JP4225116B2 - Cutting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutting machine using a laser oscillator such as a band saw machine or a tabletop circular saw.
[0002]
[Prior art]
As a conventional technique, Japanese Patent Laid-Open No. 2000-225603 discloses a cutting machine provided with a laser oscillator capable of irradiating a laser beam on the upper surface of a material to be cut placed on a base portion, or shields a laser beam during cutting. There exists Unexamined-Japanese-Patent No. 2002-178220 by which the cutting machine provided with the light-shielding member to perform was disclosed.
[0003]
Japanese Patent Laid-Open No. 2000-225603 has a laser oscillator, and when the cutting blade portion is at the upper limit position, a part or all of the laser light passes below the cutting blade and irradiates the upper surface of the material. Yes.
[0004]
Japanese Patent Laid-Open No. 2002-178220 is configured such that when the cutting machine main body is moved down to cut the cutting material, the cutting dust collecting guide shields the laser light and does not irradiate the cutting portion of the cutting material. ing.
[Patent Document 1]
JP 2000-225603 A [Patent Document 2]
Japanese Patent Laid-Open No. 2002-178220
[Problems to be solved by the invention]
In the case of a cutting machine as shown in FIG. 8 disclosed in Japanese Patent Laid-Open No. 2000-225603, when the upper surface of the cutting material faces the side where the laser oscillator is located, the upper surface of the cutting material is irradiated with laser light. Therefore, the position of the cutting blade is shown. However, as shown in FIG. 9, when the upper surface of the cutting material faces the opposite side to the laser oscillator, the laser light is blocked by the cutting material, and the laser light is not irradiated on the upper surface of the cutting material, and the cutting blade The position is not shown.
[0006]
An object of the present invention is to eliminate the above-mentioned conventional drawbacks and to allow laser light to irradiate the upper surface of the cutting material even when the upper surface of the cutting material is facing away from the laser oscillator.
[0007]
[Means for Solving the Problems]
The purpose is to slide the laser oscillator horizontally with respect to the base so that part or all of the laser beam passes below the cutting blade and irradiates the upper surface of the cutting material when the cutting blade is in the upper limit position. Freely provided in the holder, when the cutting blade part is in the upper limit position, the laser oscillator moves horizontally in the direction approaching the upper surface of the cutting material, and when the cutting blade part is in the lower limit position, the cutting blade part does not contact the laser oscillator. This is achieved by providing an apparatus in which the laser oscillator moves horizontally in a direction away from the top surface position of the cutting material.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the cutting machine of the present invention will be described with reference to FIGS. 1 is an overall side view of the cutting machine, FIG. 2 is a partial rear view, FIG. 3 is a partial front view, and FIG. 4 is a cross-sectional view taken along line AA in FIG.
[0009]
In the figure, a turntable 2 is embedded in the center of the base 1 so as to be rotatable in the horizontal direction, and the upper surface of the turntable 2 is flush with the upper surface of the base 1. A cutting material 41 such as wood is placed on the upper surfaces of the base 1 and the turntable 2. In the present invention, members on which the cutting material 41 is placed (the base 1 and the turntable 2 in this embodiment) are collectively referred to as a base portion. The fence 3 that supports the side surface of the cutting material 41 is fixed to the upper surface of the base 1. A holder 5 is erected on the rear end of the turntable 2 via a holder shaft 4, and the holder 5 is positioned so that the axial center of the holder shaft 4 substantially coincides with the upper surface of the turntable 2. It is pivotally supported by a fulcrum so that it can tilt right and left around the upper surface of the turntable 2.
[0010]
As shown in FIG. 2, a long hole 5 a centering on the holder shaft 4 is formed from the rear part of the holder 5, and the clamp lever 6 is passed through the long hole 5 a, and a screw part formed at the tip of the clamp lever 6 is turned. It is screwed into a screw hole formed on the back surface of the table 2. When the clamp lever 6 is loosened, the holder 5 is tilted within the range of the elongated hole 5a with the holder shaft 4 as a fulcrum, and when the clamp lever 6 is tightened, the holder 5 is tightened between the turntable 2 and the clamp lever 6 to an arbitrary position. It is fixed with. The long hole 5a is formed within a range in which the holder 5 can be tilted 45 degrees to the left and right.
[0011]
A cutting blade body 8 is pivotally supported above the holder 5 via a shaft 7 so as to be swingable up and down with respect to the upper surface of the base 1. A spring 9 is provided between the holder 5 and the cutting blade body 8 to urge the cutting blade body 8 upward.
[0012]
The cutting blade body 8 includes a cutting blade shaft 16, a cutting blade 10 such as a circular saw, a gear case 12 integrated with a saw cover 11 covering the upper half of the cutting blade 10, and a motor 13 that rotationally drives the cutting blade 10. The motor 13 includes a motor shaft 14, a transmission belt 23, the motor 13, a motor housing 15 that covers and supports the motor shaft 14, and a handle 26.
[0013]
As shown in FIG. 4, a cutting blade shaft 16 is horizontally provided below the gear case 12, and the cutting blade shaft 16 is rotatably supported by bearings 17 and 18. A bolt 19 is attached to one end of the cutting blade shaft 16. The cutting blade 10 is fixed by a pulley 20 for transmitting power to the cutting blade shaft 16. A motor housing 15 is provided above the gear case 12, and a motor 13 that rotationally drives the cutting blade 10 is provided therein. A pulley 22 is provided above the pulley 20 at the tip of the motor shaft 14 of the motor 13 that is rotatably supported by the bearing 21. A transmission belt 23 is stretched between the pulleys 20 and 22. The power of the motor 13 is transmitted from the motor shaft 14 to the cutting blade 10 via the pulley 22, the transmission belt 23, the pulley 20, and the cutting blade shaft 16 by the transmission belt 23.
[0014]
A V-shaped protrusion 5b is mounted on the front surface of the holder 5, and stopper bolts 24 and 25 are screwed in a perpendicular direction so as to be positioned on the movement locus of the protrusion 5b on the rear surface of the turntable 2. Yes. When the holder 5 is tilted, the projection 5b is engaged with the head of the stopper bolt 24 or the stopper bolt 25 at a predetermined tilt angle, and the tilt position of the cutting blade body 8 is set. Normally, the stopper bolts 24 and 25 are provided so as to engage with the protrusion 5b when the holder 5 is inclined at a 45 degree position in the left-right direction.
[0015]
A blade mouth plate (not shown) having a groove portion into which the cutting blade 10 enters at the center is fixed on the upper surface of the turntable 2, and when the lower end of the cutting blade 10 is lowered from the upper surface of the turntable 2 when the cutting material 41 is cut. , It penetrates into the groove portion of the blade plate and plays the role of preventing the cutting material 41 from standing on the finished surface.
[0016]
In FIG. 3, the support member 32 is fixed to the holder 5, and the laser oscillator 30 is inserted into the support member 32 so as to be horizontally movable in the front-rear direction as shown in FIG. The laser beam L is irradiated from the irradiation unit 30a of the laser oscillator 30, and the support member 32 has a part or all of the laser beam L passing below the cutting blade 10 when the cutting blade unit 8 is at the upper limit position. A laser oscillator 30 is provided so as not to be a shadow of the cutting material 41. Although not shown, the laser oscillator 30 is provided with a switch for irradiating the laser beam L. Moreover, in this embodiment, the irradiation part 30a of the laser beam L of the laser oscillator 30 is located on an extension line of the cutting edge 10a of the cutting blade 10.
[0017]
In the above configuration, when the cutting blade portion 8 is at the upper limit position, when the upper surface of the cutting material 40 faces the opposite side to the laser oscillator 30, the laser light L is blocked by the cutting material 41, and the laser light L is Although the upper surface of the cutting material 41 is not irradiated and the position of the cutting blade 10 is not shown, the laser light L emitted from the laser oscillator 30 is cut by moving the laser oscillator 30 horizontally in a direction away from the holder 5. The laser beam L is irradiated to the upper surface of the cutting material 41 without passing through the lower edge 10a of the ten cutting edges 10 and being obstructed by the cutting blade 10 and without being shaded by the cutting material 41.
[0018]
Next, when cutting the cutting material 41, the laser oscillator 30 is manually moved in the direction of the holder 5 as shown in FIG. 6 so that the cutting blade portion 8 does not contact the laser oscillator 30.
[0019]
As another embodiment, as shown in FIG. 7, when the cutting blade portion 8 swings from the upper limit position to the lower limit direction, the laser oscillator 30 is linked to the cutting blade portion 8 using the link 51 or the like. It is also good.
[0020]
In addition, although this embodiment demonstrated as an example this cutting machine of the table-top round which rocks a cutting blade, it is applicable also to cutting machines, such as a rocking-type band saw board.
[0021]
【The invention's effect】
According to the present invention, even when the upper surface of the cutting material is facing away from the laser oscillator, the laser light emitted from the laser oscillator can be moved to the upper surface of the cutting material by horizontally moving the laser oscillator in the front-rear direction. Can be irradiated.
[Brief description of the drawings]
FIG. 1 is an overall side view of a cutting machine showing an embodiment of the present invention.
FIG. 2 is a partial rear view of the cutting machine.
FIG. 3 is a partial front view of the cutting machine.
4 is a cross-sectional view taken along line AA in FIG.
5 is a partial cross-sectional view taken along line BB in FIG. 3;
FIG. 6 is an overall side view of a cutting machine showing an embodiment of the present invention.
FIG. 7 is an overall side view of a cutting machine showing another embodiment.
FIG. 8 is an overall side view of a conventional cutting machine.
FIG. 9 is an overall side view of a conventional cutting machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 5 ... Holder, 8 ... Cutting blade main body, 10 ... Cutting blade, 30 ... Laser oscillator, 32 ... Supporting member, 41 ... Cutting material, 51 ... Link, L ... Laser beam.

Claims (1)

  A holder erected on the base portion supporting the cutting material;
  A fence provided on the upper surface of the base portion and having a support surface on the opposite side of the holder to support the cutting material together with the base portion;
  A tabletop cutting machine provided with a cutting blade part provided on the holder and swingable up and down with respect to the base part,
  When the cutting blade part is at the upper limit position, a laser oscillator that irradiates the upper surface of the cutting material is provided in the holder so that part or all of the laser light passes below the cutting blade,
  The laser oscillator is provided so as to be horizontally movable in the front-rear direction from the holder to the vicinity of the support surface of the fence, and in conjunction with the swinging operation of the cutting blade portion in the lower limit direction, from the vicinity of the support surface of the fence Cutting machine characterized in that it can be moved horizontally to the side.

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