JP5666964B2 - Cutting machine - Google Patents

Description

  The present invention relates to a cutting machine, and in particular, a connecting portion between a surface plate and a cutting machine main body is provided on the rear end side of the surface plate, and the relative rotation of the cutting machine main body with respect to the surface plate with the connecting portion as a rotation center. The present invention relates to a cutting machine that adjusts the protruding amount of a circular saw blade from the lower surface of a surface plate by performing a dynamic operation.

  Conventionally, a surface plate placed on a workpiece, a cutting machine main body having a handle that receives a grip from an operator while accommodating a motor as a driving source, and is attached to the cutting machine main body. In addition, a cutting machine is known that includes a circular saw blade that is rotated by being transmitted with a rotational driving force from the motor (see, for example, Patent Documents 1 and 2 below).

  With respect to conventionally known cutting machines such as those disclosed in the following Patent Documents 1 and 2, etc., the motor housing having a large weight with respect to the surface plate is arranged so as to be largely offset, so that it is gripped by the operator. The handle portion was arranged at a position that was largely offset with respect to the circular saw blade in order to balance the entire cutting machine during gripping. Further, the position of the handle portion was largely offset with respect to the center position of the surface plate. Therefore, when the operator pushes the handle portion in the traveling direction, the direction of the pressing force is deviated from the traveling direction of the circular saw blade, so that a force (couple) that tries to turn acts on the surface plate. There was a problem.

  In view of the problems existing in the conventional cutting machine described above, the present inventor has devised a cutting machine that has a completely new apparatus configuration that has not been found in the prior art and has improved operability (Japanese Patent Application). 2010-126699). That is, the inventor has a surface plate placed on a workpiece, a motor housing that houses a motor as a driving source, a handle portion that receives gripping from an operator, and a drive from the motor. A circular saw blade that is driven to rotate by transmitting force, and when the surface plate is viewed from above, the motor housing, the handle portion and the circular saw blade are gathered at a substantially central position in the width direction of the surface plate. He proposed a cutting machine in place.

JP 2006-346909 A JP 2007-12596 A

  The above cutting machine proposed by the present inventor is an epoch-making one having a completely new apparatus configuration that was not found in the prior art, and therefore there is room for various improvements in the actual machine. The present invention relates to an improved technique for the above-described novel cutting machine, and is intended to further improve the dust collection performance.

  The present invention will be described below. In addition, in order to make an understanding of this invention easy, the reference number of an accompanying drawing is attached in parenthesis writing, However, This invention is not limited to the form of illustration by it.

A cutting machine (10) according to the present invention includes a surface plate (11) placed on a workpiece and a motor (22) as a drive source, and a handle portion that receives a grip from an operator. A cutting machine main body (21) having (23), and a circular saw blade (31) attached to the cutting machine main body (21) and driven to rotate by being transmitted with a rotational driving force from the motor (22). The opening on the surface plate (11) for disposing the circular saw blade (31) is arranged on the side where the handle portion (23) is disposed behind the surface plate (11). When defining the end side and defining the opposite side of the handle portion (23) in the surface plate (11) as the front side of the circular saw blade (31), the surface plate (11) and the cutting surface are defined. The connection part (20) with the machine body (21) is the rear end side of the surface plate (11). Provided from the lower surface of the surface plate (11) by rotating the cutting machine body (21) relative to the surface plate (11) with the connection portion (20) as a rotation center. A cutting machine (10) adapted to adjust a protruding amount of the circular saw blade (31), and at least a front side of the circular saw blade (31) is covered with respect to the surface plate (11). A dust collecting cover (41, 81) is provided, and the cutting machine body (21) is rotated integrally with the cutting machine body (21) and covers the circular saw blade (31). A saw cover (45, 85) provided on the connecting portion (20) is drawn with the dust collection cover (41, 81) or the saw cover (45, 85) as a center. Outline shape (41A or 45) along the virtual arc shape line (α) A, 81 or 85), and either one of the dust collection cover (41, 81) or the saw cover (45, 85) is the dust collection cover (41, 81) or the saw cover (45, 85). 85) and a proximity part (45A or 41A or 45B or 41B, 85B or 81B) close to one of them, and the cutting machine body (21) is rotated with respect to the surface plate (11). The dust collection cover (41, 81) and the saw cover (45, 85) are at least partly overlapped in a side view in any movable range of the rotation operation. The saw cover (45, 85) can cover a region including at least part of the side surfaces of the saw cover (45, 85) and the dust collection cover (41, 81). Providing the dispersion prevention cover (49) is characterized in.

  Still further, in the cutting machine (10) according to the present invention, the anti-scattering cover (49) is configured such that when the cutting machine body (21) rotates with respect to the surface plate (11), It is preferable that the dust collecting cover (41, 81) is superposed on any of the movable ranges of the rotation operation.

  Furthermore, in the cutting machine (10) according to the present invention, the dust collection cover (41, 81) is provided with a viewing window (43) for making the inside of the dust collection cover (41, 81) visible. Can be provided.

  In the cutting machine (10) according to the present invention, a discharge path (42) can be provided on the front side of the dust collection cover (41, 81).

  Furthermore, in the cutting machine (10) according to the present invention, the discharge path (42) is rotated when the cutting machine body (21) rotates with respect to the surface plate (11). It can be formed as a path of a size that can collect the scattered chips in any movable range of operation.

  The summary of the invention does not enumerate all necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

  According to the present invention, the dust collection performance of the cutting machine can be further improved.

It is an external appearance perspective view of the cutting machine concerning this embodiment. It is an external appearance side view of the cutting machine concerning this embodiment. It is an external appearance side view which shows the state which removed the scattering prevention cover from the cutting machine which concerns on this embodiment shown in FIG. It is an external appearance side view which shows the state which removed the dust collecting cover from the cutting machine shown in FIG. 2A. It is a longitudinal cross-sectional side view of the cutting machine which concerns on this embodiment shown in FIG. It is a figure at the time of reducing the protrusion amount of the circular saw blade which protrudes from the lower surface of a surface plate in the cutting machine shown in FIG. It is a figure which shows the state which prevented the circular saw blade from protruding from the lower surface of a surface plate in the cutting machine shown in FIG. It is a figure which illustrates an example of the various deformation | transformation forms which this invention can take. It is a figure which illustrates another example of the various deformation | transformation forms which this invention can take. It is a figure which illustrates another example of the various deformation | transformation forms which this invention can take. It is a figure which illustrates another example of the various deformation | transformation forms which this invention can take.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

  FIG. 1 is an external perspective view of a cutting machine according to the present embodiment. 2 is an external side view of the cutting machine according to the present embodiment, and FIG. 2A is an external side view showing a state in which the anti-scattering cover is removed from the cutting machine according to the present embodiment shown in FIG. FIG. 2B is an external side view showing a state where the dust collection cover is further removed from the cutting machine shown in FIG. 2A. 3 is a longitudinal sectional side view of the cutting machine according to the present embodiment shown in FIG. 2, and FIG. 4 is a projection amount of a circular saw blade protruding from the lower surface of the surface plate in the cutting machine shown in FIG. FIG. 5 is a diagram showing a state where the circular saw blade is not protruded from the lower surface of the surface plate in the cutting machine shown in FIG. 3. 3 to 5 are illustrated with some members omitted for convenience of explanation.

  A cutting machine 10 according to the present embodiment includes a surface plate 11 placed on a workpiece, and a handle part 23 that houses a motor 22 that is a drive source and receives a grip from an operator. The main component 21 includes a main saw 21 and a circular saw blade 31 that is attached to the cutting machine main body 21 and is driven to rotate by being transmitted with a rotational driving force from the motor 22.

  The surface plate 11 is configured as a metal flat plate having a substantially rectangular shape. The lower surface of the surface plate 11 is configured as a horizontal plane, and the lower surface of the surface plate 11 configured as the horizontal surface is placed on the workpiece and slid along the upper surface of the workpiece. Thus, the smooth moving operation of the cutting machine 10 can be performed. Further, an opening (not shown) for arranging the circular saw blade 31 and the lower guard 32 is formed at a substantially central position of the surface plate 11. This opening (not shown) is opened in a minimum range in which the circular saw blade 31 and the lower guard 32 can be arranged, and while maintaining the rigidity of the surface plate 11 that serves as a reference for the operation in the cutting machine 10, It is possible to execute operations of devices such as the saw blade 31 and the lower guard 32 that realize a cutting action and a safety action.

  On the rear end side of the surface plate 11, a connecting portion 20 constituted by a rotating shaft and a bearing is formed. This connection part 20 is a member which connects the surface plate 11 and the handle part 23 which the cutting machine main body 21 has in a rotatable state. By this connection part 20, the relative rotation operation | movement of the cutting machine main body 21 with respect to the surface plate 11 centering on the connection part 20 is attained.

  A motor 22 is housed above the cutting machine main body 21, and a circular saw blade 31 is installed in the motor 22 via a drive mechanism 24, which will be described later, so as to be rotatable. That is, the cutting machine main body 21 including the handle portion 23, the drive mechanism 24, and the circular saw blade 31 are integrally configured, and these members are in a state of being rotatable with respect to the surface plate 11. ing. Accordingly, when the handle portion 23 is rotated with the connection portion 20 as the rotation center, the relative position of the circular saw blade 31 with respect to the surface plate 11 can be moved. The amount of protrusion through which the circular saw blade 31 protrudes through the opening shown in the figure can be adjusted, and the cutting depth can be adjusted.

  In order to fix the adjusted protrusion amount of the circular saw blade 31, the position fixing member 13 having an inclined surface and a long hole 13 a along the rotation trajectory of the cutting machine body 21 in front of the surface plate 11. Is installed. A screw (not shown) connected to the cutting machine main body 21 is electrically connected to the long hole 13 a of the position fixing member 13. By tightening the screw with the fixing lever 15, the cutting machine main body 21 and the position fixing member are connected. 13 is fixed. Therefore, the rotation position of the cutting machine main body 21 with respect to the surface plate 11 is adjusted, and the fixing lever 15 is operated in a state where it is in a desired position to tighten a screw (not shown) to cut the position fixing member 13. By fixing the machine main body 21, it is possible to fix the protruding amount of the circular saw blade 31 from the bottom surface of the surface plate 11.

  Various mechanisms can be employed as the drive mechanism 24 for rotationally driving the circular saw blade 31. 3 to 5, the detailed illustration of the drive mechanism 24 is omitted. For example, a small bevel gear (not shown) is installed at the tip of the motor shaft 22 a of the motor 22. A first gear 24a having a bevel gear meshing with a gear (not shown) and having teeth cut on a circular outer periphery; a second gear 24b having outer teeth meshing with the outer teeth of the first gear 24a; The drive mechanism 24 of the present embodiment can be configured by the circular saw blade mounting portion 24c that has outer peripheral teeth that mesh with the gear 24b and can be mounted with the circular saw blade 31. According to such a drive mechanism 24, the rotational driving force of the motor 22 exerted from the motor shaft 22a can be converted into a rotational motion in the vertical direction having a rotation surface parallel to the motor axis by the first gear 24a. Also, this rotational movement in the vertical direction is transmitted as a rotational driving force that causes the circular saw blade 31 to rotationally move through the circular saw blade mounting portion 24c by appropriately reducing the rotational driving force of the motor 22 by the second gear 24b. Therefore, the cutting operation of the circular saw blade 31 on the workpiece can be performed. As for the drive mechanism of the present invention, other known mechanisms such as a drive force transmission mechanism using a pulley and a belt can be employed in addition to a transmission mechanism using gears.

  Further, the cutting machine 10 of the present embodiment is provided so as to cover the circular saw blade 31 protruding from the lower surface of the surface plate 11 in the initial state, and the workpiece is cut when the workpiece is cut. A lower guard 32 configured to retreat from the periphery of the circular saw blade 31 by being pushed is installed. The lower guard 32 is installed to have the same rotation center as that of the circular saw blade 31 and is provided to prevent an operator from touching the circular saw blade 31 by mistake.

  By the way, in the cutting machine 10 according to the present embodiment, the surface plate 11 and the cutting machine main body 21 are configured to be rotatable by a connecting portion 20 formed on the rear end side of the surface plate 11. On the other hand, when the cutting machine main body 21 is relatively rotated, the amount of movement of the rotation center of the circular saw blade 31 with respect to the surface plate 11 is very large. In the cutting machine 10 having such characteristics, the amount of movement of the circular saw blade 31 with respect to the surface plate 11 is particularly large compared to the conventional cutting machine. Therefore, if the configuration of the conventional cutting machine is applied as it is, the dust collection efficiency There was a problem that would decrease.

  Therefore, the cutting machine 10 according to the present embodiment is provided with a new dust collection mechanism that is not provided in the prior art. That is, the dust collection mechanism according to the present embodiment includes a dust collection cover 41 installed on the surface plate 11, a saw cover 45 installed on the cutting machine body 21, and scattering prevention installed on the saw cover 45. And a cover 49.

  As shown in detail in FIGS. 1 and 2A and the like, the dust collection cover 41 is a cover member fixedly installed on the surface plate 11, and the dust collection cover 41 is further on the front side of the circular saw blade 31. It is arranged to cover. In the present embodiment, the dust collecting cover 41 is fixedly installed on the surface plate 11, so that the position of the cutting plate body 21 and the surface plate 11 is the same regardless of the rotational position of the cutting machine body 21 relative to the surface plate 11. There is an advantage that no gap is generated between the dust cover 41 and the dust cover 41.

  The shape of the front side of the dust collecting cover 41, that is, the side on which the chips are scattered has an outer shape (arc shape 41A) along a virtual arc shape line α drawn with the connection portion 20 as the center. . In addition, a discharge path 42 is provided on the front side of the dust collection cover 41. When the cutting machine body 21 rotates with respect to the surface plate 11, the discharge path 42 can collect chips scattered in any of the movable ranges of the rotating operation. It is formed as a path of size and has a high dust collection effect. Further, a duct connection part 42a is formed at the tip of the discharge path 42 in order to connect a duct of a dust collector (not shown). By using this duct connection part 42a, the suitable discharge | emission of the chip to the cutting machine exterior is realizable.

  Further, a viewing window 43 is provided on the side surface of the dust collecting cover 41 so as to make the inside of the dust collecting cover 41 visible. Since this viewing window 43 has a daylighting effect of taking in external light, the visibility of the contact portion between the workpiece and the circular saw blade 31 that is a cutting portion based on the installation of the dust collecting cover 41 is reduced. Minimizing is done.

  Furthermore, the formation position of the edge 41b of the dust collection cover 41 in the periphery of the upper side of the observation window 43 included in the dust collection cover 41 shown in FIG. 2A is determined in consideration of the replacement work of the circular saw blade 31. . That is, the exchanging operation of the circular saw blade 31 is performed by setting the cutting depth of the circular saw blade 31 (that is, the protruding amount by which the circular saw blade 31 protrudes from the bottom surface of the surface plate 11) as depicted in FIG. By adjusting to the minimum (zero), the space for accessing the nut fixing the circular saw blade 31 is secured, and the access space is secured in consideration of the mounting and detaching work of the circular saw blade 31. Thus, the edge 41b of the dust collecting cover 41 is formed. The circular saw blade 31 can be removed by opening the lower guard 32 after removing the nut. Further, if the edge 41b is formed above the position of the present embodiment, there is no opening between the dust collection cover 41 and the saw cover 45, and the scattering prevention cover 49 becomes unnecessary. Since it is necessary to remove the dust collecting cover 41 when the circular saw blade 31 is replaced, the embodiment shown in FIG. 2A is adopted in this embodiment.

  On the other hand, the saw cover 45 is a cover member installed with respect to the cutting machine main body 21, and rotates together with the cutting machine main body 21. Moreover, since the saw cover 45 is a cover member formed so as to cover the upper side and the rear side of the circular saw blade 31, it effectively prevents chips from scattering to the operator side. As shown in detail in FIGS. 3 to 5, the saw cover 45 has an arc shape 41 </ b> A (virtual arc shape line α) that the outer shape of the dust collection cover 41 has in the vicinity of the dust collection cover 41. It has a circular arc shape 45A along. That is, the arc shape 45A of the outer shape of the saw cover 45 is also formed as an outer shape along the virtual arc shape line α drawn with the connecting portion 20 as the center. And when the cutting machine main body 21 performs the rotation operation with respect to the surface plate 11, the arc shape 41 </ b> A of the dust collection cover 41 and the arc shape 45 </ b> A of the saw cover 45 are all within the movable range of the rotation operation. However, they are configured so as to be close to each other and overlap (see each state in FIGS. 3 to 5). Therefore, the circular arc shape 41A of the dust collection cover 41 and the circular arc shape 45A of the saw cover 45 are slidably moved so as not to generate a gap between the two shapes, so that the dust collection cover 41 and the saw cover 45 are formed. It is possible to suitably prevent chips and the like from scattering from the space toward the outside.

  On the further side surfaces of the dust collection cover 41 and the saw cover 45 described above, a scattering prevention cover 49 that can cover at least a part of these two cover members is installed. The scattering prevention cover 49 is a cover member attached to the saw cover 45, and is a member made of a transparent resin material. The anti-scattering cover 49 is attached to the saw cover 45 via a hinge mechanism 46, and can be opened and closed in the lateral direction on the side surface side of the cutting machine 10 using the hinge mechanism 46 as an operation fulcrum for opening and closing operations. It is installed on the saw cover 45. Further, the scattering prevention cover 49 is configured to overlap with the dust collecting cover 41 in any of the movable ranges of the turning operation when the cutting machine body 21 performs the turning operation with respect to the surface plate 11. Has been. Therefore, the dust collection mechanism according to the present embodiment can obtain the dust collection effect by the scattering prevention cover 49 in addition to the dust collection effect of the dust collection cover 41 and the saw cover 45, and therefore has a very high dust collection effect. It can be said that.

  In addition, since the scattering prevention cover 49 is a transparent body and can be opened and closed with respect to the side surface of the cutting machine 10, the inside of the cover can be easily cleaned and, for example, when the work for replacing the circular saw blade 31 is performed. However, the anti-scattering cover 49 does not disturb the work. Therefore, it can be said that the configuration of the present embodiment is very excellent in workability and operability.

  As mentioned above, although preferred embodiment of this invention was described, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the embodiment.

  For example, in the present embodiment described above, the arc shape 41A of the dust collection cover 41 and the arc shape 45A of the saw cover 45 both have an outer shape along a virtual arc shape line α drawn with the connection portion 20 as the center. Was formed. Such arc shapes 41A and 45A are employed so that the dust collection effect can be preferably exhibited regardless of the angle at which the rotational position of the cutting machine body 21 relative to the surface plate 11 is adjusted. Because of that. However, to obtain the same dust collection effect as in the above-described embodiment, only one of the dust collection cover and the saw cover is formed with an arc shape, and either one of the dust collection cover or the saw cover is formed on the other. It suffices if a proximity part close to one side is formed. Such a modification will be described with reference to FIGS.

  As shown in FIG. 6, an arc shape 41 </ b> A similar to the above-described embodiment is formed for one dust collection cover 41, and an arc shape 41 </ b> A of the dust collection cover 41 is formed on the other saw cover 45. What is necessary is just to form the proximity | contact part 45B which can always slide and move. According to the modification shown in FIG. 6, no matter what angle the rotation position of the cutting machine main body 21 with respect to the surface plate 11 is adjusted, the proximity portion 45B is always located in the proximity of the arc shape 41A. Thus, since the dust and the like collected are not released to the outside, a suitable dust collection effect can be obtained.

  In contrast to FIG. 6, as shown in FIG. 7, a circular arc shape 45 </ b> A similar to that of the above-described embodiment is formed on one saw cover 45, and the other dust collection cover 41 has a saw cover 45. It is also possible to form a proximity portion 41B that can always slide in contact with the circular arc shape 45A. Even in the modification shown in FIG. 7, no matter what angle the rotation position of the cutting machine body 21 with respect to the surface plate 11 is adjusted, the proximity part 41B is always located in the proximity of the arc shape 45A. Therefore, it is possible to obtain a suitable dust collection effect because the dust collected in this way is not released to the outside.

  Furthermore, in the present invention, it is also possible to obtain a suitable dust collection effect by forming an arc shape in neither the dust collection cover 41 nor the saw cover 45 and forming adjacent portions with respect to both cover members. Specifically, as shown in FIG. 8, adjacent portions 81B and 85B are formed on both cover members of the dust collection cover 81 and the saw cover 85, and the two adjacent portions 81B and 85B Even if it is in any position, it may be configured to be in sliding contact with the dust collection cover 81 or the saw cover 85. In addition, regarding the shape of the dust collection cover 81 and the saw cover 85 that are in sliding contact with the two adjacent portions 81B and 85B, the virtual arc shape line α in which the portion that is in sliding contact with the two adjacent portions 81B and 85B is drawn with the connecting portion 20 as the center. The outer shape may be formed along the virtual arc shape line α, or may not be formed as the outer shape along the virtual arc shape line α. About the shape of the dust collection cover 81 and the saw cover 85, various deformation | transformation shapes are employable in the range which exhibits the effect similar to the dust collection function which this embodiment mentioned above exhibits.

  In the embodiment described above, regarding the positional relationship between the arc shape 41A of the dust cover 41 and the arc shape 45A of the saw cover 45, the arc shape 41A of the dust cover 41 is on the outside, and the arc shape 45A of the saw cover 45 is on the inside ( That is, it was arranged on the installation side of the circular saw blade 31). However, with respect to this arrangement relationship, for example, as shown in FIG. 9, the arc shape 45 </ b> A of the saw cover 45 may be the outside, and the arc shape 41 </ b> A of the dust collection cover 41 may be the inside. The positional relationship between the circular arc shape 41A of the dust collecting cover 41 and the circular arc shape 45A of the saw cover 45 shown in FIG. 9 is not limited to the embodiment described above, but the present invention described with reference to FIGS. The present invention can also be applied to possible modifications.

  It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.

  DESCRIPTION OF SYMBOLS 10 Cutting machine, 11 Surface plate, 13 Position fixing member, 13a Long hole, 15 Fixing lever, 20 Connection part, 21 Cutting machine main body, 22 Motor, 22a Motor shaft, 23 Handle part, 24 Drive mechanism, 24a First gear, 24b Second gear, 24c Circular saw blade mounting portion, 31 Circular saw blade, 32 Lower guard, 41, 81 Dust collection cover, 41A Arc shape (of dust collection cover), 41b Edge portion, 42 Discharge path, 42a Duct connection portion, 43 Viewing window, 45, 85 saw cover, 45A arc shape (saw cover), 41B, 45B, 81B, 85B proximity part, 46 hinge mechanism, 49 scattering prevention cover, α virtual arc shape line.

Claims (5)

A surface plate placed on the workpiece,
A cutting machine main body having a handle portion that houses a motor as a driving source and receives a grip from an operator;
A circular saw blade that is attached to the cutting machine body and is rotationally driven by a rotational driving force transmitted from the motor;
With
With respect to the opening formed in the surface plate for disposing the circular saw blade, a side where the handle portion is disposed is defined as a rear end side of the surface plate, and the handle portion in the surface plate Is defined as the front side of the circular saw blade,
A connecting portion between the surface plate and the cutting machine main body is provided on the rear end side of the surface plate, and the cutting machine main body is rotated relative to the surface plate with the connecting portion as a rotation center. In a cutting machine adapted to adjust the amount of projection of the circular saw blade from the lower surface of the surface plate,
A dust collection cover is provided for the surface plate so as to cover at least the front side of the circular saw blade ,
The cutting machine body is provided with a saw cover provided to cover the circular saw blade while performing a rotation operation integrally with the cutting machine body,
Either one of the dust cover or the saw cover has an outer shape along a virtual arc shape line drawn around the connection portion,
The other side of the dust collection cover or the saw cover has a proximity part close to either the dust collection cover or the saw cover,
When the cutting machine body rotates with respect to the surface plate, there is a portion where the dust collecting cover and the saw cover overlap at least in a side view in any movable range of the rotating operation. Configured to
A cutter according to claim 1, wherein an anti-scattering cover capable of covering an area including at least a part of a side surface of the saw cover and the dust collecting cover is provided on the saw cover . The cutting machine according to claim 1 , wherein
The scattering prevention cover is a portion that overlaps at least in the side view with the dust collection cover in any movable range of the rotating operation when the cutting machine body rotates with respect to the surface plate. A cutting machine characterized in that it is configured to exist . The cutting machine according to claim 1 or 2 ,
A cutting machine, wherein the dust collection cover is provided with a viewing window for enabling the inside of the dust collection cover to be visually recognized. In the cutting machine of any one of Claims 1-3 ,
A cutting machine characterized in that a discharge path is provided on the front side of the dust collecting cover. The cutting machine according to claim 4 ,
The discharge path has a size capable of collecting chips scattered in any of the movable ranges of the rotating operation when the cutting machine body performs the rotating operation with respect to the surface plate. A cutting machine characterized in that it is formed as a path.

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