CN105907942A - Device for intensifying shaft sleeve through underwater laser cavitation and intensifying method of device - Google Patents
Device for intensifying shaft sleeve through underwater laser cavitation and intensifying method of device Download PDFInfo
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- CN105907942A CN105907942A CN201610427582.0A CN201610427582A CN105907942A CN 105907942 A CN105907942 A CN 105907942A CN 201610427582 A CN201610427582 A CN 201610427582A CN 105907942 A CN105907942 A CN 105907942A
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- workpiece
- shaft sleeve
- laser
- lifting platform
- axle sleeve
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Optics & Photonics (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to the field of laser cavitation intensifying and material surface intensifying, in particular to a device and method for conducting surface intensifying on the inner wall of a shaft sleeve through laser-induced vacuole cavitation. The device and method are characterized in that the laser cavitation intensifying technology is applied to machining of the inner surface of a workpiece for the first time, a laser machining device is optimized, the machining period is shortened, and the machining efficiency is improved. The distance between a laser-induced vacuole core and the inner wall of the shaft sleeve is controlled, so that micro jet generated during vacuole collapsing is reasonably utilized for conducting intensifying treatment on the inner surface of the shaft sleeve, the surface residual compressive stress of the inner wall is effectively improved, accordingly, the abrasion resistance of a shaft sleeve workpiece is improved, and the service life of the shaft sleeve workpiece is prolonged.
Description
Technical field
The invention belongs to boss surfaces intensive treatment technology, refer in particular to a kind of underwater laser cavitation reinforcement axle sleeve
Device and method.
Background technology
Axle sleeve is as an important spare part in rotating shaft, and its scope used is widely.Most common
Cause of damage be because in long-term work process, due to be squeezed and and rotating shaft between friction,
Cause axle sleeve that abrasion, plastic deformation occur, shorten service life.But the value of axle sleeve is relatively big, and current repaiies
Compound recipe method is relatively costly, and the most necessary surface to axle sleeve carries out intensive treatment, improves the wearability of axle sleeve
And fatigue life.
The when that laser cavitation strengthening being to utilize bubble collapse, produced microjet carries out surface peening,
It it is a kind of novel surface strengthening technology.Have in hgher efficiency compared with traditional bead method, without dirty
The advantages such as dye.There are some researches show, when the maximum radius of the induced with laser cavity bubble heart distance to target with cavity
Ratio in certain scope when bubble collapse will not produce cavitation phenomenon, crumble and fall on the contrary produce micro-
Material surface can be played invigoration effect by jet and shock wave on the contrary.Utilize the microjet strengthening to material surface
Handling principle is similar with bead, studies have found that under identical processing conditions, by cavitation reinforcement
The fatigue life of material is substantially long than by the material of general bead.
Summary of the invention
The present invention proposes the apparatus and method of a kind of underwater laser cavitation reinforcement boss surfaces, to axle sleeve
Inwall carries out surface Hardening Treatment, improves the residual compressive stress of inner surface, reduces the energy consumption of processing.
For achieving the above object, the technical solution used in the present invention is: a kind of underwater laser cavitation is strong
Changing the device of axle sleeve, including laser generating system and Work-piece processing system, described Work-piece processing system includes processing
Pond, is provided with pedestal and workbench in described processing pond, be provided with two dimension guide rail in described pedestal, and described workbench exists
Integrally-regulated location under the effect of two dimension guide rail；Described workbench lower end is provided with the first lifting platform, described first liter
Fall platform is used for driving described workbench to move up and down in overall, and described workbench upper end table top is provided with the second lifting
Platform, described second lifting platform side is provided with transmission case, and described transmission case is sequentially arranged above with scroll chuck hands
Handle and scroll chuck, described second lifting platform is used for driving described transmission case, described scroll chuck handle and described
Scroll chuck moves up and down in overall.
In such scheme, described first lifting platform, described workbench, described second lifting platform and described transmission
Case is all connected with controller.
In such scheme, also include cistern, the first electric pump and the second electric pump, described first electric pump with add
The outlet in work pond and cistern are connected；Described second electric pump and water inlet and the cistern phase of processing pond
Even.
In such scheme, described laser generating system successively by high power pulsed laser generating means, expand dress
Put, total reflective mirror and laser Machining head are formed by connecting.
In such scheme, described high power pulsed laser generating means, described first electric pump and described second electricity
Pump is all connected with computer.
In such scheme, described laser Machining head is by axicon lens, convex lens, window mirror, window mirror and reflection
Mirror forms；Described laser Machining head is a cuboid device, four sides all have one contour with window mirror
Window mirror, described window mirror material is K9 glass, and one layer of anti-reflection film is posted on surface；Described reflecting mirror is one
Individual rectangular pyramid, four reflectings surface with bottom surface angle are
A kind of method that present invention also offers underwater laser cavitation reinforcement axle sleeve, comprises the steps of A. pre-
Process shaft sleeve workpiece: with washes of absolute alcohol shaft sleeve workpiece surface, remove surface and oil contaminant；B. the determining of shaft sleeve workpiece
Position clamping: with scroll chuck by pretreated Workpiece clamping, make workpiece occur without in the course of processing loosening；
C. make laser Machining head be positioned at the surface of shaft sleeve workpiece by regulation workbench, regulate the second lifting platform and make transmission
Case is positioned at the least significant end of the second lifting platform, regulates the first lifting platform and makes the upper of laser focusing point place plane and workpiece
Place, edge planes overlapping；D. in processing pond, inject aqueous solution to the water surface and exceed shaft sleeve workpiece upper surface；E.
Opening high power pulsed laser generating means, by the parameter of computer regulated incident laser, induction produces cavity,
Control transmission case and the second lifting platform simultaneously, make whole workpiece spiral escalation, decline that countershaft to pack into line spaceization strong
Change；F. close all devices, treated shaft sleeve workpiece is taken off, with dehydrated alcohol, inner wall washing is clean.
In such scheme, in processing pond, injection aqueous solution is 1.5 times beyond the height of shaft sleeve workpiece upper surface
The height of shaft sleeve workpiece.
In such scheme, the rate of climb of the second lifting platform Upper shaft sleeve workpiece is for (I is the interior of shaft sleeve workpiece
Footpath), it is 280～320mm/min that transmission case controls rotating speed, after rising a shaft sleeve workpiece height, the second lifting
Platform Upper shaft sleeve workpiece begins to decline, and decrease speed is (I is the internal diameter of shaft sleeve workpiece), and each change vertically adds
Before work direction, workpiece keeps the most constant turn clockwise (I is the internal diameter of workpiece, and unit is millimeter),
Then proceed to process so circulation until completing the processing of whole sleeve lining.
In such scheme, the laser parameter of high power pulsed laser generating means: optical maser wavelength 1064nm,
Laser energy 200mJ, spot diameter 5mm, pulse width 8ns, frequency 10HZ.
The advantage of the inventive method: 1. after cavitation reinforcement processes, sleeve lining produces residual compressive stress,
Fatigue life is substantially extended, and improves the wearability of axle sleeve.2. strengthening effect compared with general bead
Fruit becomes apparent from, and the course of processing is more environmentally-friendly not to be polluted.3. by the improvement to laser Machining head, thus real
Existing four laser focusing points are processed simultaneously, shorten the process-cycle, drastically increase production efficiency.
Accompanying drawing explanation
The structure principle chart of Fig. 1 apparatus of the present invention.
The laser Machining head schematic diagram of Fig. 2 present invention.
In figure, 1. computer, 2. high-power laser pulse generating means, 3. expand device, 6. incident sharp
Light, 7. total reflective mirror, 8. laser Machining head, 81. axicon lens, 82. incident lasers, 83. convex lenss, 84. windows
Mirror, 85. reflecting mirrors, 9. controller, 10. pedestal, 11. lifting platforms, 12. workbench, 13. vertical workbench,
14. transmission cases, 15. scroll chucks, 16. scroll chuck handles, 17. shaft sleeve workpieces, 18. outlets, 19.
One electric pump, 20. cisterns, 21. second electric pumps, 22. water inlets, 23. processing ponds.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical scheme is described in detail.
As it is shown in figure 1, the device of a kind of underwater laser cavitation reinforcement axle sleeve of the present invention, occur including laser
System and Work-piece processing system, described laser generating system is successively by high power pulsed laser generating means 2, expansion
Bundle device 3, total reflective mirror 7 and laser Machining head 8 are formed by connecting.Described Work-piece processing system includes processing pond 23,
It is provided with pedestal 10 and workbench 12 in described processing pond 23, in described pedestal 10, is provided with two dimension guide rail, described
Workbench 12 is integrally-regulated location under the effect of two dimension guide rail；Described workbench 12 lower end is provided with the first lifting
Platform 11, described first lifting platform 11 is used for driving described workbench 12 to move up and down in overall, described workbench
12 upper end table tops are provided with the second lifting platform 13, and described second lifting platform 13 side is provided with transmission case 14,
Described transmission case 14 is sequentially arranged above with scroll chuck handle 16 and scroll chuck 15, described second lifting
Platform 13 is used for driving described transmission case 14, described scroll chuck handle 16 and described scroll chuck 15 on the whole
Lower motion.Described first lifting platform 11, described workbench 12, described second lifting platform 13 and described transmission case
14 are all connected with controller 9.Additionally, the embodiment of the present invention also includes cistern the 20, first electric pump 19
With the second electric pump 21, described first electric pump 19 is connected with outlet 18 and the cistern 20 in processing pond 23；
Described second electric pump 21 is connected with water inlet 22 and the cistern 20 in processing pond 23.In order to improve automatization
Control level, described high power pulsed laser generating means 2, described first electric pump 19 and described second electric pump
21 are all connected with computer 1.
As in figure 2 it is shown, the laser Machining head 8 of the embodiment of the present invention is a cuboid device, this device position
Below liquid level, it is made up of axicon lens 81, convex lens 83 and reflecting mirror 85 successively inside cuboid；Rectangular
Four sides of body all have a contour window mirror 86, and described window mirror material is K9 glass, and surface is pasted
There is one layer of anti-reflection film；Described reflecting mirror 85 is a rectangular pyramid, and four reflectings surface with bottom surface angle are
Incident laser 82 first passes around axicon lens 81 and eliminates laser interference impact, is then gathered by convex lens 83
Jiao, carries out reflecting by reflecting mirror 85 the most again thus passes through window mirror 84 and produce four focus points in water.
Specific embodiment: shaft sleeve workpiece 7 material is ferrum, internal diameterExternal diameter Φ=40mm, highly
H=60mm, is fixed on scroll chuck after being cleaned up by shaft sleeve workpiece 7 inner surface with dehydrated alcohol, tightens
Scroll chuck handle ensures that workpiece occurs without loosening in process engineering.Transmission case is made to be positioned at by controller regulation
The low side of the second lifting platform, then regulation lifting platform and workbench so that the inwall top edge of shaft sleeve workpiece is with sharp
Focus point spacing 1.5mm of light, opens water pump 19 and is filled to liquid level and exceeds workpiece top edge in processing pond
90mm.Open high power pulsed laser generating means, laser parameter, optical maser wavelength 1064nm, laser are set
Energy 200mJ, spot diameter 5mm, pulse width 8ns, frequency 10HZ.Open merit controller and control second
On lifting platform, the rate of climb of workpiece is 15mm/min, and it is 300mm/min that transmission case controls rotating speed, rises one
After individual workpiece height, keeping the most constant, the workpiece workpiece on the second lifting platform that turns clockwise after 0.3rad declines,
Speed is 15mm/min, and so circulation is until completing the processing of whole sleeve lining.After process finishing, close
All of power supply, takes off the shaft sleeve workpiece processed, uses washes of absolute alcohol.
After laser Machining head is optimized, the cycle time of processing be traditional processing method four/
One, shorten the cycle of processing greatly, improve working (machining) efficiency.To the axle sleeve after underwater laser cavitation reinforcement
Carrying out surface compress residual stresses detection, find that sleeve lining all has residual compressive stress, effect is preferable.
Claims (10)
1. a device for underwater laser cavitation reinforcement axle sleeve, including laser generating system and Work-piece processing system,
It is characterized in that, described Work-piece processing system includes processing pond 23, is provided with pedestal (10) in described processing pond 23
With workbench (12), being provided with two dimension guide rail in described pedestal (10), described workbench (12) is led in two dimension
Integrally-regulated location under the effect of rail；Described workbench (12) lower end is provided with the first lifting platform (11), described
First lifting platform (11) is used for driving described workbench (12) to move up and down in overall, described workbench (12)
Upper end table top is provided with the second lifting platform (13), and described second lifting platform (13) side is provided with transmission case (14),
Described transmission case (14) is sequentially arranged above with scroll chuck handle (16) and scroll chuck (15), described
Second lifting platform (13) is used for driving described transmission case (14), described scroll chuck handle (16) and described
Scroll chuck (15) moves up and down in overall.
The device of a kind of underwater laser cavitation reinforcement axle sleeve the most according to claim 1, it is characterised in that
Described first lifting platform (11), described workbench (12), described second lifting platform (13) and described transmission case
(14) all it is connected with controller (9).
The device of a kind of underwater laser cavitation reinforcement axle sleeve the most according to claim 1 and 2, its feature exists
In, also include cistern (20), the first electric pump (19) and the second electric pump (21), described first electric pump (19)
It is connected with outlet (18) and the cistern (20) of processing pond (23)；Described second electric pump (21) with
The water inlet (22) of processing pond (23) and cistern (20) are connected.
The device of a kind of underwater laser cavitation reinforcement axle sleeve the most according to claim 3, it is characterised in that
Described laser generating system successively by high power pulsed laser generating means (2), expand device (3), total reflective mirror
(7) it is formed by connecting with laser Machining head (8).
The device of a kind of underwater laser cavitation reinforcement axle sleeve the most according to claim 4, it is characterised in that
Described high power pulsed laser generating means (2), described first electric pump (19) and described second electric pump (21)
All it is connected with computer (1).
The device of a kind of underwater laser cavitation reinforcement axle sleeve the most according to claim 4, it is characterised in that
Described laser Machining head (8) is a cuboid device, inside successively by axicon lens (81), convex lens (83),
Form with reflecting mirror (85)；All there is a window mirror contour with window mirror (86) four sides of cuboid
(84), described window mirror (84) material is K9 glass, and one layer of anti-reflection film is posted on surface；Described reflection
Mirror (85) is a rectangular pyramid, and four reflectings surface with bottom surface angle are
7. a method for underwater laser cavitation reinforcement axle sleeve, comprises the steps of
A. pretreatment shaft sleeve workpiece: with washes of absolute alcohol shaft sleeve workpiece surface, remove surface and oil contaminant；
B. the location clamping of shaft sleeve workpiece: with scroll chuck by pretreated Workpiece clamping, make workpiece in processing
During occur without loosening；
C. make laser Machining head be positioned at the surface of shaft sleeve workpiece by regulation workbench, regulate the second lifting platform and make
Transmission case is positioned at the least significant end of the second lifting platform, regulates the first lifting platform and makes laser focusing point place plane and workpiece
Top edge place planes overlapping；
D. in processing pond, inject aqueous solution to the water surface and exceed shaft sleeve workpiece upper surface；
E. opening high power pulsed laser generating means, by the parameter of computer regulated incident laser, induction is produced
Raw cavity, controls transmission case and the second lifting platform simultaneously, makes whole workpiece spiral escalation, declines countershaft packing into
Row cavitation reinforcement；
F. close all devices, treated shaft sleeve workpiece is taken off, with dehydrated alcohol, inner wall washing is clean.
The method of a kind of underwater laser cavitation reinforcement axle sleeve the most according to claim 7, it is characterised in that
The aqueous solution height that height is 1.5 times of shaft sleeve workpieces beyond shaft sleeve workpiece upper surface is injected in processing pond.
9. according to the method for a kind of underwater laser cavitation reinforcement axle sleeve described in claim 7 or 8, its feature
Being, the rate of climb of the second lifting platform Upper shaft sleeve workpiece is(I is the interior of shaft sleeve workpiece to mm/min
Footpath), it is 280～320mm/min that transmission case controls rotating speed, after rising a shaft sleeve workpiece height, the second lifting
Platform Upper shaft sleeve workpiece begins to decline, and decrease speed isMm/min (I is the internal diameter of shaft sleeve workpiece), often
Before the vertical machine direction of secondary change, workpiece keeps the most constant turning clockwise(I is the interior of workpiece to rad
Footpath, unit is millimeter), then proceed to process so circulation until completing the processing of whole sleeve lining.
10. according to the method for a kind of underwater laser cavitation reinforcement axle sleeve described in claim 7 or 8, its feature
It is, the laser parameter of high power pulsed laser generating means: optical maser wavelength 1064nm, laser energy 200mJ,
Spot diameter 5mm, pulse width 8ns, frequency 10HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427582.0A CN105907942B (en) | 2016-06-16 | 2016-06-16 | A kind of device and its intensifying method of underwater laser cavitation reinforcement axle sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427582.0A CN105907942B (en) | 2016-06-16 | 2016-06-16 | A kind of device and its intensifying method of underwater laser cavitation reinforcement axle sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN105907942A true CN105907942A (en) | 2016-08-31 |
| CN105907942B CN105907942B (en) | 2018-01-16 |
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| CN201610427582.0A Expired - Fee Related CN105907942B (en) | 2016-06-16 | 2016-06-16 | A kind of device and its intensifying method of underwater laser cavitation reinforcement axle sleeve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557564A (en) * | 2017-08-29 | 2018-01-09 | 江苏大学 | A kind of apparatus and method for improving the anti-cavitation pitting ability of wet liner |
| CN111485094A (en) * | 2020-04-23 | 2020-08-04 | 江苏大学 | Device and method for strengthening inner wall and outer wall of metal pipe through laser shock |
| CN113102832A (en) * | 2021-04-20 | 2021-07-13 | 湖南泰嘉新材料科技股份有限公司 | Band sawing machine and sawing method |
| CN113234918A (en) * | 2021-03-25 | 2021-08-10 | 山东大学 | Double-physical-effect pulse laser impact method with defocusing amount |
| WO2022151918A1 (en) * | 2021-01-14 | 2022-07-21 | 中国长江三峡集团有限公司 | Experimental device for determining degree of influence of cavitation bubble on target material based on deformation of target material |
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| CN1745955A (en) * | 2005-10-14 | 2006-03-15 | 江苏大学 | Method and apparatus for supercharging water constraint layer based on laser impact technology |
| CN103409599A (en) * | 2013-08-29 | 2013-11-27 | 江苏大学 | Device and method for strengthening gear of gear pump by using underwater laser impact |
| CN103805769A (en) * | 2014-01-21 | 2014-05-21 | 江苏大学 | Prismatic irregular hole underwater laser shock peening method and device for realizing same |
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2016
- 2016-06-16 CN CN201610427582.0A patent/CN105907942B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1745955A (en) * | 2005-10-14 | 2006-03-15 | 江苏大学 | Method and apparatus for supercharging water constraint layer based on laser impact technology |
| CN103409599A (en) * | 2013-08-29 | 2013-11-27 | 江苏大学 | Device and method for strengthening gear of gear pump by using underwater laser impact |
| CN103805769A (en) * | 2014-01-21 | 2014-05-21 | 江苏大学 | Prismatic irregular hole underwater laser shock peening method and device for realizing same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557564A (en) * | 2017-08-29 | 2018-01-09 | 江苏大学 | A kind of apparatus and method for improving the anti-cavitation pitting ability of wet liner |
| CN111485094A (en) * | 2020-04-23 | 2020-08-04 | 江苏大学 | Device and method for strengthening inner wall and outer wall of metal pipe through laser shock |
| WO2022151918A1 (en) * | 2021-01-14 | 2022-07-21 | 中国长江三峡集团有限公司 | Experimental device for determining degree of influence of cavitation bubble on target material based on deformation of target material |
| CN113234918A (en) * | 2021-03-25 | 2021-08-10 | 山东大学 | Double-physical-effect pulse laser impact method with defocusing amount |
| CN113102832A (en) * | 2021-04-20 | 2021-07-13 | 湖南泰嘉新材料科技股份有限公司 | Band sawing machine and sawing method |
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| Publication number | Publication date |
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| CN105907942B (en) | 2018-01-16 |
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