CN100588556C - Improvement of data matrix code identification ratio inscribed on cutter - Google Patents
Improvement of data matrix code identification ratio inscribed on cutter Download PDFInfo
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- CN100588556C CN100588556C CN200710018046A CN200710018046A CN100588556C CN 100588556 C CN100588556 C CN 100588556C CN 200710018046 A CN200710018046 A CN 200710018046A CN 200710018046 A CN200710018046 A CN 200710018046A CN 100588556 C CN100588556 C CN 100588556C
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Abstract
The invention is concerned with an enhancing method for recognizing and reading ratio about the data matrix code signed on knife. It solves the problem that the application of directly signing data matrix code technology on knife and depends the pretending dispose method of sign face to solve the wear and tear, pollution and rusty problem of the signed code on knife. It also solves the problem that the contrast of code is small and the quality of figure is bad induced by the glisten of metal surface by enhancing the contrast of mark and the coarseness degree of mark surface. If the code is distortion and is difficult to recognize for the surface shape of knife, it improves by the selecting method by marking surface, and it enhances the recognizing and reading ratio about the data matrix code signed on knife greatly.
Description
Technical field
The invention belongs to the Automatic Logos technical field of manufacturing resources such as cutter.
Background technology
At present, bar code technology, radio frequency discrimination RFID technology and direct marking data matrix code technology are mainly taked in the Automatic Logos management of cutter resource.The bar code technology is that the bar-code label that will reflect tool-information is attached on the corresponding cutter, and this method cost is low, is widely used in the middle of the management of cutter storehouse.But the problem that this method exists is also given prominence to, such as: bar-code label separates with cutter, because the artificial mistake of bringing that gets involved reads and can not avoid fully; Pocket knife tool etc. can't be pasted bar-code label; Must could obtain its full detail by means of the cutter database on backstage.The radio frequency discrimination RFID technology is to read and write the coded data that comprises in the electronic tag in the mode of wireless telecommunications, its major advantage is a recognition accuracy rate height, but this technology is used for the sign of cutter its limitation is arranged also: at first, for undersized cutter, it is very difficult selecting suitable electronic tag and it is embedded in the cutter, secondly, electronic tag is embedded into after the cutter, may change the physical parameter of cutter.Directly marking data matrix code technology can address the above problem, it be with the direct marking of data matrix code on tool surface, sign indicating number and same substantially life-span of cutter.But because the complexity of production environment and production technology, some problems can appear in the data matrix code of direct marking on the tool surface, such as: the bar code of the direct marking of tool surface is worn easily, pollutes and corrodes; The reflective bar code contrast of marking that causes in metal surface is little, and image quality is poor; The surface configuration of resources such as cutter (cylinder, circular cone etc.) causes the bar code metamorphopsic distortion of marking etc., and these all cause the code reading rate of mark to reduce.
Summary of the invention
In order to overcome prior art in the low deficiency of cutter data matrix code reading rate, the invention provides a kind of data matrix code reading rate raising method, can significantly improve the recognition rate of data matrix code on the cutter.
The step that the present invention is adopted when solving its technical problem is as follows:
The surface of the first step, selection marking bar code.
Not having the antiradar reflectivity of pit and projection, more smooth surface is the preferential labeled surface of selecting, and preferentially selects plane marking data matrix code.If must be on the face of cylinder (inner cylinder, outer cylinder) marking data matrix code, should select the rectangle data square matrix code to reduce the module distortion of sign indicating number as far as possible so, the lengthwise dimension of sign indicating number is placed vertically, width dimensions should be no more than 16% of cylinder diameter, packing density with time-code is as far as possible little, sees the Fig. 1 in the description of drawings.
The roughness on second step, marking surface is handled.
Experiment shows: the roughness average Ra of labeled surface should just can normally distinguish between 0.2 μ m-6.3 μ m.If the value of surface roughness not in this scope, the more smooth or more coarse mark again that so should the surface need handle.Such as: too coarse surface will make its smoothing before making marks, so that recognition the time can be known the data module of distinguish yard and the concavo-convex micro-shape of material surface; Highlighted metal surface is too smooth, will make its veining before making marks, and veining is to make tool surface coarse to reduce the dazzle on surface before mark, and dazzle all is disadvantageous for the code sign recognition of virtually any size.The value of roughness should be not more than 6.3 μ m, be not less than 0.2 μ m after the surface treatment, and the surface-treated area should be the width that extends a symbol outside four borders of square matrix code symbol respectively, sees the Fig. 2 in the description of drawings.Successfully distinguish simultaneously in order to guarantee, the data module unit of square matrix code must be directly along with the mean value of surface roughness increases in proportion, specifically numerical value can be according to following formula calculating:
Symbol minimal data modular unit (mm)=0.06 * roughness value Ra (μ m)+0.1702.
The contrast on the 3rd step, raising marking surface.
The tool surface color has considerable influence to bar-code identification speed, and by test as can be known: being coated with of metal surface (plating) layer color is dark more, and promptly contrast is big more after the marking, and recognition speed is high more.Experimental results show that 2 kinds of methods listing below can effectively improve the contrast on marking surface.
(1) titanium nitride coating plated film
Add titanium nitride coating at the tool surface of wanting marking, its outward appearance can be plated to multiple colors such as atropurpureus, pewter, gold, green grey, argent, copper, silver color, purple, black, the bar code of marking on this surface has improved the discrimination of surperficial contrast and bar code.
(2) bar code is painted
Use for reference the metal surface cladding method, adopt black or sepia pigment to be coated in tool surface, when adopting laser that marking is carried out in the metal surface, the heat of laser at first makes pigment melt, and mixes with melt metal, makes bar code painted after the cooling.
First protective treatment after the 4th step, the cutter marking.
Because tool surface can corrosion occur easily after marking, influence the recognition rate, so need do certain processing to marking face.Reached a conclusion by experiment: smear antirust oil and can effectively improve the bar code reading rate, the recognition reliability can improve more than 10%, sees the Fig. 3 in the description of drawings.Smearing antirust oil is a kind of simple effective method, and treated marking face can reach the basic demand of storage, recognition, certainly, will be higher if superscribe the oilpaper reliability again.
The 5th step, cutter use the protective treatment of back marking face.
Because in the use of production scene, the marking face of cutter can be infected with light or heavy greasy dirt, greasy dirt meeting more or less exerts an influence to the recognition of cutter bar code, therefore, will handle the marking face that greasy dirt is arranged, usual way is: the pre-degreasing of gasoline → alkaline degreasing → washing → acid pickling and rust removing → clean → dry up → soak dewatering rust preventive oil → oil sealing paper bag to wrap up in.But the shortcoming of this method is: gasoline volatilization is fast, and dangerous and alkaline degreaser is also bad to the mineral oil deoiling effect.
It is that phosphoric acid is 3% that the present invention adopts a kind of percentage, and surfactant is 1% aqueous cleaning agent.Cutter is immersed in the degreasing bath, utilizes wetting, infiltration, emulsification, the divergent function of surfactant, add acid and can produce small quantity of hydrogen, can quicken peeling off of greasy dirt with the metal surface contact.Concrete steps are:
1) cutter being immersed in percentage is phosphoric acid 3%, in the aqueous cleaning agent of surfactant 1%, soaks about 15 minutes;
2) water cleans cutter;
3) be 15% sulfuric acid or hydrochloride derusting 30 minutes with percentage;
4) water cleans cutter;
5) dry up;
6) soaked dewatering rust preventive oil 1～3 minute;
7) the oil sealing paper bag is wrapped up in.
Cutter soaked about 15 minutes, even under winter 5 ℃ low temperature, can remove effectively also that tool surface is light, the moderate greasy dirt, and degreasing rate can reach more than 90%.For the heavy oil dirt,, soak oil removing again after can cleaning earlier by mechanical force with degreaser tool surface as grease.
Reach a conclusion from experiment, the cutter of marking is handled through degreasing, dehydration marking face such as antirust after use, can the recognition rate improve 30%, sees the Fig. 4 in the description of drawings.The marking face processing that cutter is described is a kind of effective ancillary fabrication method to improving cutter bar code recognition rate.
The invention has the beneficial effects as follows: solved the problem that direct marking data matrix code technology occurs in cutter sign is used respectively from different perspectives, the problem that is worn easily, pollutes and corrode for the bar code of the direct marking of tool surface relies on the solution of marking face protection processing method; For the metal surface reflectively cause the bar code contrast of marking little, the problem of image quality difference relies on the method that improves the marking contrast and the roughness processing method on marking surface comprehensively solves; Surface configuration (cylinder, circular cone etc.) for resources such as cutters causes the impalpable problem of bar code metamorphopsic distortion of marking to rely on the system of selection on marking surface to improve; The present invention has significantly improved the recognition rate of data matrix code on the cutter.
The present invention is further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the schematic diagram of the present invention at face of cylinder marking data matrix code.
Fig. 2 is the veining area schematic of the present invention at highlight bar code sign periphery.
Fig. 3 is the first protective treatment effect schematic diagram of the present invention after to the cutter marking.
Fig. 4 is the marking face protective treatment effect schematic diagram after the present invention uses cutter.
The specific embodiment
The specific embodiment that improves data matrix code reading rate method on the cutter is listed in this part.Handle to as if one silver gray
Drill bit: the mark content is ABCD1234.
The first step, the surface of selection marking bar code.
Owing to have center positioning hole and area too little on the end plane of this cutter, be not enough to the mark bar code, so need be in the outer cylinder marking of cutter, at this moment should select the data matrix code of rectangle, the lengthwise dimension of sign indicating number is placed vertically, width dimensions should be no more than 16% of cylinder diameter, sees accompanying drawing 1.
In second step, the roughness on marking surface is handled.
The surface roughness Ra of this cutter outer cylinder is 0.8 μ m, and this is worth between 0.2 μ m-6.3 μ m, can normally distinguish.For the high success rate that guarantees to distinguish, the data module unit of symbol should be not less than 0.2182mm, and this numerical value calculates according to following formula:
Symbol minimal data modular unit (mm)=0.06 * roughness value Ra (μ m)+0.1702
＝0.06×0.8+0.1702＝0.2182。
In the 3rd step, improve the contrast on marking surface.
Cutter is after the marking bar code, in order to improve the speed of recognition, need to improve the contrast on marking surface, at this, we have used the bar code method of colouring, adopt black pigment to be coated in tool surface, adopt laser that marking is carried out in the metal surface, the heat of laser at first makes pigment melt, and mixes with melt metal, makes bar code painted after the cooling.Test shows, uses that the recognition speed of bar code obviously improves after this method, and the recognition time was brought up to 5 seconds from 8 seconds.
The 4th step, the first protective treatment after the cutter marking.
Tool surface needs to smear antirust oil avoiding corrosion after the marking bar code, otherwise very easily oxidation of tool surface influences the recognition rate.Test shows that the success rate of distinguishing after marking face is handled has improved 10%.
In the 5th step, cutter uses the protective treatment of back marking face.
The marking face of this cutter will carry out degreasing after use handles, and the order of method is:
1) cutter being immersed in percentage is phosphoric acid 3%, in the aqueous cleaning agent of surfactant about 1%, soaks about 15 minutes.
2) water cleans cutter.
3) be 15% sulfuric acid or hydrochloride derusting 30 minutes with percentage.
4) water cleans cutter.
5) dry up.
6) soaked dewatering rust preventive oil 1～3 minute.
7) the oil sealing paper bag is wrapped up in.
Test shows: this processing procedure will make the recognition rate of bar code improve 30%.
Claims (6)
1, the data matrix code reading rate raising method of marking on cutter is characterized in that comprising the steps:
(a) antiradar reflectivity, more smooth surface are selected in the surface of marking bar code, select plane marking data matrix code;
(b) roughness on marking surface is handled, too coarse surface made its smoothing before making marks, highlighted surface made its veining before making marks, the roughness average Ra that guarantees labeled surface is between 0.2 μ m-6.3 μ m, and the surface-treated area is the width that extends a symbol outside four borders of square matrix code symbol respectively; The data module unit of square matrix code is along with the mean value of surperficial phase rugosity increases in proportion, and concrete numerical value is:
Symbol minimal data modular unit (mm)=0.06 * roughness value Ra (μ m)+0.1702;
(c) contrast on raising marking surface;
(d) the first protective treatment after the cutter marking: smear antirust oil;
(e) cutter uses the protective treatment of back marking face, and concrete steps are:
1) cutter is immersed in the aqueous cleaning agent that percentage is phosphoric acid 3%, surfactant 1% about 15 minutes;
2) water cleans cutter;
3) be 15% sulfuric acid or hydrochloride derusting 30 minutes with percentage;
4) water cleans cutter;
5) dry up;
6) soaked dewatering rust preventive oil 1～3 minute;
7) the oil sealing paper bag is wrapped up in.
2, the data matrix code reading rate raising method of marking on cutter is characterized in that comprising the steps:
(a) antiradar reflectivity, more smooth surface are selected in the surface of marking bar code, for the face of cylinder, select the rectangle data square matrix code, and the lengthwise dimension of sign indicating number is placed vertically, and width dimensions is no more than 16% of cylinder diameter;
(b) roughness on marking surface is handled, too coarse surface made its smoothing before making marks, highlighted surface made its veining before making marks, the roughness average Ra that guarantees labeled surface is between 0.2 μ m-6.3 μ m, and the surface-treated area is the width that extends a symbol outside four borders of square matrix code symbol respectively; The data module unit of square matrix code is along with the mean value of surface roughness increases in proportion, and concrete numerical value is:
Symbol minimal data modular unit (mm)=0.06 * roughness value Ra (μ m)+0.1702;
(c) contrast on raising marking surface;
(d) the first protective treatment after the cutter marking: smear antirust oil;
(e) cutter uses the protective treatment of back marking face, and concrete steps are:
1) cutter is immersed in the aqueous cleaning agent that percentage is phosphoric acid 3%, surfactant 1% about 15 minutes;
2) water cleans cutter;
3) be 15% sulfuric acid or hydrochloride derusting 30 minutes with percentage;
4) water cleans cutter;
5) dry up;
6) soaked dewatering rust preventive oil 1～3 minute;
7) the oil sealing paper bag is wrapped up in.
3, a kind of data matrix code reading rate raising method of marking on cutter according to claim 1 or 2, it is characterized in that: the contrast on described raising marking surface is to add the titanium nitride coating plated film at the tool surface of wanting marking.
4, a kind of data matrix code reading rate raising method of marking on cutter according to claim 1 or 2, it is characterized in that: the contrast on described raising marking surface is that black or sepia pigment are coated in tool surface, adopt laser that marking is carried out in the metal surface, pigment is melted, mix with melt metal, make bar code painted after the cooling.
5, a kind of data matrix code reading rate raising method of marking on cutter according to claim 1 or 2, it is characterized in that: the first protective treatment after the described cutter marking is to superscribe oilpaper after smearing antirust oil again.
6, a kind of data matrix code reading rate raising method of marking on cutter according to claim 1 or 2 is characterized in that: cutter is immersed in the aqueous cleaning agent of percentage as phosphoric acid 3%, surfactant 1% after cleaning by mechanical force with degreaser earlier when described cutter uses the protective treatment of back marking face again and carries out the protective treatment step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710018046A CN100588556C (en) | 2007-06-14 | 2007-06-14 | Improvement of data matrix code identification ratio inscribed on cutter |
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| CN200710018046A CN100588556C (en) | 2007-06-14 | 2007-06-14 | Improvement of data matrix code identification ratio inscribed on cutter |
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| CN100588556C true CN100588556C (en) | 2010-02-10 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019780B (en) * | 2009-09-18 | 2012-11-07 | 宁波唯尔激光科技有限公司 | Method and equipment for coloring and marking laser |
| CN101804744B (en) * | 2010-03-25 | 2011-06-15 | 南京航空航天大学 | Method for carrying out laser digital marking on small-diameter cutter |
| CN103692798B (en) * | 2013-12-13 | 2015-08-26 | 合肥江航飞机装备有限公司 | The method of metal parts corrosion resistant surfaces laser marks Quick Response Code |
| EP3665016B1 (en) * | 2017-08-09 | 2021-11-24 | Parker-Hannifin Corporation | Enhanced method for product marking |
| CN109664026B (en) * | 2019-02-22 | 2021-03-30 | 陕西科技大学 | Laser marking method for small-size two-dimensional code on surface of aluminum alloy |
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| CN1205051C (en) * | 1997-07-16 | 2005-06-08 | 奥蒂斯电梯公司 | Method and compositions for laser imprinting, and articles imprinted using such method and compositions |
| CN1854335A (en) * | 2005-04-18 | 2006-11-01 | 山特维克知识产权股份有限公司 | Coated cutting tool insert |
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Patent Citations (3)
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|---|---|---|---|---|
| EP0345032B1 (en) * | 1988-05-31 | 1996-09-11 | Dainippon Ink And Chemicals, Inc. | Method and composition for laser-marking |
| CN1205051C (en) * | 1997-07-16 | 2005-06-08 | 奥蒂斯电梯公司 | Method and compositions for laser imprinting, and articles imprinted using such method and compositions |
| CN1854335A (en) * | 2005-04-18 | 2006-11-01 | 山特维克知识产权股份有限公司 | Coated cutting tool insert |
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