CN2576401Y - Laser frosting device of multiple focusing heads - Google Patents
Laser frosting device of multiple focusing heads Download PDFInfo
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- CN2576401Y CN2576401Y CN 02260945 CN02260945U CN2576401Y CN 2576401 Y CN2576401 Y CN 2576401Y CN 02260945 CN02260945 CN 02260945 CN 02260945 U CN02260945 U CN 02260945U CN 2576401 Y CN2576401 Y CN 2576401Y
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Abstract
The utility model relates to a laser frosting device of multiple focusing heads for frosting treatment on the surfaces of metals. Laser beams transmitted by a laser are amplified by laser, and then are divided into multi-beam light by a beam splitter and are transmitted to focusing heads K (K is more or equal to 2). The focusing heads are placed on small moving platforms which can correspondingly move on a work platform. The focusing heads form a rectangle, or an inclined parallelogram, or a linear array. The work platform is placed on a laser rotary shaft of a numerically controlled machine. A frosting roller is placed on a rotary shaft of a roller of the numerically controlled machine. The numerically controlled machine is used for controlling the rotary shaft to rotate and the work platform on a guide rail to move. Thus, light focuses output by the focusing heads scan on the surface of the frosting roller to form frosting pit dot-array distribution. Compared with the prior art, the laser frosting device of the utility model can shorten frosting time, and can use a laser with low modulating frequency. The macroscopic uniformity of the frosting pit dot-array distribution generated by the utility model is good.
Description
Technical field:
The utility model is a kind of laser roughening device of poly shaven head.The texturing that is adapted to the metal surface is handled.
Background technology:
As everyone knows, the surface of steel plate all will be handled through texturing, and they form by the texturing roll compaction.The roller surface texturing is to adopt sandblast to form surface texturing the earliest.Spark technology has appearred in the 70-80 age, forms the texturing hole with discharge at roller surface.Developed laser technology about the nineties again, laser beam has been focused on roller surface carry out roller texturing.This technology is called the texturing technology of the third generation.Adopt the CO of pulse
2Neodymium-doped yttrium-aluminum garnet crystal (Nd:YAG) laser instrument of laser instrument or acousto-optic modulation carries out helical scanning with the laser that focuses on roll crown, the texturing hole that produces a rule from the teeth outwards distributes.
Laser roughening is compared with shot-peening or electric spark, and it is regular that the texturing hole distributes, and (and the former is a random distribution), and decorative pattern is adjustable; In hitting the process in hole, also experienced heat treatment in addition, thereby case hardness increases to some extent also.The laser roughening device all is to adopt single laser focusing head, carries out single helical scan but up to the present.Thereby its shortcoming is that texturing efficient is low, and used time of texturing is oversize, expects naturally adopting a plurality of optically focused heads for this reason.Because the spacing in texturing hole is generally 150-200 μ m, with the laser roughening device of mean power hectowatt grade with single optically focused head to line up such array be impossible, if adopt the texturing of a few stature subregion, because the difference of several roads laser and the linking difficulty of zones of different, the uniformity of texturing is very poor.
Summary of the invention:
The utility model adopts a kind of focusing head array of large scale in order to solve the difficulty in the above-mentioned technology formerly, produces intensive texturing hole dot matrix, realizes the texturing to the texturing roll.The different texturings hole that discrepant laser beam is produced mixes distribution, and the texturing time is shortened greatly.
The concrete structure of the utility model laser roughening device as shown in Figure 1.Comprise: Digit Control Machine Tool 7, roll rotating shaft 701 that is parallel to each other and guide rail 702 on the Digit Control Machine Tool 7, be seated in the workbench 1 (can do three-dimensional motion) on the guide rail 702, be seated in the little mobile platform 101,102,103,104,105 that K 〉=1 relative position on the workbench 1 can move; Contain the focusing head array 2 that the optically focused head 201,202,203,204,205,206 of condenser is formed by K 〉=2.K 〉=2 optical fiber 3 that is connected with the input of K 〉=2 an optically focused head 201,202,203,204,205,206 all is connected the light beam output of beam splitter 4.On the light path between beam splitter 4 light beam inputs and the laser instrument 6, laser amplifier 5 is arranged.Each little mobile platform 101,102,, on 103,104,105, put an optically focused head 201,202,203,204,205,206.Can directly be fixed on the workbench 1 for first optically focused head 201, other optically focused head 202,203,204,205,206 is separately fixed on the little mobile platform 101,102,103,104,105, shown in Fig. 1-2, Fig. 2-1, Fig. 3-1, Fig. 4, Fig. 5-1, Fig. 6, Fig. 7-2.Optically focused head above each little mobile platform drives can be done little relatively displacement with respect to first fixing optically focused head 201, adjusts the relative position between them, just can obtain difform focusing head array 2.So, K 〉=2 an optically focused head is arranged, and on workbench 1, has K 〉=1 a little mobile platform just enough.
The formation of the said focusing head array of being made up of K 〉=2 an optically focused head 201,202,203,204,205,206 2 can be a rectangle, shown in Fig. 1-2; Or oblique parallelogram, as Fig. 5-1 and shown in Figure 6; Or linear, shown in Fig. 2-1, Fig. 3-1 and Fig. 7-2.
Aforesaid the utility model laser roughening device will treat that at first texturing roll 8 is contained in the roll rotating shaft 701 of Digit Control Machine Tool 7.First optically focused head 201 directly is fixed on the workbench 1, other optically focused head 202,203,204,205,206 are seated in the little mobile platform 101 on the workbench 1,102,103,104, on 105, adjusting is seated in the optically focused head on the little mobile platform and the relative position of first optically focused head, after forming the formation of desired focusing head array 2, fixed-site with each little mobile platform, move the workbench 1 on (can adjust automatically) guide rail 702 again, make the centrally aligned of first optically focused head 201 on the steady job platform 1 be seated in the initial position for the treatment of texturing roll 8 (0 position) in the roll rotating shaft 701 by Digit Control Machine Tool 7.And the focus that makes the optically focused head on all focusing head arrays 2 is all burnt on the surface for the treatment of texturing roll 8.After laser amplifier 5 amplifies, be divided into K 〉=2 bundle light through beam splitter 4 by laser instrument 6 emitted laser bundles again, be input into respectively in the optically focused head of K 〉=2, laser is focused on the surface for the treatment of texturing roll 8, form the texturing hole by the optically focused head by K 〉=2 optical fiber 3.Treat that by Digit Control Machine Tool control roll rotating shaft 701 drives texturing roll 8 rotates, workbench 1 at the uniform velocity moves along guide rail simultaneously.The laser spot of optically focused head output is being treated the 8 surperficial enterprising line scannings of texturing roll, and this just forms equally distributed texturing hole array on the surface for the treatment of texturing roll 8.As Fig. 1-3, Fig. 1-4, Fig. 2-2 is shown in Fig. 3-2 and Fig. 5-2.
The position of said structure each optically focused head before the texturing device starts is to be mixed up automatically by Digit Control Machine Tool, and after the startup, workbench 1 drives all optically focused heads and all moves along guide rail (X-direction) with same speed (large platform).Laser instrument 6 is high repetitively pulsed lasers.After beam splitter 4 beam splitting, each road laser beam will reach the nearly hectowatt of mean power and could light beam be focused on by the optically focused head and treat on the texturing roller surface, forms the texturing hole.Therefore the laser by laser instrument 6 outputs will amplify laser power through laser amplifier 5.The rotating speed that is installed in the roll rotating shaft 701 on the Digit Control Machine Tool 7 is n (1/ second), by the encoder on the Digit Control Machine Tool 7 angle information is input in the Digit Control Machine Tool, and the workbench of putting the optically focused head simultaneously is being that the axis X direction moves along guide rail at the uniform velocity.
When having only an optically focused head for the laser roughening device, laser spot is treating to produce single helical scan on texturing roll 8 surfaces during work, can produce two kinds of dot matrix texturing hole distribution: Fig. 1-3 by program control, Fig. 1-4 is exactly the dot matrix expanded view of the texturing hole distribution of single optically focused head scanning generation, and the dot matrix of their corresponding rectangles of difference and rhombus distributes.In the rectangular lattice shown in Fig. 1-3 in the dot matrix of texturing hole minimum unit be rectangle a * b, Fig. 1-4 dot matrix minimum unit is a rhombus, rhombus is 2a * b at X and Y to diagonal.S is the pitch in texturing hole among Fig. 1-3 and the 1-4, and p is adjacent two the pulse focuses of laser distances (laser pulse Y is to a distance) between the texturing hole that produces on the roller surface.Frequency f=π the D/pn of laser pulse modulation, optically focused head be along directions X point-to-point speed v=sn, the long L required time of texturing T=L/ (sn).Below require to produce texturing hole dot matrix be Fig. 1-3 and Fig. 1-4 o'clock in narration, adopts the situation of laser focusing head array of the present utility model.
1. when being linear for the array of optically focused head (abbreviating optically focused head linear array as):
Fig. 2-1 is two optically focused heads that k=2 arranges in the x direction.The center of first optically focused head 201 is O, and the center of second optically focused head 202 is set at Δ x=Ns+a apart from the distance of the center of first optically focused head 201, and N is an integer, and Δ x minimum range is as the criterion can place two optically focused heads.Setting laser pulse y is b to a distance in Digit Control Machine Tool 7.Treat that texturing hole dot matrix is a * b, and pitch s=2a, the dot matrix expanded view that Fig. 2-2 distributes for the texturing hole.Texturing time T=L/ (ns)=L/ (2na), therefore used than the single optically focused head time shortens one times.
Fig. 3-1 is two optically focused heads that k=2 arranges in the y direction.The center of first optically focused head 201 is O, and the center of second optically focused head 202 is set at Δ y=Mp+b apart from the distance of the center of first optically focused head 201, and M is an integer, and Δ y minimum range is as the criterion can place two optically focused heads.Laser pulse y to point apart from being p=2b.Treat that the texturing dot matrix is a * b, and pitch s=a, this moment, pulse frequency f=π Dn/2b reduced by one times, if it is constant to keep laser state, be that modulating frequency is constant, roll rotational speed should be doubled n '=2n, texturing time T like this '=L/ (a2n) is also than adopting the used time of single optically focused head to shorten one times.Fig. 3-the 2nd, the expanded view in texturing hole.
If K 〉=2 an optically focused head is formed a linear array, the distribution of K optically focused head should be O, Ns+a, 2 (Ns+a) ... (K-1) (Ns+a).Set pitch s=ka, apart from P=b, wherein a * b is for treating the texturing dot matrix to laser pulse point for y, and the texturing time ratio adopts the used time of single optically focused head will shorten K-1 doubly, i.e. K 〉=2 a used time T of optically focused head '=T/K.
2. " the individual focusing head array for K=K ' * K
" the array of figure that individual optically focused head is formed that Fig. 4 provides K ' * K.(wherein K ' 〉=1, K " 〉=1) at directions X, the separation delta X=Ns+a at two optically focused head centers is in the y direction; the separation delta y=Mp+b of two laser heads; and setting texturing hole lattice distance in numerical control machine is a * b, sets pitch s=k ' a, and the pulse laser focus makes progress point apart from p=k ' b at y.(i) the same if set the rotating speed of roll rotating shaft 701 with single optically focused head situation, the 1/K when then laser pulse frequency f=π Dn/ (k " b) is single convergent pencil of rays " times.This moment, the point-to-point speed of workbench 1 was that v=k ' an increases (k '-1) doubly than single optically focused head speed, therefore shortened K '-1 times than the single optically focused capillus time.(ii) if set the rotation speed n of roll rotating shaft 701 '=k " n, this moment laser pulse frequency to produce the texturing hole the same apart from the pulse frequency f of b with single optically focused head y direction, but focusing head array 2 point-to-point speed v=
K ' k " an increases (k ' k "-1) doubly than single optically focused head speed, thus the texturing time shorten to the single optically focused head time 1/ (k ' k ") doubly.
3. produce K=2 * 2 focusing head array that rhombohedral lattice texturing hole distributes
The texturing hole that above-mentioned array optically focused head produces distributes and is all the rectangular lattice distribution.Cheating the rhombohedral lattice distribution of making a living that distributes if change texturing, is the example explanation with 2 * 2 focusing head arrays.Fig. 5-1 provides the distribution of K=4 optically focused head, optically focused head 201 and 202 in twos on directions X, 203 and 204 centre distance is Δ x=Ns+2a, optically focused head 201 and 203 in twos on the y direction, 202 and 204 centre distance is Δ y=Mp+b/2, and the center translation of the relative 202 optically focused heads with 204 in the center of 203 relative 201 optically focused heads is all a on the x direction, and being set in x direction pitch is s=4a, the point of y direction laser pulse focus is apart from p=b, and consequent texturing hole distributes for rhombohedral lattice.Texturing hole shown in Fig. 5-2 distributes.Optically focused is after translation Ns+4a distance, and the texturing hole presents uniform rhombohedral lattice and distributes.What rhombohedral lattice X, Y diagonal were 2a and b with shown in Fig. 1-4 of single optically focused head is the same, in this case, laser pulse frequency is constant, focusing head array 4 times when the x point-to-point speed increases to single optically focused head,, i.e. the texturing time shortens to 1/4 times of single used time of optically focused head.
4. produce K=K ' * K " focusing head array of individual optically focused head that rhombohedral lattice texturing hole distributes
Under general situation, produce the texturing hole that rhombohedral lattice distributes, K ' * K " Fig. 6 is seen in arranging of individual optically focused head; this focusing head array is K ' * K " rank, wherein K ' is an arbitrary integer, K " are even number; at directions X two row optically focused head separation delta x=Ns+2a, set pitch s=2k ' a
In the Y direction, two row optically focused head separation delta y=MP+b/2, the point of setting laser pulse focus is an even number apart from P=K " b/2 (k "), even number line is with respect to odd-numbered line displacement a to the right, and the texturing of generation hole dot matrix is that rhombus distributes, and X and Y diagonal respectively are 2a and b, when (i) laser instrument 6 low frequencies turn round, when laser pulse frequency f=π Dn/ (k " b/2) (be that frequency is reduced to k "/2 times), the workbench point-to-point speed be V=2k ' (na) speed be 2k ' doubly, then the texturing time shortens to 1/2k ' doubly.In (ii) laser instrument 6 high frequencies when running: when keeping laser pulse frequency and the first sample of single optically focused, the rotating speed of roll rotating shaft 701 should be brought up to k " n/2, thereby workbench 1 point-to-point speed V=k ' k " (na) be shorten to 1/ the texturing time (k ' k ") times.
From the above mentioned, the most obvious benefit of the utility model array optically focused head has shortened the texturing time exactly, (k " * k ') order array optically focused head distributes with the texturing hole dot matrix of the same dense degree of single optically focused head if obtain; texturing efficient maximum can improve (k ' k ") times in use, the texturing hole that the laser beam that it will not gone the same way produces evenly distributes on microcosmic, therefore both make a few bundle laser beam performances and power inconsistent a bit, and also can not influence the macro-uniformity of frosted face.
The another one characteristics can reduce the requirement to laser pulse frequency (f) exactly.Selecting which type of laser instrument in laser roughening machine, also is very important, for example a) with the Nd:YAG laser instrument of acousto-optic Q modulation the time, if q-frequency can be reduced to below the 10KHz, just can solve the stability problem of each pulse, and the raising pulse energy.B) texturing device CO commonly used
2Laser instrument adopts machinery to transfer Q usually, if the modulating frequency of 10k-30KHz can be reduced to frequency when being the KHz magnitude, and the simplified apparatus and the stability of transferring Q greatly.C) under frequency requirement is not too high situation, can also directly utilize the semiconductor laser diode (LD) of pulse running.The volume that this will improve energy efficiency greatly and reduce the texturing device, the structure of employing the utility model texturing device just can be accomplished above-mentioned 3 points, accomplishes the modulating frequency of laser instrument 6 is required to reduce.Therefore laser instrument 6 is in operation and can stably works, and the texturing hole distributes also more even.
Description of drawings:
Fig. 1 is the structure and the single optically focused capillus hole dot matrix schematic diagram of laser roughening device of the present utility model.
Fig. 1-the 1st wherein, the laser roughening apparatus structure schematic diagram of the utility model poly shaven head.
Fig. 1-2 is the focusing head array schematic diagram.
Fig. 1-the 3rd, single optically focused capillus hole is distributed as rectangular lattice and launches schematic diagram.
Fig. 1-the 4th, single optically focused capillus hole distribution rhombohedral lattice launches schematic diagram.
Fig. 2 be the formation of focusing head array be level linear and texturing after the dot matrix that distributes of texturing hole launch schematic diagram.Fig. 2-the 1st wherein, the schematic diagram of two optically focused heads (linear array) of arranging along directions X.
Fig. 2-the 2nd treats that texturing hole distribution dot matrix launches schematic diagram on the texturing roller surface.
Fig. 3 is that the formation of focusing head array is a texturing hole distribution dot matrix exploded view after vertical line shape and the texturing.Wherein, Fig. 3-the 1st, the schematic diagram of the two optically focused heads (linear array) that the y direction is arranged.
Fig. 3-the 2nd treats that texturing hole distribution dot matrix launches schematic diagram on the texturing roller surface.
Fig. 4 is K=K ' * K " the rank focusing head array schematic diagram of arranging.
Fig. 5 is that focusing head array is that oblique parallelogram and texturing hole distribution dot matrix thereof launch schematic diagram.Wherein, Fig. 5-1 is K=2 * 2 rank focusing head array schematic diagrames that oblique parallelogram distributes
Fig. 5-the 2nd treats that texturing hole distribution rhombohedral lattice launches schematic diagram on the texturing roller surface.
Fig. 6 is K=K ' * K, and " focusing head array of optically focused head is the schematic diagram of oblique parallelogram.
Fig. 7 is in the specific embodiment, laser roughening device concrete structure schematic diagram.Wherein, Fig. 7-the 1st, the texturing device overall structure schematic diagram that specific embodiment is used.
Fig. 7-the 2nd, K=2 optically focused head is oblique line focusing head array schematic diagram in an embodiment.
The specific embodiment:
Structure as shown in Figure 7.Laser instrument 6 is the Nd:YAG crystal laser of acousto-optic modulation.Laser amplifier 5 is a Nd:YAG crystal laser amplifier.The outgoing laser beam wavelength is 1.06 μ m.Beam splitter 5 sees through by 50% and semi-transparent semi-reflecting dull and stereotyped 401 and one speculum 402 of 50% reflection constitutes.Shown in Fig. 7-1.The quantity K=2 of optically focused head is linear (oblique line) array, shown in Fig. 7-2.
Nd:YAG laser instrument 6 output beams of acousto-optic modulation are divided into two-way through beam splitter 4 after amplifying through laser amplifier 5, are input to respectively on two laser focusing heads 201 and 202 through two optical fiber 3 again.Wherein optically focused head 201 is fixed on the workbench 1, workbench 1 is by the driven by servomotor of Digit Control Machine Tool 7, another optically focused head 202 is installed on the little mobile platform 101 on the workbench 1, and little mobile platform 101 can be done X and the little translation (seeing Fig. 7-2) of Z direction on workbench 1.They are all controlled by Digit Control Machine Tool.Treat that texturing roll 8 is seated in the roll rotating shaft 701 on the Digit Control Machine Tool 7.The focus that is seated in the optically focused head 201,202 on the workbench 1 on the guide rail 702 on the Digit Control Machine Tool 7 is burnt just on the surface for the treatment of texturing roll 8.Earlier first optically focused head on the workbench 1 is focused on during work and treat to make on the texturing roll 8 position zero setting (first optically focused head 201 satisfies X=0), the little mobile platform 102 that moves second optically focused head 202 then makes it to satisfy between the center of two optically focused heads 201 and 202/X=a and Δ y=Mp+b/2 condition, after the locking, two optically focused heads move with workbench 1.The parameter of importing on Digit Control Machine Tool has: treat texturing roller diameter D=600mm, length L=1800mm, the point in texturing hole is apart from parameter a=160 μ m and b=180 μ m, pitch s=2a=320 μ m, the interpulse point of Laser Modulation is apart from p=b=180 μ m, the rotation speed n of roll rotating shaft 701=69 rev/min.Input parameter Δ x=180 μ m, Δ y=80mm+190 μ m.This moment f=12.3KHz.Texturing hole distribution dot matrix is the rhombus of 2a * b.Texturing time T=1.35 hour.If when only using an optically focused head 201, producing same texturing hole dot matrix is rhombus 2a * b, used texturing time T=2.7 hours.Therefore the used single used time of optically focused head of texturing time ratio of present embodiment has shortened one times.
Claims (2)
1. the laser roughening device of a poly shaven head, comprise: Digit Control Machine Tool (7), roll rotating shaft (701) that is parallel to each other and guide rail (702) on the Digit Control Machine Tool (7), place the last workbench (1) of guide rail (702), the optically focused head (201 that contains condenser, 202,203,204,205,206), laser instrument (6), treat that texturing roll (8) is seated in the roll rotating shaft (701), it is characterized in that on workbench (1), being equipped with the little mobile platform (101 that K 〉=1 relative position can move, 102,103,104,105), by K 〉=2 an optically focused head (201,202,203,204,205,206) form focusing head array (2), with K 〉=2 an optically focused head (201,202,203,204,205,206) K 〉=2 optical fiber (3) of input connection, the input of optical fiber (3) all is connected the light beam output of beam splitter (4), on the light beam input of beam splitter (4) and the light path between the laser instrument (6), laser amplifier (5) is arranged, each little mobile platform (101,102,103,104,105) on, put an optically focused head (201,202,203,204,205,206).
2. the laser roughening device of poly shaven head according to claim 1 is characterized in that the said focusing head array of being made up of K 〉=2 an optically focused head (201,202,203,204,205,206) (2) is a rectangle, or oblique flat shape quadrangle, or linear.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260945 CN2576401Y (en) | 2002-10-24 | 2002-10-24 | Laser frosting device of multiple focusing heads |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02260945 CN2576401Y (en) | 2002-10-24 | 2002-10-24 | Laser frosting device of multiple focusing heads |
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| CN 02260945 Expired - Lifetime CN2576401Y (en) | 2002-10-24 | 2002-10-24 | Laser frosting device of multiple focusing heads |
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| CN104551408A (en) * | 2014-12-23 | 2015-04-29 | 中国科学院力学研究所 | System and method for multi-beam synthesizing and focusing type roll surface texturing laser processing |
| CN109365993A (en) * | 2018-11-27 | 2019-02-22 | 江苏大学 | A kind of roller laser-texturing process equipment and its processing method |
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- 2002-10-24 CN CN 02260945 patent/CN2576401Y/en not_active Expired - Lifetime
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| CN100413631C (en) * | 2006-01-19 | 2008-08-27 | 华中科技大学 | Roller surface coarsening processing method using multiheaded high power laser and its device |
| CN103240523A (en) * | 2013-05-09 | 2013-08-14 | 武汉武钢华工激光大型装备有限公司 | Double-processing-head dot spacing numerical-control regulating device for fiber laser texturing |
| CN103240525A (en) * | 2013-05-09 | 2013-08-14 | 武汉武钢华工激光大型装备有限公司 | Multi-processing-head dot spacing numerical-control regulating device for fiber laser texturing |
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| CN103433623B (en) * | 2013-08-28 | 2016-02-17 | 武汉钢铁(集团)公司 | A kind of texturing process equipment |
| CN103433623A (en) * | 2013-08-28 | 2013-12-11 | 武汉钢铁(集团)公司 | Method and device for calibrating intervals between roughening points and roughening processing equipment |
| CN104439716A (en) * | 2014-11-17 | 2015-03-25 | 深圳锜宏伟科技有限公司 | Laser processing system and laser processing method |
| CN104551408A (en) * | 2014-12-23 | 2015-04-29 | 中国科学院力学研究所 | System and method for multi-beam synthesizing and focusing type roll surface texturing laser processing |
| CN109365993A (en) * | 2018-11-27 | 2019-02-22 | 江苏大学 | A kind of roller laser-texturing process equipment and its processing method |
| CN109365993B (en) * | 2018-11-27 | 2020-11-20 | 江苏大学 | Roller laser texturing processing equipment and processing method thereof |
| CN110961791A (en) * | 2019-12-24 | 2020-04-07 | 北京科技大学 | Electric spark and laser composite texturing device |
| CN110961791B (en) * | 2019-12-24 | 2021-10-19 | 北京科技大学 | Electric spark and laser composite texturing device |
| CN115070344A (en) * | 2022-03-23 | 2022-09-20 | 胡凌山 | Electrode current collector and preparation method thereof |
| CN115070344B (en) * | 2022-03-23 | 2024-01-19 | 胡凌山 | Electrode current collector preparation method and electrode current collector |
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