JP2010214535A - Cutting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting tool capable of attaching/detaching a cutting machine from/to a base and enhancing visibility of a part of a cutting blade for cutting a material to be machined. <P>SOLUTION: A base 51 is constituted of a main base part 52 and a sub base part 53 attachable/detachable to/from the main base part 52. An opening part 51a is partitioned by a cooperation of the main base part 52 and the sub base part 53 in a state of the sub base part 53 mounted in the main base part 52. The sub base part 53 mainly constitutes a part opposed to the other side in relation to one side of a pair of side faces of a saw blade 61. The other part of the base 51 is constituted of the main base part 52. When a circular saw device 50 is used as a stationary type by being mounted on a fixed surface plate 10, the circular saw blade device 50 is used in a removed state of the sub base part 53 from the main base part 52, and thereby the base 51 can be prevented from a hindrance when visually observing the part of the saw blade 61 cutting the material P to be machined and a cutting portion, etc. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cutting tool, and more particularly to a cutting tool in which a cutting machine can be attached to and detached from a base table.

  2. Description of the Related Art Conventionally, there is known a cutting tool in which a hand-held circular saw device as a cutting machine can be attached to and detached from a fixed surface plate as a base. U.S. Pat. No. 4,587,875 (Patent Document 1) describes a cutting tool having this configuration. A base on which an opening through which a cutting blade of the cutting machine passes is fixed to the base stand so as to be swingable, and a cutting machine having a motor and a cutting machine is fixed to the base. The base has a pair of flat bottom and top surfaces, the periphery of the opening is surrounded by the base, and the protruding part of the cutting blade that protrudes from the base opening to the bottom side can be protected by covering with a protective cover It is. A link mechanism is connected to the protective cover, and the cutting machine swings as the base swings, and when the cutting blade approaches the workpiece, the projection cover of the cutting blade covered by the protective cover is covered. As a result, the amount of the cut blade is reduced, the cutting blade is exposed more, and the workpiece can be cut by the exposed portion of the cutting blade.

U.S. Pat. No. 4,587,875

  However, in the cutting tool described in the above publication, as described above, the periphery of the opening is surrounded by the base, and the base interferes with visual inspection when attempting to visually observe the portion of the cutting blade that cuts the workpiece. The visibility of the portion of the cutting blade that cuts the workpiece was poor.

  Then, this invention aims at providing the cutting tool which can attach or detach a cutting machine from a base stand, and improved the visibility of the part of the cutting blade which cut | disconnects a workpiece.

  In order to achieve the above object, the present invention provides a cutting blade that is rotationally driven by a motor, a housing that supports the cutting blade, and a slide that is slidable on a workpiece and is connected to the housing and penetrates the cutting blade. A base having an opening formed therein and capable of cutting the workpiece with the cutting blade; and the cutter can be attached and detached, and the cutter can be swung while the cutter is mounted. And a base table on which the processing material can be placed, and the processing material placed on the base table by swinging the cutting machine while the cutting machine is mounted on the base table. In the cutting tool that can be cut by the cutting blade, the base provides a cutting tool having a main base portion connected to the housing and a sub-base portion removable from the main base portion.

  Since the base has a main base portion connected to the housing and a sub base portion detachable from the main base portion, the sub base portion 53 is used when the cutting machine is mounted on the base table and used as a stationary type. Can be seen through the space from which the sub-base portion 53 has been removed, and the cutting blade part and the cutting location that are cut with respect to the workpiece can be visually observed, and the cutting that is cut with respect to the workpiece. It is possible to prevent the base from being obstructed when viewing the blade portion. As a result, the visibility of the cutting blade can be improved and workability can be improved.

  Here, the motor is disposed on one side of a pair of side surfaces of the cutting blade in the cutting machine, and the sub-base portion mounted on the main base portion is located on the other side of the side surface. Is preferred.

  The motor is disposed on one side of the pair of side surfaces of the cutting blade in the cutting machine, and the sub-base portion mounted on the main base portion is located on the other side of the side surface, so that it cuts the workpiece. The visibility of the cutting blade can be further improved on the side of the other side surface of the cutting blade that is not provided with a motor that obstructs the viewing of the cutting blade portion.

  Further, the main base portion has a contour shape with a notch formed in part, the sub base portion has a shape that matches the notch, and the sub base portion is attached to the main base portion. The sub-base portion and the main base portion cooperate to define the opening, and the cutting base is fixed to the base base by fixing the main base portion to the base base. It is preferable.

  The main base part has a contour shape with a notch formed in part, the sub base part has a shape that matches the notch, and the sub base part is attached to the main base part, so that the sub base part and the main base Since the opening is defined in cooperation with the part, by removing the sub-base part 53 from the main base part, a part of the base that defines the opening is removed, and the cutting blade Visibility can be further improved.

  In addition, the base table includes a support surface having a base surface on which the workpiece is placed, a mounting portion on which the cutting machine can be attached and detached, and a swinging support portion that supports the cutting machine in a swingable manner. The support portion is preferably tiltable with respect to the base surface.

  The base table includes a base surface on which the work material is placed, a support portion having a mounting portion on which the cutting machine can be attached and detached, and a swinging support portion that swingably supports the cutting machine. Since it is possible to incline, the inclined cutting can be performed.

  Moreover, it is preferable that this support part can incline in the direction which goes to this sub base part on the basis of the state perpendicular | vertical with respect to this base surface. Since the support part can be inclined in the direction toward the sub-base part on the basis of the state perpendicular to the base surface, the base of the cutting machine approaches the base table with the inclination. By making the portion a sub-base portion 53 and removing the sub-base portion 53 from the main base portion in advance, it is possible to prevent the base, in particular, the sub-base portion 53 from coming into contact with the base table at the time of the inclination. It can be inclined more greatly.

  In addition, a battery that forms a power source of the motor can be attached to and detached from the cutting machine, and a portion of the cutting machine to which the battery is attached is more than the cutting blade in a state where the cutting machine is attached to the base table. Preferably, the part of the cutting machine is spaced from the pivot axis of the cutting machine.

  The battery that makes up the motor power supply can be attached to and removed from the cutting machine, and the part of the cutting machine to which the battery is attached is farther from the swing axis of the cutting machine than the cutting blade with the cutting machine attached to the base table. Therefore, when the operator swings, the cutter can be easily swung with respect to the base table with a small force due to the weight of the battery. Further, by using a battery as a power source for the motor, portability can be improved when using a cutting machine and a cutting tool.

  The base includes a pair of base portions divided into two by a virtual extension surface of the side surface of the cutting blade, one of the pair of base portions forming the main base portion and the other forming the sub base portion, By attaching the base portion to the main base portion, the sub base portion and the main base portion cooperate to define the opening, and the main base portion is fixed to the base base. More preferably, the cutting machine is fixed to the base table.

  The base consists of a pair of base parts divided into two by a virtual extension surface on the side of the cutting blade. One of the pair of base parts forms the main base part and the other forms the sub base part, and the sub base part serves as the main base part. By mounting, the sub base portion and the main base portion cooperate to define the opening, so that a large portion of the sub base portion 53 that can be detached from the main base portion can be secured. Can be even more inclined.

  Further, the motor is disposed on one side of the pair of side surfaces of the cutting blade in the cutting machine, and the cutting machine covers at least a part of the other side surface of the cutting blade and prevents scattering of cutting waste. It is preferable that a cover is provided and the cover is detachable from the housing.

  The motor is disposed on one side of the pair of side surfaces of the cutting blade in the cutting machine, and the cutting machine has a cover that covers at least a part of the other side surface of the cutting blade and prevents scattering of cutting waste. It is possible to prevent scattering of cutting waste during cutting and further improve the visibility of the cutting blade. In addition, since the cover can be attached to and detached from the cutting machine casing, when the cutting machine is attached to the base table and inclined and cut, the cover can be prevented from coming into contact with the base table by removing the cover. The machine can tilt more greatly.

  Further, the surface of the cover facing the base table with the cutting machine mounted on the base table is inclined so as to be separated from the base table as it is separated from the other side surface of the cutting blade. Is preferred.

  The surface of the cover that faces the base table with the cutting machine mounted on the base table is inclined so as to be separated from the base table as it is separated from the other side surface of the cutting blade. Because it is separated from the base table, when the cutting machine is tilted with the cover attached, the distance until the cover comes into contact with the base table can be increased, and the cutting machine can be tilted more greatly. Can do.

  As mentioned above, this invention can provide the cutting tool which can attach or detach a cutting machine from a base stand, and improved the visibility of the part of the cutting blade which cut | disconnects a workpiece.

The side view which shows the cutting tool by the 1st Embodiment of this invention. The top view which shows the cutting tool by the 1st Embodiment of this invention. The side view which shows the state which started cut | disconnecting a workpiece with the cutting tool by the 1st Embodiment of this invention. The side view which shows the state which cut | disconnected the workpiece with the cutting tool by the 1st Embodiment of this invention. The disassembled side view which shows the cutting tool by the 1st Embodiment of this invention. The side view of the base of the cutting tool by the 1st Embodiment of this invention. FIG. 3 is an exploded plan view showing a state where a sub base portion of the cutting tool according to the first embodiment of the present invention is detached from a main base portion 52. FIG. 5 is an attachment plan view showing a state in which the sub base portion of the cutting tool according to the first embodiment of the present invention is attached to the main base portion 52. The exploded sectional view showing the base of the cutting tool by a 1st embodiment of the present invention. The principal part bottom view which shows the protective cover support member of the cutting tool by the 1st Embodiment of this invention. The exploded plan view which shows the base of the cutting tool by the 2nd Embodiment of this invention. The exploded sectional view showing the base of the cutting tool by a 2nd embodiment of the present invention. The top view which shows the base of the cutting tool by the 2nd Embodiment of this invention. The side view which shows the modification of the cutting tool by the 1st Embodiment of this invention. The top view which shows the fixed surface plate (base stand) of the cutting tool by the 1st Embodiment of this invention. The side view which shows the fixed surface plate (base stand) of the cutting tool by the 1st Embodiment of this invention. The rear view which shows the fixed surface plate (base stand) of the cutting tool by the 1st Embodiment of this invention. The figure which shows the state in which the safety cover of the circular saw main body of the cutting tool by the 1st Embodiment of this invention is located in a 1st position. The figure which shows the state which the safety cover of the circular saw main body of the cutting tool by the 1st Embodiment of this invention was rotated from the 1st position. The fragmentary sectional view which shows the other modification of the cutting tool by the 1st Embodiment of this invention. The perspective view which shows the state before attachment of the circular saw apparatus to the base stand of the cutting tool by the 2nd Embodiment of this invention. The perspective view which shows the state after attachment of the circular saw apparatus to the base stand of the cutting tool by the 2nd Embodiment of this invention. The perspective view which shows the use condition of the cutting tool by the 2nd Embodiment of this invention. The rear view which shows the inclination use condition of the cutting tool by the 2nd Embodiment of this invention. The perspective view of the circular saw apparatus which comprises the cutting tool by the 2nd Embodiment of this invention. The fragmentary sectional view of the circular saw apparatus which comprises the cutting tool by the 2nd Embodiment of this invention. The side view which shows the modification of the circular saw apparatus which comprises the cutting tool by the 2nd Embodiment of this invention. The partial cross section figure of the circular saw apparatus which comprises the cutting tool by the 2nd Embodiment of this invention. The perspective view which shows the modification of the cutting tool by the 2nd Embodiment of this invention. The top view of the circular saw apparatus which shows the modification of the circular saw apparatus which comprises the cutting device by embodiment of this invention.

  A cutting tool according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 7 and FIGS. 10 to 12. As shown in FIG. 1, the cutting tool 1 is an electric tool for cutting a workpiece P, and includes a fixed surface plate 10 and a circular saw device 50. The fixed surface plate 10 includes a base portion 11, a vice device 20, and a support portion 30. The circular saw device 50 corresponds to a cutting machine, and the fixed surface plate 10 corresponds to a base table.

  First, a fixed surface plate (base table) 10 according to the present invention will be described with reference to FIGS. 1 and 2 and FIGS. 10 to 12. The base portion 11 includes an upper surface 10A for placing a tubular processed material P and the like, and a pin 10B serving as a connection portion with the support portion 30. The pin 10B is configured such that its axial direction is parallel to the upper surface 10A, and the front side is the side where the workpiece P is placed relative to the pin 10B in the axial direction of the pin 10B. The opposite side is defined as the rear side. Further, the upper side of the upper surface 10A is defined as the upper side, and the opposite side of the upper side is defined as the lower side. Further, a direction perpendicular to the front-rear direction and a direction perpendicular to the up-down direction is defined as a left-right direction, a direction from the back side to the front side in FIG. 1 is defined as a left direction, and a direction from the front side to the back side in FIG. It is defined as the right direction.

  The base unit 11 is provided with a vise device 20, and a fence (fixed vise) 11 </ b> A is erected on the upper surface 10 </ b> A of the base unit 11 so as to be fixed to the base unit 11. The base portion 11 is formed with a groove 10D that can enter below the upper surface 10A of the base portion 11 when a saw blade 61 serving as a cutting blade swings downward as described later. When the circular saw device 50 is swung most toward the fixed platen 10 side, the saw blade 61 enters a groove portion in a region from a first contact surface to a second contact surface, which will be described later. It is configured to cross the base surface.

  The fence 11A has a substantially L-shaped cross section cut perpendicularly to the longitudinal direction thereof, as shown in FIG. 1 and the like, and the base portion 11 is formed by tightening the L-shaped bottom portion with a lever 11B. It is comprised so that it can fix with respect to. By loosening the lever 11B, the shaft 11B1 of the lever 11B can move relatively in an arc-shaped long hole 11a (FIG. 2 etc.) formed on the bottom surface of the fence 11A forming the L shape. The fence 11 </ b> A can rotate around the rotation shaft 11 </ b> F while maintaining the L-shaped side surface perpendicular to the upper surface 10 </ b> A of the base portion 11. The fence 11A corresponds to a fixing means and a fixing member, and the side surface 11E of the L-shaped fence 11A corresponds to a first contact surface. The fence 11A is provided with a scale along the long hole 11a. When the fence 11A is rotated about the rotation shaft 11F, the rotation angle can be determined by the scale and the mark provided on the base portion upper surface 10A. ing.

  The vice apparatus 20 includes a workpiece contact portion 21 and a contact portion support portion 22. The workpiece contact portion (moving vise) 21 has a long and narrow shape extending in parallel with the upper surface 10A of the base portion 11, and an end of the substantially rod-shaped contact portion support portion 22 is provided at a substantially central position. It is connected.

  The workpiece contact portion 21 is swingable by a shaft 21 </ b> A with respect to one end of the contact portion support portion 22 in a direction parallel to the upper surface 10 </ b> A of the base portion 11. An intermediate portion of the contact portion support portion 22 is engaged with a support portion fixing portion 11C fixed to the upper surface 10A of the base portion 11, and a lever 11D provided on the support portion fixing portion 11C is rotated. The contact portion support portion 22 can be fixed to the base portion 11 via the support portion fixing portion 11C. By loosening the lever 11D, the contact portion support portion 22 (work material contact portion 21) can be moved in the front-rear direction according to the size of the work material P.

  The lever 11B is loosened, the fence 11A is set to a desired rotation angle, the lever 11B is tightened to fix the fence 11A, the lever 11D is loosened, and the workpiece contact portion 21 is moved backward together with the contact portion support portion 22, When the workpiece contact portion 21 is brought into contact with the workpiece P and the lever 11D is tightened, the workpiece P is sandwiched between the side surface of the L-shaped fence 11A and the workpiece contact portion 21, and the base 11 Can be fixed against. The vice apparatus 20 corresponds to a fixing means, the workpiece contact portion 21 corresponds to a moving member, and the contact surface 21A of the workpiece contact portion 21 that contacts the workpiece P corresponds to a second contact surface.

  The support part 30 is mainly comprised from the rocking | fluctuation support part 31, as FIG. 1 shows. One end of the swing support portion 31 is supported by a pin 10B supported by a pin support portion 10C fixed to the base portion 11, and is provided to extend above the upper surface 10A. Therefore, the support portion 30 can swing with respect to the upper surface 10A of the base portion 11 with the pin 10B as the swing axis. At the other end of the swing support portion 31, a mounting portion 31A capable of fixing a circular saw device 50 described later is provided.

  The upper surface 31B of the attachment portion 31A has a substantially planar shape, and a pair of screw holes 31D are formed in the upper surface 31B of the attachment portion 31A. In a state in which the base 51 is in contact with a bottom surface 51A of the base 51 to be described later, the screw 51 is passed through a screw hole 52a formed in the base 51, and the screw 33 is screwed into the screw hole 31D. It can be fixed to the attachment portion 31A.

  A protective cover support member 31C is provided on the attachment portion 31A. The protective cover support member 31C is screwed to the upper surface 31B of the attachment portion 31A and fixed to a portion on one side of the saw blade 61 when the base 51 of the circular saw device 50 is fixed to the attachment portion 31A as will be described later. As shown in FIG. 7, it is formed in a substantially rectangular plate shape, and extends substantially forward from the upper surface 31B in parallel to the upper surface 31B of the attachment portion 31A. The extending end of the protective cover support member 31C is a lower end as a circumferential end portion of a safety cover 65 of the circular saw device 50 described later, and can contact a portion 65A on one side of the saw blade 61. .

  Since the protective cover support member 31 </ b> C is provided, when the circular saw device 50 is used as a so-called stationary mold mounted on the base table, the circular saw device 50 is swung and the workpiece P is moved by the saw blade 61. When cutting, the saw blade 61 can be covered with the safety cover 65 by a second predetermined amount as will be described later, and the safety cover 65 is positioned between the workpiece P and the saw blade 61. Thus, it is possible to prevent the safety cover 65 from hindering cutting. As a result, workability can be improved.

  Further, since the protective cover support member 31C is provided on the attachment portion 31A, when the circular saw device 50 is attached to the base base, the safety cover 65 can be easily attached by the protective cover support member 31C provided on the attachment portion 31A. It can be in a supported state.

  In addition, the base 11 is provided with a chain 11G that serves as a maintaining means for maintaining the circular saw device 50 at that position in a swing lower limit position in a state where the circular saw device 50 described later is attached to the attachment portion 31A. ing. Since the circular saw device 50 can be maintained at the swing lower limit position by hooking the chain 11G on a hooking portion (not shown) of the circular saw device 50, the transportability when the cutting tool 1 is transported is improved. Can be made.

  In addition, as shown in FIG. 12, the support 30 is provided with a spring 30A around the pin 10B, and always urges the swing support 31 upward. Thereby, since attachment part 31A has always faced upwards, workability at the time of attaching circular saw device 50 to attachment part 31A can be improved.

  In addition, an extending portion 32 that forms an acute angle with respect to the upper surface 31B of the mounting portion 31A and extends forward is provided at the rear portion of the mounting portion 31A. The extending part 32 extends linearly, and the tip part extends forward in parallel to the upper surface 31B of the attachment part 31A. When the circular saw device 50 is attached to the attachment portion 31A, the rear end of the saw cover 63, which will be described later, comes into contact with the extended end of the extending portion 32, and the base 51, which will be described later, comes into contact with the extension 51. The saw blade 61 can be in the state of being swung downward most, and the saw blade 61 can be in a state of not swinging with respect to the base 51.

  That is, the circular saw body 60 is fixed to the base 51 by a link 50A and a bolt 50B, which will be described later, for changing the amount of downward projection of the saw blade 61 of the circular saw device 50 from the bottom surface of the base 51. Even in a free state in which the amount of projection of the saw blade 61 from the bottom surface of the base 51 is not set, the base 51 is attached to the attachment portion 31A and the saw cover 63 of the circular saw body 60 abuts the extension portion 32. The state in which the saw blade 61 is swung downward relative to the base 51 can be maintained. Therefore, in a state where the circular saw device 50 is attached to the base table 10, the cutting operation can be performed in a state where the protruding amount of the saw blade 61 from the bottom surface of the base 51 is maintained at the maximum.

  Next, the circular saw device 50 will be described. The circular saw device 50 is positioned on the surface of the base 51 opposite to the bottom surface 51 </ b> A that is a contact surface of the workpiece 51 and is rotated with respect to the base 51. It is mainly constituted by a circular saw body 60 provided so as to be movable.

  Here, the base 51 will be described with reference to FIG. 6A is a side view of the base, FIG. 6B is a top view of the base, and a state in which a sub base portion 53 described later is removed from the main base portion 52, and FIG. 6C is a sub base portion. The state which attached 53 to the main base part 52 is shown. FIG. 6D is a side view of the base. The base 51 includes a main base portion 52 that is rotatably connected to a housing 62, which will be described later, and a sub-base portion 53 that can be attached to and detached from the main base portion 52. The base 51 is on one side and the bottom surface 51A. It has the upper surface 51B which is the other side face arranged oppositely. The bottom surface 51A contacts and slides on the workpiece P, and the base 51 is formed with an opening 51a for projecting the saw blade 61 toward the workpiece P. The main base portion 52 has a substantially rectangular shape in plan view, and has a shape as if a portion including one corner portion is cut out.

  The sub base portion 53 has a shape that substantially matches the notched portion of the main base portion 52, and the outline shape of the base 51 that is configured by mounting the sub base portion 53 on the main base portion 52 is substantially the same. Form a rectangle. The opening 51a is defined by the cooperation of the main base 52 with the sub base 53 attached thereto. That is, the sub-base portion 53 mainly constitutes only a part around the opening 51 a, that is, a portion facing the other side with respect to one side of the pair of side surfaces of the saw blade 61. This portion is constituted by a main base portion 52.

  The sub base 53 is attached to the main base 52 by a pair of pins 53 </ b> A extending from the sub base 53 toward the main base 52. Each pin 53A is inserted into an annular portion 52A protruding from the upper surface 51A of the main base portion 52, and the tip of a bolt 52B provided on the annular portion 52A is brought into contact with the pin 53A to further tighten the bolt 52B. The sub base portion 53 is fixed to the main base portion 52. The main base portion 52 is located on one side of the pair of side surfaces of the saw blade 61 inserted into the opening 51a, and the sub base portion 53 is a pair of saw blades 61 inserted into the opening 51a. It is located on the side of the other side of the side.

  Further, on the upper surface of the base 51 (upper surface of the sub-base portion), when the circular saw device 50 is used as a handy type, the saw blade is located on the extension line of the ruler mounting portion 51C for attaching and detaching a parallel ruler and the saw blade 61. A mark 51D at position 61 is provided. Further, a link for adjusting the protruding amount of the saw blade 61 from the bottom surface 51 </ b> A of the base 51 when the circular saw body 60 is swung with respect to the base 51 around the rotation pin 35 of the swing support portion 34. 50A is provided to protrude from the base upper surface 51B.

  When the circular saw device 50 is used as a handy type, the main base portion 52 is used with the sub-base portion 53 attached. By configuring the base 51 with the main booth portion 52 and the sub-base portion 53, when using as a handy type, the contact portion of the base 51 with the workpiece increases, so that the base 51 slides stably on the workpiece. be able to. When the circular saw device 50 is mounted on the fixed surface plate 10 and used as a stationary type, the sub base portion 53 is used in a state where it is detached from the main base portion 52. By removing the sub-base portion 53 when used as a stationary type, a part of the base 51 defining the opening 51a is removed, and the main base portion which is a space from which the sub-base portion 53 is removed The portion of the saw blade 61 that is cut with respect to the workpiece P, the cut portion, and the like can be observed through the notch portion 52, and the portion of the saw blade 61 that is cut with respect to the workpiece P It is possible to prevent the base 51 from being obstructed when visually observing a cut portion or the like. As a result, the visibility of the saw blade 61 and the cutting location can be improved, and workability can be improved.

  Further, a pair of screw holes 52a are formed in the main base portion 52 so as to be spaced apart from each other in a direction perpendicular to the extending direction of the opening 51a, and the screws 33 (FIG. 5) are engaged with the screw holes 52a. Then, the main base portion 52 can be fixed to the attachment portion 31A by being screwed into the screw hole 31D of the upper surface 31B of the attachment portion 31A.

  In addition, a rotation support portion 34 that rotates the circular saw body 60 with respect to the base 51 is provided near the end on the rear side in the cutting direction of the base 51, and the rotation support portion 34 has a rotation pin 35. Extends parallel to a circular saw shaft 61A described later, and supports the housing 62 so as to be rotatable with respect to the base 51.

  The circular saw body 60 is provided with a saw blade 61, and has a housing 62 that rotatably supports the saw blade 61 and a saw cover 63. The housing 62 is provided on one side of the saw blade 61 (one of a pair of side faces). 1 is located on the back side of the paper surface of the saw blade 61 of FIG. 1 and the upper side of FIG. In the housing 62, a motor (not shown) for driving the saw blade 61 to rotate and a power transmission mechanism (not shown) for transmitting the rotation of the motor (not shown) to the saw blade 61 are incorporated.

  The motor (not shown) is disposed on one side of the pair of side surfaces of the saw blade 61 in the circular saw device 50, and the sub-base portion 53 attached to the main base portion 52 is the other of the pair of side surfaces as described above. Located on the side. Therefore, the visibility of the saw blade 61 is improved on the side of the other side surface of the saw blade 61 that is not provided with a motor that obstructs the portion of the saw blade 61 that is cut with respect to the workpiece P. It can be improved further.

  A handle 64 is provided on the top of the housing 62, and a trigger 64 a that is operated by an operator to start a motor or the like is provided on the handle 64. The saw cover 63 covers the upper half of the saw blade 61, is integrally provided at one end of the housing 62, is connected to the rotation support portion 34 by the rotation pin 35, and is connected to the base 51 with the housing 62 (the circular saw body 60). ) Is arranged to be swingable. Further, between the base 51 and the circular saw body 60, there is provided a fixing release mechanism (not shown) for fixing and releasing the rotational position of the circular saw body 60.

  Further, the circular saw body 60 is provided with a safety cover 65 for covering the lower half of the saw blade 61 when the circular saw device 50 is not used, so as to be rotatable around the circular saw shaft 61A. The cross section of the safety cover 65 cut by a cross section perpendicular to the side surface of the saw blade 61 is substantially U-shaped so as to cover over one side surface and the other side surface of the saw blade 61 as shown in FIG. It has a shape. The safety cover 65 is rotatable along the side surface of the saw blade 61. The safety cover 65 corresponds to a protective cover.

  The protective cover support member 31C described above is in contact with the portion 65A located on one side of the saw blade 61 with respect to the saw blade 61 at the lower end shown in FIG. For this reason, the protective cover support member 31C and the motor, which may become an obstacle when viewing the saw blade 61 cutting the workpiece P, are disposed on one side of the saw blade 61. The members that can be arranged together and obstruct the visual observation of the saw blade 61 cutting the workpiece P can be reduced as much as possible on the other side surface side of the saw blade 61. As a result, the visibility of the saw blade 61 cutting the workpiece P can be improved, and workability can be improved.

  As shown in FIG. 13, a spring 66 serving as a protective cover urging member for covering the saw blade 61 with a larger area in the vicinity of the rotation shaft of the safety cover 65 is provided on the rotation shaft of the safety cover 65. The spring 66 is wound and urges the safety cover 65 to rotate in a direction in which the amount covering the protruding portion of the saw blade 61 from the base bottom surface 51A increases. One end side of the spring 66 is attached to the spring attachment portion 65 a of the safety cover 65, and the other end side is attached to a portion facing the saw blade 61 of the circular saw body 60. When no force is applied to the safety cover 65 from the outside, the safety cover 65 rotates to the first position (FIG. 13A), which is the initial position, by the biasing force of the spring 66, and the bottom 51A side from the opening 51a. It is possible to cover the protruding portion of the saw blade 61 protruding to the first predetermined amount. Since it has such a spring 66, the exposure amount of the saw blade 61 when cutting the workpiece P can be minimized, and the scattering of cutting waste can be suppressed as much as possible.

  Further, when the safety cover 65 comes into contact with the protective cover support member 31C when used as a stationary type, the safety cover 65 is against the biasing force of the spring 66 as shown in FIG. It is comprised so that it may rotate centering on. In other words, when used as a stationary mold, the spring 66 is extended only when the safety cover 65 is rotated in contact with the protective cover support member 31C, and the spring 66 is not extended in the initial state (FIG. 13A). Therefore, the life of the spring 66 can be extended.

  In the circular saw device 50, a battery pack 67 can be attached to and detached from one end of the handle 64. The battery pack 67 is a portion of a circular saw device 50 in which a virtual straight line extending from the axis of the pin 10B to the axis of the saw blade 61 is further extended from the axis of the saw blade 61, that is, as shown in FIG. , And is configured to be attached to a lower portion of the handle 64. This portion is a portion of the circular saw device 50 that is more distant from the swing axis of the circular saw device 50 than the saw blade 61 in a state where the circular saw device 50 is attached to the fixed surface plate 10, so that the operator swings. During operation, the circular saw device 50 can be easily swung with respect to the fixed surface plate 10 with a small force due to the weight of the battery pack 67. Further, by using a battery as a power source of a motor (not shown), portability can be improved when the circular saw device 50 and the cutting tool 1 are used.

  When the workpiece P is cut forward from its rear end face, the safety cover 65 automatically rotates to expose the lower half of the saw blade 61. Further, the extended end of the protective cover support member 31C can come into contact with the lower end as the end portion of the safety cover 65 in the circumferential direction of the saw blade 61. When the circular saw device 50 is mounted on the fixed surface plate 10 and used as a so-called stationary type, an operator attaches the safety cover 65 to be described later before placing the main base portion 52 of the circular saw device 50 on the mounting portion 31A. The projecting portion is rotated until the projecting portion is more exposed than the second predetermined amount. In this state, the main base portion 52 is placed on the attachment portion 31A, and the main base portion 52 is attached to the attachment portion 31A with screws. Secure to. Thereafter, when the worker releases the safety cover 65, the safety cover 65 is rotated by the biasing force of the spring 66, and the lower end of the safety cover 65 comes into contact with the extended end of the protective cover support member 31C, and further rotates. Is configured to be prevented.

  The cover amount of the safety cover 65 that covers the saw blade 61 at the position of the safety cover 65 in the contact state as described above forms a second predetermined amount, and the second predetermined amount corresponds to the predetermined amount. Here, the second predetermined amount means that when the circular saw device 50 swings and the safety cover 65 comes into contact with a part of the fixed surface plate 10 or the workpiece P, the lower end of the safety cover 65 is the above-described first amount. It is an amount located in a region between the first contact surface and the second contact surface, and is a certain amount in a state in which the safety cover 65 is movable when the contact is made. More specifically, This is the amount at which the portion of the saw blade 61 that begins to come into contact with the workpiece P when the workpiece P is cut is exposed. In other words, it is an amount that is a part of the protruding portion of the saw blade 61 that protrudes from the bottom surface 51 </ b> A and that is the amount that is exposed without being covered with the safety cover 65. More specifically, the second predetermined amount refers to at least the bottom surface 51A of the saw blade 61 that protrudes toward the bottom surface 51A of the base 51 in the region between the first contact surface and the second contact surface. This is the amount by which the safety cover 65 is rotated to a position between the position where the protruding end of the protruding portion, which is the farthest part, is exposed and the second contact surface.

  Because of this amount, when the workpiece P is cut by the saw blade 61 by swinging the circular saw device 50, the exposed saw blade 61 can be brought into contact with the workpiece P reliably. P can be reliably cut. Therefore, the operability can be improved, and the safety cover 65 covers the saw blade 61 by the second predetermined amount, so that it is possible to suppress the scattering of cutting waste. Further, the safety cover 65 can be automatically rotated in conjunction with the swing of the circular saw device 50.

  Further, this amount is an amount in which a part of the protruding portion is covered, not the entire protruding portion of the saw blade 61 is exposed. For this reason, as described above, when the safety cover 65 is supported by the protective cover support member 31C, the biasing direction of the spring 66 is compared with the case where the safety cover 65 is rotated so as to expose the entire protruding portion. The force by the support of the protective cover support member 31C acting on the spring 66 in the opposite direction can be reduced, and the shortening of the life of the spring 66 can be suppressed as much as possible.

  An unillustrated air path toward the saw cover 63 is defined between the inner peripheral surface of the housing 62 and the unillustrated motor. A fan (not shown) is mounted in the housing 62 coaxially with a rotation shaft of a motor (not shown) and is driven to rotate. By rotating the fan (not shown), air can be introduced into the housing 62 from a suction port (not shown) formed in the housing 62, and the motor can be cooled by passing the air through an air path (not shown). Further, since the cutting waste generated during the cutting operation is introduced into the dust collecting cover 63a by the rotation of the fan, the visibility of the vicinity of the leading edge of the saw blade 61 is not deposited at the cutting position (near the leading edge of the saw blade 61). Can be improved.

  At the time of cutting in which the circular saw device 50 is mounted on the fixed surface plate 10 and cut as a so-called stationary mold, first, the workpiece P is fixed to the fixed surface plate 10 so as to be immovable by the vice device 20 as shown in FIG. At the same time, the circular saw device 50 is fixed to the mounting portion 31 </ b> A of the fixed surface plate 10. At this time, the safety cover 65 contacts the protective cover support member 31C and rotates by a second predetermined amount. Next, the operator holds the handle 64 and swings the circular saw device 50 in a direction approaching the fixed surface plate 10 as shown in FIG. Since the safety cover 65 is supported by the protective cover support member 31C, the portion of the saw blade 61 that faces the workpiece P is not covered by the safety cover 65 and is exposed, so that the safety cover 65 and the workpiece P are exposed. The workpiece P can be started to be cut by the saw blade 61 in a state in which the safety cover 65 is prevented from being hindered by being positioned between the saw blade 61 and the saw blade 61. Then, as shown in FIG. 4, the workpiece P is cut with a saw blade 61. Here, the cutting ability of the circular saw device 50 is that the saw blade 61 enters the groove 10D when the circular saw body 60 swings to the lower limit position by the swing support portion 34, and the base upper surface 10A and the saw blade 61 have two cutting capabilities. It is possible to cut the workpiece P having a width between the intersections (two places before and after the saw blade 61 intersecting the base portion 10).

  In addition, the safety cover 65 is configured to expose the region of the saw blade 61 facing the workpiece P in the initial state as described above, but when the circular saw device 50 is swung toward the base table 10 side. The portion of the safety cover 65 located on the base base 10 side comes into contact with the workpiece P or the base upper surface 10A, and the safety cover 65 is centered on the saw blade shaft 61A so that the saw blade 61 is exposed in response to the swinging. Rotate. That is, when used as a stationary type, when the circular saw device 50 is fixed to the base 10, a part (65 </ b> A) of the safety cover 65 contacts the protective cover support member 31 </ b> C and rotates by a second predetermined amount, Thereafter, when the saw blade device 50 is swung, the safety cover 65 comes into contact with the workpiece P or the base upper surface 10A and rotates by a second predetermined amount or more. Therefore, since the safety cover 65 is biased in a direction to cover the saw blade 61 by the spring 66 so as to rotate by a minimum amount of rotation angle necessary when cutting the workpiece, the life of the spring 66 is shortened. Can be suppressed.

  Further, when the circular saw device 50 is attached to the base 10, the circular saw device 50 is fixed only by the screw 33, but as shown in FIG. The circular saw device 50 can be easily positioned when attached to the base table 10. In FIG. 13, the saw blade 61 is omitted for convenience of explanation.

  Next, a cutting tool 1 according to a second embodiment will be described with reference to FIGS. In the cutting tool 1 according to the second embodiment, the fixed surface plate 100 has the same configuration as the base portion of a so-called tabletop cutting machine, and the fixed surface plate 100 supports the circular saw device 50 so as to be tiltable. This is different from the first embodiment in that the circular saw device 50 is provided with a removable dust collecting cover 63a. Since points other than these are the same as those in the first embodiment, only differences from the first embodiment will be described.

  The fixed surface plate 100 is configured to include an upper surface 100A on which a processing material P that is a processing member is placed, and a tilting shaft 131 (FIG. 18) that serves as a connection portion with the support portion 130. The tilting shaft 131 is configured such that its axial direction is parallel to the upper surface 100A, and in the axial direction of the tilting shaft 131, the side where the workpiece P, which is a processing member, is placed with respect to the tilting shaft 131 is placed. The front side is defined as the rear side. The upper side of the upper surface 100A is defined as the upper side, and the opposite side of the upper side is defined as the lower side. Further, a direction perpendicular to the front-rear direction and a direction perpendicular to the up-down direction is defined as a left-right direction, a direction from the back side to the front side in FIG. 1 is defined as a left direction, and a direction from the front side to the back side in FIG. It is defined as the right direction.

  As shown in FIG. 15, the base portion 110 that constitutes the fixed surface plate 100 includes a base 110 </ b> A and a turntable 110 </ b> B. The turntable 110B is embedded in the center of the base 110A in a plan view, and the turntable 110B is supported by the base 110A so as to be rotatable in the horizontal direction, that is, to be rotatable about a rotation axis directed in a substantially vertical direction. . The upper surface 110b of the turntable 110B is flush with the upper surface 110a of the base 110A, and the upper surface 110b of the turntable 110B and the upper surface 110a of the base 110A constitute the upper surface 100A of the base portion 110.

  A support portion 130 is provided on one end side (rear side) of the turntable 110B, and an operation portion for rotating the turntable 110B around the rotation axis (not shown) with respect to the base 110A on the other side (front side). A handle 111 is provided. On one end side of the turntable 110B, a tilt support portion 112 for fixing the tilt of the support portion 130 with respect to the base portion 110 is projected upward from the turntable upper surface 110b. The tilt support portion 112 is provided with a scale along the long hole 112b so that the inclination angle of the support portion 130 with respect to the base portion 110 can be grasped.

  As shown in FIG. 15, a pair of fences 113 that support the side surfaces of the workpiece P are vertically provided on the base upper surface 100 </ b> A so as to extend in a straight line in the left-right direction of FIG. 15. ing. At a position between the pair of fences 113 in the center of the upper surface of the turntable 110B, when a saw blade 61 as a cutting blade swings downward as described later, it can enter below the turntable upper surface 110b. A groove 114 is formed. It should be noted that the upper surface of the fence 113 on the groove 114 side is inclined with a distance from the base upper surface 110a becoming shorter as it approaches the groove 114, and the circular saw device 50 is inclined when the circular saw device 50 is inclined as will be described later. Etc. do not hit the fence 113. Further, when the circular saw device 50 is inclined and is slid in the front-rear direction by a guide bar 132 described later, the circular saw device 50, the swinging portion 135 and the like hit the fence 113, and the fence 113 hinders the sliding operation. In order to avoid this, the groove 114 side of the fence 113 is inclined.

  The support portion 130 is configured to be tiltable about the tilt shaft 131 (FIG. 18) with respect to the base portion 110. The support portion 130 is tilted with respect to the base portion 110, and the knob 112 a is tilted to the tilt support portion 112. Since the support portion 130 can be fixed at a desired tilt angle by being inserted into the elongated hole 112b and tightening the support portion 130 and the tilt support portion 112, tilt cutting is possible. One end of the support portion 130 is supported on the turntable 110B of the base portion 110 by the tilt shaft 131, and is provided to extend above the base portion upper surface 100A. A guide support portion 133 for inserting a pair of guide bars 132 arranged in parallel with the base portion upper surface 100 </ b> A is provided at the other end of the support portion 130, and the guide bars 132 are inserted into the pair of holes of the guide support portion 133. Is slidably supported. A stopper 134 is attached to one end of the guide bar 132 so that the guide bar 132 does not come off the slide support portion 133, and one end side of the swinging portion 135 is supported by a pin 136 at the other end. A mounting portion 138 similar to that of the first embodiment is attached to the other end of the swinging portion 133 by a pin 137 so as to be swingable. Therefore, the support part 130 can be tilted with respect to the state perpendicular to the upper surface 100 </ b> A of the base part 110 by the tilting shaft 131. For this reason, it is possible to perform inclined cutting in which cutting is performed with the saw blade 61 inclined with respect to the base upper surface 100A. Further, since the swinging portion 135 and the mounting portion 138 are supported by pins 136 and 137 so as to be swingable in the vertical direction with respect to the guide bar 132 and the swinging portion 135, respectively, as shown in FIG. When the circular saw device 50 is used, the circular saw device 50 is attached to the attachment portion 138 and moved up and down using the pins 136 and 137 as swinging fulcrums, thereby bringing the circular saw device 50 close to the base 100 as shown in FIG. P can be cut with a saw blade 61.

  Further, since the attachment portion 138 is attached to the slide bar 132 via the swinging portion 135, the circular saw device 50 is slid back and forth by the slide bar 132 with the circular saw device 50 attached to the attachment portion 138. Thus, even when the width dimension of the workpiece P is large, the circular saw device 50 can be cut by sliding. A fixing screw 139 for fixing or releasing the fixing of the slide bar 132 at a desired slide position is provided on the slide support portion 133.

  Further, the cutting tool of the present invention is configured so that the attachment portion 138 is located at a position away from the base 100 in the initial state, that is, the state before the cutting operation, as shown in FIG. A spring (not shown) similar to the spring 30A of FIG. 12 is provided around the pins 136 and 137 so as to constantly bias the mounting portion 138 and the swinging portion 135 upward. With this configuration, the attachment portion 138 faces obliquely upward, so that an operator can easily attach the circular saw device 50 and easily place the workpiece P on the base table 100.

  The mounting base 138 according to the present embodiment is provided with a slide rail 138A for receiving an end portion on the side opposite to the saw blade of a base 151 (main base 152) to be described later so that the circular saw device 50 can be easily mounted. It has been. From the state of FIG. 15, by sliding the base 151 along the slide rail 138A, the circular saw device 50 can be easily attached to the mounting base 138 as shown in FIG. 16, and the safety cover 65 is interlocked with the sliding operation. Can automatically abut against the protective cover support member 31C and rotate, thereby eliminating the trouble of manually rotating the safety cover 65 and improving operability. Note that the base 151 is fixed to the mounting portion 138 in the same manner as in the first embodiment.

  With the above configuration, as shown in FIG. 18, the support portion 130 can be inclined in the direction toward the sub-base portion 153 (left side in FIG. 18) with respect to a state perpendicular to the base upper surface 100A. Accordingly, the base 151 of the circular saw device 50 approaches the base upper surface 100A (processed material P). A portion of the base 151 described later approaching the base upper surface 100A is set as a sub base portion 153 as described later, and the sub base portion is preliminarily provided. By removing 153 from the main base portion 152, the visibility of the saw blade 61 is improved, and the base 151, in particular, the sub-base portion 153 is prevented from coming into contact with the base upper surface 100A and the workpiece P during the inclination. The circular saw device 50 can be tilted more greatly.

  Here, the structure of the base 151 in the present embodiment will be described with reference to FIG. The base 151 has a substantially rectangular outline in plan view, and has a shape that can be divided into the main base portion 152 and the sub base portion 153 by a virtual dividing line parallel to the long side at a substantially central position of the short side. There is no. Similarly to the first embodiment, the opening 151a is defined by the cooperation of the main base 152 with the sub base 153 attached thereto. That is, the main base portion 152 constitutes a portion of the base 151 on one side of the virtual extended surface obtained by extending the side surface of the saw blade 61, and the sub base portion 153 is not only a part of the periphery of the opening 151a but also the saw blade. A portion of the base 151 on the other side of the virtual extended surface obtained by extending the side surface 61 is formed.

  Due to such a configuration, the base 151 of the circular saw device 50 approaches the fixed surface plate 100 as the base base as the circular saw device 50 is inclined, but the portion of the sub base portion 153 that can be removed from the main base portion 152 is formed. By securing the sub-base part 153 from the main base part 152 in advance, it is possible to prevent the base 151 from coming into contact with the base table during the inclination, and the circular saw device 50 is inclined more greatly. be able to.

  The main base portion 152 is formed with a pair of screw holes 151A arranged on the right side (upper side in FIG. 8) with respect to the extending direction of the opening 151a, and the screw 33 (FIG. 5) is attached to the screw hole 151A. The main base portion 152 can be fixed to the attachment portion 31A (138) by being engaged with and screwed into the screw holes on the upper surface 31B of the attachment portion 31A (138).

  According to the base 151 according to the present embodiment, the main base portion 152 and the sub base portion 153 are divided into two with respect to the extending direction of the opening portion 151a, so that the main base portion 152 is positioned on the sub base portion 153 side. Since there is no part to be used (the part of the main base part located in the extending direction of the opening 151a), the sub-base part 153 is used when the circular saw device 50 is attached to the base table and used as a stationary type to perform inclined cutting. By removing, the inclination angle can be increased and the visibility of the saw blade 61 can be further improved. Although omitted in FIG. 8, as in the first embodiment, a swing support portion 34 for attaching the circular saw body 60 to the base 151 is provided on the main base portion 152.

  Here, the circular saw device 50 in the present embodiment will be described. As shown in FIG. 19, the dust cover 63 </ b> A for collecting cutting waste with respect to the saw cover 63 is detachably attached to the saw cover 63 by a knob 63 </ b> B. As shown in FIG. 20, the dust collection cover 63 </ b> A is sawtooth on the other side of the side surface of the saw blade 61, which is above the base 151 of the saw blade 61 above the base 151 when mounted on the saw cover 63. It is comprised so that the blade 61 may be covered. Since it has such a dust collection cover 63A, scattering of cutting waste can be suppressed when the workpiece P is cut, and cutting dust is prevented from accumulating near the saw blade 61 when used as a handy type. Therefore, the visibility of the saw blade 61 can be further improved.

  Further, since the dust collecting cover 63A is detachable from the housing 62 (saw cover 63) of the circular saw device 50, when used as a so-called stationary type in which the circular saw device 50 is fixed to the fixed surface plate 100 and used. While the dust collection cover 63A is still attached, the cutting waste can be collected, while the dust collection cover 63A can be prevented from coming into contact with the base 100 by removing the dust collection cover 63A. The circular saw device 50 can be inclined more greatly. Moreover, by forming the dust collecting cover 63A from a transparent material, it becomes easy to grasp the accumulation state of the cutting waste, and it is possible to suppress hindering the visibility of the cutting position. Since the dust collection cover 63A is attached to the saw cover 63 by the knob 63B, it can be easily removed by loosening the knob 63B.

  Further, as shown in FIGS. 21 and 22, the bottom surface 63 a of the dust collecting cover 63 </ b> A facing the fixed surface plate 100 is in a state where the circular saw device 50 is mounted on the fixed surface plate 100, and the other side of the saw blade 61. You may comprise so that it may incline upward so that it may leave | separate from the fixed surface plate 100 as it leaves | separates from a side surface. With such a configuration, since the bottom surface 63a is inclined, it is separated from the fixed surface plate 100. Therefore, as shown in FIG. 22, the circular saw device 50 with the dust collecting cover 63A attached. Can be increased, the distance until the dust collecting cover 63A contacts the fixed surface plate 100 can be made longer, the circular saw device 50 can be inclined more greatly, and cutting dust can be collected. The visibility in the vicinity of the saw blade 61 can be improved.

  The cutting tool of the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims. For example, instead of the slide rail 138A as provided in the attachment portion 138, a guide extending parallel to the extending direction of the protective cover support member 31C is provided on the attachment portion 31A, and the guide portion guided by the guide is used as a base. It may be provided on the bottom surface 51A. And it is set as the structure arrange | positioned so that the front-end | tip of 31 C of protective cover support members may oppose the lower end of the safety cover 65 in the extension direction of 31 C of protective cover support members. With this configuration, similarly to the case where the slide rail is provided, when the base 51 is fixed to the attachment portion 31A, the circular saw device 50 is attached to the attachment portion 31A so that the guide portion is guided by the guide. By sliding the protective cover support member 31 </ b> C against the lower end of the safety cover 65, the safety cover 65 can be rotated, thereby saving the operator from having to rotate the safety cover 65. And operability can be improved. Note that the base itself (portion in the longitudinal direction of the base) may be slid on the guide without providing the guide portion on the base. Furthermore, a guide may be provided in the direction orthogonal to the extending direction as shown in FIG. 14 in addition to the guide extending in parallel with the extending direction of the protective cover support member 31C on the mounting portion 31A. Positioning of the mounting position of the device is facilitated.

  Further, as shown in FIG. 9, an adjustment screw 132A, which is a fine adjustment means capable of finely adjusting the extension length of the extension portion 132, is provided at the distal end portion of the extension portion 132 provided at the rear portion of the attachment portion 31A. Also good. The adjustment screw 132 </ b> A is screwed into a screw hole formed at the distal end portion of the extending portion 132 so that the distal end of the screw contacts the rear portion of the saw cover 63. When the adjusting screw 132A is screwed back and forth to adjust the protruding amount of the adjusting screw 132A and the adjusting screw 132A is brought into contact with the rear portion of the saw cover 63, a dimensional error has occurred in the extending portion 32 or a cutting tool 1, even when the assembly accuracy varies, the saw blade 61 is surely swung downward with respect to the base 51 so that the saw blade 61 swings with respect to the base 51. It can be in a state of not moving. In addition, the protruding amount of the saw blade 61 from the base 51 can be set in advance so that the protruding amount of the saw blade 61 does not fall below the set amount.

  Further, the dust collection cover may be connectable to a dust collector. As shown in FIG. 15 and the like, a dust collector connection port 64C is provided on the anti-swing support part side (battery pack side) of the dust cover 63A. A cap 64E may be detachably attached to the dust collector connection port 64C, and the dust collector may be mounted by removing the cap 64E. By adopting such a configuration, it is possible to prevent the cutting waste from accumulating in the dust collection cover, and to further improve the visibility of the saw blade 61 and the cutting location with the dust collection cover attached. it can.

  Further, in the second embodiment, the configuration in which the circular saw device is slidably attached to the base table has been described. However, as shown in FIG. 23, the slide bar is omitted and the swinging portion 135 is directly connected to the support portion 130. The pin 136 may be supported so as to be swingable. Further, even if the slide type is used, a slide bar is not provided, and the swinging portion 135 can be slid with respect to the pin 136 along the longitudinal direction of the swinging portion 135 or the mounting portion 138 can be slid with respect to the pin 137 May be. Further, the swinging portion 135 (mounting portion 138) is not configured to slide integrally with the slide bar 132 with respect to the slide support portion 133, but the slide bar 132 is fixed to the guide support portion 133, and the slide bar 132 is swung. The moving part 135 may be configured to slide, and the swinging part 135 may be fixed in the same manner as the fixing bolt 139. In other words, regardless of the presence or absence of the slide function, any configuration may be used as long as the circular saw device 50 attached to the attachment portion can swing and tilt with respect to the base upper surface 100A.

  Furthermore, although the circular saw device 50 described above uses the battery pack 67 as a power source for a motor or the like, an AC power source may be used instead of the battery pack. As shown in FIG. 24, in the circular saw device 50, the power cord 160 is connected to the end of the handle 64 on the side opposite to the swing support portion. The attachment portion 161 of the power cord 160 is attached to be rotatable in the direction of the arrow (dotted line) in the drawing by a turning portion 161A. The circular saw body 60, for example, the housing 62 is provided with a hooking portion 162 for hooking the power cord 151 with a screw or integrally with the housing. The hook 162 is provided with an opening 162A so that the power cord 160 can be easily hooked. By hooking the power cord 160 on the hook 162, when the circular saw device 50 is fixed to the base 100 and used as a stationary type, the power cord 160 may interfere with the work or may be accidentally cut by the saw blade 61. Can be prevented. Further, when the circular saw device 50 is used as a handy type, the length of the power cord 160 can be effectively used by removing the power cord 160 from the hooking portion 162 (opening portion 162A). Work at a distant place becomes possible. By using the AC power source, the cutting work time can be greatly prolonged, and the weight of the circular saw device 50 is reduced by the amount of not using the battery pack, so the load on the springs provided around the pins 136 and 137 is reduced. Can be reduced, and a reduction in the life of the spring can be suppressed. The hook 162 does not need to be received by the housing 62 as long as the power cord 160 does not interfere with the operator during the cutting operation, and may be the base 151 or the like. Further, a power cord and an outlet may be provided on the circular saw device 50 base 100, and the power cord 160 of the circular saw device 50 may be connected to the outlet. 160 hooks may be provided.

  The cutting tool of the present invention is particularly useful in the field of cutting tools in which the cutting machine is detachable from the base table.

DESCRIPTION OF SYMBOLS 1 ... Cutting tool 10 ... Fixed surface plate 11A ... Fence 20 ... Vise apparatus 21 ... Work material contact part 22 ... Contact part support part 31A ... Attachment part 31B, 51B ... Upper surface 31C ... Protective cover support member 50 ... Circular saw device 51 ... Base 51A ... Bottom surface 52 ... Main base portion 53 ... Sub-base portion 61 ... Saw blade 62 ... Housing 63 ... Saw cover 65 ... Safety cover 66 ... Spring 67 ... Battery pack

Claims (9)

A cutting blade that is rotationally driven by a motor, a housing that supports the cutting blade, and a base that is slidable on a workpiece and is connected to the housing and has an opening through which the cutting blade passes. A cutting machine capable of cutting the workpiece with a blade;
A base table on which the cutting machine is attachable and detachable, and in a state in which the cutting machine is mounted, the cutting machine is swingably supported and the work material can be placed thereon;
In a cutting tool capable of cutting the workpiece placed on the base table by the cutting blade by swinging the cutting machine with the cutting machine mounted on the base table,
The base has a main base portion connected to the housing and a sub-base portion detachable from the main base portion.   The motor is disposed on one side of a pair of side surfaces of the cutting blade in the cutting machine, and the sub-base portion mounted on the main base portion is located on the other side of the side surface. The cutting tool according to claim 1. The main base portion has a contour shape with a notch formed in part, the sub base portion has a shape that matches the notch, and the sub base portion is attached to the main base portion to The sub-base portion and the main base portion cooperate to define the opening,
3. The cutting tool according to claim 2, wherein the cutting base is fixed to the base base by fixing the main base portion to the base base.   The base table includes a support surface having a base surface on which the workpiece is placed, a mounting portion on which the cutting machine can be attached and detached, and a swinging support portion that swingably supports the cutting machine, The cutting tool according to claim 1, wherein the support portion can be inclined with respect to the base surface.   5. The cutting tool according to claim 4, wherein the support portion can be inclined in a direction toward the sub-base portion with respect to a state perpendicular to the base surface. The cutting machine can be attached and detached with a battery that powers the motor,
The part of the cutting machine to which the battery is mounted is a part of the cutting machine that is farther from the swing axis of the cutting machine than the cutting blade in a state where the cutting machine is attached to the base table. The cutting tool according to claim 4, characterized in that: The base includes a pair of base portions divided into two by a virtual extension surface on the side surface of the cutting blade, and one of the pair of base portions forms the main base portion, and the other forms the sub base portion. Is attached to the main base portion, the sub-base portion and the main base portion cooperate to define the opening,
The cutting tool according to claim 4, wherein the cutting base is fixed to the base base by fixing the main base portion to the base base. The motor is disposed on one side of a pair of side surfaces of the cutting blade in the cutting machine,
The cutting machine has a cover that covers at least a part of the other side surface of the cutting blade and prevents scattering of cutting waste, and the cover is detachable from the housing. Cutting tool as described. The surface of the cover facing the base table in a state where the cutting machine is mounted on the base table is inclined so as to be separated from the base table as it is separated from the other side surface of the cutting blade. The cutting tool according to claim 8.

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