CN104385509A - Laser burr cutting machine and laser burr cutting method - Google Patents
Laser burr cutting machine and laser burr cutting method Download PDFInfo
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- CN104385509A CN104385509A CN201410705360.1A CN201410705360A CN104385509A CN 104385509 A CN104385509 A CN 104385509A CN 201410705360 A CN201410705360 A CN 201410705360A CN 104385509 A CN104385509 A CN 104385509A
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Abstract
The invention discloses a laser burr cutting machine. The laser burr cutting machine comprises a frame, a lifting platform, a lifting mechanism for driving the lifting platform, a rotating platform and a rotating mechanism for driving the rotating platform, wherein both the lifting mechanism and the rotating mechanism are arranged on the frame; a laser head, a beam expander, a galvanometer and a field flattening lens which are sequentially arranged along a transmission direction of laser are fixed on the lifting platform; a light emitting side of the field flattening lens faces the rotating platform, the rotating platform is provided with at least two fixtures, the at least two fixtures move in the same track when the rotating platform rotates, and the light emitting side of the field flattening lens faces one of the at least two fixtures. In the laser burr cutting machine, after a workpiece is cut, the rotating mechanism drives the rotating platform to rotate by a preset angle to drive a next workpiece to move to be below the field flattening lens, so that continuous operation is achieved, and the working efficiency is greatly improved; meanwhile, compared with a sandblasting machine, the laser burr cutting machine is simpler in structure, lower in cost and better in security.
Description
Technical field
The present invention relates to laser cutting machine, particularly relate to a kind of laser trimming machine and laser trimming method.
Background technology
Plastics injecting products is widely used in the plastic shell of the communication apparatus such as mobile phone, laptop computer, and on the product such as micro machine, electrical equipment, electronics, toy, clock and watch, lamp decoration, locomotive.Plastics injection moulding is that a kind of plastics by melting utilize pressure to be injected in mould, obtains the method for workpiece shapes needed for user after cooling forming.The workpiece of gained is exactly often end product, other processing process is no longer needed before using in installation or as final finished, such as, lug boss on workpiece, rib, screw thread, can be shaping in injection-molded process, but due to product structure and injection mo(u)lding characteristic, cause the product after injection mo(u)lding to there is cloak, i.e. burr.Burr on injecting products are unfavorable for the installation of other spare and accessory parts, especially the sensitive electron such as camera, loudspeaker components and parts, therefore, need to remove the burr on injecting products, and traditional approach generally adopts artificial cutter to prune removes, but due to injecting products on market very many, need a large amount of manpower, and quality is uncontrollable, yields is lower.
All the time, in order to enhance productivity and product yields, industry has also attempted a lot of method and apparatus.Be that the high pressure sand grains utilizing sand-blasting machine to spray removes burr, but be not widely accepted due to factors, such as sand-blasting machine is expensive, and sand grains is running stores, and purchase cost is also higher; Secondly when product burr larger thicker time, the removal burr that sandblasting just can not be clean; Sand-blasting machine easily sprays dust again, has the danger of dust explosion.In addition, also have a kind of burr removing polishing machine, although this equipment cost is not high, limitation is existed to special-shaped product processing, and efficiency is not high.
Summary of the invention
The technical problem to be solved in the present invention is to provide the laser trimming machine and laser trimming method that a kind of working (machining) efficiency is high, cost is low, security is good.
For solving the problems of the technologies described above, the present invention adopts following technical scheme.
A kind of laser trimming machine, it includes a frame, one lifting platform, the elevating mechanism of one driving lifting platform, one turntable and one drives the rotating mechanism of turntable, described elevating mechanism and rotating mechanism are all located in frame, described lifting platform is fixed with the laser head that the transmission direction along laser sets gradually, beam expanding lens, galvanometer peace field lens, the light emission side of described flat field mirror is towards turntable, described turntable is provided with at least two fixtures, when described turntable rotates, at least two fixtures move by same track, the light emission side of described flat field mirror is towards one of at least two fixtures.
Preferably, the quantity of described fixture is two, and two fixtures are located at the both sides of turntable symmetry axis respectively, the location swap of two fixtures when turntable rotates 180 °.
Preferably, the two ends of described turntable radial direction are respectively equipped with the first spacing transmitter and the second spacing transmitter, described frame is provided with the first spacing receiver and the second spacing receiver, when one of two fixtures move to below flat field mirror, first spacing transmitter aligns with the first spacing receiver and makes the first spacing receiver export a signal of telecommunication, when another in two fixtures moves to below flat field mirror, the second spacing transmitter aligns with the second spacing receiver and makes the second spacing receiver export a signal of telecommunication.
Preferably, described first spacing transmitter is fixed on the upper surface of turntable, and described second spacing transmitter is fixed on the lower surface of turntable, and described first spacing receiver is located at above the second spacing receiver.
Preferably, described lifting edge of table is provided with support, and described galvanometer is fixed on support, and described flat field mirror is fixed on the light-emitting window place of galvanometer lower end.
A kind of laser trimming method, the method comprises the steps: step S1, and rotating mechanism drives turntable to rotate, and drives a fixture to move to below flat field mirror; Step S2, laser head Emission Lasers bundle, galvanometer operates and orders about laser beam and cuts the workpiece on this fixture by default cutting track; Step S3, after having cut, rotating mechanism drives turntable to rotate, and drives next fixture to move to below flat field mirror.
Preferably, described cutting track comprises mulitpath, and the shape of mulitpath is all identical with the profile of workpiece, and mulitpath is close successively to workpiece main direction by the point of workpiece burr.
Preferably, described cutting track comprises five paths.
Preferably, the focal beam spot diameter d of described laser beam on workpiece is obtained by following formula:
Wherein, f is that flat field mirror focuses on size, and λ is optical maser wavelength, and D is the beam diameter of laser beam after beam expanding lens collimation, M
2for Output of laser square factor.
In laser trimming machine disclosed by the invention, workpiece to be cut is placed on the fixture of turntable, the laser beam that laser head sends enters galvanometer via beam expanding lens, user is by the control to galvanometer, the angle of galvanometer to laser beam is made to do further adjustment, thus the laser beam that flat field mirror goes out can focus on workpiece according to the profile of workpiece, cutting, after a work piece cut completes, rotating mechanism drives turntable to rotate predetermined angle, drive next workpiece movable to the below of flat field mirror, thus achieve and work continuously, substantially increase operating efficiency, simultaneously, sand-blasting machine compared by this laser trimming machine, its structure is simpler, cost is lower, security is better.
Accompanying drawing explanation
Fig. 1 is the structural representation of laser trimming machine of the present invention.
Fig. 2 is the top view of turntable.
Fig. 3 is the schematic diagram of Workpiece structure and cutting track.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in more detail.
The invention discloses a kind of laser trimming machine, shown in composition graphs 1 and Fig. 2, it includes a frame 1, one lifting platform 2, the elevating mechanism 3 of one driving lifting platform 2, the rotating mechanism 5 of one turntable 4 and a driving turntable 4, described elevating mechanism 3 and rotating mechanism 5 are all located in frame 1, described lifting platform 2 is fixed with the laser head 6 that the transmission direction along laser sets gradually, beam expanding lens 7, the peaceful field lens 9 of galvanometer 8, the light emission side of described flat field mirror 9 is towards turntable 4, described turntable 4 is provided with at least two fixtures 40, when described turntable 4 rotates, at least two fixtures 40 move by same track, the light emission side of described flat field mirror 9 is towards one of at least two fixtures 40.
Above-mentioned laser trimming machine, workpiece to be cut is placed on the fixture 40 of turntable 4, the laser beam that laser head 6 sends enters galvanometer 8 via beam expanding lens 7, user is by the control to galvanometer 8, the angle of galvanometer 8 pairs of laser beams is made to do further adjustment, thus the laser beam that flat field mirror 9 penetrates can focus on workpiece according to the profile of workpiece 100, cutting, after a workpiece 100 has cut, rotating mechanism 5 drives turntable 4 to rotate predetermined angle, next workpiece 100 is driven to move to the below of flat field mirror 9, thus achieve and work continuously, substantially increase operating efficiency, simultaneously, sand-blasting machine compared by this laser trimming machine, its structure is simpler, cost is lower, security is better.
In the present embodiment, the quantity of described fixture 40 is two, two fixtures 40 are located at the both sides of turntable 4 symmetry axis respectively, the location swap of two fixtures 40 when turntable 4 rotates 180 °, in actual applications, two fixtures 40 can place differently contoured workpiece 100 respectively, can these two kinds of workpiece 100 corresponding and preset differently contoured cutting track on the industrial computer 15 of laser trimming machine, the cutting track that mainboard 16 is preset according to user on industrial computer 15 and respectively precise cutting is carried out to two kinds of workpiece 100.
As a kind of preferred embodiment, the two ends of described turntable 4 radial direction are respectively equipped with the first spacing transmitter 10 and the second spacing transmitter 11, described frame 1 is provided with the first spacing receiver 12 and the second spacing receiver 13, when one of two fixtures 40 move to below flat field mirror 9, first spacing transmitter 10 aligns with the first spacing receiver 12 and makes the first spacing receiver 12 export a signal of telecommunication, when another in two fixtures 40 moves to below flat field mirror 9, second spacing transmitter 11 aligns with the second spacing receiver 13 and makes the second spacing receiver 13 export a signal of telecommunication.Wherein, described first spacing transmitter 10 and the second spacing transmitter 11 are infrared transmitter, and described first spacing receiver 12 and the second spacing receiver 13 are infrared remote receiver.When fixture 40 aligns with flat field mirror 9, one of two spacing receivers export a signal of telecommunication to mainboard 16, mainboard 16 can control rotating mechanism 5 according to this signal of telecommunication and stop operating, and makes fixture 40 rest on predeterminated position, so that cut the workpiece 100 on fixture 40.
Further, the accuracy of Workpiece fixing is affected in order to avoid there is flase drop between two spacing receivers and two spacing transmitters, described first spacing transmitter 10 is fixed on the upper surface of turntable 4, described second spacing transmitter 11 is fixed on the lower surface of turntable 4, described first spacing receiver 12 is located at above the second spacing receiver 13, and two spacing transmitters are avoided mutually.
In the present embodiment, the solid-state narrow spaces Ultra-Violet Laser head of described laser head 6 to be wavelength be 355nm, described flat field mirror 9 is long-focus flat field mirror, and its focal length is 250mm.The edge of described lifting platform 2 is provided with support 14, and described galvanometer 8 is fixed on support 14, and described flat field mirror 9 is fixed on the light-emitting window place of galvanometer 8 lower end.
Under surface trimming pattern, after fixture puts workpiece well, only need extract hand out and can carry out processing cutting, without the need to Non-follow control processing, save the activity duration, increase work efficiency, meanwhile, in order to ensure safety operation, avoid hindering hand, the mode of Grating examinations can be adopted to ensure that user security operates, when place work piece, if Grating examinations is to having object in blowing district, grating when red, grating sends a signal to mainboard 16 simultaneously, rotating mechanism is stopped operating, and laser instrument quits work; When hand extracts blowing district out, grating green light, grating sends a signal to mainboard 16 simultaneously, and rotating mechanism drives turntable rotate to next fixture and continue operation.
Based on the laser trimming machine of said structure, the present invention also discloses a kind of laser trimming method, and it is characterized in that, the method comprises the steps:
Step S1, rotating mechanism 5 drives turntable 4 to rotate, and drives a fixture 40 to move to below flat field mirror 9;
Step S2, laser head 6 Emission Lasers bundle, galvanometer 8 operates and orders about laser beam and cuts the workpiece 100 on this fixture 40 by default cutting track;
Step S3, after having cut, rotating mechanism 5 drives turntable 4 to rotate, and drives next fixture 40 to move to below flat field mirror 9.
In cutting process, because some position of plastics part burr is very thick, thicker position can reach 0.5mm, if laser beam list ceaselessly cuts on product along same cutting path, easily cause after being cut to certain depth, laser energy transmission is not gone down, thus causes cutting efficiency low and burr cutting is unclean.Shown in composition graphs 1 to Fig. 3, for solving this technical problem, the scheme that the present embodiment adopts is, described cutting track comprises mulitpath 102, the shape of mulitpath 102 is all identical with the profile of workpiece 100, but the size of mulitpath increases gradually or reduces, and namely mulitpath 102 is close successively to workpiece 100 main direction by the point of workpiece 100 burr, further, described cutting track comprises five paths 102.
Please refer to Fig. 3, to cut frame burr in plastic casing, cutting profile is made to burr direction to bias internal 4 times by software offset functions, the distance of each skew focal beam spot size, such cutting profile figure just has five cutting paths, five cutting paths are close gradually to workpiece 100 main direction, first laser is first cutting a road junction near burr head position, afterwards, laser cutting path offsets to workpiece 100 main direction, continue to cut along offset path, due to one otch of cutting before having, laser energy can be conveyed to darker position cutting, in like manner cut along the path of skew to workpiece 100 main direction successively, last cutting path high-energy all on earth, thus excise burr neatly.In addition, also need to observe cutting effect in cutting process, as having burr not excise in certain position or only cutting away part burr, at this moment only on software, the cutting path of relevant position need be moved corresponding distance to burr root, or when certain cutting position exceedes cutting profile and switches to other positions of workpiece 100, only in cutting software, the cutting path of relevant position need be moved corresponding distance to burr direction, and then achieve the flexible adjustment to cutting path.
In said process, offset distance carries out skew adjustment according to spot size, if offset too large, part then after cutting easily produces tomography, not easily cuts off, if skew is too little, then cut overlapping positions too much, laser energy not easily hands on, and causes equally and not easily cuts off, and is not having other positions of the easy cut wound workpiece 100 in deckle-edged place.In order to realize the accurate control to focal beam spot size, in the present embodiment, the focal beam spot diameter d of described laser beam on workpiece 100 is obtained by following formula:
Wherein, f is that flat field mirror focuses on size, and λ is optical maser wavelength, and D is the beam diameter of laser beam after beam expanding lens 7 collimates, M
2for Output of laser square factor.
In laser trimming machine disclosed by the invention and laser trimming method, short pulse duration Ultra-Violet Laser head shoot laser is scanned by cutting path by optical system on product to be cut, workpiece is fixed on twin tong turntable by tool, thus realizes twin tong processing, substantially increases working (machining) efficiency.Meanwhile, the present invention inwardly adopts or to the mode extending out Linear cut, effectively cuts, improve cutting quality to workpiece burr.In addition, this equipment, once purchase, only need be powered, drop into without the need to other cost, greatly reduce product cost, and cut no dust pollution, without dust explosion risk, it has the advantages such as high efficiency, high-quality, low cost and high security compared to existing technologies.
The above is preferred embodiment of the present invention, is not limited to the present invention, all make in technical scope of the present invention amendment, equivalent to replace or improvement etc., all should be included in scope that the present invention protects.
Claims (10)
1. a laser trimming machine, it is characterized in that, include a frame, one lifting platform, the elevating mechanism of one driving lifting platform, one turntable and one drives the rotating mechanism of turntable, described elevating mechanism and rotating mechanism are all located in frame, described lifting platform is fixed with the laser head that the transmission direction along laser sets gradually, beam expanding lens, galvanometer peace field lens, the light emission side of described flat field mirror is towards turntable, described turntable is provided with at least two fixtures, when described turntable rotates, at least two fixtures move by same track, the light emission side of described flat field mirror is towards one of at least two fixtures.
2. laser trimming machine as claimed in claim 1, it is characterized in that, the quantity of described fixture is two, and two fixtures are located at the both sides of turntable symmetry axis respectively, the location swap of two fixtures when turntable rotates 180 °.
3. laser trimming machine as claimed in claim 2, it is characterized in that, the two ends of described turntable radial direction are respectively equipped with the first spacing transmitter and the second spacing transmitter, described frame is provided with the first spacing receiver and the second spacing receiver, when one of two fixtures move to below flat field mirror, first spacing transmitter aligns with the first spacing receiver and makes the first spacing receiver export a signal of telecommunication, when another in two fixtures moves to below flat field mirror, second spacing transmitter aligns with the second spacing receiver and makes the second spacing receiver export a signal of telecommunication.
4. laser trimming machine as claimed in claim 3, it is characterized in that, described first spacing transmitter is fixed on the upper surface of turntable, and described second spacing transmitter is fixed on the lower surface of turntable, and described first spacing receiver is located at above the second spacing receiver.
5. laser trimming machine as claimed in claim 4, it is characterized in that, described first spacing transmitter and the second spacing transmitter are infrared transmitter, and described first spacing receiver and the second spacing receiver are infrared remote receiver.
6. laser trimming machine as claimed in claim 1, it is characterized in that, described lifting edge of table is provided with support, and described galvanometer is fixed on support, and described flat field mirror is fixed on the light-emitting window place of galvanometer lower end.
7. a laser trimming method, is characterized in that, the method comprises the steps:
Step S1, rotating mechanism drives turntable to rotate, and drives a fixture to move to below flat field mirror;
Step S2, laser head Emission Lasers bundle, galvanometer operates and orders about laser beam and cuts the workpiece on this fixture by default cutting track;
Step S3, after having cut, rotating mechanism drives turntable to rotate, and drives next fixture to move to below flat field mirror.
8. laser trimming method as claimed in claim 7, it is characterized in that, described cutting track comprises mulitpath, and the shape of mulitpath is all identical with the profile of workpiece, and mulitpath is close successively to workpiece main direction by the point of workpiece burr.
9. laser trimming method as claimed in claim 8, it is characterized in that, described cutting track comprises five paths.
10. laser trimming method as claimed in claim 9, it is characterized in that, the focal beam spot diameter d of described laser beam on workpiece is obtained by following formula:
Wherein, f is that flat field mirror focuses on size, and λ is optical maser wavelength, and D is the beam diameter of laser beam after beam expanding lens collimation, M
2for Output of laser square factor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410705360.1A CN104385509A (en) | 2014-11-26 | 2014-11-26 | Laser burr cutting machine and laser burr cutting method |
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| CN201410705360.1A CN104385509A (en) | 2014-11-26 | 2014-11-26 | Laser burr cutting machine and laser burr cutting method |
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| CN201410705360.1A Pending CN104385509A (en) | 2014-11-26 | 2014-11-26 | Laser burr cutting machine and laser burr cutting method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127604A (en) * | 2015-09-06 | 2015-12-09 | 深圳英诺激光科技有限公司 | Laser processing system and method |
| CN105904100A (en) * | 2016-05-19 | 2016-08-31 | 深圳市富优驰科技有限公司 | Full-automatic laser flash trimming technology |
| CN106001965A (en) * | 2016-06-30 | 2016-10-12 | 洛阳双瑞精铸钛业有限公司 | Automatic welding device for thin metal plate and thick metal plate |
| CN106079196A (en) * | 2016-06-23 | 2016-11-09 | 凌云光技术集团有限责任公司 | A kind of generation method and device of burr cutting path |
| CN108326437A (en) * | 2018-01-25 | 2018-07-27 | 海宁市锦新轴承有限公司 | A kind of digitlization mold production equipment |
| CN108620631A (en) * | 2018-05-15 | 2018-10-09 | 界首市皖俊轴承有限公司 | A kind of Production of bearing is with being accurately positioned drilling device |
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| CN203683370U (en) * | 2013-08-29 | 2014-07-02 | 武汉帝尔激光科技有限公司 | Automatic system for laser-cutting glass |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127604A (en) * | 2015-09-06 | 2015-12-09 | 深圳英诺激光科技有限公司 | Laser processing system and method |
| CN105904100A (en) * | 2016-05-19 | 2016-08-31 | 深圳市富优驰科技有限公司 | Full-automatic laser flash trimming technology |
| CN106079196A (en) * | 2016-06-23 | 2016-11-09 | 凌云光技术集团有限责任公司 | A kind of generation method and device of burr cutting path |
| CN106001965A (en) * | 2016-06-30 | 2016-10-12 | 洛阳双瑞精铸钛业有限公司 | Automatic welding device for thin metal plate and thick metal plate |
| CN108326437A (en) * | 2018-01-25 | 2018-07-27 | 海宁市锦新轴承有限公司 | A kind of digitlization mold production equipment |
| CN108620631A (en) * | 2018-05-15 | 2018-10-09 | 界首市皖俊轴承有限公司 | A kind of Production of bearing is with being accurately positioned drilling device |
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Address after: 518000 Shenzhen, Nanshan District science and Technology Park, North District, Long Hill Road, No. two, No. 8, Qing Guang photoelectric building, the Office (305) Applicant after: Innovo laser Polytron Technologies Inc Applicant after: Inno Machining Co., Ltd. Address before: 518000 Shenzhen, Nanshan District science and Technology Park, North District, Long Hill Road, No. two, No. 8, Qing Guang photoelectric building, the Office (305) Applicant before: Shenzhen Inno Laser Technology Co., Ltd. Applicant before: Inno Machining Co., Ltd. |
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