WO2015156033A1 - Procédé de polissage au tonneau à sec, et procédé de fabrication de milieu - Google Patents

Procédé de polissage au tonneau à sec, et procédé de fabrication de milieu Download PDF

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Publication number
WO2015156033A1
WO2015156033A1 PCT/JP2015/054317 JP2015054317W WO2015156033A1 WO 2015156033 A1 WO2015156033 A1 WO 2015156033A1 JP 2015054317 W JP2015054317 W JP 2015054317W WO 2015156033 A1 WO2015156033 A1 WO 2015156033A1
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WIPO (PCT)
Prior art keywords
medium
media
workpiece
lubricity
barrel polishing
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PCT/JP2015/054317
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English (en)
Japanese (ja)
Inventor
陽一郎 平塚
末菅　啓朗
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新東工業株式会社
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Application filed by 新東工業株式会社 filed Critical 新東工業株式会社
Priority to JP2016512620A priority Critical patent/JP6414206B2/ja
Priority to CN201580010935.0A priority patent/CN106029298A/zh
Publication of WO2015156033A1 publication Critical patent/WO2015156033A1/fr

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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

Definitions

  • One aspect and embodiments of the present invention relate to a dry barrel polishing method and a method of manufacturing a medium applied to the method.
  • a barrel polishing method in which a workpiece and a medium are charged into a polishing tank of a barrel polishing apparatus and mixed and fluidized to polish the surface of the workpiece with the medium (for example, Patent Document 1). reference).
  • Such barrel polishing methods include a wet barrel polishing method in which water is put into a polishing tank and a dry barrel polishing method in which water is not put in the polishing tank.
  • the wet barrel polishing method is widely used for the purpose of gloss finishing of a workpiece or smooth finishing of a workpiece, there is a problem that waste water treatment is required after polishing. For this reason, a dry barrel polishing method may be employed.
  • One aspect of the present invention is a dry barrel polishing method capable of ensuring finishing performance equivalent to or close to a wet barrel polishing method in adjusting surface roughness or shape, and a method for producing a medium applied to the method Is the purpose.
  • a dry barrel polishing method is a dry barrel polishing method in which a workpiece is dry-barrel-polished, and a non-lubricating material is coated on the surface of a medium used in barrel-polishing.
  • a first step of forming a wet coating portion to impart lubricity to the surface of the media a second step of mixing the media and the workpiece in a polishing tank; and the media and the workpiece.
  • a third step of polishing the workpiece by causing the material to flow in the polishing tank.
  • non-wetting refers to a state where the surface of the media is not wetted with oil or the like. Note that one aspect of the present invention includes both the case where the first step, the second step and the third step are individually performed, and the case where at least two steps are simultaneously performed.
  • the medium and the workpiece may be flowed while supplying the lubricity-imparting material into the polishing tank in the third step.
  • the surface of the media is coated with the newly-provided lubricity-imparting material. Therefore, the effect of suppressing the surface of the workpiece from becoming unnecessarily rough is maintained.
  • the workpiece is also coated with the lubricity-imparting material. However, the surface of the work piece is gradually polished by polishing the surface of the work piece before or after being coated with media.
  • the lubricity-imparting material may include a fatty acid or a salt thereof.
  • the lubricity-imparting material contains a fatty acid or a salt thereof, the cost can be reduced and lubricity can be imparted to the surface of the media.
  • the fatty acid or its salt contains sodium fatty acid, good lubricity can be imparted at low cost.
  • fatty acid sodium is used as the main component of the lubricity-imparting material, the oil and fat hardly adhere to the workpiece, so that the cleaning process can be made unnecessary or simplified.
  • the medium may be an inorganic medium, and may include a holding unit that holds the lubricity-imparting material on the surface.
  • Inorganic media fired media, sintered media
  • organic media refin media
  • the impact force on the workpiece is strong.
  • the adhesion force of the lubricity-imparting material to the medium becomes strong. For this reason, compared with the case where there is no holding
  • the holding part may be formed by forming the medium into a porous body.
  • the specific gravity of the media is lowered, so that the impact force of the media on the workpiece is reduced.
  • the surface of the workpiece can be prevented from becoming unnecessarily rough. Therefore, the finishing performance equivalent to or close to that of the wet barrel polishing method can be ensured by the synergistic effect of the effect of the lubricity imparting material and the effect of the porosity.
  • the form of bubbles in the porous medium described above may be either a closed cell structure or an open cell structure.
  • the media comprises 60-80 wt% aluminum oxide (Al 2 O 3 ), 10-30 wt% silicon dioxide (SiO 2 ), 4-8 wt% zirconium oxide (ZrO 2). ), 1 to 3% by mass of calcium oxide (CaO), and 1 to 4% by mass of magnesium oxide (MgO).
  • the strength of porous media is lower than that of media that are not porous, such as cracks starting from pores during barrel polishing.
  • the strength of porous media is lower than that of media that are not porous, such as cracks starting from pores during barrel polishing.
  • by including 1 to 4% by mass of magnesium oxide it is possible to prevent an unnecessary decrease in strength of the entire medium.
  • the media having this configuration is a sintered media, it has a longer life than the fired media.
  • a method for producing a medium used in a dry barrel polishing method is a method for producing the medium, and a kneading step of kneading abrasive grains, a binder, magnesium oxide, and a disappearing material powder.
  • the amount of the disappearing material powder added is 1 to 40% by mass when the total of the abrasive grains, the binder, the magnesium oxide and the disappearing material powder is 100% by mass.
  • a sintered medium having a holding portion formed on the surface by the pores can be obtained.
  • water may be added as necessary.
  • the vanishing material powder may be aluminum hydroxide powder.
  • the aluminum hydroxide is dehydrated and decomposed in the sintering process.
  • the aluminum hydroxide is changed to aluminum oxide and its volume is reduced as a solid content, and the hydroxyl group is emitted as water vapor. Since the aluminum hydroxide powder is dispersed in the molded body, a porous body is formed in the above-described sintering step.
  • At least one of manganese oxide (MnO) and iron oxide (Fe 2 O 3 ) is added to a mixed material composed of the abrasive grains, the binder, the magnesium oxide, and the disappearing material powder.
  • at least one of the mixed materials that is, one when either manganese oxide or iron oxide is added, or both when both manganese oxide and iron oxide are added
  • the total of 100 mass% at least one of them (ie, when either manganese oxide or iron oxide is added, while when both manganese oxide and iron oxide are added, both ) Content may be 5% by mass or less.
  • At least one of the added components effectively functions as a sintering aid in the sintering process.
  • FIG. 3A shows the result of spectrum analysis
  • FIG. 3B shows the result of surface analysis.
  • FIG. 1 schematically shows a dry barrel polishing apparatus 10 applied to the dry barrel polishing method according to this embodiment.
  • the dry barrel polishing apparatus 10 will be outlined.
  • the dry barrel polishing apparatus 10 (hereinafter simply referred to as “barrel polishing apparatus 10”) includes a barrel tank 12 as a polishing tank.
  • the barrel tank 12 has a container shape and is fixed to a pedestal (not shown).
  • a lining 14 is fixed to the inner surface of the barrel tank 12.
  • the barrel tank 12 is charged with a polishing medium 40, a workpiece W, and the like (generally called “mass”). In the drawing, the medium 40 and the workpiece W are schematically shown.
  • the dust collector 16 includes a fan (not shown) that sucks air in the dust collection hose 20 and a filter (not shown) for preventing the dust from being discharged.
  • a dust collection hood 18 is disposed on the upper side of the barrel tank 12 as necessary.
  • One end of a dust collection hose 20 ⁇ / b> A is connected to the dust collection hood 18.
  • the other end of the dust collection hose 20 ⁇ / b> A is connected to the other end side of the dust collection hose 20.
  • a turntable 22 is disposed on the upper surface side of the bottom of the barrel tank 12.
  • the central portion of the rotary disk 22 is fixed to the rotary shaft 24 with the shaft mounting portion.
  • a bearing portion 26 is provided at the bottom of the barrel tank 12.
  • a rotating shaft 24 fixed to the rotating disk 22 is rotatably supported by a bearing portion 26 of the barrel tank 12. The lower end of the rotating shaft 24 is connected to the driving force transmission mechanism 28 on the bottom lower side of the barrel tank 12.
  • the driving force transmission mechanism 28 includes a pair of pulleys 30 and 32 and a V belt 34 wound around the pair of pulleys 30 and 32.
  • the rotary shaft 24 described above is fixed coaxially to the axial center of one pulley 30.
  • the output shaft of the motor 36 with a speed reducer is fixed coaxially to the axial center of the other pulley 32.
  • the barrel polishing apparatus 10 causes the mass to flow in the barrel tank 12 by rotating the rotating plate 22 by driving the motor 36.
  • a barrel polishing method is called a fluid barrel.
  • the medium 40 is a small particle formed in an arbitrary shape such as a spherical shape, a triangular pyramid shape, a triangular prism shape, a cylindrical shape, a circularly cut shape of a circular cylinder, or a quadrangular prism shape. Is the body.
  • the medium 40 of the present embodiment has a triangular prism shape with a height of 6 mm. The medium 40 flows together with the workpiece W in the barrel tank 12 and polishes the workpiece W by the frictional force generated between the media 40 and the workpiece W.
  • FIG. 2 shows a schematic cross-sectional view in which the surface side of the medium 40 is enlarged.
  • a polishing medium 40 shown in FIG. 2 is an inorganic medium.
  • an inorganic medium for example, a sintered body medium (baked medium) obtained by firing a mixture of abrasive grains and a clay material, and a sintered body medium formed by sintering abrasive grains (fired media) Sintered media).
  • inorganic media is less expensive than organic media (resin media formed by mixing a resin and an abrasive).
  • organic media reactive media formed by mixing a resin and an abrasive
  • the medium 40 is a porous body (the whole is porous), the specific gravity of the medium 40 is reduced by the pores, and thus the collision energy of the medium 40 against the workpiece W is reduced.
  • the impact force of the medium 40 on the workpiece W is reduced, it is possible to suppress the surface of the workpiece W from becoming unnecessarily rough.
  • a buffering effect by pores formed in the vicinity of the surface of the medium 40 can be expected.
  • sintered media have a lower wear rate and longer life compared to sintered media. In this embodiment, a sintered medium is selected.
  • a concave holding portion 42 for holding and inserting a lubricity imparting material 44 described later is formed on the surface of the medium 40.
  • the holding portion 42 holds the lubricity imparting material 44 firmly to the medium 40. That is, the adhesion of the lubricity imparting material 44 to the medium 40 is increased.
  • the holding portion 42 may be formed by providing a groove, may be formed by providing dimples, or may be formed by providing irregularities.
  • the holding part 42 is formed of irregularities formed on the surface of the medium 40 by the pores of the medium 40 that is a porous body.
  • the medium 40 by making the medium 40 a porous body, it is possible to obtain both the effects of suppressing the impact force described above and the effect of firmly holding the lubricity-imparting material 44. Therefore, it is possible to prevent the surface of the workpiece W from being roughed more than necessary.
  • Lubricating material 44 contains almost no oil or fat.
  • the oil and fat content of the lubricity imparting material 44 may be 0.5 mass% or less. Since the lubricity imparting material 44 is substantially free of oils and fats, when the lubricity imparting material 44 is coated on the surface of the media 40, the surface of the media 40 is lubricated without being wetted. Can be granted.
  • the lubricity imparting material 44 in the present embodiment is composed of fatty acid sodium and some inevitable impurities.
  • Examples of the fatty acid in the fatty acid sodium include tangle acid, caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, valmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, and ricinolenic acid.
  • the fatty acid may be a single type of fatty acid or a mixture containing two or more types of fatty acids.
  • the lubricity imparting material 44 may contain a fatty acid instead of or together with the fatty acid sodium.
  • the fatty acid include lauric acid and oleic acid.
  • the lubricity-imparting material 44 may contain other fatty acid metal salts such as fatty acid magnesium, fatty acid calcium, or fatty acid potassium, for example, instead of or together with fatty acid sodium.
  • the medium 40 includes at least 60 to 80% by mass of aluminum oxide, 10 to 30% by mass of silicon dioxide, 4 to 8% by mass of zirconium oxide, and 1 to 3% by mass of calcium oxide.
  • Some inevitable impurities for example, K 2 O, TiO 2 , Na 2 O, HfO 2, P 2 O 3, etc. may be included. Inevitable impurities may be 3% or less (or 2% or less).
  • the strength of the entire medium 40 is reduced by making the entire medium 40 porous.
  • the media 40 may be cracked or chipped from the pores due to impact caused by barrel polishing. Therefore, by further including magnesium oxide as a reinforcing material, even if the medium 40 is made porous, the strength of the medium 40 can be improved to the extent that the medium 40 is not cracked or chipped during barrel polishing.
  • the content of magnesium oxide may be 1 to 4% by mass (or 2 to 3% by mass). In this case, it has been confirmed by experiments that the above-described effects can be obtained.
  • a kneading step is performed.
  • abrasive grains, a binder, magnesium oxide as a reinforcing material, and aluminum hydroxide powder as a disappearing material powder are weighed so as to have a predetermined content and then kneaded (collectively, these materials Hereinafter referred to as “mixed material a”).
  • water may be added as necessary.
  • the addition amount of the aluminum hydroxide powder is 1 to 40% by mass when the mixed material a is 100% by mass.
  • alumina-based abrasive grains alundum
  • silicon carbide-based abrasive grains carbborundum
  • zirconia alumina abrasive grains diamond abrasive grains, or CBN abrasive grains
  • CBN abrasive grains white alumina-based abrasive grains (WA) are used as the abrasive grains, high polishing power can be obtained at a low price, and the color of the abrasive grains is not transferred to the workpiece, which is preferable.
  • the average particle diameter of the abrasive grains is appropriately selected according to the purpose of polishing. For example, when the purpose is fine polishing, it is selected from the range of 1 to 40 ⁇ m.
  • the polishing power of the media is lowered.
  • the particle diameter of the abrasive grains is too large, the bonding force between the particles is weak and the strength of the media is lowered.
  • the binder is a binding material for bonding the abrasive grains during sintering.
  • the binder is appropriately selected depending on the type of abrasive grains or the sintering temperature.
  • the binder includes at least silicon dioxide, zirconium oxide, and calcium oxide.
  • magnesium oxide when magnesium oxide is contained in a binder, the said magnesium oxide can be utilized as a reinforcing material.
  • a sintering aid is added to the mixed material a.
  • the sintering aid can be at least one of manganese oxide and iron oxide (that is, either one or both).
  • the addition amount of the sintering aid is 5% by mass or less when the total of the mixed material a and the sintering aid is 100% by mass (when a plurality of materials are used as the sintering aid, The total is 5 mass% or less).
  • the kneaded material kneaded in the kneading step is put into an extrusion molding machine and molded into a predetermined shape (triangular prism shape in this embodiment).
  • the molded body molded in the molding step is placed in a heat-resistant container in a dried state and sintered in a furnace at a predetermined temperature for a predetermined time.
  • the aluminum hydroxide is dehydrated and decomposed.
  • the volume is changed to aluminum oxide and the volume is reduced as a solid content, and the hydroxyl group is emitted as water vapor. That is, in this step, aluminum hydroxide is lost.
  • the aluminum hydroxide is uniformly dispersed in the mixed material a. Accordingly, a porous medium having a closed cell structure is formed by this sintering step, and a sintered medium 40 having a holding portion 42 formed on the surface is obtained.
  • the content ratio of the aluminum hydroxide powder may be as described above.
  • at least one of manganese oxide and iron oxide added in the kneading step effectively functions as a sintering aid.
  • the medium 40 and the lubricity-imparting material (not shown in FIG. 1) are charged into the barrel tank 12 of the barrel polishing apparatus 10 shown in FIG.
  • the dust collector 16 connected to the barrel polishing apparatus 10 is operated.
  • the barrel polishing apparatus 10 is operated to cause the medium 40 and the lubricity-imparting material (not shown in FIG. 1) to flow in the barrel tank 12.
  • the surface of the polishing medium 40 is coated with the lubricity imparting material 44 containing almost no oil or fat.
  • a non-wetting coating portion 44C is formed on the surface of the medium 40 to impart lubricity to the surface of the medium 40 (first step).
  • the lubricity imparting material 44 is coated on the surface of the medium 40 by mixing and flowing a powdery material having a particle size of about 5 to 800 ⁇ m (but not limited to this size) with the medium 40.
  • the main component of the lubricity imparting material 44 is sodium fatty acid. Therefore, the cost of the lubricity imparting material 44 can be reduced and lubricity can be imparted to the surface of the medium 40.
  • the lubricity imparting material 44 is coated on the surface of the medium 40 by mixing, for example, a cube-shaped material (for example, a cube shape of 10 mm ⁇ 10 mm ⁇ 10 mm to 70 mm ⁇ 70 mm ⁇ 70 mm) with the medium 40 and flowing. May be.
  • the lubricity imparting material 44 may be coated on the surface of the medium 40 by, for example, mixing a liquid (for example, a concentration of 10 vol%) with the medium 40 and solidifying it while flowing.
  • a liquid material for example, a concentration of 10 vol%) with the medium 40 and solidifying it while flowing.
  • the barrel polishing apparatus 10 shown in FIG. 1 After the barrel polishing apparatus 10 shown in FIG. 1 is operated, the barrel polishing apparatus 10 is stopped after a predetermined time has elapsed. Next, the workpiece W is charged into the barrel tank 12 of the barrel polishing apparatus 10, and the media 40 and the workpiece W are mixed in the barrel tank 12 (second step).
  • the barrel polishing apparatus 10 is operated, and the medium 40 whose surface is coated with the lubricity imparting material 44 (see FIG. 2) and the workpiece W are caused to flow in the barrel tank 12.
  • the workpiece W is polished by bringing the medium 40 into sliding contact with the workpiece W by this flow (third step).
  • the fluidity (sliding performance) of the medium 40 is improved by the lubricity imparting material 44, an excessive polishing load due to the collision of the medium 40 is not imparted to the workpiece W.
  • the impact force when colliding with the workpiece W is buffered by the pores of the medium 40, excessive polishing force due to the collision of the media 40 is not applied to the workpiece W.
  • the medium 40 roughens the surface of the workpiece W more than necessary, and polishing for reducing the surface roughness of the workpiece W can be performed. That is, the surface of the workpiece W is processed into a smooth polished surface.
  • the porous medium 40 includes the holding portion 42 on the entire surface, so that the adhesion of the lubricity-imparting material 44 to the medium 40 is increased.
  • the media 40 can hold the lubricity-imparting material 44 for a long time compared with the case where the holding portion 42 is not provided, the effect of suppressing the surface of the workpiece W from being roughened more than necessary. Can last longer. For this reason, the performance of the lubricity imparting material 44 can be sufficiently exhibited.
  • this step by operating a supply device (not shown) of the lubricity-imparting material 44, the medium 40 and the workpiece are supplied while supplying the lubricity-imparting material 44 into the barrel tank 12. Let W flow. For this reason, even if the lubricity-imparting material 44 is gradually scraped off from the medium 40 by the collision with the workpiece W, the surface of the medium 40 is coated with the newly-provided lubricity-imparting material 44. Therefore, the effect of suppressing the surface of the workpiece W from being roughed more than necessary is maintained. It should be noted that the work piece W is about to be coated with the lubricity imparting material 44. However, the surface of the workpiece W before or after being coated is polished with the medium 40 so that the surface of the workpiece W is gradually polished.
  • the operation of the supply device for the lubricity imparting material 44 is stopped, then the operation of the barrel polishing apparatus 10 is stopped, and then the operation of the dust collector 16 is stopped. Then, the medium 40 and the workpiece W are discharged from the barrel tank 12 of the barrel polishing apparatus 10, and these are separated to collect the workpiece W.
  • the oil or fat adheres to the workpiece, and thus a cleaning step is required.
  • the surface of the medium 40 is coated with the lubricity imparting material 44 containing almost no oil and fat to form the non-wetting coating portion 44C. For this reason, fats and oils hardly adhere to the workpiece W. As a result, there is an advantage that the cleaning process can be eliminated or simplified.
  • Table 1 shows the test results confirming the fluidity of the media.
  • the numerical value in the table is the angle of repose of the measured media.
  • Examples 1 to 10 the case where the surface of the media was coated with fatty acid sodium (lubricant imparting material) was used as an example (Examples 1 to 10), and the case where the surface of the media was not coated was used as a comparative example (Comparative Examples 1 to 5).
  • polishes a workpiece was performed by making it flow in the state mixed with the workpiece in the tank (polishing tank).
  • Polishing (barrel polishing) conditions are as shown in Table 2 below.
  • one workpiece for measurement ⁇ 45mm ⁇ t15mm S45C material (carbon steel for mechanical structure: JIS (Japanese Industrial Standards))
  • 12L apparent volume
  • dummy workpiece (30 mm ⁇ 30 mm ⁇ t 3 mm SS400 material (general structural rolled steel: JIS)
  • Media A and media C are media formed by sintering abrasive grains.
  • Media B and media D are media formed by sintering abrasive grains and a clay material.
  • the medium E is a medium formed by mixing a resin and an abrasive.
  • Table 3 below shows the results of measuring the conditions of Examples 1 to 9 and Comparative Examples 1 to 5, and the surface roughness, polishing amount, and wear rate.
  • the item “media” indicates which of the media in Table 2
  • the item “method” indicates whether the method is a dry barrel polishing method or a wet barrel polishing method. .
  • 11 L of water was put in the polishing tank, and 50 ml of polishing aid (compound) was added.
  • the item of “input of fatty acid sodium” indicates whether the process of coating the surface of the media with sodium fatty acid as a lubricity-imparting material is “present” or “absent”.
  • it indicates in parentheses whether the powder is in a powder, solid, or liquid state.
  • FIG. 3A shows the result of spectral analysis of Example 3
  • FIG. 3B shows the result of surface analysis of the media surfaces of Example 3 and Comparative Example 1.
  • the media of Example 3 the presence of sodium fatty acid was confirmed since ions (sodium ions) derived from fatty acid sodium were detected in FIG.
  • the other peak in the figure shows the component derived from a medium.
  • FIG. 3B shows that fatty acid sodium is distributed over the entire surface of the media. In other words, it was shown that when sodium fatty acid was added during barrel polishing, the entire surface of the media was coated with sodium fatty acid.
  • the item of “Al (OH) 3 ” indicates whether or not aluminum hydroxide powder is added in the kneading step when manufacturing the media.
  • the ratio of the added amount is shown in parentheses.
  • the ratio of the amount of aluminum hydroxide added indicated in parentheses is mass% when the mixed material (mixed material a in the embodiment described above) is 100 mass%.
  • Al (OH) 3 is added, the medium becomes a porous body.
  • Al (OH) 3 is not added, the medium does not become a porous body and the surface has a relatively smooth surface. It becomes.
  • the item “number of batches” indicates how many times the polishing is performed by the same medium.
  • the workpiece is taken out, after which a new workpiece is inserted and the second polishing is performed with the same media.
  • the polishing and the removal and charging of the workpiece are repeated.
  • the example in which the number of batches is 1 in the table indicates the measurement result of the workpiece taken out after the first polishing
  • the example in which the number of batches is 10 in the table (Example 9) is The measurement result of the workpiece taken out after the 10th polishing is shown.
  • surface roughness is the surface roughness Ra (JIS B6001; 1994) of the surface of the workpiece with a surface shape roughness measuring machine (manufactured by Tokyo Seimitsu Co., Ltd .; Surfcom 1500DX). It is the result of having measured.
  • the unit of “surface roughness” is ⁇ m.
  • the “polishing amount” is determined by measuring “mass of workpiece before processing” and “mass of workpiece after processing” with an electronic balance (manufactured by Shimadzu Corporation; IPS-DP10), and the difference It is the result of converting and evaluating per unit time.
  • the unit of “polishing amount” is mg / h.
  • the “wear rate” is obtained by measuring “mass of media before processing (for measurement)” and “mass of media after processing (for measurement)” with the above-described electronic balance. This is the calculated result.
  • the unit of “wear rate” is% / h.
  • the workpiece may be polished by fluidizing the mass by planetary rotation or vibration of the polishing tank.
  • the types of barrel polishing include, for example, what are called a centrifugal barrel, a vibration barrel, a rotary barrel, a gyro barrel, and the like.
  • the polishing media, the workpiece, and the lubricity-imparting material are mixed in the polishing tank (second step), and these masses are allowed to flow in the polishing tank.
  • the surface of the media is coated with a lubricity-imparting material.
  • a non-wetting coating portion is formed to provide lubricity to the surface of the media (first step), and the workpiece is polished by flowing the media and the workpiece in a polishing tank ( (Third step) may be adopted.
  • the medium 40 and the workpiece W are caused to flow while supplying the lubricity-imparting material into the barrel tank 12 by a supply device (not shown).
  • the lubricity-imparting material may be preliminarily charged into the barrel tank 12 by an amount required additionally.
  • the composition of the sintered media may be, for example, 60 to 80% by mass of aluminum oxide and 10 to 30% by mass.
  • the disappearing material powder may be other disappearing material powder such as a foamed polystyrene resin powder or a graphite powder.
  • impurities for example, carbon
  • this impurity is the strength of the media. There is a possibility that it will contribute to the reduction (occurrence of cracks).
  • SYMBOLS 12 Barrel tank (polishing tank), 40 ... Media, 42 ... Holding part, 44 ... Lubricity imparting material, 44C ... Coating part, W ... Workpiece.

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  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Selon l'invention, lors d'une première étape, un matériau (44) conférant des propriétés lubrifiantes revêt la surface d'un milieu (40) destiné au polissage, ainsi une partie revêtement (44C) non humide est formée, et des propriétés lubrifiantes sont conférées à la surface de ce milieu (40). Lors d'une seconde étape, le milieu (40) et une pièce à usiner (W) sont mélangés à l'intérieur d'un tonneau (12). Lors d'une troisième étape, du fait du mouvement en flux du milieu (40) et de la pièce à usiner (W) à l'intérieur d'un tonneau (12), la pièce à usiner (W) est polie.
PCT/JP2015/054317 2014-04-07 2015-02-17 Procédé de polissage au tonneau à sec, et procédé de fabrication de milieu WO2015156033A1 (fr)

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Application Number Priority Date Filing Date Title
JP2016512620A JP6414206B2 (ja) 2014-04-07 2015-02-17 乾式バレル研磨方法及びメディアの製造方法
CN201580010935.0A CN106029298A (zh) 2014-04-07 2015-02-17 干式滚筒研磨法以及介质的制造方法

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JP2014078918 2014-04-07
JP2014-078918 2014-04-07

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WO2019065253A1 (fr) * 2017-09-28 2019-04-04 新東工業株式会社 Dispositif de polissage à tambour rotatif sec, système de polissage à tambour rotatif à sec, et procédé de polissage à tambour rotatif sec
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WO2019065253A1 (fr) * 2017-09-28 2019-04-04 新東工業株式会社 Dispositif de polissage à tambour rotatif sec, système de polissage à tambour rotatif à sec, et procédé de polissage à tambour rotatif sec
JPWO2019065253A1 (ja) * 2017-09-28 2020-10-01 新東工業株式会社 乾式回転バレル研磨装置、乾式回転バレル研磨システム及び乾式回転バレル研磨方法
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JP6414206B2 (ja) 2018-10-31

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