JPH08229901A - Circular saw teeth usable in both forward and reverse directions - Google Patents

Abstract

PURPOSE: To provide efficient circular saw teeth capable of performing sawing when moved reciprocally in both of forward and reverse directions and omitting the wastefulness of time and energy. CONSTITUTION: In a circular saw 1 having cutting teeth provided to the entire periphery thereof, circular saw teeth usable in both of forward and reverse directions are characterized in that forward cutting teeth 2 and reverse cutting teeth 3 are alternately provided by two and integrally formed so that the directions of both cutting teeth 2, 3 are reverse. At a time of use, the circular saw 1 is provided to a reversibly rotatable drive shaft X.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circular saw tooth which can be used in both forward and reverse directions.

[0002]

2. Description of the Related Art Conventionally, saw blades used in lumber factories are circular saws, which are used to sequentially lumber wood to a certain thickness. Returning to the position of, and starting cutting in the same direction again, of this reciprocating motion, the return path where the saw tooth returns without any work is extremely loss in time, and the saw tooth is driven during that time as well. However, there is a drawback in that the energy of the driving force is also wasted.

Particularly long materials, such as structural LVL, have a length of 18 m, and have the drawback that the saw blade has a long distance to cut and move, and it takes a long time.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention has been invented to eliminate the above-mentioned drawbacks, and provides saw blades that can be sawn when the circular saw blades move back and forth.・ Efficient circular saw blades that can be used in both forward and reverse directions without waste of energy.

[0005]

According to the present invention for solving the above-mentioned problems, in a circular saw having cutting teeth on the entire circumference, each tooth is provided with cutting teeth in the forward direction and cutting teeth in the reverse direction alternately.
A circular saw tooth for reciprocating use, characterized in that the saw tooth is provided with a drive shaft capable of rotating in the forward and reverse directions, and a plurality of forward-direction cutting teeth and reverse-direction cutting teeth may be provided at every other position. Further, the direction of the repellent type cutting teeth in which the normal direction and the reverse direction cutting teeth are integrally formed is alternately or alternately provided.

[0006]

According to the present invention, when a long timber is cut using a circular saw, the circular saw or the timber is moved and cut using the positive-direction cutting teeth of the circular saw, and the remaining timber is cut. When returning again, the circular saw is rotated in the reverse direction to cut with the cutting teeth in the opposite direction.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to FIG. 1. In a circular saw (1) having cutting teeth on its entire circumference, each of these teeth has a positive direction cutting tooth (2) and a reverse direction cutting tooth (2). The cutting teeth (3) are provided alternately, and the circular saw (1) is used by being axially attached to a drive shaft (X) capable of forward and reverse rotation.

Another embodiment of the present invention will be described with reference to FIG. 2. In a circular saw (1) having cutting teeth on the entire circumference thereof, two positive direction cutting teeth (2) and a reverse direction cutting tooth (2) are used. Two teeth (3) are provided alternately, and the circular saw (1) is used by being axially attached to a drive shaft (X) capable of forward and reverse rotation.

Furthermore, another embodiment of the present invention is shown in FIG.
Explaining based on (a) and (b), a circular saw (1) having cutting teeth on the entire circumference is provided with a repellent cutting tooth (4) integrally formed with forward and backward cutting teeth, The cutting teeth (4) are provided alternately or alternately, and the circular saw (1) is used by being axially attached to a drive shaft (X) capable of forward and reverse rotation.

[0010]

According to the present invention, when cutting wood such as flooring, the circular saw rotates in the forward direction and cuts, and conventionally, the circular saw or the wood is not cut or is left uncut. Even when returning with, the circular saw rotates in the opposite direction and cuts,
As a result, the lumbering time can be shortened, the driving force can be saved, and the cost can be reduced economically.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing another embodiment of the present invention.

FIG. 3 is still another embodiment of the present invention, (a)
Is a front view of a circular saw, and (b) is a front view of a cutting tooth.

FIG. 4 is an explanatory diagram showing a usage state of the present invention.

[Explanation of symbols]

 1 circular saw 2 positive direction cutting teeth 3 reverse direction cutting teeth 4 repellent cutting teeth X drive shaft

Claims (3)

[Claims] 1. A circular saw having cutting teeth on the entire circumference thereof, wherein each tooth is provided with cutting teeth in the forward direction and cutting teeth in the reverse direction alternately, and the circular saw is capable of normal rotation and reverse rotation. A circular saw tooth that can be used in both forward and reverse directions, which is characterized by being installed in the. 2. A circular saw having cutting teeth on the entire circumference thereof, wherein two positive-direction cutting teeth and two reverse-direction cutting teeth are alternately provided, and the circular saw is capable of normal rotation and reverse rotation. The circular saw tooth which can be used in both the forward and reverse directions according to claim 1, wherein the circular saw tooth is used by being provided. 3. A circular saw having cutting teeth on the entire circumference thereof is provided with a repellent cutting tooth integrally formed with forward and backward cutting teeth, and the orientation of the cutting teeth is alternated, or every other cutting tooth is placed. Or, a circular saw tooth that can be used in both forward and reverse directions, characterized in that it is provided in multiple pieces.