CN100450695C - Method for processing mould surface by using laser - Google Patents
Method for processing mould surface by using laser Download PDFInfo
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- CN100450695C CN100450695C CNB200610145388XA CN200610145388A CN100450695C CN 100450695 C CN100450695 C CN 100450695C CN B200610145388X A CNB200610145388X A CN B200610145388XA CN 200610145388 A CN200610145388 A CN 200610145388A CN 100450695 C CN100450695 C CN 100450695C
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Abstract
A method using laser to machine the surface of die features that a group of focus-variable lenses is arranged in the front of a group of laser devices for speeding up the movement of focused laser point, the curvature of the surface to be machined is calculated by computer for controlling the laser machining parameters, and the machining and polishing are included.
Description
Technical field
The present invention relates to a kind of method of processing mould surface by using laser, be meant a kind of one group of pancratic lens set of optical profile type that is provided with in laser group the place ahead especially, utilize optical zoom to reach the method for rapid adjustment laser focal in order to the processing mold surface.
Background technology
Laser processing technology is to divide into 2 kinds approximately at present, and one is carbon dioxide laser (being called for short CO2), generally is applied to the processing of nonmetal mould.Another then is applicable to the processing of metal die for refined gram laser instrument (YAG).
With refined gram laser instrument (YAG), its control machining state is the basic parameter that depends on laser power (%), laser frequency (kHz) and carving speed (mm/s), is controlled the condition of Laser Processing by above-mentioned three parameters.
And the existing mold Surface Machining smoothly (please be joined shown in Figure 1 for its die surface is leveled off to, because of its surface of mould is rough surface under high power is amplified), so that the product that is processed can't reach smooth effect, the focus of its laser is a fixed value so though applicating laser technology is processed, if will on curved surface, process and then be necessary for variable-focus, but prior art system drives workbench with mechanical type and moves up and down (generally claiming the Z axle), but it is slow with its speed of mode that machinery drive workbench moves up and down, and the surface that can make processing presents irregular phenomenon, so that can't reach precision machined effect.
Existing in addition laser processing technology except that above-mentioned processing place can't as expect smooth, though its grinding tool that processes is better than coarse processing, but can't present the processing method of more variation, make its surface of product of producing change too dullness indirectly, and be discontented with by consumer and manufacturer with grinding tool.
Summary of the invention
Main purpose of the present invention is to provide a kind of method of processing mould surface by using laser, be meant and be provided with one group of pancratic lens set of optical profile type in laser group the place ahead, utilize optical zoom to reach the processing mode of rapid adjustment laser focal, move the processing action that can't accurately cooperate laser group to improve prior mechanical in order to the processing mold surface.
Another object of the present invention is to provide a kind of method of processing mould surface by using laser, before processing, need to calculate the variable quantity that it cuts off the curvature of area and then can learn laser focal on to be processed surface via computer, make it can accurately control laser processing parameter, to reach the precision machined purpose of die surface.
A further object of the present invention is to provide a kind of method of processing mould surface by using laser, remove and polish procedure twice via material, part after the processing is merged with matsurface produce designed floral designs, and can make its processing place present the effect of similar polishing, so that the product surface that is produced after this mould mold pressing can present the different variations or the effect of refraction.
In order to achieve the above object, the present invention utilizes optical zoom to move to reach the method on processing mold surface, and it includes the following step:
(a) calculate the curvature of to be processed surface area with computer, in order to obtain the running parameter of laser focal;
(b) utilize the adjustment of pancratic lens set to change laser focal fast, remove processing to carry out to be processed surface;
(c), make the heat energy of laser remove the material on to be processed surface with adjusting the laser power parameter;
(d) treat above-mentioned machining after, remeasure its frequency and power according to original machining path;
(e) reduce its laser power parameter and carry out repeatedly surface of the work polishing processing again.
Described laser group is refined gram laser instrument.
Described pancratic lens set is the camera lens that can carry out optical zoom.
The technique effect that the present invention produced is, remove in one group of pancratic lens set is set in laser group the place ahead, in order to promote the translational speed of its laser group focus projection, to improve the processing action that the prior mechanical action can't cooperate laser group, remove and polish twice procedure again via material, part after the processing is merged with matsurface, produce designed floral designs, and can make its processing place present the effect of similar polishing, so that the product surface that is produced after this mould mold pressing can present the different variations or the effect of refraction.
Description of drawings
Fig. 1 is the schematic diagram of die surface;
Fig. 2 is the enforcement illustration that the present invention processes;
Fig. 3 is the action schematic diagram that lens set of the present invention is carried out zoom;
Fig. 4 is a polishing manuscript of the present invention;
Fig. 5 is the schematic diagram of the position, processing rear section of 4 figure.
The primary clustering symbol description
1.. to be processed
11.. surface
2.. laser group
3.. lens set
4.. speculum
5.. speculum
[embodiment]
Below in conjunction with accompanying drawing and preferred embodiment structure of the present invention, use and feature thereof are made darker one deck, clear and definite, full and accurate explanation.
At first see also shown in the 2nd and 3 figure, the present invention is a kind of method of processing mould surface by using laser, mainly be provided with one group of pancratic lens set 3 of optical profile type in laser group 2 the place aheads, utilize optical zoom to move to reach the method for processing mold, it includes the following step:
(a) with the curvature of to be processed surface area of computer calculating, use the running parameter that obtains laser focal;
(b) utilize the adjustment of pancratic lens set to change laser focal fast, remove processing to carry out to be processed surface;
(c), make the heat energy of laser remove the material on to be processed surface by adjusting the laser power parameter;
(d) treat above-mentioned machining after, remeasure its frequency and power according to original machining path;
(e) reduce its laser power parameter and carry out repeatedly surface of the work polishing processing again.
The present invention makes the translational speed of laser projection focus can cooperate the curved surface of workpiece, to improve the processing action that the prior mechanical action can't cooperate laser group 2, so be provided with in laser group 2 the place aheads one group of pancratic lens set 3 (because of its structure of its lens set comparatively complicated, so in diagram, only present its optical zoom mode) with the eyeglass signal, utilize the translational speed of above-mentioned lens set 3 optical zooms definitely to drive workbench translational speed up and down, in order to can promote the translational speed of its laser group 2 focuses projection far above commonly using mechanical type.
In a desirable embodiment, this pancratic lens set 3 is the camera lenses that can carry out optical zoom.
In a possible embodiments, but, can add speculum 4,5,, just can promote its Laser Processing scope and speed in order to reflect laser and to cooperate lens set 3 to carry out the action of optical zoom for the laser machining angle that this laser group 2 is throwed is bigger.
(a) is described with step, and the present invention needs to calculate curvature that its surface 11 cuts off areas triangle that converts via computer at workpiece to be processed 1 (or mould) and contains several vertical length of sides before processing, and then can learn the variable quantity of laser focal.The curvature of above-mentioned cut-out area system is made up of countless point on to be processed 1 sectional curve, but is not that each is put and all can process, so need calculate curvature so that calculate an approximation.Can form required line or surface area via calculating points countless on the sectional curve after to be processed.
So the present invention be applicable to metal processing with refined gram laser instrument (YAG), its processing is the basic parameter that depends on laser power (%), laser frequency (kHz) and carving speed (mm/s), is controlled the condition of Laser Processing part by above-mentioned three parameters.
As described in step (b), utilize pancratic lens set 3, change laser focal fast and carry out to be processed 1 surface 11 processing.The correction of above-mentioned lens set 3 optical mirror slips can make on all point-device section that drops on to be processed 1 curved surface of laser focal (as the displacement zoom of A among Fig. 3 and B distance), and cooperate speculum 4,5 to reflect the effect of laser, again via repeatedly different section processing, make the surface area after its one-tenth one capable of being combined is processed, and then processing is to present high-precision surface of the work.
Moreover as described in the step (c), add man-hour need be according to its floral designs or processing depth difference, adjust and control the parameter (laser power (%), laser frequency (kHz) and carving speed (mm/s) etc.) of its laser group 2, the heat energy that laser group 2 is throwed can remove the material of surface of the work according to design.
But neither together because of its working power of every kind of material, frequency and temperature, so in the present embodiment, the present invention does example with NAK 80 materials.Need to adjust the machined parameters of its laser group 2, make the focal length of each projection of laser put formed heat energy, just can allow this to be processed 1 surface 11 remove the material of 0.002mm.
Because of laser has high difficulty in the adjustment of machined parameters,, the present invention changes the important of parameter at any time so making it can be more readily understood it with " temperature " parameter explanation.With NAK-80 material (constrictive type perhardened steel) is example, under reasonable frequency (about 400 to 450kHz) collocation about 2000 to 2500 ℃ can be with its material carbonization, and working depth is about 0.002mm.And with the working depth of 0.002mm its in theory than the coarse offset on to be processed 1 surface 11 come little, so can on the coarse decorative pattern on its to be processed 1 surface 11, process the lines (decorative pattern) of desire processing, part after the laser of this moment is processed merges with matsurface, and produces designed profile.
Please join shown in Figure 4, treat that above-mentioned steps machines after, step (d) and (e) is promptly carried out on the fusion surface 11 that desire processing is meticulousr.Step (d) is promptly used original machining path, remeasure its laser group 2 machined parameters (frequency and power etc.) with computer, with the NAK-80 material is that its preferable processing temperature of example is about between 1500 to 1700 ℃, the frequency of comparatively dense and lower power temperature, make and add man-hour its metal material and can not be carbonized, only can present thawing effect (generally claiming the surface heat dissociation), this moment, this to be processed 1 surface 11 can form shiny surface (as the processed part position later of Fig. 5) because of the surface heat dissociation rearranges its molecule, again in of the repeat processing of identical machining path through 10 to 20 times, make its processing place can present similar polishing effect, so can form former rough surface and present processing lines and surface area (floral designs), and to be processed 1 surface 11 of burnishing surface merged in the processing part.
In sum, the present invention is except that one group of pancratic lens set 3 is set in laser group 2 the place aheads, in order to promote the translational speed of its laser group 2 focuses projection, to improve the processing action that the prior mechanical action can't cooperate laser group 2, remove and polish twice procedure again via material, part after the processing is merged with matsurface, produce designed floral designs, and can make its processing place present the effect of similar polishing, so that the product surface that is produced after this to be processed 1 (mould) mold pressing can present the different variations or the effect person of refraction.
The above only is preferred embodiment of the present invention, when not limiting scope of the invention process with this, be that all simple equivalent of being done according to the present patent application claim and description of the invention content change and modify, all should still belong in the scope that patent of the present invention contains.
Claims (3)
1. the method for a processing mould surface by using laser is characterized in that, is provided with one group of pancratic lens set of optical profile type in laser group the place ahead, and described method includes the following step:
(a), obtain the running parameter of laser focal with the curvature on to be processed surface of computer calculating;
(b) utilize the adjustment of pancratic lens set to change laser focal fast, remove processing to carry out to be processed surface;
(c) adjust the laser power parameter, make the heat energy of laser remove the material on to be processed surface;
(d) after the procedure of processing for the treatment of above-mentioned (a) and (b), (c) was finished in regular turn, the machining path according to above-mentioned procedure of processing remeasured, to determine the frequency and the power of laser group;
(e) the laser power parameter that reduces laser group is carried out repeatedly to be processed surface finish processing again.
2. the method for processing mould surface by using laser according to claim 1 is characterized in that, described laser group is refined gram laser instrument.
3. the method for processing mould surface by using laser according to claim 1 is characterized in that, described pancratic lens set is the camera lens that can carry out optical zoom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610145388XA CN100450695C (en) | 2006-11-28 | 2006-11-28 | Method for processing mould surface by using laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200610145388XA CN100450695C (en) | 2006-11-28 | 2006-11-28 | Method for processing mould surface by using laser |
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| CN1947918A CN1947918A (en) | 2007-04-18 |
| CN100450695C true CN100450695C (en) | 2009-01-14 |
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| CNB200610145388XA Expired - Fee Related CN100450695C (en) | 2006-11-28 | 2006-11-28 | Method for processing mould surface by using laser |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8076605B2 (en) * | 2007-06-25 | 2011-12-13 | Electro Scientific Industries, Inc. | Systems and methods for adapting parameters to increase throughput during laser-based wafer processing |
| CN106466926A (en) * | 2015-08-19 | 2017-03-01 | 普昱光电股份有限公司 | Optical element manufacturing method |
| CN105120026A (en) * | 2015-09-06 | 2015-12-02 | 深圳市中联讯科技有限公司 | Simulation mobile phone shell and processing method thereof |
| CN108422082A (en) * | 2017-02-15 | 2018-08-21 | 南京帝耐激光科技有限公司 | Laser process equipment, laser processing and its application |
| CN107199401B (en) * | 2017-04-24 | 2019-11-19 | 和品（香港）公司 | A kind of polishing method of laser polishing machine |
Citations (5)
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|---|---|---|---|---|
| CN2216443Y (en) * | 1994-07-18 | 1996-01-03 | 王佛性 | Varifocal optical focusing system for laser processing machine |
| DE10305876A1 (en) * | 2003-02-13 | 2004-08-26 | Robert Bosch Gmbh | Regulation method for a laser cutting process generates a desired cutting geometry by evaluation of at least one sensor-measured parameter of the illumination process in order to evaluate and regulate laser focus and movement |
| US6861616B1 (en) * | 1998-09-30 | 2005-03-01 | Lasertec Gmbh | Depth measurement and depth control or automatic depth control for a hollow to be produced by a laser processing device |
| CN1774314A (en) * | 2003-04-16 | 2006-05-17 | 绍尔有限公司 | Method and device for producing a cavity in a workpiece |
| CN1795072A (en) * | 2003-05-28 | 2006-06-28 | 德国索尔公司 | Method and device for the production of a swaging |
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2006
- 2006-11-28 CN CNB200610145388XA patent/CN100450695C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2216443Y (en) * | 1994-07-18 | 1996-01-03 | 王佛性 | Varifocal optical focusing system for laser processing machine |
| US6861616B1 (en) * | 1998-09-30 | 2005-03-01 | Lasertec Gmbh | Depth measurement and depth control or automatic depth control for a hollow to be produced by a laser processing device |
| DE10305876A1 (en) * | 2003-02-13 | 2004-08-26 | Robert Bosch Gmbh | Regulation method for a laser cutting process generates a desired cutting geometry by evaluation of at least one sensor-measured parameter of the illumination process in order to evaluate and regulate laser focus and movement |
| CN1774314A (en) * | 2003-04-16 | 2006-05-17 | 绍尔有限公司 | Method and device for producing a cavity in a workpiece |
| CN1795072A (en) * | 2003-05-28 | 2006-06-28 | 德国索尔公司 | Method and device for the production of a swaging |
Non-Patent Citations (4)
| Title |
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| CO2激光加工机连续可变焦距光学系统. 李又生，王佛性.华中理工大学学报，第26卷第4期. 1998 |
| CO2激光加工机连续可变焦距光学系统. 李又生，王佛性.华中理工大学学报，第26卷第4期. 1998 * |
| YAG激光加工机新型VFL系统. 李又生，王佛性，胡兵，雷建设.应用激光，第18卷第1期. 1998 |
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| CN1947918A (en) | 2007-04-18 |
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