cloud data acquisition method for measuring batten bonding surface based on white light interference |
| CN113607730A (en) * | 2021-08-03 | 2021-11-05 | 无锡乾鹏医疗科技有限公司 | Part detection method, device, terminal and readable storage medium |
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Application publication date: 20120215 |