Saw blade

• US 20040035282A1
• Filed: 05/12/2003
• Published: 02/26/2004
• Est. Priority Date: 11/27/2000
• Status: Active Grant

• Current Assignee: Amada Company Limited
• Original Assignee: Amada Company Limited
• Inventors: Tsujimoto, Susumu
• Granted Patent: US 7,568,416 B2
• Time in Patent Office: Days
• US Class Current: 83/849
• CPC Class Codes: B23D 61/021 Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
• CPC Class Codes: B23D 61/121 Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
• CPC Class Codes: Y10T 83/9346 Uniformly varying teeth or tooth spacing
• CPC Class Codes: Y10T 83/9348 Undulating tooth arrangement
• CPC Class Codes: Y10T 83/935 Plural tooth groups
• CPC Class Codes: Y10T 83/9353 Including raker tooth group
• CPC Class Codes: Y10T 83/9358 Series of dissimilar teeth

Abstract

A saw blade in which a structure pattern comprising first teeth group A and a second teeth group B each having a plurality of set teeth is repeated, wherein the saw blade has at least one or both of the following conditions, i.e., a condition in which a tooth height of the second teeth group B is lower than that of the first teeth group A, and a condition in which a set amount of the second teeth group B is smaller than that of the first teeth group A, and wherein the first teeth group A has at least one spur tooth.

Claims

1. A saw blade in which a set pattern comprising a combination of a first teeth group having a spur tooth and left and right laterally bent set teeth and a second teeth group having left and right laterally bent set teeth is appropriately repeated, wherein set amounts of the left and right set teeth of the second teeth group are smaller than or equal to set amounts of the left and right set teeth of the first teeth group.

2. A saw blade according to claim 1, wherein

the second teeth group includes a spur tooth, the number of teeth of the first teeth group and the number of teeth of the second teeth group are the same.

3. A saw blade according to claim 2, wherein

the number of the left and right set teeth of the first teeth group and the number of left and right set teeth of the second teeth group are the same.

4. A saw blade according to claim 3, wherein

the first teeth groups and the second teeth groups are alternately arranged.

5. A saw blade according to claim 4, wherein

the number of teeth of the second teeth group is greater than the number of teeth of the first teeth group.

6. A saw blade according to claim 4, wherein

the number of teeth of the first teeth group is greater than the number of teeth of the second teeth group.

7. A saw blade according to claim 6, wherein

set teeth of the left and right set teeth of the first and second teeth group which are bent in the same direction are continuously arranged.

8. A saw blade according to claim 7, wherein

set teeth of the left and right set teeth of the first and second teeth group which are bent in the same direction are not continuously arranged.

9. A saw blade according to claim 8, wherein

pitches between the teeth are not equal to each other.

10. A saw blade according to claim 9, wherein

the non equal pitches are two kinds of pitches.

11. A saw blade according to claim 10, wherein

a height difference between the teeth of the first teeth group and the teeth of the second teeth group is 0.2 mm or less.

12. A saw blade according to claim 11, wherein

a bottom of a garret of the saw tooth of the second teeth group is located closer to a tip than a garret of the saw tooth of the first teeth group.

13. A saw blade in which a set pattern comprising a combination of a first teeth group having a spur tooth and left and right laterally bent set teeth and a second teeth group having left and right laterally bent set teeth is appropriately repeated, wherein a tooth height of the second teeth group is lower than a tooth height of the first teeth group.

14. A saw blade according to claim 13, wherein

set amounts of the left and right set teeth of the second teeth group are smaller than or equal to set amounts of the left and right set teeth of the first teeth group.

15. A saw blade according to claim 13, wherein

the second teeth group includes a spur tooth, the number of teeth of the first teeth group and the number of teeth of the second teeth group are the same.

16. A saw blade according to claim 15, wherein

the number of the left and right set teeth of the first teeth group and the number of left and right set teeth of the second teeth group are the same.

17. A saw blade according to claim 16, wherein

the first teeth groups and the second teeth groups are alternately arranged.

18. A saw blade according to claim 17, wherein

the number of teeth of the second teeth group is greater than the number of teeth of the first teeth group.

19. A saw blade according to claim 18, wherein

the number of teeth of the first teeth group is greater than the number of teeth of the second teeth group.

20. A saw blade according to claim 19, wherein

set teeth of the left and right set teeth of the first and second teeth group which are bent in the same direction are continuously arranged.

21. A saw blade according to claim 20, wherein

set teeth of the left and right set teeth of the first and second teeth group which are bent in the same direction are not continuously arranged.

22. A saw blade according to claim 21, wherein

pitches between the teeth are not equal to each other.

23. A saw blade according to claim 22, wherein

the non equal pitches are two kinds of pitches.

24. A saw blade according to claim 23, wherein

a height difference between the teeth of the first teeth group and the teeth of the second teeth group is 0.2 mm or less.

25. A saw blade according to claim 24, wherein

a bottom of a garret of the saw tooth of the second teeth group is located closer to a tip than a garret of the saw tooth of the first teeth group.

26. A saw blade in which a set pattern comprising a combination of first and second teeth group each having at least a spur tooth and a pair of left and right laterally bent set teeth is appropriately repeated, wherein a tooth height of the saw tooth of the second teeth group is lower than a tooth height of the saw tooth of the first teeth group, a tip pitch including a garret of the saw tooth of the second teeth group is smaller than a tip pitch including a garret of the saw tooth of the first teeth group, set amounts of the left and right set teeth of the second teeth group are equal to or smaller than set amounts the left and right set teeth of the first teeth group.

27. A saw blade according to claim 26, wherein

the saw tooth of the second teeth group is disposed between set teeth of the first teeth group.

28. A saw blade according to claim 27, wherein

the second teeth group includes a spur tooth, the number of teeth of the first teeth group and the number of teeth of the second teeth group are the same.

29. A saw blade according to claim 28, wherein

the number of the left and right set teeth of the first teeth group and the number of left and right set teeth of the second teeth group are the same.

30. A saw blade according to claim 29, wherein

the first teeth groups and the second teeth groups are alternately arranged.

31. A saw blade according to claim 30, wherein

the number of teeth of the second teeth group is greater than the number of teeth of the first teeth group.

32. A saw blade according to claim 31, wherein

the number of teeth of the first teeth group is greater than the number of teeth of the second teeth group.

33. A saw blade according to claim 32, wherein

set teeth of the left and right set teeth of the first and second teeth group which are bent in the same direction are continuously arranged.

34. A saw blade according to claim 33, wherein

set teeth of the left and right set teeth of the first and second teeth group which are bent in the same direction are not continuously arranged.

35. A saw blade according to claim 34, wherein

pitches between the teeth are not equal to each other.

36. A saw blade according to claim 35, wherein

the non equal pitches are two kinds of pitches.

37. A saw blade according to claim 36, wherein

a height difference between the teeth of the first teeth group and the teeth of the second teeth group is 0.2 mm or less.

38. A saw blade according to claim 37, wherein

a bottom of a garret of the saw tooth of the second teeth group is located closer to a tip than a garret of the saw tooth of the first teeth group.

39. A saw blade in which a set pattern comprising a combination of a first teeth group having at least a spur tooth and a pair of left and right laterally bent set teeth and a second teeth group having at least a pair of left and right set teeth is appropriately repeated, wherein a tooth height of the saw tooth of the second teeth group is lower than a tooth height of the saw tooth of the first teeth group, a tip pitch including a garret of the saw tooth of the second teeth group is smaller than a tip pitch including a garret of the saw tooth of the first teeth group, set amounts of the left and right set teeth of the second teeth group are equal to or smaller than set amounts the left and right set teeth of the first teeth group.

40. A saw blade according to claim 39, wherein

the saw tooth of the second teeth group is disposed between set teeth of the first teeth group.

41. A saw blade according to claim 40, wherein

the second teeth group includes a spur tooth, the number of teeth of the first teeth group and the number of teeth of the second teeth group are the same.

42. A saw blade according to claim 41, wherein

the number of the left and right set teeth of the first teeth group and the number of left and right set teeth of the second teeth group are the same.

43. A saw blade according to claim 42, wherein

the first teeth groups and the second teeth groups are alternately arranged.

44. A saw blade according to claim 43, wherein

the number of teeth of the second teeth group is greater than the number of teeth of the first teeth group.

45. A saw blade according to claim 44, wherein

the number of teeth of the first teeth group is greater than the number of teeth of the second teeth group.

46. A saw blade according to claim 45, wherein

set teeth of the left and right set teeth of the first and second teeth group which are bent in the same direction are continuously arranged.

47. A saw blade according to claim 46, wherein

set teeth of the left and right set teeth of the first and second teeth group which are bent in the same direction are not continuously arranged.

48. A saw blade according to claim 47, wherein

pitches between the teeth are not equal to each other.

49. A saw blade according to claim 48, wherein

the non equal pitches are two kinds of pitches.

50. A saw blade according to claim 49, wherein

a height difference between the teeth of the first teeth group and the teeth of the second teeth group is 0.2 mm or less.

51. A saw blade according to claim 50, wherein

a bottom of a garret of the saw tooth of the second teeth group is located closer to a tip than a garret of the saw tooth of the first teeth group.