Patents by Inventor Yasunori Sonoda
Yasunori Sonoda 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: 11325186Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.Type: GrantFiled: December 8, 2015Date of Patent: May 10, 2022Assignees: Sumitomo Electric Sintered Alloy, Ltd., Nikken Tool Co., Ltd.Inventors: Yasunori Sonoda, Ryota Take, Fumihiro Matsumoto, Tsuguru Sugimoto
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Patent number: 11305347Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.Type: GrantFiled: July 7, 2020Date of Patent: April 19, 2022Assignees: Sumitomo Electric Sintered Alloy, Ltd., Nikken Tool Co., Ltd.Inventors: Yasunori Sonoda, Ryota Take, Fumihiro Matsumoto, Tsuguru Sugimoto
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Patent number: 11219950Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.Type: GrantFiled: March 18, 2019Date of Patent: January 11, 2022Assignee: Sumitomo Electric Sintered Alloy, Ltd.Inventors: Yasunori Sonoda, Ryota Take
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Patent number: 11097342Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.Type: GrantFiled: December 8, 2015Date of Patent: August 24, 2021Assignee: Sumitomo Electric Sintered Alloy, Ltd.Inventors: Yasunori Sonoda, Ryota Take
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Patent number: 11040398Abstract: A method for producing a sintered component includes: a compacting step of press-compacting a raw material powder containing a plurality of metal particles to form a compact; a cutting-machining step of rotating a cutting tool circumferentially having a plurality of cutting edges to cause the cutting edges to intermittently cut a surface of the compact; and a sintering step of sintering the compact after the cutting-machining step. The cutting speed of the cutting tool is 1000 m/min or more.Type: GrantFiled: October 27, 2017Date of Patent: June 22, 2021Assignee: SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventor: Yasunori Sonoda
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Patent number: 10894291Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.Type: GrantFiled: December 8, 2015Date of Patent: January 19, 2021Assignee: Sumitomo Electric Sintered Alloy, Ltd.Inventors: Yasunori Sonoda, Ryota Take
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Publication number: 20200331065Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.Type: ApplicationFiled: July 7, 2020Publication date: October 22, 2020Applicants: SUMITOMO ELECTRIC SINTERED ALLOY, LTD., NIKKEN TOOL CO., LTD.Inventors: Yasunori Sonoda, Ryota Take, Fumihiro Matsumoto, Tsuguru Sugimoto
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Publication number: 20190366439Abstract: A method for producing a sintered component includes: a compacting step of press-compacting a raw material powder containing a plurality of metal particles to form a compact; a cutting-machining step of rotating a cutting tool circumferentially having a plurality of cutting edges to cause the cutting edges to intermittently cut a surface of the compact; and a sintering step of sintering the compact after the cutting-machining step. The cutting speed of the cutting tool is 1000 m/min or more.Type: ApplicationFiled: October 27, 2017Publication date: December 5, 2019Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD.Inventor: Yasunori SONODA
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Publication number: 20190224752Abstract: A method for manufacturing a sintered component includes a compaction step of press-compacting a starting powder containing a metal powder to form a compact; a drilling step of forming a hole in the compact with a drill to form a thin portion where the thickness between an inner circumferential surface of the hole and an outer surface of the compact is smaller than the diameter of the hole; and a sintering step of sintering the compact after the drilling step. The drilling step is performed while the outer surface of the compact is pressed in a region extending over the entire length of the hole in an axial direction. The width of the region where the outer surface of the compact is pressed is from 1/3 times to twice the diameter of the hole.Type: ApplicationFiled: December 22, 2017Publication date: July 25, 2019Inventor: Yasunori Sonoda
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Publication number: 20190210110Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.Type: ApplicationFiled: March 18, 2019Publication date: July 11, 2019Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTDInventors: Yasunori Sonoda, Ryota Take
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Publication number: 20170320136Abstract: Provided is a method for manufacturing a sintered component, which can suppress occurrence of edge chipping when a through-hole is formed in a powder-compact green body and also has a good productivity. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a powder-compact green body; a drilling step of forming a hole in the powder-compact green body using a drill; a sintering step of sintering the powder-compact green body after drilling, wherein the drill used for drilling has a circular-arc shaped cutting edge on a point portion thereof.Type: ApplicationFiled: December 8, 2015Publication date: November 9, 2017Inventors: Yasunori Sonoda, Ryota Take, Fumihiro Matsumoto, Tsuguru Sugimoto
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Publication number: 20170320137Abstract: Provided is a method for manufacturing a sintered component having a hole formed therein, in which a sintered component having no defect, such as cracks, can be manufactured with good productivity and also a reduction in tool life accompanied by forming the hole can be suppressed. The method for manufacturing a sintered component includes a molding step of press-molding a raw material powder containing a metal powder and thus fabricating a green body; a drilling step of forming a hole in the green body using a candle-type drill and thus forming a thin-walled portion, of which a thickness Gt as measured between an inner circumferential surface of the hole and an outer surface of the green body is smaller than a diameter Gd of the hole; and a sintering step of sintering the green body after the drilling step.Type: ApplicationFiled: December 8, 2015Publication date: November 9, 2017Inventors: Yasunori Sonoda, Ryota Take