Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kazuhiro Kobayashi0
Toru Shimosato0
Tsutomu Suzuki0
Date of Patent
June 19, 2007
0Patent Application Number
114603570
Date Filed
July 27, 2006
0Patent Primary Examiner
Patent abstract
A knuckle 1 has a through hole 3 provided in a fitting hole 4 thereof. A cutting tool 9, which has a diameter being larger than that of the through hole 3 and also has a cutting part having a hemispherical leading end portion, is caused to go into the through hole 3 at an angle at which the tool 9 does not touch the remaining part of the knuckle 1. Then, a burr formed at a fitting-hole-side open end portion 7 of the through hole 3 is removed by rotating the cutting tool 9 while the leading end portion thereof is made to obliquely abut against the open end portion 7 of the through hole 3.
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