Saw blade and method for arranging saw teeth
AssigneesAmada Company, Limited, Amada Machine Tools Co., Ltd.
InventorsSusumu Tsujimoto, Takeshi Ueyama
Life of this patent
Estimating the term…
Abstract
A saw blade includes a group A (group A1 [=straight tooth+the odd number of set teeth]+group A2 [=straight tooth+the even number of set teeth]) and a group B (group B1 [=straight tooth+the odd number of set teeth having opposite set-bending sides to those in the group A1]+group B2 [=straight tooth+the even number of set teeth having opposite set-bending sides to those in the group A2]). Wide and narrow set teeth are arranged so that a max/min ratio of the number of pitches between the narrow set teeth having identical set-bending side and set width is 1.8 or less, and a max/min ratio of the number of pitches between the wide set teeth having identical set-bending side set width is 2.7 or less.
Claims10
A saw blade including straight teeth and set teeth, each of the set teeth having a set-bending side that is set to one of a left and a right side of the straight teeth, each of the set teeth having a width that is set to one of a wide-width and a narrow-width, wherein a width of the wide-width is larger than a width of the narrow-width, the blade comprising:
- a first arrangement of teeth that is composed of, successively from a cutting leading side, a first group of teeth composed of a first straight tooth among the straight teeth and an even number of a first sub-group of set teeth among the set teeth, and a second group of teeth that is sequentially next to the first group of teeth and is composed of a second straight tooth among the straight teeth and an odd number of a second sub-group of set teeth among the set teeth, and
- a second arrangement of teeth that is sequentially next to the first arrangement of teeth, and is composed of, successively from the cutting leading side, a third group of teeth composed of a third straight tooth among the straight teeth and an even number of a third-subgroup of set teeth having set-bending sides that are opposite to those of the even number of the first sub-group of set teeth in the first group of teeth, and a fourth group of teeth that is sequentially next to the third group of teeth and is composed of a fourth straight tooth among the straight teeth and an odd number of a fourth sub-group of set teeth whose set-bending sides are opposite to those of the odd number of the second sub-group of set teeth in the second group of teeth, wherein
- the first arrangement of teeth and the second arrangement of teeth are arranged alternately and repeatedly, and
- wide set teeth having the wide-width and narrow set teeth having the narrow-width are arranged so that a ratio of a maximum value to a minimum value of the number of pitches between the narrow set teeth having an identical set-bending side and an identical set width is 1.8 or less, and a ratio of a maximum value to a minimum value of the number of pitches between the wide set teeth having an identical set-bending side and an identical set width is 2.7 or less.
A method for arranging saw teeth in a saw blade including straight teeth and set teeth, the method comprising:
- providing each of the set teeth having a set-bending side that is set to one of a left and a right side of the straight teeth, and
- providing each of the set teeth having a width that is set to one of a wide-width and a narrow-width, wherein a width of the wide-width is larger than a width of the narrow-width,
- arranging a first arrangement of teeth that is composed of, successively from a cutting leading side, a first group of teeth composed of a first straight tooth among the straight teeth and an even number of a first sub-group of set teeth among the set teeth, and a second group of teeth that is sequentially next to the first group of teeth and is composed of a second straight tooth among the straight teeth and an odd number of set teeth among the set teeth,
- arranging a second arrangement of teeth that is sequentially next to the first arrangement of teeth, and is composed of, successively from the cutting leading side, a third group of teeth composed of a third straight tooth among the straight teeth and an even number of a third-subgroup of set teeth having set-bending sides that are opposite to those of the even number of the first sub-group of set teeth in the first group of teeth, and a fourth group of teeth that is sequentially next to the third group of teeth and is composed of a fourth straight tooth among the straight teeth and an odd number of a fourth sub-group of set teeth whose set-bending sides are opposite to those of the odd number of the second sub-group of set teeth in the second group of teeth,
- arranging the first arrangement of teeth and the second arrangement of teeth alternately and repeatedly, and
- arranging wide set teeth having the wide-width and narrow set teeth having the narrow-width so that a ratio of a maximum value to a minimum value of the number of pitches between the narrow set teeth having an identical set-bending side and an identical set width is 1.8 or less, and a ratio of a maximum value to a minimum value of the number of pitches between the wide set teeth having an identical set-bending side and an identical set width is 2.7 or less.
Dependencies are inferred from the claim text.