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AssigneesKodratenko Vladimir Stepanovich, Grander Technology Limited
InventorKondratenko Vladimir Stepanovich
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The invention can be used in various industries for machining miniature and large sized articles made of sapphire, quartz, ceramic, semiconductor and other hard-to-treat materials, including two-side machined pieces without preglueing. The inventive tool comprises a chuck provided with abrasive elements in the form of pellets fixed thereto. Abrasive filler is arranged between said elements. The density and abrasive grit of said abrasive filler range correspondingly from 0.2 to 0.8 and from 0.01 to 0.5 with respect to the density and abrasive grit of the elements. The inventive composition consists of epoxy resin, diamond-containing abrasive, a hardener, a filler and polyhydride siloxane. The polyhydride siloxane is used in order to form pores when reacting with the hardener during the production of the tool. Said invention makes it possible to produce the tool having a high cutting performance which ensures a high surface finish.
The polishing tool, containing chuck with abrasive units attached thereto, with filler, containing abrasive, placed in space between abrasive units, differing that the abrasive units are made in the form of pellets, the filler density makes 0.2-0.8 from density of the abrasive pellets, and the grit of the filler abrasive makes 0.01-0.5 from the abrasive pellets grit.
The composition for the polishing tool manufacture, containing epoxy resin, diamond containing abrasive, hardener and filler, differing that it additionally contains polyhydride siloxane with following components ratio in relative mass portions:
(New) The composition according to claim 11, wherein said composition additionally contains a functional additive comprising formic acid in amount of 1.0-10 parts by weight.
(New) The composition according to claim 11, wherein said filler is a composite of an abrasive based on not less than 70% of cerium dioxide, microbeads made of silicon dioxide sized from 10 to 100 nanometers, a graphite powder and a finely dispersed metal powder.
(New) The composition according to claim 11, wherein said filler is a composite of cerium dioxide with aminoplasts, said aminoplasts being thermosetting pressing mass, based on urea-, carbamide-, melamine-, and/or cabamidemelamineformaldehyde resin and/or phenoplasts, said phenoplasts being thermosetting pressing mass, based on formaldehyde resin, wherein said cerium dioxide and aminoplast and/or phenoplast in the composite are in a ratio of 1:(0.1-10).
(New) The composition according to claim 11, wherein said diamond containing abrasive is a composite of diamond dust with an auxiliary abrasive, said auxiliary abrasive being corundum or silicon carbide or boron carbide or boron nitride or their mixture, wherein a ratio of the diamond dust and the auxiliary abrasive in the composite is in a range of (0.01-10):(50-0.5) in parts by weight.
(New) A polishing tool, containing a chuck with abrasive units attached thereto, with a filler, containing an abrasive, placed in space between the abrasive units, wherein the abrasive units comprising the composition according to claim 11 and are made in a form of abrasive pellets, a filler density makes 0.2-0.8 from a density of the abrasive pellets, and a grit of the filler abrasive makes 0.01-0.5 from a grit of the abrasive pellets.
Dependencies are inferred from the claim text.