Method of preventing tooth from continuously breaking in band saw blade, saw tooth structure of band saw blade used for the method and band saw blade with tooth having the same saw tooth structure
First Claim
1. A method of preventing a tooth from continuously breaking in a band saw blade, comprising the steps of:
- moving the band saw blade to a longitudinal direction and moving the band saw blade to a cutting direction perpendicular to the moving direction of the band saw blade so as to cut a work;
bringing a projecting portion disposed at a rear position of a surface of relief at the back of a tip in a saw tooth broken into contact with a bottom portion of a cutting groove in the work when the tooth breaking is generated in the saw tooth of the band saw blade; and
limiting a cutting amount of the following saw tooth, thereby preventing the following saw tooth from breaking.
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Accused Products
Abstract
A method of preventing a tooth from continuously breaking in a band saw blade, comprises the steps of: moving the band saw blade to a longitudinal direction and moving the band saw blade to a cutting direction perpendicular to the moving direction of the band saw blade so as to cut a work; bringing a projecting portion disposed at a rear position of a surface of relief at the back of a tip in a saw tooth broken into contact with a bottom portion of a cutting groove in the work when the tooth breaking is generated in the saw tooth of the band saw blade; and limiting a cutting amount of the following saw tooth, thereby preventing the following saw tooth from breaking.
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Citations
8 Claims
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1. A method of preventing a tooth from continuously breaking in a band saw blade, comprising the steps of:
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moving the band saw blade to a longitudinal direction and moving the band saw blade to a cutting direction perpendicular to the moving direction of the band saw blade so as to cut a work;
bringing a projecting portion disposed at a rear position of a surface of relief at the back of a tip in a saw tooth broken into contact with a bottom portion of a cutting groove in the work when the tooth breaking is generated in the saw tooth of the band saw blade; and
limiting a cutting amount of the following saw tooth, thereby preventing the following saw tooth from breaking.
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2. A saw tooth structure in a band saw blade, comprising:
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a saw tooth; and
a projecting portion disposed at a rear end position of a surface of relief in the saw tooth and having a height lower than a projecting height of the saw tooth. - View Dependent Claims (4, 5, 6, 7, 8)
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3. A saw tooth structure in a band saw blade comprising:
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a saw tooth; and
a projecting portion disposed in a surface of relief provided at the rear of a tip of the saw tooth, the projecting portion projecting from the surface of relief to a cutting direction of the band saw blade against the work, wherein a distance between an apex of the projecting portion to a direction closest to the cutting direction at the rear of the moving direction of the band saw blade in the projecting portion and a tip of the saw tooth having the projecting portion is within {fraction (2/3)} of an interval between the saw tooth having the projecting portion and the following saw tooth disposed adjacent to the rear portion of the saw tooth; and
a difference in height between the apex and the tip is within a range between 0.05 mm and 1.0 mm.
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Specification