CN109685744A - A kind of scanning galvanometer accuracy correcting method - Google Patents
A kind of scanning galvanometer accuracy correcting method Download PDFInfo
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- CN109685744A CN109685744A CN201811653094.7A CN201811653094A CN109685744A CN 109685744 A CN109685744 A CN 109685744A CN 201811653094 A CN201811653094 A CN 201811653094A CN 109685744 A CN109685744 A CN 109685744A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 210000004209 hair Anatomy 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000012805 post-processing Methods 0.000 claims abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/80—Geometric correction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/31—Calibration of process steps or apparatus settings, e.g. before or during manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/49—Scanners
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10004—Still image; Photographic image
- G06T2207/10008—Still image; Photographic image from scanner, fax or copier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses a kind of scanning galvanometer accuracy correcting methods, print circular array in advance on preprepared Standard adjustable board first, carry out cross hairs mark in circular interior；According to central coordinate of circle O conversion cross mark line center O ' coordinate, using vector OO ' as the deviation in the center of circle and cross mark line center；Find a center of circle (n+1, m+1), the deviation coordinate O ' of measure center O, the bias vector OO ' both obtained, post-processing all the points during subtract bias vector OO '；The coordinate at a cross mark line midpoint (n ', m ') is (n ' × d, m ' × d)+OO '+OOnm'；The coordinate at other cross mark line midpoints is successively handled, and calculates and obtains bias vector with the corresponding center of circle；Obtain the matrix table of each cross mark line midpoint coordinates deviation.The present invention solves the problems, such as that scanner scanning image ranging Shi Tidian precision existing in the prior art is insufficient.
Description
Technical field
The invention belongs to metal powder lasers to melt increases material manufacturing technology field, and in particular to a kind of scanning galvanometer precision school
Correction method.
Background technique
Metal powder laser fusing increases material manufacturing technology can shape complexity and the higher metal parts of accuracy.It is existing
Stage metal powder laser fusing increases material manufacturing technology mostly uses galvanometer as light path control equipment.Field lens is as aggregation laser
Equipment there is barrel-type distortion in principle, precision drift can also occur using a period of time after correction is good, need school again
Just.The case where often will appear anamorphose when using scanner scanning image ranging, cause to propose an accuracy decline or correction
Problem on deformation is still had later.High-precision image instrument can solve the problem for precision deficiency that proposes, but inconvenience is in client
Scene uses High-precision image instrument.
Summary of the invention
The object of the present invention is to provide a kind of scanning galvanometer accuracy correcting methods, solve scanning existing in the prior art
The problem of instrument scan image ranging Shi Tidian precision deficiency.
The technical scheme adopted by the invention is that a kind of scanning galvanometer accuracy correcting method, specifically real according to the following steps
It applies:
Step 1 prints circular array in advance on preprepared Standard adjustable board, and circular array is 2n+1 row, 2m+
1 column, n, m are integer, if adjacent two center of circle spacing is d；
Step 2 carries out cross hairs mark in circular interior；
Step 3 sets each center of circle independently justified as O, and cross mark line center is O ', according to central coordinate of circle O conversion cross
Mark line center O ' coordinate, to avoid the error generated during scanner scanning, using vector OO ' as the center of circle and cross mark
The deviation at line center；
Step 4 finds the circle that position is in center, i.e. a center of circle (n+1, m+1) of circular array, if central circular
Coordinate points are (0,0), the deviation coordinate O ' of measure center O, the bias vector OO ' both obtained, post-processing all the points
Bias vector OO ' is subtracted in the process；
Step 5, (n ', m ') a circle for the, central coordinate of circle is (n ' × d, m ' × d), a cross mark of the (n ', m ')
The coordinate at line midpoint is (n ' × d, m ' × d)+OO '+OOnm'；
Step 6, the coordinate for successively handling other cross mark line midpoints, and calculate and obtain bias vector with the corresponding center of circle；?
To the matrix table of each cross mark line midpoint coordinates deviation, and then it is used to carry out field lens correction for drift.
The features of the present invention also characterized in that
N=5 in step 1, m=5.
D=5 in step 1.
The invention has the advantages that a kind of scanning galvanometer accuracy correcting method, carries out school using circular array correcting plate
Just, it is calculated when timing is in scanning, improves computational accuracy, while improving calculating speed.Obtained deviation matrix can be used
It carries out field lens correction for drift, solves the problems, such as to propose a precision at present insufficient, while solving in curstomer's site inconvenience
The problem of being mentioned using High-precision image instrument.
Detailed description of the invention
Fig. 1 is a kind of scanning galvanometer accuracy correcting method flow chart of the present invention；
Fig. 2 is a kind of scanning galvanometer accuracy correcting method Plays correcting plate schematic diagram of the present invention；
Fig. 3 is the Standard adjustable board signal after carrying out cross hairs mark in a kind of scanning galvanometer accuracy correcting method of the present invention
Figure；
Fig. 4 is that (0,0) puts bias vector schematic diagram in coordinate system in a kind of scanning galvanometer accuracy correcting method of the present invention；
Fig. 5 is (n ', m ') point bias vector schematic diagram in a kind of scanning galvanometer accuracy correcting method of the present invention in coordinate system；
Fig. 6 is all coordinate points entirety bias vector schematic diagrames in a kind of scanning galvanometer accuracy correcting method of the present invention.
In figure, 1. Standard adjustable boards.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of scanning galvanometer accuracy correcting method of the present invention, flow chart is as shown in Figure 1, be specifically implemented according to the following steps:
Step 1 prints circular array on preprepared Standard adjustable board 1 in advance, as shown in Fig. 2, circular array
It is arranged for 2n+1 row, 2m+1, n, m are integer, if adjacent two center of circle spacing is d；
Wherein, n=5, m=5, d=5.
Step 2 carries out cross hairs mark in circular interior, as shown in Figure 3；
Step 3 sets each center of circle independently justified as O, and cross mark line center is O ', according to central coordinate of circle O conversion cross
Mark line center O ' coordinate, to avoid the error generated during scanner scanning, using vector OO ' as the center of circle and cross mark
The deviation at line center；
Step 4 finds the circle that position is in center, i.e. a center of circle (n+1, m+1) of circular array, as shown in figure 4,
If central circular coordinate points are (0,0), the deviation coordinate O ' of measure center O obtains the bias vector OO ' of the two, locates later
Bias vector OO ' is subtracted during reason all the points；
Step 5, (n ', m ') a circle for the, as shown in figure 5, its central coordinate of circle is (n ' × d, m ' × d), the (n ', m ')
The coordinate at a cross mark line midpoint is (n ' × d, m ' × d)+OO '+OOnm'；
Step 6, the coordinate for successively handling other cross mark line midpoints, and calculate and obtain bias vector with the corresponding center of circle；?
To the matrix table of each cross mark line midpoint coordinates deviation, as shown in table 1, and then it is used to carry out field lens correction for drift, such as
Shown in Fig. 6.
A kind of scanning galvanometer accuracy correcting method of the present invention, is corrected, on timing side using circular array correcting plate
It scans side to calculate, improves computational accuracy, while improving calculating speed.Obtained deviation matrix can be used to carry out field lens deviation
Correction, solve the problems, such as to propose precision at present insufficient, while solving in curstomer's site High-precision image inconvenient to use
The problem of instrument mentions.
Claims (3)
1. a kind of scanning galvanometer accuracy correcting method, which is characterized in that be specifically implemented according to the following steps:
Step 1 prints circular array in advance on preprepared Standard adjustable board (1), and circular array is 2n+1 row, 2m+1
Column, n, m are integer, if adjacent two center of circle spacing is d；
Step 2 carries out cross hairs mark in circular interior；
Step 3 sets each center of circle independently justified as O, and cross mark line center is O ', according to central coordinate of circle O conversion cross mark
Line center O ' coordinate, to avoid the error generated during scanner scanning, using vector OO ' as the center of circle and cross mark line in
The deviation of the heart；
Step 4 finds the circle that position is in center, i.e. a center of circle (n+1, m+1) of circular array, if central circular coordinate
Point is (0,0), the deviation coordinate O ' of measure center O, the bias vector OO ' both obtained, post-processing all the points process
In subtract bias vector OO '；
Step 5, (n ', m ') a circle for the, central coordinate of circle is (n ' × d, m ' × d), in a cross mark line of the (n ', m ')
The coordinate of point is (n ' × d, m ' × d)+OO '+OOnm'；
Step 6, the coordinate for successively handling other cross mark line midpoints, and calculate and obtain bias vector with the corresponding center of circle；It obtains every
The matrix table of a cross mark line midpoint coordinates deviation, and then be used to carry out field lens correction for drift.
2. a kind of scanning galvanometer accuracy correcting method according to claim 1, which is characterized in that n=5 in the step 1,
M=5.
3. a kind of scanning galvanometer accuracy correcting method according to claim 1, which is characterized in that d=5 in the step 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653094.7A CN109685744B (en) | 2018-12-29 | 2018-12-29 | Scanning galvanometer precision correction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811653094.7A CN109685744B (en) | 2018-12-29 | 2018-12-29 | Scanning galvanometer precision correction method |
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| CN109685744A true CN109685744A (en) | 2019-04-26 |
| CN109685744B CN109685744B (en) | 2023-01-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487180A (en) * | 2019-08-12 | 2019-11-22 | 上海理工大学 | A kind of thermal drift measurement method for scanning galvanometer formula laser-processing system |
| CN111223067A (en) * | 2020-02-21 | 2020-06-02 | 成都工业学院 | Automatic alignment method for processing circular hole of bridge anchorage |
| CN113310672A (en) * | 2021-07-30 | 2021-08-27 | 武汉华工激光工程有限责任公司 | Device and method for detecting repeated positioning precision of galvanometer |
| CN113793313A (en) * | 2021-09-10 | 2021-12-14 | 哈尔滨工业大学 | High-precision tool setting method and device for machining full-surface micro-pit structure of thin-wall spherical shell type micro component |
| CN117359135A (en) * | 2023-12-08 | 2024-01-09 | 迈为技术(珠海)有限公司 | Galvanometer correction method, galvanometer correction device, computer apparatus, storage medium, and program product |
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| JP2007192585A (en) * | 2006-01-17 | 2007-08-02 | Develo:Kk | Method of calibrating and producing survey unit, and method producing of device for performing moving body survey |
| CN107449374A (en) * | 2017-07-05 | 2017-12-08 | 南京航空航天大学 | The vision auxiliary laser galvanometer scanning system and its field calibration method of flexible layout |
| CN108426701A (en) * | 2017-12-27 | 2018-08-21 | 北京空间机电研究所 | A kind of discontinuous stellar camera elements of interior orientation test method of CCD device and system |
-
2018
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Patent Citations (3)
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| JP2007192585A (en) * | 2006-01-17 | 2007-08-02 | Develo:Kk | Method of calibrating and producing survey unit, and method producing of device for performing moving body survey |
| CN107449374A (en) * | 2017-07-05 | 2017-12-08 | 南京航空航天大学 | The vision auxiliary laser galvanometer scanning system and its field calibration method of flexible layout |
| CN108426701A (en) * | 2017-12-27 | 2018-08-21 | 北京空间机电研究所 | A kind of discontinuous stellar camera elements of interior orientation test method of CCD device and system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487180A (en) * | 2019-08-12 | 2019-11-22 | 上海理工大学 | A kind of thermal drift measurement method for scanning galvanometer formula laser-processing system |
| CN110487180B (en) * | 2019-08-12 | 2020-12-25 | 上海理工大学 | Thermal drift measurement method for scanning galvanometer type laser processing system |
| CN111223067A (en) * | 2020-02-21 | 2020-06-02 | 成都工业学院 | Automatic alignment method for processing circular hole of bridge anchorage |
| CN113310672A (en) * | 2021-07-30 | 2021-08-27 | 武汉华工激光工程有限责任公司 | Device and method for detecting repeated positioning precision of galvanometer |
| CN113793313A (en) * | 2021-09-10 | 2021-12-14 | 哈尔滨工业大学 | High-precision tool setting method and device for machining full-surface micro-pit structure of thin-wall spherical shell type micro component |
| CN113793313B (en) * | 2021-09-10 | 2023-12-12 | 哈尔滨工业大学 | High-precision tool setting method and device for machining full-surface micro-pit structure of thin-wall spherical shell type micro-component |
| CN117359135A (en) * | 2023-12-08 | 2024-01-09 | 迈为技术(珠海)有限公司 | Galvanometer correction method, galvanometer correction device, computer apparatus, storage medium, and program product |
| CN117359135B (en) * | 2023-12-08 | 2024-03-12 | 迈为技术(珠海)有限公司 | Galvanometer correction method, galvanometer correction device, computer apparatus, storage medium, and program product |
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