CN2853263Y - Laser process equipment for processing unregular burr point on surface circular of roller type - Google Patents
Laser process equipment for processing unregular burr point on surface circular of roller type Download PDFInfo
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- CN2853263Y CN2853263Y CN 200520130542 CN200520130542U CN2853263Y CN 2853263 Y CN2853263 Y CN 2853263Y CN 200520130542 CN200520130542 CN 200520130542 CN 200520130542 U CN200520130542 U CN 200520130542U CN 2853263 Y CN2853263 Y CN 2853263Y
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Abstract
The utility model discloses a laser process equipment for processing irregular deflecting frosted points on the surface periphery of the processed rollers, which relates to a laser process equipment for frost on the surface of rollers, in particular to a laser process equipment with the function of dealing with the irregular deflecting frosted points on the surface of the processed rollers. The utility model comprises a machine bed, a laser process equipment, and a pseudo-random time-delay mechanism which delays the output of the laser-outputting signals of the laser process equipment. Compared with the prior machines, the utility model has the advantages of that the laser frosted boards have better isotropic and better appearances and qualities. The laser process equipment of the utility model is capable of overcoming the shortages on the isotropism and appearance and quality of the frosted boards because of the irregular distribution of the frosted points which exist in the conventional machines.
Description
Technical field
The utility model relates to a kind of laser process equipment that is used for the surface of roller texturing, particularly a kind of laser process equipment with the surface of roller texturing that can process random texturing point.
Background technology
YAG laser roughening equipment is the cold roll laser process equipment of Inst. of Mechanics, CAS in the nineties research and development, as: China Patent No.: ZL 92113223.9, title: " high frequency modulation multy-pulse YAG laser engraving design system and processing method "; China Patent No.: ZL94220848.X, title: " laser process equipment that is used for the roller surface texturing ".Fig. 1 is the general structure schematic diagram of this equipment.This equipment adopts the high power laser impulse action of high repetition frequency in roller surface, produces the little hole of reinforcement (texturing point) of countless certain patterns on roll surface.This equipment class is similar to engine lathe.Its course of work is that spindle motor of machine tool drives the roll rotation, drives the laser head translation on the movable stand simultaneously, and acousto-optic power supply control laser instrument sends the laser pulse of fixed frequency, thereby gets the helix that is made of the texturing point of a uniform pitch on roll.Fig. 4 be the texturing point shape appearance figure that utilizes the cold roll surface that this method beats (about representative axially, represent circumferential up and down, down together), be referred to as uncontrollable distribution texturing point shape appearance figure, claim that correspondingly Fig. 1 is uncontrollable distribution laser roughening outfit of equipment structural representation.By finding out among the figure, the texturing dot spacing on each circle is equal substantially.This is because laser pulse frequency is fixed speed of mainshaft substantially constant.Because the control of the acousto-optic power supply of control laser instrument and the control of main axis rotation are separate, do not realize Synchronization Control, and speed of mainshaft steady speed precision are limited, causes the error of texturing point point distance.This error adds up on the whole piece helix, so the distribution of the texturing point between each circle does not have rule, but certain rule is arranged, and undulate distributes.
And for example: China Patent No.: ZL 00128273.5, title: " the surface of roller texturing laser-processing system with controlled distribution texturing point "; China Patent No.: ZL 00264774.5, title: " the laser processing device that is used for the surface of roller texturing " with controlled distribution texturing point.Fig. 2 is the general structure schematic diagram of this equipment.Fig. 5, Fig. 6 are the texturing point shape appearance figures that utilizes the cold roll surface that this method beats, this equipment is by adorning the incremental encoder of a high-accuracy high-resolution in the main shaft coaxial direction, and realizes the controlled distribution of roll surface texturing point with an industrial computer guide sound photoelectric source and movable stand.
Experiment shows that the distribution of texturing point is very big to the performance impact of texturing plate.Texturing plate with uncontrollable distribution texturing point, the performance of its each position and all directions thereof has than big-difference, also is that the isotropism of texturing plate is bad; Texturing plate with controlled distribution texturing point is compared with the texturing plate of uncontrollable distribution texturing point, has solved the uniformity problem that the texturing point of texturing plate distributes, in the same unit are of each correspondence the distribution of texturing point identical, its isotropism has bigger improvement.The equidirectional performance of its each corresponding position is consistent, but the performance of the different directions of each corresponding position still has than big-difference, and the performance difference of corresponding position and all directions thereof is not bigger for each.
More than the texturing point of two kinds of texturing plates distribute certain rule all arranged, make the outward appearance of texturing plate all directions inconsistent, directionality is arranged, and often needs the direction-free laser roughening plate of outward appearance in the reality.But existing equipment and processing method can't be processed the texturing point of random distribution at surface of roller.
The utility model content
For solving the problem that prior art exists, the utility model provides a kind of laser process equipment that is used to process the random texturing point of surface of roller circumference, it can improve in above-mentioned existing laser roughening process equipment and the method, because texturing point distributes certain rule, the deficiency of aspects such as the isotropism of the texturing plate that causes and presentation quality are arranged all; Thereby provide a kind of production to have the system of processing on better isotropic laser roughening plate surface.
The laser process equipment that is used to process the random texturing point of surface of roller circumference of the present utility model, it comprises the machine tool that drives the rotation of roller class workpiece, along axially movable laser processing device of roller class workpiece and pseudorandom time-delay mechanism, the pseudorandom time-delay mechanism includes single board computer, the time-delay interface card of the PC repertoire that provides complete, described time-delay interface card is made up of input interface, timer and output interface, single board computer is connected with timer by the PC/104 bus, and single board computer is connected with the RS232C interface; Input interface is used for the level conversion of input signal, and timer is used for producing time-delay, and its delay value is set by single board computer, and output interface is used for the conversion and the driving of output signal.
Further, the laser process equipment that is used to process the random texturing point of surface of roller circumference of the present utility model can also have following characteristics: described laser processing device comprises industrial computer, controlled distribution interface card, acousto-optic power supply, acousto-optic cell, the input signal interface of described pseudorandom time-delay mechanism with or control distribution interface card plug, the output signal interface of pseudorandom time-delay mechanism joins with the signal input part that the acousto-optic power supply is connected, and RS232C interface and industrial computer join.
The output and the input signal of described pseudorandom time-delay mechanism are pulse signal, and output signal is triggered by the rising edge of input signal, output after delaying time.
The delay time of output signal is changing by pseudo-random signal in the scope sometime.
The surface of roller texturing laser processing device of the random texturing point of circumference of the present utility model makes the axis rotation of roller class workpiece along self, make the axial uniform motion of laser beam along roller class workpiece, and timing is to the surface-emitting laser output signal of roller class workpiece, surface at roller class workpiece forms the texturing point, at every turn in the official hour scope, produce at random time-delay, make the texturing point form random distribution at the circumferencial direction of roller class surface of the work from face to roller class surface of the work emitted laser output signal.
The utility model is at existing surface of roller texturing laser process equipment---and increase the one dimension controlled quentity controlled variable by the device that pseudo-random signal changes in uncontrollable distribution laser roughening equipment and the controlled distribution laser roughening equipment, make the texturing point be the random distribution of one dimension.
The utility model is compared with processing method with prior art equipment and is had the following advantages:
1, the laser roughening plate surface of the utility model production has better isotropism;
2, the laser roughening plate surface of the utility model production has better presentation quality.
Description of drawings
Fig. 1 is uncontrollable distribution YAG laser roughening outfit of equipment structural representation;
Fig. 2 is a controlled distribution YAG laser roughening outfit of equipment structural representation;
Fig. 3 is that the utility model embodiment 1 described incremental encoder connects schematic diagram with main shaft;
Fig. 4 is a pseudorandom time-delay mechanism structural representation.
Fig. 5 is a pseudorandom time-delay mechanism program flow diagram.
Fig. 6 is the random distribution texturing point of a rectangle schematic diagram.
Fig. 7 is the random distribution texturing point of a rhombus schematic diagram.
Fig. 8 is controlled random distribution YAG laser roughening equipment control section block diagram;
Fig. 9 is a lathe movable stand upper strata light path schematic diagram.
Drawing label declaration: 1-roller to be processed; 2-light path protective cover; The 3-gas circuit; The 4-laser instrument; The 5-lathe head of a bed; The 6-monitor; 7, the 22-machine tool guideway; 8-lathe movable stand; The 9-laser head; The 10-feed rod; 11-lathe tailstock; 14-two dimension movable stand; 15-acousto-optic power supply; The 16-dead head; 17-servo longitudinal motor; The 18-ball-screw; The 19-Laser Power Devices; The 20-switch board; The 21-industrial computer; The 23-incremental encoder; 24-flexure strip shaft coupling; 25-incremental encoder installation sleeve; 26-machine tool chief axis gearbox; 27-machine tool chief axis cover; The 28-machine tool chief axis; The horizontal mobile governor motion of 29-; The 30-condenser lens; The 31-beam expanding lens; 32-speculum A; 33-speculum B; 34-speculum C; 35-speculum D; The 36-camera head; 37-coaxial-illuminating lamp; The 38-light path switching device; 39-B road laser instrument; 40-B road acousto-optic cell; 41-A road laser instrument; 42-A road acousto-optic cell; 43,44,45-light path protective jacket; 49-galvanometer assembly.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail:
In order to realize the random distribution of laser roughening, the scheme that present embodiment proposes is as Fig. 2, Fig. 3, Fig. 4, shown in Figure 8.The texturing process of the random texturing point of surface of roller adopts pseudorandom time-delay mechanism and pseudorandom arrangement for deflecting to realize.Also promptly in controlled distribution laser roughening equipment, increase controlled quentity controlled variable by the device that pseudo-random signal changes, make the texturing point be random distribution.So this equipment is also referred to as the surface of roller texturing laser-processing system of controlled random distribution texturing point.
The general structure schematic diagram of present embodiment is with shown in Figure 2 identical, and equipment is by the lathe head of a bed, and bed piece and switch board three parts are formed, and have and the stepless adjustable similar version of bidimensional numerically controlled lathe of machine spindle speed.The lathe head of a bed 5 comprises that frequency converter (model is iHF-7.5K), machine tool chief axis drive the incremental encoder 23 of variable-frequency motor (model is YVP-132M), machine tool chief axis gearbox 26 (speed reducing ratio is 7.5), machine tool chief axis 28 and machine tool chief axis cover 27, high-accuracy high-resolution (model is ZPJ-500A-25000, and revolution etc. divide 100,000 lines) and incremental encoder installation sleeve 25, chuck and lubricious system etc.Frequency converter is installed in the bottom of the lathe head of a bed 5, and it is electrically connected with the main shaft drives variable-frequency motor; The main shaft variable-frequency motor links to each other with machine tool chief axis through the machine tool chief axis gearbox; Machine tool chief axis one side is chuck fixedly, and chuck is used to the roller that is installed; Opposite side fixed main shaft cover 27, collar bush 27 (tape spool head) is threaded with machine tool chief axis 28 usefulness, and collar bush 27 is through 23 of flexure strip shaft coupling 24 and incremental encoders link to each other (guaranteeing that incremental encoder is contained in machine tool chief axis 28 coaxial direction); Incremental encoder 23 end face fixed increment encoder installation sleeves 25 also link to each other with machine tool chief axis gearbox 26 through installation sleeve.Lubricating system comprises lubricating pump, fuel tank and oil pipe etc., and lubricating system is used for lubricated machine tool chief axis gearbox.D/A interface card in the industrial computer 21 signals to frequency converter, and frequency converter drives spindle motor of machine tool and rotates together with roller, and rotating speed is stepless adjustable.The pulse signal of incremental encoder output reflection roller position of rotation when spindle motor rotates together with roller, pulse signal is passed to the controlled distribution interface card in the industrial computer 21, and machine is handled back control pseudorandom time-delay mechanism and servo longitudinal driver as calculated.Pseudorandom time-delay mechanism control Laser Power Devices 19.Servo longitudinal driver drives servo longitudinal motor 17 drives lathe movable stand 14 move left and right on machine tool guideway 22 through ball-screw 18.
Lathe bed comprises machine tool guideway 22, lathe two dimension movable stand 14, servo longitudinal motor 17, ball-screw 18 and dead head 16 etc.Described servomotor 17 (using model to be MDMA152A1A) and ball-screw 18 direct connections, servomotor 17 drive ball-screws 18 and drive movable stand 14 by screw and be slidingly matched with guide rail, and on guide rail 22 move left and right, and speed is stepless adjustable.Movable stand is two parts about in the of 14 minutes, the latter half is equipped with one the road or two-way acousto-optic power supply 15 and Laser Power Devices 19, and the first half is equipped with A road laser instrument and A road acousto-optic cell, B road laser instrument and B road acousto-optic cell, light path switching device, galvanometer assembly, laser beam expanding lens, beam reflection mirror, camera head, coaxial-illuminating lamp, horizontal mobile governor motion, laser head and light path protective jacket.
Fig. 9 is a lathe movable stand upper strata light path schematic diagram.Light path switching device is made of the total reflective mirror on low speed synchromotor, leading screw, guide rail, slide and the slide, and low speed synchromotor and leading screw are direct-connected, and leading screw, guide rail and slide constitute a transmission.The effect of light path switching device is the turnover light path, and the laser beam that B road laser instrument is sent enters the galvanometer assembly, enters laser beam expanding lens then.Laser beam expanding lens comprises divergent mirror and focus lamp, is made up of the multi-disc mirror, and it is identical with beam expanding lens in the general YAG laser process equipment to the effect of laser beam beam-expanding collimation except having, and can also eliminate optical aberration, reduces the dispersivity of laser beam.The beam reflection mirror is the light beam dichronic mirror, and the effect of light beam dichronic mirror is that the YAG laser to 1.06 μ m carries out the total reflection turnover and the visible light of wavelength 0.4～0.8 μ m is carried out half transmission of a half reflection or beam split in proportion.The beam reflection mirror is a completely reflecting mirror, completely reflecting mirror be used to the to transfer transmission direction of light beam.The beam reflection mirror is the light beam dichronic mirror, and the effect of light beam dichronic mirror is that the visible light to wavelength 0.4～0.8 μ m carries out half transmission of a half reflection or beam split in proportion.The light beam that coaxial-illuminating lamp 37 sends is a collimated light beam, does not collimate, and its effect is that imaging provides secondary light source to CCD.Horizontal mobile governor motion is made up of horizontal servomotor (model is MSMA042A1A), ball-screw, guide rail and slide, ball-screw, guide rail and slide constitute a transmission, it be contained in displacement transducer on the slide, laterally servo-driver and position PID adjuster constitute the spacing autotracking unit, tracking spacing can be set by the D/A interface card in the industrial computer.Condenser lens comprises laser condensing lens, protective glass, assist gas injection apparatus, and protective glass is installed in before the focus lamp, and its effect is the passage that cuts off laser condensing lens and the application point of laser on roll surface, makes laser condensing lens avoid polluting.The assist gas injection apparatus is an a kind of pair of gas circuit structure.In the laser roughening process, the metal of roller surface produces under the effect of laser and dissolves and the part vaporization, in order to make roll and rolled metal plate reach certain roughness, must make roller surface not only form pit and around pit, also should have the existence of boss, this boss be exactly by the metal that dissolves flow out pit solidify form.For this reason, one of gas circuit of assist gas injection apparatus be designed to optical axis in an angle, excursion is 30 ℃～75 ℃, and the motlten metal at laser action point place is blowed to a side.Another gas circuit of assist gas injection apparatus is with to assemble laser beam coaxial, and air-flow is introduced and is in before the protective glass, and it is not contaminated with protective glass that the air-flow that penetrates from this gas circuit nozzle is used to intercept the dust and the splash of laser and metal function.Laser condensing lens laser beam is focused on the effect of surface of the work in having general YAG laser process equipment, another effect is the pre-objective as the CCD imaging, the object lens of it and camera head are unified to constitute CCD image-forming objective lens system, and its advantage is the definition that horizontal mobile governor motion does not influence the CCD imaging when moving.Camera head comprises object lens, eyepiece and CCD camera, and the pattern that eyepiece is used for the roller surface of will handle through object lens images in the CCD pixel.Whole imaging system is actually a microscopie unit.A road acousto-optic cell is housed in the laser instrument of A road, B road acousto-optic cell is housed in the laser instrument of B road.It is dustproof that the light path protective jacket is used for light path, and it has three kinds of structures.The light path protective jacket is the metal sleeve of regular length, and its effect is to be used for the beam reflection mirror, and camera head is connected with light path between the coaxial-illuminating lamp; The light path protective jacket is fine-tuning undulatory metal cylinder or plastic barrel, and its effect is that the light path that is used between A road laser instrument, B road laser instrument, light path switching device, laser beam expanding lens and the beam reflection mirror connects; The light path protective jacket is made up of the metal sleeve of the regular length more than two sections or two sections, and its effect is to be used for the beam reflection mirror to be connected with light path between the condenser lens, is characterized in that the length of protective jacket can moving forward and backward and change with horizontal mobile governor motion.Laser Power Devices are used for to the laser instrument power supply and can guarantee that supply current is constant, and the acousto-optic power supply is by sending the light pulse that ultrasonic signal control laser instrument sends to acousto-optic cell.
Switch board 20 comprises industrial computer 21 (model is AWS-825P), servo longitudinal driver (model is MSDA153A1A), horizontal servo-driver (model is MSDA043A1A), cooling system and other bang-bang circuits etc.Fig. 8 is controlled random distribution YAG laser roughening equipment control section block diagram.A controlled distribution interface card, two electricity isolation two-way D/A interface cards (model is PCL-728) are housed on the AT-bus in the industrial computer.The pulse signal of incremental encoder output reflection roller position of rotation when spindle motor rotates together with roller, pulse signal is passed to the controlled distribution interface card in the industrial computer 21, and machine is handled back control pseudorandom time-delay mechanism and servo longitudinal driver as calculated.Pseudorandom time-delay mechanism control Laser Power Devices 19.Servo longitudinal driver drives servo longitudinal motor 17 drives lathe movable stand 14 move left and right on machine tool guideway 22 through ball-screw 18.A D/A interface card in the industrial computer 21 is sent out two paths of signals and is given laser power supply 15, control A road laser instrument 41 and B road laser instrument 39.Another piece D/A interface card in the industrial computer 21 is sent out one road signal and is given frequency converter, and frequency converter drives spindle motor of machine tool and rotates together with roller, and rotating speed is stepless adjustable; The D/A interface card is sent out another road signal and is given position PID adjuster.Laser and roll surface spacing autotracking unit are by formations such as industrial computer 21, position PID adjuster, inductance type non-contact displacement sensor (using model to be the ST-1 type), horizontal servo-driver and servomotor, ball-screw transmissions, it is a closed-loop control system, industrial computer 21 is set the spacing size, displacement transducer detects actual pitch, and servo-driver is operated in speed control method.Industrial computer 21 links to each other by the single board computer (model is PCM-3346F-00A2) in one road RS232C and the pseudorandom time-delay mechanism, is used to set maximum, the minimum of a value of random delay.Industrial computer 21 links to each other by the single board computer (model is PCM-3346F-00A2) in the pseudo-random signal generator in another road RS232C and the pseudorandom arrangement for deflecting, is used to set maximum, the minimum of a value of maximum, minimum of a value and the deflection amplitude of deflection frequency at random.Cooling system is made of water tank, water pump and temperature controller, and its effect is the cooling that is used for laser instrument.
Pseudorandom time-delay mechanism schematic diagram as shown in Figure 4.This device includes single board computer and PC/104 time-delay interface card.Single board computer (adopting the PC/104 module) provides the repertoire of complete PC.PC/104 time-delay interface card is made up of input interface, timer and output interface.Input interface is used for the level conversion of input signal; Timer is used for producing time-delay, and its value is set by single board computer; Output interface is used for the output signal level conversion and drives.PC/104 time-delay interface card is installed on the PC/104 expansion bus of single board computer.
The external signal of pseudorandom time-delay mechanism has three the tunnel: input, output and RS232C interface.Input signal and output signal all are pulse signals.Output signal is triggered by the rising edge of input signal, output after delaying time, and the pulsewidth of output signal is fixed, and its big I is by the RS232C interface setting.Delay time changes by pseudo-random signal in a certain scope, and maximum, minimum of a value can be passed through the RS232C interface setting.
Fig. 5 is a pseudorandom time-delay mechanism program flow diagram.Program is divided main program and interrupt service routine two parts.Main program is " parameter initialization " (calling in internal memory with setup parameters such as the pulsewidth in the external memory, maximum, minimum delay values) earlier, " send parameter " afterwards (sending the control parameter) to timer, wait for that then inquiring this time-delay finishes, call pseudo-random function afterwards and revise delay parameter, turn back to " sending parameter " then, so constantly circulation.Interrupt service routine is delivered to external memory and internal memory by the RS232C interface with setup parameters such as pulsewidth, maximum, minimum delay values, and main program is just revised delay parameter by new setup parameter afterwards.
The pseudorandom time-delay mechanism inserts after the signal of existing surface of roller texturing laser process equipment control laser output.Can be with reference to figure 8---controlled random distribution YAG laser roughening equipment control section block diagram.
Because speed of mainshaft substantially constant, when the signal of control laser output was controlled laser output again by the pseudorandom time-delay mechanism, the texturing point on the roll surface will form the random distribution of one dimension circumferential.The pseudorandom time-delay mechanism can not make the texturing point axially form the random distribution of one dimension.
Fig. 6 is the random distribution texturing point of a rectangle schematic diagram.Wherein left side figure is the situation of circumferential and axial random distribution amplitude when being zero; Right figure is that circumferential random distribution amplitude is non-vanishing, the situation when axial random distribution amplitude is zero.
Fig. 7 is the random distribution texturing point of a rhombus schematic diagram.Wherein left side figure is the situation of circumferential and axial random distribution amplitude when being zero; Right figure is that circumferential random distribution amplitude is non-vanishing, the situation when axial random distribution amplitude is zero.
The utility model is the limit laser wavelength not.The pseudorandom time-delay mechanism can be used for all kinds of laser instruments that are used for laser roughening with electric pulse control light pulse, as acousto-optic control continuous YAG laser, radio-frequency carbone dioxide laser; The pseudorandom arrangement for deflecting can be used for all kinds of laser instruments that are used for laser roughening, as YAG laser instrument, carbon dioxide laser.
Claims (2)
1. be used to process the laser process equipment of the random texturing point of surface of roller circumference, it comprises the machine tool that drives the rotation of roller class workpiece, along the axially movable laser processing device of roller class workpiece, it is characterized in that: also include the laser output signal that makes laser processing device and produce the pseudorandom time-delay mechanism of random delay output, described pseudorandom time-delay mechanism is for being provided with a single board computer that complete PC repertoire is provided, the time-delay interface card, described time-delay interface card is by input interface, timer and output interface are formed, single board computer is connected with timer by the PC/104 bus, and single board computer is connected with the RS232C interface.
2. the laser process equipment that is used to process the random texturing point of surface of roller circumference as claimed in claim 1, it is characterized in that: described laser processing device comprises industrial computer, controlled distribution interface card, acousto-optic power supply, acousto-optic cell, the input signal interface and the controlled distribution interface card of described pseudorandom time-delay mechanism join, the output signal interface of pseudorandom time-delay mechanism joins with the signal input part that the acousto-optic power supply is connected, and RS232C interface and industrial computer join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130542 CN2853263Y (en) | 2005-11-04 | 2005-11-04 | Laser process equipment for processing unregular burr point on surface circular of roller type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130542 CN2853263Y (en) | 2005-11-04 | 2005-11-04 | Laser process equipment for processing unregular burr point on surface circular of roller type |
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| CN2853263Y true CN2853263Y (en) | 2007-01-03 |
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| CN 200520130542 Expired - Fee Related CN2853263Y (en) | 2005-11-04 | 2005-11-04 | Laser process equipment for processing unregular burr point on surface circular of roller type |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511587A (en) * | 2016-06-17 | 2017-12-26 | 宝山钢铁股份有限公司 | A kind of laser gain material roughing method |
| CN107511588A (en) * | 2016-06-17 | 2017-12-26 | 宝山钢铁股份有限公司 | A kind of laser texturing method for realizing the uniformly random distribution of texturing point |
| CN109382923A (en) * | 2018-11-30 | 2019-02-26 | 上海运韩光电科技有限公司 | A kind of temperature control processing station for the processing of optical prism roller twill |
-
2005
- 2005-11-04 CN CN 200520130542 patent/CN2853263Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511587A (en) * | 2016-06-17 | 2017-12-26 | 宝山钢铁股份有限公司 | A kind of laser gain material roughing method |
| CN107511588A (en) * | 2016-06-17 | 2017-12-26 | 宝山钢铁股份有限公司 | A kind of laser texturing method for realizing the uniformly random distribution of texturing point |
| CN109382923A (en) * | 2018-11-30 | 2019-02-26 | 上海运韩光电科技有限公司 | A kind of temperature control processing station for the processing of optical prism roller twill |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070103 Termination date: 20111104 |