CN103753223A - Laser-assisted drilling method and device - Google Patents
Laser-assisted drilling method and device Download PDFInfo
- Publication number
- CN103753223A CN103753223A CN201310674359.2A CN201310674359A CN103753223A CN 103753223 A CN103753223 A CN 103753223A CN 201310674359 A CN201310674359 A CN 201310674359A CN 103753223 A CN103753223 A CN 103753223A
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- laser
- drill bit
- laser instrument
- assisted
- instrument
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P25/00—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
- B23P25/003—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress immediately preceding a cutting tool
- B23P25/006—Heating the workpiece by laser during machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Drilling And Boring (AREA)
Abstract
The invention provides a laser-assisted drilling method and a laser-assisted drilling device. The laser-assisted drilling device comprises a workbench, a fixture mounted on the workbench, a drill bit and a laser device, wherein the drill bit and the laser device are respectively arranged on the workbench through a movable device and arranged above the fixture, and the laser device and the drill bit are arranged to be provided with an included angle therebetween. According to the laser-assisted drilling method, the to-be-drilled area of a workpiece is preheated by a high-energy laser beam, so that, in a very short time, part of the to-be-drilled area is heated to have a very high temperature, meanwhile, the physical performance of the material is changed under the high temperature, and the to-be-drilled area of the workpiece material is softened. Once the laser heating is completed, drilling starts rapidly. Thus the drilling resistance can be reduced, the machinability of the material can be improved, the tool wear can be reduced, the success of drilling can be ensured, and the machining precision and the machining efficiency can be improved.
Description
Technical field
The present invention relates to field of machining, specifically a kind of laser assisted boring method and device.
Background technology
For adopting rough forging or through axle class or the flat part of cure process, due to surface irregularity or hardness higher, cause traditional Drilling operation, resistance is large, temperature rise, tool wear is serious.Particularly, in the processing of flat part inclined hole or periphery boring, because drill bit is long, material hardness is high, while entering to hole due to surface irregularity, easily cause drill bit to slide and vibration, thereby can reduce crudy, increase the wearing and tearing of drill bit, cause being difficult to accurate punching, the possibility of broken drill also increases greatly.
Summary of the invention
In view of this, be necessary for problems of the prior art, a kind of laser assisted boring method and device are provided, reduce tool wear, improve crudy and working (machining) efficiency.
For achieving the above object, the present invention is by the following technical solutions:
A laser assisted boring method, comprising:
S1, boring location, fix workpiece by a fixture, by the drill hole for the treatment of in the laser beam alignment pieces of a laser instrument;
S2, LASER HEATING, utilize the laser beam of laser instrument to heat the drill hole for the treatment of of workpiece;
S3, continue LASER HEATING and close laser instrument after a period of time, exist side by side and use drill bit treating that drill hole holes.
Preferably, described laser instrument is optical fiber laser.
Preferably, the laser beam of described laser instrument is perpendicular to surface of the work.
Preferably, the spot diameter that the laser beam of described laser instrument forms at surface of the work is not more than aperture to be holed.
Preferably, in S1, center superposition to be holed on the laser beam center of described laser instrument and workpiece.
Preferably, in S2, the power of described laser beam is 200W, adopts optical fiber continuous wave output.
Preferably, in S2, the duration of LASER HEATING is 8～12 seconds.
A laser assisted drilling equipment, comprises workbench and is installed on fixture, drill bit and the laser instrument on workbench; Described drill bit and laser instrument are installed on workbench by a head respectively, and are arranged at fixture top; Layout forms an angle between described laser instrument and drill bit.
Preferably, the axis angle of described drill bit and laser instrument is 7 ° to 15 °.
Preferably, described laser instrument is optical fiber laser, and laser instrument is arranged on workbench by head movably; Described laser instrument is provided with power conditioning module and laser controlling switch.
The present invention first carries out preheating by high energy laser beam to the boring region of workpiece, and within very short time, region to be holed, part is heated to very high-temperature, and now the physical property of material at high temperature changes, and the region to be holed of workpiece material is softened.Once after LASER HEATING completes, start rapidly boring.Can reduce boring resistance thus, improve the machinability of material, reduce tool wear, not only guarantee the success of boring, and can improve machining accuracy and working (machining) efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of laser assisted boring method of the present invention and device.
Reference numeral
1. workpiece 2. laser beam 3. laser instrument 4. drill bits
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical scheme of the present invention is elaborated.
As shown in Figure 1, a kind of laser assisted boring method provided by the invention, specifically comprises the following steps:
S1, boring location: by a fixture, workpiece 1 is fixing, by the drill hole for the treatment of in the laser beam of a laser instrument 32 alignment pieces 1, and drill bit 4 is suspended in to workpiece 1 top, aim at and treat drill hole.
Wherein, for ease of the drill hole for the treatment of of alignment pieces 1, laser instrument 3 requirements in the present invention can be moved easily, therefore preferentially select optical fiber laser 3.In when location, make center superposition to be holed on laser beam 2 centers of laser instrument 3 and workpiece 1 as far as possible.
S2, LASER HEATING: utilize the drill hole for the treatment of on 2 pairs of workpiece 1 of laser beam of laser instrument 3 to heat.
When heating, the spot size that the laser beam 2 of laser instrument 3 forms on workpiece 1 surface will rationally be controlled; In general, spot diameter can not be greater than aperture to be holed.If hot spot is greater than aperture to be holed, can have a huge impact workpiece 1 characteristic in non-boring region; On the other hand, it is large that hot spot becomes, and can make the efficiency of heating surface variation of laser beam 2, and energy density reduces greatly, and these all can make the Quality Down of auxiliary bore hole; But hot spot is too small, and aperture differs too large, also can make processing effect not obvious.Preferably, the optimized incidence of laser beam 2 is vertical with workpiece 1 surface, is conducive to like this absorption of 1 pair of laser of workpiece, improves the efficiency of heating surface of laser beam 2.
The duration of LASER HEATING also should rationally be controlled.The LASER HEATING time is oversize, and whole heating process can be long, affects working (machining) efficiency; The LASER HEATING time is too short, and material does not reach softening temperature, and the penetration capacity of laser is very limited, and short meeting of heat time is had a greatly reduced quality the effect of secondary process.In the embodiment of the present invention, the duration of LASER HEATING is 8～12 seconds.
In addition, the power of laser beam 2 also needs strict control, and power is too little, can make laser not reach softening temperature to the heating-up temperature of workpiece 1, thereby reduces the effect of auxiliary bore hole; Power is too large, can make near the heat affected area of hot spot become large, can cause that non-boring region produces temper softening, also likely makes the surface generation oxidation in these regions simultaneously, thus impact boring effect.In the embodiment of the present invention, the power of described laser beam 2 is 200W, adopts optical fiber continuous wave output.
S3, boring: continue LASER HEATING and after a period of time, close laser instrument 3, exist side by side and use drill bit 4 treating that drill hole holes.
The linking that LASER HEATING and drill bit 4 enter to bore also has a great impact boring effect.During boring, must avoid laser beam 2 to be irradiated on drill bit 4, during boring, drill bit 4 enters to bore too fast, and laser beam 22 can be irradiated on drill bit 4, the hardness of drill bit 4 and anti-wear performance is changed, thereby make driller's effect become poorer.But, can not close after a period of time at laser beam 2, just use drill bit 4 to start into brill, can make like this bore area can produce quenching effect, thereby reduce the effect of auxiliary bore hole.Therefore,, when boring, after laser instrument 3 cuts out, drill bit 4 will pierce rapidly workpiece 1.
In S1 to S3, between laser instrument 3, drill bit 4 and fixture, can not produce interference, laser beam 2 can not be irradiated on drill bit 4 and fixture, when drill bit bores for 4 times, need close in time laser instrument 3, avoids drill bit 4 to encounter laser beam 2.For laser instrument 3 and drill bit 4 are closely cooperated, the angle between described laser instrument 3 and drill bit 4 should be as far as possible little, at 7 °～15 °, is advisable.
To provide two groups of experimental datas below, so that the remarkable beneficial effect of laser assisted boring method provided by the invention to be described.
Experiment one:
In this experiment, adopt the method for above-mentioned laser assisted boring to hole to stainless steel pipe, record starts boring to completing required total time of boring from drill bit 4.
The 3mm drill bit 4 that this experiment adopts, the long 200mm of stainless steel pipe, external diameter Φ 40mm, internal diameter Φ 30mm; Laser power 200W, adopts optical fiber continuous wave output, and spot size is 2.5mm; Angle between laser instrument 3 and drill bit 4 is 15 °; The rotating speed of drill bit 4 is 230r/min; The time of LASER HEATING is 10 seconds.
Be added with under laser-assisted condition, repeating to test 6 times, having obtained laser assisted boring is 48.6 seconds average time.
Do not adding under the condition of laser, repeating to test 6 times, obtaining not adding laser, to drill average time used be 74.3 seconds.
Can find out, use after laser auxiliary heating, the efficiency of boring on average can improve 34.6%.
Experiment two:
In this experiment, adopt the method for above-mentioned laser assisted boring to hole to 45# steel pipe, then adopt 2D image to process coordinate measuring apparatus and measure hole diameter.
The LASER HEATING time of this experiment is 10 seconds; The drilling time of drill bit 4 is 10 seconds.
Be added with under laser-assisted condition, repeating to test 6 times, recording hole diameter mean value is 1.9438mm.
Do not adding under the condition of laser, repeating to test 6 times, recording hole diameter mean value is 1.0694mm.
Can find out, use after laser auxiliary heating, enter hole diameter and can improve 81.8%, successful.Illustrate and use laser assisted preheating region to be holed, make drill bit 4 more easily enter to bore, can effectively reduce the vibration producing while boring out-of-flatness surface.
It should be noted that, above-mentioned experimental data is all the laboratory references to laser assisted boring method of the present invention, can not therefore limit the concrete range of application of laser assisted boring method of the present invention.
The present invention also provides a kind of device of laser assisted boring, comprises workbench and is installed on fixture, drill bit 4 and the laser instrument 3 on workbench; Described drill bit 4 and laser instrument 3 are installed on workbench by a head respectively, and are arranged at fixture top; Layout forms an angle between described laser instrument 3 and drill bit 4.
As preferably, the axis angle of described drill bit 4 and laser instrument 3 is 7 ° to 15 °.The preferred incident angle of laser beam, should be that the surface processed with workpiece 1 is vertical, the preferred incident angle of laser beam should with drill bit 4 to enter to bore angle parallel.But apparently, laser instrument 3 will interfere with each other with drill bit 4 like this.Therefore,, in the situation that laser instrument 3 and drill bit 4 are non-interference, the axis angle of described drill bit 4 and laser instrument 3 is 7 ° to 15 °.
Described laser instrument 3 is optical fiber laser 3, and laser instrument 3 is arranged on workbench by head movably; Described laser instrument 3 is provided with power conditioning module and laser controlling switch.
For convenience of the replacing of laser positioning and drill bit 4, laser instrument 3 can move.Power conditioning module is for adjusting laser power for different situations different materials.For coordinating the operation of drill bit 4, be provided with the Kai Heguan that laser controlling switch is controlled laser neatly.
The present invention utilizes laser beam 2 bundles to carry out preheating to the boring region of workpiece 1, and within very short time, region to be holed, part is heated to very high-temperature, and the physical property of material is at high temperature changed, and the region to be holed of workpiece 1 material is softened.After the material of workpiece 1 is softened, start rapidly boring.Thus, the resistance of drill bit 4 borings is significantly reduced, and the machinability of material is improved greatly.The present invention, under the successful prerequisite of assurance boring, effectively reduces tool wear, and effectively improves machining accuracy and working (machining) efficiency.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a laser assisted boring method, is characterized in that, comprising:
S1, boring location, fix workpiece by a fixture, by the drill hole for the treatment of in the laser beam alignment pieces of a laser instrument;
S2, LASER HEATING, utilize the laser beam of laser instrument to heat the drill hole for the treatment of of workpiece;
S3, continue LASER HEATING and close laser instrument after a period of time, exist side by side and use drill bit treating that drill hole holes.
2. laser assisted boring method according to claim 1, is characterized in that, described laser instrument is optical fiber laser.
3. laser assisted boring method according to claim 1, is characterized in that, the laser beam of laser instrument is perpendicular to surface of the work.
4. laser assisted boring method according to claim 1, is characterized in that, the spot diameter that the laser beam of described laser instrument forms at surface of the work is not more than aperture to be holed.
5. laser assisted boring method according to claim 1, is characterized in that, in S1, and center superposition to be holed on the laser beam center of laser instrument and workpiece.
6. laser assisted boring method according to claim 1, is characterized in that, in S2, the power of described laser beam is 200W, adopts optical fiber continuous wave output.
7. laser assisted boring method according to claim 1, is characterized in that, in S2, the duration of LASER HEATING is 8～12 seconds.
8. a laser assisted drilling equipment, is characterized in that, comprises workbench and is installed on fixture, drill bit and the laser instrument on workbench; Described drill bit and laser instrument are installed on workbench by a head respectively, and are arranged at fixture top; Layout forms an angle between described laser instrument and drill bit.
9. laser assisted drilling equipment according to claim 8, is characterized in that, the axis angle of described drill bit and laser instrument is 7 ° to 15 °.
10. the device of laser assisted boring according to claim 8, is characterized in that: described laser instrument is optical fiber laser, and laser instrument is arranged on workbench by head movably; Described laser instrument is provided with power conditioning module and laser controlling switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674359.2A CN103753223A (en) | 2013-12-11 | 2013-12-11 | Laser-assisted drilling method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674359.2A CN103753223A (en) | 2013-12-11 | 2013-12-11 | Laser-assisted drilling method and device |
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| CN103753223A true CN103753223A (en) | 2014-04-30 |
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| CN201310674359.2A Pending CN103753223A (en) | 2013-12-11 | 2013-12-11 | Laser-assisted drilling method and device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816341A (en) * | 2015-04-17 | 2015-08-05 | 柳州蔚园塑料彩印包装有限责任公司 | Boring method of toughened plastic part |
| CN105598729A (en) * | 2016-02-02 | 2016-05-25 | 宁波市国冠自动化技术有限公司 | Electric screw driver drilling and positioning device |
| CN106270604A (en) * | 2016-08-23 | 2017-01-04 | 张家港华日法兰有限公司 | A kind of drilling method of flange |
| CN106392659A (en) * | 2016-12-02 | 2017-02-15 | 上海维宏电子科技股份有限公司 | Method for realizing punching based on various materials |
| CN109434474A (en) * | 2018-09-27 | 2019-03-08 | 广东工业大学 | A kind of laser engine Compound Machining hole method of prefabricated pilot hole |
| CN109676380A (en) * | 2019-01-24 | 2019-04-26 | 长春理工大学 | A kind of laser assisted drill unit and its operating method for machining center |
| CN110253161A (en) * | 2019-06-25 | 2019-09-20 | 西南应用磁学研究所 | A kind of gyromagnetic ferrite substrate fast laser through-hole approaches |
| CN112171184A (en) * | 2020-08-12 | 2021-01-05 | 江苏大学 | Composite machining method and device for blade air film hole |
| CN113365755A (en) * | 2019-02-06 | 2021-09-07 | 日本发条株式会社 | Winding machine, manufacturing method of spiral spring and spiral spring |
| CN113523443A (en) * | 2021-07-22 | 2021-10-22 | 盐城市禾鼎机械股份有限公司 | Positioning reference hole surface finishing tool after gear quenching and using method thereof |
| CN113829078A (en) * | 2021-10-22 | 2021-12-24 | 沈阳航空航天大学 | Laser drilling auxiliary drilling device and method |
| CN113843630A (en) * | 2021-10-15 | 2021-12-28 | 华中科技大学 | Laser high-frequency accurate control system and method for selective field-assisted machining |
| CN116851941A (en) * | 2023-05-26 | 2023-10-10 | 武汉亚新汽车零部件有限公司 | Device and method for punching U-shaped frame tube of seat framework |
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| TW200520915A (en) * | 2003-12-23 | 2005-07-01 | Ind Tech Res Inst | Laser-assisted cutting device |
| CN1803392A (en) * | 2005-01-14 | 2006-07-19 | 财团法人工业技术研究院 | Laser-auxiliary cutting device |
| CN101143429A (en) * | 2007-10-24 | 2008-03-19 | 上海水产大学 | Method for trimming laser auxiliary mechanical diamond grinding wheel based on fiber-optical laser |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816341A (en) * | 2015-04-17 | 2015-08-05 | 柳州蔚园塑料彩印包装有限责任公司 | Boring method of toughened plastic part |
| CN105598729A (en) * | 2016-02-02 | 2016-05-25 | 宁波市国冠自动化技术有限公司 | Electric screw driver drilling and positioning device |
| CN106270604A (en) * | 2016-08-23 | 2017-01-04 | 张家港华日法兰有限公司 | A kind of drilling method of flange |
| CN106392659A (en) * | 2016-12-02 | 2017-02-15 | 上海维宏电子科技股份有限公司 | Method for realizing punching based on various materials |
| CN109434474A (en) * | 2018-09-27 | 2019-03-08 | 广东工业大学 | A kind of laser engine Compound Machining hole method of prefabricated pilot hole |
| CN109676380A (en) * | 2019-01-24 | 2019-04-26 | 长春理工大学 | A kind of laser assisted drill unit and its operating method for machining center |
| CN109676380B (en) * | 2019-01-24 | 2020-08-21 | 长春理工大学 | Laser-assisted drilling device for machining center and operation method thereof |
| CN113365755A (en) * | 2019-02-06 | 2021-09-07 | 日本发条株式会社 | Winding machine, manufacturing method of spiral spring and spiral spring |
| CN110253161B (en) * | 2019-06-25 | 2022-01-21 | 西南应用磁学研究所 | Rapid laser through hole method for gyromagnetic ferrite substrate |
| CN110253161A (en) * | 2019-06-25 | 2019-09-20 | 西南应用磁学研究所 | A kind of gyromagnetic ferrite substrate fast laser through-hole approaches |
| CN112171184A (en) * | 2020-08-12 | 2021-01-05 | 江苏大学 | Composite machining method and device for blade air film hole |
| CN112171184B (en) * | 2020-08-12 | 2021-10-12 | 江苏大学 | Composite machining method and device for blade air film hole |
| CN113523443A (en) * | 2021-07-22 | 2021-10-22 | 盐城市禾鼎机械股份有限公司 | Positioning reference hole surface finishing tool after gear quenching and using method thereof |
| CN113843630A (en) * | 2021-10-15 | 2021-12-28 | 华中科技大学 | Laser high-frequency accurate control system and method for selective field-assisted machining |
| CN113843630B (en) * | 2021-10-15 | 2022-07-19 | 华中科技大学 | Laser high-frequency precise control system and method for selective field-assisted machining |
| CN113829078A (en) * | 2021-10-22 | 2021-12-24 | 沈阳航空航天大学 | Laser drilling auxiliary drilling device and method |
| CN116851941A (en) * | 2023-05-26 | 2023-10-10 | 武汉亚新汽车零部件有限公司 | Device and method for punching U-shaped frame tube of seat framework |
| CN116851941B (en) * | 2023-05-26 | 2024-01-26 | 武汉亚新汽车零部件有限公司 | Device and method for punching U-shaped frame tube of seat framework |
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Application publication date: 20140430 |