JP2001300902A - Apparatus for removing chip of cutter with laser oscillator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove chips sticking to an irradiation part of a laser oscillator with which a cutting position of a cutting edge is accurately irradiated. SOLUTION: The laser oscillator 30 is supported on a front face of a holder 5, and a brush 35 is provieded at an air emission opening 8b from which air flows out backward to a lower part of a circular part 8, and the circular part 8. In a process wherein the circular saw part 8 is transferred from an upper limit position to a low limit position, the brush 35 comes in contact with an irradiation part 30a of the laser oscillator 30, besides a cooling wind from a motor 13 is allowed to blow against the brush and the irradiation part 30a of the laser oscillator 30 to remove the chips sticking to the irradiation part 30a of the laser oscillator 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip removing device for a cutting machine with a laser oscillator, such as a desktop circular saw having a laser oscillator.

[0002]

2. Description of the Related Art There is a cutting machine provided with a laser oscillator which irradiates a cutting material with laser light indicating a cutting position of a cutting blade.

[0003]

When the cutting operation is repeated, chips are scattered and adhere directly to the irradiated portion of the laser oscillator, and chips floating in the air adhere to the irradiated portion of the laser oscillator. There are cases. In some cases, the laser light in the portion where the chips were attached was thinned or blocked, or the laser light was refracted by the chips and did not become a straight line. As a result, there has been a problem that the cutting position of the cutting blade cannot be accurately indicated.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to accurately irradiate a cutting position of a cutting blade using a laser beam.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cutting tool which can be moved up and down toward a base, and a laser for irradiating an upper surface of the cutting material. In a cutting machine equipped with an oscillator,
This is achieved by blowing air on the front surface of the laser oscillator.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
This will be described below. In the present embodiment, the cutting machine is described as a desk circle.

A turntable 2 is embedded in the center of the base 1 so as to be rotatable in the horizontal direction, so that the upper surface of the turntable 2 is flush with the upper surface of the base 1. Base 1
And a cutting material 4 such as wood on the upper surface of the turntable 2.
0 is placed. A fence 3 supporting the side surface of the cutting material 40 is fixed to the upper surface of the base 1. At the rear end of the turntable 2, a holder 5 is erected via a holder shaft 4, and the axis of the holder shaft 4 is positioned so as to substantially coincide with the upper surface of the turntable 2. And is tiltable left and right about the upper surface of the turntable 2.

As shown in FIG. 7, an elongated hole 5a centering on the holder shaft 4 is formed at the rear portion of the holder 5, and a clamp lever 6 is passed through the elongated hole 5a.
The threaded portion formed at the tip of is screwed into the threaded hole formed on the back of the turntable 2. When the clamp lever 6 is loosened, the holder 5 is
When the clamp lever 6 is tightened by tilting within the range of a, the holder 5 is tightened between the turntable 2 and the clamp lever 6 and fixed at an arbitrary position. In addition, the long hole 5a
Is formed in a range in which the holder 5 can be tilted by 45 degrees left and right.

Above the holder 5, a circular saw part 8 constituting the cutting blade body of the present invention is pivotally supported via a shaft 7 so as to be vertically swingable with respect to the upper surface of the base 1. A spring 9 for urging the circular saw 8 upward is provided between the holder 5 and the circular saw 8.
Is provided.

The circular saw portion 8 includes a spindle 16 and a saw blade 1.
0, a saw cover 11 covering the upper half of the saw blade 10, a motor 13 for driving the saw blade 10, a motor shaft 14 to which a cooling fan 27 of the motor 13 is fixed, a transmission belt 23, a handle 26, and the like. Have been.

As shown in FIG. 9, below the gear case 12, a horizontally extending spindle 16 is provided. The spindle 16 is rotatably supported by bearings 17 and 18, and a tip of the spindle 16 is provided with a bolt 19 via a bolt 19. A pulley 20 for fixing the lever blade 10 and transmitting power to the spindle 16 is provided. A motor housing 15 is provided above the gear case 12, and a motor 13 for driving the saw blade 10 is provided therein. A pulley 22 is attached to the tip of the motor shaft 14 of the motor 13 rotatably supported by the bearing 21.
Are provided above the pulley 20.
A transmission belt 23 is stretched between the pulleys 20 and 22. The rotation of the motor 13 by the transmission belt 23 causes the pulley 22, the transmission belt 23, the pulley 20,
The power is transmitted to the saw blade 10 via the spindle 16. The cooling air generated by the rotation of the motor shaft 14 to which the cooling fan 27 is fixed flows out to the outlet 8 b behind the circular saw 8 through the air passage 8 a of the circular saw 8.

A V-shaped projection 5b is mounted on the front surface of the holder 5, and stopper bolts 24 and 25 located on the movement locus of the projection 5b are screwed in a right angle direction on the rear of the upper surface of the turntable 2. ing. When the holder 5 is inclined, the protrusion 5b engages with the head of the stopper bolt 24 or the stopper bolt 25 at a predetermined inclination angle, and sets the inclined position of the circular saw 8. Usually, the stopper bolts 24 and 25 are
The holder 5 is provided so as to engage with the protrusion 5b when the holder 5 is inclined at a position of 45 degrees in the left-right direction.

On the upper surface of the turntable 2, a blade plate (not shown) having a groove at the center into which the saw blade 10 enters is fixed, and when the cutting material 40 is cut, the lower end of the saw blade 10 is placed on the upper surface of the turntable 2. When the cutting material 40 descends further, it penetrates into the groove portion of the blade plate to prevent the cutting material 40 from fuzzing on the finished surface.

In FIG. 3, a support member 32 is fixed to the front surface of the holder 5 and a laser oscillator 30 is housed therein.
The support member 32 is provided with a laser oscillator 30 so that part or all of the laser light L passes below the saw blade 10 when the circular saw portion 8 is at the upper limit position. Laser light L
Is irradiated from the irradiation unit 30a of the laser oscillator 30,
The cutting position of the saw blade 10 when the circular saw 8 is swung downward is shown. In the present embodiment, the irradiation unit 30a of the laser oscillator 30 is located on an extension of the cutting edge 10a of the saw blade 10. Although not shown, the laser oscillator 30 is provided with a switch for irradiating the laser beam L.

A brush 35 made of a number of soft fibers (for example, nylon) constituting a chip removing member and protruding toward the laser oscillator 30 is attached to a lower rear portion of the circular saw portion 8.

In the above configuration, when the circular saw portion 8 is at the upper limit position, the laser beam L emitted from the laser oscillator 30 passes below the cutting edge 10a of the saw blade 10, so that the saw blade 10 Irradiates the upper surface of the cutting material 40 without being disturbed. A black line (not shown) indicating a cutting position is written on the upper surface of the cutting material 40, and the cutting material 40 is moved right and left so that the black line matches the laser beam L. As a result, the blade edge 10a of the saw blade 10 and the black line coincide.

Next, grasp the handle 26 of the circular saw portion 8,
The circular saw 8 is swung downward to cut the cutting material 40. In this process, as shown in FIG. 2, the chips 41a are scattered toward the irradiation unit 30a of the laser oscillator 30, so that the chips 41 may adhere to the irradiation unit 30a.
When the circular saw 8 is lowered, the air outlet 8b at the lower rear of the circular saw 8 and the brush 35 attached to the circular saw 8 approach the irradiation part 30a of the laser oscillator 30 (FIG. 4).
When the brush 35 contacts the irradiation unit 30a (FIG. 5), and the brush 35 is pressed against the irradiation unit 30a, the chips 41 attached to the irradiation unit 30a are swept away (FIG. 6). Further, the cooling air flowing out of the air outlet 8b behind the lower part of the circular saw 8 through the air passage 8a of the circular saw 8
5 and the irradiating section 30a, and the chips 41 are blown off.

[0018]

According to the present invention, when the cutting blade body is lowered, the brush attached to the cutting blade body comes into contact with the irradiating portion of the laser oscillator and the air flows out of the air outlet at the lower rear of the lower portion of the cutting blade body. Is sprayed onto the irradiating portion of the brush and the laser oscillator, and the chips attached thereto are removed, so that the position of the cutting blade can always be accurately irradiated.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment in which the cutting machine of the present invention is applied to a desk circular saw.

FIG. 2 is a side view showing the state of FIG. 1 at the time of cutting;

FIG. 3 is a right side view of FIG. 1 showing a part of the front of the desk circle of FIG. 1;

FIG. 4 is a partial side view showing the periphery of a laser oscillator.

FIG. 5 is a partial side view showing the periphery of a laser oscillator.

FIG. 6 is a partial side view showing the periphery of a laser oscillator.

7 is a left side view of FIG. 1 showing a part of the back surface of the desk circle of FIG. 1;

FIG. 8 is a sectional view taken along line AA of FIG. 1;

FIG. 9 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

5 is a holder, 8 is a cutting blade main body (circular saw part), 10 is a saw blade, 12 is a gear case, 12b is an air outlet, 30 is a laser oscillator, 30a is an irradiation part, 35 is a brush, 40
Is a cutting material, 41 is a chip, and L is a laser beam.

Claims (3)

[Claims] 1. A cutting machine in which a holder is erected on a base portion supporting a cutting material, and a cutting blade portion movable up and down toward the base portion and a laser oscillator for irradiating an upper surface of the cutting material are provided on the holder. A chip removing device for a cutting machine with a laser oscillator, characterized in that chips are removed by blowing air onto the front surface of the laser oscillator. 2. The cutting blade unit according to claim 1, wherein a chip removing member that comes into contact with an irradiation unit of the laser oscillator is provided on the cutting blade unit during the process of moving the cutting blade unit from the upper limit position to the lower limit position. Chip removal device for cutting machine with laser oscillator. 3. A chip removing device for a cutting machine with a laser oscillator according to claim 2, wherein said chip removing member is a brush projecting toward a laser oscillator.