US3805457A - Method of attaching labels on rotary abrasive discs - Google Patents

Method of attaching labels on rotary abrasive discs Download PDF

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Publication number
US3805457A
US3805457A US00147044A US14704471A US3805457A US 3805457 A US3805457 A US 3805457A US 00147044 A US00147044 A US 00147044A US 14704471 A US14704471 A US 14704471A US 3805457 A US3805457 A US 3805457A
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United States
Prior art keywords
label
grindstone
mold
wheel
rotary abrasive
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Expired - Lifetime
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US00147044A
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English (en)
Inventor
Y Shimizu
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for

Definitions

  • the method includes positioning a label of material capable of withstanding the heating temperature along either surface of the grindstone material placed in the mold,- prior to the compression molding step, and subsequently subjecting the label together with the grindstone material to compression in the direction of thickness thereof.
  • the invention relates to a method of presenting letters, characters or the like on a rotary abrasive wheel, and more particularly to a method for attaching a label or similar material to a rotary abrasive disc that is used for metal cutting and other purposes.
  • detachment of the label may result in a loss of dynamic balance of the abrasive wheel or loosening of the wheel mounting where the wheel has'a small thickness of a few millimeters and is thrown into a high speed rotation, thereby causing unbalanced rotation.
  • Unbalanced or unsteady rotation of the rotary abrasive wheel will not only interfere with precision finishing, but may lead to serious results such as its fracture or injure to operating personnel.
  • a rotary abrasive wheel is obtained in which a label is embedded in the body of the abrasive wheel, but leaving an exposed presentation surface which is precisely level with the wheel surface.
  • the label cannot be digged peripherally or subjected to wind resistance during use.
  • the wheel remains quite free from the influence of the label.
  • FIG. 1 shows, in section, a mold used for carrying out the method of the invention and grindstone material placed therein, a press mold being also shown in singledot chain lines,
  • FIG. 2 is a fragmentary section of a rotary abrasive wheel with label, fabricated in the manner illustrated in FIG. 1, and
  • FIG. 3 is a similar view to FIG. I, but illustrating a slightly modified manner.
  • grindstone material is a particulate mixture comprising fine particles of abrasive material and thermosetting binder such as phenol resin.
  • the material is placed and compression molded in a mold, and the molded product is heated to cause the binder contained therein to set.
  • a mold 1 having a cavity 2 ofa desired volume.
  • the mold 1 includes a projection 3 located centrally in the cavity for forming a mounting hole 10 that is to be fitted on a machine member in order to secure an abrasive disc 9 formed thereon.
  • the mold l is associated with a press mold 11 that conforms to the cavity 2, for the purpose of compression molding the particulate fluid grindstone material to produce a compression product.
  • a proportion of the total quantity of the grindstone material, indicated at 4 is initially deposited substantially uniformly on the bottom of the mold cavity 2, and on the deposit is placed a strengthening material 5 which generally is a network of glass fibre. Then the remainder of the grindstone material,-6, is deposited from above on the strengthening material 5 substantially uniformly. It is a simple mattertolay the grindstone material all over the cavity bottom to a uniform thickness.
  • a label that is applied in accordance with the invention is shown at 7, and is placed on the top layer 6 of grindstone material. While it is disposed around the projection 3 and centrally in the cavity 2 in this particular embodiment, it should be obvious that the label may be disposed at any other location.
  • the whole lamination including the label 7 and the layers of grindstone'material (4 and 6) as well as the strengthening material 5 is subjected to compression with the press mold 11. Usually the compression takes place under the pressure of 100 to 200 Kg/cm.
  • the compression product includes the material 5 compacted in a sandwiched from between layers of grindstone material, and in the product is embedded the label 7 which is exposed at its surface alone.
  • the compression product obtained at this stage is still brittle, and the label 7 is not firmly bonded with the product.
  • the product is removed from the mold 1 and is heated in a suitable oven to the setting temperature of the binder used, whereupon the binder is melted and then set,
  • the heating for causing the binder contained in the grindstone material to set is conducted to a temperature which depends on the type of binder, but generally this temperature is around 200C.
  • both the strengthening material and the label material must be capable of bearing such a temperature.
  • Any suitable choice can be made from aluminium foil, paper, nonwoven fabric and synthetic resin film, for example.
  • the label placed on the layer of grindstone material 6 may be either a printed label or blank one for later presentation. Where a printed label is used in the process of compression molding, the ink used in printing the label must be heat resistant as is the label material.
  • FIG. 3 shows another manner of operation wherein another label 8 is placed on the bottom of the cavity 2 initially before the bottom layer of grindstone material 4 is deposited thereon.
  • the label 8 is embedded in the body of abrasive wheel with its surface exposed and level with the wheel surface, as in case of FIG. 1.
  • a process for fabricating a rotary abrasive wheel comprising depositing a grindstone material including a thermosetting binder uniformly in a mold cavity of a shape for forming said wheel, separately preparing a lable of a heat-resistant material with printing idicia thereon of a heat-resistant ink, positioning said label along at least one surface of said grind-stone material deposited in said mold, pressing said grindstone material and binder together with said label by said mold forming said wheel with said label in one face thereof, removing the compressed material with .said label thereon from said mold, heating said compresses material with said label therein bonding said lable to said compressed material with the aid of said thermosetting binder simultaneously when said thermosetting binder melts and firmly bonds the particles of said compressed grindstone material and keeping clear the printing on said label during said heating.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US00147044A 1970-05-29 1971-05-26 Method of attaching labels on rotary abrasive discs Expired - Lifetime US3805457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45046243A JPS5231596B1 (de) 1970-05-29 1970-05-29

Publications (1)

Publication Number Publication Date
US3805457A true US3805457A (en) 1974-04-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00147044A Expired - Lifetime US3805457A (en) 1970-05-29 1971-05-26 Method of attaching labels on rotary abrasive discs

Country Status (3)

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US (1) US3805457A (de)
JP (1) JPS5231596B1 (de)
CA (1) CA933367A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5233191A (en) * 1975-09-10 1977-03-14 Yozo Shimizu Applying methd of label material to rotatable grinder plate
JPS5241593U (de) * 1975-09-18 1977-03-24
US4088729A (en) * 1971-01-22 1978-05-09 Sherman William F Method of bonding a phenol-based thermoplastic resin to a cured and molded thermoset phenolic plastic
EP0027675A1 (de) * 1979-10-22 1981-04-29 DAVIDE MATERNINI S.r.l. Automatisierte Presse zum Formen von Schleifscheiben
US4931068A (en) * 1988-08-29 1990-06-05 Exxon Research And Engineering Company Method for fabricating fracture-resistant diamond and diamond composite articles
EP0848921A1 (de) * 1996-12-19 1998-06-24 S.I.T. Società Italiana Tecnospazzole S.p.A. Bürste und Verfahren zu deren Herstellung
FR2898070A1 (fr) * 2006-03-06 2007-09-07 Saint Gobain Abrasifs Tech Meule d'ebarbage fine, utilisation de cette meule, procede et dispositif pour la fabriquer
DE102019115477A1 (de) * 2019-06-07 2020-12-10 Rhodius Schleifwerkzeuge Gmbh & Co. Kg Bedruckbarer Schleifkörper und Verfahren zu dessen Herstellung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US642828A (en) * 1899-07-17 1900-02-06 Joseph F Spohn Grinding or polishing wheel.
US2397101A (en) * 1944-11-25 1946-03-26 Carborundum Co Abrasive article and method of manufacturing the same
US3256645A (en) * 1963-10-23 1966-06-21 Norton Co Mounting means for abrasive products
US3474494A (en) * 1964-08-01 1969-10-28 Lindstroem Gmbh Carl Gramophone record presses
US3526063A (en) * 1965-03-08 1970-09-01 Norton Co Integral mounting means and reinforcement for grinding wheels
US3528127A (en) * 1966-03-05 1970-09-15 Lindstroem Gmbh Carl Apparatus for the automatic production of gramophone records

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US642828A (en) * 1899-07-17 1900-02-06 Joseph F Spohn Grinding or polishing wheel.
US2397101A (en) * 1944-11-25 1946-03-26 Carborundum Co Abrasive article and method of manufacturing the same
US3256645A (en) * 1963-10-23 1966-06-21 Norton Co Mounting means for abrasive products
US3474494A (en) * 1964-08-01 1969-10-28 Lindstroem Gmbh Carl Gramophone record presses
US3526063A (en) * 1965-03-08 1970-09-01 Norton Co Integral mounting means and reinforcement for grinding wheels
US3528127A (en) * 1966-03-05 1970-09-15 Lindstroem Gmbh Carl Apparatus for the automatic production of gramophone records

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088729A (en) * 1971-01-22 1978-05-09 Sherman William F Method of bonding a phenol-based thermoplastic resin to a cured and molded thermoset phenolic plastic
JPS5233191A (en) * 1975-09-10 1977-03-14 Yozo Shimizu Applying methd of label material to rotatable grinder plate
JPS5241593U (de) * 1975-09-18 1977-03-24
EP0027675A1 (de) * 1979-10-22 1981-04-29 DAVIDE MATERNINI S.r.l. Automatisierte Presse zum Formen von Schleifscheiben
US4931068A (en) * 1988-08-29 1990-06-05 Exxon Research And Engineering Company Method for fabricating fracture-resistant diamond and diamond composite articles
EP0848921A1 (de) * 1996-12-19 1998-06-24 S.I.T. Società Italiana Tecnospazzole S.p.A. Bürste und Verfahren zu deren Herstellung
FR2898070A1 (fr) * 2006-03-06 2007-09-07 Saint Gobain Abrasifs Tech Meule d'ebarbage fine, utilisation de cette meule, procede et dispositif pour la fabriquer
WO2007101957A2 (fr) * 2006-03-06 2007-09-13 Saint-Gobain Abrasifs Technologie Et Service Meule d'ebarbage fine, utilisation de cette meule, procede et dispositif pour la fabriquer.
WO2007101957A3 (fr) * 2006-03-06 2007-10-25 Saint Gobain Abrasifs Tech Meule d'ebarbage fine, utilisation de cette meule, procede et dispositif pour la fabriquer.
AU2007222236B2 (en) * 2006-03-06 2012-10-04 Saint-Gobain Abrasifs Grinding wheel for fine trimming, use of this grinding wheel, and process and device for manufacturing it
CN101394972B (zh) * 2006-03-06 2013-03-27 圣戈班磨料科技服务公司 用于精修的轮、所述轮的使用及其制造方法和装置
DE102019115477A1 (de) * 2019-06-07 2020-12-10 Rhodius Schleifwerkzeuge Gmbh & Co. Kg Bedruckbarer Schleifkörper und Verfahren zu dessen Herstellung

Also Published As

Publication number Publication date
CA933367A (en) 1973-09-11
JPS5231596B1 (de) 1977-08-16

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