JP2012157931A - Desk top cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a desk top cutting machine, both sides of the saw blade of which can be simultaneously irradiated with sleeveless light.SOLUTION: The desk top cutting machine includes a base part on which a processing material is mountable, a round saw part for vertically oscillating with respect to the base part, the round saw part includes a saw blade and a motor part for rotary-driving the saw blade, a motor housing for covering the motor part, a saw cover for covering the lower half of the saw blade, a gear case for covering the upper half part, and a handle disposed before the saw blade, and the desk top cutting machine cuts the processing material by vertically oscillating the round saw part. A light for illuminating the blade tip and the surroundings of the processing material during cutting is provided in the round saw part.

Description

  The present invention relates to a tabletop cutting machine capable of irradiating both sides of a saw blade.

  5 and 6 show the structure of a conventional tabletop cutting machine.

  The conventional tabletop cutting machine includes an illumination unit 23 at the tip of a manually operable sleeve 22 protruding from above the circular saw unit 21. When the illumination unit 23 is used when the workpiece 35 is cut, it is necessary to change the orientation of the illumination unit 23 and the sleeve 22 by hand so that the position to be irradiated is reached.

  Since there is only one illumination unit 23, the opposite side of the irradiated saw blade 14 becomes a shadow, making it difficult to see. Further, depending on the position where irradiation is desired, the sleeve 22 may be lowered due to the weight of the illumination unit 23 and the irradiation position may not be stable. Further, there is a problem that the protruding illumination portion with the sleeve gets in the way during transportation.

  For example, Patent Document 1 discloses a tabletop cutting machine having a configuration in which an illumination unit is provided at the tip of a tube provided in a cutting unit.

JP2007-228981

  An object of the present invention is to provide a tabletop cutting machine that eliminates the above-mentioned drawbacks of the prior art and that can simultaneously irradiate both sides of a saw blade in an illuminating unit without a sleeve.

  In order to solve the above-described problems, the present invention provides a base portion on which a workpiece can be placed, a circular saw portion that can swing up and down with respect to the base portion, and the circular saw portion is a saw blade. A motor unit that rotationally drives the saw blade, a motor housing that covers the motor unit, a saw cover that covers the lower half of the saw blade, a gear case that covers the upper half, and the front of the saw blade In a tabletop cutting machine that is configured by a handle arranged and swings up and down the circular saw portion to cut a workpiece, the illumination portion that illuminates the blade edge of the saw blade and the periphery of the workpiece at the time of cutting processing We provide a tabletop cutting machine arranged in a circular saw.

  Moreover, it is preferable to provide the illumination part which illuminates the blade edge | tip of the said saw blade and the said workpiece periphery at the time of a cutting process so that rotation with a rotating shaft parallel to a saw blade axis | shaft is possible.

  In addition, it is preferable that a plurality of illumination portions that illuminate the cutting edge of the saw blade and the periphery of the workpiece at the time of cutting are arranged in the circular saw portion.

  Moreover, it is preferable to provide the illumination part which illuminates the blade edge of the saw blade and the periphery of the workpiece at the time of cutting.

  According to the present invention, the illumination unit without the sleeve is arranged on both sides of the handle, so that the illumination unit does not get in the way during transportation, and both sides of the saw blade can be irradiated simultaneously during the operation. As a result, it is possible to provide a tabletop cutting machine that can comfortably perform work in the dark.

The side view which shows one Embodiment of the tabletop cutting machine which becomes this invention The front view which shows one Embodiment of the tabletop cutting machine which becomes this invention Side view showing the cutting position in FIG. AA line sectional view of FIG. Side view of a conventional tabletop cutting machine Front view of a conventional tabletop cutting machine

An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a side view showing an embodiment of a tabletop cutting machine according to the present invention. FIG. 2 is a front view showing an embodiment of a tabletop cutting machine according to the present invention. FIG. 3 is a side view showing the cutting position of FIG. 4 is a cross-sectional view taken along line AA in FIG.

  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 processed material 35 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 workpiece 35 is placed (in this embodiment, the base 1 and the turntable 2) are collectively referred to as a base portion. A fence 3 that supports the side surface of the workpiece 35 is fixed to the upper surface of the base 1. When a blade mouth plate (not shown) having a groove portion into which a saw blade 14 to be described later enters is fixed at the center of the upper surface of the turntable 2 and the lower end of the saw blade 14 is lowered from the upper surface of the turntable 2 when the workpiece 35 is cut. The saw blade 14 penetrates into the groove portion of the blade plate and plays a role of preventing the workpiece 35 from standing on the finished surface. A holder 5 serving as a support member is erected on the rear end of the turntable 2 via the holder shaft 4, and the holder 5 is supported by the holder shaft 4 by making the axis of the holder shaft 4 substantially coincide with the upper surface of the turntable 2. Are pivotally supported around the upper surface of the turntable 2 so as to be tiltable left and right. A slot 2a centered on the holder shaft 4 is formed at the rear part of the turntable 2. A screw 6 (not shown) formed at the tip of the lever 6 is formed on the back of the holder 5 by passing the lever 6 through the slot 2a. Screwed into the hole. When the lever 6 is loosened, the holder 5 tilts within the range of the elongated hole 2a with the holder shaft 4 as a fulcrum. When the lever 6 is tightened, the turntable 2 is tightened between the lever 6 and the holder 5, and the holder 5 is at an arbitrary position. Fixed. The long hole 2a is formed within a range in which the holder 5 can be tilted about 45 degrees to the left and right.

  In a state of being cut at right angles (a state where the holder 5 is erected at a right angle to the turntable 2), two guide bars 7 serving as sliding members parallel to the upper surface of the turntable 2 and parallel to the top and bottom are provided above the holder 5. A support 9 for supporting the guide bar 7 is provided at the front end. Two through-holes 8a are formed between the holder 5 and the support 9 of the guide bar 7, and a sliding holding member (not shown) is provided in the through-hole 8a, and slides into the through-hole 8a of the circular saw holder 8. Two guide bars 7 serving as members are respectively inserted. The knob 10 provided on the side surface of the circular saw holder 8 presses the guide bar 7 and fixes sliding.

  A circular saw portion 12 is pivotally supported above the circular saw holder 8 via a shaft 11 so as to be swingable up and down with respect to the upper surface of the base 1. A spring 13 is provided between the circular saw part holder 8 and the circular saw part 12 to urge the circular saw part 12 upward.

  On the circular saw portion 12, a saw blade shaft 15 is rotatably supported and a saw blade 14 is fixed. The circular saw portion 12 includes a saw cover 19 that covers the lower half of the saw blade 14, a gear case 20 that covers the upper half, a motor portion 21 that rotationally drives the saw blade 14, and a motor housing that covers and supports the motor portion 21. 25 and a handle 26. The handle 26 is disposed in front of the saw blade 14, has a switch 27, and has illumination portions 23a on both sides.

  The illumination unit 23a is rotatably supported by a rotary shaft 24 parallel to the saw blade shaft 15 and is held by the gear case 20 by a knob 28 and a spring 29 serving as pressing means. When the knob 28 is loosened, the direction of the illumination part 23a is changed, and the knob 28 is tightened again, when the circular saw part 12 cuts a workpiece that is wide upward, downward, and wide, which will be described later, the position of the front or rear is appropriate. However, the target position can be irradiated. Moreover, since the illumination part 23a without a sleeve is arrange | positioned in the handle | steering-wheel 26, the illumination part 23a does not become obstructive at the time of conveyance.

  Stoppers 5a and 5b serving as positioning members at the time of tilting are provided on the front surface of the holder 5, and stopper bolts 30 which are tilt adjusting members are positioned on the movement trajectory of the stoppers 5a and 5b behind the turntable 2. , 31 are screwed in the vertical direction. When the holder 5 is tilted, the stoppers 5a and 5b are engaged with the heads of the stopper bolts 30 and 31 at a predetermined tilt angle, and the tilt position of the circular saw portion 12 is set. The stopper bolt 30 is provided so as to engage with the stopper 5a when the holder 5 is tilted to a position of 45 degrees to the left. Further, the stopper bolt 31 is provided so as to engage with the stopper 5b when the holder 5 is inclined to the position of 45 degrees in the right direction. Further, a through hole 2b is provided in the upper part of the turntable 2, and a pin 32 serving as a positioning member at a right angle is pivotally supported so as to be horizontally movable back and forth. When the pin 32 is positioned in FIG. The stopper bolt 33 is screwed in the vertical direction so as to be positioned above. When the holder 5 is in a right-angle cutting position, the tip of the stopper bolt 33 and the outer diameter portion of the pin 32 come into contact with each other.

  In the above configuration, in order to set the circular saw portion 12 in the vertical position and cut the workpiece 35 at a right angle, when the holder 5 is in the vertical position, the pin 32 is moved forward and the stopper bolt 33 which is an inclination adjusting member. The tip of the pin 32 and the outer diameter portion of the pin 32 are brought into contact with each other, the lever 6 is tightened, and the inclined position of the holder 5 can be fixed and cut. In order to cut the workpiece 35, when the switch 27 provided on the handle 26 is pushed and the motor unit 21 is driven to rotate, the saw blade 14 is rotated via the saw blade shaft 15 and a belt and gear (not shown).

  In this state, the handle 26 is held and the circular saw portion 12 is pushed down against the urging force of the spring 13 to cut the workpiece 35. When the saw blade 14 enters the groove portion of the blade plate and the cutting of the workpiece 35 is completed, when the switch 27 is turned off, the saw blade 14 is stopped by the electromagnetic brake. Thereafter, when the circular saw portion 12 is lifted, it returns to the original upper limit position with the urging force of the spring 13. When cutting an angle, the turntable 2 is rotated and the workpiece 35 is cut by the cutting method described above.

  Next, a method for tilting the circular saw portion 12 from side to side will be described. The lever 6 is loosened to release the fixed state of the holder 5 and the holder 5 is tilted leftward or rightward. At this time, since the center of gravity of the motor portion 21 is located almost directly above the holder shaft 4, the circular saw portion 12 can be tilted with a substantially constant force on either the left side or the right side. When the lever 6 is loosened to release the fixed state of the holder 5 and the holder 5 is tilted to the left, the stopper 5a comes into contact with the stopper bolt 30 and the circular saw portion 12 is positioned in a state of 45 degrees to the left. In this state, the lever 6 is tightened to fix the inclined position of the holder 5. After that, the workpiece 35 is cut by the cutting method described above.

  Furthermore, when cutting a wide workpiece by right angle cutting, angle cutting, or inclined cutting, after pressing the workpiece 35 against the surface of the fence 3 and fixing it, the knob 10 is loosened and the handle 26 closes the front side (see FIG. 1). When pulled in the right direction), the circular saw holder 8 and the circular saw 12 move together to move forward. After the handle 26 is pushed down and a cut is given, cutting is performed while sliding the circular saw portion 12 rearward (state of FIG. 3). If the force pushed down is weakened after cutting, the circular saw portion 12 is pushed upward by the spring 13.

  As described above, sliding, right angle, angle, inclined cutting, and combined cutting combining the aforementioned angle cutting method and inclined cutting method are possible, and the illumination parts 23a are arranged on both sides of the handle. This makes it possible to irradiate both sides of the saw blade at the same time in any combined cutting state, thereby improving workability.

DESCRIPTION OF SYMBOLS 1 ... Base, 5 ... Holder, 12 ... Circular saw part, 14 ... Saw blade, 21 ... Motor part,
23a ... Illuminating part, 24 ... Rotating shaft, 28 ... Knob, 29 ... Spring, 35 ... Work material

Claims (4)

A base portion on which a workpiece can be placed;
A circular saw portion that can swing up and down with respect to the base portion, the circular saw portion having a saw blade and a motor portion that rotationally drives the saw blade;
A motor housing covering the motor portion;
A saw cover covering the lower half of the saw blade and a gear case covering the upper half;
In the tabletop cutting machine, which is composed of a handle disposed in front of the saw blade and swings up and down the circular saw portion to cut a workpiece.
A tabletop cutting machine characterized in that an illuminating portion for illuminating the edge of the saw blade and the periphery of the workpiece is disposed in the circular saw portion during cutting processing.   2. The tabletop cutting machine according to claim 1, wherein an illuminating unit that illuminates the cutting edge of the saw blade and the periphery of the workpiece at the time of cutting is provided so as to be rotatable by a rotation axis parallel to the saw blade axis.   The tabletop cutting machine according to any one of claims 1 to 2, wherein a plurality of illumination portions that illuminate a cutting edge of the saw blade and the periphery of the workpiece at the time of cutting are arranged in a circular saw portion. . The tabletop cutting machine according to any one of claims 1 to 3, wherein illumination parts that illuminate a cutting edge of the saw blade and the periphery of the workpiece during cutting are provided on both sides of the handle.

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