CN111822888A - Laser processing device for parabolic streamline hole - Google Patents
Laser processing device for parabolic streamline hole Download PDFInfo
- Publication number
- CN111822888A CN111822888A CN201910321619.5A CN201910321619A CN111822888A CN 111822888 A CN111822888 A CN 111822888A CN 201910321619 A CN201910321619 A CN 201910321619A CN 111822888 A CN111822888 A CN 111822888A
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- laser
- nozzle
- jet flow
- window
- focusing lens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/384—Removing material by boring or cutting by boring of specially shaped holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/146—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing a liquid
Abstract
The invention relates to the field of laser processing, in particular to a laser processing device of a parabolic streamline hole, which comprises a shell, a laser focusing lens, a laser window and a nozzle, a hydraulic balance cavity is arranged in the shell, a laser window is arranged on one side of the hydraulic balance cavity, a nozzle is arranged on the other side of the hydraulic balance cavity, the shell is provided with an interface communicated with the hydraulic balancing cavity, the laser focusing lens is arranged in the shell and is arranged outside the laser window, laser is emitted from an opening at the rear end of the shell and sequentially passes through the laser focusing lens, the laser window and liquid in the hydraulic balancing cavity to irradiate in the nozzle, the shell on the outer side of the nozzle is provided with a jet orifice, liquid passes through the nozzle to form jet flow, the jet flow is ejected out from the jet orifice, the jet flow is bent under the action of gravity to form a parabola shape and is ejected into a workpiece to be processed, and laser enters the jet flow and is transmitted along the jet flow direction. The invention makes the laser bend with the jet flow, and can efficiently realize the laser processing of the parabola-shaped streamline hole.
Description
Technical Field
The invention relates to the field of laser processing, in particular to a laser processing device for a parabolic streamline hole.
Background
The laser drilling processing technology is widely applied to the processing process of a plurality of metal material pore canals, and has wide application in the straight hole processing due to the characteristic that laser is propagated along a straight line, for example, the invention patent with the patent number of 201810987816.6 provides a laser drilling device and a method for improving the hole-making quality based on a vacuum environment, the method realizes the processing of a straight hole after the laser is introduced into the vacuum environment, effectively reduces the oxidation and nitridation reactions which are easy to occur in the laser drilling in the air, improves the quality of the hole wall, and as the invention patent with the patent number of 201811340209.7 discloses a device and a method for assisting the laser drilling by liquid nitrogen cooling, the drilling area is cooled by liquid nitrogen in the drilling process, the deformation and the warping which are effectively reduced by the thermal effect in the processing process, and as the invention patent with the patent number of 201811559109.3, a special clamp for assisting the laser drilling by a light guide optical fiber and a method for processing a small hole are disclosed, the method utilizes the optical fiber to conduct the laser emitted by the laser to the surface of the workpiece, and utilizes the optical fiber clamp to realize the processing of the small hole with high precision and high surface quality. However, the above patents can only process straight holes, but cannot directly process streamline ducts, for example, if a flow channel with a 90-degree change of the fluid advancing direction is to be processed, laser can only be used to directly drill straight holes in two perpendicular directions, and then unnecessary ducts are plugged.
Disclosure of Invention
The invention aims to provide a laser processing device for a parabolic streamline hole, wherein laser is coupled into jet flow and propagates together with the jet flow, the jet flow is bent under the action of gravity, and the laser is bent along with the bending of the jet flow, so that the laser processing of the parabolic streamline hole can be efficiently realized.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a laser beam machining device in parabola shape streamline hole, includes casing, laser focusing lens, laser window and nozzle be equipped with the balanced chamber of hydraulic pressure in the casing, just the balanced chamber of hydraulic pressure one side is equipped with the laser window, and the opposite side is equipped with the nozzle be equipped with on the casing interface with the balanced chamber of hydraulic pressure communicates with each other, and laser focusing lens locates in the casing and locate the laser window outside, laser is penetrated and is passed in proper order by casing rear end opening shine behind the liquid in laser focusing lens, laser window and the balanced intracavity of hydraulic pressure in the nozzle be equipped with the efflux mouth on the casing in the nozzle outside, and liquid process form behind the nozzle efflux and pass the efflux mouth blowout, the efflux receives the crooked parabola form of action of gravity to penetrate the work piece of treating processing, and laser gets into in the efflux and spreads along the efflux direction.
The laser light is totally reflected within the jet and propagates coaxially with the jet.
The focal position of the laser focusing lens is positioned in the nozzle.
The nozzle is internally provided with a pore passage for spraying liquid.
The cross section of the pore canal is in a round shape, a rectangular shape or a round corner rectangular shape.
The nozzle is made of wear-resistant metal materials, and the pore diameter of a pore passage of the nozzle is 0.5-3 mm.
And sealing parts are arranged between the laser window and the shell and between the nozzle and the shell.
The hydraulic value in the hydraulic balance cavity is 0.1-3 MPa.
The invention has the advantages and positive effects that:
1. the invention converges the high-power laser beam emitted by the laser in the nozzle through the laser focusing lens, the converged laser is totally reflected inside the jet flow sprayed out of the nozzle and is conducted along the advancing direction of the jet flow, the jet flow forms a parabola shape under the action of gravity and is jetted into a workpiece, and the laser is also bent along with the jet flow, thereby realizing the laser processing of the parabola-shaped streamline hole of the workpiece.
2. The invention can select the corresponding nozzle pore channel shape according to the requirement so as to meet the processing requirements of streamline holes with different section shapes.
Drawings
Figure 1 is a schematic structural view of the present invention,
figure 2 is a schematic view of a nozzle arrangement according to the invention,
figure 3 is a schematic view of another nozzle configuration useful in the present invention,
FIG. 4 is a schematic view of another nozzle configuration useful in the present invention.
The laser balance device comprises a shell 1, a groove 101, a laser 2, a laser focusing lens 3, a laser window 4, a hydraulic balance cavity 5, a nozzle 6, a pore channel 601, a jet flow 7, an interface 8, a jet flow port 9 and a workpiece 10.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the present invention includes a housing 1, a laser focusing lens 3, a laser window 4 and a nozzle 6, a hydraulic equilibrium chamber 5 is arranged in the housing 1, and a laser window 4 is arranged on one side of the hydraulic equilibrium chamber 5, and a nozzle 6 is arranged on the other side, the laser focusing lens 3 is arranged in the housing 1 and is arranged on the outer side of the laser window 4, an opening is arranged at the rear end of the housing 1, and the laser 2 emitted by the laser device is injected from the opening at the rear end of the housing 1 and then sequentially passes through the laser focusing lens 3, the laser window 4 and the liquid in the hydraulic equilibrium chamber 5 and irradiates in the nozzle 6, a connector 8 is arranged on the housing 1 and is communicated with the hydraulic equilibrium chamber 5, a jet orifice 9 is arranged on the housing 1 on the outer side of the nozzle 6, and the pressure liquid enters the hydraulic equilibrium chamber 5 through the connector 8 and forms a jet flow 7 through the nozzle 6 and then passes, after the laser 2 irradiates into the nozzle 6, the laser 2 is totally reflected in the jet flow 7 and propagates along the direction of the jet flow 7, the jet flow 7 is bent under the action of gravity to form a parabolic shape, and the laser 2 is also bent along with the jet flow 7, so that the laser processing of a parabolic streamline hole is realized on the workpiece 10. In this embodiment, the pressure liquid is water, the laser 2 is a high-power laser beam to ensure that the drilling requirement is met, and the laser is a commercially available product.
As shown in fig. 1, the laser focusing lens 3 is used for focusing the collimated laser 2 emitted by the laser, and the focal position is located in the nozzle 6, a groove 101 is provided at the rear end of the housing 1, the laser focusing lens 3 is embedded in the groove 101, and the position can be finely adjusted in the groove 101 along the advancing direction of the laser 2, so as to ensure that the laser 2 can be focused into the nozzle 6, and the laser focusing lens 3 can be a single lens or a lens group according to actual needs.
As shown in fig. 1, the laser window 4 is used to isolate pressure fluid in the hydraulic equalizing chamber 5, and a first sealing member is provided between the laser window 4 and the housing 1 to ensure sealing, and in this embodiment, the first sealing member is a sealing ring.
As shown in fig. 1, a hydraulic equalizing chamber 5 is arranged between the laser window 4 and the nozzle 6, pressure fluid enters from a reserved port 8 on the housing 1 and achieves hydraulic stability in the hydraulic equalizing chamber 5, the nozzle 6 is a structure for achieving fluid ejection, and a second sealing member is arranged between the nozzle 6 and the housing 1 to achieve sealing. In this embodiment, the second sealing element is a sealing ring.
As shown in fig. 2 to 4, the nozzle 6 is provided with a duct 601, and the liquid in the hydraulic equalizing chamber 5 is ejected from the duct 601. The pore channel 601 of the nozzle 6 can adopt different cross-sectional shapes and structures according to actual needs, the nozzle 6 shown in fig. 2 can generate jet flow 7 with a circular cross section, after laser 2 is coupled into the pore channel, relatively uniform laser distribution can be realized inside the jet flow 7, after the jet flow 7 containing the laser 2 irradiates the surface of a workpiece, laser processing of a parabolic flow hole with a circular cross section can be realized, the nozzle 6 shown in fig. 3 can generate jet flow 7 with a rectangular cross section, the nozzle 6 shown in fig. 4 can generate jet flow 7 with a round-cornered rectangular cross section, and laser processing of a parabolic flow hole with a rectangular or round-cornered rectangular cross section can be respectively realized.
In the embodiment, the hydraulic value in the hydraulic balance cavity 5 is 0.1-3 MPa, the nozzle 6 is made of wear-resistant metal materials, and the aperture of the pore channel 601 of the nozzle 6 is 0.5-3 mm.
The working principle of the invention is as follows:
when the laser processing device works, pressure liquid enters the hydraulic balance cavity 5 through the interface 8 on the shell 1 and passes through the nozzle 6 to form a jet flow 7 to penetrate through the jet flow port 9 to be ejected, laser 2 emitted by a laser enters the shell 1 from the rear end opening, then passes through the laser focusing lens 3, sequentially passes through the laser window 4 and liquid in the hydraulic balance cavity 5 to be focused in the nozzle 6, is totally reflected in the jet flow 7 and is transmitted along the direction of the jet flow 7, the jet flow 7 forms a parabolic shape under the action of gravity, and the laser 2 is bent along with the jet flow 7, so that the laser processing of the parabolic flow hole in the workpiece 10 is efficiently realized. The hydraulic pressure in the hydraulic equalizing cavity 5 needs to be kept stable, the jet flow sprayed by the nozzle 6 needs to be kept stable, and the flow velocity of the jet flow 7 and the distance between the jet flow and the workpiece 10 are adjusted through calculation according to the requirements of the streamline hole in the workpiece 10, so that the machined streamline hole meets the requirements.
Claims (8)
1. A laser processing device for a parabolic streamline hole is characterized in that: including casing (1), laser focusing lens (3), laser window (4) and nozzle (6) be equipped with balanced chamber of hydraulic pressure (5) in casing (1), just balanced chamber of hydraulic pressure (5) one side is equipped with laser window (4), and the opposite side is equipped with nozzle (6) be equipped with on casing (1) interface (8) with balanced chamber of hydraulic pressure (5) communicate with each other, laser focusing lens (3) are located in casing (1) and locate the laser window (4) outside, laser (2) are penetrated and are passed in proper order by casing (1) rear end opening laser focusing lens (3), laser window (4) and the balanced intracavity of hydraulic pressure (5) after the liquid shine in nozzle (6) be equipped with efflux mouth (9) on casing (1) in the nozzle (6) outside, and liquid process form behind nozzle (6) efflux (7) pass efflux mouth (9) blowout, the jet flow (7) is bent under the action of gravity to form a parabolic shape and is shot into a workpiece (10) to be processed, and the laser (2) enters the jet flow (7) and propagates along the direction of the jet flow (7).
2. The laser shock peening apparatus with coaxial light and water according to claim 1, wherein: the laser (2) is totally reflected in the jet (7) and propagates coaxially with the jet (7).
3. The laser shock peening apparatus with coaxial light and water according to claim 1, wherein: the focal point position of the laser focusing lens (3) is positioned in the nozzle (6).
4. The device for laser shock peening according to claim 1 or 3, wherein: the nozzle (6) is internally provided with a pore channel (601) for spraying liquid.
5. The device for laser shock peening of optical-water coaxial according to claim 4, wherein: the cross section of the pore channel (601) is round, rectangular or rounded rectangle.
6. The device for laser shock peening of optical-water coaxial according to claim 4, wherein: the nozzle (6) is made of wear-resistant metal materials, and the aperture of a pore channel (601) of the nozzle (6) is 0.5-3 mm.
7. The laser shock peening apparatus with coaxial light and water according to claim 1, wherein: sealing elements are arranged between the laser window (4) and the shell (1) and between the nozzle (6) and the shell (1).
8. The laser shock peening apparatus with coaxial light and water according to claim 1, wherein: the hydraulic value in the hydraulic balance cavity (5) is 0.1-3 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910321619.5A CN111822888B (en) | 2019-04-22 | 2019-04-22 | Laser processing device for parabolic streamline hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910321619.5A CN111822888B (en) | 2019-04-22 | 2019-04-22 | Laser processing device for parabolic streamline hole |
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| Publication Number | Publication Date |
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| CN111822888A true CN111822888A (en) | 2020-10-27 |
| CN111822888B CN111822888B (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910321619.5A Active CN111822888B (en) | 2019-04-22 | 2019-04-22 | Laser processing device for parabolic streamline hole |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5356081A (en) * | 1993-02-24 | 1994-10-18 | Electric Power Research Institute, Inc. | Apparatus and process for employing synergistic destructive powers of a water stream and a laser beam |
| CN102500928A (en) * | 2011-10-31 | 2012-06-20 | 重庆长安汽车股份有限公司 | Micro-water-column guiding laser micromachining device |
| CN103302406A (en) * | 2013-06-20 | 2013-09-18 | 江苏大学 | Intra-light water delivery laser shock peening method and device |
| CN105817760A (en) * | 2016-04-27 | 2016-08-03 | 桂林电子科技大学 | Nozzle splash-proof device of water-jet guided laser machining system |
| CN108581224A (en) * | 2018-04-27 | 2018-09-28 | 中国科学院宁波材料技术与工程研究所 | Rotary laser processing unit (plant) and its application, laser-processing system and method |
| CN109277697A (en) * | 2018-12-05 | 2019-01-29 | 沈阳仪表科学研究院有限公司 | The fluidic device of the micro- water beam of high pressure for micro- water beam and laser coupled |
-
2019
- 2019-04-22 CN CN201910321619.5A patent/CN111822888B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5356081A (en) * | 1993-02-24 | 1994-10-18 | Electric Power Research Institute, Inc. | Apparatus and process for employing synergistic destructive powers of a water stream and a laser beam |
| CN102500928A (en) * | 2011-10-31 | 2012-06-20 | 重庆长安汽车股份有限公司 | Micro-water-column guiding laser micromachining device |
| CN103302406A (en) * | 2013-06-20 | 2013-09-18 | 江苏大学 | Intra-light water delivery laser shock peening method and device |
| CN105817760A (en) * | 2016-04-27 | 2016-08-03 | 桂林电子科技大学 | Nozzle splash-proof device of water-jet guided laser machining system |
| CN108581224A (en) * | 2018-04-27 | 2018-09-28 | 中国科学院宁波材料技术与工程研究所 | Rotary laser processing unit (plant) and its application, laser-processing system and method |
| CN109277697A (en) * | 2018-12-05 | 2019-01-29 | 沈阳仪表科学研究院有限公司 | The fluidic device of the micro- water beam of high pressure for micro- water beam and laser coupled |
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| CN111822888B (en) | 2021-11-16 |
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