DRILL

PROBLEM TO BE SOLVED: To provide a drill with a plurality of cutting edges which has an improved thinning shape of a rotation center part to suppress abrasion at a position where the groove surface of the thinning part meets the groove surface of a flute groove, and improves discharge of scraps in t...

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Hauptverfasser:	KAMISHIRO MASAAKI, NISHI KENTA, KURITSUKA KAZUMASA
Format:	Patent
Sprache:	eng
Schlagworte:	BORING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TRANSPORTING TURNING
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creator	KAMISHIRO MASAAKI NISHI KENTA KURITSUKA KAZUMASA
description	PROBLEM TO BE SOLVED: To provide a drill with a plurality of cutting edges which has an improved thinning shape of a rotation center part to suppress abrasion at a position where the groove surface of the thinning part meets the groove surface of a flute groove, and improves discharge of scraps in the thinning part to improve processing performance and life thereof.SOLUTION: A thinning part 4 employs two-stage thinning with a first thinning part 4disposed on the rotation center side and a second thinning part 4connected to the first thinning part at an angle. The axial rake angle of the first thinning part 4is set within the range from -5° to -10°, and the axial rake angle of the second thinning part 4relative to the axial rake angle of the first thinning part is set within the range from +2° to +4°.
format	Patent
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The axial rake angle of the first thinning part 4is set within the range from -5° to -10°, and the axial rake angle of the second thinning part 4relative to the axial rake angle of the first thinning part is set within the range from +2° to +4°.</description><language>eng</language><subject>BORING ; MACHINE TOOLS ; METAL-WORKING NOT OTHERWISE PROVIDED FOR ; PERFORMING OPERATIONS ; TRANSPORTING ; TURNING</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140116&DB=EPODOC&CC=JP&NR=2014004671A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140116&DB=EPODOC&CC=JP&NR=2014004671A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KAMISHIRO MASAAKI</creatorcontrib><creatorcontrib>NISHI KENTA</creatorcontrib><creatorcontrib>KURITSUKA KAZUMASA</creatorcontrib><title>DRILL</title><description>PROBLEM TO BE SOLVED: To provide a drill with a plurality of cutting edges which has an improved thinning shape of a rotation center part to suppress abrasion at a position where the groove surface of the thinning part meets the groove surface of a flute groove, and improves discharge of scraps in the thinning part to improve processing performance and life thereof.SOLUTION: A thinning part 4 employs two-stage thinning with a first thinning part 4disposed on the rotation center side and a second thinning part 4connected to the first thinning part at an angle. The axial rake angle of the first thinning part 4is set within the range from -5° to -10°, and the axial rake angle of the second thinning part 4relative to the axial rake angle of the first thinning part is set within the range from +2° to +4°.</description><subject>BORING</subject><subject>MACHINE TOOLS</subject><subject>METAL-WORKING NOT OTHERWISE PROVIDED FOR</subject><subject>PERFORMING OPERATIONS</subject><subject>TRANSPORTING</subject><subject>TURNING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZGB1CfL08eFhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFeAUYGhiYGBiZm5oaOxkQpAgAAmRrJ</recordid><startdate>20140116</startdate><enddate>20140116</enddate><creator>KAMISHIRO MASAAKI</creator><creator>NISHI KENTA</creator><creator>KURITSUKA KAZUMASA</creator><scope>EVB</scope></search><sort><creationdate>20140116</creationdate><title>DRILL</title><author>KAMISHIRO MASAAKI ; NISHI KENTA ; KURITSUKA KAZUMASA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2014004671A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2014</creationdate><topic>BORING</topic><topic>MACHINE TOOLS</topic><topic>METAL-WORKING NOT OTHERWISE PROVIDED FOR</topic><topic>PERFORMING OPERATIONS</topic><topic>TRANSPORTING</topic><topic>TURNING</topic><toplevel>online_resources</toplevel><creatorcontrib>KAMISHIRO MASAAKI</creatorcontrib><creatorcontrib>NISHI KENTA</creatorcontrib><creatorcontrib>KURITSUKA KAZUMASA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KAMISHIRO MASAAKI</au><au>NISHI KENTA</au><au>KURITSUKA KAZUMASA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>DRILL</title><date>2014-01-16</date><risdate>2014</risdate><abstract>PROBLEM TO BE SOLVED: To provide a drill with a plurality of cutting edges which has an improved thinning shape of a rotation center part to suppress abrasion at a position where the groove surface of the thinning part meets the groove surface of a flute groove, and improves discharge of scraps in the thinning part to improve processing performance and life thereof.SOLUTION: A thinning part 4 employs two-stage thinning with a first thinning part 4disposed on the rotation center side and a second thinning part 4connected to the first thinning part at an angle. The axial rake angle of the first thinning part 4is set within the range from -5° to -10°, and the axial rake angle of the second thinning part 4relative to the axial rake angle of the first thinning part is set within the range from +2° to +4°.</abstract><oa>free_for_read</oa></addata></record>
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subjects	BORING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS TRANSPORTING TURNING
title	DRILL
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