US 12,290,869 B2
Tipped saw blade
Tomoaki Watanabe, Aichi-ken (JP)
Assigned to KANEFUSA KABUSHIKI KAISHA, Aichi (JP)
Appl. No. 17/777,581
Filed by KANEFUSA KABUSHIKI KAISHA, Aichi (JP)
PCT Filed Dec. 4, 2020, PCT No. PCT/JP2020/045213
§ 371(c)(1), (2) Date May 17, 2022,
PCT Pub. No. WO2021/124927, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 2019-228921 (JP), filed on Dec. 19, 2019.
Prior Publication US 2023/0020592 A1, Jan. 19, 2023
Int. Cl. B23D 61/04 (2006.01); B27B 33/08 (2006.01)
CPC B23D 61/04 (2013.01) [B27B 33/08 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A tipped saw blade having a central axis of rotation, the tipped saw blade comprising:
a disc-shaped base metal; and
a plurality of circumferentially-adjacent tips extending from and positioned about a radially outer periphery of the base metal, wherein:
the plurality of tips includes at least one first tip, a plurality of second tips, and a plurality of third tips;
each of the at least one first tip includes a flat edge having a cutting edge oriented parallel to the central axis and positioned at a first radial distance from the central axis;
each of the plurality of second tips includes a first beveled edge having a cutting edge inclined relative to the central axis;
each of the plurality of third tips includes a second beveled edge having a cutting edge inclined relative to the central axis;
a length of a portion of the cutting edge of the first beveled edge that is positioned radially further away from the central axis than the cutting edge of the flat edge defines a first beveled cutting edge line length;
a length of a portion of the cutting edge of the second beveled edge that is positioned radially further away from the central axis than the cutting edge of the flat edge defines a second beveled cutting edge line length;
a length of a portion of the cutting edge of the flat edge positioned axially between the cutting edge of the first beveled edge and the cutting edge of the second beveled edge at the first radial distance defines a first flat cutting edge line length; and
the first beveled cutting edge line length, the second beveled cutting edge line length, and the first flat cutting edge line length satisfy the following relationship:
((the first beveled cutting edge line length)×(a number of the second tips+(the second beveled cutting edge line length)×(a number of the third tips)≤[((the first flat cutting edge line length)−(a distance between outer edges of the cutting edge of the first beveled edge and the second beveled edge in an axial direction of the base metal+1.5))×(a number of the first tips)×1.2].