CN101537535A - Aplanatic light path control device of laser cutter - Google Patents
Aplanatic light path control device of laser cutter Download PDFInfo
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- CN101537535A CN101537535A CN 200910061692 CN200910061692A CN101537535A CN 101537535 A CN101537535 A CN 101537535A CN 200910061692 CN200910061692 CN 200910061692 CN 200910061692 A CN200910061692 A CN 200910061692A CN 101537535 A CN101537535 A CN 101537535A
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- cutting head
- laser cutting
- compensation mechanism
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Abstract
The invention provides an aplanatic light path control device of a laser cutter. The device comprises a laser source, a compensation reflector mechanism on the light path and a compensation mechanism driver thereof, a reflector on a laser cutting head, and the laser cutting head and a driver thereof. The compensation reflector mechanism and the laser cutting head share a linear guide rail pair on a cross beam, and the compensation mechanism driver and the laser cutting head driver share a transmission pair on the cross beam; and the motion direction of the compensation reflector mechanism is corresponding to that of the laser cutting head and the motion begins and stops at the same time, and the ratio of the motion velocity V1 of the compensation reflector mechanism on the cross beam linear guide rail pair and the motion velocity V2 of the laser cutting head on the cross beam linear guide rail pair is as follows: V1:V2=1:2. The motion distance of the compensation reflector mechanism is Y when the motion distance of the laser cutting head along the Y axis is 2Y, thus ensuring constant light path length.
Description
Technical field
The present invention relates to a kind of aplanatic light path control device of laser cutter, this device is the corollary apparatus of laser cutting machine, and is constant in order to keep the optical path length of transmission in the laser cutting process, and guaranteeing is effectively all having same cut quality in the range of work.
Background technology
In laser cutting process, since the influence of the beam divergence angle of laser own, the variation of the beam diameter size before optical path length variation can cause focusing on, the diameter of incident beam is big more, and the diameter of focus spot is more little.In order to reduce the variation that changes the focus spot size of bringing because of beam sizes before focusing on, take to increase the mode of aplanatism device, by compensation, the compensation light path is shortened to light path; Otherwise when near-end processing causes light path to reduce, the compensation light path is increased, thereby guarantee that optical path length is constant in the cutting process, guarantee in the arbitrfary point of cutting, its crudy unanimity.
At present, in the big width laser manufacture field, constant for guaranteeing the spot diameter size in the range of work, the modes that in the transmission light path, increase the compensatory reflex microscope base that adopt more, Chinese patent 200620144696.6 has provided a kind of compensation arrangement, this device increases independent driving mechanisms and motion guide rail pair, and not only complex structure, cost height and precision are not high.Particularly how to control compensation be not fully aware of to this device.
Summary of the invention
The objective of the invention is to relate to a kind of simple in structure, precision is high, beam Propagation quality height, guarantee the constant aplanatic light path control device of laser cutter of optical path length in the cutting process.
Technical scheme of the present invention: aplanatic light path control device of laser cutter of the present invention comprises that compensatory reflex illuminating apparatus structure on lasing light emitter, the light path and compensation mechanism thereof drive, speculum, laser cutting head and driving thereof on the laser cutting head, a line slideway auxiliary on its compensatory reflex illuminating apparatus structure and the shared crossbeam of laser cutting head, compensation mechanism driving and laser cutting head drive a transmission on the shared crossbeam; The direction of motion of compensatory reflex illuminating apparatus structure is consistent with the direction of motion of laser cutting head also to be begun simultaneously and stops, and the ratio between the movement velocity V2 on the crossbeam line slideway auxiliary is compensatory reflex illuminating apparatus structure: V1: V2=1: 2 at movement velocity V1 on the crossbeam line slideway auxiliary and laser cutting head.
Described aplanatic light path control device of laser cutter, laser cutting head drives and motor driven gear is all adopted in the compensation mechanism driving, and the output gear that output gear that laser cutting head drives and compensation mechanism drive all mates engagement with the driving rack that is installed on the crossbeam.
Described aplanatic light path control device of laser cutter, compensatory reflex illuminating apparatus structure comprises L type slide unit, on the L type slide unit carriage is arranged, the first compensatory reflex mirror and the second compensatory reflex mirror are vertically mounted on two arms of carriage mutually, with laser cutting head speculum on the laser cutting head on same horizontal plane, and the second compensatory reflex mirror is vertical with the laser cutting head speculum, L type slide unit is installed on the line slideway auxiliary of crossbeam with the slide of laser cutting head, the compensation mechanism drive motors is installed on the L type slide unit, and the output of compensation mechanism drive motors is installed output gear.
Described aplanatic light path control device of laser cutter, the gear ratio of the output gear that output gear that compensation mechanism drives and laser cutting head drive is 1: 2.
Described aplanatic light path control device of laser cutter, the output gear that compensation mechanism drives is identical with the number of teeth of the output gear that laser cutting head drives, and the rotating ratio of the rotating speed of compensation mechanism drive motors and laser cutting head drive motors is 1: 2.
Advantage of the present invention: laser cutting machine aplanatism control device of the present invention and laser cutting head assembly are installed on the public high accuracy line slideway, the installing space compactness; Shared same high accuracy transmission, the motion of compensatory reflex microscope base steadily can not influence the beam Propagation quality because of the position deviation in the microscope base motion process; Ratio between the movement velocity V2 on the crossbeam line slideway auxiliary is L type slide unit: V1: V2=1: 2 at movement velocity V1 on the crossbeam line slideway auxiliary and laser cutting head.Because two optical path compensation microscope bases and processing head kinematical direction are provided with in vertical direction, so the ratio of optical path compensation microscope base stroke and processing head stroke is 1: 2, to keep the optical path length from the laser generator to the laser cutting head to remain unanimity, make the scattered light spot diameter of laser fix, angle is constant, it is equal consistent that the focused spot diameter that cutting head forms and Jiao relate to, and can improve cut quality, especially improves greatly especially for thick sheet material cut quality.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the present invention when application state.
Fig. 2 is the optic path schematic diagram.
The specific embodiment
Further specify concrete structure of the present invention below in conjunction with accompanying drawing:
Fig. 1 is the overall structure schematic diagram of the present invention when application state:
The present invention mainly comprises lasing light emitter 11, laser cutting head speculum 9 on compensatory reflex illuminating apparatus structure on the light path 12 and compensation mechanism driving thereof, the laser cutting head 10, the driving 4 of laser cutting head, a line slideway auxiliary 1 on the shared crossbeam 13 of compensatory reflex illuminating apparatus structure and laser cutting head, compensation driving and laser cutting head drive the same transmission 2 on the shared crossbeam.
Fixedly line slideway auxiliary 1, tooth bar 2 on the crossbeam 13, slide 3 is installed on the line slideway auxiliary 1, with line slideway auxiliary 1 coupling, can slide on line slideway auxiliary 1.Slide 3 side fixed laser cutting heads 10 are installed laser cutting head drive motors 4 on the slide 3, travelling gear 4a is installed in the output of laser cutting head drive motors 4, travelling gear 4a and tooth bar 2 engagements that are installed on the crossbeam.
Compensatory reflex illuminating apparatus structure comprises L type slide unit 5, carriage 7, the first compensatory reflex mirror 8a that install on the L type slide unit 5 and light path 12 angles at 45 of lasing light emitter 11.The first compensatory reflex mirror 8a and the second compensatory reflex mirror 8b are vertically mounted on two arms of carriage 7 mutually, with laser cutting head speculum 9 on same horizontal plane, and the second compensatory reflex mirror 8b is vertical with laser cutting head speculum 9.L type slide unit 5 is installed on the line slideway auxiliary 1 of crossbeam with laser cutting head 10, compensation mechanism drive motors 6 is installed on the L type slide unit 5, the output gear 6a of compensation mechanism drive motors 6, output gear 6a and the laser cutting head driving rack 2 coupling engagements that are installed on the crossbeam 13, the direction of motion of L type slide unit 5 is consistent with the direction of motion of laser cutting head also to be begun simultaneously and stops, ratio between the movement velocity V2 on the crossbeam line slideway auxiliary is L type slide unit 5: V1: V2=1 at movement velocity V1 on the crossbeam line slideway auxiliary and laser cutting head: 2, realize optical path compensation.The implementation of its speed ratio relation has two kinds: a kind of output gear 6a of the L of being type slide unit and laser cutting head travelling gear 4a, adopt the identical number of teeth, and the rotating ratio of the rotating speed of compensation mechanism drive motors and laser cutting head drive motors is 1: 2.Another kind is that the output gear 6a of compensation mechanism driving and the gear ratio of the output gear 4a that laser cutting head drives are 1: 2, and the rotating speed of compensation mechanism drive motors is identical with the rotating speed of laser cutting head drive motors.
Optic path process of the present invention is: the Laser emission that lasing light emitter 11 is launched is to being positioned on the first compensatory reflex mirror 8a that installs L type slide unit 5 tops, reflex to laser cutting head speculum 9 by the second vertical with it compensatory reflex mirror 8b again, enter laser cutting head inside at last, focus on the workpiece to be processed by the focus lamp of laser cutting head inside.
Fig. 2 is the optic path schematic diagram
In process, when laser cutting head carries out far-end processing and causes light path to increase, L type slide unit 5 moves simultaneously in the same way with laser cutting head, because two compensating glass arranged direction are vertical with the processing head kinematical direction, so as shown in Figure 2, when laser cutting head during along Y direction move distance 2Y, compensatory reflex mirror 8a, 8b move distance are Y, thereby guarantee that optical path length is constant.
Be laser cutting head in the position 1. the time, light path L1=A+Y+B+Y+C=A+B+C+2Y;
When 1. laser cutting head moves to the position 2. the time from the position, the distance that laser cutting head moves is 2Y, and the distance that two compensatory reflex mirrors move is Y, light path L2=A+B+C+2Y, and optical path length is constant.Guarantee in the arbitrfary point of cutting, its crudy unanimity.
During laser cutting head work, rack and pinion drive mechanism drives the slide unit at two compensatory reflex mirror places and does motion in the same way, the ratio of movement velocity is: V1: V2=1: 2, to keep the optical path length from the lasing light emitter to the laser cutting head to remain unanimity, make the scattered light spot diameter of laser fix, angle is constant, and the focused spot diameter that laser cutting head forms relates to equal consistent with Jiao, can improve cut quality, especially improve greatly especially for thick sheet material cut quality.
Core of the present invention is that aplanatism compensatory reflex illuminating apparatus structure and laser cutting head assembly are installed on the lathe crossbeam, line slideway on the shared crossbeam supports, cooperated with same high accuracy transmission on being installed in crossbeam by separately transmission output, do axially-movable, realize aplanatism control.Therefore, shared line slideway support of every aplanatism compensatory reflex illuminating apparatus structure and laser cutting head assembly and same transmission, protection scope of the present invention all belonged to.
Claims (7)
1. aplanatic light path control device of laser cutter, comprise that compensatory reflex illuminating apparatus structure on lasing light emitter, the light path and compensation mechanism thereof drive, speculum, laser cutting head and driving thereof on the laser cutting head, it is characterized in that: a line slideway auxiliary on the shared crossbeam of compensatory reflex illuminating apparatus structure and laser cutting head, compensation mechanism driving and laser cutting head drive a transmission on the shared crossbeam; The direction of motion of compensatory reflex illuminating apparatus structure is consistent with the direction of motion of laser cutting head also to be begun simultaneously and stops, and the ratio between the movement velocity V2 on the crossbeam line slideway auxiliary is compensatory reflex illuminating apparatus structure: V1: V2=1: 2 at movement velocity V1 on the crossbeam line slideway auxiliary and laser cutting head.
2. aplanatic light path control device of laser cutter according to claim 1, it is characterized in that: laser cutting head drives and motor driven gear is all adopted in the compensation mechanism driving, and the output gear (6a) that output gear (4a) that laser cutting head drives and compensation mechanism drive all mates engagement with the driving rack (2) that is installed on the crossbeam (13).
3. aplanatic light path control device of laser cutter according to claim 1 and 2, it is characterized in that: compensatory reflex illuminating apparatus structure comprises L type slide unit (5), carriage (7) is arranged on the L type slide unit (5), the first compensatory reflex mirror (8a) is vertically mounted on two arms of carriage (7) mutually with the second compensatory reflex mirror (8b), with laser cutting head speculum (9) on same horizontal plane, and the second compensatory reflex mirror (8b) is vertical with laser cutting head speculum (9), L type slide unit (5) is installed on the line slideway auxiliary (1) of crossbeam with the slide (3) of laser cutting head, L type slide unit (5) is gone up compensation mechanism drive motors (6) is installed, and the output of compensation mechanism drive motors (6) is installed output gear (6a).
4. aplanatic light path control device of laser cutter according to claim 2, it is characterized in that: the output gear (6a) that compensation mechanism drives is 1: 2 with the gear ratio of the output gear (4a) that laser cutting head drives, and the rotating speed of compensation mechanism drive motors is identical with the rotating speed of laser cutting head drive motors.
5. aplanatic light path control device of laser cutter according to claim 3, it is characterized in that: the output gear (6a) that compensation mechanism drives is 1: 2 with the gear ratio of the output gear (4a) that laser cutting head drives, and the rotating speed of compensation mechanism drive motors is identical with the rotating speed of laser cutting head drive motors.
6. aplanatic light path control device of laser cutter according to claim 2, it is characterized in that: the output gear (6a) that compensation mechanism drives is identical with the number of teeth of the output gear (4a) that laser cutting head drives, and the rotating ratio of the rotating speed of compensation mechanism drive motors and laser cutting head drive motors is 1: 2.
7. aplanatic light path control device of laser cutter according to claim 3, it is characterized in that: the output gear (6a) that compensation mechanism drives is identical with the number of teeth of the output gear (4a) that laser cutting head drives, and the rotating ratio of the rotating speed of compensation mechanism drive motors and laser cutting head drive motors is 1: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910061692 CN101537535A (en) | 2009-04-17 | 2009-04-17 | Aplanatic light path control device of laser cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910061692 CN101537535A (en) | 2009-04-17 | 2009-04-17 | Aplanatic light path control device of laser cutter |
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| CN101537535A true CN101537535A (en) | 2009-09-23 |
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| CN 200910061692 Pending CN101537535A (en) | 2009-04-17 | 2009-04-17 | Aplanatic light path control device of laser cutter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759762A (en) * | 2015-03-31 | 2015-07-08 | 苏州汇能激光科技有限公司 | Extruding aluminum cross beam for laser cutting machine and production process |
| CN104874921A (en) * | 2015-04-30 | 2015-09-02 | 武汉薪火智能切割机器有限公司 | CO2 laser cutting platform with light path adjusting system |
| CN107627033A (en) * | 2017-10-31 | 2018-01-26 | 苏州天弘激光股份有限公司 | A kind of Laser cutting equipment for light-guiding pillar |
-
2009
- 2009-04-17 CN CN 200910061692 patent/CN101537535A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759762A (en) * | 2015-03-31 | 2015-07-08 | 苏州汇能激光科技有限公司 | Extruding aluminum cross beam for laser cutting machine and production process |
| CN104874921A (en) * | 2015-04-30 | 2015-09-02 | 武汉薪火智能切割机器有限公司 | CO2 laser cutting platform with light path adjusting system |
| CN107627033A (en) * | 2017-10-31 | 2018-01-26 | 苏州天弘激光股份有限公司 | A kind of Laser cutting equipment for light-guiding pillar |
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Open date: 20090923 |