CN103170481A - Surface cleaning method of electric discharge machining mold - Google Patents
Surface cleaning method of electric discharge machining mold Download PDFInfo
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- CN103170481A CN103170481A CN2011104409428A CN201110440942A CN103170481A CN 103170481 A CN103170481 A CN 103170481A CN 2011104409428 A CN2011104409428 A CN 2011104409428A CN 201110440942 A CN201110440942 A CN 201110440942A CN 103170481 A CN103170481 A CN 103170481A
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Abstract
The invention discloses a surface cleaning method of an electric discharge machining mold. The surface cleaning method comprises a primary cleaning step, a laser surface treatment step and an atmospheric plasma treatment step. According to the primary cleaning step, a to-be-cleaned electric discharge machining mold is cleaned in a wet type cleaning mode, and the electric discharge machining mold is dried after being cleaned. According to the laser surface treatment step, a laser device is used for laser surface treatment directing at the carbon deposition portion or the smudge portion of the surface of the electric discharge machining mold. According to the atmospheric plasma treatment step, an atmospheric plasma cleaning device is used for cleaning the surface of the electric discharge machining mold. According to the surface cleaning method of the electric discharge machining mold, a cleaning method that lasers composite atmospheric plasma is used, the carbon deposition or smudges on the surface of the electric discharge machining mold are removed completely, and so that the surface cleanliness is improved. Therefore, the percent of pass of coatings of products is improved, the service life of the electric discharge machining mold is prolonged, the quality of the products is maintained, and meanwhile manufacturing cost is lowered.
Description
Technical field
The present invention is relevant for a kind of discharge processing mold method for cleaning surface, and is especially a kind of in order to the cleaner discharge processing mold, makes discharge processing mold surface active to keep the discharge processing mold method for cleaning surface of Product Precision.
Background technology
" vacuum electric slurry " reaches " atmospheric plasma " is all the article surface clean method that has been widely used in each industry; Wherein, clean method for discharge processing mold surface, although the effect of vacuum electric slurry cleaning is fine, but the workpiece that can process is subject to form and the size of the vacuum cavity of vacuum electric slurry cleaning device, make process compatibility low, therefore and be not suitable for surface with vacuum electric slurry Clean method cleaner discharge processing mold and the factors such as the low and apparatus expensive of productive rate are arranged again, all indirectly increased the manufacturing cost of product.
Relatively, atmospheric plasma is in atmospheric pressure environment, utilizes the high energy electric field action, neutral gas is dissociated and become electricity slurry attitude, need not use expensive vacuum cavity and vacuum system; Therefore, the present method on cleaner discharge processing mold surface, mainly with the atmospheric plasma cleaning mode with high technology compatibility, fast and convenient, low temperature and the advantage such as low-cost for it.
Yet the energy of atmospheric plasma cleaning is lower, on the discharge processing mold, the place of serious carbon distribution being arranged, and can't reach the effect of complete decarbonizing; In the situation that each soot accumulation, the plated film qualification rate that causes product is variation gradually, makes this discharge processing mold just need be eliminated after using certain number of times, not only is difficult for keeping the quality of product, has also increased the cost of manufacturing simultaneously.
Summary of the invention
The object of the invention is the shortcoming that solves above-mentioned prior art, so that a kind of discharge processing mold method for cleaning surface to be provided, can utilize the clean method of the compound atmospheric plasma of laser, with carbon distribution or the dirty thorough removing on discharge processing mold surface, to promote surface cleanness.
For reaching aforementioned goal of the invention, discharge processing mold method for cleaning surface of the present invention comprises: a preliminary cleaning, clean a discharge processing mold to be cleaned in the mode of wet-cleaned, and the processing mold that should discharge is dry after cleaning; A Laser Surface Treatment step, at least one is completed the workbench that discharge processing mold after this preliminary cleaning is placed in a twin shaft positioning equipment, set the path of dividing a word with a hyphen at the end of a line by this twin shaft positioning equipment, produce displacement along this path of dividing a word with a hyphen at the end of a line with respect to this workbench by this laser aid of twin shaft positioning equipment control and a camera head, and finding that by this camera head there is carbon distribution on this at least one discharge processing mold surface or when dirty, produce a laser beam with this laser aid and remove this carbon distribution or dirty; Reach an atmospheric plasma treatment step, clean the surface of this at least one discharge processing mold with an atmospheric plasma cleaning device.
Discharge processing mold method for cleaning surface of the present invention separately comprises a detecting step, and whether the cleannes on respectively this discharge processing mold surface of this detecting step inspection after this atmospheric plasma treatment step cleaning have reached criterion of acceptability.
Discharge processing mold method for cleaning surface of the present invention, wherein, this path of dividing a word with a hyphen at the end of a line has several stagnation points, when this camera head contraposition during to this stagnation point respectively, relative displacement between this workbench and camera head will suspend one section Preset Time, and continue subsequently along this path displacement of dividing a word with a hyphen at the end of a line.
Discharge processing mold method for cleaning surface of the present invention, wherein, the power of this laser beam is 3 ~ 100W.
Discharge processing mold method for cleaning surface of the present invention, wherein, this atmospheric plasma cleaning device is set up in this twin shaft positioning equipment, and relative with this workbench.
Discharge processing mold method for cleaning surface of the present invention, wherein, this atmospheric plasma cleaning device controlled by this twin shaft positioning equipment and this workbench produces relative displacement, and at least one discharge processing mold sprays atmospheric plasma to this by this atmospheric plasma cleaning device simultaneously.
Discharge processing mold method for cleaning surface of the present invention, wherein, the relative displacement speed between this atmospheric plasma cleaning device and this workbench is 5 ~ 100 mm/second.
Discharge processing mold method for cleaning surface of the present invention, wherein, the working gas of this atmospheric plasma cleaning device is air, nitrogen, oxygen, argon gas or its mist, operating voltage is 100 ~ 500V.
Discharge processing mold method for cleaning surface of the present invention, wherein, detect by this detecting step the discharge processing mold that cleannes do not reach this criterion of acceptability, again carry out this Laser Surface Treatment step and atmospheric plasma treatment step, removing the carbon distribution or dirty on surface, until till the cleannes that detected by this detecting step reach criterion of acceptability.
Discharge processing mold method for cleaning surface of the present invention, wherein, this wet-cleaned comprises degreasing and water wash procedures.
Beneficial effect of the present invention is: discharge processing mold method for cleaning surface of the present invention, can utilize the clean method of the compound atmospheric plasma of laser, carbon distribution or dirty thorough removing with discharge processing mold surface, to promote surface cleanness, thereby the plated film qualification rate of improving product, and extend service life of this discharge processing mold, and not only can keep the quality of product, also reduced the cost of making simultaneously.
Description of drawings
Fig. 1: the process block diagram of preferred embodiment of the present invention.
Fig. 2: the present invention carries out the schematic diagram of Laser Surface Treatment step.
Fig. 3 a: the path schematic diagram () of camera head of the present invention and workbench relative displacement.
Fig. 3 b: the path schematic diagram (two) of camera head of the present invention and workbench relative displacement.
Fig. 3 c: the path schematic diagram (three) of camera head of the present invention and workbench relative displacement.
Fig. 4: the present invention carries out the schematic diagram of atmospheric plasma treatment step.
Fig. 5: the schematic diagram that carries out the test result of water droplet contact angle test before a discharge processing mold cleaning surfaces.
Fig. 6: the schematic diagram of the test result of water droplet contact angle test is only crossed and is carried out on this discharge processing mold surface with the atmospheric plasma cleaning.
Fig. 7: the schematic diagram of the test result of water droplet contact angle test is crossed and is carried out on this discharge processing mold surface with the compound atmospheric plasma cleaning of laser.
Wherein:
1 discharge processing mold 2 laser aid 21 shower nozzles
3 twin shaft positioning equipment 31 workbench 4 camera heads
41 camera lens 5 atmospheric plasma cleaning device 51 shower nozzles
The preliminary cleaning S2 of S1 Laser Surface Treatment step S3 atmospheric plasma treatment step
The S4 detecting step R1 path R2 path P stagnation point of dividing a word with a hyphen at the end of a line of dividing a word with a hyphen at the end of a line.
The specific embodiment
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and cooperation accompanying drawing are described in detail below:
" ultrasonic wave cleaner " of the present invention refers to be provided with rinse bath, and can be by the liquid in this rinse bath of ultrasonic vibrations, to promote cleaning efficiency.
" baking oven " of the present invention refers to have a room, and can utilize the thermals source such as electric heating or the combustion heat gas temperature in this room that raises, and can be placed in order to evaporation the moisture of article in this room.
" laser aid " of the present invention, referring to can be by a shower nozzle Emission Lasers light beam, in order to article surface is carried out laser cleaning; Wherein, be applicable to laser aid of the present invention, can produce wave-length coverage at the laser beam of 100 ~ 1200nm, and can adjust according to demand the power of laser beam.
" twin shaft positioning equipment " of the present invention, refer to have one in order to set up the workbench of article, reach one in order to set up the processing seat of default processing unit (plant), and can set the path of dividing a word with a hyphen at the end of a line by a control module, with drive this workbench and processing seat on X-Y plane along this Path generation relative displacement of dividing a word with a hyphen at the end of a line.
" camera head " of the present invention, referring to can be by the image in a camera lens acquisition preset range.
" atmospheric plasma cleaning device " of the present invention refers to and can utilize the high energy electric field that neutral gas is dissociated into electricity slurry attitude (plasma state) under normal pressure, and eject the working fluid of electricity slurry attitude so that article surface is cleaned by a shower nozzle.
" water droplet contact angle measurement instrument " of the present invention refers to measure water droplet and object surface angle, can be in order to judge the cleannes of this object surface.
See also shown in Figure 1, be preferred embodiment of the present invention, this discharge processing mold method for cleaning surface comprises a preliminary cleaning S1, a Laser Surface Treatment step S2 and an atmospheric plasma treatment step S3, to clean at least one discharge processing mold 1(as shown in Figure 2) carbon distribution and/or dirty on surface.
Preliminary cleaning S1 of the present invention cleans a discharge processing mold 1 to be cleaned in the mode of wet-cleaned, and processing mold 1 drying of should discharging after cleaning.In more detail, for promoting cleaning efficiency, can pass through a ultrasonic wave cleaner, sequentially this discharge processing mold 1 is carried out the program of the wet-cleaned such as degreasing and washing in a rinse bath, by the liquid in this rinse bath of ultrasonic vibrations, the cleaning effect of wet-cleaned is promoted.Wherein, this degreasing program utilizes will the discharge grease of processing mold 1 surface attachment, dirty and attachment of degreasing agent to remove, and this water wash procedures is that the degreasing agent of this discharge processing mold 1 remained on surface is clean.
After this discharge processing mold 1 is completed wet-cleaned, can select the modes such as natural air drying or heated baking, remove the moisture on this discharge processing mold 1; In the present embodiment, for promoting the efficient of dry this discharge processing mold 1, this discharge processing mold 1 can be inserted in a baking oven, and goodly heat appropriate time with the temperature that is no more than 250 ℃, make this discharge processing mold 1 drying, to complete the step of this discharge processing mold 1 of preliminary cleaning.
See also Figure 1 and Figure 2, Laser Surface Treatment step S2 of the present invention is for carbon distribution or the dirty place on this at least one discharge processing mold 1 surface, carries out Laser Surface Treatment with a laser aid 2.In more detail, can be with at least one discharge processing mold 1 of completing after this preliminary cleaning S1, allocation is put on the workbench 31 of a twin shaft positioning equipment 3; This laser aid 2 is set up in the processing seat (figure does not illustrate) of this twin shaft positioning equipment 3, and the other powerful camera head 4 that separately set up of this laser aid 2, this camera head 4 is electrically connected to a display (figure does not illustrate), the shower nozzle 21 of this laser aid 2 and the camera lens 41 of this camera head 4, all relative with this workbench 31, and with these workbench 31 interval predeterminable ranges.Wherein, the laser aid in the present embodiment 2 can be selected and can send the laser beam that wavelength is 532nm.
Moreover, also can be put in discharge processing mold 1 quantity on this workbench 31 according to allocation, set a suitable path R1 that divides a word with a hyphen at the end of a line by the control module of this twin shaft positioning equipment 3.For example, when allocation is put in discharge processing mold 1 quantity on this workbench 31 and is single, goodly set this path R1 that divides a word with a hyphen at the end of a line for detour in this discharge processing mold 1 various continuous path, for example shown in Fig. 3 a, Fig. 3 b, but not as limit; When allocation be put on this workbench 31 discharge processing mold 1 quantity for several the time, except setting for to complete for each discharge processing mold 1 individually, the path R1 that this can be divided a word with a hyphen at the end of a line detours, the path R1 that also this can be divided a word with a hyphen at the end of a line sets the various continuous path of the processing mold 1 that discharges across these several for, for example shown in Fig. 2, Fig. 3 c, but not as limit.
The operating temperature of this Laser Surface Treatment step S2 may be selected to be room temperature and gets final product, and pass through aforementioned structure, accurately control this laser aid 2 and camera head 4 by this twin shaft positioning equipment 3, and produce relative displacement along the default path R1 that divides a word with a hyphen at the end of a line between this workbench 31 on X-Y plane; Wherein, can make this workbench 31 keep motionless, drive this laser aid 2 and camera head 4 generation displacements, or make this laser aid 2 and camera head 4 keep motionless, drive this workbench 31 and produce displacements.
In addition, because the camera lens 41 of this camera head 4 only can capture image in preset range, therefore can be by the control module of this twin shaft positioning equipment 3, on dividing a word with a hyphen at the end of a line path R1, this establishes several stagnation points P, when these camera head 4 contrapositions during to each stagnation point P, relative displacement between this workbench 31 and camera head 4 will suspend a time of staying, and continue subsequently along this path R1 displacement of dividing a word with a hyphen at the end of a line; Wherein, this time of staying can be 0.5 ~ 5 second, is preferably 1 second.
Accordingly, the user can pass through this camera head 4, immediately observes by this display the position that this discharge processing mold 1 surface is photographed; If see serious carbon distribution or dirty place on a stagnation point P, can be to next pause instruction of control module of this twin shaft positioning equipment 3, relative displacement between this workbench 31 and camera head 4 is suspended, and controlling this laser aid 2, to send power be that 3 ~ 100W(is preferably 35W) laser beam, clean for this serious carbon distribution or dirty place, remove carbon distribution on this discharge processing mold 1 or dirty with the part.Wherein, setting by this camera head 4, this laser aid 2 can accurately only be cleaned for carbon distribution or dirty place, make high-octane laser beam can insweptly there is no carbon distribution or dirty place, can effectively avoid the surperficial impaired of this discharge processing mold 1, thereby be extended the service life of this discharge processing mold 1.
Remove on this stagnation point P on this discharge processing mold 1 carbon distribution or dirty after, can remove this pause instruction, make and continue between this workbench 31 and camera head 4 to produce relative displacement along this path R1 that divides a word with a hyphen at the end of a line, and these camera head 4 contrapositions are when the next stagnation point P, to stagnate momently again for observing whether the place that need to carry out laser cleaning is arranged, so repeat until complete the inspection of these upper all stagnation point P of path R1 that divide a word with a hyphen at the end of a line.
See also Fig. 1 and shown in Figure 4, atmospheric plasma treatment step S3 of the present invention is with the surface of atmospheric plasma cleaning device 5 these at least one discharge processing molds 1 of cleaning.In more detail, this atmospheric plasma cleaning device 5 can be set up in the processing seat of this twin shaft positioning equipment 3 equally, and the shower nozzle 51 of this atmospheric plasma cleaning device 5 is and interval predeterminable range relative with this workbench 31 also, and can set a suitable path R2 that divides a word with a hyphen at the end of a line by the control module of this twin shaft positioning equipment 3, this path R2 that divides a word with a hyphen at the end of a line can be identical with this path R1 that divides a word with a hyphen at the end of a line, also can be different.
Accordingly, this at least one discharge processing mold 1 surface is through this Laser Surface Treatment step S2, after removing serious carbon distribution or dirty place with the part, can accurately be controlled between this atmospheric plasma cleaning device 5 and this workbench 31 by this twin shaft positioning equipment 3 and produce relative displacement along the default path R2 that divides a word with a hyphen at the end of a line on X-Y plane, and synchronously at least one discharge processing mold 1 of this on this workbench 31 sprays atmospheric plasma by this atmospheric plasma cleaning device 5, with the residual carbon distribution of removing this at least one discharge processing mold 1 surface or dirty comprehensively.
In the present embodiment, the operating temperature of this atmospheric plasma treatment step S3 also may be selected to be room temperature and gets final product, the working gas of this atmospheric plasma cleaning device 5 can be air, nitrogen, oxygen, argon gas or its mist etc., operating voltage can be preferably 250V for 100 ~ 500V(), the relative displacement speed between this atmospheric plasma cleaning device 5 and workbench 31 can be preferably 20 mm/second for 5 ~ 100 mm/second().
See also shown in Figure 1, the better detecting step S4 that separately comprises of the present invention, whether this detecting step S4 has reached criterion of acceptability in order to the cleannes that check respectively this discharge processing mold 1 surface after this atmospheric plasma treatment step S3 cleaning.In more detail, can select to detect the surface of this discharge processing mold 1 by " water droplet contact angle method of testing ", after the cleaning through this Laser Surface Treatment step S2 and atmospheric plasma treatment step S3, whether reach qualified cleannes standard; Be also, the liquid deionized water drop of fixed volume can be sprinkled upon the surface of this discharge processing mold 1, and by a water droplet contact angle measurement instrument, measure the angle on water droplet and this processing mold 1 surface of discharging, borrow the criterion of " cleannes are higher; the water droplet contact angle is less ", judge the cleannes on this discharge processing mold 1 surface.
In addition, do not reach the discharge processing mold 1 of this criterion of acceptability for cleannes, can again carry out this Laser Surface Treatment step S2 and atmospheric plasma treatment step S3, remove the carbon distribution on surface or dirty, until till detecting cleannes and reach criterion of acceptability by this detecting step S4.
See also shown in Fig. 5 ~ 7, Fig. 5 ~ 7 are respectively " before cleaning ", " only crossing with the atmospheric plasma cleaning " reaches " crossing with the compound atmospheric plasma cleaning of laser " three kinds of situations, carry out the test result of water droplet contact angle test gained on the same position of same discharge processing mold.As shown in Figure 5, the discharge processing mold before cleaning, its surperficial water droplet contact angle is greater than 70 degree; As shown in Figure 6, the discharge processing mold of only crossing with the atmospheric plasma cleaning, its surperficial water droplet contact angle have been down to less than about 20 degree; As shown in Figure 7, but the discharge processing mold of crossing with the compound atmospheric plasma cleaning of laser, its surperficial water droplet contact angle even can be less than 10 degree, therefore discharge processing mold method for cleaning surface of the present invention can effectively promote the surface cleanness of discharge processing mold.
In sum, due to discharge processing mold method for cleaning surface of the present invention, can utilize the clean method of the compound atmospheric plasma of laser, carbon distribution or dirty thorough removing with discharge processing mold surface, promoting surface cleanness, thus the plated film qualification rate of improving product, and extend service life of this discharge processing mold, not only can keep the quality of product, also reduce the cost of making simultaneously.
Although the present invention has utilized above-mentioned preferred embodiment to disclose; so it is not to limit the present invention; anyly have the knack of this skill person within not breaking away from the spirit and scope of the present invention; above-described embodiment carries out various changes and revises still belonging to the technology category that the present invention protects relatively, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
But the above person is only preferred embodiment of the present invention, when not limiting the scope of the present invention with this; Therefore all simple equivalences of doing according to the present patent application the scope of the claims and description of the invention content change and modify, and all should still remain within the scope of the patent.
Claims (10)
1. a discharge processing mold method for cleaning surface, is characterized in that, comprises:
A preliminary cleaning cleans a discharge processing mold to be cleaned in the mode of wet-cleaned, and the processing mold that should discharge after cleaning is dry;
A Laser Surface Treatment step, at least one is completed the workbench that discharge processing mold after this preliminary cleaning is placed in a twin shaft positioning equipment, set the path of dividing a word with a hyphen at the end of a line by this twin shaft positioning equipment, produce displacement along this path of dividing a word with a hyphen at the end of a line with respect to this workbench by this laser aid of twin shaft positioning equipment control and a camera head, and finding that by this camera head there is carbon distribution on this at least one discharge processing mold surface or when dirty, produce a laser beam with this laser aid and remove this carbon distribution or dirty; And
An atmospheric plasma treatment step cleans the surface of this at least one discharge processing mold with an atmospheric plasma cleaning device.
2. discharge processing mold method for cleaning surface as claimed in claim 1, it is characterized in that, separately comprise a detecting step, whether the cleannes on respectively this discharge processing mold surface of this detecting step inspection after this atmospheric plasma treatment step cleaning have reached criterion of acceptability.
3. discharge processing mold method for cleaning surface as claimed in claim 1 or 2, it is characterized in that, this path of dividing a word with a hyphen at the end of a line has several stagnation points, when this camera head contraposition during to this stagnation point respectively, relative displacement between this workbench and camera head will suspend one section Preset Time, and continue subsequently along this path displacement of dividing a word with a hyphen at the end of a line.
4. discharge processing mold method for cleaning surface as claimed in claim 1 or 2, is characterized in that, the power of this laser beam is 3 ~ 100W.
5. discharge processing mold method for cleaning surface as claimed in claim 1 or 2, is characterized in that, this atmospheric plasma cleaning device is set up in this twin shaft positioning equipment, and relative with this workbench.
6. discharge processing mold method for cleaning surface as claimed in claim 5, it is characterized in that, this atmospheric plasma cleaning device controlled by this twin shaft positioning equipment and this workbench produces relative displacement, and at least one discharge processing mold sprays atmospheric plasma to this by this atmospheric plasma cleaning device simultaneously.
7. discharge processing mold method for cleaning surface as claimed in claim 6, is characterized in that, the relative displacement speed between this atmospheric plasma cleaning device and this workbench is 5 ~ 100 mm/second.
8. discharge processing mold method for cleaning surface as claimed in claim 5, is characterized in that, the working gas of this atmospheric plasma cleaning device is air, nitrogen, oxygen, argon gas or its mist, and operating voltage is 100 ~ 500V.
9. discharge processing mold method for cleaning surface as claimed in claim 2, it is characterized in that, detect by this detecting step the discharge processing mold that cleannes do not reach this criterion of acceptability, again carry out this Laser Surface Treatment step and atmospheric plasma treatment step, removing the carbon distribution or dirty on surface, until till the cleannes that detected by this detecting step reach criterion of acceptability.
10. discharge processing mold method for cleaning surface as claimed in claim 1, is characterized in that, this wet-cleaned comprises degreasing and water wash procedures.
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| CN2011104409428A CN103170481A (en) | 2011-12-26 | 2011-12-26 | Surface cleaning method of electric discharge machining mold |
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| CN2011104409428A CN103170481A (en) | 2011-12-26 | 2011-12-26 | Surface cleaning method of electric discharge machining mold |
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| CN104368564A (en) * | 2013-08-16 | 2015-02-25 | 北京合众建业机电科技有限公司 | Laser cleaning method for tire moulds |
| CN105499186A (en) * | 2015-12-15 | 2016-04-20 | 天津立中车轮有限公司 | Cleaning method of aluminum alloy hub mold |
| CN105934283A (en) * | 2013-12-20 | 2016-09-07 | 山特维克材料科技山特维克表面解决方案部德国有限公司 | Cleaning of press plates or revolving press belts |
| CN109623138A (en) * | 2018-11-28 | 2019-04-16 | 深圳供电局有限公司 | The treating method and apparatus of composite material surface |
| CN110730694A (en) * | 2017-04-25 | 2020-01-24 | 三菱电机株式会社 | Laser cleaning device and laser cleaning method |
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Application publication date: 20130626 |