US 11,806,797 B2
Machining tool
Junya Onose, Tokyo (JP); Mayumi Saruyama, Tokyo (JP); Yusaku Kotaki, Tokyo (JP); Akihiro Osawa, Tokyo (JP); Takayuki Konno, Tokyo (JP); Tomoya Kuroda, Tokyo (JP); and Kyoko Tabata, Tokyo (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 28, 2022, as Appl. No. 17/681,962.
Claims priority of application No. 2021-061401 (JP), filed on Mar. 31, 2021.
Prior Publication US 2022/0314340 A1, Oct. 6, 2022
Int. Cl. B23D 77/00 (2006.01); B23B 51/00 (2006.01)
CPC B23D 77/00 (2013.01) [B23B 51/009 (2013.01); B23D 77/006 (2013.01); B23D 2277/04 (2013.01); B23D 2277/203 (2013.01); Y10T 408/906 (2015.01); Y10T 408/9095 (2015.01)] 3 Claims
OG exemplary drawing
 
1. A machining tool that is rotated about an axis, the machining tool comprising; a plurality of shaft portions that are provided at different positions in an axial direction; and a plurality of machining blade portions that each include a rake face and a machining blade and are provided to the plurality of shaft portions, respectively, the plurality of shaft portions comprise: a first shaft portion, a second shaft portion that is provided more toward a proximal end than the first shaft portion and has a larger diameter than the first shaft portion, a third shaft portion that is provided more toward the proximal end than the second shaft portion and has a larger diameter than the second shaft portion, and a fourth shaft portion that is provided more toward the proximal end than the third shaft portion and has a larger diameter than the third shaft portion, each rake face is a face formed parallel with the axis, a plurality of grooves that supplies lubricant to the machining blade are formed on each rake face, each of the plurality of grooves includes one end reaching the machining blade, and the plurality of grooves are arranged in parallel with each other, the plurality of grooves of the machining blade portions provided at the first shaft portion and the fourth shaft portion is inclined with respect to the axis, each of the machining blade portions provided at the first shaft portion and the fourth shaft portion include an oblique end face that is inclined with respect to a plane perpendicular to the axis, the plurality of grooves of the machining blade portions provided at the second shaft portion and the third shaft portion are formed parallel to the axis, the machining blades of the machining blade portions provided at the second shaft portion and the third shaft portion are parallel with the plane perpendicular to the axis, and wherein at each of the plurality of machining blade portions, in a case where the rake face faces and is parallel to a virtual plane including the axis, the rake face is arranged at a position deviated deviating from the virtual plane in a direction opposite to a rotational direction of the machining tool.