CN205218041U - Laser 3D printer and focusing system thereof - Google Patents

Laser 3D printer and focusing system thereof Download PDF

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Publication number
CN205218041U
CN205218041U CN201520726396.8U CN201520726396U CN205218041U CN 205218041 U CN205218041 U CN 205218041U CN 201520726396 U CN201520726396 U CN 201520726396U CN 205218041 U CN205218041 U CN 205218041U
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CN
China
Prior art keywords
laser
reference substrate
3d
indentation
controller
Prior art date
Application number
CN201520726396.8U
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Chinese (zh)
Inventor
刘建业
胡高峰
梁崇智
徐卡里
高文华
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广东汉邦激光科技有限公司
刘建业
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Priority to CN201520726396.8U priority Critical patent/CN205218041U/en
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Publication of CN205218041U publication Critical patent/CN205218041U/en

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Abstract

The utility model provides a 3D printing focusing system, includes laser optical path system, benchmark base plate, surveys test panel, camera and controller. This laser optical path system is used for exporting a laser beam. This survey test panel assembles on this benchmark base plate. This controller is used for controlling this benchmark base plate and reachs a second place from the step -by -step N of a primary importance, and the benchmark base plate is every once step -by -step, this laser optical path system of this controller control on this surveys test panel an etching nick in order to form a N nick. This camera is used for going up the nick that forms to this survey test panel and shoots. This controller still is arranged in the trend according to each the nick change of this photo, confirms the difference in height of this benchmark base plate and base plate zero -bit. 3D prints the focusing system and has higher focusing efficiency and accuracy. The utility model discloses still relate to a laser 3D printer.

Description

Laser 3D printer and focusing system thereof

Technical field

The utility model relates to 3D laser printing technology, particularly relates to a kind of 3D and prints focusing system.

Background technology

3D printer, also known as three-dimensional printer, is that one utilizes RP technique, based on mathematical model file, adopts moulding material, is constructed the printing device of three-dimensional entity by the mode successively printed.Along with the fast development of 3D printing technique, 3D printer obtains a wide range of applications at product manufacturing industry.

Current is generally laser 3D printer for directly manufacturing the 3D printer of metal function part.Before use, need to focus to the light path system of laser 3D printer, the laser beam exported to enable light path system just in time focuses on finished surface.Existing focus adjustment method is generally undertaken visually observing by field personnel judging and manual adjustments, and this kind of method not only cannot ensure focusing accuracy, and focusing inefficiency.

Utility model content

For the problems referred to above, the purpose of this utility model is to provide efficiently a kind of and accurate 3D to print focusing system.

In addition, another object of the present utility model is also to provide a kind of laser 3D printer using described 3D to print focusing system.

A kind of 3D prints focusing system, comprising:

Laser light path system, for exporting a laser beam;

Reference substrate;

Test board, is assemblied in this reference substrate, and the surface co-planar of the surface of this test board and this reference substrate;

Controller, arrives a second place for controlling this reference substrate from primary importance stepping N time, primary importance and the second place symmetrical relative to substrate zero-bit, each step distance is identical; And the every stepping of reference substrate once, this controller controls this laser light path system and on this test board, etches an indentation to form N number of indentation, and N number of indentation with one heart and equidistantly arrange; Wherein, N be more than or equal to three integer, when this substrate zero-bit refers to the surface co-planar when the surface of this reference substrate and the workbench of this laser 3D printer, the position of this reference substrate; And

Camera, for after this reference substrate completes N stepping, takes pictures to the indentation that this test board is formed, and exports the photo of shooting to this controller;

Wherein, this controller also for according to brightness of indentation each in this photo and the trend of change width, identifies a middle indentation, the difference in height of reference substrate and substrate zero-bit when determining to form this middle indentation according to the position of this middle indentation.

Further, described test board is made up of alumina material, and color is grey black.

Further, the shape of indentation described in each can be the one in square, rectangle, polygon, circle, ellipse, arc.

Further, this laser light path system comprises laser instrument, the first galvanometer, the first scanning mirror, the second galvanometer, the second scanning mirror and field lens; The laser beam that described laser instrument sends focuses on workbench successively after the first scanning mirror, the reflection of the second scanning mirror and the convergence of field lens.

Further, also comprise the first drives structure, be arranged in the moulding cylinder of laser 3D printer; This first drives structure for carrying reference substrate, and drives reference substrate to move do stepping under the control of this controller.

Further, also comprise the second drives structure being connected to this laser light path system, this controller controls this second drives structure driving laser light path system according to this difference in height and moves, and what make this laser beam focuses on this substrate zero-bit.

A kind of laser 3D printer, comprising the workbench for carrying out 3D printing, it is characterized in that: this laser 3D printer also comprises above-mentioned 3D and prints focusing system.

Further, described laser 3D printer also comprises a moulding cylinder, and this 3D prints focusing system and also comprises the first drives structure be arranged in this moulding cylinder; This first drives structure for carrying reference substrate, and drives reference substrate to move do stepping under the control of this controller.

Further, this workbench offers a groove, this moulding cylinder to be arranged at below workbench and to align setting with this groove; This first drives structure is retracted in this moulding cylinder via moving to above workbench and via this groove via this groove for driving reference substrate.

Further, this laser 3D printer also comprises a bracing frame, and this 3D prints focusing system and also comprises the second drives structure that is connected to this bracing frame; This laser light path system is arranged on this bracing frame, and this controller controls the second drives structure and drives this bracing frame to move, thus drives this laser pipe-line system to move.

Compared to prior art, 3D described in the utility model prints focusing system, automatically the stepping controlling reference substrate by controller is moved and the etching of laser light path system, the indentation of Formation rule gradual change, and by automatically identifying the variation tendency of indentation after the taking pictures of camera, find out the difference in height of focal plane position and this focal plane position and substrate zero-bit accordingly, controller self or operating personnel can regulate the position of laser light path system according to this difference in height, reach the object regulated laser beam foucing.Not only increase focusing efficiency, and avoid manually visually observing the error brought, improve the precision of focusing.

Accompanying drawing explanation

Fig. 1 is the structural representation of the laser 3D printer of the utility model better embodiment.

Fig. 2 is the principle schematic of the laser light path system of the 3D of laser shown in Fig. 1 printer.

Fig. 3 is the workflow diagram of the 3D printing focusing system of the utility model better embodiment.

The schematic diagram of the indentation that the test board that Fig. 4 is the 3D of laser shown in Fig. 1 printer is formed.

Main element symbol description

Laser 3D printer 100 Frame 10 Body 11 Workbench 12 Groove 121 Moulding cylinder 13 Bracing frame 14 Laser light path system 20 Laser instrument 21 X galvanometer 22 X scanning mirror 23 Y galvanometer 24 Y scanning mirror 25 Field lens 26 Laser beam 27 Reference substrate 31 Test board 32 First drives structure 33 Loading plate 331 Second drives structure 34 Controller 35 Camera 36

Following detailed description of the invention will further illustrate the utility model in conjunction with above-mentioned accompanying drawing.

Detailed description of the invention

Refer to Fig. 1, the laser 3D printer 100 of the utility model better embodiment comprises frame 10, laser light path system 20 and focusing system.Laser light path system 20 and focusing system (figure does not mark) are all arranged in frame 10.Focusing system is used for focusing to laser light path system 20.

Frame 10 comprises body 11, workbench 12, moulding cylinder 13 and bracing frame 14.Workbench 12 is fixed on body 11.Throughly on workbench 12 offer groove 121, moulding cylinder 13 to be arranged at below workbench 12 and to align setting with groove 121.Bracing frame 14 is assemblied on body 11 movably, for installing laser light path system 20.

Refer to Fig. 2, in the present embodiment, laser light path system 20 is mirror-vibrating laser light path system, and it comprises laser instrument 21, X galvanometer 22, X scanning mirror 23, Y galvanometer 24, Y scanning mirror 25 and field lens 26.The laser beam 27 that laser instrument 21 sends focuses on workbench 12 successively after the reflection of X scanning mirror 23, Y scanning mirror 25 and the convergence of field lens 26.The movement of laser beam 27 on workbench 12 can be controlled by the rotation of control X galvanometer 22 and Y galvanometer 24, thus form Laser Processing path.

Please consult Fig. 1 again, focusing system comprises reference substrate 31, test board 32, first drives structure 33, second drives structure 34, controller 35 and camera 36.

Reference substrate 31 is for assembling test board 32 and driving test board 32 to move.After test board 32 is assemblied in reference substrate 31, the surface of test board 32 and the surface co-planar of reference substrate 31.In the present embodiment, reference substrate 31 offers fitting recess (not shown), and test board 32 is assemblied in this fitting recess.The size of reference substrate 31 is suitable with the size of groove 121.Reference substrate 31 has a substrate zero-bit, when substrate zero-bit refers to the surface co-planar when the surface of reference substrate 31 and workbench 12, and the position of reference substrate 31.

The size of test board 32 and the shaping scope of laser 3D printer 100 are quite or bigger about shaping scope.In the present embodiment, test board 32 is made up of aluminium oxide or other light sensitive materials, and its color is preferably roughly grey black.

First drives structure 33 moves up and down for driving reference substrate 31.First drives structure 33 comprises a loading plate 331, for carrying reference substrate 31.In the present embodiment, first drives structure 31 is arranged in moulding cylinder 13, so, reference substrate 31 and the test board 32 that is fitted thereon can move to above workbench 12 and via groove 121 via groove 121 and be retracted in moulding cylinder 13 under the driving of the first drives structure 33.First drives structure 33 is preferably stepper motor.

Second drives structure 34 moves towards or away from workbench 12 for driving laser light path system 20, thus the focus of the laser beam 27 regulating laser light path system 20 to export.In the present embodiment, the second drives structure 34 to be arranged in frame 10 and to be connected to bracing frame 14.Second drives structure 34 drives laser light path system 20 to move integrally by driving the movement of bracing frame 14.

Controller 35 is for controlling the start of the first drives structure 33, second drives structure 34, camera 36 and laser light path system 20.The control procedure of controller 35 to the first drives structure 33, second drives structure 34, camera 36 and laser light path system 20 will be described in detail in figure 3.

Refer to Fig. 3, the specific works flow process that described 3D prints focusing system is as follows:

Step S1: reference substrate 31 and a test board 32 is provided.Reference substrate 31 has a substrate zero-bit, when this substrate zero-bit refers to the surface co-planar when the surface of this reference substrate and the workbench 12 of this laser 3D printer 100, and the position of reference substrate 31.Test board 32 is assemblied in reference substrate 31, and the surface co-planar of the surface of test board 32 and reference substrate 31.

Step S2: the first drives structure 33 drives reference substrate 31 to move to primary importance under control of the controller 35.

Step S3: the first drives structure 33 drives reference substrate 31 to arrive the second place from primary importance stepping N time under the control of controller 35, primary importance and the second place symmetrical relative to substrate zero-bit, each step distance is identical; And the every stepping of reference substrate 31 once, controller 35 controls laser light path system 20 and on test board 32, etches an indentation to form N number of indentation, and N number of indentation with one heart and equidistantly arrange.N be more than or equal to 3 integer.

Such as, primary importance is the position relative to substrate zero-bit+3mm height, and the second place is the position relative to substrate zero-bit-3mm height.When reference substrate 31 is positioned at primary importance, controller 35 controls laser light path system 20 with the laser beam 27 of the 50W power square indentation L that ablation length of side is Xmm on test board 32 1(as shown in Figure 4), X can be and is greater than any number that zero is less than test board 32 length of side, and such as, X gets 10.Controller 35 controls the first drives structure 33 and drives reference substrate 31 to decline the step distance of 0.1mm subsequently, and controller 35 controls laser light path system 20 on test board 32, etches the square indentation L that a length of side is X+1mm 2, so circulation 60 times, until reference substrate 31 drops to the position of-3mm height, forms N bar indentation L 1, L 2..., L m... L n-1, L n.

In other selectable embodiments, the distance of primary importance and the second place and substrate zero-bit is not limited to the above-mentioned 3mm exemplified, and also can be other suitable distances, such as, can be 4mm or 5mm etc.In addition, each step distance of reference substrate 31 is also not limited to the above-mentioned 0.1mm enumerated, and also can be other suitable step distance, such as 0.2mm or 0.3mm etc.

In other selectable embodiments, primary importance can be the position relative to substrate zero-bit-3mm height, and the second place is the position relative to substrate zero-bit+3mm height, and now, reference substrate 31 is then stepping from lower to upper in etching process.

In other selectable embodiments, on test board 32, the indentation of etching is not limited to the above-mentioned square exemplified, it can be other any suitable shape, such as rectangle, circle, ellipse, polygon or arcs etc., only need to ensure between each indentation equidistantly and arrange with one heart.

In other selectable embodiments, along with the stepping of reference substrate 31 position, on test board 32 formation of each indentation be not limited to above-mentioned exemplify increase successively from inside to outside, also can etch indentation along with the stepping of reference substrate 31 position successively in the mode of ecto-entad.

Step S4: the indentation that controller 35 controls camera 36 pairs of test boards 32 are formed is taken pictures, and receive the photo of camera 36 output.

Step S5: controller 35, according to the trend of each indentation change in photo, identifies a middle indentation, and the position of reference substrate 31 and the difference in height of now reference substrate 31 and substrate zero-bit when determining to form this middle indentation according to the position of this middle indentation.

Be specially, controller 35, according to the brightness of each indentation and change width trend, identifies this middle indentation; According to Formation rule (such as etching still ecto-entad from inside to outside successively to etch successively) and this middle indentation position between each indentation of the stepping rule (the such as still stepping from lower to upper of stepping from top to bottom) of this reference substrate 31, each indentation, the position of reference substrate 31 when can judge to form this middle indentation.

The laser beam 27 exported due to laser light path system 20 only has a focal plane, and when the surface of test board 32 is just in time positioned at this focal plane, the indentation that laser beam 27 etches shows as bright and thin (as the L in Fig. 4 relative to other indentations m), indentation namely.And when test board 32 is not in the focal plane of laser beam 27, the indentation that laser beam 27 etches to increase and dimmed gradually and broaden (as the L in Fig. 4 along with test board 32 and the distance of focal plane 2and L n-1), until become indistinct (as the L in Fig. 4 1and L n).Therefore, by brightness and the change width trend of more each indentation, then can find out this middle indentation, and find out accordingly formed in the middle of indentation time reference substrate 31 and test board 32 relative to the position of substrate zero-bit, when being positioned at this position, reference substrate 31 and test board 32 are just in time positioned on the focal plane of the laser beam 27 that this laser light path system 20 exports.

Step S6: controller 35 is according to the height of the corresponding adjustment laser light path system 20 of this difference in height regulable control second drives structure 34, thus the focus of the laser beam 27 that laser light path system 20 is exported is positioned at substrate zero-bit.

Be specially, the difference in height when forming this middle indentation between the position of reference substrate 31 and this substrate zero-bit be on the occasion of, then controller 35 controls laser light path system 20 and to decline distance corresponding to the value of this difference in height; Difference in height when forming this middle indentation between the position of reference substrate 31 and this substrate zero-bit is negative value, then controller 35 controls laser light path system 20 and to rise distance corresponding to the value of this difference in height.Such as, when forming this middle indentation, reference substrate 31 is+1mm relative to the position of substrate zero-bit, then control its 35 control, second drives structure 34 driving laser light path system 20 and decline 1mm highly; When forming this middle indentation, reference substrate 31 be-1mm relative to the position of substrate zero-bit, then controller 35 controls the second drives structure 34 driving laser light path system 20 and rises 1mm highly.

Step S7: repeat step S2-S5, and judge whether this difference in height is zero, and if so, then flow process terminates; Otherwise return step S6.

3D of the present utility model prints focusing system, automatically the stepping controlling reference substrate 31 by controller 35 is moved and the etching of laser light path system 20, the indentation of Formation rule gradual change, and by automatically identifying the variation tendency of indentation after the taking pictures of camera 36, find out focal plane position accordingly.Not only increase focusing efficiency, and avoid manually visually observing the error brought, improve the precision of focusing.In addition, controlled 35 also control laser light path system 20 position adjustments according to this difference in height, reach the object of automatic focusing, omnidistance prosthetic participates in, and realizes focusing automation.

Be appreciated that in another embodiment of the utility model, to the adjustment of the position of laser light path system 20, also can adopt manual mode.This difference in height exports after going out the difference in height of reference substrate and substrate zero-bit according to the position judgment of middle indentation by controller 35.Such as, this difference in height can be exported to display display or notify in the mode that sound is reported.Operating personnel can the position of manual adjustments laser light path system 20 according to this difference in height, thus the focal position of adjustment laser beam 27, make this laser beam 27 focus on substrate zero-bit.

Those skilled in the art will be appreciated that; above embodiment is only used to the utility model is described; and be not used as restriction of the present utility model; as long as within spirit of the present utility model, the suitable change do above embodiment and change all drop within the claimed scope of the utility model.

Claims (10)

1. 3D prints a focusing system, and it is characterized in that, this system comprises:
Laser light path system, for exporting a laser beam;
Reference substrate;
Test board, is assemblied in this reference substrate, and the surface co-planar of the surface of this test board and this reference substrate;
Controller, arrives a second place for controlling this reference substrate from primary importance stepping N time, primary importance and the second place symmetrical relative to substrate zero-bit, each step distance is identical; And the every stepping of reference substrate once, this controller controls this laser light path system and on this test board, etches an indentation to form N number of indentation, and N number of indentation with one heart and equidistantly arrange; Wherein, N be more than or equal to three integer, when this substrate zero-bit refers to the surface co-planar when the surface of this reference substrate and the workbench of a laser 3D printer, the position of this reference substrate; And
Camera, for after this reference substrate completes N stepping, takes pictures to the indentation that this test board is formed, and exports the photo of shooting to this controller;
Wherein, this controller also for according to brightness of indentation each in this photo and the trend of change width, identifies a middle indentation, the difference in height of reference substrate and substrate zero-bit when determining to form this middle indentation according to the position of this middle indentation.
2. 3D as claimed in claim 1 prints focusing system, and it is characterized in that: described test board is made up of alumina material, color is grey black.
3. 3D as claimed in claim 1 prints focusing system, it is characterized in that: the shape of indentation described in each is the one in square, rectangle, polygon except square and rectangle, circle, ellipse, arc.
4. 3D as claimed in claim 1 prints focusing system, it is characterized in that: this laser light path system comprises laser instrument, the first galvanometer, the first scanning mirror, the second galvanometer, the second scanning mirror and field lens; The laser beam that described laser instrument sends focuses on workbench successively after the first scanning mirror, the reflection of the second scanning mirror and the convergence of field lens.
5. 3D as claimed in claim 1 prints focusing system, it is characterized in that: also comprise the first drives structure, is arranged in the moulding cylinder of laser 3D printer; This first drives structure for carrying reference substrate, and drives reference substrate to move do stepping under the control of this controller.
6. 3D as claimed in claim 1 prints focusing system, it is characterized in that: also comprise the second drives structure being connected to this laser light path system, this controller controls this second drives structure driving laser light path system according to this difference in height and moves, and makes this laser beam focus in this substrate zero-bit.
7. a laser 3D printer, comprising the workbench for carrying out 3D printing, it is characterized in that: the 3D that this laser 3D printer also comprises described in any one of claim 1-4 prints focusing system.
8. laser 3D printer as claimed in claim 7, is characterized in that: described laser 3D printer also comprises a moulding cylinder, and this 3D prints focusing system and also comprises the first drives structure be arranged in this moulding cylinder; This first drives structure for carrying reference substrate, and drives reference substrate to move do stepping under the control of this controller.
9. 3D printer as claimed in claim 8, is characterized in that: this workbench offers a groove, and this moulding cylinder to be arranged at below workbench and to align setting with this groove; This first drives structure is retracted in this moulding cylinder for driving reference substrate to move to above workbench and via this groove via this groove.
10. 3D printer as claimed in claim 7, is characterized in that: this laser 3D printer also comprises a bracing frame, and this 3D prints focusing system and also comprises the second drives structure that is connected to this bracing frame; This laser light path system is arranged on this bracing frame, and this controller controls the second drives structure and drives this bracing frame to move, thus drives this laser light path system to move.
CN201520726396.8U 2015-09-18 2015-09-18 Laser 3D printer and focusing system thereof CN205218041U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105935769A (en) * 2016-07-07 2016-09-14 四川三阳永年增材制造技术有限公司 Laser-cladding etching preparation method for 3D-printing formed part
CN106182779A (en) * 2016-08-25 2016-12-07 佛山市南海中南机械有限公司 The focal plane correcting unit of a kind of 3D printer and bearing calibration thereof
CN106541132A (en) * 2015-09-18 2017-03-29 广东汉邦激光科技有限公司 Laser 3D printing machine and its focusing system and method
CN106626848A (en) * 2016-08-31 2017-05-10 广州创乐激光设备有限公司 3D laser marking method for deep hole structure provided on to-be-marked object
CN108723365A (en) * 2018-03-15 2018-11-02 大族激光科技产业集团股份有限公司 Burnt method and system are looked in a kind of laser 3D printing automatically

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106541132A (en) * 2015-09-18 2017-03-29 广东汉邦激光科技有限公司 Laser 3D printing machine and its focusing system and method
CN105935769A (en) * 2016-07-07 2016-09-14 四川三阳永年增材制造技术有限公司 Laser-cladding etching preparation method for 3D-printing formed part
CN105935769B (en) * 2016-07-07 2017-11-28 四川三阳激光增材制造技术有限公司 A kind of laser melting coating for 3D printing drip molding etches preparation method
CN106182779A (en) * 2016-08-25 2016-12-07 佛山市南海中南机械有限公司 The focal plane correcting unit of a kind of 3D printer and bearing calibration thereof
CN106626848A (en) * 2016-08-31 2017-05-10 广州创乐激光设备有限公司 3D laser marking method for deep hole structure provided on to-be-marked object
CN106626848B (en) * 2016-08-31 2018-12-07 广州创乐激光设备有限公司 The 3D laser marking method of deep-hole structures mark on a kind of pair of mark object
CN108723365A (en) * 2018-03-15 2018-11-02 大族激光科技产业集团股份有限公司 Burnt method and system are looked in a kind of laser 3D printing automatically

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Effective date of registration: 20170613

Address after: 528400 B factory building 1F, 32 Jianye Road, Torch Development Zone, Guangdong, Zhongshan

Co-patentee after: Guangdong Han Tang Rapid Manufacturing Application Technology Research Institute Co Ltd

Patentee after: GUANGDONG HANBANG 3D TECHNOLOGY CO., LTD.

Address before: Six District, Guangdong City, Zhongshan Province Torch Development Zone, No. 8 Min Min Road, building A

Co-patentee before: Liu Jianye

Patentee before: GUANGDONG HANBANG 3D TECHNOLOGY CO., LTD.

TR01 Transfer of patent right