CN101804506A - Swinging-focal spot laser roller surface texturing method and device - Google Patents
Swinging-focal spot laser roller surface texturing method and device Download PDFInfo
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- CN101804506A CN101804506A CN 201010140171 CN201010140171A CN101804506A CN 101804506 A CN101804506 A CN 101804506A CN 201010140171 CN201010140171 CN 201010140171 CN 201010140171 A CN201010140171 A CN 201010140171A CN 101804506 A CN101804506 A CN 101804506A
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Abstract
The invention discloses a swinging-focal spot laser roller surface texturing method, which is characterized in that: continuous laser beams output by a high-power continuous laser are focused on a certain working face of a prism which is rotating at a high speed and of which the included angles between the normal lines of the working faces and the prism axis are inconsistent; K paths of pulse laser beams which are transmitted in a direction vertical to the rotation direction of the prism and quickly swing are formed by the scanning and splitting of the prism; the K paths of pulse laser beams are focused by K integrated focusing heads to form K*N focal spots which swing quickly along the length direction of a rotating roller to texture the surface of the roller at the same time to form irregular textured spot distribution of alternately arranged K*N non-spiral scanning line-point matrixes on the surface of the roller, wherein K is more than or equal to 1, N is the number of the focal spots output by a single integrated focusing head correspondingly, and K*N is more than or equal to 2. When the roller processed by the method rolls a steel plate, scratches in the length direction of the steel plate are avoided, and the rolling quality of the steel plate is improved.
Description
Technical field
The invention belongs to surface of roller laser roughening process field, particularly a kind of swinging-focal spot laser roller surface texturing method and device.
Background technology
Texturing cold-reduced sheet with special surface pattern particularly has a wide range of applications in automobile and electrical appliance industry in manufacturing industry.The texturing cold-reduced sheet is by roll rolling form of surface after texturing is handled, so the surface appearance feature of texturing roll to processing performance influences such as the deep-draw of cold-reduced sheet, applications greatly.
Have good template, deep drawing quality, percentage elongation and coating performance in order to ensure cold-rolled steel sheet, in the cold-reduced sheet production technology, require that texturing is carried out on the surface of cold roll and handle, to roll out the texturing cold-rolled steel sheet that satisfies the requirement of user's special process.
Laser roller texturing technology is practical and advanced a kind of texturing technology in several texturing technology (comprising shot-peening texturing, electric spark texturing and electron beam texturing) of using now.
The laser roughening technology is that the high-energy after focusing on, the pulse laser beam of high repetition frequency are shone roller surface, utilize the high brightness of laser beam to form very high energy density at roller surface, the roller surface of laser focusing place is implemented heating, fusing and part vaporization, so that form small texturing hole at roller surface.Its basic principle is: to the high-energy-density (10 through particular modulation
4～10
6W/cm
2), high repetition frequency (10
3～10
4Inferior/second) pulse laser beam focus on, and make it act on the roller surface that rotates to form small molten bath; Blow assist gas simultaneously, the molten bath motlten metal is carried out extrusion moduling with certain orientation, pressure and flow; After the short laser pulse effect, little hole molten pool metal is cooling rapidly under roll self conduction of heat, forms the transformation hardening point of little hole and hole side ring shape boss structure.Meanwhile, the focusing pulse laser beam moves along the roll length direction, to finish the texturing process to whole roller surface.
At present, the laser roughening roll technology mainly is divided into two big classes: a class is to adopt solid Nd: the YAG laser roughening of YAG laser instrument, another kind of then is to adopt gas CO
2The CO of laser instrument
2Laser roughening.Its common feature is: adopt the Nd:YAG laser instrument of acousto-optic Q modulation or through the CO of particular modulation
2Laser instrument is processed the source as pulse laser, after laser Machining head focuses on, acts on the roller surface with certain rotating speed rotation by the pulse laser of light source output; In the process, laterally moving of laser Machining head cooperates rotatablely moving of roll, thereby distributes in the helical scanning line lattice texturing hole of roller surface formation uniform pitch.For example: Chinese patent " laser process equipment that is used for the roller surface the texturing " (patent No.: ZL94220848.X) with Chinese patent " the beam splitting type laser roughing modulation device " (patent No.: ZL200710041118.9).
The essential characteristic of above-mentioned laser roller texturing technology is: the texturing hole distributes at the helical scanning line of roller surface along a uniform pitch.(be generally 0.1～0.4mm) very for a short time with respect to roller diameter, can think: texturing hole on each circle of helical scanning line is distributed in along on the straight line of roll circumference direction because the pitch of helical scanning line; Therefore the hole of the texturing on the whole roll crown is distributed in along on the parallel lines of many equidistant (being pitch) of roll circumference direction.But generally speaking, the relative position distribution in the texturing hole between each circle is unfixed; Thereby on the roll length direction, the texturing hole is non-linear and distributes, and as shown in Figure 1, can think irregular basically.
There are two significant disadvantages in above-mentioned texturing hole distribution form:
1. though the laser roughening of roller surface hole is very shallow, but for large-area texturing cold-rolled steel sheet, still can feel significantly that there is equally distributed straight line in cold-rolled steel sheet going up (rolling along the roll circumference direction) along its length, then not have tangible straight line to distribute at the horizontal direction of cold-rolled steel sheet.
2. pull easy formation of the length direction of cold-rolled steel sheet, form along straight line cut very thin on the cold-rolled steel sheet length direction.Examine these cuts, find that most cuts appear in the straight line shape white space between the corresponding roller surface two circle texturings holes.Analyzing the reason that these straight line cuts form, is because in the linear white spaces between two circle texturings holes, roll is level and smooth, closely contacts between roll and the steel plate; If form iron filings in the steel plate rolling process, then these iron filings can not be absorbed by the texturing of roller surface hole, are present in all the time between steel plate and the roll, mark visible streak continuously.
After analyzing the origin cause of formation of above-mentioned phenomenon, we find: if the texturing of roller surface hole is not the linear distribution along the roll circumference direction, then above-mentioned phenomenon just can be avoided.
Summary of the invention
The present invention seeks to: for the problem that solves the prior art existence provides a kind of swinging-focal spot laser roller surface texturing method, this method can realize that focal spot is along the quick swing type texturing process of rotating on the roll length direction, distribute in the non-linear texturing hole of roller surface formation along its circumferencial direction, guarantee that with this roll handled by this method is when the rolled plate, can on the length direction of steel plate, not form cut, thereby improve the rolling quality of steel plate.
Technical scheme of the present invention is as follows: a kind of swinging-focal spot laser roller surface texturing method, it is characterized in that: the continuous laser beam of high power continuous wave laser output is focused on rotation at a high speed and certain working face inconsistent polygon prism of each working face normal direction and mirror axle clamp angle, form transmission direction along the K road pulse laser beam of swinging fast perpendicular to the direction of rotation of described polygon prism through polygon prism scanning beam split, via K integrated focusing head described K road pulse laser beam is focused on the back respectively again and form K * N focal spot along the quick swing of the roll length direction that rotates, texturing process is carried out on the breaker roll surface simultaneously, forming the staggered irregular texturing hole of K * N bar non-spiral scanning line lattice at roller surface distributes, K 〉=1 wherein, and N to be the focused light of the corresponding output of single integrated focusing head count K * N 〉=2.
Above-mentioned swinging-focal spot laser roller surface texturing method of the present invention, further implement texturing process according to following concrete steps breaker roll surface:
1) by roll rotating shaft on the Digit Control Machine Tool and top clamping roll;
2) start Digit Control Machine Tool, make roll by the rotating speed rotation of setting;
3) continuous laser beam of high power continuous wave laser output is entered in the polygon prism spectrophotometric device that is installed on the Digit Control Machine Tool workbench, and focus on through first focus lamp on certain working face of rotation at a high speed and the inconsistent polygon prism of each working face normal direction and mirror axle clamp angle;
4) this working face of polygon prism is bare headed with inswept successively K the branch of continuous laser beam in the high speed rotary course, K 〉=1; Each divides shaven head to accept a part of laser when laser is inswept, is equivalent to distribute a laser pulse to all branch shaven heads when inswept successively all branches of laser beam are bare headed; Just continuous laser beam is divided into the pulse laser output of K road during the polygon prism multiple scanning, and because the angle of each working face normal direction of described polygon prism and its mirror axle a is inconsistent, described every road pulse laser is simultaneously along swinging fast perpendicular to the direction of rotation of polygon prism;
5) the above-mentioned K road pulse laser beam of exporting in the polygon prism spectrophotometric device focuses on the back through K integrated focusing head respectively and forms K * N densely arranged and focal spot that swing fast along the roll length direction that rotates, N is that the focused light of the corresponding output of single integrated focusing head is counted K * N 〉=2.
6) under the centralized Control of Digit Control Machine Tool breaker roll rotating speed, polygon prism rotating speed, workbench point-to-point speed, described K * N the focal spot breaker roll of swinging fast along the roll length direction carries out texturing process simultaneously, forms the staggered irregular texturing hole of K * N bar non-spiral scanning line lattice at roller surface and distributes.
The present invention provides a kind of swinging-focal spot laser roller class surface texturing processing unit (plant) that can realize above-mentioned processing method simultaneously, this device can form the staggered irregular texturings hole of many non-spiral scanning line lattices and distribute on roll, and simple in structure, utilization ratio of laser energy is high.
A kind of swinging-focal spot laser roller class surface texturing processing unit (plant), comprise laser instrument and Digit Control Machine Tool, the workbench that drives by the translation guide rail is housed on the lathe bed of described Digit Control Machine Tool and is used to install the roll rotating shaft of roll and top, polygon prism spectrophotometric device and integrated focusing mechanism are housed on the described workbench; Wherein: laser instrument is the high power continuous wave laser, described polygon prism spectrophotometric device is by the high-speed electric expreess locomotive of first focus lamp, polygon prism, the rotation of driving polygon prism and K branchs bare headed composition, and described integrated focusing mechanism is a kind of integrated focusing head array of being made up of the individual integrated focusing head with integrated focusing function of K; The input of each integrated focusing head is corresponding one by one with the output of aforementioned K branch shaven head, and can correspondingly export N focal spot, K * N 〉=2, and K 〉=1; Each the working face normal direction and the mirror axle clamp angle of described polygon prism are inconsistent.
In the above-mentioned swinging-focal spot laser roller class surface texturing processing unit (plant), the face of described polygon prism is counted M 〉=5.
In the above-mentioned swinging-focal spot laser roller class surface texturing processing unit (plant), described first focus lamp is transmission-type focus lamp or reflective focus lamp.
In the above-mentioned swinging-focal spot laser roller class surface texturing processing unit (plant), be equipped with in described each integrated focusing head second focus lamp and with the N of the second focus lamp positioned opposite compact arranged condenser lens.
Perhaps, be equipped with in described each integrated focusing head second focus lamp and with the multiple-point focusing mirror of the second focus lamp positioned opposite, this multiple-point focusing mirror has N focus.
Perhaps, be equipped with second focus lamp in described each integrated focusing head, be positioned at that N on the second focus lamp emitting light path closely arranges and each other angled layout speculum and be positioned at the 3rd focus lamp on the reflected light path of a described N speculum.
In the above-mentioned swinging-focal spot laser roller class surface texturing processing unit (plant), described second focus lamp is transmission-type focus lamp or reflective focus lamp.
In the above-mentioned swinging-focal spot laser roller class surface texturing processing unit (plant), described K integrated focusing head is the arrangement of oblique line or other form, and the lateral separation between described adjacent two integrated focusing heads is N * Δ X, Δ X=50～500 μ m, and fore-and-aft distance is Δ Y.
Above-mentioned swinging-focal spot laser roller class surface texturing processing unit (plant) is when concrete work, the same with routine techniques, roll workpiece to be processed is by roll rotating shaft on the Digit Control Machine Tool and top clamping, and by roll rotating shaft driven rotary, its rotating speed is controlled by Digit Control Machine Tool.Workbench on the Digit Control Machine Tool can be done three-dimensional motion, and its point-to-point speed is controlled by Digit Control Machine Tool.Similarly, drive the high-speed electric expreess locomotive of polygon prism rotation, its rotating speed is also controlled by Digit Control Machine Tool.Described Digit Control Machine Tool adopts existing equipment, for example XL9 type numerically controlled lathe.
Advantage of the present invention is:
1. the inventive method and device are owing to adopt the polygon prism of particular design, realized the texturing process of many focusing light spot oscillating types, form the staggered irregular texturings hole of many non-spiral scanning line lattices at roller surface and distribute, make to no longer include level and smooth straight line between adjacent two row's texturings holes on the roller surface circumference.So the roll that employing the inventive method and device are produced is when rolled plate, can guarantee that the iron filings particle that may form in the operation of rolling is absorbed by staggered texturing hole on the roll circumference direction, and avoid on the length direction of steel plate, causing cut, thereby improved the steel plate rolling quality greatly.
2. swinging-focal spot laser roller class surface texturing processing unit (plant) provided by the invention also has following advantage simultaneously:
(1) adopt the continuous high power laser instrument as light source for processing, laser power can make full use of.Because Laser Processing integrated focusing head is a plurality of, so can realize the bull texturing process simultaneously; And technical not to the restriction of laser power, because present continuous wave laser can obtain very high power output, process velocity can obtain very high process velocity also without limits so simultaneously.
(2) adopt integrated focusing head technology, the continuous high power laser beam is divided into densely arranged multichannel focusing pulse laser beam output, do not need to adopt the light modulation rotating disk or carry out acousto-optic Q modulation with the output of acquisition pulse laser, so the utilization ratio of laser energy height.And simple in structure, volume is little, cost is low, long service life produce to be safeguarded easily.
(3) owing to adopt continuous high power laser instrument (the continuous CO of high power for example
2Laser instrument or YAG laser instrument) as light source for processing, laser power can make full use of, and technology maturation, need not special maintenance in the work, and assurance equipment moves reliably and with long-term.
(4) can further adopt parabolic reflector formula focus lamp to focus in the polygon prism sweep mechanism, rapid heat dissipation, thermal deformation is little, focal beam spot aberrationless, spherical aberration, working stability.
(5) because Digit Control Machine Tool adopts is that the digital control system of three-shaft linkage combines with the computer control of laser output power and pulse frequency, so can onlinely regulate, realize that texturing roll surface roughness and texturing hole distribution density is variable, and can realize the multiple distribution in roll surface texturing hole, good product quality.
In a word, swinging-focal spot laser roller class surface texturing processing unit (plant) utilization ratio of laser energy height of the present invention, simple, the long service life of overall structure, and working stability, working (machining) efficiency height, good product quality.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
The texturing hole distribution schematic diagram that Fig. 1 forms on roll for conventional laser texturing technology (the texturing hole is that linear distributes along the roll circumference direction, but is that non-linear distributes on the roll length direction);
Fig. 2 is the external structure schematic diagram of a kind of specific embodiment of the present invention;
Fig. 3 is the structural representation of polygon prism spectrophotometric device among Fig. 2 embodiment;
Fig. 4 is the schematic diagram (each the working face normal direction and the mirror axle clamp angle of described polygon prism are inconsistent) that polygon prism is realized the burnt spot wobble of poly among Fig. 3;
Fig. 5 is that the A-A of polygon prism described in Fig. 4 is to view;
Fig. 6 is the structural representation of integrated focusing head array among Fig. 2 embodiment;
Fig. 7 is the realization schematic diagram of single integrated focusing head among Fig. 2 embodiment;
Fig. 8 is the realization schematic diagram of the single integrated focusing head of second kind of specific embodiment of apparatus of the present invention;
Fig. 9 is the realization schematic diagram of the single integrated focusing head of the third specific embodiment of apparatus of the present invention;
Figure 10 is the realization schematic diagram of the single integrated focusing head of the 4th kind of specific embodiment of apparatus of the present invention;
Figure 11 is that swinging-focal spot laser roller class surface texturing processing unit (plant) provided by the invention distributes in the irregular texturing hole that roller surface forms.
The specific embodiment
Embodiment 1: a kind of specific embodiment that is illustrated in figure 2 as swinging-focal spot laser roller class surface texturing processing unit (plant) of the present invention, it comprises laser instrument 1 and Digit Control Machine Tool 3, described Digit Control Machine Tool 3 adopts conventional XL9 type Digit Control Machine Tool, the workbench 12 that drives by translation guide rail 303 is housed on its lathe bed and is used to install the roll rotating shaft 301 of roll 13 and top 302, and described roll rotating shaft 301 is parallel with translation guide rail 303 with top 302.Polygon prism sweep mechanism 4 and integrated focusing mechanism are housed on the described workbench 12, and described integrated focusing mechanism is made up of K=4 integrated focusing head (being respectively the first integrated focusing head 601, the second integrated focusing head 602, the 3rd integrated focusing head 603 and the 4th integrated focusing head 604); And described laser instrument 1 adopts the continuous CO of high power
2Laser instrument, its power output from 500～6000 watts continuous adjustable, laser output wavelength is 10.6 μ m (can certainly select the laser instrument of other kind according to actual needs, for example the Nd:YAG laser instrument).
As shown in Figure 3, the sweep mechanism of polygon prism described in the present embodiment 4 is made of jointly high-speed electric expreess locomotive 409 and four branch shaven heads 405,406,407,408 of the first reflective focus lamp 403, polygon prism 401,401 rotations of driving polygon prism.Polygon prism one side links to each other with high-speed electric expreess locomotive 409, rotation at a high speed under high-speed electric expreess locomotive 409 drives, and its rotating speed is by Digit Control Machine Tool 3 controls, and the rotating speed of high-speed electric expreess locomotive 409 is n=0.3～50,000 rev/min.In conjunction with Fig. 4, shown in Figure 5,401 number M=12 of polygon prism described in the present embodiment, each working face is fully reflecting surface, but the angle of the mirror axle a of the normal direction of each working face and polygon prism 401 is inconsistent.Described four branch shaven heads 405,406,407,408 are closely arranged, and the reflector space of 401 1 working faces of corresponding polygon prism is fan-shaped distribution.
In conjunction with shown in Figure 6, four integrated focusing heads, 601,602,603,604 oblique line shapes in the mechanism of integrated focusing described in the present embodiment composition array of arranging, the input of each integrated focusing head is corresponding one by one with the output of aforementioned four branch shaven heads 405,406,407,408.The internal structure of described each integrated focusing head is all identical, with the first integrated focusing head 601 is example, in conjunction with shown in Figure 7, as can be known its inside be provided with the second transmission-type focus lamp 7, be positioned at that N=3 on the second transmission-type focus lamp, 7 emitting light paths closely arranges and each other angled layout speculum 801,802,803 and be positioned at the 3rd transmission-type focus lamp 10 on the reflected light path of a described N=3 speculum.In conjunction with shown in Figure 6, the horizontal spacing in the integrated focusing mechanism between adjacent two integrated focusing heads is N * Δ X again, N=3, and longitudinal pitch is Δ Y; Δ X=50～500 μ m wherein.
In conjunction with Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and shown in Figure 11, method and the principle that adopts the foregoing description device breaker roll to carry out texturing process described, described method specifically is divided into following several steps:
1) by roll rotating shaft 301 on the Digit Control Machine Tool 3 and top 302 clamping roll 13, specifically as shown in Figure 2.
2) start Digit Control Machine Tool 3, make roll 13 by the rotating speed rotation of setting.The same with routine techniques, described roll 13 is by roll rotating shaft 301 driven rotary, and rotating speed is by Digit Control Machine Tool 3 controls; And described workbench 12 can be done three-dimensional motion, its motion is also by Digit Control Machine Tool 3 controls, polygon prism sweep mechanism 4 and integrated focusing mechanism move with workbench 12, and equal surperficial vertical with roll 13 of the optical axis of four integrated focusing heads 601,602,603,604.
3) continuous laser beam 2 of high power continuous wave laser 1 output is entered in the polygon prism spectrophotometric device 4, and focus on through the first reflective focus lamp 403 on certain working face of rotation at a high speed and each working face normal direction and the inconsistent polygon prism 401 of mirror axle a angle, specifically as shown in Figure 3.
4) this working face of polygon prism 401 forms the fan-shaped reflective scan light beam with certain angle θ with continuous laser beam in the high speed rotary course, and inswept successively 4 branch shaven heads 405,406,407,408, each divides shaven head to accept a part of laser when laser is inswept, is equivalent to distribute a laser pulse to all branch shaven heads when inswept successively all branches of laser beam are bare headed.Just continuous laser beam is divided into the output of 4 road pulse lasers during polygon prism 401 multiple scannings, specifically as shown in Figure 4.And because the angle of each working face normal direction of described polygon prism 401 and its mirror axle a is inconsistent, so when polygon prism 401 rotated at a high speed, described every road pulse laser was simultaneously along swinging fast perpendicular to the direction of rotation of polygon prism 401, specifically as shown in Figure 5.
5) in conjunction with Fig. 6, Fig. 7 (omits high-speed electric expreess locomotive 409 and four the branch shaven heads 404 that are connected polygon prism 401 1 sides among Fig. 7,405,407,408) shown in, above-mentioned 4 road pulse laser beams of exporting in the polygon prism spectrophotometric device are respectively through 4 integrated focusing heads 601,602,603,604 focus on, with the first integrated focusing head 601 is example, and describe as follows to described focusing process: enter laser pulse in the first integrated focusing head 601 at first after 7 conversion of the second transmission-type focus lamp in conjunction with shown in Figure 7, formation has parallel sweep light beam (distance L=f of the focus point O of the described second transmission-type focus lamp 7 to polygon prism 401 working faces of certain sweep length Δ L, f is the focal length of the described second transmission-type focus lamp 7), closely arrange and be mutually 3 speculums 801 of certain angle in described parallel sweep light beam the is inswept successively first integrated focusing head 601,802,803, make collimated light beam be divided into 3 bundles and be in the pulse laser beam of certain angle, these pulse laser beams and then focus on the back through the 3rd transmission-type focus lamp 10 and form N=3 densely arranged pulsed focal spot and export by guiding again.K=4 integrated focusing head then exported K * N=12 the focal spot of swinging fast along roll 13 length directions that rotate altogether.
6) under the centralized Control of Digit Control Machine Tool 3 breaker rolls 13 rotating speeds, polygon prism 401 rotating speeds, workbench 12 point-to-point speeds, described K * N=12 the focal spot breaker roll of swinging fast along roll 13 length directions 13 carries out texturing process simultaneously, form the staggered irregular texturing hole of K * N=12 bar non-spiral scanning line lattice on roll 13 surfaces and distribute, specifically as shown in figure 11.Owing to no longer include level and smooth straight line between adjacent two row's texturing holes on the roll 13 surperficial circumference, so the roll that employing said apparatus and method are produced is in rolled plate, can guarantee that the iron filings particle that may form in the operation of rolling is absorbed by staggered texturing hole on the roll circumference direction, and avoid on the length direction of steel plate, causing cut, thereby improved the steel plate rolling quality greatly.
Embodiment 2: as shown in Figure 2, this swinging-focal spot laser roller class surface texturing processing unit (plant) that present embodiment provides, its external structure is with embodiment 1, and difference is that it has replaced to the first transmission-type focus lamp 404 with the first reflective focus lamp 403 in the polygon prism sweep mechanism 4 of embodiment 1, and simultaneously the internal structure of four integrated focusing heads 601,602,603,604 is all redesigned.Be example specifically with the first integrated focusing head 601, present embodiment within it portion be provided with the second transmission-type focus lamp 7 and with the N=3 of the second transmission-type focus lamp, 7 positioned opposite compact arranged focus lamp 901,902,903, (omit high-speed electric expreess locomotive 409 and four the branch shaven heads 405,406,407,408 that are connected polygon prism 401 1 sides among Fig. 8) as shown in Figure 8.The operation principle of present embodiment is described as follows in conjunction with shown in Figure 8: the continuous laser beam 2 of laser instrument 1 output enters polygon prism sweep mechanism 4, focus on by the first transmission-type focus lamp 404 on certain working face of the polygon prism 401 of rotation at a high speed and form fan-shaped reflective scan light beam with certain angle θ, and inswept successively four branch shaven heads (omitting among the figure), thereby export 4 road pulse lasers, and same because the angle of each working face normal direction of described polygon prism 401 and its mirror axle a is inconsistent, described every road pulse laser is simultaneously along swinging fast perpendicular to the direction of rotation of polygon prism 401.Focus on through 4 integrated focusing heads 601,602,603,604 respectively from 4 road pulse laser beams of polygon prism spectrophotometric device 4 interior outputs.Be that example explanation focusing process is as follows with the first integrated focusing head 601 equally in the present embodiment: enter laser pulse in the first integrated focusing head 601 after 7 conversion of the second transmission-type focus lamp, formation has parallel sweep light beam (distance L=f of the focus point O of the described second transmission-type focus lamp 7 to polygon prism 401 working faces of certain sweep length Δ L, f is the focal length of the described second transmission-type focus lamp 7), a compact arranged N=3 focus lamp 901 in described parallel sweep light beam the is inswept successively first integrated focusing head 601,902,903, and after they focus on, form N=3 densely arranged pulsed focal spot output.The same with embodiment 1, K=4 integrated focusing head then exported K * N=12 the focal spot of swinging fast along roll 13 length directions that rotate altogether.Final under the centralized Control of Digit Control Machine Tool 3 breaker rolls 13 rotating speeds, polygon prism 401 rotating speeds, workbench 12 point-to-point speeds, described K * N=12 the focal spot breaker roll of swinging fast along roll 13 length directions 13 carries out texturing process simultaneously, form the staggered irregular texturing hole of K * N=12 bar non-spiral scanning line lattice on roll 13 surfaces and distribute, specifically as shown in figure 11.
Embodiment 3: as shown in Figure 2, this swinging-focal spot laser roller class surface texturing processing unit (plant) that present embodiment provides, its external structure is with embodiment 1, and difference is that it has replaced to the first transmission-type focus lamp 404 with the first reflective focus lamp 403 in the polygon prism sweep mechanism 4 of embodiment 1, and simultaneously the internal structure of four integrated focusing heads 601,602,603,604 is all redesigned.Be example specifically with the first integrated focusing head 601, present embodiment within it portion be provided with the second parabolic reflector formula focus lamp 5 and with the N=3 of the second parabolic reflector formula focus lamp, 5 positioned opposite compact arranged focus lamp 901,902,903, (omit high-speed electric expreess locomotive 409 and four the branch shaven heads 405,406,407,408 that are connected polygon prism 401 1 sides among Fig. 9) as shown in Figure 9.The operation principle of present embodiment is described as follows in conjunction with shown in Figure 9: the continuous laser beam 2 of laser instrument 1 output enters polygon prism sweep mechanism 4, focus on by the first transmission-type focus lamp 404 on certain working face of the polygon prism 401 of rotation at a high speed and form fan-shaped reflective scan light beam with certain angle θ, and inswept successively four branch shaven heads (omitting among the figure), thereby export 4 road pulse lasers, and same because the angle of each working face normal direction of described polygon prism 401 and its mirror axle a is inconsistent, described every road pulse laser is simultaneously along swinging fast perpendicular to the direction of rotation of polygon prism 401.Focus on through 4 integrated focusing heads 601,602,603,604 respectively from 4 road pulse laser beams of polygon prism spectrophotometric device 4 interior outputs.Be that example explanation focusing process is as follows with the first integrated focusing head 601 equally in the present embodiment: enter laser pulse in the first integrated focusing head 601 after 5 conversion of the second parabolic reflector formula focus lamp, formation has the parallel sweep light beam of certain sweep length Δ L, and (focus of the described second parabolic reflector formula focus lamp 5 overlaps with focus point O on polygon prism 401 working faces, f is the focal length of the described second parabolic reflector formula focus lamp 5), a compact arranged N=3 focus lamp 901 in described parallel sweep light beam the is inswept successively first integrated focusing head 601,902,903, and after they focus on, form N=3 densely arranged pulsed focal spot output.The same with embodiment 1, K=4 integrated focusing head then exported K * N=12 the focal spot of swinging fast along roll 13 length directions that rotate altogether.Final under the centralized Control of Digit Control Machine Tool 3 breaker rolls 13 rotating speeds, polygon prism 401 rotating speeds, workbench 12 point-to-point speeds, described K * N=12 the focal spot breaker roll of swinging fast along roll 13 length directions 13 carries out texturing process simultaneously, form the staggered irregular texturing hole of K * N=12 bar non-spiral scanning line lattice on roll 13 surfaces and distribute, specifically as shown in figure 11.
Embodiment 4: as shown in Figure 2, this swinging-focal spot laser roller class surface texturing processing unit (plant) that present embodiment provides, its external structure is with embodiment 1, and difference is that it has replaced to the first transmission-type focus lamp 404 with the first reflective focus lamp 403 in the polygon prism sweep mechanism 4 of embodiment 1, and simultaneously the internal structure of four integrated focusing heads 601,602,603,604 is all redesigned.Be example specifically with the first integrated focusing head 601, present embodiment within it portion be provided with the second parabolic reflector formula focus lamp 5 and with the multiple-point focusing mirror 14 of the second parabolic reflector formula focus lamp, 5 positioned opposite, described multiple-point focusing mirror 14 has N=2 focus, (omits high-speed electric expreess locomotive 409 and four the branch shaven heads 405,406,407,408 that are connected polygon prism 401 1 sides among Figure 10) as shown in figure 10.The operation principle of present embodiment is described as follows in conjunction with shown in Figure 10: the continuous laser beam 2 of laser instrument 1 output enters polygon prism sweep mechanism 4, focus on by the first transmission-type focus lamp 404 on certain working face of the polygon prism 401 of rotation at a high speed and form fan-shaped reflective scan light beam with certain angle θ, and inswept successively four branch shaven heads (omitting among the figure), thereby export 4 road pulse lasers, and same because the angle of each working face normal direction of described polygon prism 401 and its mirror axle a is inconsistent, described every road pulse laser is simultaneously along swinging fast perpendicular to the direction of rotation of polygon prism 401.Focus on through 4 integrated focusing heads 601,602,603,604 respectively from 4 road pulse laser beams of polygon prism spectrophotometric device 4 interior outputs.Be that example explanation focusing process is as follows with the first integrated focusing head 601 equally in the present embodiment: enter laser pulse in the first integrated focusing head 601 after 5 conversion of the second parabolic reflector formula focus lamp, formation has the parallel sweep light beam of certain sweep length Δ L, and (focus of the described second parabolic reflector formula focus lamp 5 overlaps with focus point O on polygon prism 401 working faces, f is the focal length of the described second parabolic reflector formula focus lamp 5), described parallel sweep light beam forms N=2 densely arranged pulsed focal spot output after multiple-point focusing mirror 14 focuses on.With embodiment 1 distinguish to some extent to be that K=4 integrated focusing in the present embodiment is first export K * N=8 altogether along roll 13 length directions that the rotate focal spot of swing fast.Final under the centralized Control of Digit Control Machine Tool 3 breaker rolls 13 rotating speeds, polygon prism 401 rotating speeds, workbench 12 point-to-point speeds, described K * N=8 the focal spot breaker roll of swinging fast along roll 13 length directions 13 carries out texturing process simultaneously, form the staggered irregular texturing hole of K * N=8 bar non-spiral scanning line lattice on roll 13 surfaces and distribute, specifically can be referring to shown in Figure 11.
Certainly the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.The all spiritual essence of main technical schemes is done according to the present invention equivalent transformation or modification all should be encompassed within protection scope of the present invention.
Claims (10)
1. swinging-focal spot laser roller surface texturing method, it is characterized in that: the continuous laser beam (2) of high power continuous wave laser (1) output is focused on rotation at a high speed and certain working face each working face normal direction and the inconsistent polygon prism of mirror axle (a) angle (401), form transmission direction along the K road pulse laser beam of swinging fast perpendicular to the direction of rotation of described polygon prism (401) through polygon prism (401) scanning beam split, via K integrated focusing head described K road pulse laser beam is focused on the back respectively again and form K * N focal spot along the quick swing of roll (13) length direction that rotates, texturing process is carried out on breaker roll (13) surface simultaneously, form the staggered irregular texturing hole of K * N bar non-spiral scanning line lattice distributes on roll (13) surface, wherein N is that the corresponding focused light of exporting of single integrated focusing head is counted K * N 〉=2.
2. swinging-focal spot laser roller surface texturing method according to claim 1 is characterized in that implementing texturing process by following concrete steps breaker roll surface:
1) by roll rotating shaft (301) on the Digit Control Machine Tool (3) and top (302) clamping roll (13);
2) start Digit Control Machine Tool (3), make roll (13) by the rotating speed rotation of setting;
3) continuous laser beam (2) of high power continuous wave laser (1) output is entered in the polygon prism spectrophotometric device (4) that is installed on Digit Control Machine Tool (3) workbench (12), and focus on through first focus lamp on the working face of rotation at a high speed and each working face normal direction and the inconsistent polygon prism of mirror axle (a) angle (401);
4) this working face of polygon prism (401) is bare headed with inswept successively K the branch of continuous laser beam (2) in the high speed rotary course, K 〉=1; Each divides shaven head to accept a part of laser when laser is inswept, is equivalent to distribute a laser pulse to all branch shaven heads when inswept successively all branches of laser beam are bare headed; Just continuous laser beam is divided into the pulse laser output of K road during polygon prism (401) multiple scanning, and because the angle of each working face normal direction of described polygon prism (401) and its mirror axle (a) is inconsistent, described every road pulse laser is simultaneously along swinging fast perpendicular to the direction of rotation of polygon prism (401);
5) the K road pulse laser beam of above-mentioned output in the polygon prism spectrophotometric device (4) respectively through K integrated focusing head focus on the back form K * N densely arranged and along the quick focal spot of swinging of roll (13) length direction that rotates, N is that the focused light of the corresponding output of single integrated focusing head is counted K * N 〉=2;
6) under the centralized Control of Digit Control Machine Tool (3) breaker roll (13) rotating speed, polygon prism (401) rotating speed, workbench (12) point-to-point speed, described K * N the focal spot breaker roll of swinging fast along roll (13) length direction (13) carries out texturing process simultaneously, forms the staggered irregular texturing hole of K * N bar non-spiral scanning line lattice on roll (13) surface and distributes.
3. one kind is used to realize the swinging-focal spot laser roller class surface texturing processing unit (plant) of processing method according to claim 1, comprise laser instrument (1) and Digit Control Machine Tool (3), workbench (12) that drives by translation guide rail (303) and roll rotating shaft (301) and top (302) that are used to install roll (13) are housed on the lathe bed of described Digit Control Machine Tool (3), polygon prism spectrophotometric device (4) and integrated focusing mechanism are housed on the described workbench (12); Wherein: laser instrument (1) is the high power continuous wave laser, described polygon prism spectrophotometric device (4) is by first focus lamp, polygon prism (401), the high-speed electric expreess locomotive (409) that drives polygon prism (401) rotation and K branch bare headed composition, and described integrated focusing mechanism is a kind of integrated focusing head array of being made up of the individual integrated focusing head with integrated focusing function of K; The input of each integrated focusing head is corresponding one by one with the output of aforementioned K branch shaven head, and can correspondingly export N focal spot, K * N 〉=2; Each the working face normal direction and mirror axle (a) angle that it is characterized in that described polygon prism (401) are inconsistent.
4. swinging-focal spot laser roller class surface texturing processing unit (plant) according to claim 3 is characterized in that the face of described polygon prism (401) is counted M 〉=5.
5. swinging-focal spot laser roller class surface texturing processing unit (plant) according to claim 3 is characterized in that described first focus lamp is transmission-type focus lamp or reflective focus lamp.
6. swinging-focal spot laser roller class surface texturing processing unit (plant) according to claim 3, it is characterized in that being equipped with in described each integrated focusing head second focus lamp and with N compact arranged condenser lens of the second focus lamp positioned opposite.
7. swinging-focal spot laser roller class surface texturing processing unit (plant) according to claim 3, it is characterized in that being equipped with in described each integrated focusing head second focus lamp and with the multiple-point focusing mirror of the second focus lamp positioned opposite, this multiple-point focusing mirror has N focus.
8. swinging-focal spot laser roller class surface texturing processing unit (plant) according to claim 3, it is characterized in that being equipped with second focus lamp in described each integrated focusing head, be positioned at that N on the second focus lamp emitting light path closely arranges and each other angled layout speculum and be positioned at the 3rd focus lamp on the reflected light path of a described N speculum.
9. according to claim 6 or 7 or 8 described swinging-focal spot laser roller class surface texturing processing unit (plant)s, it is characterized in that described second focus lamp is transmission-type focus lamp or reflective focus lamp.
10. swinging-focal spot laser roller class surface texturing processing unit (plant) according to claim 3, it is characterized in that described K integrated focusing head is the arrangement of oblique line or other form, and the lateral separation between adjacent two integrated focusing heads is N * Δ X, Δ X=50～500 μ m, fore-and-aft distance is Δ Y.
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| CN 201010140171 CN101804506A (en) | 2010-03-31 | 2010-03-31 | Swinging-focal spot laser roller surface texturing method and device |
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| CN 201010140171 CN101804506A (en) | 2010-03-31 | 2010-03-31 | Swinging-focal spot laser roller surface texturing method and device |
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Application publication date: 20100818 |