CN203738227U - Electromagnetic-aided laser drilling device - Google Patents
Electromagnetic-aided laser drilling device Download PDFInfo
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- CN203738227U CN203738227U CN201420064270.4U CN201420064270U CN203738227U CN 203738227 U CN203738227 U CN 203738227U CN 201420064270 U CN201420064270 U CN 201420064270U CN 203738227 U CN203738227 U CN 203738227U
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- mouse cage
- belt
- laser
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- main shaft
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Abstract
The utility model provides an electromagnetic-aided laser drilling device. The electromagnetic-aided laser drilling device comprises a laser generation unit, a work piece clamping unit, a rotating magnetic field generation unit and a drive unit. The work piece clamping unit comprises a main shaft, a bottom board, a first bearing and a mouse cage. The main shaft is fixedly installed on one side of the bottom board. The mouse cage is installed on the first bearing. A permanent magnet of the rotating magnetic field generation unit is compressed on a magnet clamp through a first screw. The drive unit is composed of a motor support, a motor, a belt pulley and a belt. The motor support is fixed to the bottom board. The motor is vertically installed on the motor support. A belt groove of the belt pulley and a belt groove of a clamp base are installed at the horizontal position. The belt is compressed on the belt groove of the belt pulley and the belt groove of the clamp base. By the adoption of the operation mode of rotating work pieces, the assisting effect of the magnetic field on laser drilling is enhanced. The motion of plasma and molten metal produced in the laser drilling process can be controlled by the rotating magnetic field, and the laser drilling effect is optimized.
Description
Technical field
The utility model belongs to field of laser processing, is specifically related to a kind of electromagnetism auxiliary laser perforating device.
Background technology
In machining, hole processing is one important manufacturing procedure that accounting is larger, along with the miniaturization of part, produce quantitatively, common machine drilling method is difficult to realize large batch of aperture, the manufacture of micropore, laser boring is one of the key technology in Modern Manufacturing Technology field, it is large that laser boring has punching aspect ratio compared with other drilling methods, contactless, without tool loss, process velocity is fast, areal deformation is little, can process the remarkable superiority such as various materials, can meet well the requirement of Modern Industry Products processing, be widely used, the for example processing of aircraft engine wormwheel blade louvre.
Existing laser boring method is generally that laser beam is focused on to following certain position of surface of the work or surface, with sufficiently high power density heating and melting material, material ejects and reaches the object that material is removed with liquid and gaseous form subsequently, in this process, conventionally punch position inject high pressure assist gas with improve perforating efficiency and punching effect.But existing laser boring method has following shortcoming: 1. laser drilling process ionic medium screen effect is serious, causes the loss of laser energy; 2. after processing there is the recast layer of uneven thickness and affect the quality in hole in hole wall; 3. the impulsive force that produces in the laser drilling process of high-energy long pulse is excessive causes the hole repeatable accuracy that processes low, and hole wall exists micro-crack, and the difficult quality in hole improves.
The method of existing magnetic field assistant laser welding and unit in prior art although (such as the patent No. Chinese invention patent " a kind of magnetic field assistant laser welding unit " that is 200410101556.6), but because laser weld is different from the feature of punching, can not be applicable to laser boring for the unit of laser weld.
Utility model content
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of electromagnetism auxiliary laser perforating device; This device has adopted the working method of workpiece rotation, and magnetic field is strengthened the auxiliaring effect of laser boring; Simultaneously rotating excitation field can also be controlled the plasma that produces in laser drilling process and the motion of motlten metal, has optimized laser boring effect.
The utility model is achieved by the following technical solution:
A kind of electromagnetism auxiliary laser perforating device, comprises laser generating unit, clamping workpiece unit, rotating excitation field generation unit and driver element;
Described laser generating unit comprises laser instrument and condenser lens, acts on the surface of workpiece to be processed after the laser beam line focus lens focus of laser instrument output;
Described clamping workpiece unit comprises main shaft, base plate, clutch shaft bearing and mouse cage; Described main shaft is fixedly mounted on a side of base plate, and main shaft is multidiameter, and on main shaft, shaft part is provided with clutch shaft bearing, and mouse cage is arranged on clutch shaft bearing;
Described mouse cage is made up of the 3rd screw, mouse cage top board, copper post and mouse cage base plate, mouse cage top board is connected with mouse cage base plate by copper post, and copper post forms a circle, and is uniformly distributed, the 3rd screw is positioned on mouse cage top board, and workpiece to be processed is fixed on mouse cage by the 3rd screw;
Described rotating excitation field generation unit comprises the first screw, magnet fixture, permanent magnet, the second screw, clamp base, the second bearing, wherein, the second bearing is installed on the middle part shaft part of main shaft, on the second bearing, coordinate sectional fixture base, two magnet fixtures are symmetrically fixed in clamp base by the second screw, and permanent magnet passes through the first screw in compression on magnet fixture;
Described driver element is made up of motor support base, motor, belt wheel and belt; Motor support base is fixed on base plate, and on motor support base, vertical mounted motor, installs belt wheel on electric machine main shaft, and the belt grooves of belt wheel and the belt grooves of clamp base are arranged on same level position, and belt is pressed in the belt grooves of belt wheel and the belt grooves of clamp base.
Further, described clamp base is disc-shaped structure.
Further, clamp base is provided with many row's screwed holes, for adjusting the distance of magnet clamp distance clamp base center.
Further, described permanent magnet can be selected required permanent magnet type according to processing request, and permanent magnet can be made up of the stack of polylith permanent magnet simultaneously.
Further, the motor that described motor is variable-ratio.
The utlity model has following beneficial effect:
1, laser boring plasma density with respect to laser weld is much smaller, is mainly that speed and the flow of air-flow causes, and while punching, air-flow is very strong, has dispelled plasma.Therefore traditional electromagnetism householder method for welding can not simply be applicable to laser drilling process.The utility model adopts mouse cage type structure greatly to strengthen the effect in magnetic field, and electromagnetism householder method also can be suitable for for weak plasma situation.
2, the workpiece rotary work mode that the utility model adopts can be brought the centrifugal force effect of laser molten pool, makes molten metal liquid that strong splashing, then steam raising occur under the effect of centrifugal force; This evaporation has further strengthened the density of plasma; The principle of its enhancing is that laser irradiation is on the metal ion of gasification, make it plasma, with respect to only rotating the hole knockout that does not add magnetic field, the effect in magnetic field can be removed the plasma after this enhancing, thereby magnetic field is strengthened the auxiliaring effect of laser boring.On the other hand, metal liquid is under the effect of centrifugal force, and trend hole wall, makes centre, molten bath expose solid-state metal, is conducive to the energy of absorbing laser effect more fully, thereby strengthens the punching degree of depth.
3, the utility model is controlled the motion of the plasma producing in punching process by applying the magnetic field perpendicular with the direction of punching, and makes it avoid laser incident direction, has reduced the loss of laser energy, has improved perforating efficiency.Control the motion of plasma simultaneously, scatter rapidly after can making it depart from hole, reduced aperture pressure, molten metal in hole, plasma can more promptly be sprayed, acceleration punching process.Due to isoionic rapid ejection, hole internal pressure is declined, reduce the impulsive force that produces in punching process, reduce hole wall and produced the probability of micro-crack, improve drilling quality.
4, the utility model stirring to motlten metal in hole by rotating excitation field, is evenly attached on hole wall it, repairs the micro-crack of hole wall, has reduced the randomness of punching process, has improved the circularity precision in punching repeatability precision and hole.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is the structure chart of electromagnetism auxiliary laser perforating device described in the utility model;
Fig. 2 is the structure chart of mouse cage described in the utility model;
Fig. 3 is the schematic diagram of the utility model implementation process;
In figure, the implication of each label is as follows:
1, the first screw, 2, magnet fixture, 3, mouse cage, 4, condenser lens, 5, laser beam, 6, workpiece, 7, clutch shaft bearing, 8, permanent magnet, 9, clamp base, 10, motor, 11, base plate, 12, the second bearing, 13, main shaft, 14, the second screw, 15, belt, 16, belt wheel, 17, motor support base, 18, the 3rd screw, 19, mouse cage top board, 20, copper post, 21, mouse cage base plate, 22, magnetic field rotating direction, 23, magnetic field, 24, plasma, 25, motlten metal.
Detailed description of the invention
Describe the method that the utility model proposes and details and the working condition of device in detail below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein is only for explaining the utility model, and be not used in restriction the utility model.
The utility model provides a kind of electromagnetism auxiliary laser perforating device (as depicted in figs. 1 and 2), comprises four parts, is respectively laser generating unit, clamping workpiece unit, rotating excitation field generation unit and driver element.
Described laser generating unit comprises laser instrument and condenser lens 4, acts on the surface of workpiece to be processed 6 after the laser beam line focus lens 4 of laser instrument output focus on;
Described clamping workpiece unit comprises main shaft 13, base plate 11, clutch shaft bearing 7 and mouse cage 3, and wherein, main shaft 13 is fixedly mounted on a side of base plate 11, and main shaft 13 is multidiameter, and on main shaft 13, shaft part is provided with clutch shaft bearing 7, and mouse cage 3 is arranged on clutch shaft bearing 7.
Described mouse cage 3 is made up of the 3rd screw 18, mouse cage top board 19, copper post 20 and mouse cage base plate 21, wherein, mouse cage top board 19 is connected with mouse cage base plate 21 by copper post 20, copper post 20 forms a circle, be uniformly distributed, the 3rd screw 18 is positioned on mouse cage top board 19, and workpiece 6 is fixed on mouse cage 3 by tightening the 3rd screw 18.
Described rotating excitation field generation unit comprises the first screw 1, two magnet fixtures 2, paired permanent magnet 8, the second screw 14, clamp base 9, the second bearing 12, wherein, the second bearing 12 is installed on the middle part shaft part of main shaft 13, on the second bearing 12, coordinate sectional fixture base 9, two magnet fixtures 2 are symmetrically fixed in clamp base 9 by the second screw 14, and each permanent magnet 8 is all pressed on magnet fixture 2 by the first screw 1; Wherein, permanent magnet 8 can be selected required permanent magnet type according to processing request, and the quantity of permanent magnet 8 also can be selected according to actual needs.
Described driver element is made up of motor support base 17, motor 10, belt wheel 16, belt 15; Motor support base 17 is fixed on base plate 11, vertical mounted motor 10 on motor support base 17, belt wheel 16 is installed on electric machine main shaft, and the belt grooves of the belt grooves of belt wheel 16 and clamp base 9 is arranged on same level position, and belt 15 is pressed in the belt grooves of belt wheel 16 and the belt grooves of clamp base 9.
Adopting above-mentioned perforating device to carry out electromagnetism auxiliary laser drilling method specifically comprises the steps:
(1) workpiece 6 that is of a size of 50mm × 50mm × 10mm is clamped on the middle mouse cage 3 of rotating excitation field, ensures not strike workpiece 6 in magnet fixture 2 rotary courses;
Selected magnetic field intensity parameter is respectively: single permanent magnet 8 Surface field intensity 8500G, and two symmetrical installations of permanent magnet 8, the distance between the permanent magnet 8 of symmetrical clamping is 60mm;
(2) rotating speed that presets motor 10 is 1500r/min, starter motor 10, motor 10 drives clamp base 9 by belt wheel 16, belt 15, make permanent magnet 8 high-speed rotaries of clamping in clamp base 9 then formation rotating excitation field, wherein the diameter ratio of clamp base 9 and belt wheel 16 is 1.5, and therefore the rotating speed of rotating excitation field is 1000r/min; Meanwhile, rotating excitation field produces electromagnetic force in mouse cage 3, and electromagnetic force makes workpiece 6 follow mouse cage 3 synchronous rotaries;
(3) until the velocity-stabilization of motor 10 after preset value (1500r/min), open laser instrument, the laser beam 5 that laser instrument produces acts on the surface of workpiece 6 by condenser lens 4, complete electromagnetism auxiliary laser punching process.Wherein, laser parameter respectively: laser power 2000W, laser pulse width 0.5ms, laser frequency 100Hz, laser defocusing amount 0.
Operation principle of the present utility model as shown in Figure 3, according to charged particle laws of motion in magnetic field, when charged particle enters in a uniform magnetic field with speed v, it will receive that power F=qv × B(q is particle carried charge) effect, this power velocity attitude total and charged particle is perpendicular, to change therefore enter the direction of motion of the charged particle in magnetic field, charged particle will circle in perpendicular to H plane, and positive and negative particle is made rightabout circular motion.Due in punching process, plasma 24 sharply expands in hole, after making hole internal pressure reach extreme value, blast outside squit hole, the therefore moment outside plasma 24 squit holes, what the direction of motion of the charged particle in plasma 24 can be similar to regards identical with laser incident direction as.If exist one with the perpendicular magnetic field 23 of punching direction, positive and negative charged particle in plasma 24 will change the direction of motion, both sides to punching direction move in a circle, when magnetic direction is during as shown in Figure 3 perpendicular to paper incident, positive electricity particle in plasma 24 departs from center left, negative electricity particle in plasma 24 departs from center to the right, therefore, plasma 24 has been avoided laser incident direction, reduce absorbing again laser energy, also sharply reduced near the pressure in aperture simultaneously, make the motlten metal 25 in hole, plasma 24 can more efficient tap outside.
Simultaneously, magnetic field by rotation makes to produce induced-current in workpiece 6, thereby making has electric current to pass through in the motlten metal 25 in process, the electromagnetic force that electric current and magnetic field interaction produce forms stirring action to motlten metal 25, mixing direction is consistent with magnetic field rotating direction 22, make it spouting in the shape of a spiral, be attached to uniformly on hole wall.
In addition, rotating excitation field acts on rotatable mouse cage 3, in mouse cage 3, produce induced-current, induced-current and rotating excitation field interact and produce electromagnetic force, electromagnetic force makes mouse cage 3 can follow rotating excitation field to rotate together, mouse cage 3 and then drive workpiece rotate together, and the motlten metal 25 of the centrifugal action that the rotation of workpiece 6 produces in hole, is attached on hole wall it more uniformly.
It is apparent to one skilled in the art that the utility model can be changed into various ways, such change do not think depart from scope of the present utility model.All so apparent amendments of the technical staff to described field, within being included in the scope of this claim.
Claims (5)
1. an electromagnetism auxiliary laser perforating device, is characterized in that, comprises laser generating unit, clamping workpiece unit, rotating excitation field generation unit and driver element;
Described laser generating unit comprises laser instrument and condenser lens (4), acts on the surface of workpiece to be processed (6) after the laser beam line focus lens (4) of laser instrument output focus on;
Described clamping workpiece unit comprises main shaft (13), base plate (11), clutch shaft bearing (7) and mouse cage (3); Described main shaft (13) is fixedly mounted on a side of base plate (11), and main shaft (13) is multidiameter, at the upper shaft part of main shaft (13), clutch shaft bearing (7) is installed, and mouse cage (3) is arranged on clutch shaft bearing (7);
Described mouse cage (3) is made up of the 3rd screw (18), mouse cage top board (19), copper post (20) and mouse cage base plate (21), mouse cage top board (19) is connected with mouse cage base plate (21) by copper post (20), copper post (20) forms a circle, be uniformly distributed, it is upper that the 3rd screw (18) is positioned at mouse cage top board (19), and workpiece (6) to be processed is fixed on mouse cage (3) by the 3rd screw (18);
Described rotating excitation field generation unit comprises the first screw (1), two magnet fixtures (2), paired permanent magnet (8), the second screw (14), clamp base (9), the second bearing (12), wherein, the second bearing (12) is installed on the middle part shaft part of main shaft (13), the upper sectional fixture base (9) that coordinates of the second bearing (12), it is upper that two magnet fixtures (2) are symmetrically fixed on clamp base (9) by the second screw (14) respectively, and each permanent magnet (8) is all pressed on a magnet fixture (2) by the first screw (1); All permanent magnets (8) are symmetrically distributed in clamp base (9);
Described driver element is made up of motor support base (17), motor (10), belt wheel (16) and belt (15); Motor support base (17) is fixed on base plate (11), the upper vertical mounted motor (10) of motor support base (17), belt wheel (16) is installed on electric machine main shaft, the belt grooves of the belt grooves of belt wheel (16) and clamp base (9) is arranged on same level position, and belt (15) is pressed in the belt grooves of belt wheel (16) and the belt grooves of clamp base (9).
2. electromagnetism auxiliary laser perforating device according to claim 1, is characterized in that, described clamp base (9) is disc-shaped structure.
3. electromagnetism auxiliary laser perforating device according to claim 1, is characterized in that, clamp base (9) is provided with many row's screwed holes, for adjusting the distance of magnet fixture (2) apart from clamp base (9) center.
4. electromagnetism auxiliary laser perforating device according to claim 1, is characterized in that, described permanent magnet (8) is made up of the stack of polylith permanent magnet.
5. electromagnetism auxiliary laser perforating device according to claim 1, is characterized in that, the motor that described motor (10) is variable-ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064270.4U CN203738227U (en) | 2014-02-13 | 2014-02-13 | Electromagnetic-aided laser drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064270.4U CN203738227U (en) | 2014-02-13 | 2014-02-13 | Electromagnetic-aided laser drilling device |
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| Publication Number | Publication Date |
|---|---|
| CN203738227U true CN203738227U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064270.4U Expired - Fee Related CN203738227U (en) | 2014-02-13 | 2014-02-13 | Electromagnetic-aided laser drilling device |
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| Country | Link |
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| CN (1) | CN203738227U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817430A (en) * | 2014-02-13 | 2014-05-28 | 温州大学 | Electromagnetically-assisted laser drilling method and device |
| CN110576262A (en) * | 2019-09-05 | 2019-12-17 | 上海交通大学 | Laser welding experimental device capable of realizing magnetic field auxiliary forming |
| CN110666369A (en) * | 2019-10-29 | 2020-01-10 | 江苏华源节水股份有限公司 | Drip irrigation tape laser drilling method |
-
2014
- 2014-02-13 CN CN201420064270.4U patent/CN203738227U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817430A (en) * | 2014-02-13 | 2014-05-28 | 温州大学 | Electromagnetically-assisted laser drilling method and device |
| CN103817430B (en) * | 2014-02-13 | 2015-08-12 | 温州大学 | A kind of electromagnetism auxiliary laser drilling method and device |
| CN110576262A (en) * | 2019-09-05 | 2019-12-17 | 上海交通大学 | Laser welding experimental device capable of realizing magnetic field auxiliary forming |
| CN110576262B (en) * | 2019-09-05 | 2022-01-28 | 上海交通大学 | Laser welding experimental device capable of realizing magnetic field auxiliary forming |
| CN110666369A (en) * | 2019-10-29 | 2020-01-10 | 江苏华源节水股份有限公司 | Drip irrigation tape laser drilling method |
| CN110666369B (en) * | 2019-10-29 | 2021-04-23 | 江苏华源节水股份有限公司 | Drip irrigation tape laser drilling method |
| CN112958923A (en) * | 2019-10-29 | 2021-06-15 | 江苏华源节水股份有限公司 | Laser hole making method for drip irrigation tape |
| CN113042913A (en) * | 2019-10-29 | 2021-06-29 | 江苏华源节水股份有限公司 | Forming method of water outlet of drip irrigation tape |
| CN112958923B (en) * | 2019-10-29 | 2022-03-04 | 江苏华源节水股份有限公司 | Laser hole making method for drip irrigation tape |
| CN113042913B (en) * | 2019-10-29 | 2022-03-04 | 江苏华源节水股份有限公司 | Forming method of water outlet of drip irrigation tape |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20160213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |