CN103394807B - Utilize Laser edge cutting to improve metal cladding deposition and increase method and the device of the material accuracy of manufacture - Google Patents
Utilize Laser edge cutting to improve metal cladding deposition and increase method and the device of the material accuracy of manufacture Download PDFInfo
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Abstract
The invention discloses a kind of method utilizing Laser edge cutting to improve the metal cladding deposition increasing material accuracy of manufacture and device, the method includes: 1) metal drop deposition ground floor: utilize the side that ground floor is deposited metal by laser to carry out machining；2) the metal drop deposition second layer: utilize the side that the second layer is deposited metal by laser to carry out machining；3) metal drop deposition n-th layer: utilize the side that n-th layer is deposited metal by laser to carry out machining；4) until metal drop deposition is complete and utilizes laser that the side of last layer of deposition metal is carried out machining, to improve the forming accuracy of metal cladding deposition.The present invention adopts the mode that Laser edge cuts that process flexibility can be made high, constant product quality, and heat affected area is little, following process amount is little, it is effectively improved the precision machined precision of micromechanics and efficiency, is effectively improved the probability of the batch production of micromechanical parts, reduces processing cost.
Description
Technical field
The invention belongs to precision processing technology field, relate to a kind of method that metal cladding deposition increases the material accuracy of manufacture that improves, especially a kind of method utilizing Laser edge cutting raising metal cladding deposition to increase the material accuracy of manufacture.
Background technology
At present, lot of domestic and international research institution, such as MicroFab commercial company of the U.S., University of Toronto and domestic Northwestern Polytechnical University, the Central China University of Science and Technology etc., droplet ejection mechanism is concentrated mainly on for the research of metal droplet forming technique, type of drive selects and the aspect such as Warm status analysis of microdroplet flight course.And it is less for how ensureing droplet deposition precision aspect research.
The precision of product, raw-material performance and working (machining) efficiency are three key factors of restriction microdroplet forming technology and application thereof.In fusion sediment process, because complicated Three-dimension process must be converted into the superposition of a series of simple two dimension processing, so, formed product precision depends primarily on the machining accuracy on two dimension X Y plane and a series of superposition precision in height Z-direction.The system itself shaped from fusion sediment considers, is fully able to the movement position precision controlling in tri-directions of X, Y, Z in higher level, so, consider theoretically to obtain high-precision prototype.But, the factor affecting the final precision of formed product is more than the precision of microdroplet forming machine itself, also has other factor, and these factors are more wayward.It is an integrated manufacturing system relating to the factors such as Machine Design manufacture, CAD software, numerical control, material, forming parameters and product post processing that droplet deposition shapes, each link is all likely to result in the generation of some errors, and this will have a strong impact on the precision of fusion sediment formed product.
The present invention mainly improves the precision of microdroplet product from the viewpoint of microfabrication.
In machinery manufacturing industry, the processing method adopted for a long time is to subtract material autofrettage (SubtractiveManufacturing), namely progressively excise, from bigger blank, the method that unusable material makes workpiece with cutter, the cutting working methods such as traditional car, milling, plane, brill, mill, and the spark-erosion sinking in modern times broadly falls into cut and subtracts material manufacture.
Laser micro-machining technology is to grow up at the beginning of the 90%'s of last century, mainly there are laser-induced thermal etching processing, laser chemistry auxiliary micro Process etc. that laser beam and anisotropic etching combine, belong to contactless processing, energy height, and the energy of laser beam and translational speed thereof are all adjustable, the multiple processing of various metals, nonmetal and high rigidity, high fragility, materials with high melting point can be realized, without " cutter " abrasion in laser processing procedure, act on workpiece without " cutting force ".Laser beam energy density is high, and process velocity is fast, and is partial operation, non-laser irradiated site is not affected or affects minimum.Therefore, its heat affected area is little, and workpiece thermal deformation is little, and following process amount is little.Its superiority is that laser instrument is commercially available, it is easy to meet processing conditions, and development prospect is had an optimistic view of.
Traditional drop cutting adopts diamond saw to carry out machine cuts, and its shortcoming is exactly that drop can not be too thin, and the material of some drop is very crisp, is easy to break during cutting, is also easy to perilesional element, and when cutting, diamond saw blade is also easily impaired.Joint-cutting is narrow, heat affected area is little, efficiency is high, the processing characteristic of trimming mechanical stress to adopt cut to have, and can solve these problems easily.
In sum, cut is the dot projection surface to cut material utilizing laser beam to form high power density after lens focus, thickness direction at material quickly forms a very narrow and small melted capillary channel, by the laser beam after fixing material surface moves focusing, complete the cutting and separating to material.Cut obtains increasingly using widely because of its advantage such as use scope is wide, process velocity is high, joint-cutting is narrow, facet roughness is low, processing flexibility is good.By combining with numerical control system, laser beam has unlimited shape cutting ability, and cutting track amendment is convenient.Cut has been widely used in the industrial departments such as automobile, rolling stock manufacture, aviation, chemical industry, light industry, electrical equipment and electronics, oil and metallurgy.
In order to realize the motility of laser three-D processing, three-dimensional laser processing must adopt moving optical system.At present, conventional high-power industrial laser mainly has three kinds: CO2Laser instrument, Nd:YAG laser instrument and optical fiber laser.Modern high power laser-processing system includes Optical Maser System, transmission laser system, and processing monitoring system etc., only each system is worked in coordination, and could constitute complete engineering system of processing.
Summary of the invention
It is an object of the invention to the shortcoming overcoming above-mentioned prior art, a kind of method utilizing Laser edge cutting to improve the metal cladding deposition increasing material accuracy of manufacture and device are provided, it adopts the mode that Laser edge cuts to increase the material accuracy of manufacture in order to improve metal cladding deposition, process flexibility can be made high, constant product quality, heat affected area is little, and workpiece thermal deformation is little.
It is an object of the invention to be achieved through the following technical solutions:
This method utilizing Laser edge cutting to improve the metal cladding deposition increasing material accuracy of manufacture, comprises the following steps:
1) metal drop deposition ground floor, utilizes the side that ground floor is deposited metal by laser to carry out machining；
2) the metal drop deposition second layer, utilizes the side that the second layer is deposited metal by laser to carry out machining；
3) metal drop deposition n-th layer, utilizes the side that n-th layer is deposited metal by laser to carry out machining, and wherein N is the natural number more than 2；
4) until metal drop deposition is complete and utilizes laser that the side of last layer of deposition metal is carried out machining, to improve the forming accuracy of metal cladding deposition.
The present invention also proposes a kind of device realizing said method: include casing 11, is provided with laser instrument 10, substrate 8, high-temperature cabinet 3 and absorption platform 9 in casing 11；Described laser instrument 10 is arranged on the side of absorption platform 9, and described substrate 8 is arranged on absorption platform 9, and described high-temperature cabinet 3 is fixed on the top of absorption platform 9 by hanging；Being fixed with wire feeder 1 on the upper end cover of described casing 11, tinsel 2 is sent in the high-temperature cabinet 3 in casing 11 by described wire feeder 1.
It is provided with adding described tinsel 2 heater of heat fusing in above-mentioned high-temperature cabinet 3.
Above-mentioned absorption platform 9 is moveable platform.
The upper end of above-mentioned high-temperature cabinet 3 is provided with into a hole, offers nozzle bottom it.
The method have the advantages that
The present invention utilizes Laser edge cutting to improve method and the device of the metal cladding deposition increasing material accuracy of manufacture, it is utilize Laser edge cutting to improve the method that metal cladding deposition increases the material accuracy of manufacture, its process flexibility is high, owing to adopting cut so that constant product quality, heat affected area is little, workpiece thermal deformation is little, and following process amount is little, is effectively improved the precision machined precision of micromechanics and efficiency, it is effectively improved the probability of the batch production of micromechanical parts, reduces processing cost.
Accompanying drawing explanation
Fig. 1 is the apparatus structure schematic diagram that the present invention relates to.
Wherein: 1 is wire feeder；2 is tinsel；3 is high-temperature cabinet；4 is protective gas；5 is deposit n-th layer；6 deposit metal for the second layer；7 deposit metal for ground floor；8 is substrate；9 is absorption platform；10 is laser instrument；11 is casing.
Detailed description of the invention
It is further elucidated with the present invention, it should be understood that following detailed description of the invention is merely to illustrate the present invention rather than restriction the scope of the present invention below in conjunction with accompanying drawing.It should be noted that the word "front", "rear" of middle use is described below, direction that "left", "right", "up" and "down" refer in accompanying drawing, word " interior " and " outward " refer respectively to the direction towards or away from particular elements geometric center.
As shown in Figure 1, Laser edge cutting is utilized to improve the method that metal cladding deposition increases the material accuracy of manufacture, comprise the steps: a, metal drop deposition ground floor (in figure ground floor deposition metal 7), utilize the side that ground floor is deposited metal by laser to carry out machining；B, the metal drop deposition second layer (in figure second layer deposition metal 6), utilizes the side that the second layer is deposited metal by laser to carry out machining；C, metal drop deposition n-th layer, wherein N is the natural number more than 2, utilizes the side that n-th layer is deposited metal by laser to carry out machining；D, repetition above step, until metal drop deposits complete (namely deposit reaches the thickness of setting) and utilizes laser that the side of last layer of deposition metal is carried out machining.The method utilizing Laser edge cutting to improve the metal cladding deposition increasing material accuracy of manufacture disclosed by the invention, it is effectively improved the precision machined precision of micromechanics and efficiency, reproducible, laser power and energy density are moderate, do not produce nodularization or splash phenomena, good quality of product, is conducive to improving the quality of product and reducing processing cost, and is advantageously implemented the batch production of micromechanical parts.
In order to realize above method, the present invention proposes a kind of device realizing the method, as shown in Figure 1: this device includes casing 11, is provided with laser instrument 10, substrate 8, high-temperature cabinet 3 and absorption platform 9 in casing 11；Described laser instrument 10 is arranged on the side of absorption platform 9, and described substrate 8 is arranged on absorption platform 9, and described high-temperature cabinet 3 is fixed on the top of absorption platform 9 by hanging；Being fixed with wire feeder 1 on the upper end cover of described casing 11, tinsel 2 is sent in the high-temperature cabinet 3 in casing 11 by described wire feeder 1.It is provided with adding described tinsel 2 heater of heat fusing in high-temperature cabinet 3.Absorption platform 9 is moveable platform.The upper end of high-temperature cabinet 3 is provided with into a hole, offers nozzle bottom it.
Specific embodiment of the invention process is as follows:
Such as Fig. 1, in whole forming process, tinsel 2 is entered by wire feeder 1 to be had after the high-temperature cabinet 3 in a hole, carry out fusing and form molten drop, by the nozzle bottom high-temperature cabinet 3, the drop of ejection drops to downwards the upper surface of substrate 8 with certain speed v, when deposit one layer obtain ground floor deposition metal 7 after, the side of ground floor deposition metal 7 is carried out machining by laser instrument 10.By regulating laser instrument 10 and absorption platform 9 thus realizing laser instrument 10 and can moving in the x, y, and z directions.The degree of depth of processing is changed by regulating Z-direction.The displacement of workpiece is regulated and controled, so that difform deposition metal to be cut at X and Y-direction.The only displacement of Synchronization Control laser beam and the rotation of workpiece or movement, makes to burn cutting by forming line, being formed of a wire face, deposit one layer, cutting one layer, thus realizing the processing of various pass and geometric cross section.Coordinating workpiece displacement to regulate, laser beam also to carry out strengthening the modulation of light beam power at any time.Repeat this operation and can process the ground floor deposition metal 7 that obtains meeting the requirements, then pass through and regulate the side that ground floor deposits metal 7 by laser instrument 10 and absorption platform 9 and carry out machining；It is deposited again after processing, obtains second layer deposition metal 6, carry out machining again through regulating laser instrument 10 and absorption platform 9 side to second layer deposition metal 6；Substrate often deposits one layer, by adjustment laser instrument 10 and absorption platform 9, the side of this layer will be carried out machining；Until the side of all layers has been carried out machining, obtain satisfactory finished product.The synchronized Coordinative Control with optics of this series mechanical, the particular/special requirement laser machined just.The method is adopted to substantially increase forming accuracy and surface roughness.The method utilizing Laser edge cutting to improve the metal cladding deposition increasing material accuracy of manufacture disclosed by the invention, process flexibility is high, constant product quality, heat affected area is little, workpiece thermal deformation is little, and following process amount is little, is effectively improved the precision machined precision of micromechanics and efficiency, it is effectively improved the probability of the batch production of micromechanical parts, reduces processing cost.
Claims (2)
1. one kind utilizes Laser edge cutting to improve the method that metal cladding deposition increases the material accuracy of manufacture, it is characterised in that comprise the following steps:
1) metal drop deposition ground floor, utilizes the side that ground floor is deposited metal by laser to carry out machining；
2) the metal drop deposition second layer, utilizes the side that the second layer is deposited metal by laser to carry out machining；
3) metal drop deposition n-th layer, utilizes the side that n-th layer is deposited metal by laser to carry out machining, and wherein N is the natural number more than 2；
4) until metal drop deposition is complete and utilizes laser that the side of last layer of deposition metal is carried out machining, to improve the forming accuracy of metal cladding deposition.
2. the device realizing method described in claim 1, it is characterized in that, including casing (11), in casing (11), it is provided with laser instrument (10), substrate (8), high-temperature cabinet (3) and absorption platform (9)；Described laser instrument (10) is arranged on the side of absorption platform (9), described substrate (8) is arranged on absorption platform (9), and described high-temperature cabinet (3) is fixed on the top of absorption platform (9) by suspension；Being fixed with wire feeder (1) on the upper end cover of described casing (11), tinsel (2) is sent in the high-temperature cabinet (3) in casing (11) by described wire feeder (1)；It is provided with adding described tinsel (2) heater of heat fusing in described high-temperature cabinet (3)；Described absorption platform (9) is moveable platform；It is provided with into a hole in the upper end of described high-temperature cabinet (3), bottom it, offers nozzle；
After tinsel (2) enters, by wire feeder (1), the high-temperature cabinet (3) having into a hole, carry out fusing and form molten drop, nozzle by high-temperature cabinet (3) bottom, the drop of ejection drops to downwards the upper surface of substrate (8) with certain speed v, when deposited one layer obtain ground floor deposition metal (7) after, the side that ground floor is deposited metal (7) by laser instrument (10) carries out machining；By regulating laser instrument (10) and absorption platform (9) thus realizing laser instrument (10) and moving in the x, y, and z directions；The degree of depth of processing is changed by regulating Z-direction；The displacement of workpiece is regulated and controled, so that difform deposition metal to be cut at X and Y-direction；The only displacement of Synchronization Control laser beam and the rotation of workpiece or movement, makes to burn cutting by forming line, being formed of a wire face, deposit one layer, cutting one layer, thus realizing the processing of various pass and geometric cross section；Coordinating workpiece displacement to regulate, laser beam also to carry out strengthening the modulation of light beam power at any time；Repeat this operation can process obtain satisfactory ground floor deposition metal (7), then pass through regulate laser instrument (10) and absorption platform (9) to ground floor deposition metal (7) side carry out machining；It is deposited again after processing, obtains second layer deposition metal (6), carry out machining again through regulating laser instrument (10) and absorption platform (9) side to second layer deposition metal (6)；Substrate often deposits one layer, by adjustment laser instrument (10) and absorption platform (9), the side of this layer will be carried out machining；Until the side of all layers has been carried out machining, obtain satisfactory finished product.
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| CN103978214B (en) * | 2014-05-09 | 2015-10-28 | 西安交通大学 | A kind of gas atomization metal drop shaped device and forming method thereof |
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| US10894395B2 (en) | 2018-08-02 | 2021-01-19 | Ford Motor Company | Methods for making 3D parts using composite based additive manufacturing with perforated sheets and parts formed therefrom |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1637274A1 (en) * | 2004-09-16 | 2006-03-22 | Rolls-Royce Plc | Forming structures by laser deposition |
| CN101294282A (en) * | 2007-04-25 | 2008-10-29 | 陈培锋 | Novel method for continuously casting crystallizer copper metallic face coating |
| CN101885063A (en) * | 2010-08-09 | 2010-11-17 | 东莞理工学院 | The laser cladding forming method of laser cladding forming equipment and a kind of metal parts |
| CN102896430A (en) * | 2012-08-29 | 2013-01-30 | 肖和平 | Laser processing method of semiconductor materials |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112009005060B4 (en) * | 2009-07-10 | 2017-10-19 | Mitsubishi Electric Corp. | Laser processing method and laser processing apparatus |
| KR101097173B1 (en) * | 2009-09-04 | 2011-12-22 | 신한다이아몬드공업 주식회사 | Cutting/Polishing Tool And Manufacturing Method Thereof |
-
2013
- 2013-07-19 CN CN201310303998.8A patent/CN103394807B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1637274A1 (en) * | 2004-09-16 | 2006-03-22 | Rolls-Royce Plc | Forming structures by laser deposition |
| CN101294282A (en) * | 2007-04-25 | 2008-10-29 | 陈培锋 | Novel method for continuously casting crystallizer copper metallic face coating |
| CN101885063A (en) * | 2010-08-09 | 2010-11-17 | 东莞理工学院 | The laser cladding forming method of laser cladding forming equipment and a kind of metal parts |
| CN102896430A (en) * | 2012-08-29 | 2013-01-30 | 肖和平 | Laser processing method of semiconductor materials |
Non-Patent Citations (2)
| Title |
|---|
| 基于单元生死技术的微熔滴沉积成形温度场模拟与试验研究;晁艳普，齐乐华，钟宋义等;《稀有金属材料与工程》;20130418;第42卷(第2期);正文第1-2节 * |
| 铝合金P-MIG电弧快速成型的熔滴过渡研究;符卫;《中国优秀硕士学位论文全文数据库-工程科技Ⅰ辑》;20090115;正文第9页图2-1 * |
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Inventor after: Lu Bingheng Inventor after: Wei Zhengying Inventor after: Li Suli Inventor after: Wang Jijie Inventor before: Lu Bingheng Inventor before: Li Suli Inventor before: Zhang Anfeng Inventor before: Wang Jijie |
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Effective date of registration: 20210106 Address after: 221600 east of Hanxing road and south of Kunming Road, Peixian Economic Development Zone, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Zhonglun Photovoltaic Material Co.,Ltd. Address before: 710049 No. 28 West Xianning Road, Shaanxi, Xi'an Patentee before: XI'AN JIAOTONG University |