CN106029298A - Dry barrel polishing method, and medium production method - Google Patents
Dry barrel polishing method, and medium production method Download PDFInfo
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- CN106029298A CN106029298A CN201580010935.0A CN201580010935A CN106029298A CN 106029298 A CN106029298 A CN 106029298A CN 201580010935 A CN201580010935 A CN 201580010935A CN 106029298 A CN106029298 A CN 106029298A
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- medium
- lubricity
- machined object
- mass
- dry type
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Classifications
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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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
-
- 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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
In a first step, the surface of a polishing medium (40) is coated with a lubrication-property-imparting material (44) to form a non-wetting coating (44C) and impart lubrication properties to the surface of the medium (40). In a second step, the medium (40) and workpieces (W) are mixed inside a barrel vessel (12). In a third step, the medium (40) and the workpieces (W) are made to circulate inside the barrel vessel (12) to polish the workpieces (W).
Description
Technical field
One aspect of the present invention and embodiment relate to dry type cylinder polishing and are applicable to the method
The manufacture method of medium.
Background technology
It is known to such as bottom roll Ginding process: grind dress by machined object and medium are loaded cylinder
The grinding groove put is interior and makes they mixed flow, utilizes medium to grind the surface of machined object
Mill (for example, referring to patent documentation 1).The existence of such cylinder Ginding process adds water in grinding groove
Wet type drum Ginding process and the dry type cylinder Ginding process that do not adds water in grinding groove.?
This, although Wet type drum Ginding process is due to the lucigenin processing of machined object or putting down of machined object
So purpose such as spermatorrhea processing and be widely used, but exist and need after grinding to carry out at waste water
The problem of reason.Accordingly, there exist the situation using dry type cylinder Ginding process.
Patent documentation 1: Japanese Patent Publication 44-23873 publication
But, in dry type cylinder Ginding process, it is difficult to ensure that equal with Wet type drum Ginding process or
Close polish performance.
Summary of the invention
The purpose of one aspect of the present invention is, it is thus achieved that in surface roughness or the adjustment etc. of shape
In be able to ensure that the dry type cylinder of the polish performance equal or close with Wet type drum Ginding process
Ginding process and be applicable to the manufacture method of medium of the method.
Dry type cylinder Ginding process involved by one aspect of the present invention in the way of dry type to quilt
Machining object carries out cylinder grinding, wherein, has: the first operation, in this first operation, passes through
The surface coating lubricity of the medium used in grinding above-mentioned cylinder gives material and is formed non-
Moistening coated portion, gives lubricity to the surface of above-mentioned medium；Second operation, in this second work
In sequence, above-mentioned medium is made to mix in grinding groove with machined object；And, the 3rd operation, at this
In 3rd operation, next right by making above-mentioned medium and above-mentioned machined object flow in above-mentioned grinding groove
Above-mentioned machined object is ground.
According to said structure, (sliding to the mobility improving medium owing to utilizing lubricity to give material
Dynamic performance), therefore, it is possible to the surface grinding of machined object is obtained the most coarse by suppression medium, thus
The surface of machined object is processed into smooth abradant surface.Non-wetting described herein refers to medium
Surface is because of oils and fats etc. and nonwetting state.Additionally, one aspect of the present invention includes independently
Carry out above-mentioned first operation, the second operation and the situation of the 3rd operation and carry out at least two simultaneously
The situation both of individual above operation.
In one embodiment, it is also possible to be configured to, in above-mentioned 3rd operation, to above-mentioned
Supply above-mentioned lubricity in grinding groove and give material while making above-mentioned medium and above-mentioned processed logistics
Dynamic.
According to said structure, even if lubricity gives material from medium because of the collision with machined object
On gradually cut, the surface of medium also is able to utilize the lubricity being newly supplied to give material and is coated with
Apply.Therefore, the effect that the surface of suppression machined object is the most coarse can continue.Additionally, be also intended to
Material is given to machined object coating lubricity.But, due to coated front or the most coated quilt
The surface of machining object is by medium milling, and therefore the surface of machined object is gradually ground.
In one embodiment, above-mentioned lubricity gives material can also contain fatty acid or fatty acid
Salt.
According to said structure, contain fatty acid or soap, therefore owing to lubricity gives material
It is capable of low cost and gives lubricity to the surface of medium.Particularly at fatty acid or fat
Containing in the case of sodium soap in hydrochlorate, it is possible to give good lubricity with low cost.It addition,
In the case of sodium soap gives the main component of material as lubricity, due on machined object
Adhere to oils and fats hardly, therefore, it is possible to clean operation without clean operation or simplification.
In one embodiment, it is also possible to be configured to, above-mentioned medium is the medium of inanimate matter, upper
The surface configuration giving an account of matter has for the imparting material entrance of above-mentioned lubricity and gives above-mentioned lubricity
Material carries out the maintaining part kept.
The medium (burning till medium, sintered medium) of inanimate matter and organic medium (resin medium)
Compare cheap.But, due to the medium of inanimate matter, lubricity is relatively compared with organic medium
Low, therefore the impulsive force for machined object is higher.Result, it is impossible to obtain grinding with Wet type drum
The equal grinding precision of situation.Here, according to said structure, owing to medium possesses confession on surface
Lubricity gives the maintaining part that material enters and keeps it, and therefore lubricity gives material phase
Adhesion enhancement for medium.Thus, compared with the situation not possessing maintaining part, it is possible to longer
The lasting the most coarse effect suppressed in surface to machined object for a long time.
In one embodiment, above-mentioned maintaining part can also become porous plastid by making above-mentioned medium
And formed.
Structured as described above, if making medium is Porous, the proportion step-down of medium, therefore medium
Decline relative to the impulsive force of machined object.It is as a result, it is possible to suppress the surface of machined object excessively
Coarse.Therefore, given the synergy of the effect of material and the effect of Porous by lubricity,
It is able to ensure that the polish performance equal or close with Wet type drum Ginding process.Additionally, above-mentioned
Porous medium in the form of bubble can also be separated foam structure or continuous air bubbles structure
Any one in making.
In one embodiment, above-mentioned medium can also be the oxidation at least containing 60～80 mass %
Aluminum (Al2O3), 10～30 silicon dioxide (SiO of mass %2), 4～8 zirconium oxides of mass %
(ZrO2), 1～3 mass % calcium oxide (CaO) and the magnesium oxide (MgO) of 1～4 mass %
Sintered body.
The medium of Porous produces crack etc. with pore for basic point in cylinder grinds, thus and non-multi
The medium phase specific strength of hole matter is relatively low.In said structure, by the oxidation containing 1～4 mass %
Magnesium, it is possible to prevent the intensity as medium is overall from excessively declining.Further, since the medium of this structure
It is sintered medium, therefore lasts a long time compared with burning till medium.
The system of the medium that the dry type cylinder Ginding process involved by another aspect of the present invention is used
The method of making is the method for manufacturing above-mentioned medium, including: mixing operation, in this mixing operation,
Abrasive grains, binding agent, magnesium oxide and disappearing material powder are mixed；Molding procedure,
In this molding procedure, homomixture obtained by mixing in above-mentioned mixing operation is shaped to regulation
Shape；And sintering circuit, in this sintering circuit, to mold in above-mentioned molding procedure
Molded body is sintered and forms sintered body, and makes above-mentioned disappearing material powder disappear, above-mentioned
The surface of sintered body forms above-mentioned maintaining part.It addition, by above-mentioned abrasive grains, above-mentioned binding agent,
In the case of the total of above-mentioned magnesium oxide and above-mentioned disappearing material powder is set to 100 mass %, on
The addition stating disappearing material powder is the amount of 1～40 mass %.
By making medium be integrally formed into Porous according to said structure, it is possible to be obtained by pore and exist
Surface is formed with the medium of the sintered body of maintaining part.In addition it is also possible in mixing operation, according to
Need and add water.
In one embodiment, above-mentioned disappearing material powder can also be aluminium-hydroxide powder.
According to said structure, aluminium hydroxide is kinetics in sintering circuit.Its result, hydroxide
Aluminum is converted into aluminium oxide and reduces as solids thus volume, and hydroxy become steam and
Volatilization.Owing to aluminium-hydroxide powder is scattered in molded body, so being formed many in above-mentioned sintering circuit
Hole plastid.
In one embodiment, it is also possible to be configured to, in above-mentioned mixing operation, above-mentioned grinding
The mixing material that abrasive particle, above-mentioned binding agent, above-mentioned magnesium oxide and above-mentioned disappearing material powder are constituted
Material adds manganese oxide (MnO) and ferrum oxide (Fe2O3At least one in), by above-mentioned
Mixing material and added this at least one (that is, appoint in the addition of manganese oxide and ferrum oxide
It is one of which in the case of meaning one, in the case of with the addition of manganese oxide and ferrum oxide both
Both) total be set to 100 mass % in the case of, this at least one (that is, adding
Manganese oxide and ferrum oxide are one of which in the case of any one, with the addition of manganese oxide and
Both in the case of ferrum oxide both) content be below 5 mass %.
According to said structure, in sintering circuit, added this at least one as sintering aid
And effectively play a role.
As it has been described above, according to the various aspects of the present invention, have and be able to ensure that and Wet type drum grinding
The effect of polish this excellence of performance that method is equal or close.
Accompanying drawing explanation
Fig. 1 is the dry type illustrating and being applicable to the dry type cylinder Ginding process involved by an embodiment
The schematic configuration diagram of cylinder lapping device.
Fig. 2 is the sectional view face side of medium being amplified and schematically showing.
Fig. 3 is the analysis result of the surface coating lubricity imparting material being shown in medium.Fig. 3 (A)
Illustrate that the result of spectrum analysis, Fig. 3 (B) illustrate the result of surface analysis.
Detailed description of the invention
The manufacture method of the dry type cylinder Ginding process involved by present embodiment and medium is carried out
Explanation.Fig. 1 is shown the dry type being applicable to involved by present embodiment by schematic configuration diagram
The dry type cylinder lapping device 10 of cylinder Ginding process.First, to this dry type cylinder lapping device
10 summarize.
(structure of dry type cylinder lapping device)
Dry type cylinder lapping device 10 is (hereinafter simply referred to as " cylinder lapping device 10 ".) possess
Roller trough 12 as grinding groove.Roller trough 12 is formed as container-like and is fixed on base (omitting
Diagram).Inner surface in roller trough 12 is fixed with liner 14.Load in this roller trough 12 and grind
The medium 40 of mill and machined object W etc. (they are referred to as " blocks ").Additionally,
Figure schematically shows medium 40 and machined object W.
One end of sweep-up pipe 20 links with the bottom of roller trough 12.The other end of sweep-up pipe 20 with
The sucting side of vacuum cleaner 16 links.Vacuum cleaner 16 possesses the air in suction sweep-up pipe 20
Fan (omit diagram) and for the filter (omit and illustrate) not making dust discharge.
At the upper side of roller trough 12, configuration dust shield 18 as desired.Sweep-up pipe 20A's
One end links with dust shield 18.The other end of sweep-up pipe 20A is connected with the other end of sweep-up pipe 20.
On the other hand, the upper base surface side in roller trough 12 is configured with rotating disk 22.Rotating disk 22 with
Its central part is fixed on rotary shaft 24 as axle installation portion.It addition, in the bottom of roller trough 12
It is provided with bearing portion 26.It is fixed on the rotary shaft 24 of rotating disk 22 to rotate the earth's axis and be supported on cylinder
The bearing portion 26 of groove 12.Further, the lower end of rotary shaft 24 is in the bottom part down side of roller trough 12
It is connected with driving force transmission mechanism 28.
Driving force transmission mechanism 28 include a pair pulley 30,32 and be hung on a pair pulley 30,
The V-type band 34 of 32.Above-mentioned rotary shaft 24 is coaxially fixable to the axle center part of a pulley 30.
It addition, the output shaft of the motor 36 of band reductor is coaxially fixable to the axle center of another pulley 32
Portion.
As it has been described above, cylinder lapping device 10 is by utilizing the driving of motor 36 to make rotating disk 22 revolve
Turn, make blocks flow in roller trough 12.Such cylinder lapping mode is referred to as flowing
Formula cylinder.
(medium)
It follows that the medium 40 being loaded into roller trough 12 is summarized.Medium 40 is basis
The purpose ground and spherical, the triangle capitate from several millimeters to tens millimeters that becomes, triangular prism shaped,
The little granule of the arbitrary shapes such as the shape of cutting cylinder cylindrical, oblique or four prism type
Body.As an example, the medium 40 of present embodiment is the triangular prism shape of height 6mm.
Medium 40 together flows with machined object W in roller trough 12, utilize medium 40 with added
Machined object W is ground by the frictional force produced between work thing W.
Fig. 2 shows the schematic sectional view face side of medium 40 expanded.Fig. 2 institute
The grinding medium 40 shown is the medium of inanimate matter.As the medium of inanimate matter, such as, can arrange
Enumerate the medium of molding to mixing abrasive grains and clay product burn till obtained by burn till
The medium (burning till medium) of body and the medium of sintered body formed by the sintering of abrasive grains
(sintered medium).It is said that in general, the medium of inanimate matter and organic medium (hybrid resin with
Abrasive material and the resin medium of molding) compare low cost.But, for the medium of inanimate matter,
Owing to its surface is hard, the impulsive force producing machined object W is too strong, is therefore generally difficult to reality
Now equal with the situation that Wet type drum grinds grinding.On the other hand, if making medium 40 for porous
Plastid (generally Porous), then because of pore, the proportion of medium 40 reduces, therefore medium 40
The collision energy producing machined object W reduces.Its result, owing to medium 40 is to machined object
The impulsive force that W produces reduces, therefore, it is possible to the surface of suppression machined object W is the most coarse.This
Outward, it is also possible to expect the buffering effect utilizing the pore of the near surface being formed at medium 40 to produce.
It addition, in the medium of inanimate matter, sintered medium is compared with burning till medium, and the proportion of goods damageds are lower thus the longevity
Order longer.Select sintered medium in the present embodiment.
Enter and right it addition, be formed for lubricity described later imparting material 44 on medium 40 surface
It carries out the concavity maintaining part 42 kept.By this maintaining part 42, relative to medium 40 securely
Lubricity is kept to give material 44.That is, lubricity gives the material 44 attachment relative to medium 40
Power increases.Maintaining part 42 can be formed by arranging groove, it is also possible to by arranging pit
Formed, or can also be by arranging concavo-convex formation.Maintaining part 42 is by by as Porous
The pore of the medium 40 of body and be formed at the concavo-convex of the surface of medium 40 and formed.So, pass through
Make medium 40 for porous plastid, it is possible to the effect of the above-mentioned impulsive force that is inhibited with protect securely
Hold lubricity and give effect both effects of material 44.Therefore, it is possible to prevent machined object W
Surface the most coarse.
Lubricity gives material 44 and is practically free of oils and fats.Such as, lubricity gives the oil of material 44
The containing ratio of fat can also be below 0.5 mass %.Owing to lubricity gives material 44 the most not
Containing oils and fats, thus in the case of being coated with lubricity imparting material 44 on the surface of medium 40,
Do not make medium 40 surface wettability just can give lubricity to medium 40 surface.As an example,
The lubricity of present embodiment gives material 44 and is made up of with some inevitable impurity sodium soap.
As the fatty acid in sodium soap, such as can list complex acid, caproic acid, octanoic acid, capric acid,
Dodecylic acid, tetradecanoic acid, hexadecanoic acid, octadecanoid acid, oleic acid, linoleic acid, linolenic acid,
Or castor oil acid etc..Above-mentioned fatty acid can be the fatty acid of single kind, it is also possible to be containing two
Plant the mixture of above fatty acid.
It addition, lubricity gives material 44 can also replace sodium soap or and sodium soap
Contain fatty acid in the lump.As this fatty acid, such as, can list dodecylic acid or oleic acid etc..
Lubricity gives material 44 and can also replace sodium soap or contain example with sodium soap in the lump
Such as other the fatty acid metal salts such as fatty acid magnesium, fatty acid calcium or fatty acid potassium.
Medium 40 at least contain the aluminium oxide of 60～80 mass %, 10～30 mass % silicon dioxide,
The zirconium oxide of 4～8 mass % and the calcium oxide of 1～3 mass %, the most also can be containing some
Inevitable impurity (such as, K2O、TiO2、Na2O、HfO2Or P2O3Deng).Can not
Avoid the impurity also can be below 3% (or less than 2%).
But, due to medium 40 generally Porous, therefore the intensity of medium 40 entirety declines.
Such as, sometimes at medium 40, crackle or scarce occurs for basic point with pore because of the impact of cylinder grinding
Mouthful.Therefore, by making it possibly together with magnesium oxide as strengthening material, even if thus medium 40 be
Porous, it is also possible to make the intensity of medium 40 rise in cylinder grinds and will not go out at medium 40
Existing crackle or the degree of breach.The content of magnesium oxide can be 1～4 mass % (or 2～3 mass %),
In this case, it is able to confirm that by experiment and has obtained above-mentioned effect.
(manufacture method of medium)
Here, the method being used for manufacturing medium 40 is illustrated (manufacture method of medium 40).
In the manufacture method of medium 40, first carry out mixing operation.In this mixing operation,
Using abrasive grains, binding agent, as the magnesium oxide of strengthening material and as disappearing material powder
Aluminium-hydroxide powder weighs in the way of becoming the content of regulation, carries out afterwards mixing (hereafter
Middle these materials are referred to as " mixing material a ").Water can also be added as desired during mixing.
The addition of aluminium-hydroxide powder be mixing material a be 1 during 100 mass %～40 mass %
Amount.
As abrasive grains, it is possible to use alumina series abrasive grains (alumdum), carborundum system
Abrasive grains (corundum), fused alumina zirconia abrasive grains, diamond abrasive particles or CBN grind
Granule etc..In the feelings employing white alumina system abrasive grains (WA) as abrasive grains
Under condition, it is possible to obtain high abrasive power with low price, and will not be to machined object transfer grinding
The color of grain, the most preferably.It addition, the mean diameter of abrasive grains can be according to the purpose ground
And properly select.Such as, in the case of for the purpose of fine ground, from the model of 1～40 μm
Enclose selection.If here, the particle diameter of abrasive grains is too small, the abrasive power of medium reduces., the opposing party
Face, if the particle diameter of abrasive grains is excessive, particle adhesion each other is weak and the intensity of medium
Low.
Binding agent is to be the bond material for making abrasive grains be bonded to each other when sintering.Binding agent
Can properly select according to the kind of abrasive grains or sintering temperature etc..In present embodiment
In, binding agent is including at least silicon dioxide, zirconium oxide and calcium oxide.Additionally, contain at binding agent
In the case of having magnesium oxide, this magnesium oxide can be utilized as strengthening material.
It addition, in the mixing operation of present embodiment, as an example, add in mixing material a
Add sintering aid.Sintering aid can be at least one in manganese oxide and ferrum oxide (i.e., arbitrarily
One or both).The addition of sintering aid adds up to 100 mixing material a and sintering aid
During quality % be below 5 mass % (in the case of employing multiple material as sintering aid,
They add up to below 5 mass %) scope.
In ensuing molding procedure, will put into crowded by homomixture obtained by mixing in mixing operation
Pressing machine is also allowed to be shaped to the shape (in the present embodiment for triangular prism shape) of regulation.
In ensuing sintering circuit, by the molded body that molds in molding procedure dry
Heatproof container the time specified in stove is loaded with the temperature sintering of regulation under state.At this sintering
In operation, aluminium hydroxide dehydration decomposes.Its result, is converted into aluminium oxide and as solids volume
Reduce, and hydroxy becomes steam and volatilizees.That is, aluminium hydroxide is made to disappear in this operation.
By above-mentioned mixing, aluminium hydroxide is made to be homogeneously dispersed in mixing material a.Therefore, by this
Sintering circuit forms the porous plastid of separated foam structure, thus obtains being formed with holding on surface
The medium 40 of the sintered body in portion 42.
If additionally, aluminium-hydroxide powder is too high containing ratio, then the life-span can shorten, therefore hydrogen-oxygen
Change can also setting as described above containing ratio of aluminium powder.It addition, in this sintering circuit,
At least one in the manganese oxide added in mixing operation and ferrum oxide has as sintering aid
Play a role to effect.
(dry type cylinder Ginding process)
It follows that the dry type cylinder Ginding process employing medium 40 is illustrated.
First, the roller trough 12 at the cylinder lapping device 10 shown in Fig. 1 load medium 40 with
And lubricity gives material (omitting diagram in FIG).It follows that make and cylinder lapping device
10 vacuum cleaner 16 actions linked.
It follows that make cylinder lapping device 10 action, and medium 40 is made to give material with lubricity
Material (omitting diagram in FIG) flows in roller trough 12.Thus, as in figure 2 it is shown,
The surface coating of grinding medium 40 is practically free of the lubricity of oils and fats and gives material 44.Specifically
For, the coated portion 44C forming non-wetting on the surface of medium 40 gives profit to medium 40 surface
Slip (the first operation).As an example, lubricity gives material 44 by making 5～800 μm left
The material of the powder of right (but, be not limited to this size) particle diameter mixes also with medium 40
Flowing, and it is coated on the surface of medium 40.In the present embodiment, slip gives material 44
Main component for example, sodium soap.Therefore, it is possible to suppression lubricity gives the cost of material 44
And give lubricity to the surface of medium 40.
It addition, lubricity imparting material 44 such as can also be by making cubic (as an example
Cubic for 10mm × 10mm × 10mm～70mm × 70mm × 70mm) material and Jie
Matter 40 mixes and flows, and is coated on the surface of medium 40.It addition, lubricity gives material 44
Such as can also be by making material and the medium 40 of liquid (being concentration 10vol% as an example)
Mixed flow also makes it solidify, and is coated on the surface of medium 40.Make making liquid material
In the case of being coated for lubricity imparting material 44 mixes, have and the most quantitatively add
Add the advantage being difficult to be attracted by vacuum cleaner 16 (with reference to Fig. 1), and also be able to be suitable for being centrifuged
The quantitative interpolation of formula cylinder.Additionally, in the situation putting into liquid lubricity imparting material 44
Under, put into the amount of the degree not making medium 40 surface wettability.
After have passed through the stipulated time after making cylinder lapping device 10 action shown in Fig. 1, stop
The only action of cylinder lapping device 10.It follows that to the roller trough 12 of cylinder lapping device 10
Interior loading machined object W, and make medium 40 mix (in roller trough 12 with machined object W
Two operations).
It follows that make cylinder lapping device 10 action, surface is made to be given material 44 (ginseng by lubricity
According to Fig. 2) medium that is coated with 40 flows in roller trough 12 with machined object W.By utilizing
This flowing makes medium 40 contact with machined object W in a sliding manner, comes machined object W
It is ground (the 3rd operation).Now, owing to utilizing lubricity to give material 44 to improve medium
The mobility (sliding capability) of 40, gives touching by medium 40 thus without to machined object W
Hit produced excessive grinding load.Further, since utilize the pore of medium 40 buffer with
Impulsive force during machined object W collision, gives by medium 40 thus without to machined object W
The produced excessive abrasive power of collision.Therefore, it is possible to suppression medium 40 makes machined object W
Surface the most coarse, it is possible to carry out reducing the grinding of surface roughness of machined object W.That is,
The surface of machined object W is processed into smooth abradant surface.
It addition, as in figure 2 it is shown, owing to the medium 40 of porous plastid possesses holding in surface entirety
Portion 42, therefore lubricity gives the material 44 Adhesion enhancement relative to medium 40.Thus, it is situated between
Matter 40 can for longer periods keep lubricity to give material compared with the situation not possessing maintaining part 42
Material 44, therefore, it is possible to the most persistently suppress the surface of machined object W is the most coarse
Effect.Therefore, it is possible to give full play to lubricity to give the performance of material 44.
It addition, in this operation (the 3rd operation), by making lubricity give the confession of material 44
To device (omitting diagram) action, in roller trough 12, supply lubricity give material 44
While making medium 40 flow with machined object W.Therefore, even if because of the collision with machining object W
And lubricity gives material 44 and gradually cuts from medium 40, it is also possible to be coated with to the surface of medium 40
Apply newly supplied lubricity and give material 44.Therefore, suppression machined object W surface is the most coarse
Lasts.Additionally, be also intended to give material 44 to machined object W coating lubricity.But,
Owing to the surface of coated front or the most coated machined object W is ground by medium 40, therefore add
The surface of work thing W is gradually ground.
After have passed through the stipulated time after making cylinder lapping device 10 action, stop lubricity and compose
Give the action of the feedway of material 44, then stop the action of cylinder lapping device 10, and then
Then the action of vacuum cleaner 16 is stopped.Then, from roller trough 12 row of cylinder lapping device 10
Go out medium 40 and machined object W, they are separated and reclaims machined object W.
As it has been described above, according to present embodiment, although it is dry type cylinder Ginding process, but can
Guarantee the polish performance equal or close with Wet type drum Ginding process.
Additionally, such as, it is ground like that as medium at the material that surface is coated with oils and fats
Conventional example in, due to machined object adhere to oils and fats, it is therefore desirable to clean operation.With this
Relatively, in this case, the lubricity being practically free of oils and fats is utilized to give material
44 coating media 40 surfaces, and form the coated portion 44C of non-wetting.Thus, at machined object
W adheres to oils and fats hardly.Its result, has without clean operation or simplifies the advantage cleaning operation.
It follows that embodiment is illustrated.
First, the experimental result of air flowability is confirmed shown in table 1.Here, the number in table
Value is the angle of repose of measured medium.When putting at the plate that surface roughness is Ra=0.0146 μm
After having put medium, make this plate gradually tilt, using medium along this plate fall time angle of inclination as
Angle of repose.This mensuration relative to be coated with lubricity give material medium (described in table for " to have
Coating ") and do not given, by lubricity, the medium (described in table being " without coating ") that material applies
Each medium, every 20 are measured.
Table 1
Result according to table 1, it is judged that for by being coated making the angle of repose of medium to diminish.This knot
Fruit suggests: is coated the surface of medium if utilizing lubricity to give material, then improves medium
Lubricity, so when cylinder grinds improve medium mobility.
On the other hand, with sodium soap (lubricity imparting material), the surface of medium will be coated with
Situation about applying is as embodiment (embodiment 1～10), the feelings not being coated the surface of medium
Condition, as comparative example (comparative example 1～5), has been carried out by making medium in roller trough (grinding groove)
When mixing with machined object, the test of machined object is ground in flowing.
The condition grinding (cylinder grinding) is as shown in table 2 below.As machined object, employ one
Sheet measure machined object (S45C material (mechanical realization carbon element
Steel steel: JIS (Japanese Industrial Standards；Japanese Industrial Standards))) and 12L
Machined object (the SS400 material (of 30mm × 30mm × t3mm of the sample of (apparent volume)
As structure rolled steel: JIS)).
Table 2
The kind of table 2 medium is remarked additionally.Medium A and medium C (sintered medium) are
Make the medium that abrasive grains sinters each other.Medium B and medium D (burning till medium) is to make to grind
The medium that abrasive particle sinters with clay product.Medium E (resin medium) be by resin with
Medium obtained by abrasive mixed synthesis type.
It addition, embodiment 1 shown in Table 3 below～9 and each condition of comparative example 1～5 and
The measurement result of surface roughness, amount of grinding and the proportion of goods damageds.
Table 3
In the condition item of table 3, " medium " this project illustrates it is which of table 2 medium
Kind, " method " this project illustrates dry type cylinder Ginding process or Wet type drum Ginding process.
Additionally, in Wet type drum Ginding process, in grinding groove in add 11L water and with the addition of
The grinding aid (abrasive pastes) of 50ml.
" input of sodium soap " this project illustrates that " having " or "None" apply to dielectric surface
The operation of the sodium soap of material is given as lubricity.Here, in the case of " having ",
It is to put into powder, solid, any state of liquid shown in bracket.
Utilize scanning electron microscope ((strain) Hitachi system；And energy dispersion type S3400)
X-ray analysis equipment (EDAX system；Genesis 4000) carry out spectrum analysis and surface analysis
(mapping), thus confirm to be formed with sodium soap on the surface of medium.As an example, real
Execute shown in the Spectroscopic analysis results such as Fig. 3 (A) of example 3, to embodiment 3 and Jie of comparative example 1
Matter surface is carried out shown in the result such as Fig. 3 (B) of surface analysis.For the medium of embodiment 3,
According to Fig. 3 (A), owing to the ion (sodium ion) from sodium soap being detected, thus confirm
The existence of sodium soap.Additionally, other peak values in this accompanying drawing illustrate the composition from medium.
It addition, judge that sodium soap is distributed in the surface entirety of medium according to Fig. 3 (B).That is, show
Go out following situation: if put into sodium soap when carrying out cylinder and grinding, then overall on the surface of medium
Coating sodium soap.
It addition, in the condition item of table 3, " Al (OH)3" this project of interpolation be shown in system
Whether mixing operation when making medium with the addition of the powder of aluminium hydroxide.With the addition of aluminium hydroxide
Powder in the case of, the ratio of its addition shown in bracket.Above-mentioned shown in bracket
The ratio of the addition of aluminium hydroxide is by mixing material (the mixing material a) in above-mentioned embodiment
It is set to quality % during 100 mass %.Additionally, be added with Al (OH)3In the case of, medium
For porous plastid, and do not adding Al (OH)3In the case of, medium will not become porous plastid
And become the DB that surface ratio is smoother.
Additionally, " batch number " this project illustrates which time utilizing same medium to carry out is ground.
In actual milled processed, after grinding for the first time, take out machined object, be then charged into new quilt
Machining object and utilize same medium carry out second time grind, use same medium in the above-described manner repeatedly
Be ground, the taking-up of machined object and loading.Here, in table batch number be 1 example show
Going out the measurement result of the machined object taken out after grinding for the first time, in table, batch number is 10
Example (embodiment 9) is shown in the measurement result of the machined object taken out after grinding the tenth time.
It addition, in the result project of table 3, " surface roughness " is to utilize surface configuration coarse
Degree analyzer ((strain) Tokyo precision system；Surfcom 1500DX) determine machined object surface
Surface roughness Ra (JIS B6001；1994) result.The unit of " surface roughness " is
μm." amount of grinding " is to utilize electronic balance ((strain) Shimadzu Seisakusho Ltd. system；IPS-DP10) divide
Not Ce Ding " quality of the machined object before processing " and " quality of the machined object after processing ",
And be the result that time per unit is evaluated by their differential conversion.The unit of " amount of grinding "
For mg/h.
It addition, " proportion of goods damageds " are to utilize above-mentioned electronic balance to measure the " medium before processing respectively
The quality of (measure and use) " and " quality of the medium (measure and use) after processing, and by following
The result that formula 1 calculates.The unit of " proportion of goods damageds " is %/h.
Formula 1
Result according to table 3, it is judged that in embodiment 1～10, it is possible to polish is and compares
The surface roughness that the Wet type drum Ginding process of example 3,4 is equal or close.Particularly comparing
When embodiment 3 and embodiment 10, in the case of selecting sintered medium as medium, it is judged that for
More preferable result can be obtained.
(supplementary notes of embodiment)
Additionally, as the variation of above-mentioned embodiment, it is also possible to by utilizing the planet of grinding groove
Rotate or vibration etc. makes blocks flow, and carries out the grinding of machined object.Additionally, as cylinder
The kind ground, in addition to flow-type cylinder as above-mentioned embodiment, such as, also has and is claimed
Make the kinds such as centrifugal cylinder, vibration type cylinder, rotary roller and gyroscope type cylinder.
It addition, as the variation of above-mentioned embodiment, make abradant medium, machined object with
And lubricity gives material and mixes (the second operation) in grinding groove, these blocks are made to grind
Flowing in groove, applies lubricity imparting material to the surface of medium.Thus, it would however also be possible to employ following
Form: the coated portion forming non-wetting gives lubricity (the first operation) to the surface of medium, and
And grind machined object (the 3rd operation) by making medium and machined object flow in grinding groove.
It addition, in the 3rd operation of above-mentioned embodiment, utilize not shown feedway
Lubricity gives material supply to roller trough 12, make medium 40 and machined object W
Flowing.However, it is also possible to do not carry out such lubricity to give the supply of material, and by adding
Give material by the lubricity of the component of needs to be previously charged in roller trough 12.
It addition, as the variation of above-mentioned embodiment, according to the performance (polish needed for medium
Performance and life-span etc.), it is also possible to become and make the consisting of of medium of sintered body such as comprise 60～80
The aluminium oxide of quality %, 10～30 silicon dioxide, 4～8 zirconium oxide, 1～3 of mass % of mass %
The calcium oxide of quality % and less than 1 mass % or be the sintered body of magnesium oxide of 5 mass %
Medium.
It addition, the variation of manufacture method of the medium as above-mentioned embodiment, disappearing material powder
End can also be such as other disappears such such as the powder of foamed polystyrene resin, powdered graphite
Lose material powder.If additionally, ceramic binder using foamed polystyrene resin as disappearance material
Material, then have a reason of medium endogenous cause of ill disappearing material after sintering and the impurity (such as, carbon) that produces
Remaining in the probability of crystal boundary, this impurity is likely to become a reason (product reducing dielectric strength
Raw crack).On the other hand, as embodiment described above, using aluminium hydroxide as disappearance
In the case of material, even if being sintered, it is viscous with as pottery that aluminium hydroxide is also decomposed into steam
Aluminium oxide (the Al of the main component of mixture2O3).Therefore, having will not be in medium after sintering
The advantage of the impurity that residual produces because of the reason of disappearing material.
It addition, the variation of manufacture method of the medium as above-mentioned embodiment, it would however also be possible to employ
Without manganese oxide and the method for ferrum oxide in mixing operation.
Additionally, above-mentioned embodiment and above-mentioned multiple variation can be combined as implementing.
Above, embodiment and variation are illustrated, but the present invention does not limit certainly
In above-mentioned content, than that described above, without departing from can carry out in the range of its purport various respectively
The deformation of sample is implemented.
The explanation of reference:
12 ... roller trough (grinding groove)；40 ... medium；42 ... maintaining part；44 ... lubricity gives
Material；44C ... coated portion；W ... machined object.
Claims (11)
1. a dry type cylinder Ginding process, carries out cylinder to machined object in the way of dry type and grinds
Mill, wherein, has:
First operation, in this first operation, by the medium used in grinding described cylinder
Surface coating lubricity give material and form the coated portion of non-wetting, the surface to described medium
Give lubricity；
Second operation, in this second operation, makes described medium and described machined object at grinding groove
Interior mixing；And,
3rd operation, in the 3rd operation, by making described medium and described machined object in institute
In stating grinding groove, described machined object is ground by flowing.
Dry type cylinder Ginding process the most according to claim 1, wherein,
In described 3rd operation, in described grinding groove, supply described lubricity give material
While making described medium flow with described machined object.
Dry type cylinder Ginding process the most according to claim 1 and 2, wherein,
Described lubricity gives material and contains fatty acid or soap.
Dry type cylinder Ginding process the most according to claim 3, wherein,
Described fatty acid or soap contain sodium soap.
5. according to the dry type cylinder Ginding process described in any one in Claims 1 to 4, wherein,
Described medium is the medium of inanimate matter, and the surface configuration at described medium has for described lubricity
Give material enter and give, to described lubricity, the maintaining part that material keeps.
Dry type cylinder Ginding process the most according to claim 5, wherein,
Described maintaining part is formed by making described medium become porous plastid.
Dry type cylinder Ginding process the most according to claim 6, wherein,
Described medium is at least to contain the aluminium oxide of 60～80 mass %, 10～30 dioxies of mass %
SiClx, 4～8 mass % zirconium oxide, 1～3 mass % calcium oxide and 1～4 mass %
The sintered body of magnesium oxide.
8. a manufacture method for medium, is for the dry type cylinder described in manufacturing claims 7
The method of the medium that Ginding process is used, wherein, including:
Mixing operation, in this mixing operation, to abrasive grains, binding agent, magnesium oxide and disappear
Lose material powder to mix；
Molding procedure, in this molding procedure, will mix in described mixing operation obtained by mix
Thing is shaped to the shape of regulation；And
Sintering circuit, in this sintering circuit, to the molded body molded in described molding procedure
It is sintered and forms sintered body, and make described disappearing material powder disappear, at described sintered body
Surface form described maintaining part.
The manufacture method of medium the most according to claim 8, wherein,
By described abrasive grains, described binding agent, described magnesium oxide and described disappearing material powder
In the case of the total at end is set to 100 mass %, the addition of described disappearing material powder is 1～40
The amount of quality %.
The manufacture method of medium the most according to claim 8 or claim 9, wherein,
Described disappearing material powder is aluminium-hydroxide powder.
The manufacture method of 11. media described in any one according to Claim 8～in 10, wherein,
In described mixing operation, containing described abrasive grains, described binding agent, described oxidation
The mixing material of magnesium and described disappearing material powder add in manganese oxide and ferrum oxide at least
One, by least one in described mixing material and described manganese oxide and described ferrum oxide
Add up in the case of being set to 100 mass %, at least one in described manganese oxide and described ferrum oxide
Content be below 5 mass %.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2014-078918 | 2014-04-07 | ||
| JP2014078918 | 2014-04-07 | ||
| PCT/JP2015/054317 WO2015156033A1 (en) | 2014-04-07 | 2015-02-17 | Dry barrel polishing method, and medium production method |
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| CN106029298A true CN106029298A (en) | 2016-10-12 |
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| JP (1) | JP6414206B2 (en) |
| CN (1) | CN106029298A (en) |
| TW (1) | TWI670140B (en) |
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| CN105586005B (en) * | 2016-01-14 | 2018-02-23 | 洛阳三睿宝纳米科技有限公司 | A kind of preparation method of Nano Alumina Abrasive |
| WO2019065253A1 (en) * | 2017-09-28 | 2019-04-04 | 新東工業株式会社 | Dry rotary barrel polishing device, dry rotary barrel polishing system, and dry rotary barrel polishing method |
| JP7159842B2 (en) * | 2018-12-14 | 2022-10-25 | 新東工業株式会社 | Abrasive media for barrel polishing |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2015156033A1 (en) | 2015-10-15 |
| JPWO2015156033A1 (en) | 2017-04-13 |
| TWI670140B (en) | 2019-09-01 |
| JP6414206B2 (en) | 2018-10-31 |
| TW201544238A (en) | 2015-12-01 |
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