CN110450043A - A kind of grinding mechanism - Google Patents
A kind of grinding mechanism Download PDFInfo
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- CN110450043A CN110450043A CN201910804213.2A CN201910804213A CN110450043A CN 110450043 A CN110450043 A CN 110450043A CN 201910804213 A CN201910804213 A CN 201910804213A CN 110450043 A CN110450043 A CN 110450043A
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- Prior art keywords
- clump weight
- grinding
- pressure
- skive
- workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/005—Control means for lapping machines or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/017—Devices or means for dressing, cleaning or otherwise conditioning lapping tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Disclose a kind of grinding mechanism, the grinding mechanism includes grinding subassembly and pressure assembly, pressure assembly is used to provide the pressure between workpiece and skive, wherein pressure assembly includes level pressure component and transformation component, level pressure component can be to the offer constant pressure between workpiece and skive, transformation component can make it have the feature that structure is simple, cost reduces and control is easy, and then reach good ground effect to the offer extra pressure between workpiece and skive.
Description
Technical field
The present invention relates to grinding fields to be more particularly related to a kind of grinding mechanism.
Background technique
Grinding technique is always precision machined main method due to the remarkable advantages such as strong with working ability, precision is high,
Super hard abrasive tool is a large amount of using the development for greatly having pushed grinding technique in recent years.Super hard abrasive tool refers to diamond
Or cubic boron nitride abrasive materials CBN is abrasive material, with various different bonding agents, cohere into certain geometrical shape for being ground,
The tool of the work such as grinding, polishing.There is high hardness and wearability to make various hard crisp difficult processing for diamond and CBN abrasive material
The production efficiency and processing quality of material all have clear improvement, high-speed grinding technology, ultrahigh speed mill based on super hard abrasive tool
The representative that technology, high efficiency deep grinding technology, superfine grinding technology etc. are currently advanced grinding technique is cut, vapour is widely used in
The various fields such as vehicle manufacture, aerospace, precision component, optical instrument.
Superhard material, as the term suggests just refer to intensity hardness compared to the higher engineering material of traditional material.Traditional definition
Superhard material refer to HV be greater than 40GPa material, mainly include ceramics, diamond, artificial single crystal's diamond, carbon fiber,
The materials such as artificial single crystal, sapphire, polycrystalline diamond, cubic boron nitride, diamond-film-like, diamond thin.Superhard material is logical
Often with there is a physical and chemical performance for being much better than traditional material, including it is thermal stability, high rigidity, chemical inertness, corrosion-resistant and resistance to
Mill property etc..Excellent performance make superhard material have very extensive purposes, including aerospace, the energy, automobile, semiconductor,
The industrial fields such as photoelectron, household electrical appliances, new ceramics.
Superhard material difficulty of processing is big, at high cost, effect is poor, and leading to it, further application is restricted.Using traditional
When method for metal working is processed, since hard brittle material has the characteristics that inductile, fragility are destroyed, and high hardness material is frequent
Containing it is active can big alloying element, always exist that operating force is big, processing district temperature is high, processing efficiency is low, energy consumption is high, surface
The significant problems such as roughness is difficult to ensure, many design requirements cannot achieve.Since superhard material is because of it with excellent object
Physicochemical performance, achieves in various fields and is widely applied, but since its processing is more difficult, long-standing problem production,
Therefore the highly-efficient processing problem of hard brittle material in the urgent need to address, for this problem, needing one kind for superhard material is generation
The grinding mechanism of the hard alloy of table.
Summary of the invention
Therefore, in view of the shortcomings of the prior art, providing example of the invention to substantially solve since correlation is led
One or more problems caused by the limitation and disadvantage in domain, safety and reliability increase substantially, and effectively play guarantor
Protect the effect of equipment.
According to technical solution provided by the invention, the invention discloses grinding mechanism, grinding mechanism includes grinding subassembly, mill
Cutting component includes skive, and skive carries out grinding operation to workpiece；Grinding mechanism includes pressure assembly, pressure group
Part is used to provide the pressure between workpiece and skive；Wherein, pressure assembly includes level pressure component and transformation component, level pressure
Component can to the offer constant pressure between workpiece and skive, transformation component can to workpiece and skive it
Between offer extra pressure.
Further, level pressure component includes hydraulic bend pipe, is filled with liquid in hydraulic bend pipe, the exit of hydraulic bend pipe is set
There is lower sealing stopper rod, the inlet of hydraulic bend pipe is equipped with upper sealing stopper rod, and the end of lower sealing stopper rod is connected with workpiece, upper sealing
Lower clump weight is connected on stopper rod.
Further, transformation component includes driving motor, and driving motor is connected by drive shaft with retarder, retarder
It is connected with a cam on output shaft, roll shaft is combined on cam, the end of roll shaft is connected with connecting rod, and the end of connecting rod is connected with
Upper clump weight, upper clump weight are located at the surface of lower clump weight, and have amplitude distance between upper clump weight and lower clump weight.
Further, grinding subassembly further includes electrolytic dressing power supply, electrolytic dressing electrode, electrolytic grinding fluid, connects brush,
Electrolytic dressing power supply uses direct current high-frequency impulse mode, and electrolytic dressing electrode includes cathode, and electrolytic grinding fluid is sodium nitrite, nitre
Sour sodium, disodium hydrogen phosphate, sodium tetraborate, glycerine and tributyl phosphate mixed solution, connect brush be electrographite brush.
Further, hydraulic bend pipe is in 90 ° of distributions, upper sealing stopper rod and lower sealing stopper rod be equipped with rod piece and with rod piece one
The inner wall of body formed disk, disk and hydraulic bend pipe is fitted close, and is provided with firm fixture at the outer wall of hydraulic bend pipe, is consolidated
Fixture is used to clamp the outer wall of hydraulic bend pipe to stable hydraulic bend pipe.
Further, output shaft is equipped with damping wheel, and the material of upper clump weight and/or lower clump weight is metal or rubber.
Further, upper sealing stopper rod is removably connect with lower clump weight, and connecting rod is removably connect with upper clump weight.
Further, the soldering of boart boart wheel surface, which is coated with, reinforces alloy, and reinforcing alloy includes packing material, titanium
Belong to, reinforcing material, packing material, titanium, reinforcing material by ultrasonic oscillation instrument concussion mixing 30min, packing material by
72wt%Ag and 28wt%Cu composition, reinforcing material are the nano alumina particles or 5-10 μm of micrometer alumina of 40nm
Grain.
Further, wherein brazing temperature is 850 DEG C and keeps 5min, and 10−7It is carried out under the vacuum condition of Torr
Brazing operation.
Further, driving motor includes electric machine casing, and the side of electric machine casing is equipped with heat sink strip, the bottom of electric machine casing
It is connected with shockproof cushioning circle.
The present invention provides a kind of grinding mechanism, which includes grinding subassembly and pressure assembly, and pressure assembly is used
In providing the pressure between workpiece and skive, wherein pressure assembly includes level pressure component and transformation component, level pressure component
It can be between workpiece and skive to the offer constant pressure between workpiece and skive, transformation component
Extra pressure is provided, the feature that structure is simple, cost reduces and control is easy is made it have, and then reaches good grinding effect
Fruit.
Detailed description of the invention
Fig. 1 is contact schematic illustration of the invention.
Fig. 2 is grinding structural scheme of mechanism of the invention.
Fig. 3 is grinding effect schematic diagram of the invention.
Fig. 4 is that pressure size variation of the invention influences schematic diagram to grinding effect.
Fig. 5 is that amplitude distance change of the invention influences schematic diagram to grinding effect.
Fig. 6 is that frequency of impact variation of the invention influences schematic diagram to grinding effect.
Fig. 7 is the of the invention alloy microstructure schematic diagram for receiving aluminium oxide reinforcing agent.
Fig. 8 is the alloy microstructure schematic diagram of low-level oxidation aluminium reinforcing agent of the invention.
Fig. 9 is wetting effect schematic diagram of the invention.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.With reference to the accompanying drawing and specific embodiment to application principle of the invention make into
The description of one step.
Hard alloy is the method for passing through powder metallurgy by hard phase (hard compounds) and Binder Phase (generally metal)
A kind of alloy of manufactured superior performance is a kind of Particulate Reinforced Metal Matrix Composites.The hardness of its hard phase, chemistry are steady
Qualitative higher, red hardness is good；And Binder Phase good toughness, have both hard alloy intensity and hardness, while hard alloy also has
The advantages that corrosion-resistant, wear-resistant.
Hard alloy is had excellent performance, so in every field using very extensive；For example, hard alloy can should be in vehicle
Knife, milling cutter and drill etc. apply also for each core such as precision instrument, aerospace parts and also impact in component and engineering machinery
The biggish component of intensity, mold etc..
According to machining accuracy, grinding is divided into the modes such as plain grinding, accurate grinding, superfine grinding.Plain grinding processing
Precision reaches submicron order up to micron order, the machining accuracy of accurate grinding, and precision grinding machining precision is higher than micron order, even
Up to nanoscale.In fields such as precision instrument, aircraft industry, the required precision of hard alloy workpiece is higher.And hard alloy sheet
Body is hard brittle material, belongs to the scope of typical difficult-to-machine material, be to the precision machined major way of cemented carbide material
Accurate grinding and superfine grinding.
The hardness of cemented carbide material is relatively large, and the abrasive hardnesses such as corundum, silicon carbide are obviously insufficient, cannot function as grinding
The abrasive material of cemented carbide material is cut, so Pattern In Grinding Cemented Carbide especially superhard material constantly generallys use the biggish Buddha's warrior attendant of hardness
Stone sand wheel.According to bonding agent type difference, skive can there are many, which is not described herein again for specific type.
When skive and superhard material carry out grinding action, connecing between skive and superhard material workpiece
The cyclically-varying situation of touching is typical feature, this is also one of the index for measuring diamond wheel grinding effect.Mill
During cutting, abrasive grain will receive biggish impact and grinding force effect and abrasive grain loss occur, and the loss form of general abrasive grain can
To be divided into abrasive grain passivation, grain breakage and Grain Falling Off.If the stress acted on abrasive grain has been more than the intensity of abrasive grain itself,
The last branch of abrasive grain is fallen off from grinding wheel in the form of fragment, and grain breakage appropriate can update the abrasive grain of passivation, make
New grinding sword can constantly be generated and occur to be conducive to grinding process progress from sharp phenomenon by obtaining in grinding process.It is worth mentioning
It is that, although grinding sword can be updated from sharp by what bulk crushing generated, a large amount of abrasive grain volumes can be consumed, aggravate abrasion of grinding wheel, disliked
Change workpiece surface quality.Therefore, by the abrasive grain of micro- broken generation from it is sharp be that grinding process is desired, this degree be it is opposite and
Speech, therefore for the contact situation of skive and superhard material workpiece between the two with regard to extremely important.
Especially it is noted that the proposition of grinding wheel electrolytic in-process dressing technology ELID, solves the hard crisp material such as superhard material
The problems such as grinding force is big, grinding temperature is high, grinding efficiency is low, grinding wheel is easily passivated, blocks when material grinding, this technology go out
It is existing, grinding wheel dressing method is enriched, the scope of application of grinding has been widened, while also promoting superhard material application field
Expand.ELID technology is dissolution removal to occur when electrochemical reaction occurs according to the bonding agent of grinding wheel to realize its dressing purpose
, have many advantages, such as that structure is simple, shaping effect is good, controllability is strong, can be achieved under various grinding methods.
For the present invention, it is therefore an objective to more perfect raising grinding efficiency, that is, improve the gold of skive
Hard rock particle is to improve the validity that superhard material is ground process of lapping, specifically, by applying to boart boart wheel surface
The form of load executes the finishing of grinding wheel, and the present invention passes through the periodically additional shape for applying shock loading in grinding process
Formula, to ensure the contact situation between superhard workpiece material and wheel face, that is to say, that change superhard workpiece in process of lapping
Contact pressure between material and wheel face.
When grinding to superhard material, if applying the pressure of additional, diamond particles are from sharpening process
It is since being less than crystal grain projecting height value, therefore, greater number of crystal grain can be contacted with superhard material workpiece, therefore the period
The shock loading of the application additional of property will improve removal rate.The consumption and processing cost of skive are reduced simultaneously.
Fig. 1 gives the variation of the contact pressure of superhard material workpiece and boart boart wheel surface, it will be seen from figure 1 that
During time τ 1, superhard material workpiece is ground at constant pressure Pnconst, then, as soon as by applying an impact force,
It is that will apply extra pressure Pnadd to be applied to contact area, i.e. generation instantaneous pressure Pnhit；Then, during time τ 2, gold
Hard rock grinding wheel grinds superhard material with gross pressure Pntotal, and gross pressure herein comes from constant pressure and extra pressure
Combination, after continuing the corresponding time, remove extra pressure, and repeat whole process.
Fig. 2 gives the schematic diagram of present invention grinding mechanism.Available from Fig. 2, grinding subassembly includes skive
1, skive 1 carries out grinding operation to workpiece 2；Grinding mechanism includes pressure assembly, and pressure assembly is for providing workpiece 2 He
Pressure between skive 1；Wherein, pressure assembly includes level pressure component and transformation component, and level pressure component can be to workpiece 2
Offer constant pressure between skive 1, transformation component can be to the offer volumes between workpiece 2 and skive 1
External pressure.
Specifically, level pressure component includes hydraulic bend pipe 3, liquid, the exit of hydraulic bend pipe 3 are filled in hydraulic bend pipe 3
Equipped with lower sealing stopper rod 4, the inlet of hydraulic bend pipe 3 is equipped with upper sealing stopper rod 5, and the end of lower sealing stopper rod 4 is connected with workpiece
2, lower clump weight 6 is connected on upper sealing stopper rod 5, hydraulic bend pipe 3 is in 90 ° of distributions, and upper sealing stopper rod 5 and lower sealing stopper rod 4 are
Equipped with rod piece and with the integrally formed disk of rod piece, the inner wall of disk and hydraulic bend pipe 3 is fitted close.Pass through lower clump weight 6
Pressure effect, upper sealing stopper rod 5 generates extruding to the liquid in hydraulic bend pipe 3, and then generates active force to lower sealing stopper rod 4,
Under the action of lower sealing stopper rod 4, constant pressure Pnconst is generated in the contact area between skive 1 and workpiece 2.
In addition, the stability for operation considers, it is provided with firm fixture at the outer wall of hydraulic bend pipe 3, fixture is consolidated and uses
In the outer wall for clamping hydraulic bend pipe 3 to stable hydraulic bend pipe.
Transformation component includes driving motor 7, and driving motor 7 is connected by drive shaft 8 with retarder 9, the output of retarder 9
It is connected with a cam 10 on axis, roll shaft 11 is combined on cam 10, the end of roll shaft 11 is connected with connecting rod 12, the end of connecting rod 12
Portion is connected with clump weight 13, and upper clump weight 13 is located at the surface of lower clump weight 6, and upper clump weight 13 and lower clump weight 6
Between have amplitude distance.For upper clump weight 13 for generating extra pressure Pnadd, cam 10 can be in driving motor 7, retarder
It is driven under 9 collective effect, in 10 rotation process of cam, roll shaft 11, connecting rod 12, the upper clump weight 13 cooperated with cam 10 is followed
Movement, when being promoted to highest position and moving downward, upper clump weight 13 can move downward and generate collision with lower clump weight 6
Impact.For entirety, in the improvement stage of upper clump weight 13, i.e., in 1 stage of τ that upper clump weight 13 is not contacted with lower clump weight 6, surpass
Hard material workpiece is contacted with skive with constant pressure Pnconst, when upper clump weight 13 be promoted at extreme higher position with
When certain acceleration moves downward, upper clump weight 13 can reach lower clump weight 6, and upper clump weight 13 and lower clump weight 6 generate wink
When surge Pnhit, the characteristics of due to cam itself, upper 13 meeting of clump weight and lower 6 continuous contact of clump weight for a period of time, i.e.,
Extra pressure Pnadd is applied to contact area, therefore in 2 stage of time τ, superhard material workpiece is at gross pressure Pntotal
It is ground, combination of the gross pressure Pntotal herein from constant pressure Pnconst and extra pressure Pnadd, later, on
Clump weight 13 can be elevated, and be repeated the above process.
Additional load percussion main purpose is to generate milling zone condition, allows that the micro- of diamond particles is activated to destroy
Journey prevents from forming abrasive plane on diamond particles and substantially reduces the time existing for abrasive plane, can choose counterweight
The height amplitude that the weight of block 13 and upper clump weight 13 decline contacts come clump weight 13 upper when adjusting impact process with lower clump weight 6
Pressure between region.Moreover, upper sealing stopper rod 5 is removably connect with lower clump weight 6, connecting rod 12 and upper clump weight 13 are removable
The connection unloaded can be selected according to the demand of actual condition using the clump weight that match, in addition upper clump weight 13 and/or under match
The material of pouring weight 6 can be metal or rubber.
In order to further verify the validity of the technical solution, first in superhard material workpiece and skive contact zone
In domain apply constant pressure Pnconst=70N(Pnadd=0) working condition under ground, then in constant pressure
Pnconst=100N(Pnadd=0) working condition under ground, finally in constant pressure Pnconst=30N, Pnadd=40N
It is ground under the working condition of (Pntotal=70N).As can be seen that applying extra pressure i.e. in constant pressure from attached drawing 3
Pnconst=30N, the column Pnadd=40N(Fig. 3 c) operating condition under, compared on the column Pnconst=70N(Fig. 3 a), Pnconst=100N
The grinding effect of the constant pressure on (column Fig. 3 b) is compared, and 1.8 times and 1.3 times have been respectively increased in removal rate Q, diamond particles
Consumption q reduces 1.9 times and 1.2 times respectively, and comprehensive process cost K reduces 2 times and 1.2 times respectively.The result shows that transformation work
Skill can be effectively used for grinding superhard material workpiece.
For extra pressure Pnadd, major parameter is pressure size Fadd, amplitude distance A, frequency of impact f, this three
A parameter determines the impact strength to grinding wheel diamond particles.
Attached drawing 4 is influence of the pressure size Fadd situation of change to grinding situation, and pressure size Fadd is increased to from 0
100N, removal rate Q are from 1.5mm3/ min increases to 10.5mm3/ min increases 7 times, while the consumption of grinding wheel diamond particles
Q is from 45mg/mm3It is reduced to 9mg/mm3, reduce 5 times, 7 times about reduced for comprehensive process cost K.
Attached drawing 5 is influence of the amplitude distance A situation of change to grinding situation, can clearly be found out from attached drawing 5, amplitude distance
A situation of change and pressure size Fadd situation of change have approximate effect to superhard workpiece grinding situation.
Attached drawing 6 is influence of the frequency of impact f situation of change to grinding situation, and the control for frequency of impact f can pass through
The cooperation of motor speed and retarder transmission ratio is completed, and which is not described herein again.From attached drawing as can be seen that frequency of impact f increases from 0
It is added to 10 times/s, removal rate Q is from 1.5mm3/ min increases to 12.7mm3/ min, at the same the consumption q of grinding wheel diamond particles and
Comprehensive process cost K about reduces 10 times.
Therefore, the variation of additional load parameter can increase the consumption of removal rate and diamond particles and reduce it is comprehensive at
This, has significant raising to ground effect.
The electrolytically generated oxidation film of pulse dc power is compared with the homogeneous densification of oxidation film that DC electrolysis generates.Pulse is straight
There are one galvanic electricity sources significant advantage is that adjustment parameter is more, and may be implemented the case where not reducing oxidation film formation speed
Under, cell reaction frequency is purposefully adjusted, the surface damage of grinding wheel is prevented, while adjusting the thickness that wheel face generates oxidation film
Degree.For the present invention, ELID grinding is the most suitable using high frequency pulse positive pole, and high-frequency pulse current is different
In DC current, in the grinding of grinding wheel On-line electrolytic dissolution, the continuous arcing without any damaging, which discharges, occurs, while again using number
Value controls to keep stable electrolysis state.
The bonding agent of super-abrasive grinding wheel mainly has resinoid bond, vitrified bond, metallic bond and plating metal
Four seed type of bonding agent.But ELID grinding is that bonding agent must be conductive to the basic demand of grinding wheel, so of the invention
Select metal anchoring agent diamond wheel.
In ELID grinding process, the effect of oxidation film is very crucial.The solution of one side grinding wheel metallic bond makes absolutely
Edge oxidation film constantly thickens, and another aspect workpiece again constantly strikes off oxidation film, to make oxide thickness constantly change, most
It the generation of whole oxidation film and strikes off and reaches dynamic equilibrium.And electrolyte, antirust agent, coolant, polar additive in grinding fluid
The selection of equal ingredients and proportion generate speed, adsorption strength, hardness, the thickness of oxidation film to the electrolysis ability and grinding wheel of grinding fluid
Degree, compactness, insulating properties or even final ground effect also have an important influence.So the composition proportion of grinding fluid becomes ELID
One of key technology in grinding.
For metal anchoring agent diamond wheel, the present invention selects following several substances as the main of ELID grinding fluid
Ingredient: sodium nitrite, sodium nitrate, disodium hydrogen phosphate, sodium tetraborate, glycerine, tributyl phosphate.Wherein, sodium nitrite and nitre
Main electrolyte of the sour sodium as grinding fluid, enhances the conductive capability of grinding fluid, while their conducts together with disodium hydrogen phosphate
Inorganic salts are very effective to the air film for destroying workpiece surface, can improve the cooling of grinding fluid；And sodium nitrite and sodium tetraborate are also
Iron can be made to generate strict passivating film and prevent the corrosion of oxygen or other active ions to lathe, there is good rustless property；Third
Triol improves infiltration and the cleaning ability of grinding fluid as surfactant；Tributyl phosphate can be improved as EP agent
The greasy property of grinding fluid.In order to make grinding fluid be well positioned to meet the requirement of high-speed grinding, high speed water-based milling liquid is selected to make
For base fluid.
For skive, effectively hold, in use, plating and sintered gold since bonding agent lacks abrasive grain
The abrasive grain of hard rock tool is easy to fall off, and causes tool premature failure, and the advantage of diamond fails to give full play to.It is brazed Buddha's warrior attendant lapicide
Have the enhanced primary treatment so as to brazing process diamond and solder, greatly improves the holding power of abrasive grain, therefore the present invention exists
Solder layer uneven thickness, heating temperature are unevenly distributed and basis the problems such as solder flows when solving fine-granularity diamond soldering
On, the preparation of fine granularity soldering skive is completed using high-frequency induction brazing method.
Specifically, boart boart wheel surface soldering be coated with reinforce alloy, reinforce alloy include packing material, titanium,
Reinforcing material, packing material, titanium, reinforcing material by ultrasonic oscillation instrument concussion mixing 30min, packing material by
72wt%Ag and 28wt%Cu composition, the nano alumina particles (be known as receive aluminium oxide reinforcing agent) or 5- that reinforcing material is 40nm
10 μm of micrometer alumina particle (referred to as low-level oxidation aluminium reinforcing agent), wherein brazing temperature is 850 DEG C and keeps 5min, and
10−7Brazing operation is carried out under the vacuum condition of Torr.
In order to improve the wearability of skive, into the packing material of 72wt%Ag and 28wt%Cu, addition is received respectively
Aluminium oxide reinforcing agent, low-level oxidation aluminium reinforcing agent, wherein it is equal to receive aluminium oxide reinforcing agent, the weight percent of low-level oxidation aluminium reinforcing agent
It can be two kinds of components of 1wt% and 2wt%.It is reacted completely in order to ensure active element titanium will not be oxidized alumina particles, to filling
The titanium of 5wt% is added in material.Mixed composition is heated to 850 DEG C, measures and contains 1wt%, 2wt% respectively
The hardness number of the enhancing alloy of the strong agent of aluminium oxide of receiving is respectively 152.5 ± 5HV and 123.8 ± 10HV, respectively containing 1wt%,
The hardness of the enhancing alloy of the strong agent of 2wt% low-level oxidation aluminium is respectively 155.1 ± 7HV and 139.1 ± 7HV, it may be noted that these
It is worth the hardness of significant 93.5 ± 10HV higher than 72Ag28Cu alloy.Fig. 7 a shows that addition 1wt%'s receives aluminium oxide reinforcing agent
The filling alloy microstructure generated afterwards, Fig. 7 b show the filling alloy generated after aluminium oxide reinforcing agent of receiving of addition 2wt%
Microstructure, Fig. 8 a show that the filling alloy microstructure generated after the low-level oxidation aluminium reinforcing agent for adding 1wt%, Fig. 8 b are shown
The filling alloy microstructure generated after the low-level oxidation aluminium reinforcing agent of addition 2wt%.
For diamond brazing, due to having very high interface energy between diamond and common metal and its alloy, cause
Keep the solderability of diamond very poor.But active element can reduce the interface energy of diamond surface, and Ti belongs to magnesium-yttrium-transition metal member
Element, it has a degree of wetability to diamond.Its reason be that the Ti in solder to diamond surface spread and
The surface of diamond is reacted with the C in diamond generates carbide TiC, so that wetting and soldering of the liquid cored solder to diamond
Become wetting and soldering of the liquid cored solder to TiC, is finally reached the pricker between diamond and matrix with certain bond strength
Welding link.Fig. 9 a shows that the wettability of addition 1wt% received after aluminium oxide reinforcing agent, Fig. 9 b show addition 2wt%'s
Receive the wettability after aluminium oxide reinforcing agent, Fig. 9 c shows the wettability after the low-level oxidation aluminium reinforcing agent of addition 1wt%, figure
9d shows the wettability after the low-level oxidation aluminium reinforcing agent of addition 2wt%, all shows to the good profit of diamond surface
It is moist.
Therefore, in general, grinding mechanism according to the present invention has excellent grinding effect, specifically uses step
It is as follows:
A. the lower clump weight of required weight and size is connected on upper sealing stopper rod, is acted on by the pressure of lower clump weight, on
It seals stopper rod and extruding is generated to the liquid in hydraulic bend pipe, and then active force is generated to lower sealing stopper rod, in lower sealing stopper rod
Under effect, constant pressure is generated in the contact area between skive and workpiece；
B. the upper clump weight of required weight and size is connected on connecting rod, in adjustment between clump weight and lower clump weight away from
From so that the two has required amplitude distance；
C. start skive, so that the contact area of skive and workpiece is ground under the action of constant pressure
Operation；
D. start driving motor and adjust to suitable revolving speed, driving motor drives retarder to operate by drive shaft, so that convex
Work is taken turns, so that upper clump weight follows movement；
E. when upper clump weight, which is promoted to highest position, to be moved downward, upper clump weight can reach lower clump weight, upper clump weight
Temporary impact pressure is generated with lower clump weight, and extra pressure is applied to the contact area of skive and workpiece, Buddha's warrior attendant
The contact area of stone sand wheel and workpiece carries out grinding operation under the action of gross pressure, wherein gross pressure is constant pressure and volume
The combination of external pressure；
F. farther cam movement, so that upper clump weight can be elevated to descend clump weight to disengaging, the one of skive and workpiece
A milling cycle terminates, to open next milling cycle.
For those skilled in the art, it is clear that invention is not limited to the details of the above exemplary embodiments, and is not carrying on the back
In the case where from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter from which
From the point of view of a bit, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is wanted by appended right
Ask rather than above description limit, it is intended that by all changes that come within the meaning and range of equivalency of the claims
It is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of grinding mechanism, the grinding mechanism includes grinding subassembly, and the grinding subassembly includes skive
(1), the skive (1) carries out grinding operation to workpiece (2)；It is characterized in that, the grinding mechanism includes pressure
Power component, the pressure between the workpiece (2) that the pressure assembly is used to provide the described and the skive (1)；Its
In, the pressure assembly includes level pressure component and transformation component, and the level pressure component can be to the workpiece (2) and institute
The offer constant pressure between skive (1) stated, the transformation component can be to the workpiece (2) and described
Offer extra pressure between skive (1).
2. a kind of grinding mechanism according to claim 1, which is characterized in that the level pressure component includes hydraulic bend pipe
(3), liquid is filled in the hydraulic bend pipe (3), the exit of the hydraulic bend pipe (3) is equipped with lower sealing stopper rod (4),
The inlet of the hydraulic bend pipe (3) is equipped with upper sealing stopper rod (5), and the end connection of the lower sealing stopper rod (4) is
The workpiece (2) stated is connected with lower clump weight (6) on the upper sealing stopper rod (5).
3. a kind of grinding mechanism according to claim 1, which is characterized in that the transformation component includes driving motor
(7), the driving motor (7) is connected by drive shaft (8) with retarder (9), is connected on the output shaft of the retarder (9)
It is connected to a cam (10), is combined with roll shaft (11) on the cam (10), the end of the roll shaft (11) is connected with
Bar (12), the end of the connecting rod (12) are connected with clump weight (13), the upper clump weight (13) be located at it is described under
The surface of clump weight (6), and there is amplitude distance between the upper clump weight (13) and the lower clump weight (6).
4. a kind of grinding mechanism according to claim 1, which is characterized in that the grinding subassembly further includes electrolytic dressing
Power supply, electrolytic grinding fluid, connects brush at electrolytic dressing electrode, and the electrolytic dressing power supply uses direct current high-frequency impulse mode,
The electrolytic dressing electrode includes cathode, and the electrolytic grinding fluid is sodium nitrite, sodium nitrate, disodium hydrogen phosphate, four boron
The mixed solution of sour sodium, glycerine and tributyl phosphate, the brush that connects is electrographite brush.
5. a kind of grinding mechanism according to claim 1, which is characterized in that the hydraulic bend pipe (3) is distributed in 90 °,
The upper sealing stopper rod (5) and the lower sealing stopper rod (4) be equipped with rod piece and with the integrally formed disk of rod piece, it is described
Disk and the inner wall of the hydraulic bend pipe (3) be fitted close, be provided with firm folder at the outer wall of the hydraulic bend pipe (3)
Tool, the firm fixture are used to clamp the outer wall of the hydraulic bend pipe (3) to stablize the hydraulic bend pipe (3).
6. a kind of grinding mechanism according to claim 1, which is characterized in that the output shaft is equipped with damping wheel, institute
The material of the upper clump weight (13) and/or lower clump weight (6) stated is metal or rubber.
7. a kind of grinding mechanism according to claim 1, which is characterized in that skive (1) the surface soldering
Coated with alloy is reinforced, the reinforcement alloy includes packing material, titanium, reinforcing material, the packing material, titanium
Category, reinforcing material are by ultrasonic oscillation instrument concussion mixing 30min, and the packing material is by 72wt%Ag and 28wt%Cu group
At the reinforcing material is the nano alumina particles or 5-10 μm of micrometer alumina particle of 40nm, wherein brazing temperature
For 850 DEG C and 5min is kept, and 10−7Brazing operation is carried out under the vacuum condition of Torr.
8. a kind of grinding mechanism according to claim 1, which is characterized in that the upper sealing stopper rod (5) and described
Lower clump weight (6) removably connects, and the connecting rod (12) is removably connect with the upper clump weight (13).
9. a kind of grinding mechanism according to claim 1, which is characterized in that the driving motor (7) includes motor casing
The side of body, the electric machine casing is equipped with heat sink strip, and the bottom of the electric machine casing is connected with shockproof cushioning circle.
10. a kind of application method for grinding mechanism, the grinding mechanism is grinder described in any one of claim 1-9
Structure, which is characterized in that steps are as follows for the use of the grinding mechanism:
A. the lower clump weight of required weight and size is connected on upper sealing stopper rod, is acted on by the pressure of lower clump weight, on
It seals stopper rod and extruding is generated to the liquid in hydraulic bend pipe, and then active force is generated to lower sealing stopper rod, in lower sealing stopper rod
Under effect, constant pressure is generated in the contact area between skive and workpiece；
B. the upper clump weight of required weight and size is connected on connecting rod, in adjustment between clump weight and lower clump weight away from
From so that the two has required amplitude distance；
C. start skive, so that the contact area of skive and workpiece is ground under the action of constant pressure
Operation；
D. start driving motor and adjust to suitable revolving speed, driving motor drives retarder to operate by drive shaft, so that convex
Work is taken turns, so that upper clump weight follows movement；
E. when upper clump weight, which is promoted to highest position, to be moved downward, upper clump weight can reach lower clump weight, upper clump weight
Temporary impact pressure is generated with lower clump weight, and extra pressure is applied to the contact area of skive and workpiece, Buddha's warrior attendant
The contact area of stone sand wheel and workpiece carries out grinding operation under the action of gross pressure, wherein gross pressure is constant pressure and volume
The combination of external pressure；
F. farther cam movement, so that upper clump weight can be elevated to descend clump weight to disengaging, the one of skive and workpiece
A milling cycle terminates, to open next milling cycle.
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| CN201910804213.2A CN110450043B (en) | 2019-08-28 | 2019-08-28 | Grinding mechanism and using method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959142A (en) * | 2021-03-08 | 2021-06-15 | 长沙理工大学 | Online dressing method of superhard grinding wheel |
| CN112975662A (en) * | 2021-03-08 | 2021-06-18 | 长沙理工大学 | Online trimming device for superhard grinding wheel |
| CN114309809A (en) * | 2021-08-05 | 2022-04-12 | 安徽圣尔沃智能装备有限公司 | Profile modeling chamfer burring is equipped |
| CN114750036A (en) * | 2022-05-12 | 2022-07-15 | 河南东进精密工具有限公司 | Grinding system with multi-purpose ball screw diamond gyro wheel |
| CN115847198A (en) * | 2023-02-28 | 2023-03-28 | 山东硅元新型材料股份有限公司 | Inner cavity machining method of square, hollow and open ultraprecise ceramic guide rail |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222430A (en) * | 1997-11-05 | 1999-07-14 | 阿普莱克斯公司 | Polishing tool having sealed fluid chamber for support of polishing pad |
| WO2004007145A1 (en) * | 2002-07-17 | 2004-01-22 | Erwin Junker Maschinenfabrik Gmbh | Method and device for grinding a rotating roller using an elastic steady-rest support |
| CN1505110A (en) * | 2002-12-04 | 2004-06-16 | ���µ�����ҵ��ʽ���� | Chemical mechanical polishing method and apparatus |
| CN101722474A (en) * | 2009-12-24 | 2010-06-09 | 天津大学 | Control device and method of electrolytic current in grinding process of ELID |
| CN204277687U (en) * | 2014-12-01 | 2015-04-22 | 武钢集团昆明钢铁股份有限公司 | A kind of constant pressure type reinforcing bar weld seam grinding attachment |
| CN205465669U (en) * | 2016-04-01 | 2016-08-17 | 上海关勒铭有限公司 | Adopt spring pressure cam lifting height's precious stone face lapping mill |
| CN108481132A (en) * | 2018-04-16 | 2018-09-04 | 福州大学 | A kind of constant pressure grinding device |
-
2019
- 2019-08-28 CN CN201910804213.2A patent/CN110450043B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222430A (en) * | 1997-11-05 | 1999-07-14 | 阿普莱克斯公司 | Polishing tool having sealed fluid chamber for support of polishing pad |
| WO2004007145A1 (en) * | 2002-07-17 | 2004-01-22 | Erwin Junker Maschinenfabrik Gmbh | Method and device for grinding a rotating roller using an elastic steady-rest support |
| CN1505110A (en) * | 2002-12-04 | 2004-06-16 | ���µ�����ҵ��ʽ���� | Chemical mechanical polishing method and apparatus |
| CN101722474A (en) * | 2009-12-24 | 2010-06-09 | 天津大学 | Control device and method of electrolytic current in grinding process of ELID |
| CN204277687U (en) * | 2014-12-01 | 2015-04-22 | 武钢集团昆明钢铁股份有限公司 | A kind of constant pressure type reinforcing bar weld seam grinding attachment |
| CN205465669U (en) * | 2016-04-01 | 2016-08-17 | 上海关勒铭有限公司 | Adopt spring pressure cam lifting height's precious stone face lapping mill |
| CN108481132A (en) * | 2018-04-16 | 2018-09-04 | 福州大学 | A kind of constant pressure grinding device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959142A (en) * | 2021-03-08 | 2021-06-15 | 长沙理工大学 | Online dressing method of superhard grinding wheel |
| CN112975662A (en) * | 2021-03-08 | 2021-06-18 | 长沙理工大学 | Online trimming device for superhard grinding wheel |
| CN114309809A (en) * | 2021-08-05 | 2022-04-12 | 安徽圣尔沃智能装备有限公司 | Profile modeling chamfer burring is equipped |
| CN114750036A (en) * | 2022-05-12 | 2022-07-15 | 河南东进精密工具有限公司 | Grinding system with multi-purpose ball screw diamond gyro wheel |
| CN114750036B (en) * | 2022-05-12 | 2023-04-25 | 河南东进精密工具有限公司 | Grinding system with multi-purpose ball screw diamond roller |
| CN115847198A (en) * | 2023-02-28 | 2023-03-28 | 山东硅元新型材料股份有限公司 | Inner cavity machining method of square, hollow and open ultraprecise ceramic guide rail |
| CN115847198B (en) * | 2023-02-28 | 2023-05-26 | 山东硅元新型材料股份有限公司 | Method for machining inner cavity of square, hollow and open ultraprecise ceramic guide rail |
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| CN110450043B (en) | 2020-07-17 |
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Effective date of registration: 20200616 Address after: No.1328, Hewu Road, Wuxiao Town, Chongming District, Shanghai 202150 Applicant after: Shanghai Yuezhou Machinery Manufacturing Co., Ltd Address before: 215163 Room 601, 7 building, 78 Ling Ling Road, hi tech Zone, Suzhou, Jiangsu. Applicant before: SUZHOU CHENSHENGYOU ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. |
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