WO2012137713A1 - Milieu abrasif destiné au polissage au tonneau - Google Patents

Milieu abrasif destiné au polissage au tonneau Download PDF

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Publication number
WO2012137713A1
WO2012137713A1 PCT/JP2012/058872 JP2012058872W WO2012137713A1 WO 2012137713 A1 WO2012137713 A1 WO 2012137713A1 JP 2012058872 W JP2012058872 W JP 2012058872W WO 2012137713 A1 WO2012137713 A1 WO 2012137713A1
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WO
WIPO (PCT)
Prior art keywords
polishing
workpiece
barrel polishing
diameter
media
Prior art date
Application number
PCT/JP2012/058872
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English (en)
Japanese (ja)
Inventor
慎也 加島
Original Assignee
新東工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 新東工業株式会社 filed Critical 新東工業株式会社
Priority to JP2013508855A priority Critical patent/JP6496103B2/ja
Priority to CN201290000396.4U priority patent/CN203751923U/zh
Publication of WO2012137713A1 publication Critical patent/WO2012137713A1/fr
Priority to PH12013502028A priority patent/PH12013502028B1/en

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1409—Abrasive particles per se
    • 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

Definitions

  • the present invention relates to a polishing body that is charged together with a workpiece into a barrel polishing apparatus to perform barrel polishing processing such as deburring and smoothing of the workpiece.
  • barrel polishing is used to remove scales from workpieces (hereinafter referred to as “workpieces”), deburring, removing coatings, removing burrs, removing tool marks, removing processing flaws, rounding, gloss finishing, and smoothing. It has been used for processing such as finishing.
  • a workpiece and a plurality of polishing bodies (hereinafter referred to as “media”) are put into a barrel polishing tank of a barrel polishing apparatus, and the polishing tank is rotated or vibrated to bring the workpiece and media into a fluid state. Polishing is performed by collision and contact between the workpiece and the medium.
  • the medium can be appropriately selected according to the shape and material of the workpiece and the purpose of the polishing process.
  • As the material of the media ceramic, metal, resin (for example, described in Patent Documents 1 to 3), or the like is applied.
  • Barrel polishing using ceramic or metallic media can be polished with good polishing power.
  • a medium based on a resin has an advantage that it is hard to produce a hitting mark on a work because it has a lower hardness than ceramics or metal.
  • the weight is lighter than media made of ceramics or metal, the collision energy between the workpiece and the media is low, and the polishing power is low.
  • the wear resistance is low, the media wears with the polishing time, and the polishing power decreases. In particular, when the media shape changes due to wear (uneven wear) and the contact state between the workpiece and the media changes, not only the polishing power decreases, but depending on the workpiece shape, the corners of the workpiece may be The entire workpiece cannot be polished evenly.
  • the barrel polishing medium includes a resin serving as a base and abrasive grains dispersed in the resin, and the medium has a columnar shape in which one end surface forms the bottom surface of the medium.
  • Both the boundary portion between the straight body portion and the reduced diameter portion and the vertical cross section including the apex of the reduced diameter portion form a convex curve.
  • the shape of the media By making the shape of the media into a shape having a straight body portion and a reduced diameter portion, the same shape is reduced when the media wears with the lapse of the polishing time. As a result, the change in the contact state between the workpiece and the medium can be reduced, so that the same polishing state can be maintained.
  • the vertical cross section including the intersecting portion, the boundary portion, and the apex a convex curve (that is, a shape in which all corner portions are gentle curved surfaces), the workpiece is damaged when it collides with the workpiece. There is nothing.
  • a second invention is the barrel polishing medium according to the first invention, wherein the reduced diameter portion is reduced in diameter in at least two stages toward the apex.
  • the diameter-reduced portion is reduced in multiple steps toward the apex, so that the mass (work and media (including water and polishing aid (compound) in the case of wet barrel polishing) that is put into the barrel polishing tank)) flows. Therefore, polishing can be performed efficiently.
  • a third invention is the barrel polishing medium according to the first or second invention, wherein the ratio of the diameter of the bottom surface to the distance from the bottom surface to the apex is 1: 0.5 to 1: 1.5.
  • a fourth invention is the barrel polishing medium according to the first or second invention, wherein the ratio of the diameter of the bottom surface to the distance from the bottom surface to the apex is 1: 0.8 to 1: It may be 1.0 (fourth invention).
  • the length from the bottom surface to the apex from 0.5 to 1.5 times, preferably 0.8 to 1.0 times the diameter of the bottom surface, the workpiece is ground without giving a hit mark. It can be performed.
  • a fifth invention is the barrel polishing medium according to any one of the first to fourth inventions, characterized in that a diameter of the circular cross section is 1 to 40 mm. Thereby, the uneven
  • a sixth aspect of the invention is the barrel polishing medium according to any one of the first to fifth aspects, wherein the resin has a Vickers hardness of 10 to 30 HV. Thereby, it can grind
  • a seventh invention is the barrel polishing medium according to the sixth invention, wherein the abrasive grains are contained in an amount of 30 to 70% by mass with respect to the polishing medium. Thereby, the medium can obtain a sufficient polishing force.
  • An eighth invention is the barrel polishing media according to the sixth or seventh invention, wherein the mass of the media is 0.01 to 50 g and the specific gravity is 1.5 to 2.5. It is characterized by. Due to this feature, a sufficient collision energy between the workpiece and the medium can be obtained, so that the medium can obtain a sufficient polishing force.
  • the medium of the present invention can provide a medium that can be barrel-polished without giving a hitting mark to the workpiece, and has a high polishing power for a long time.
  • the media according to the present invention includes a dry barrel polishing process in which a workpiece and a medium are put into a barrel polishing tank, and polishing is performed in a fluidized state. It can be used suitably in any of wet barrel polishing processes in which a compound is added as necessary, and these are put into a fluidized state for polishing.
  • FIG. 1A is a front view
  • FIG. 1B is a view (bottom view) taken along line AA in FIG. 1A.
  • the medium 01 has a straight body portion 11 having a continuous circular cross section and a continuous diameter of the straight body portion.
  • the medium 01 is at the upper portion thereof, and the outer diameter (or side surface) of the medium 01 is continuously reduced toward the upper side.
  • Part 12 The media wears and gets smaller with the time of barrel polishing, but on average the entire media wears during wear, and if the same shape is kept smaller, the change in polishing force due to media wear is small, When so-called uneven wear occurs that the entire surface does not wear on average, the polishing force due to the change in the contact state between the workpiece and the medium greatly varies with the lapse of the polishing time.
  • Both the boundary portion 01b and the vertical cross section including the apex 01c of the reduced diameter portion 12 form a convex curve (R surface).
  • barrel polishing is performed by collision and contact between a workpiece and a medium in a barrel polishing tank. If the intersecting part 01a, the boundary part 01b, and the vertex 01c form an acute angle, when the work comes into contact with the medium, a strike mark may be formed on the surface of the work or may be damaged. In addition, when the workpiece and the medium collide, the acute angle portion becomes a base point and the medium may be damaged.
  • the diameter-reduced portion 12 is gradually reduced in diameter toward the apex as shown in FIG.
  • the reduced diameter portion 12 in FIG. 3A has a semi-elliptical vertical cross section including the apex.
  • the reduced diameter portion of FIG. 3B is abruptly inclined near the upper end after the side faces form the same inclination angle upward.
  • the inclination angle changes stepwise with the side surface upward.
  • the diameter is reduced in four stages (a to d in FIG. 2).
  • the dashed-dotted line of FIG. 2 shows the boundary of a different diameter reduction rate. Uneven wear can be further reduced by changing the reduction ratio of the reduced diameter portion 12 (that is, the inclination angle of the side surface) in at least two stages. Further, when barrel polishing is performed, the fluidity of the mass can be improved.
  • the ratio (Y / X) of the media height Y (the distance between the vertex 01c and the bottom surface 11a) to the diameter X of the bottom surface 11a is 0.5 to 1.5, more preferably 0.8 to 1.0.
  • the diameter X of the bottom surface can be appropriately selected in accordance with the dimensions of the workpiece. However, if it is selected from 1 to 40 mm, it is possible to satisfactorily polish even the corners of the workpiece having irregularities.
  • the medium 01 is composed of a resin serving as a base and abrasive grains dispersed in the resin. If the resin is too hard, hitting marks are generated on the workpiece due to the collision with the workpiece. If the resin is too soft, the resin is deformed upon collision with the workpiece and sufficient polishing force cannot be obtained. It is preferable that the hardness (Vickers hardness) of the resin is selected from a range of 10 to 30 HV in order to make it difficult for a scratch mark to be generated on the workpiece and to obtain a sufficient polishing force.
  • the resin is a thermoplastic resin (eg, nylon resin, polystyrene resin, polypropylene resin, polyamide resin, AS resin, etc.) or thermosetting resin (eg, phenol resin, unsaturated polyester resin, polyurethane resin, epoxy resin, urea). Resins, etc.) can be suitably used.
  • thermoplastic resin eg, nylon resin, polystyrene resin, polypropylene resin, polyamide resin, AS resin, etc.
  • thermosetting resin eg, phenol resin, unsaturated polyester resin, polyurethane resin, epoxy resin, urea
  • the abrasive content is selected from the range of 30 to 70% by mass with respect to the media in order to make it difficult to generate impact marks on the workpiece and to obtain a sufficient polishing force.
  • abrasive grains known materials (for example, alumina, silica, silicon carbide, iron oxide, boron oxide, zircon, chromium oxide, diamond, gold sand, and powders thereof, or moldings made from these materials) are used. It can be used suitably. Moreover, you may use the mixed powder selected 2 or more from the said material.
  • the grain size of the abrasive grains can be appropriately selected according to the type of abrasive grains, the size of the media, the properties of the workpiece, and the purpose of polishing.
  • the weight of the medium is preferably selected from the range of 0.01 to 50 g, and more preferably selected from the range of 0.02 to 40 g.
  • the specific gravity is preferably selected from the range of 1.5 to 2.5, and more preferably selected from the range of 1.8 to 2.2.
  • a centrifugal barrel polishing apparatus (EC-2 type: manufactured by Shinto Kogyo Co., Ltd.), changes in the shape of the media due to barrel polishing were examined.
  • Two types of media having the shape described in the embodiment were formed by molding a mixture in which abrasive grains were dispersed in a thermosetting resin having a Vickers hardness of 25 HV so as to be 60% by mass of the total (diameter of the bottom surface 13a).
  • Example 2 6 mm, ratio of media height Y to diameter X of bottom surface 11a (Y / X): 1.0 media (Example 1), bottom surface 11a diameter X: 6 mm, bottom surface Ratio of media height Y to diameter X of 11a (Y / X): media having a shape of 1.3 (Example 2)).
  • a medium having the following shape was formed using the mixture. The molding method was appropriately selected from known methods such as casting and extrusion molding according to the shape to be molded.
  • Comparative Example 1 A spherical medium having a diameter of 6 mm.
  • Comparative Example 2 A cubic medium having a side length of 6 mm.
  • Comparative Example 3 A square bottom having a general length of 6 mm and a rectangular parallelepiped having a length of 9 mm perpendicular to the bottom.
  • Comparative Example 4 A medium having a straight body portion and a reduced diameter portion, having a diameter X of the bottom surface 13a of 6 mm, and a ratio of the media height Y to the diameter X of the bottom surface 11a (Y / X): 0.3.
  • Comparative Example 5 A medium having a straight body portion and a reduced diameter portion, and having a diameter X of the bottom surface 13a of 6 mm and a ratio of the media height Y to the diameter X of the bottom surface 11a (Y / X): 1.7.
  • Polishing was performed for the purpose of removing a film (paint film) of a black-coated workpiece (an angle steel having a bottom surface of 10 ⁇ 10, a thickness of 2 mm, an R surface at an intersection of 1.0 mm, and a length of 10 mm).
  • the volume ratio (volume of the entire medium / volume of the entire work) is set to 5.0 so that the ratio of the medium and the work is set to 4 barrel polishing tanks each having a hexagonal cross section.
  • the barrel polishing tank was charged to 1 ⁇ 2 the volume. Thereafter, the barrel polishing tank was placed on the centrifugal barrel polishing apparatus, and the barrel polishing tank was operated for 0.5 hours at a rotation speed of 200 rpm and a revolution speed of 200 rpm.
  • the barrel polishing tank was removed from the centrifugal barrel polishing apparatus, the workpiece was taken out from the barrel polishing tank, and the same amount of work was put into the barrel polishing tank, followed by polishing similarly.
  • the polishing process was performed 70 times, and “media shape”, “work impact mark”, “work finish”, and “polishing power” in the first polishing and the 70th polishing were evaluated. .
  • Media shape Visually the same as the initial shape ⁇ (when the size may be different), ⁇ if slight change is observed, ⁇ if significantly different from the initial shape It was.
  • Blow mark of workpiece “B” when no hit mark is visually observed, and “X” when a hit mark is observed.
  • Finishing of work When the film of the corner portion of the L-shaped part of the work was removed visually, it was evaluated as ⁇ , and when the film of the corner portion was not removed, it was marked as x. Polishing power: The change in weight before and after polishing was measured.
  • the media according to the present invention is free from uneven wear of the media and a decrease in the polishing amount with the lapse of the polishing time, and can perform barrel polishing well even at the corners of the workpiece.
  • Media shape The shape of the media after 70 polishing operations was smaller in Example 1, Example 2 and Comparative Example 1 than in the initial state, but no significant change was observed in the shape.
  • Example 2 was close to a sphere, and Comparative Example 3 was close to an ellipsoid.
  • the ratio of the diameter X to the height Y (Y / X) was changed to about 0.5 and about 1.4, respectively.
  • Striking marks on the workpiece Neither of the media was able to confirm the scratching marks on the workpiece in barrel polishing with any media. Finishing of workpiece: In Examples 1 and 2, the machining of the corner portion of the workpiece was completed even in the first and 70th barrel polishing. In Comparative Example 1, processing of the corner portion of the workpiece was not completed in any barrel polishing, and in Comparative Examples 2 to 5, processing of the corner portion of the workpiece was completed in the first barrel polishing. However, it is understood that the machining of the corner portion of the workpiece is not completed in the 70th polishing, and the contact with the corner portion of the workpiece becomes insufficient due to the uneven wear of the media.
  • Polishing power In barrel polishing with media (Comparative Examples 2 to 5) whose shape changes due to polishing, the surface roughness of the workpiece after the 70th polishing is significantly larger than that after the first polishing. Thus, it can be seen that the polishing force is reduced by the change in shape due to uneven wear. Moreover, although the workpiece
  • the surface roughness of the workpiece polished by the media of Example 1 and Example 2 is significantly smaller than that before polishing, and the surface roughness of the workpiece after the first polishing and after the 70th polishing. From this, it can be seen that good polishing power is maintained for a long time.
  • the media of Example 1 is more preferable than the media with Example 2 because the difference between the first polishing and the 70th polishing is smaller.
  • the barrel polishing media of the present invention can be suitably used for both dry barrel polishing and wet barrel polishing. Moreover, it can be suitably used not only for centrifugal barrel polishing described in the embodiments but also for polishing by a known barrel polishing apparatus such as a vibration barrel polishing apparatus, a fluidized barrel polishing apparatus, and a rotary barrel polishing apparatus.
  • a known barrel polishing apparatus such as a vibration barrel polishing apparatus, a fluidized barrel polishing apparatus, and a rotary barrel polishing apparatus.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

[Problème] Fournir un milieu abrasif destiné au polissage au tonneau qui ne provoque pas de marques de coups sur un objet cible (pièce à travailler) après être entré en contact avec la pièce à travailler et dont l'état de contact avec la pièce à travailler ne varie pas fortement au cours d'un processus de polissage. [Solution] Le milieu abrasif est formé d'un mélange préparé en dispersant des particules dans une base de résine. Le milieu abrasif a une forme granulaire formée par : une partie de corps linéaire cylindrique comportant une surface extrême en tant que surface inférieure ; et une partie à réduction de diamètre s'étendant à partir de l'autre surface extrême de la partie de corps linéaire avec un diamètre se réduisant de façon continue, une intersection entre la surface inférieure et une surface latérale de la partie de corps linéaire, une limite entre la partie de corps linéaire et la partie à réduction de diamètre, une section verticale de la partie de réduction de diamètre comprenant le sommet de la partie à réduction de diamètre étant convexes.
PCT/JP2012/058872 2011-04-06 2012-04-02 Milieu abrasif destiné au polissage au tonneau WO2012137713A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013508855A JP6496103B2 (ja) 2011-04-06 2012-04-02 バレル研磨用研磨体
CN201290000396.4U CN203751923U (zh) 2011-04-06 2012-04-02 用于鼓式抛光的抛光介质
PH12013502028A PH12013502028B1 (en) 2011-04-06 2013-09-30 Abrasive medium for barrel polishing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-084231 2011-04-06
JP2011084231 2011-04-06

Publications (1)

Publication Number Publication Date
WO2012137713A1 true WO2012137713A1 (fr) 2012-10-11

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PCT/JP2012/058872 WO2012137713A1 (fr) 2011-04-06 2012-04-02 Milieu abrasif destiné au polissage au tonneau

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JP (1) JP6496103B2 (fr)
CN (1) CN203751923U (fr)
PH (1) PH12013502028B1 (fr)
TW (1) TWI648128B (fr)
WO (1) WO2012137713A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015160896A (ja) * 2014-02-27 2015-09-07 株式会社アライドマテリアル マウント材およびそれを用いたワークの加工方法ならびに平面加工用マウント体
JP2016036852A (ja) * 2014-08-05 2016-03-22 株式会社不二Ｗｐｃ 微小ディンプル形成方法及び該形成方法により形成された微小ディンプルを備えた部材

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108148506B (zh) * 2017-11-27 2020-08-18 东莞富兰地工具股份有限公司 抛光介质及其制备方法与应用

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4652469A (en) * 1983-07-01 1987-03-24 Carl Kurt Walther Gmbh & Co. Kg Smoothing of articles of wood in vibratory abrasive finishing machines and abrasive bodies particularly therefor
US4712333A (en) * 1986-01-23 1987-12-15 Huck Manufacturing Company Tumbling media
US4765100A (en) * 1987-05-13 1988-08-23 Cookeville Uniform Rental, Inc. Method of abrading new garments

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
GB191229418A (en) * 1910-08-06 1913-02-13 Wenger & Cie Process and Apparatus for Polishing Silver Articles.
GB1480096A (en) * 1974-08-29 1977-07-20 Ceratex Eng Ltd Plastics abrasive media
JPS57194871A (en) * 1981-05-26 1982-11-30 Nippon Kokan Kk <Nkk> Beveling and smoothing device of media for barrel polishing
DE3812491A1 (de) * 1988-04-15 1989-10-26 Walther Carl Kurt Gmbh Schleifkoerper fuer das gleitschleifverfahren
IT1252328B (it) * 1991-07-18 1995-06-08 Rollwasch Italiana Spa Dispositivo abradente agglomerato particolarmente per burattatura e simili nonche' procedimento realizzativo.
DE102006047442B3 (de) * 2006-09-20 2008-04-10 Walther Trowal Gmbh & Co. Kg Gleitschleifkörper

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4652469A (en) * 1983-07-01 1987-03-24 Carl Kurt Walther Gmbh & Co. Kg Smoothing of articles of wood in vibratory abrasive finishing machines and abrasive bodies particularly therefor
US4712333A (en) * 1986-01-23 1987-12-15 Huck Manufacturing Company Tumbling media
US4765100A (en) * 1987-05-13 1988-08-23 Cookeville Uniform Rental, Inc. Method of abrading new garments

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015160896A (ja) * 2014-02-27 2015-09-07 株式会社アライドマテリアル マウント材およびそれを用いたワークの加工方法ならびに平面加工用マウント体
JP2016036852A (ja) * 2014-08-05 2016-03-22 株式会社不二Ｗｐｃ 微小ディンプル形成方法及び該形成方法により形成された微小ディンプルを備えた部材

Also Published As

Publication number Publication date
JPWO2012137713A1 (ja) 2014-07-28
JP6496103B2 (ja) 2019-04-03
CN203751923U (zh) 2014-08-06
TW201242720A (en) 2012-11-01
PH12013502028B1 (en) 2013-12-16
TWI648128B (zh) 2019-01-21

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