Patents by Inventor Tomoyuki Ishimine
Tomoyuki Ishimine has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11919081Abstract: A method of making a sintered part includes a step of applying a machining process to a compacted part with a tool to make a machined compacted part having a cogwheel shape, and a step of sintering the machined compacted part to make a sintered part, wherein the machining process is such that a surface of the compacted part on a side where the tool exits is supported by a plate member having a tooth pattern with same specifications as a tooth pattern of the cogwheel shape, and the tool is used to machine portions of the compacted part corresponding to tooth spaces of the plate member.Type: GrantFiled: February 21, 2020Date of Patent: March 5, 2024Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventors: Kazunari Shimauchi, Tomoyuki Ueno, Tomoyuki Ishimine
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Patent number: 11802617Abstract: A method of manufacturing a sintered gear includes preparing a green compact having two gear-shaped end surfaces, one on each of two sides in an axial direction of the green compact, and having a plurality of teeth on an outer peripheral surface formed between the two end surfaces; chamfering an edge of the teeth by a brush; and sintering the green compact. The brush is a wheel-type brush including a disk-shaped wheel and a bristle member radially protruding from an outer periphery of the wheel. The chamfering includes disposing the brush with respect to the green compact such that the axial direction of the green compact and an axial direction of the wheel intersect with each other; bringing a tip of the bristle member into contact with a tooth bottom edge; and relatively moving the brush in a circumferential direction of the green compact while rotating the brush.Type: GrantFiled: September 29, 2021Date of Patent: October 31, 2023Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventors: Kazunari Shimauchi, Tomoyuki Ueno, Tomoyuki Ishimine
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Publication number: 20230287970Abstract: A method of manufacturing a sintered gear includes preparing a green compact having two gear-shaped end surfaces, one on each of two sides in an axial direction of the green compact, and having a plurality of teeth on an outer peripheral surface formed between the two end surfaces; chamfering an edge of the teeth by a brush; and sintering the green compact. The brush is a wheel-type brush including a disk-shaped wheel and a bristle member radially protruding from an outer periphery of the wheel. The chamfering includes disposing the brush with respect to the green compact such that the axial direction of the green compact and an axial direction of the wheel intersect with each other; bringing a tip of the bristle member into contact with a tooth bottom edge; and relatively moving the brush in a circumferential direction of the green compact while rotating the brush.Type: ApplicationFiled: September 29, 2021Publication date: September 14, 2023Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Sintered Alloy, Ltd.Inventors: Kazunari SHIMAUCHI, Tomoyuki UENO, Tomoyuki ISHIMINE
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Patent number: 11745261Abstract: A sintered gear of annular shape which has a composition including a metal, has a plurality of pores in a surface thereof, and has a relative density of 93% or more and 99.5% or less.Type: GrantFiled: August 30, 2019Date of Patent: September 5, 2023Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventors: Tomoyuki Ishimine, Shigeki Egashira, Kazunari Shimauchi, Takayuki Tashiro
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Publication number: 20230143036Abstract: A core piece includes a first member in a column form and a second member in a plate form, the first member and the second member being configured by a green compact in which the first member and the second member are integrally formed, the green compact includes a plurality of soft magnetic particles having a flat shape, a first average aspect ratio of the soft magnetic particles is greater than or equal to 1.2 in a first cross section of the first member, a second average aspect ratio of the soft magnetic particles is greater than or equal to 1.2 in a second cross section of the second member, each of the first average aspect ratio and the second average aspect ratio is related to an average of lengths of soft magnetic particles in a direction of the stator core.Type: ApplicationFiled: March 31, 2021Publication date: May 11, 2023Applicants: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventors: Tatsuya SAITO, Tomoyuki UENO, Tomoyuki ISHIMINE
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Publication number: 20230054503Abstract: A tool main body to which an insert is attachable, in which the tool main body is made of sintered metal material, and the sintered metal material includes a parent phase made of a metal and a plurality of pores present in the parent phase.Type: ApplicationFiled: October 29, 2020Publication date: February 23, 2023Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Sintered Alloy, Ltd.Inventors: Tomoyuki ISHIMINE, Mitsuhiro GOTO, Shigeki EGASHIRA, Kazunari SHIMAUCHI
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Publication number: 20220299097Abstract: A sintered gear of annular shape which has a composition including a metal, has a plurality of pores in a surface thereof, and has a relative density of 93% or more and 99.5% or less.Type: ApplicationFiled: August 30, 2019Publication date: September 22, 2022Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Sintered Alloy, Ltd.Inventors: Tomoyuki ISHIMINE, Shigeki EGASHIRA, Kazunari SHIMAUCHI, Takayuki TASHIRO
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Publication number: 20220281000Abstract: A sintered material containing a parent phase composed of a metal and a plurality of pores present in the parent phase, wherein the pores in a cross section have an average cross-sectional area of 500 ?m2 or less, and the sintered material has a relative density in the range of 93% to 99.5%.Type: ApplicationFiled: August 30, 2019Publication date: September 8, 2022Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Sintered Alloy, Ltd.Inventors: Tomoyuki ISHIMINE, Shigeki EGASHIRA, Kazunari SHIMAUCHI, Takayuki TASHIRO
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Publication number: 20220226944Abstract: A method for manufacturing a sintered gear comprising the steps of: preparing a cylindrical green compact; gear-cutting the green compact with a hob; and sintering the gear-hobbed green compact, wherein the hob is such that a ratio of a number of cutting edges thereof per round to a number of starts thereof exceeds 8.Type: ApplicationFiled: April 28, 2020Publication date: July 21, 2022Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Sintered Alloy, Ltd.Inventors: Kazunari SHIMAUCHI, Tomoyuki UENO, Tomoyuki ISHIMINE, Munehiro NODA
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Publication number: 20220152701Abstract: A method of making a sintered body includes a step of preparing raw material powder containing powder of inorganic material, a step of producing a powder compact having a high-density portion with a relative density of 93% or more and a low-density portion with a relative density of less than 93% by compressing the raw material powder injected into a mold, a step of producing a machined compacted part by machining at least the high-density portion of the powder compact, and a step of sintering the machined compacted part to make a sintered body, wherein a perimeter shape of a cavity constituted by the mold in a cross-section perpendicular to an axial direction of the mold is such than a maximum stress applied to an inner perimeter surface of the mold during a compacting process using the mold is less than or equal to 2.Type: ApplicationFiled: April 13, 2020Publication date: May 19, 2022Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventors: Tomoyuki ISHIMINE, Shigeki EGASHIRA, Munehiro NODA, Takayuki TASHIRO, Kazunari SHIMAUCHI
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Publication number: 20220143696Abstract: A method of making a sintered part includes a step of applying a machining process to a compacted part with a tool to make a machined compacted part having a cogwheel shape, and a step of sintering the machined compacted part to make a sintered part, wherein the machining process is such that a surface of the compacted part on a side where the tool exits is supported by a plate member having a tooth pattern with same specifications as a tooth pattern of the cogwheel shape, and the tool is used to machine portions of the compacted part corresponding to tooth spaces of the plate member.Type: ApplicationFiled: February 21, 2020Publication date: May 12, 2022Inventors: Kazunari SHIMAUCHI, Tomoyuki UENO, Tomoyuki ISHIMINE
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Publication number: 20220105564Abstract: A sintered material with a composition composed of an iron-based alloy and a structure in which the number of compound particles 0.3 ?m or more in size is less than 200 per 100 ?m×100 ?m unit area in a cross section, wherein the sintered material has a relative density of 93% or more.Type: ApplicationFiled: January 29, 2020Publication date: April 7, 2022Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Sintered Alloy, Ltd.Inventors: Shigeki EGASHIRA, Takayuki TASHIRO, Tomoyuki ISHIMINE, Kosuke TOMINAGA
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Publication number: 20210283685Abstract: A method for collecting an iron-based powder includes the steps of; preparing a raw material powder containing a first metal powder containing 90% by mass or more of iron; forming a green compact by subjecting the raw material powder to uniaxial pressing using a die; machining the green compact; and collecting a second metal powder having an average particle diameter of 50 ?m or more and 500 ?m or less from machining chips generated in the step of machining.Type: ApplicationFiled: June 2, 2021Publication date: September 16, 2021Applicants: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventors: Tomoyuki Ishimine, Tetsuya Hayashi, Terukazu Tokuoka, Toshihiko Kaji
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Publication number: 20210162499Abstract: A method for manufacturing a sintered member includes a step of preparing a raw material powder containing an iron-based powder; a step of forming a green compact having a relative density of 97% or more and having a solid cylindrical shape or hollow cylindrical shape by compacting the raw material powder; and a step of sintering the green compact. The raw material powder contains at least one of a mixed powder containing pure iron powder and Ni powder and an iron alloy powder containing Ni as an additive element. The total amount of the Ni powder and Ni serving as the additive element in the raw material powder is 1 mass % or more.Type: ApplicationFiled: May 8, 2018Publication date: June 3, 2021Inventors: Tomoyuki ISHIMINE, Shigeki EGASHIRA, Munehiro NODA
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Publication number: 20210162498Abstract: A sintered material includes a composition composed of iron-based alloy, and a texture containing 200 or more and 1350 or less of compound particles having a size of 0.3 ?m or more per unit area of 100 ?m×100 ?m in a cross section, and a relative density is 93% or more.Type: ApplicationFiled: January 30, 2019Publication date: June 3, 2021Inventors: Shigeki EGASHIRA, Takayuki TASHIRO, Tomoyuki ISHIMINE, Kosuke TOMINAGA
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Patent number: 10737361Abstract: A machining jig holds a workpiece with respect to a tool that partially removes an outer peripheral surface of the workpiece. The machining jig includes a first jig including an inner peripheral surface having a shape similar to a contour of the workpiece and an outer peripheral surface including a first inclined section inclined with respect to an axial direction of the workpiece; a second jig including an inner peripheral surface including a second inclined section configured to be fitted to the first inclined section; a base to which the second jig is coaxially fixed; and a sliding mechanism that enables a large-diameter portion of the first inclined section and a small-diameter portion of the second inclined section to move toward and away from each other.Type: GrantFiled: June 7, 2017Date of Patent: August 11, 2020Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventors: Tomoyuki Ishimine, Hirofumi Kiguchi
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Publication number: 20200208244Abstract: A sintered material made of an iron-based alloy is provided, wherein a content of Ni is more than 0.2 mass % and 10 mass % or less in an entire iron-based alloy; a content of C is more than 0 mass % and 2.0 mass % or less in the entire iron-based alloy; at least one element selected from Mo, Mn, Cr B and Si is more than 0 mass % and 5.0 mass % or less in total in the entire iron-based alloy; and a rest of the iron-based alloy is Fe and incidental impurities. A content of Ni in a local region of the iron-based alloy is more than 0.2 mass % and less than 21 mass %. A relative density is 97% or more.Type: ApplicationFiled: July 19, 2018Publication date: July 2, 2020Inventors: Shigeki EGASHIRA, Tomoyuki ISHIMINE, Munehiro NODA, Takashi SEKIYA
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Publication number: 20190314941Abstract: A machining jig holds a workpiece with respect to a tool that partially removes an outer peripheral surface of the workpiece. The machining jig includes a first jig including an inner peripheral surface having a shape similar to a contour of the workpiece and an outer peripheral surface including a first inclined section inclined with respect to an axial direction of the workpiece; a second jig including an inner peripheral surface including a second inclined section configured to be fitted to the first inclined section; a base to which the second jig is coaxially fixed; and a sliding mechanism that enables a large-diameter portion of the first inclined section and a small-diameter portion of the second inclined section to move toward and away from each other.Type: ApplicationFiled: June 7, 2017Publication date: October 17, 2019Inventors: Tomoyuki Ishimine, Hirofumi Kiguchi
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Publication number: 20180236548Abstract: A sintered body manufacturing method includes: a preparation step of preparing a raw material powder containing an iron-based metal powder; a molding step of subjecting the raw material powder to uniaxial pressing using a die to produce a green compact having an overall average relative density of 93% or more; a machining step of machining the green compact to produce a machined compact; and a sintering step of sintering the machined compact to obtain a sintered body.Type: ApplicationFiled: April 4, 2017Publication date: August 23, 2018Inventors: Tomoyuki Ishimine, Tetsuya Hayashi, Terukazu Tokuoka, Toshihiko Kaji
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Publication number: 20180161869Abstract: Provided is a granulated powder including a plurality of metal particles, a binder resin for binding the plurality of metal particles together, and a thickener that is contained in the binder resin and increases the viscosity of the binder resin.Type: ApplicationFiled: May 25, 2016Publication date: June 14, 2018Inventor: Tomoyuki Ishimine