CN104669097A - Barreling method - Google Patents
Barreling method Download PDFInfo
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- CN104669097A CN104669097A CN201410687166.5A CN201410687166A CN104669097A CN 104669097 A CN104669097 A CN 104669097A CN 201410687166 A CN201410687166 A CN 201410687166A CN 104669097 A CN104669097 A CN 104669097A
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- machined object
- abrasive media
- resin
- antirust function
- grinding process
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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
- B24B31/02—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
- B24B31/033—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 having several rotating or tumbling drums with parallel axes
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- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides a barreling method. Blocks containing processed materials and an abrasive medium are put in a drum groove for barreling. The abrasive medium is formed into structures containing resin, so that the resin component in the abrasive medium is attached to the surface of the processed materials to form extremely thin resin skin films when the processed materials are ground. The barreling method can provide excellent rust-proof function without influencing the dimensional accuracy of the processed materials.
Description
Technical field
Embodiments of the present invention relate to can give machined object antirust function and the grinding process of the dry type of the antirust agent of medicament is coated on the surface noting be used in machined object.
Background technology
Barreling is widely used in the surface treatment (deflashing, rounding processing, surface roughness adjustment, level and smooth fine finishining, polishing, minute surface fine finishining, thin layer removing etc.) of machined object.In barreling, by making block (mass) liquidation of loading roller trough, thus carry out the grinding of machined object.Here, block refers to the material be made up of the article loading roller trough (being machined object and abrasive media etc. in dry type).For tumbling apparatus, well-known have the rotating disc of the bottom making to be arranged at roller trough to rotate and make the running barrel device of the type of mass flow automation, make roller trough rotation-revolution and make the centrifugal drum device of the type of mass flow automation, roller trough is vibrated and makes the vibrator device etc. of the type of mass flow automation.
When the machined object of abrasive metal system, there is the passage of the time after along with grinding, produce the problem of rust on the surface of machined object.Therefore, in the barreling of dry type, the machined object carried out after grinding coats the process of antirust agent.In the barreling of wet type, ground by the mixture added containing antirust agent, thus coat antirust agent at machined object.In following patent document 1, record following barreling system: the machined object that the rotation by roller trough is polished impregnated in antirust solution, prevent from thus producing rust at machined object.
Antirust agent is had at the surface application of the machined object by the system processing described in patent document 1.The general medicament such as using acylate, diethanol amine, triethanolamine such is as antirust agent.
Patent document 1: Japanese Unexamined Patent Publication 2002-254290 publication
When using above-mentioned medicament, before being assembled in product by subsequent handling, need to arrange cleaning machined object thus the operation of removing antirust agent.If add the operation of this antirust agent of removing, then there is the problems such as the manufacturing cost increase of product caused because to increase the man-hour involved by the process of the waste water produced by cleaning, cleaning etc.
Summary of the invention
Therefore, a side of the present invention is to provide a kind of grinding process, can carry out barreling and implement antirust treatment to machined object, and the antirust agent of medicament is coated on the surface noting be used in machined object.
A side of the present invention provides a kind of grinding process, by the mass flow automation containing machined object and abrasive media thus with dry grinding machined object, this grinding process possesses: block loads operation, loads in operation above-mentioned block is loaded roller trough at this block; And liquidation operation, make in this liquidation operation above-mentioned block in above-mentioned roller trough liquidation thus utilize above-mentioned abrasive media grind machined object, and the surface of machined object formed epithelium thus give antirust function.According to the grinding process of a side, in liquidation operation, grind machined object, and form epithelium on the surface of machined object.Owing to being hindered oxygen in surface and the air of machined object and contact with moisture by this epithelium, so can prevent from producing on the surface of machined object becoming rusty.In this grinding process, owing to not needing the antirust agent making with medicament as in the past, so the operation of removing antirust agent can not arranged in subsequent handling.In addition, in a mode, in above-mentioned liquidation operation, the above-mentioned epithelium that thickness is 0.1 ~ 10.0nm can be formed.By forming extremely thin epithelium like this, thus can rust-proof effect be obtained, and bring impact can not to the dimensional accuracy of machined object.
Also can be configured in a mode, in above-mentioned liquidation operation, utilize the abrasive media grinding machined object of structure abrasive particle being scattered in resin, and utilize the above-mentioned resin contained by above-mentioned abrasive media form the epithelium of this resin on the surface of machined object thus give antirust function.According to the manner, grind by means of only abrasive media and machined object are loaded roller trough, just can give machined object antirust function.
Also can be configured in a mode, the antirust function that above-mentioned block also comprises as powder or formed body gives material.Further, in above-mentioned liquidation operation, utilize above-mentioned abrasive media to grind machined object, and utilize above-mentioned antirust function give the epithelium of the composition of material at this antirust function of the surface of machined object formation formation imparting material thus give antirust function.In the manner, form epithelium for giving machined object antirust function due to material can be given by antirust function, so the material of abrasive media being not particularly limited.That is, due to required finishing stage can be coordinated freely to select abrasive media, so barreling can be carried out efficiently.If particularly above-mentioned antirust function is given material be configured to resin, aliphatic acid or wherein at least any one for main component, then easily can form extremely thin epithelium on the surface of machined object, therefore, it is possible to easily give machined object antirust function.
When above-mentioned block also gives material containing the antirust function as powder or formed body, above-mentioned grinding process also can possess also to possess and utilizes above-mentioned antirust function to form epithelium with giving the surperficial non-wetted of material at abrasive media thus give the operation of the surface lubrication of above-mentioned abrasive media.Due to the lubricity by the epithelium that formed on the surface of abrasive media raising abrasive media, so during liquidation, the impulsive force of abrasive media to machined object can be weakened making block in roller trough.That is, according to this grinding process, machined object antirust function can be given, and can adjust the finishing stage of machined object (surface roughness, Adjusting Shape etc.).
In addition, also can be configured in a mode, above-mentioned block also comprises abrasive particle, in above-mentioned liquidation operation, utilize above-mentioned abrasive media and above-mentioned abrasive finishing process machined object, and utilize above-mentioned antirust function to give material at the epithelium of the surface of machined object formation as the main component of this antirust function imparting material.By abrasive particle, abrasive power is adjusted, thus can adjust finishing stage.
In addition, also can be configured in a mode, above-mentioned abrasive media or take resin as the above-mentioned resin that the above-mentioned antirust function of main component is given in material take nylon as main component.If resin, then machined object antirust function can be given, but if be main component with nylon, then extra high antirust function can be given.In addition, antirust function can be given at an easy rate.
By a side of the present invention or each mode, the grinding of machined object and the imparting of antirust function can be carried out simultaneously.In addition, owing to as in the past the antirust agent of medicament not to be coated on the surface of machined object, so do not need in subsequent handling the operation removing antirust agent.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the centrifugal barrel polishing device used for illustration of embodiments of the present invention.
Fig. 2 is the flow chart of an example of the manufacturing procedure representing the machined object that embodiments of the present invention use.
Fig. 3 is the flow chart of the grinding process representing an embodiment.
Fig. 4 is an example (embodiment 1) of the analysis result on the surface of machined object in the first embodiment.Fig. 4 (A) is the spectrum resolution result of anion, and Fig. 4 (B) is the result of map analysis.
Fig. 5 is an example of the analysis result on the surface of machined object in the second embodiment.Fig. 5 (A) is the spectrum resolution result of the cation of embodiment 20 and rough, and Fig. 5 (B) is the result of the map analysis of embodiment 20.
The explanation of Reference numeral:
10... centrifugal barrel polishing device; 11... roller trough; 12... roller trough housing; The 12a... axis of rotation; 13... turntable (revolution disk); 13a, 13b... bearing; 14... hollow shaft; 15... driving mechanism; 15a... CD-ROM drive motor; 15b... motor pulley; 15c... revolves round the sun belt wheel; 15d... rotating band; 16... follower; 16a... driving pulley; 16b... driven pulley; 16c... driven belt.
Detailed description of the invention
With reference to accompanying drawing, an example of the present invention is described.In the following description, the situation by the SUJ2 material of centrifugal barrel polishing device using dry grinding as the machined object of iron system (JIS (Japanese Industrial Standards) G4805:2008 specifies) is described as an example.In addition, unless otherwise indicated, the direction up and down in explanation refers to the direction in figure.
Fig. 1 is the schematic diagram of the tumbling apparatus 10 of present embodiment.Tumbling apparatus 10 shown in Fig. 1 is centrifugal barrel polishing devices, and possesses: 4 roller trough 11, and they load for block; 4 roller trough housings 12, they are fixed with roller trough 11 in the mode of freely loading and unloading respectively; A pair turntable 13 (revolution disk), they are with the mode resting barrel slot shell 12 that can rotate; Hollow shaft 14; Driving mechanism 15, above-mentioned hollow shaft 14 makes turntable 13 rotate as axle center by it; Follower 16, its rotation being driven in turntable 13 makes roller trough housing 12 rotate.In addition, in FIG, conveniently, 3 roller trough 11 and 3 roller trough housings 12 are only shown.
Roller trough 11 is the containers of the hollow dividing the space with octagonal section shape therein, and by the tubular of upper surface open roller trough main body, form with the roller trough lid in the space that can cover this opening portion and sealed inside.
Roller trough housing 12 possesses axis of rotation 12a at two ends respectively.Roller trough housing 12 is configured to the roller trough 11 by inner sealing to be fixed on roller trough housing 12 in the mode of freely loading and unloading relative to roller trough housing 12.
A pair turntable 13 has disc-shape, and arranges in opposed facing mode.The clutch shaft bearing 13a that hollow shaft 14 can be fitted together in the mode that can rotate is provided with in the central authorities (central authorities as the side of circular flat) of each turntable 13.At each turntable 13,4 the second bearing 13b are disposed at equal intervals along its circumference.Above-mentioned second bearing 13b is separately chimeric with the axis of rotation 12a of 4 roller trough housings 12, and supports each axis of rotation 12a for rotating.Turntable 13 is supported at the fixing hollow shaft 14 of bracing strut 14a in the mode that can rotate respectively via clutch shaft bearing 13a.In addition, roller trough housing 12 configures in the mode sandwiching each turntable 13 via axis of rotation 12a and the second bearing 13b.According to this structure, roller trough housing 12 with at equal intervals, and to configure in the mode that can relatively rotate relative to turntable 13 between a pair turntable 13.
Driving mechanism 15 is made up of CD-ROM drive motor 15a, the motor pulley 15b being fixed on the rotating shaft of above-mentioned CD-ROM drive motor 15a, the revolution belt wheel 15c being arranged at the periphery of the above-mentioned turntable (being left side in FIG) of a side and the rotating band 15d be set up between motor pulley 15b and revolution belt wheel 15c.
Follower 16 is by being fixed on the driving pulley 16a of the axis of rotation, the driven pulley 16b being fixed on above-mentioned axis of rotation 12a and the driven belt 16c that is set up in above-mentioned driving pulley 16a and above-mentioned driven pulley 16b is formed.
If make CD-ROM drive motor 15a start, then turntable 13 rotates centered by hollow shaft 14.Along with the rotation of this turntable 13, the roller trough 11 being fixed on roller trough housing 12 with hollow shaft 14 for axle center convolution (revolution).In addition, roller trough 11 by follower 16 with axis of rotation 12a for axle center rotates (rotation) around the direction contrary with the direction of rotation of turntable 13.
As described above, roller trough 11 can carry out the convolution based on the rotation of the rotation of self and the rotation based on turntable 13.If make roller trough 11 rotation-revolution (planetary motion), then the block containing machined object and abrasive media becomes flow regime.Thus, machined object by with the contact of abrasive media, machined object contact each other, with the contact of the wall of roller trough 11 and being polished.
Example when being iron system as machined object, the general manufacturing procedure of the parts of bearings be made up of SUJ2 material shown in Figure 2.In the manufacturing procedure shown in Fig. 2, after the shape by blocks machining being parts of bearings (S01), implement heat treatment (S02), it can be used as machined object to carry out gyro-finishing (adjustment of surface roughness) (S03).Next, machined object (S04) is cleaned.If place machined object after being cleaned by machined object, then produce rust on the surface of machined object as time goes by.Particularly, the erosion of red rust to machined object is higher, and therefore along with the generation of red rust, the problem that the deteriorated dimensional accuracy of machined object or intensity reduce produces.Therefore, in the conventional method, antirust treatment (S05) is implemented, so that until rust can not be produced during being assembled in product.This antirust treatment by applying the aqueous solution of antirust agent (medicament) or machined object being dipped in the aqueous solution of antirust agent, thus is coated antirust agent to carry out on the surface of machined object.Machined object carried out the inspection of size etc. before assembling as bearing.Now, if be attached with antirust agent, then can become the reason that measuring appliance produces fault, or the reliability of measurement result is had an impact.Therefore, cleaning machined object thus except attachment removal antirust agent after (S06), as bearing assembled (S07), and bearing completes.
When carrying out cleaning (S06) removing antirust agent, produce a large amount of waste water.Due in order to process this waste water, the manufacturing cost of product rises, impacts environment, so seek a kind of manufacture method not needing the operation of cleaning anti-rust agent.Through wholwe-hearted research, consequently invent and a kind ofly can grind machined object and give the grinding process of antirust function.Thereby, it is possible to realize not needing based on antirust agent antirust treatment (S05) and remove the manufacture method of operation (S06) of this antirust agent.Be described in detail for below this grinding process.
(the first embodiment)
Below, the grinding process of the first embodiment is described.Fig. 3 is the flow chart of the grinding process representing the first embodiment.In this grinding process, first, the block comprising metal machined object and abrasive media is loaded (operation S21, block load operation) in roller trough 11.This abrasive media is the resin medium containing resin.Next, by making block liquidation in roller trough, thus utilize abrasive media to grind (operation S22, liquidation operation) machined object.In this operation S22, collided by abrasive media and machined object, thus grinding machined object.In addition, be attached to the surface of machined object by the resin contained by abrasive media, thus form the epithelium being main component with this resin.
As the resin contained by abrasive media, suitably can select from thermoplastic resin (such as polyamide, polystyrene, Merlon, ABS, polypropylene, polyamide, acrylonitrile styrene etc.), heat-curing resin (such as phenolic resins, unsaturated polyester resin, polyurethane resin, epoxy resin, Lauxite etc.).Wherein, owing to being the material that polarity is stronger as the nylon resin of polyamide series resin, if so form the epithelium of nylon resin on the surface of machined object, then integral waterproofing improves.Consequently, good rust-proof effect can be obtained.In addition, because nylon resin is cheap material, so by making abrasive media contain nylon resin, can reduce costs and improve rust-proof effect.
Although abrasive media can be only made up of resin, in order to improve grainding capacity, also can be made up of the resin being dispersed with abrasive particle.The powder of the known materials such as aluminium oxide, silica gel, carborundum, iron oxide, silica, zircon, chromium oxide, diamond, diamond dust or grain can be used as abrasive particle.In the present embodiment, the powder dispersion of aluminium oxide is made to form abrasive media in resin.
In addition, if the undersized of abrasive particle, then abrasive power is not enough or cannot obtain the effect that abrasive particle is disperseed.If the granularity of abrasive particle is excessive, then the confining force produced by resin is more weak, and in grinding, abrasive particle easily comes off, and therefore along with the passage of milling time, the grainding capacity of abrasive media significantly reduces.Accordingly, the granularity of the abrasive particle used when being dispersed with the resin of abrasive particle can be 35 μm ~ 71 μm.
In addition, the containing ratio of abrasive particle is suitably selected to the adhesion amount etc. of machined object by the grainding capacity of consideration required by abrasive media, the intensity of abrasive media, resin.If the amount of abrasive particle is very few, then grainding capacity is not enough, or cannot obtain the effect that abrasive particle is disperseed.If the containing ratio of abrasive particle is too much, then resin-phase is to tailing off, and therefore resin is difficult to be attached to machined object, or the intensity of abrasive media reduces.Accordingly, the containing ratio of abrasive particle when being dispersed with the resin of abrasive particle is used can be 65 quality % ~ 85 quality % (are preferably 70 quality % ~ 80 quality %, are more preferably 70 quality % ~ 75 quality %) relative to abrasive media.
The abrasive media of present embodiment employs following medium, namely, a material of resin material (nylon) and the abrasive particle of, the alumina series that meets the #320 (average grain diameter d50=46 μm) that JIS R6001:1998 specifies with the granularity of the mode weighing becoming the scope of 65 quality % ~ 85 quality % relative to entirety are added hot milling, abrasive particle is made to be scattered in resin, afterwards, triangular prism is shaped to by injection moulding machine.
If machined object and this abrasive media are loaded roller trough 11, and make tumbling apparatus 10 start, then block becomes flow regime in the inside of roller trough 11.Because abrasive media contacts with machined object, so by the abrasive particle on the surface that is positioned at abrasive media, carry out the grinding of machined object.In addition, contacted with machined object by abrasive media, thus the resin of abrasive media is attached to the surface of machined object.Inventor infers that attachment phenomenon results from least any one in following (1), (2).
(1) because of the collision energy of abrasive media, its contact point local becomes high temperature.Because of this heat, the resin melting of abrasive media, this resin is attached to the surface of machined object.
(2) abrasive media and machined object produce rub time, the resin of abrasive media is attached to the surface of machined object by friction.
Because the oxygen in the constituent material of machined object and air, moisture react, thus produce rust on the surface of machined object, continue to get rusty.According to the grinding process of above-mentioned embodiment, because resin is attached to the surface of machined object, so the chance that its surface is directly exposed to extraneous air reduces.Thereby, it is possible to suppress to produce rust on the surface of machined object.In order to fully prevent rust from producing further, resin bed (epithelium) can be formed in the mode of the surface integral covering machined object.Here, if the thickness of epithelium is excessively thin, be then difficult to give machined object antirust function fully.On the contrary, if epithelium is blocked up, then the deteriorated dimensional accuracy of machined object, or become large because of epithelial surfaces roughness, thus quality reduces.In addition, thickening along with epithelium, die down with the clinging force of machined object, thus be easily peeling.Therefore, the thickness of the epithelium of the resin formed on the surface of machined object can be 0.1 ~ 10.0nm (be preferably 0.2 ~ 5.0nm, be more preferably 0.2 ~ 2.0nm).
(the second embodiment)
Next, carrying out the alternate manner of barreling by giving machined object antirust function, being described as the second embodiment.In the following description, the point different from the first embodiment is described.
In the grinding process of present embodiment, identical with the grinding process of the first embodiment, first, block containing metal machined object and abrasive media is inserted in roller trough 11, next, by making block liquidation in roller trough, thus machined object is ground by abrasive media.But, for the grinding process of present embodiment, at block except also giving in material containing antirust function containing except machined object and abrasive media, different from the grinding process of the first embodiment.In addition, in the present embodiment, abrasive media also can not contain resin.In the grinding process of present embodiment, collided by abrasive media and the machined object of flowing, thus grind machined object.In addition, the composition giving material by forming antirust function is attached to the surface of machined object, thus forms the epithelium of this composition.
Antirust function is given material and also can be configured to any one in the salt of resin, sodium soap and sodium soap as main component.Machined object antirust function is given, so the material of abrasive media being not particularly limited owing to giving material by antirust function.Such as, suitably from the abrasive media (resin medium) being only made up of resin or being made up of the resin being dispersed with abrasive particle, select the abrasive media (ceramic dielectric) of the pottery of abrasive particle and the mixing abrasive media (firing medium) fired of clayey or the abrasive media (sintered medium) sintered each other by abrasive particle and so on, the abrasive media (metal medium) that is made up of metal etc., the abrasive media of present embodiment can be used as.In the grinding process of present embodiment, due to the material that required finishing stage can be coordinated to select abrasive media, so higher than the first embodiment versatility.In addition, also can use the abrasive media (resin medium) of the first embodiment, the formation based on the epithelium of resin medium is combined with the formation of giving the epithelium of material based on antirust function.
Main component due to antirust function imparting material is identical with the first embodiment when being resin, can form the epithelium of this resin on the surface of machined object, so can give machined object antirust function by this epithelium.The resin used as antirust function imparting material is identical with the first embodiment, suitably can select from thermoplastic resin, heat-curing resin.Can, according to the reason identical with the first embodiment, select nylon resin as resin.
Antirust function give the main component of material be aliphatic acid or soap situation with use resin compared with the antirust function of main component gives the situation of material, higher rust-proof effect can be obtained.Although its reason is also indefinite, is speculated as and is formed with the epithelium finer and close than the epithelium of resin.Main component as antirust function imparting material is an example of the situation of aliphatic acid, has exemplified laurate, oleic acid etc.In addition, the main component as antirust function imparting material is an example of the situation of soap, has exemplified the fatty acid metal salts such as sodium soap, fatty acid magnesium, fatty acid calcium, aliphatic acid potassium etc.In above-mentioned aliphatic acid and soap, particularly sodium soap can give machined object higher antirust function more at an easy rate.In addition, as use sodium soap as the aliphatic acid in sodium soap when soap, such as, butyric acid, caproic acid, sad, capric acid, laurate, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, leukotrienes, castor oil acid (Ricinoleic Acid) etc. are exemplified.Above-mentioned aliphatic acid can be single, also can be comprise two or more mixtures.
It also can be any one in the powder of formed body (particle) that size is less than abrasive media or resin that antirust function gives material.When antirust function imparting material is formed body, the surface smoothing more of machined object can be made by this formed body, the epithelium of the composition forming this formed body can be formed simultaneously.If oversize relative to abrasive media of this formed body, then hinder the grinding based on abrasive media.On the contrary, if undersized, then the chance contacted with machined object due to formed body reduces, so be difficult to give machined object sufficient antirust function.Therefore, the size of formed body can be that limit or diameter are less than abrasive media, and the volume of formed body is 1/5 ~ 2/3 relative to abrasive media.
When antirust function imparting material is powder, when abrasive media contacts with machined object, this powder is pressed on the surface of machined object, thus a part of melting, consequently, the composition forming antirust function imparting material is attached to the surface formation epithelium of machined object.But, if the particle diameter of powder is excessive or too small, be then difficult to form epithelium.If excessive, then the reduction due to fusing point is less, so cannot obtain the effect becoming powder, if too small, then the chance contacted with machined object reduces.The particle diameter of powder can be selected from the scope of 50 ~ 100 μm (average grain diameters: d50).
In addition, even if when antirust function imparting material is any one in formed body, powder, if too much relative to the charge weight of abrasive media, then hinder the grinding based on abrasive media, if very few, the chance then contacted with machined object due to antirust function imparting material reduces, so cannot give machined object sufficient antirust function.Such as, when antirust function imparting material is formed body, the charge weight of this formed body is relative to abrasive media, and the volume of outward appearance can be 1/5 ~ 1/2.
In addition, except machined object, abrasive media and antirust function give material, further abrasive particle can also be loaded roller trough and carry out barreling.Now, due to the abrasive particle by loading roller trough, also machined object can be ground, so the adjustment of finishing stage can be carried out, abrasive power can be strengthened by abrasive particle when using the abrasive media more weak with the impulsive force of machined object (abrasive media that the abrasive media that the proportion such as such as plant is lower, surface are soft).In addition, when machined object is three-dimensional shape, corner portion also can grind well.
The granularity and the material that load the abrasive particle of roller trough suitably can be selected according to finishing stage.The granularity of abrasive particle such as can be selected from 18 μm ~ 25 μm.In addition, material has such as exemplified aluminium oxide, silica gel, carborundum, iron oxide, silica, zircon, chromium oxide, diamond, diamond dust etc.
In addition, if the charge weight of abrasive particle is few, then cannot obtains the effect that the abrasive power based on abrasive particle improves, if the charge weight of abrasive particle is many, then hinder the grinding based on abrasive media.The charge weight of abrasive particle can become for the volume of outward appearance 0.1 ~ 3.0% (being preferably 0.1 ~ 2.0%) that machined object, abrasive media and antirust function give the volume of the outward appearance of material.
(embodiment)
Next, the result of the grinding process grinding by the first embodiment and the second embodiment is described.Machined object (the SUJ2 material of diameter 6mm × height 8mm or SS400 material) and abrasive media are respectively charged into 4 roller trough of centrifugal tumbling mill (Xindong Industry Co's system: EC-2).The abrasive media of use is below shown.
Abrasive media A: what formed by the nylon resin of the abrasive particle being dispersed with aluminum oxide is the abrasive media of the triangular prism shape of 7mm.
Abrasive media B: what only formed by nylon resin is the abrasive media of the triangular prism shape of 7mm.
Abrasive media C: what formed by the polystyrene being dispersed with abrasive particle is the abrasive media of the triangular prism shape of 7mm.
Abrasive media D: what formed by the Merlon of the abrasive particle being dispersed with aluminum oxide is the abrasive media of the triangular prism shape of 7mm.
Abrasive media E: what formed by the ABS resin of the abrasive particle being dispersed with aluminum oxide is the abrasive media of the triangular prism shape of 7mm.
Abrasive media F: sintered medium (Xindong Industry Co's system: V7-EG 10 × 7)
Abrasive media G: fire medium (Xindong Industry Co's system: AFT 10 × 7)
In addition, experimentally condition, also encloses antirust function and gives material and abrasive particle (Xindong Industry Co's system: WA#800).Below illustrate that the antirust function of use gives material.
Antirust function gives materials A: the powder (average grain diameter: 250 μm) of nylon resin
Antirust function gives material B: the formed body (7mm × 7mm × 7mm) of nylon resin
Antirust function gives material C: the powder (mean particle diameter: 250 μm) of sodium soap
Antirust function gives material D: the formed body (7mm × 7mm × 7mm) of sodium soap
The centrifugal tumbling mill start stipulated time is made to grind machined object.And, select 5 machined objects taken out from roller trough, drop into the surface of 30 seconds cleaning machined objects in the tank stirring water, then pass through drying machine (Tanaka Giken Co., Ltd's system: TB-18H) with 100 DEG C of dryings.Then, the evaluation of epithelium, the evaluation of grinding and antirust evaluation is carried out.
The evaluation of epithelium carries out spectrum analysis (spectrum analysis) and surface analysis (surface analysis) (mapping (mapping)) by TOF-SIMS (ULVAC-PHI Co., Ltd. system: TRIFT 5), and have rated the kind with or without epithelium and epithelium.
In addition, the thickness of epithelium is by carrying out SiO by the value utilizing XPS (x-ray photoelectron optical spectroscopy) to measure
2convert and calculate.Concrete measuring method as described below.
Using argon ion as light source, the surface of the machined object being formed with epithelium is sputtered, and by ion that XPS analysis flies out.If be set to r by covering the sputtering raste of composition, and the time that the material covering time that composition cannot detect or machined object is detected is set to sputtering time t, is then calculated thickness that is the sputter depth d of covering composition by d=r × t.Here, when measurement sputtering raste r is not known material, general use Standard testing agent that is SiO
2sputtering raste calculate sputter depth d, and it can be used as the sputter depth of epithelium.
Sputtering raste due to the covering composition of the present embodiment is not known, so as described above, will use SiO
2the sputter depth that calculates of sputtering raste as the thickness of epithelium.
The surface roughness Ra (JIS B6001:1994 specifies) that the evaluation of grinding measures dried machined object by surface roughness meter (Tokyo Precision Co., Ltd system: Surfcom1500DX) calculates its mean value, and this value is compared with the surface roughness of rough and evaluate.
Antirust evaluation is by being positioned over the constant temperature and humidity cabinet kept in the environment of regulation by dried machined object, the generation observing rust is evaluated.Specifically, the constant temperature and humidity cabinet (nanmu originally changes into Co., Ltd.'s system: the TH403HE) environment in storehouse being remained temperature 49 DEG C, humidity 95% is positioned over via resinous pallet.Within after 72 hours every 24 hours, observe this test portion by microscope (Co., Ltd. HiROX system: KH3000), evaluated by the generation of visualization to rust 15.Metewand as described below.
Zero ... unconfirmed to rust.
Although A... observe rust, size is whole in 0.5mm.
× ... observe the rust of more than 0.5mm.
Processing conditions in embodiment 1 ~ 22 and comparative example 1,2 according to table 1 Suo Shi like that.The evaluation result of the machined object obtained by embodiment 1 ~ 22 and comparative example 1,2 is shown in Table 1." granularity " in table 1 represents the granularity being scattered in the abrasive particle of resin, and " containing ratio " represents that in the abrasive media containing resin, abrasive particle is relative to the containing ratio (quality %) of abrasive media.
[table 1]
(1) evaluation of epithelium
When using the abrasive media containing resin to grind and when loading antirust function imparting material and grinding, be all formed with the epithelium (embodiment 1 ~ 22) of 0.1nm ~ 10.0nm on the surface of machined object.On the other hand, when grinding by means of only ceramic dielectric as comparative example 1,2, epithelium is not formed with on the surface of machined object.Judge according to above result, by the grinding process of embodiment, extremely thin epithelium can be formed on the surface of machined object.
As an example of this evaluation result in the first embodiment, the analysis result of embodiment 1 shown in Figure 4.Fig. 4 (A) represents the spectrum resolution result of the anion on machined object surface.When mass-to-charge ratio (m/z) is 17,26,42,80 (zero position of this figure), detect molecular ion peak.They illustrate respectively and detect OH
-ion, CN
-ion, CNO
-ion, SO
3 2-ion.Wherein, CN
-ion and CNO
-ion is the ion produced by nylon.As the OH of other ions
-ion is the general material existed in atmosphere, SO
3 2-ion is the material coming from roller trough.Fig. 4 (B) is the result of the surface of machined object having been carried out to surface analysis (mapping).White or grey part represents the ion detected as object.Show CN as shown in the figure
-ion and CNO
-ion is present in the situation of the surface integral of machined object.Judge according to above result, if ground by the grinding process of the first embodiment, be then formed with the epithelium of resin on the surface of machined object.
In addition, as an example of this evaluation result in the second embodiment, the analysis result of embodiment 20 shown in Figure 5.Fig. 5 (A) represents the spectrum resolution result of the cation of machined object.In order to compare, the Spectroscopic analysis results of unprocessed machined object is shown at hypomere.In unprocessed machined object, when mass-to-charge ratio is 101,105,111,115,121,128 (the A position of this figure), detect molecular ion peak, but in the machined object of embodiment 20, in above-mentioned mass-to-charge ratio, do not detect the peak value of molecular ion, when mass-to-charge ratio is 104,113,117,127,129, (zero position of this figure) detects molecular ion peak.This mass-to-charge ratio indicates the composition of the sodium soap used from giving material as antirust function.The display of this result is ground by loading antirust function imparting material, thus forms the epithelium that this antirust function gives material on the surface of machined object.Fig. 5 (B) has carried out the result of surface analysis to the surface of machined object.This figure detects that mass-to-charge ratio is the ion of 127.Illustrate that this ion is present in the surface integral of machined object as shown in the figure.Judge according to above result, if carry out barreling by the grinding process of the second embodiment, then form the epithelium that antirust function gives material on the surface of machined object.
(2) evaluation of grinding
The surface roughness Ra of the machined object in SUJ2 material, SS400 material before grinding is 0.15 μm.On the other hand, when the abrasive media using abrasive particle to be scattered in resin grinds (embodiment 1 ~ 10,13 ~ 15,22), the surface roughness Ra of the machined object after grinding is 0.07 μm ~ 0.12 μm, so all can grind well in any condition.When using the abrasive media only formed by nylon resin to grind, as shown in embodiment 11,12, due to not containing abrasive particle, so grainding capacity is poorer than embodiment 1 ~ 10.But recognize that, compared with rough, surface roughness is little, therefore also can grind with the abrasive media of the type B.Judge in addition to use this abrasive media and further abrasive particle is loaded embodiment 19 grinding compared with embodiment 10 of carrying out grinding and make progress.
When using ceramic dielectric to grind (comparative example 1,2), the surface roughness Ra of the machined object after grinding is 0.29 μm and 0.3 μm.Consider this is because ceramic dielectric is harder than resin medium, stronger to the impulsive force of machined object.But, when also antirust function being given material loading roller trough and grinding, be 0.09 μm ~ 0.20 μm.Infer that this gives material by antirust function to be formed with epithelium on the surface of abrasive media, result, the lubricity of abrasive media itself improves, and impulsive force when abrasive media and machined object collide weakens.Particularly when use sodium soap gives material as antirust function, (embodiment 19 ~ 21) is 0.07 μm ~ 0.10 μm, becoming the surface roughness equal with utilizing the grinding of resin medium, therefore judging to further increase lubricity.If that is, antirust function is given material load roller trough, then can also possess abrasive media surperficial non-wetted form epithelium thus give abrasive media surface lubrication lubricity give operation.By possessing this operation, thus the finishing performance (adjustment etc. of surface roughness, shape) equal or close with it with the grinding based on resin medium can be obtained.In addition, in the grinding condition of the present embodiment, the difference of the surface roughness caused because of the difference of the material of machined object is not observed.
(3) antirust evaluation
When the machined object (rough 1,2) not carrying out barreling places 72 hours after starting to observe, produce rust, then as time goes by, rust continues to produce, and after 312 hours, observes the rust of more than 0.5mm.On the other hand, when using the abrasive media containing nylon resin to grind, as as shown in embodiment 1 ~ 12, do not observe rust, even if or observe rust, also the rust less than 0.5mm that can not impact intensity, dimensional accuracy is only observed, even if judge that time lapse also corrodes.If although make the thickness of the epithelium of resin thickening, be then difficult to produce rust, if make thickness thickening further, then easily produce rust (embodiment 9) on the contrary.Infer that this is the epithelium stripping owing to being once capped when thickness is thickening.
When using the abrasive media containing the resin except nylon resin to grind, as as shown in embodiment 13 ~ 15, although compared with the situation (embodiment 1 ~ 10) of the abrasive media used containing nylon resin, morning time that rust produces, but the evaluation being evaluated as zero or △ of rust.Even if judge, when using the abrasive media of the structure containing the resin except nylon to grind, also can give machined object antirust function.
When using ceramic dielectric to grind, as shown in comparative example 1,2,96 hours and 72 hours be × evaluate.In addition, judge easily to produce rust compared with rough.On the other hand, load is that the antirust function of main component gives situation that material carries out grinding as shown in embodiment 16 ~ 18 with nylon resin, compared with the situation (embodiment 7) of carrying out grinding with the condition identical with the abrasive media containing nylon resin, the time that rust produces early, but compared with other conditions, equal above rust-proof effect can be obtained.Excellent rust-proof effect can be obtained when particularly the form of antirust function imparting material is formed body.
Loading is that the antirust function of main component gives situation that material carries out grinding as shown in embodiment 19 ~ 21 with sodium soap, can obtain than the situation of carrying out grinding with the condition identical with the abrasive media containing nylon resin (embodiment 7) and to load with nylon resin be that the antirust function of main component gives situation (embodiment 16 ~ 18) that material carries out grinding more excellent rust-proof effect.Excellent rust-proof effect can be obtained when particularly the form of antirust function imparting material is formed body.
The situation that loading antirust function imparting material and abrasive particle carry out grinding is as shown in embodiment 22, and grinding makes progress compared with the situation (embodiment 12) of carrying out grinding by means of only identical abrasive media, and obtains excellent rust-proof effect.
In addition, the situation that machined object is SUJ2 material and SS400 material if compare, then when grinding with identical grinding condition, in qualitative evaluation shown in table 1, do not observe difference, but for SUJ2, observe rust a little and produce less trend.
Recognizing according to above result, by utilizing the abrasive media grinding machined object containing resin, antirust function can be given while grinding machined object.
In the above description, be " red rust (Fe with the rust produced at machined object
2o
3) " be illustrated as an example.But method of the present invention also suitably can be applied to and suppress by " scales (Fe
3o
4) ", nonferrous metal is as the situation of the generation of the corrosion product produced when machined object (such as in " patina " for producing when copper, at " white rust " for producing when tin, aluminium etc.).
In embodiments, although to using the grinding process of centrifugal barrel polishing device to be illustrated, utilize method of the present invention and the tumbling apparatus that uses is not limited thereto.Can be applied to and utilize the rotating disc of the bottom by making to be arranged at lapping device to rotate and " the flowing tumbling apparatus ", the so-called tumbling apparatus such as " the vibration tumbling apparatus " that make mass flow automation carry out grinding carries out by making roller trough vibrate the grinding that make mass flow automation carry out grinding.
In an embodiment, although describe the lubricity imparting operation of giving material based on antirust function for the situation of the grinding based on ceramic dielectric, for the situation of the grinding based on metal medium, also can arrange.
Although grinding process of the present invention rust-proof effect compared with the barreling of dry type is lower, the barreling of wet type also can be applied to.
Claims (11)
1. a grinding process, by the mass flow automation containing machined object and abrasive media thus with dry grinding machined object,
The feature of described grinding process is to possess:
Block loads operation, loads in operation described block is loaded roller trough at this block; And
Liquidation operation, make in this liquidation operation described block in described roller trough liquidation thus utilize described abrasive media grind machined object, and the surface of machined object formed epithelium thus give antirust function.
2. grinding process according to claim 1, is characterized in that,
In described liquidation operation, form the described epithelium that thickness is 0.1 ~ 10.0nm.
3. grinding process according to claim 1 and 2, is characterized in that,
Described abrasive media is scattered in resin by abrasive particle and forms,
In described liquidation operation, utilize described abrasive media to grind machined object, and utilize the described resin contained by described abrasive media form the epithelium of this resin on the surface of machined object thus give antirust function.
4. grinding process according to claim 3, is characterized in that,
Described resin take nylon as main component.
5. grinding process according to claim 1 and 2, is characterized in that,
The antirust function that described block also comprises as powder or formed body gives material,
In described liquidation operation, utilize described abrasive media to grind machined object, and utilize described antirust function give the epithelium of the composition of material at this antirust function of the surface of machined object formation formation imparting material thus give antirust function.
6. grinding process according to claim 5, is characterized in that,
It is that main component is formed with resin that described antirust function gives material.
7. grinding process according to claim 6, is characterized in that,
Described resin take nylon as main component.
8. grinding process according to claim 5, is characterized in that,
Described antirust function gives material with aliphatic acid or its salt for main component is formed.
9. grinding process according to claim 8, is characterized in that,
Described aliphatic acid or its salt comprise sodium soap.
10. grinding process according to claim 5, is characterized in that,
Described block also comprises abrasive particle,
In described liquidation operation, utilize described abrasive media and described abrasive finishing process machined object, and utilize described antirust function to give material at the epithelium of the surface of machined object formation as the main component of this antirust function imparting material.
11. grinding process according to claim 5, is characterized in that,
Also possess and utilize described antirust function to form epithelium with giving the surperficial non-wetted of material at abrasive media thus give the operation of the surface lubrication of described abrasive media.
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| CN105778863A (en) * | 2016-04-20 | 2016-07-20 | 廊坊市北方天宇机电技术有限公司 | Grinding fluid for aluminum wheel barreling-fishing machining and preparation method thereof |
| CN113618617A (en) * | 2021-08-16 | 2021-11-09 | 南通市纤维检验所 | Method for prolonging service life of steel ream and polishing machine |
| CN115091350A (en) * | 2022-05-06 | 2022-09-23 | 万安县泰鑫电子有限责任公司 | Quartz wafer edge chamfering device |
| CN115365987A (en) * | 2021-11-15 | 2022-11-22 | 广州市纬略实业股份有限公司 | Process for polishing workpiece physically and chemically simultaneously and application thereof |
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| JP6934653B2 (en) * | 2016-03-11 | 2021-09-15 | 株式会社チップトン | Surface treatment method for metal parts |
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Also Published As
| Publication number | Publication date |
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| JP6376465B2 (en) | 2018-08-22 |
| JP2016000450A (en) | 2016-01-07 |
| CN104669097B (en) | 2019-11-29 |
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