CN106346192A - Ultrasonic rolling technique - Google Patents
Ultrasonic rolling technique Download PDFInfo
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- CN106346192A CN106346192A CN201610823005.3A CN201610823005A CN106346192A CN 106346192 A CN106346192 A CN 106346192A CN 201610823005 A CN201610823005 A CN 201610823005A CN 106346192 A CN106346192 A CN 106346192A
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Classifications
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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
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/02—Treating or finishing by applying pressure, e.g. knurling
-
- 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
Abstract
The invention provides an ultrasonic rolling technique. The ultrasonic rolling technique comprises step as follows: an ultrasonic rolling processing device adaptive to a complicated surface is provided and comprises a casing assembly, a hydraulic assembly and an ultrasonic assembly, wherein the ultrasonic assembly is fixed in the casing assembly and connected with the hydraulic assembly, the ultrasonic assembly comprises a transducer, an amplitude-change pole and a tool head, the transducer is connected with an ultrasonic generator, two edge curves of a radial section of the amplitude-change pole are bezier curves, a first end of the amplitude-change pole is connected to a first end of the transducer, and the tool head is detachably connected to a second end of the amplitude-change pole; the ultrasonic rolling processing device is clamped to a machine tool, and the tool head is arranged in the position in slight contact with a to-be-processed surface of a workpiece; the hydraulic assembly is adjusted to output 100-2,000 N static pressure; the ultrasonic assembly is adjusted, and axial amplitude of an output end of the amplitude-change pole is enabled to be 5-30 mu m; meanwhile, a motion trail of the machine tool is set for ultrasonic rolling processing. The ultrasonic rolling technique has the advantages of high efficiency, low energy loss and the like.
Description
Technical field
The present invention relates to metal surface treating apparatus field, more particularly, to a kind of ultrasonic burnishing process.
Background technology
Surface rolling strengthening is a kind of preferable surface peening means, and it can prepare fine and closely woven nanometer in component surface
Layer, improves material various aspects of performance coefficient；Also can make to putting in impaired surface of the work, such as aircraft engine blade
With this base part carry out secondary reparation, extend the military service cycle, and obtain nano level surface smoothness simultaneously, for reducing by zero
The roughness on part surface, introducing residual compressive stress, improve the corrosion-resistant, wearability of part and anti-fatigue performance are respectively provided with important meaning
Justice.
Ultrasonic burnishing processing is the method for work being combined using ultrasonic impact energy and static load rolling, is a kind of more efficient
Processing mode.In the machining tool head that existing ultrasonic and rolling combine, one kind is that rolling tool is fixed on swivel mount
On, process surface axially and radially；Another kind is force application part to be combined the cylinder work head rolling, and can process flat table
Face.Ultrasonic surface rolling depression method is generalized to curved-surface structure, there is important economical and practical value and wide application prospect.
Existing ultrasonic burnishing process generally has that range ability is less, and its range of work cannot meet higher-strength
Material experiment desirable strength requires.And the head shell for fixing head tool heads of existing ultrasonic burnishing processing unit (plant) with
Housing main body is integrally formed or is unremovably fixedly connected, and nothing will abrasion but in head shell in use for some time
The situation that method is changed, causes tool heads to pitch it is impossible to the fixation that recurs；And the existing apparatus after wearing and tearing can affect the essence of processing
Degree, such as sets identical parameter after same material surface treatment a period of time, will be different for the result obtaining.
Content of the invention
For above-mentioned deficiency of the prior art, the present invention provides a kind of ultrasonic burnishing process, has efficiency high, energy
Amount loss is less, small volume, long service life, thermal diffusivity are good, motility is high, versatility good and lightweight advantage.
To achieve these goals, a kind of ultrasonic burnishing process of the present invention, comprises the steps: s1, provides one
Plant the ultrasonic burnishing processing unit (plant) being adapted to complex surface, comprising: a housing unit；One hydraulic package；And a ultrasonic assembly,
Described ultrasonic assembly is fixed in described housing unit and connects described hydraulic package, and described ultrasonic assembly includes: a transducer,
Described transducer is connected with a ultrasonic generator；One horn, the two edges curve of its radial section is Bezier；Described
The first end of horn is connected to the first end of described transducer；With tool heads, described tool heads are removably attachable to institute
State the second end of horn；S2, the described ultrasonic burnishing processing unit (plant) being adapted to complex surface is held on lathe, and by work
Tool head is placed in the position of the surface to be treated touching workpiece；S3, adjusting described hydraulic package makes it export the static pressure of 100-2000n
Power；S4, adjusting ultrasonic assembly makes the outfan axial amplitude of the adjacent tools head of horn be 5～30 μm；Concurrently set lathe
Movement locus carry out ultrasonic burnishing processing.
Preferably, described hydraulic package includes: a hydraulic pump, a fluid pressure line and the hydraulic jack being sequentially connected,
One hydralic pressure gauge is arranged on described fluid pressure line, and described hydraulic jack is fixed in described housing unit and neighbouring described transducing
Second end of device.
Preferably, it is provided with an elastomer, the material of described elastomer between described hydraulic jack and described transducer
For compounded rubber.
Preferably, described housing unit includes: a shell and a ultrasonic fixation kit, and described ultrasonic assembly passes through described super
Sound fixation kit is installed on described inside the shell；Described ultrasonic fixation kit includes a cannulated sleeve and is located at described cannulated sleeve two
First end cap at end and the second end cap；Described first end cap is sheathed on the second end of described transducer, and described elastomer is arranged at
Between described hydraulic jack and described first end cap；Form a first through hole in the middle part of described second end cap, described horn
One second end is stretched out from described first through hole.
Preferably, described shell includes a main body cover, a head shell and a fixture；Described main body cover one becomes
Type；Form the second through hole in the middle part of described fixture；Described fixture is connected described main body cover and is coordinated with described main body cover
Form an installing space, described ultrasonic assembly is arranged in described installing space；Described horn second end is logical from described first
Hole and described second through hole stretch out；Described head shell is removably attachable to described main body cover and covers at described horn
Outside second end.
Preferably, described shell also includes a head fixed cover, and described head fixed cover is detachably secured to described head
The end of portion's shell.
Preferably, described tool heads include ball, and ball is fixed in head fixed cover, and horn end thread connects one
Cylinder, cylinder ends conflict ball, end plane has the pit of an envelope ball.
Preferably, the setting value of described ultrasonic generator is 28khz.
Preferably, feed-speed is set in 2～10 meters of scopes per minute, processing come and go number of times be set as 2～
10 times.
Preferably, the outfan axial amplitude of the adjacent tools head of horn is 6～24 μm.
The present invention is due to employing above technical scheme so as to have the advantages that
Ultrasonic generator is used for providing power supply.The fluctuation that transducer is used for producing ultrasonic generator is converted into vertically
Vibrations.Horn is used for amplifying the vibration amplitude of transducer generation., there is phase in tool heads and workpiece to be processed surface directly contact
Interaction.The two edges curve of the radial section of horn is Bezier, and so available higher axial displacement is amplified
Multiplying power and less section stress.Tool heads are removably attachable to described horn so that tool heads can easily be carried out
Change.Hydralic pressure gauge using facilitating the real-time monitoring to hydraulic line pressure, facilitate operator pressure occur decay when
Adjusted manually, kept the pressure value setting.Compared to common spring, using the deformation system of the elastomer of compounded rubber material
Number is less, thus can produce less deformation under uniform pressure effect, saves installing space.The employing of hollow-out parts can be
The weight of alleviator on the basis of proof strength.Head fixed cover is detachably secured to the end of described head shell, makes
Obtain head fixed cover to occur can easily be replaced during abrasion during using, decrease the maintenance cost of device,
Ensure that the precision of the course of processing.Main body cover is integrally formed, and decreases coupling part, can reduce due to connecting portion generation
SATT or interference.Radiator fan and louvre are all used for carrying out radiating and cooling to ultrasonic assembly.
Brief description
Fig. 1 is the ultrasonic assembly of ultrasonic burnishing processing unit (plant) and the housing group that are adapted to complex surface of the embodiment of the present invention
The attachment structure schematic diagram of part；
Fig. 2 is the structural representation of the hydraulic package of the embodiment of the present invention；
Fig. 3 is the structural representation of the ultrasonic generator of the embodiment of the present invention；
Fig. 4 is the attachment structure schematic diagram of a kind of tool heads of the embodiment of the present invention and head fixed cover；
Fig. 5 is the schematic diagram of the angle between ball and head fixed cover in one embodiment of the present of invention；
Fig. 6 a is crystal grain schematic diagram before ultrasonic burnishing for the workpiece；
Fig. 6 b is crystal grain schematic diagram after ultrasonic burnishing for the workpiece.
Specific embodiment
Below in conjunction with the accompanying drawings, provide presently preferred embodiments of the present invention, and be described in detail, make to be better understood when this
Bright function, feature.
Include first providing a kind of ultrasonic burnishing being adapted to complex surface according to the ultrasonic burnishing process of the present invention
Processing unit (plant).Refer to Fig. 1, a kind of ultrasonic burnishing processing unit (plant) being adapted to complex surface of the present invention, comprising: a housing group
Part 1, a hydraulic package 2 and a ultrasonic assembly 3, wherein, a part for hydraulic package 2 and ultrasonic assembly 3 are fixed on housing group
In part 1, and this part of hydraulic package 2 passes through elastomer 4 conflict ultrasonic assembly 3, and ultrasonic assembly 3 is in horizontal type structure.
Specifically, housing unit 1 includes: a shell 11 and a ultrasonic fixation kit 12, and ultrasonic assembly 3 passes through ultrasonic solid
Determine assembly 12 to be installed in shell 11.
In the present embodiment, shell 11 includes a main body cover 111, a head shell 112 and a fixture 113, fixture
113rd, head shell 112 is all socketed on one end of main body cover 111, more radially secure by bolt, is allowed to not move axially.
Wherein, main body cover 111 is integrally formed, and decreases coupling part, can reduce the SATT or dry because connecting portion produces
Disturb.Fixture 113 and main body cover 111 cooperatively form an installing space, and ultrasonic assembly 3 is arranged in installing space.This enforcement
In example, shell 11 also includes a head fixed cover 114, and head fixed cover 114 is detachably secured to the end of head shell 112
Portion, so that head fixed cover 114 occurs can easily be replaced during abrasion during using, decreases the dimension of device
Shield cost is it is ensured that the precision of the course of processing.
In the present embodiment, ultrasonic fixation kit 12 includes: one first end cap 121, one second end cap 122 and a cannulated sleeve
123, the first end cap 121 and the second end cap 122 are bolted on the two ends of cannulated sleeve 123, the side wall of cannulated sleeve 123
Open up at least one hollow-out parts (not shown), can on the basis of proof strength alleviator weight, in the present embodiment, engrave
Empty portion adopts elliptical aperture.First end cap 121 and the second end cap 122 connect main body cover 111.
Incorporated by reference to Fig. 1 and Fig. 2, hydraulic package 2 includes: a hydralic pressure gauge 21, the hydraulic pump 22 being sequentially connected, a hydraulic tube
Road 23 and a hydraulic jack 24.
In the present embodiment, hydralic pressure gauge 21 is located at fluid pressure line 23 front end, can real-time monitoring pressurized state.Hydraulic pump 22 adopts
Manual pump, if having pressure in process to have changing by a small margin, can adjust in time.The cooperation of hydralic pressure gauge 21 and manual pump is convenient
Operator are adjusted manually when pressure occurs decay, keep the pressure value setting.Hydraulic jack 24 adopts flat thousand
Jin top, the piston of hydraulic jack 24 contacts the first end cap 121 by elastomer 4, and hydraulic jack 24 is passed through to promote first end
Lid 121 applies a force to ultrasonic assembly 3.
Return again to Fig. 1, ultrasonic assembly 3 includes: a transducer 31, a horn 32 and the tool heads 33 being sequentially connected.
Wherein, form phase respectively between transducer 31 first end and horn 32 first end and horn 32 second end and tool heads 33
The helicitic texture of mutual cooperation is simultaneously concavo-convex threaded by helicitic texture, needing to tighten it is ensured that fitting tightly, preventing in assembling process
Stop energy and produce loss in transmittance process.Screw connection structure between horn 32 second end and tool heads 33 makes work
Tool 33 can easily be changed, to adapt to different process requirements.Due to the convertibility of tool heads 33, can be according to need
To select the tool heads 33 of different size shape.When in working order, ultrasonic assembly 3 produces supersonic frequency machinery in the axial direction and shakes
Dynamic, stimulation tool head 33 does ultrasonic frequency vibration.In the present embodiment, the first end cap 121 of ultrasonic fixation kit 12 is sheathed on transducing
Second end of device 31；Transducer 31 is contained within one group of piezoelectric ceramic piece (not shown), in corresponding transducer 31 piezoelectric ceramic piece
It is fixed with the radiating that a radiator fan 5 is used for transducer 31 in the shell 11 of position, this also can not be installed in other embodiments
Radiator fan 5.Radiator fan 5 can be with all-purpose adhesive and main body cover 111 gluing.
In the present embodiment, the second end cap 122 middle part of ultrasonic fixation kit 12 forms a first through hole, fixture 113
Middle part formation one second hole all；Horn 32 second end is stretched out from first through hole and the second through hole；Head shell 112 covers at
Outside horn 32 second end.
In the present embodiment, tool heads 33 can be arranged in a tool heads fixing axle 115, in other embodiments, also may not be used
Using tool heads fixing axle 115, tool heads 33 are directly fixed in head fixed cover 114.Detachable in tool heads fixing axle 115
Ground is fixed on head fixed cover 114, in the present embodiment, is tied by screw thread between tool heads fixing axle 115 and head fixed cover 114
Structure connects.
Due to horn 32 and tool heads 33 vibration frequency higher be also required to radiate, the main body cover 111 of shell 11 and/or
Head shell 112 offers louvre (not shown).Louvre wherein on head shell 112 is near processing workpiece, punching
Afterwards, the coolant that can pass through to spray into outside when Direct Air-Cooled or processing is radiated.
In addition, in the present embodiment, ultrasonic assembly 3 is connected with main body cover 111 in vibration nodal point position, transducer 31
The vibration nodal point of portion and horn 32 is located at the resting position of ultrasonic assembly 3 vibrations.The vibrations node about position of wherein horn 32
In transducer 31 at 1/3 position at the second end, particular location can be by related tool (such as: ansys) preparation simulation vibrations
Design sketch obtains.Ultrasonic assembly 3 fixes the first end cap 121 and the second end cap 122 and main body cover 111 phase at vibration nodal point
Even, the first end cap 121 and the second end cap 122 and main body cover 111 interference fit.
Please join and be used for providing power supply to ultrasonic assembly 3 with reference to 1 and Fig. 3, one ultrasonic generator 34, by electric wire 35 by accessing
Hole 115 is accessed and is connected transducer 31, and the joint soldering between electric wire 35 and transducer 31 prevents from leaking electricity.Radiator fan 5
Power supply also can be incorporated in the electronic box of ultrasonic generator 34.
In the present embodiment, ultrasonic generator 34 has the function of automatic tracing frequency in certain limit, that is, automatically adjust defeated
Going out voltage and current makes the frequency of connected vibration body reach setting value, and setting value is 28khz, higher than typically using on the market
20khz, higher energy density is provided.Because processing power demand is in a kilowatt rank, transducer 31 adopts 28khz piezoelectricity to make pottery
Porcelain transducer, performance is more stable.Compared with the prior art of the 20khz using on the market, the ultrasonic generator 34 of the present invention by
In there is higher frequency and so that the size reduction of the horn 32 using cooperatively about half so that whole sound rolling and processing dress
That puts is smaller, and design is more compact.In the course of processing of cooperation lathe, relevance grade is higher.
In the present embodiment, the fluctuation that transducer 31 is used for producing ultrasonic generator 34 is converted into vibrations vertically.Become
Width bar 32 is used for amplifying the vibration amplitude of transducer 31 generation.The two edges curve of the radial section of horn 32 is that Bezier is bent
Line, Bezier has four control point, and the difference of curve shape can be caused in the position at control point；Imported bent with solidworks
Line simultaneously sets up the threedimensional model of horn, imports finite element software and calculates, and carries out model analyses under conditions of extraneous 28khz
And harmonic responding analysis；After test repeatedly, obtain the optimum dimension curve of vibrating effect, that is, the amplification coefficient of end is higher, and should
Power distribution is more uniform, and maximum stress is less.
For the horn 32 of equal length, it is compared with ratio one timing in large end face and small end face, this kind of Curve Design
The horn 32 going out has bigger vibrations amplification coefficient and less stress concentration, so can get higher axial displacement and puts
Big multiplying power and less section stress are so that horn 32 has bigger axial amplitude, and increased the use of horn 32
Life-span.The outfan axial amplitude of horn 32 adjacent tools 33 is 5～30 μm.Tool heads 33 are straight with workpiece to be processed surface
Contact, interacts.
Refer to Fig. 1, elastomer 4 can buffer the impact momentum that tool heads 33 are produced with workpiece rigid contact, form one
Plant the contact of " flexible ".In the present embodiment, the material of elastomer 4 is compounded rubber.Compared to common spring, using compounded rubber
The deformation coefficient of the elastomer 4 of material is less, thus can produce less deformation under uniform pressure effect, saves and installs sky
Between.
Below the concrete form of above-mentioned tool heads 33 is illustrated:
Refer to Fig. 4, tool heads 33 are spherical ball type, this tool heads 33 includes ball 331, and ball 331 is fixed on head
In portion's fixed cover 114, head fixed cover 114 is spirally connected with head shell 112, and horn 32 end thread connects a cylinder, circle
Cylindrical end portions conflict ball 331, end plane has the pit of an envelope ball, and pit is axially equipped with a number of little
Hole, reduces friction in the case of ensureing vibrations conduction, prevents ball 331 in the course of processing stuck.Can design according to demand
The ball 331 of different sphere diameters, different balls 331 is furnished with the head fixed cover 114 of different size, and concrete size will according to sample
Depending on asking, by being illustrated as scaling reducing.
Next included the above-mentioned ultrasonic rolling being adapted to complex surface according to the ultrasonic burnishing process of the present invention
Pressure processing unit (plant) is held on lathe, and tool heads 33 is placed in the position of the surface to be treated touching workpiece.
Next ultrasonic burnishing process according to the present invention includes being pressurized hydraulic hand-pump 22, makes in fluid pressure line 23
Pressure rise in the range of 501-2000n.For static pressure is in the prior art of 50-500n, the present invention's is super
The static pressure of sound rolling technology significantly increases, the material higher such that it is able to process intensity.
Next ultrasonic burnishing process according to the present invention includes setting the movement locus accommodating lathe so that instrument
Produce relative movement between 33 and the surface to be treated of workpiece, wherein, feed-speed be set in 2～10 meters per minute
In the range of, processing comes and goes number of times and is set as 2～10 times, and the outfan axial amplitude of the adjacent tools 33 of horn 32 is 5～
30μm.Preferably, feed-speed is set in 2-5 rice scope per minute, thus by relatively low reciprocating feed speed
To obtain preferable surface quality.Preferably, process round number of times to be set as 2-6 time, thus improving degree of grain refinement and receiving
Rice layer depth.It should be understood that it is not The more the better that processing comes and goes number of times, because processing, number of times is more to affect ultrasonic burnishing work
The efficiency of skill.Preferably, the outfan axial amplitude of horn 32 adjacent tools 33 is 6～24 μm.
The ultrasonic burnishing processing unit (plant) being adapted to complex surface of the present invention improves the connection of each part, is allowed to integration
Degree is higher；In the case of ensureing by force, compressor size, it is allowed to be subject to less limiting in the application of lathe；Improve
Biasing strength maximum, is allowed to be applied to the higher material of intensity, has that performance is more excellent, the scope of application is wider, it is strong to be applied to
The degree surface treatment of higher material and the advantage of precise control.
In the ultrasonic burnishing process according to the present invention, the service life of ball 331 is about in the scope of 30-48 hour
Interior.When the surface to be treated of workpiece is plane, ball 331 is the longest can be used 48 hours, and this ball 331 is not in all card
Stubbornly refuse situation about turning；When the surface to be treated of workpiece is disc, ball 331 can be more preferably after using 30 hours；Work as workpiece
Surface to be treated be curved surface when it should according to practical situation take the circumstances into consideration change, such as carry out more after having processed 1-2 workpiece
Affect treatment effect to guarantee to there is not stuck phenomenon well.
In a particularly preferred embodiment, the angle between ball 331 and head fixed cover 114 is 19 °, such as Fig. 5
Shown.This angle be shown as the line of ball 331 and head fixed cover 114 port and head fixed cover 114 radially between folder
Angle.By the setting of this angle, when the surface to be treated of workpiece is curved surface, the angle that can adjust tool heads 33 makes instrument
33 are remained in the range of 71 °～90 ° with the surface to be treated of workpiece, affect surface of the work matter to prevent from scratching
Amount.It should be understood that this angle can adjust in the range of 15-24 °.If angle too small, lead to scratch and take place frequently, and if angle
Spend big, lead to intensity to be affected.
In a particularly preferred embodiment, tool heads 33 by hard alloy (i.e. kennametal yt15) or
Toughened ceramic material is formed, and such that it is able to process to the instrument with higher-strength, and can improve and be formed on workpiece
Nano-crystalline layers.
For the higher titanium alloy of intensity hardness (more than such as yield strength 800mpa, more than hardness hrc50) or
The workpiece of the material manufactures such as gh4169, and workpiece less (plate of material within such as 50*100mm) Surface Quality have high thick
Rugosity requires (surface roughness is up to 0.1 micron), then rolling and processing process should select diameter to be less than 5mm (such as 3mm specification)
Ball 331.
For intensity higher (such as yield strength 500～800mpa, hardness be hrc30 about material, or yield strength
300～500mpa, material more than hardness 50hrc) the workpiece manufacturing as Hardmetal materials, if workpiece rolling scope is relatively
Greatly (specification more than such as 200*500mm area), roughness and degree of grain refinement there are certain requirements (such as surface roughness
Reach 0.3 micron), then select the ball 331 of diameter 5mm.
For the material of yield strength 300～500mpa, hardness 30hrc about material (as 45 steel, No. 20 steel etc.) system
The workpiece made, if Surface Quality there are certain requirements, the ball 331 of a semi-selection 8mm sphere diameter in the course of processing.
For the material of the manufactures such as copper, almag, quality is softer, selects the ball 331 of 10mm sphere diameter to process.And
If processing duration can not long it is desirable to the quick sample processing, even being made up of Materials with High Strength such as titanium alloys, same select
The head of 10mm sphere diameter, the impact to surface roughness for the less sphere diameter of processing effect is larger, but increases processing pass, plastic deformation
Amount increases, and also can reach corresponding degree of grain refinement, and surface roughness is about 0.4 micron.
Coating lubricating fluid on ball 331 is additionally included according to the ultrasonic burnishing process of the present invention, to reduce tool heads
Friction between 33 and workpiece to be machined；Take away the heat that processing produces simultaneously, prevent in the course of processing material to raise because of temperature
Material to workpiece and tool heads 33 cause extra impact.For example for tool steel such as 45 steel, this kind of steel heat resistance is poor,
The cooling effect seeking coolant will be got well, and typically adopts emulsion；For the steel alloy containing elements such as NI-Gs, using oil base or
Water-base cutting fluid.Process high performance material such as tc4 etc., typically select the oil base cutting fluid containing antiwear additive, exist simultaneously
The cutting fluid that the part of workpiece and processed sample contacts sprays big flow ensures heat dissipation capacity.
Crystal grain before ultrasonic burnishing for the workpiece is as shown in Figure 6 a.After rolling, workpiece material forms one layer of cause on surface
Close nanostructured surface laye, the shaft-like such as formation, crystal grain orientation are nanocrystalline in random distribution, and crystal grain has obtained significantly thin
Change, case hardness improves, surface roughness reduces, as shown in Figure 6 b.
Above record, only presently preferred embodiments of the present invention, it is not limited to the scope of the present invention, the present invention's is upper
State embodiment can also make a variety of changes.I.e. every claims according to the present patent application and description are made
Simply, equivalence changes and modification, falls within the claims of patent of the present invention.
Claims (10)
1. a kind of ultrasonic burnishing process, comprises the steps:
S1, provides a kind of ultrasonic burnishing processing unit (plant) being adapted to complex surface, comprising:
One housing unit；
One hydraulic package；And
One ultrasonic assembly, described ultrasonic assembly is fixed in described housing unit and connects described hydraulic package, described ultrasonic group
Part includes:
One transducer, described transducer is connected with a ultrasonic generator；
One horn, the two edges curve of its radial section is Bezier；The first end of described horn is connected to described
The first end of transducer；With
One tool heads, described tool heads are removably attachable to the second end of described horn；
S2, the described ultrasonic burnishing processing unit (plant) being adapted to complex surface is held on lathe, and tool heads are placed in touch
The position of the surface to be treated of workpiece；
S3, adjusting described hydraulic package makes it export the static pressure of 100-2000n；
S4, adjusting ultrasonic assembly makes the outfan axial amplitude of the adjacent tools head of horn be 5～30 μm；Concurrently set lathe
Movement locus carry out ultrasonic burnishing processing.
2. ultrasonic burnishing process according to claim 1 is it is characterised in that described hydraulic package includes: connects successively
A hydraulic pump, a fluid pressure line and the hydraulic jack connecing, a hydralic pressure gauge is arranged on described fluid pressure line, described hydraulic pressure thousand
The second end of the interior and neighbouring described transducer of described housing unit is fixed on jin top.
3. ultrasonic burnishing process according to claim 2 is it is characterised in that described hydraulic jack and described transducing
It is provided with an elastomer, the material of described elastomer is compounded rubber between device.
4. ultrasonic burnishing process according to claim 3 is it is characterised in that described housing unit includes: a shell
With a ultrasonic fixation kit, described ultrasonic assembly is installed on described inside the shell by described ultrasonic fixation kit；
Described ultrasonic fixation kit includes a cannulated sleeve and the first end cap being located at described cannulated sleeve two ends and the second end cap；
Described first end cap is sheathed on the second end of described transducer, and described elastomer is arranged at described hydraulic jack and described first
Between end cap；Form a first through hole, one second end of described horn is stretched from described first through hole in the middle part of described second end cap
Go out.
5. ultrasonic burnishing process according to claim 4 it is characterised in that described shell include a main body cover,
One head shell and a fixture；Described main body cover is integrally formed；Form the second through hole in the middle part of described fixture；Described fixation
Part connects described main body cover and cooperatively forms an installing space with described main body cover, and described ultrasonic assembly is arranged at described peace
In dress space；Described horn second end is stretched out from described first through hole and described second through hole；Described head shell is detachable
Be connected to described main body cover and cover at outside described horn second end.
6. ultrasonic burnishing process according to claim 5 is it is characterised in that described shell also includes a head fixes
Set, described head fixed cover is detachably secured to the end of described head shell.
7. ultrasonic burnishing process according to claim 6 is it is characterised in that described tool heads include ball, ball
It is fixed in head fixed cover, horn end thread connects a cylinder, cylinder ends conflict ball, and end plane has
The pit of one envelope ball.
8. ultrasonic burnishing process according to claim 1 is it is characterised in that the setting value of described ultrasonic generator is
28khz.
9. ultrasonic burnishing process according to claim 1 is it is characterised in that feed-speed is set in 2～10
In rice scope per minute, processing comes and goes number of times and is set as 2～10 times.
10. ultrasonic burnishing process according to claim 1 it is characterised in that the adjacent tools head of horn defeated
Go out to hold axial amplitude to be 6～24 μm.
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| CN112899454B (en) * | 2021-01-14 | 2022-03-18 | 上海交通大学 | Surface strengthening device and method for applying elastic stress field to metal workpiece and assisting ultrasonic rolling |
| CN113981188A (en) * | 2021-09-23 | 2022-01-28 | 华东理工大学 | Trajectory-controllable bilateral ultrasonic rolling surface strengthening device |
| CN114654178A (en) * | 2022-05-17 | 2022-06-24 | 山东建筑大学 | Machining method for high-precision wear-resistant turbocharger bearing |
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Address after: 200237 No. 130, Meilong Road, Shanghai, Xuhui District Patentee after: EAST CHINA University OF SCIENCE AND TECHNOLOGY Country or region after: China Patentee after: AECC COMMERCIAL AIRCRAFT ENGINE Co.,Ltd. Address before: 200237 No. 130, Meilong Road, Shanghai, Xuhui District Patentee before: EAST CHINA University OF SCIENCE AND TECHNOLOGY Country or region before: China Patentee before: AVIC COMMERCIAL AIRCRAFT ENGINE Co.,Ltd. |