JP2018083263A - Desk cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a desk cutter which enables a cut part to tilt to a maximum tilt angle without causing interference between a vice and the cutting part and inhibit deterioration of the workability.SOLUTION: A desk cutter includes a fixing mechanism 7 which may fix a cut material. A fixing mechanism holding part 23A which holds the fixing mechanism 7 is provided at a base part 2. The fixin mechanism 7 has: a first shaft 71 held by the fixing mechanism holding part 23A; a second shaft 72 which is supported by the first shaft 71 so as to move relative to the first shaft 71; and a pressing part 73 which is supported by the second shaft 72 and may press the cut material. When a circular saw blade support part 4 is tilted to a maximum tilt angle, the first shaft 71 and the circular saw blade support part 4 are separated.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a tabletop cutting machine.

  Conventionally, tabletop cutting machines have been widely used to cut wood, pipes, etc. (materials to be cut). As such a tabletop cutting machine, there are a base portion having a base on which a workpiece (cutting material) can be placed and a turntable embedded in the base so as to be horizontally rotatable, and a support portion erected from the base portion. A tabletop circular saw having a cutting part supported by a support part is known (Patent Document 1). The cutting part of the tabletop circular saw accommodates a cutting blade for cutting a workpiece and a motor for rotationally driving the cutting blade. In addition, the cutting part is configured to be tiltable in a direction perpendicular to the side surface of the cutting blade with respect to the base so that the cutting part can be cut at an angle from the direction perpendicular to the upper surface of the base (tilted cutting). The base part is detachably provided with a vise for pressing the material to be cut between the base part when the material to be cut is placed on the base part. The vise has a shaft (shaft) that extends upward from the base portion and a pressing portion that can move up and down with respect to the shaft so that the position of pressing the workpiece can be adjusted according to the height of the workpiece. ing.

  In such a desktop circular saw, the work is performed in a state in which the material to be cut is placed on the base portion and the material to be cut is fixed to the base portion using a vise.

JP2012-116086

  In the tabletop cutting machine configured as described above, the cutting portion can be largely tilted from a direction perpendicular to the upper surface of the base to a predetermined angle (maximum tilt angle) so that tilt cutting at a large angle is possible. It is configured. Moreover, in order to be able to adjust the position which presses a to-be-cut material according to the height of a to-be-cut material, the shaft of a vise has fixed height. For this reason, in the state where the vise is mounted on the base portion, the upper shaft of the vise is positioned on the tilting locus of the cutting portion. That is, when the work piece is fixed to the base part using a vise and the work (tilted cutting) is performed by tilting the cutting part, the cutting part is at the maximum tilt angle. However, there is a possibility that the workability may be lowered due to interference even though it is not tilted.

  Accordingly, an object of the present invention is to provide a tabletop cutting machine that can tilt the cutting portion to the maximum tilting angle even in a state where the vise is mounted on the base portion, and can suppress a decrease in workability. To do.

  In order to solve the above-described problems, the present invention accommodates a driving source, a base portion having a mounting surface on which a material to be cut can be mounted, and the driving source, and receives the rotational force of the driving source. A cutting blade support that can be attached to and detached from a cutting blade that can rotate about an axis, and a base that supports the cutting blade, and the cutting blade support extends substantially perpendicular to the axial direction of the cutting blade. However, it is a tabletop cutting machine comprising: a holder portion that supports a tilting angle extending about a tilting axis extending substantially parallel to the mounting surface, and a fixing mechanism that can fix the material to be cut. The base portion is provided with a fixing mechanism holding portion for holding the fixing mechanism, and the fixing mechanism is movable relative to the first portion and the first portion held by the fixing mechanism holding portion. A second portion supported by the first portion and a second portion supported by the second portion. A pressing portion capable of pressing the material to be cut, and when the cutting blade support portion is tilted by the predetermined angle, the first portion and the cutting blade support portion are separated from each other. And tabletop cutting machine.

  According to the tabletop cutting machine having the above-described configuration, the first portion of the fixing mechanism and the cutting blade support portion are separated from each other even when the cutting blade support portion tilts to a predetermined angle around the tilting axis. Furthermore, since the second part supported by the first part is movable relative to the first part, the second part and the pressing part are separated from the cutting blade support part further than the first part. Can be positioned. Therefore, even when the cutting blade support portion is tilted to the maximum tilt angle, the fixing mechanism and the cutting blade support portion do not interfere with each other, and it is possible to prevent the workability from being lowered.

  In the above configuration, the second portion is configured to be movable in a first direction perpendicular to the placement surface, and the second portion is moved in the first direction, whereby the pressing portion is moved in the first direction. It is preferable to be configured to be movable.

  According to such a configuration, as the second portion moves in the first direction, the pressing portion is configured to be movable in the first direction. It is possible to fix the cutting blade to the cutting blade support portion, and the cutting blade support portion is greatly moved in the first direction by tilting.

  In the above configuration, the first portion extends in the first direction, and is configured to be rotatable about an axis extending through the first portion in the first direction. The first portion, the second portion, Is connected by a first arm extending in a second direction parallel to the placement surface, and rotating the first part around an axis extending in the first direction through the first part, It is preferable that the second portion is configured to be movable.

  According to such a configuration, as the first portion rotates, the second portion located at a position different from the first portion in the second direction is configured to be movable. It becomes possible to fix the material to be cut in a wide range of surfaces.

  In the above configuration, the second part is configured to be rotatable around an axis extending through the first arm in the second direction, and the second part is passed through the first arm in the second direction. It is preferable that the pressing portion is configured to be movable in the first direction by rotating about the extending axis.

  According to such a configuration, since the pressing portion is configured to be movable in the first direction as the second portion rotates, it is possible to fix a material to be cut having a large height to the base portion. It becomes possible.

  In the above configuration, the first arm is configured to be movable in the second direction, and the pressing unit is configured to be movable in the second direction by moving the first arm in the second direction. It is preferable that

  According to such a configuration, as the first arm moves in the second direction, the pressing portion is configured to be movable in the second direction, so that the workpiece is cut in a wide range of the mounting surface of the base portion. The material can be fixed.

  In the above configuration, the second portion extends in the first direction and is configured to be rotatable around an axis extending through the second portion in the first direction. The second portion and the pressing portion are The pressing portion is connected by a second arm extending in a second direction parallel to the placement surface, and the second portion is rotated about an axis passing through the second portion and extending in the first direction. The part is preferably configured to be movable.

  According to such a configuration, as the second portion rotates, the pressing portion located at a position different from the second portion in the second direction is configured to be movable. It becomes possible to fix the material to be cut in a wide range.

  Further, it is preferable that the first portion is detachably held by the fixing mechanism holding portion.

  According to such a configuration, since the fixing mechanism is configured to be detachable from the fixing mechanism holding portion of the base portion, it is easy to carry.

  According to the tabletop cutting machine of the present invention, even when the fixing mechanism is mounted on the base portion, interference between the cutting portion and the fixing mechanism can be suppressed, and deterioration in workability can be suppressed.

It is a front view which shows the external appearance of the tabletop circular saw concerning the 1st Embodiment of this invention, and has shown the case where the tabletop circular saw has taken the 1st attitude | position. It is an enlarged view which shows the right part of the base part of the desk circular saw concerning the 1st Embodiment of this invention, and has shown the state in which the fixing mechanism is not attached to the fixing mechanism holding | maintenance part. It is an enlarged view which shows the right part of the base part of the desk circular saw concerning the 1st Embodiment of this invention, and has shown the state in which the fixing mechanism is attached to the fixing mechanism holding | maintenance part. It is a front view which shows the external appearance of the tabletop circular saw concerning the 1st Embodiment of this invention, and has shown the case where the tabletop circular saw has taken the 2nd attitude | position. It is a perspective view which shows the external appearance of the fixing mechanism of the desktop circular saw concerning the 1st Embodiment of this invention. It is a right view which shows the external appearance of the tabletop circular saw concerning the 1st Embodiment of this invention, The state which has fixed the timber which is an example of a to-be-cut material on the mounting surface of a base part with a fixing mechanism. Show. It is a top view which shows the external appearance of the base part and fixing mechanism of the desk circular saw concerning the 1st Embodiment of this invention. It is a perspective view which shows the external appearance of the fixing mechanism of the desktop circular saw concerning the 2nd Embodiment of this invention. It is a perspective view which shows the external appearance of the fixing mechanism of the desk circular saw concerning the 2nd Embodiment of this invention, and a 1st shaft is relatively moved to an up-down direction with respect to a 1st arm from the state shown by FIG. Shows the state. It is a perspective view which shows the external appearance of the fixing mechanism of the desk circular saw concerning the 3rd Embodiment of this invention. It is a perspective view which shows the external appearance of the fixing mechanism of the desk circular saw concerning the 3rd Embodiment of this invention, and shows the state which the 2nd shaft rotated centering around the shaft center L from the state shown by FIG. ing. It is a perspective view which shows the external appearance of the fixing mechanism of the desk circular saw concerning the 4th Embodiment of this invention. It is a perspective view which shows the external appearance of the fixing mechanism of the desk circular saw concerning the 4th Embodiment of this invention, and a sliding part is a radius of a 1st shaft with respect to a 1st shaft from the state shown by FIG. A state of relative movement in the direction is shown. It is a perspective view which shows the external appearance of the fixing mechanism in the conventional tabletop circular saw.

  A tabletop circular saw 1 as an example of a tabletop cutting machine according to an embodiment of the present invention will be described with reference to FIGS. First, a tabletop circular saw 1 according to a first embodiment of the present invention will be described with reference to FIGS.

  The tabletop circular saw 1 is an electric cutting tool for cutting wood, an aluminum sash or the like (a material to be cut). As shown in FIG. 1, a tabletop circular saw 1 includes a base portion 2, a holder portion 3, a circular saw blade support portion 4 to which a circular saw blade P is detachably attached, a motor 5, and a handle portion. 6 and a fixing mechanism 7. FIG. 1 is a front view showing the appearance of the tabletop circular saw 1, and shows the case where the tabletop circular saw 1 is in the first posture. In the following description, the desk circular saw 1 is assumed to take the first posture shown in FIG. 1 unless otherwise specified.

  In the following description, “up” shown in FIG. 1 is defined as an upward direction, “down” is defined as a downward direction, “right” is defined as a right direction, and “left” is defined as a left direction. In FIG. 1, the direction from the paper surface to the front is defined as the front direction, and the direction from the paper surface to the back is defined as the rear direction. References to dimensions, numerical values, and the like in this specification include not only dimensions and numerical values that completely match the relevant dimensions and numerical values, but also substantially identical dimensions and numerical values (for example, within the range of manufacturing errors). ). Similarly, “identical”, “perpendicular”, “parallel”, “match”, and the like include “substantially identical”, “substantially orthogonal”, “substantially parallel”, and “substantially match”.

  As shown in FIGS. 1 and 2, the base portion 2 is provided on the base 21 that can be placed on the floor surface, the turntable 22 that is rotatably supported by the base 21, and the base 21. A right fence portion 23 and a left fence portion 24. FIG. 2 is an enlarged view showing a right portion of the base portion 2 of the tabletop circular saw 1. The base portion 2 is an example of the “base portion” in the present invention.

  The base 21 is a base part of the table-top circular saw 1, and includes a base body 21A, a right leg portion 21B, and a left leg portion 21C.

  The base body 21A has a substantially circular shape in plan view, and a rotation shaft (not shown) extending in the vertical direction is provided at the substantially center of the base body 21A in plan view. The right leg portion 21B and the left leg portion 21C are portions that are grounded to the floor surface or the like, and are provided on each of the right portion and the left portion of the base body 21A. The right leg portion 21B and the left leg portion 21C are configured symmetrically with respect to a virtual plane that passes through the center of the base body 21A in plan view and is orthogonal to the left-right direction, and the upper surfaces of the right leg portion 21B and the left leg portion 21C, respectively. The right placement surface 21D and the left placement surface 21E are defined.

  The turntable 22 has a substantially circular shape in plan view, and is supported on a rotation shaft (not shown) of the base body 21A so as to be rotatable clockwise / counterclockwise in plan view with respect to the base body 21A. The upper surface 22A of the turntable 22 is substantially flush with the right mounting surface 21D and the left mounting surface 21E of the base 21, and is cut by the upper surface 22A, the right mounting surface 21D, and the left mounting surface 21E of the turntable 22. A placement surface for placing the material is formed. In addition, a side handle 22B for rotating the turntable 22 relative to the base body 21A projects forward from the front portion of the turntable 22. The upper surface 22A, the right placement surface 21D, and the left placement surface 21E of the turntable 22 are examples of the “placement surface” in the present invention.

  The right fence portion 23 includes a fence 23H that abuts a material to be cut during work, a fixing mechanism holding portion 23A to which the fixing mechanism 7 is detachably attached, and an extending portion 23G.

  On the front surface of the fence 23 </ b> H, a pressing surface 23 </ b> I that abuts a material to be cut during work is defined. The pressing surface 23 </ b> I is configured to be substantially orthogonal to the mounting surface of the base portion 2.

  The fixing mechanism holding part 23A has a base part 23B.

  The base portion 23B extends in the left-right direction, and has a predetermined dimension (height) in the up-down direction, as indicated by a dotted line in FIG. As shown in FIGS. 1 and 2, the right part and the left part of the base part 23B are fixed to the right leg part 21B of the base 21 by bolts 23E and 23F, respectively. The base part 23B has a cylindrical part 23C and a first shaft fixing part 23D.

  As indicated by a dotted line in FIG. 1, the cylinder portion 23C extends upward from the upper surface of the base portion 23B. The cylinder portion 23C is located between the bolt 23E and the bolt 23F in the left-right direction. As shown in FIG. 2, the cylindrical portion 23 </ b> C has a substantially annular shape in plan view, and a through hole 23 a having a predetermined diameter and extending in the vertical direction is formed at the center thereof. The through hole 23a penetrates to the bottom surface of the base portion 23B.

  As shown in FIG. 2, the first shaft fixing portion 23D has a substantially cylindrical shape extending rearward from the rear portion of the cylindrical portion 23C. As shown in FIG. 3, the first shaft fixing portion 23D has a screw hole (not shown) that extends in the front-rear direction and can be screwed into the screw 23J. A screw hole (not shown) of the first shaft fixing portion 23D communicates with the through hole 23a. FIG. 3 is an enlarged view showing the right part of the base portion 2 of the tabletop circular saw 1, and shows a state in which the fixing mechanism 7 is attached to the fixing mechanism holding portion 23A.

  As shown in FIG. 2, the extending portion 23G extends leftward from the left end portion of the fixing mechanism holding portion 23A, and the left end portion is formed in a substantially triangular shape in plan view.

  As shown in FIG. 1, the left fence portion 24 includes a fixing mechanism holding portion 24A and a fence 24B. On the front surface of the fence 24B, a pressing surface 24C that abuts a material to be cut during work is defined. The pressing surface 24 </ b> C is configured to be substantially orthogonal to the mounting surface of the base portion 2. The fixing mechanism holding part 24A and the fixing mechanism holding part 23A of the right fence part 23 are both configured to be able to attach and detach the fixing mechanism 7, and relate to a virtual plane that passes through the center of the base body 21A in plan view and is orthogonal to the left-right direction. The description is omitted because it is symmetrical. The fixing mechanism holding portion 23A and the fixing mechanism holding portion 24A are examples of the “fixing mechanism holding portion” in the present invention.

  A holder portion 3 shown in FIG. 1 is supported by a base portion 2 and supports a circular saw blade support portion 4 so as to be tiltable and swingable with respect to the base portion 2. The holder portion 3 includes a base portion 31, a right arm 32, a left arm 33, a swing support pin 34, a torsion spring 35, and a tilting shaft 36. The holder part 3 is an example of the “holder part” in the present invention.

  The tilting shaft 36 extends in the front-rear direction in parallel with the mounting surfaces (the right mounting surface 21D and the left mounting surface 21E) of the base portion 2, and supports the base portion 31 so as to be tiltable with respect to the base portion 2. Yes. The tilting shaft 36 extends substantially parallel to the mounting surface of the base portion 2 while extending substantially perpendicular to the axial direction of the circular saw blade P. The tilt axis 36 is an example of the “tilt axis” in the present invention.

  The base 31 is located at the rear part of the turntable 22. More specifically, the base 31 is located on the opposite side of the side handle 22B with respect to the center of the turntable 22 in plan view in the front-rear direction. The base 31 is provided with a tilt adjustment mechanism (not shown) for fixing the tilt angle of the circular saw blade support 4 supported by the base 31 (an angle tilted with respect to the vertical direction in a front view) at a desired tilt angle. ing.

  The right arm 32 and the left arm 33 extend rearward and upward from the upper right portion and the upper left portion of the base portion 31, respectively, and are in contact with the circular saw blade support portion 4 from the left and right directions. The right arm 32 and the left arm 33 support the circular saw blade support portion 4 via a swing support pin 34. The base 31, the right arm 32, and the left arm 33 are integrally formed, and the circular saw blade support 4 can be tilted with respect to the base 2 by tilting the base 31 with respect to the base 2. The center of tilting of the circular saw blade support 4 is a tilting axis C that passes through the tilting shaft 36 and extends in the front-rear direction.

  The swing support pins 34 shown by dotted lines in FIG. 1 extend in the left-right direction, and are inserted through through holes formed in the right arm 32, the left arm 33, and the circular saw blade support portion 4, respectively. . Thereby, the circular saw blade support portion 4 is supported by the holder portion 3 so as to be swingable with respect to the base portion 2. The center of oscillation of the circular saw blade support 4 is an oscillation axis B that passes through the center of the oscillation support pin 34 and extends in the left-right direction.

  The torsion spring 35 urges the circular saw blade support 4 in the counterclockwise direction when viewed from the right side. Thereby, the circular saw blade support part 4 is comprised so that it may be located in the highest position in the state in which the external force is not applied.

  The circular saw blade support portion 4 includes an arm portion 41 and a cutting portion 42. The circular saw blade support portion 4 is an example of the “cutting blade support portion” in the present invention.

  The arm portion 41 is supported by the holder portion 3 so as to be swingable and tiltable. The arm portion 41 extends forward and upward in a state where the circular saw blade support portion 4 is located at the highest position. As the arm portion 41 swings about the swing axis B, the entire circular saw blade support 4 swings about the swing axis B. Further, the arm portion 41 tilts about the tilt axis C, so that the entire circular saw blade support portion 4 tilts about the tilt axis C. In the present embodiment, as shown in FIG. 4, the circular saw blade P is approximately 45 degrees from the direction perpendicular to the mounting surface of the base portion 2 (hereinafter referred to as the maximum tilt angle). The circular saw blade support portion 4 can be tilted until it is in an inclined state (hereinafter referred to as a second posture). FIG. 4 is a front view showing the appearance of the tabletop circular saw 1, and shows the case where the tabletop circular saw 1 is in the second posture. The maximum tilt angle is an example of the “predetermined angle” in the present invention.

  The cutting part 42 is provided at the end opposite to the end supported by the swing support pin 34 of the arm part 41, and includes a motor housing part 42A, a saw cover 42B, and a protective cover 42C. Yes.

  The motor housing portion 42A extends in the left-right direction, houses the motor 5 therein, and has an output shaft (not shown). A motor 5 indicated by a dotted line in FIG. 1 is an AC commutator motor and has a rotating shaft 5A extending in the left-right direction. An output shaft (not shown) protrudes rightward from the motor housing portion 42A and is connected to the rotating shaft 5A via a gear group (not shown). The circular saw blade P is a saw blade having a substantially circular shape in side view for cutting a material to be cut, and is rotatably supported on the output shaft. The rotation center of the circular saw blade P is the rotation axis A shown in FIG. 1, and the rotation axis A extends in the left-right direction through the center of the output shaft. That is, the circular saw blade P can rotate around its own rotation axis A upon receiving the rotational force of the motor 5. The motor 5 is an example of the “drive source” in the present invention. The circular saw blade P is an example of the “cutting blade” in the present invention.

  The saw cover 42B is a member that covers the upper portion of the circular saw blade P supported by an output shaft (not shown) of the motor housing portion 42A, and is connected to the right portion of the motor housing portion 42A. The protective cover 42C covers the lower portion of the circular saw blade P when the circular saw blade support portion 4 is located at the highest position, but a link mechanism provided between the holder portion 3 and the protective cover 42C. 42D is rotated counterclockwise in the right side view in conjunction with the swinging of the circular saw blade support portion 4 from the highest position, and the lower portion of the circular saw blade P is exposed.

  The handle portion 6 is connected to the rear portion of the motor housing portion 42A of the circular saw blade support portion 4, and extends from the rear portion of the motor housing portion 42A to the front upper side. The handle portion 6 has a trigger switch 61 and a handle 62. The handle 62 is a portion that is gripped when the operator tilts or swings the circular saw blade support 4 and has a substantially cylindrical shape. The trigger switch 61 is a manually operable switch that controls the start and stop of the motor 5, and is provided on the left portion of the handle 62.

  As shown in FIG. 5, the fixing mechanism 7 is configured to be detachable from the fixing mechanism holding portion 23 </ b> A of the right fence portion 23 or the fixing mechanism holding portion 24 </ b> A of the left fence portion 24. It can be pressed and fixed. The fixing mechanism 7 includes a first shaft 71, a second shaft 72, a pressing portion 73, a connecting portion 74, a connecting member 75, and a screw 76. FIG. 5 is a perspective view showing an appearance of the fixing mechanism 7 of the tabletop circular saw 1. The following description is based on the state where the fixing mechanism 7 is attached to the fixing mechanism holding portion 23A. The fixing mechanism 7 is an example of the “fixing mechanism” in the present invention.

  As shown in FIGS. 1 and 5, the first shaft 71 has a substantially cylindrical shape extending in the vertical direction. The diameter of the first shaft 71 is configured to be slightly smaller than the diameter of the through hole 23 a of the fixing mechanism holding part 23 </ b> A of the right fence part 23. That is, the first shaft 71 can be inserted into the through hole 23a of the base portion 23B of the fixing mechanism holding portion 23A, and the first shaft 71 is in a state where the first shaft 71 is inserted into the through hole 23a. 71 is held by the fixing mechanism holding portion 23A so as to be rotatable about an axis D extending through the center in a plan view and extending in the vertical direction. The first shaft 71 is an example of the “first portion” in the present invention. The vertical direction is an example of the “first direction” in the present invention. The axis D is an example of the “axis extending through the first portion in the first direction” in the present invention.

  As shown in FIG. 5, one end portion of the connecting portion 74 is connected to the upper end portion of the first shaft 71, and substantially extends from the upper end portion of the first shaft 71 in the radial direction of the first shaft 71. It has a cylindrical shape. The radial direction of the first shaft 71 coincides with the surface direction of the mounting surface of the base portion 2. The diameter of the connecting portion 74 is configured to be substantially the same as the diameter of the first shaft 71. The connecting portion 74 can rotate around the axis D integrally with the first shaft 71. The connecting portion 74 is an example of the “first arm” in the present invention. The radial direction of the first shaft 71 is an example of the “second direction” in the present invention.

  The second shaft 72 has a substantially cylindrical shape extending in the vertical direction, and a lower end portion of the second shaft 72 is connected to the other end portion of the connecting portion 74. That is, the second shaft 72 is connected to the first shaft 71 by connecting one end and the other end of the connecting portion 74 to the upper end of the first shaft 71 and the lower end of the second shaft, respectively. Is supported through. The upper end portion of the second shaft is located above the upper end portion of the first shaft 71. The diameter of the second shaft 72 is substantially the same as the diameters of the first shaft 71 and the connecting portion 74. In the present embodiment, the first shaft 71, the second shaft 72, and the connecting portion 74 are integrally formed. The second shaft 72 is an example of the “second portion” in the present invention.

  Further, the first shaft 71, the second shaft 72, and the connecting portion 74 can be rotated around the axis D as a unit. The height of the first shaft 71 is such that when the first shaft 71, the second shaft 72, and the connecting portion 74 rotate about the axis D, the connecting portion 74 and the fence 23H do not interfere with each other. 23 is configured to be higher than the height of the surface 23I.

  The connecting member 75 has a substantially oval shape in plan view extending in the radial direction of the second shaft 72. The connecting member 75 has a connecting hole 75a formed at one end in the long axis direction and a female screw hole 75b formed at the other end. The connecting member 75 has a fixing portion 75A. The connecting member 75 is an example of the “second arm” in the present invention. The radial direction of the second shaft 72 is an example of the “second direction” in the present invention.

  The connection hole 75 a passes through the connection member 75 in the vertical direction, and its diameter is configured to be slightly larger than the diameter of the second shaft 72. In other words, the second shaft 72 can be inserted into the connection hole 75a, and the connection member 75 moves in a vertical direction relative to the second shaft 72 in a state where the second shaft 72 is inserted into the connection hole 75a. Is possible. Further, the connecting member 75 is rotatable about an axis E that extends in the first direction through the center of the second shaft 72 in plan view. The female screw hole 75b extends in the vertical direction and penetrates the connecting member 75 in the vertical direction. ing. The axis E is an example of “an axis extending in the first direction and extending in the first direction through the second portion” in the present invention.

  The fixing portion 75 </ b> A is configured to fix the connecting member 75 to the second shaft 72. The fixed portion 75 </ b> A has a substantially cylindrical shape extending from one end portion of the connecting member 75 in a direction opposite to the direction from one end portion of the connecting member 75 to the other end portion. The fixing portion 75 </ b> A is formed with a screw hole (not shown) that extends in a direction opposite to the direction from the one end portion of the connecting member 75 to the other end portion and can be screwed with the screw 76. A screw hole (not shown) of the fixing portion 75A communicates with the connection hole 75a. When the connecting member 75 is fixed to the second shaft 72 by the fixing portion 75A, the connecting member 75 is integrated with the first shaft 71, the connecting portion 74, and the second shaft 72 around the axis D. It can be rotated.

  The pressing portion 73 is configured to be able to press the material to be cut against the mounting surface of the base portion 2. The pressing part 73 has a pressing shaft 73A, a knob 73B, and a pressing tool 73C. The pressing portion 73 is an example of the “pressing portion” in the present invention.

  The pressing shaft 73A has a cylindrical shape extending in the vertical direction. A male screw portion that is screwed into the female screw hole 75b of the connecting member 75 is formed on the entire peripheral surface of the pressing shaft 73A. The pressing portion 73 is configured to be rotatable about an axis F extending in the first direction through the center of the pressing shaft 73A in a plan view in a screwed state. Since the pressing shaft 73 </ b> A is screwed into the female screw hole 75 b of the connecting member 75, when the connecting member 75 is rotated around the shaft center E, the pressing portion 73 has the shaft center E integrally with the connecting member 75. Rotate around the center. Further, in a state where the connecting member 75 is fixed to the second shaft 72, the pressing portion 73 rotates the second shaft 72 around the axis D so that the axis D is moved via the connecting member 75. Rotate to the center.

  The pressing tool 73C is a member that comes into contact with the upper surface of the material to be cut when the material to be cut is pressed against the mounting surface of the base portion 2, and has a substantially circular shape in plan view. The pressing tool 73C is provided at the lower end of the pressing shaft 73A.

  The knob 73B is a portion that is operated by an operator, and has a substantially cylindrical shape extending in the vertical direction. The knob 73B is fixed to the upper end portion of the pressing shaft 73A, and is rotatable about the axis F together with the pressing shaft 73A. In the present embodiment, when the operator rotates the knob 73B clockwise in a plan view, the pressing portion 73 moves downward relative to the connecting member 75 and rotates the knob 73B counterclockwise. When it is made to move, the pressing portion 73 integrally moves relative to the connecting member 75 upward. The diameters of the knob 73B and the pressing tool 73C are configured to be larger than the diameter of the female screw hole 75b of the connecting member 75. That is, when the pressing portion 73 moves relatively downward with respect to the connecting member 75, the lower surface of the knob 73 </ b> B and the upper surface of the connecting member 75 come into contact with each other so that the further pressing portion 73 moves downward with respect to the connecting member 75. When the pressing portion 73 moves relative to the connecting member 75 in the upward direction, the upper surface of the pressing tool 73C and the lower surface of the connecting member 75 are brought into contact with each other, so The upward relative movement with respect to the connecting member 75 is restricted.

  Here, the distance between each member of the fixing mechanism 7 will be described with reference to FIG.

  As shown in FIG. 5, the height of the first shaft 71, that is, the distance from the lower end to the upper end of the first shaft 71 is a distance H11. The distance H11 is a distance at which the first shaft 71 and the circular saw blade support 4 do not interfere even when the circular saw blade support 4 is tilted to the maximum tilt angle. The distance from the lower end of the first shaft 71 to the upper end of the second shaft 72 is a distance H1. The distance H1 is a distance for adjusting the position of the pressing portion 73 in the vertical direction.

  The distance from the axis D to the axis E is a distance R11. The distance R11 retracts the second shaft 72 from the movement locus when the circular saw blade support 4 is tilted from the first posture (tilt angle 0 degree) to the second posture (tilt angle 45 degrees, maximum tilt angle). It is set to a sufficient distance. The distance R11 may be a distance that allows the second shaft 72 to be retracted from the movement trajectory, and may be configured to be shorter than the present embodiment. The radius of the pressing tool 73C is a radius R12. A distance R13 indicates a distance from the axis D to the axis F. The distance R13 is variable because the connecting member 75 is configured to be rotatable about the axis E. A distance R1 indicates a distance obtained by adding a radius R12 to the distance R13. Since the distance R13 is variable, the distance R1 is also variable.

  Next, the pressable range of the fixing mechanism 7 will be described with reference to FIG. Here, a movable range of the bottom surface of the pressing tool 73 </ b> C of the pressing portion 73 in plan view is defined as a pressable range of the fixing mechanism 7.

  As shown in FIG. 3, when the connecting member 75 rotates around the second shaft 72 (axis E), the distance R <b> 1 (R <b> 13) is reduced and pressed at a position close to the first shaft 71. Is possible. In the present embodiment, the material to be cut can be pressed in a state where the outer edge of the pressing tool 73C is in contact with the pressing surface 23I of the fence 23H. When the distance R1 is maximum, the first shaft 71 is located on the opposite side of the pressing portion 73 with respect to the second shaft 72 in the radial direction of the first shaft 71, and the first shaft 71 and the second shaft 72 are seen in plan view. And when the pressing portions 73 are aligned. Further, the pressing portion 73 is rotatable around the axis D. In the present embodiment, the radius drawn by the outer edge of the pressing tool 73C in plan view when the entire fixing mechanism 7 is rotated around the axis D with the distance R1 being maximized is a circle having the distance R1. The entire inside is a pressable range.

  From here, the cutting operation using the tabletop circular saw 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 4. The fixing work performed before the cutting work will be described later.

  When an operator performs a cutting operation, the handle 62 is gripped in a state where a material to be cut is placed on the placement surface (the right placement surface 21D, the left placement surface 21E, and the upper surface 22A of the turntable 22) of the base portion 2. The motor 5 is driven by performing a starting operation (pulling operation) on the trigger switch 61 with the finger of the hand holding the handle 62. When the motor 5 starts driving, the rotating shaft 5A of the motor 5 rotates, and an output shaft (not shown) of the motor housing portion 42A starts rotating via a gear group (not shown). As the output shaft rotates, the circular saw blade P supported by the output shaft rotates.

  In this state, when the material to be cut is cut at a cutting angle perpendicular to the mounting surface, the handle 62 is held in the state where the trigger switch 61 is pushed in with the finger and the urging force of the torsion spring 35 and the material to be cut are cut. The circular saw blade support 4 is swung down against the load accompanying the cutting of the material. As a result, the workpiece to be cut placed on the base portion 2 is cut by the rotating circular saw blade P at a cutting angle perpendicular to the placement surface.

  On the other hand, as shown in FIG. 4, when the workpiece is cut at a cutting angle that is not perpendicular to the mounting surface of the base portion 2, the operator uses a tilt adjustment mechanism (not shown). By operating, the fixing of the holder part 3 to the base part 2 is released. In this state, the operator moves the grip handle 62 (handle portion 6) to the right. As the handle portion 6 moves to the right, the holder portion 3 and the circular saw blade support portion 4 tilt about the tilt axis C. In this state, the operator fixes the holder portion 3 to the base portion 2 at a desired tilt angle using a tilt adjustment mechanism (not shown), and swings 4 to perform the cutting operation.

  Next, with reference to FIG. 3 to FIG. 7, a description will be given of a fixing operation of the wood W that is an example of a material to be cut when the fixing mechanism 7 is used (the fixing mechanism 7 is attached to the tabletop circular saw 1). In the following, the description will be made in comparison with the case where the fixing mechanism 700 in the conventional tabletop circular saw is used in the cutting operation as necessary.

  As shown in FIG. 3, the worker first attaches the fixing mechanism 7 to the fixing mechanism holding portion 23 </ b> A of the right fence portion 23. Specifically, the lower portion of the first shaft 71 of the fixing mechanism 7 is inserted through the through hole 23a of the base portion 23B of the fixing mechanism holding portion 23A. In this state, the lower end surface of the first shaft 71 is in contact with the upper surface of the right leg portion 21B, and the position of the upper end of the first shaft 71 in the vertical direction is determined. The worker rotates the first shaft 71 (the first shaft 71, the second shaft 72, and the connecting portion 74) about the axis D according to the position of the wood W on the mounting surface of the base portion 2. .

  Next, the operator adjusts the relative position of the pressing portion 73 with respect to the first shaft 71 in plan view. Specifically, the relative position of the pressing portion 73 relative to the first shaft 71 and the second shaft 72 is adjusted by adjusting the relative position of the connecting member 75 relative to the second shaft 72 in the vertical direction according to the height of the wood W. adjust. Further, the position of the pressing portion 73 in the direction parallel to the mounting surface is adjusted by rotating the connecting member 75 about the axis E according to the position of the base portion 2 of the wood W on the mounting surface. .

  When the position is determined, the operator screws the screw 23J from the rear into a screw hole (not shown) of the first shaft fixing portion 23D of the right fence portion 23. The front end surface of the screw 23J and the outer peripheral surface of the first shaft 71 are in contact with each other, and the screw 23J is further screwed in so as to define the through hole 23a between the front end surface of the screw 23J and the outer peripheral surface of the first shaft 71. When the surface pressure between the inner peripheral surface and the outer peripheral surface of the first shaft 71 increases, the first shaft 71 is fixed (held) to the fixing mechanism holding portion 23A.

  Further, with the second shaft 72 inserted through the connection hole 75a of the connection member 75, the screw 76 is screwed into a screw hole (not shown) of the fixing portion 75A. The front surface of the screw 76 and the outer periphery of the second shaft 72 are in contact with each other, and the screw 76 is further screwed in, so that the connection between the tip surface of the screw and the outer periphery of the second shaft 72 and the outer periphery of the connection hole 75a and the second shaft 72. The connecting member 75 is fixed to the second shaft 72 by increasing the surface pressure therebetween. Thereby, the relative position with respect to the 1st shaft 71 of the press part 73 in planar view is determined.

  As shown in FIG. 6, the worker rotates the knob 73 </ b> B of the pressing portion 73 in the clockwise direction with the wood W being in contact with the pressing surface of the right fence portion 23. By rotating the knob 73B in the clockwise direction, the pressing portion 73 moves downward, and the lower surface of the pressing tool 73C and the upper surface of the wood W come into contact with each other. In this state, by further rotating the knob 73B in the clockwise direction, the surface pressure between the lower surface of the pressing tool 73C and the upper surface of the wood W and between the lower surface of the wood W and the placement surface increases, and the wood W is fixed on the mounting surface. FIG. 6 is a right side view showing the appearance of the tabletop circular saw 1 and shows a state in which a wood W, which is an example of a material to be cut, is fixed on the mounting surface of the base portion 2 by the fixing mechanism 7. .

  Here, the structure of the fixing mechanism 700 in the conventional tabletop circular saw will be briefly described with reference to FIG.

  As illustrated in FIG. 14, the fixing mechanism 700 includes a shaft 701, a connecting member 702, a pressing portion 703, and a screw 704. FIG. 14 is a perspective view showing an appearance of a fixing mechanism 700 in a conventional tabletop circular saw. The following description is based on the state where the fixing mechanism 700 is attached to the fixing mechanism holding portion 23A.

  The shaft 701 has a substantially cylindrical shape extending in the first direction. The diameter of the shaft 701 is slightly smaller than the diameter of the through hole 23 a of the fixing mechanism holding portion 23 </ b> A of the right fence portion 23. That is, the shaft 701 can be inserted into the fixing mechanism holding portion 23A, and the fixing mechanism 700 extends in the first direction through the center in a plan view of the shaft in a state where the shaft 701 is inserted through the fixing mechanism holding portion 23A. It is held by the fixing mechanism holding part 23A so as to be rotatable about the axis X.

The connecting member 702 extends in the second direction and has a substantially oval shape in plan view. The connecting member 702 has a connecting hole 702a at one end in the long axis direction and a connecting hole 702b at the other end. The connecting member 702 has a fixing portion 702A. A shaft 701 is inserted into the connection hole 702a, and a pressing shaft 703A is inserted into the connection hole 702b by screwing.

  The pressing part 703 has a pressing shaft 703A extending in the vertical direction and a pressing tool 703B capable of pressing the material to be cut. The pressing portion 703 can rotate around the axis X integrally with the connecting member 702. Further, the pressing portion 703 is rotatable around an axis Y that extends in the vertical direction through the pressing shaft 703A. The pressing portion 703 is rotatable about an axis Y that extends in the first direction through the center of the pressing shaft 703A in plan view.

  As shown in FIG. 14, the height of the shaft 701, that is, the distance from the lower end to the upper end of the first shaft 71 is a distance H0. The distance from the axis X to the axis Y is a distance R03. The radius of the pressing tool 73C is a radius R02. The radius R02 is configured substantially the same as the radius R12 of the fixing mechanism 7. The distance obtained by adding the radius R02 to the distance R03 is the distance R0. The distance R0 is configured to be smaller than the distance R1. A distance obtained by subtracting the radius R02 from the distance R03 is R01.

  Here, the shaft 701 of the fixing mechanism 700 needs to have a certain height (distance H0) in order to be able to adjust the position of pressing the workpiece in the vertical direction according to the height (thickness) of the workpiece. It is.

  However, when the fixing mechanism 700 is attached to the base portion 2, the upper portion of the shaft 701 of the fixing mechanism 700 is positioned on the tilting locus of the circular saw blade support portion 4. That is, when the work piece is fixed to the base portion 2 using the fixing mechanism 700 and the circular saw blade support portion 4 is tilted to perform work (tilt cutting), the shaft 701 and the round shape of the fixing mechanism 700 are rounded. The saw blade support portion 4 interferes with the circular saw blade support portion 4 even though the circular saw blade support portion 4 is not tilted to the maximum tilt angle, and the circular saw blade support portion 4 can be operated in a state where it is tilted further. It was not possible (the work could not be performed at the maximum tilt angle), and workability was reduced.

  On the other hand, as shown in FIG. 5, the height of the first shaft 71 of the fixing mechanism 7 according to the present embodiment is H11 which is lower than H0. For this reason, the first shaft 71 does not interfere with the circular saw blade support 4 tilted to the maximum tilt angle. Further, in order to adjust the position of pressing the workpiece in the vertical direction according to the height of the workpiece, the total height of the first shaft 71 and the second shaft 72 is configured to be substantially the same as H0. However, the second shaft 72 can rotate about the axis D, and can move to the right in the left-right direction from the position where the fixing mechanism holding portion 23A is located. That is, in the fixing mechanism 7 of the present invention, the second shaft 72 can move rightward to a position where it does not interfere with the circular saw blade support 4 tilted to the maximum tilt angle. In other words, the second shaft 72 can move relative to the first shaft 71 in the front-rear and left-right directions, and can be retracted to a position where it does not interfere with the circular saw blade support 4. Accordingly, even when the circular saw blade support portion 4 is tilted, the fixing mechanism 7 and the protective cover 42C (the circular saw blade support portion 4) are separated from each other, and the fixing mechanism 7 and the protective cover 42C (the circular saw blade support portion are supported). The circular saw blade support portion 4 can be tilted to the maximum tilt angle without interference (contact) with the portion 4), and workability can be prevented from being lowered.

  Further, as shown in FIG. 7, in the conventional fixing mechanism 700, only the movement locus of the pressing tool 703B in a plan view when the entire fixing mechanism 700 is rotated about the axis X can be pressed. It becomes a range. Therefore, it is not possible to press the range in which the radius drawn by the outer edge of the pressing tool 703B is surrounded by the circle having the distance R01.

  On the other hand, according to the fixing mechanism 7 according to the present embodiment, the distance R1 can be shortened by rotating the connecting member 75 about the axis E, and the material to be cut at a position close to the first shaft 71. Can be pressed.

  Further, according to the fixing mechanism 7 according to the present embodiment, as shown by hatching in the drawing, the distance R1 of the fixing mechanism 7 is configured to be larger than R0 of the fixing mechanism 700 (can be pressed). Therefore, when compared with the fixing mechanism 700, the workpiece can be fixed in a wider range of the mounting surface. Therefore, since it becomes possible to fix a to-be-cut material in the position near a cutting location conventionally, the stable cutting operation | work is attained.

  As described above, the tabletop circular saw 1 according to the first embodiment of the present invention accommodates the motor 5, the base portion 2 having the placement surface on which the material to be cut can be placed, and the motor 5. 5 is a circular saw blade support portion 4 that can be attached to and detached from a circular saw blade P that can rotate about its own rotational axis A by receiving the rotational force of 5, and a circular saw blade support portion 4 that is supported by the base portion 2. A holder portion 3 that supports the workpiece to be tilted up to a maximum tilt angle, and a fixing mechanism 7 that can fix the material to be cut, The base portion 2 is provided with a fixing mechanism holding portion 23A that holds the fixing mechanism 7. The fixing mechanism 7 includes a first shaft 71 that is held by the fixing mechanism holding portion 23A, and a first shaft 71. A second shaft 72 supported so as to be movable relative to the second shaft 72; The first shaft 71 and the circular saw blade support portion 4 are separated from each other when the circular saw blade support portion 4 is tilted to the maximum tilt angle. doing. That is, the relative position of the second shaft 72 with respect to the first shaft 71 in the second direction can be changed by rotating the first shaft 71 about the axis D on the fixing mechanism holding portion 23A. Thereby, even when the circular saw blade support portion 4 is tilted to the maximum tilt angle, the fixing mechanism 7 and the circular saw blade support portion 4 do not interfere with each other, and it is possible to prevent a decrease in workability. Become.

  The first shaft 71 extends in the vertical direction and is configured to be rotatable about the axis D. The first shaft 71 and the second shaft 72 are connected by a connecting portion 74 that extends in the radial direction of the first shaft 71. Since the second shaft 72 is configured to be movable by rotating the first shaft 71 about the axis D, the first shaft 71 rotates in the second direction as the first shaft 71 rotates. Since the second shaft located at a position different from the first shaft 71 is configured to be movable, the workpiece can be fixed over a wide range of the mounting surface of the base portion 2.

  The second shaft 72 extends in the vertical direction and is configured to be rotatable about the axis E. The second shaft 72 and the pressing portion 73 are connected by a connecting member 75 that extends in the radial direction of the first shaft 71. Since the pressing portion 73 can be moved by rotating the second shaft 72 about the axis E, the second shaft 72 is rotated in the second direction as the second shaft 72 rotates. Since the pressing portion 73 located at a position different from 72 is configured to be movable, the material to be cut can be fixed over a wide range of the mounting surface of the base portion 2.

  Further, since the first shaft 71 is detachably held by the fixing mechanism holding portion 23A, it can be removed and carried as a single unit as necessary, and can be carried by the fixing mechanism holding portion 24A as much as possible. By attaching it, the range of work can be expanded.

  Next, a tabletop circular saw 101 which is an example of a tabletop cutting machine according to a second embodiment of the present invention will be described with reference to FIGS. The same components as those of the tabletop circular saw 1 are denoted by the same reference numerals, the description thereof is omitted, and different components will be mainly described. FIG. 8 is a perspective view showing an external appearance of the fixing mechanism 17 of the tabletop circular saw 101. FIG. 9 is a perspective view showing the appearance of the fixing mechanism 17 of the tabletop circular saw 101. The state in which the second shaft 172 has moved relative to the first arm 174 in the vertical direction from the state shown in FIG. Show.

  As shown in FIGS. 8 and 9, the tabletop circular saw 101 has a fixing mechanism 17 instead of the fixing mechanism 7, and is otherwise the same as the tabletop circular saw 1. The fixing mechanism 17 has a first shaft 171, a second shaft 172, a pressing portion 73, a first arm 174, a second arm 175, and a second shaft fixing portion 176 having a screw 176A. . The following description is based on the state where the fixing mechanism 17 is attached to the fixing mechanism holding portion 23A. The fixing mechanism 17 is an example of the “fixing mechanism” in the present invention.

  The first shaft 171 has a substantially cylindrical shape extending in the first direction. The diameter of the first shaft 171 is configured to be slightly smaller than the diameter of the through hole 23 a of the fixing mechanism holding portion 23 </ b> A of the right fence portion 23. That is, the first shaft 171 can be inserted into the through hole 23a of the base portion 23B of the fixing mechanism holding portion 23A, and the first shaft 171 has the axis G in a state where the first shaft 171 is inserted into the through hole 23a. Is held by the fixing mechanism holding portion 23A so as to be rotatable around the center. The first shaft 171 is an example of the “first portion” in the present invention. The axis G is an example of the “axis extending in the first direction and extending in the first direction through the first portion” in the present invention.

  One end of the first arm 174 is connected to the upper end of the first shaft 171, and has a substantially cylindrical shape extending from the upper end of the first shaft 171 in the radial direction of the first shaft 171. The diameter of the first arm 174 is substantially the same as the diameter of the first shaft 171. A connecting hole 174 a extending in the vertical direction is formed at the other end of the first arm 174. The first arm 174 has a second shaft fixing portion (not shown). In the second embodiment, the first shaft 171 and the first arm 174 are integrally formed. The first arm 174 is an example of the “first arm” in the present invention.

  The first shaft 171 and the first arm 174 can integrally rotate about the axis G. The height of the first shaft 171 is higher than the height of the fence 23H so that the first arm 174 and the fence 23H do not interfere with each other when the first shaft 171 and the first arm 174 rotate around the axis G. It is configured.

  The second shaft 172 has a substantially cylindrical shape extending in the vertical direction. The diameter of the second shaft 172 is configured to be slightly smaller than the diameter of the connection hole 174 a of the first arm 174. The second shaft 172 is configured to be movable relative to the first arm 174 in the vertical direction while being inserted through the connection hole 174a, and is configured to be fixed in the vertical direction by the second shaft fixing portion 176. ing. In other words, the second shaft can move in a direction perpendicular to the mounting surface of the base portion 2. The second shaft 172 is rotatable about an axis H that extends in the vertical direction through the center of the second shaft 172 in plan view. Further, the second shaft 172 is rotatable about the axis G as the first shaft 171 and the first arm 174 are rotated about the axis G. The second shaft 172 is an example of the “second portion” in the present invention. The axis H is an example of the “axis extending through the second portion in the first direction” in the present invention.

  One end of the second arm 175 is connected to the upper end of the second shaft 172, and has a substantially cylindrical shape extending from the upper end of the second shaft 172 in the radial direction of the second shaft 172. The diameter of the second arm 175 is substantially the same as the diameter of the second shaft 172. A female screw hole 175 a is formed at the other end of the second arm 175. In the second embodiment, the second shaft 172 and the second arm 175 are integrally formed. The second arm 175 is integrated with the first shaft 171, the second shaft 172, and the first arm 174 as the first shaft 171, the second shaft 172, and the first arm 174 rotate about the axis G. It is possible to rotate around the axis G. The second arm 175 is an example of the “second arm” in the present invention.

  The pressing portion 73 has a pressing shaft 73 </ b> A screwed into the female screw hole 175 a of the second arm 175, and can rotate about the axis H integrally with the second arm 175. Further, since the second shaft 172 is inserted into the connection hole 174a of the first arm 174, the pressing portion 73 moves the second arm 175 with the rotation of the second shaft 172 about the axis G. It is possible to rotate around the axis G. Further, the pressing portion 73 is rotatable about an axis I extending in the vertical direction through the center of the pressing shaft 73A in a plan view in a screwed state.

  Here, the distance between the members of the fixing mechanism 17 will be described with reference to FIG.

  As shown in FIG. 8, the height of the first shaft 171, that is, the distance from the lower end to the upper end of the first shaft 171 is a distance H 21. The distance H21 is a distance at which the first shaft 171 and the circular saw blade support 4 do not interfere even when the circular saw blade support 4 is tilted to the maximum tilt angle. The distance H2 indicates the distance from the lower end of the first shaft 171 to the upper end of the second shaft 172. As shown in FIGS. 8 and 9, the distance H <b> 2 is variable because the second shaft 172 can move relative to the first shaft 171 in the vertical direction.

  The distance from the axis G to the axis H is a distance R21. The distance R21 retracts the second shaft 172 from the movement locus when the circular saw blade support 4 is tilted from the first posture (tilt angle 0 degree) to the second posture (tilt angle 45 degrees, maximum tilt angle). It is set to a sufficient distance. The distance R21 may be any distance that allows the second shaft 172 to be retracted from the movement trajectory, and may be configured shorter than the present embodiment. The radius of the pressing tool 73C is a radius R12. A distance R22 indicates a distance from the axis G to the axis I. The distance R22 is variable because the second arm 175 is configured to be rotatable about the axis H. The distance R2 indicates a distance obtained by adding the radius R12 of the pressing tool 73C of the pressing portion 73 to the distance R22. The distance R2 is variable because the distance R22 is variable.

  Next, the pressable range of the fixing mechanism 17 will be described with reference to FIG.

  As shown in FIG. 8, when the first arm 174 rotates about the axis H, the distance R <b> 2 becomes small and can be pressed at a position close to the first shaft 171. The distance R2 is such that the second shaft 172 is positioned on the opposite side of the first shaft 171 in the radial direction of the first shaft 171, and the first shaft 171, the second shaft 172, and the pressing portion 73 are aligned in a plan view. Minimum when lined up. The distance R2 is such that the second shaft 172 is located on the same side as the pressing portion 73 with respect to the first shaft 171 in the radial direction of the first shaft 171, and the first shaft 171, the second shaft 172, and the pressing portion 73 are in plan view. Maximum when aligned. Further, the pressing portion 73 is rotatable about the axis G. In the present embodiment, the radius drawn by the outer edge of the pressing tool 73C in plan view when the entire fixing mechanism 17 is rotated about the axis G with the distance R2 being maximized is a circle having the distance R2. The entire inside is a pressable range.

  Next, with reference to FIG. 8 and FIG. 9, a description will be given of an operation of fixing the material to be cut to the mounting surface of the base portion 2 using the fixing mechanism 17. Note that the cutting operation using the tabletop circular saw 101 is the same as that of the tabletop circular saw 1, and the description thereof is omitted.

  First, the operator rotates the first shaft 171 about the axis G in accordance with the position of the workpiece to be cut on the mounting surface of the base portion 2. At this time, the second shaft 172 can move to the right from the position where the fixing mechanism holding portion 23A is located. Accordingly, even when the circular saw blade support portion 4 is tilted, the fixing mechanism 17 and the protective cover 42C (circular saw blade support portion 4) are separated from each other, and the fixing mechanism 17 and the protective cover 42C (circular saw blade support portion) are separated. The circular saw blade support portion 4 can be tilted to the maximum tilt angle without interference (contact) with the portion 4), and workability can be prevented from being lowered.

  Next, the operator adjusts the relative position of the pressing portion 73 with respect to the first shaft 71 and the second shaft 72 in plan view. Specifically, by adjusting the relative position of the second shaft 172 with respect to the first arm 174 in the vertical direction according to the height of the material to be cut, the first shaft 171 and the first shaft 171 of the pressing portion 73 are adjusted. The relative position with respect to the two shafts 172 is adjusted. At this time, as shown in FIG. 9, the distance H <b> 2 is made smaller than the state shown in FIG. 8 because the second shaft 172 can move downward relative to the first shaft 171. It is possible. Thus, even when the second shaft 172 is not moved to the right from the position where the fixing mechanism holding portion 23A is located, the circular saw blade support portion 4 can be tilted to the maximum tilt angle.

  Further, according to the fixing mechanism 17 according to the second embodiment, the distance R2 can be shortened by rotating the second arm 175 about the axis H, and therefore the position close to the first shaft 171. Can be pressed. That is, the inside of the circle drawn by the outer edge of the pressing tool 73C located at the distance R01 in plan view is also a pressable range.

  Furthermore, according to the desktop circular saw 101 according to the second embodiment, the distance R2 of the fixing mechanism 17 is configured to be larger than the R0 of the fixing mechanism 700 (the pressing range is wide). When compared with the above, it becomes possible to fix the material to be cut in a wider range of the mounting surface.

  As described above, the tabletop circular saw 101 according to the second embodiment has the same effects as the tabletop circular saw 1 according to the first embodiment.

  Further, the second shaft 172 is configured to be movable in the vertical direction, and the pressing portion 73 is configured to be movable in the vertical direction by moving the second shaft 172 in the vertical direction. It is possible to fix different workpieces to the base portion 2 and even if the second shaft 172 is a table-shaped circular saw having a configuration in which the circular saw blade support portion 4 moves relatively large in the vertical direction by tilting, The circular saw blade support part 4 can be suitably suppressed by moving in the vertical direction. As described above, in the second embodiment, the relative position in the first direction with respect to the first shaft is changed by moving the second shaft 172 in the vertical direction (first direction) with respect to the first shaft 171. It is possible to suppress the interference of the fixing mechanism 17 with the circular saw blade support 4.

  Next, a tabletop circular saw 201, which is an example of a tabletop cutting machine according to a third embodiment of the present invention, will be described with reference to FIGS. The same configurations as those of the tabletop circular saw 1 and the tabletop circular saw 101 are denoted by the same reference numerals, description thereof is omitted, and different configurations are mainly described. FIG. 10 is a perspective view showing the appearance of the fixing mechanism 27 of the tabletop circular saw 201. FIG. 11 is a perspective view showing an appearance of the fixing mechanism 27 of the tabletop circular saw 201, and shows a state in which the second shaft 272 is rotated around the axis L from the state shown in FIG.

  As shown in FIGS. 10 and 11, the tabletop circular saw 201 has a fixing mechanism 27 instead of the fixing mechanism 7, and is otherwise the same as the tabletop circular saw 1. The fixing mechanism 27 includes a first shaft 271, a second shaft 272, a pressing portion 73, a first connecting portion 274, a second connecting portion 275, and a first connecting portion fixing portion 276 having a screw 276A. doing. The following description is based on the state where the fixing mechanism 27 is attached to the fixing mechanism holding portion 23A. The fixing mechanism 27 is an example of the “fixing mechanism” in the present invention.

  The first shaft 271 has a substantially cylindrical shape extending in the vertical direction. The diameter of the first shaft 271 is configured to be slightly smaller than the diameter of the through hole 23 a of the fixing mechanism holding portion 23 </ b> A of the right fence portion 23. That is, the first shaft 271 can be inserted into the through hole 23a of the base portion 23B of the fixing mechanism holding portion 23A, and the first shaft 271 is inserted into the through hole 23a with the first shaft 271 being inserted into the through hole 23a. It is held by the fixing mechanism holding portion 23A so as to be rotatable about an axial center J extending in the vertical direction passing through the center in the plan view of H.271. A connection hole 271 a extending in the radial direction of the first shaft 271 is formed at the upper end portion of the first shaft 271. The first shaft 271 is an example of the “first portion” in the present invention. The axis G is an example of the “axis extending through the first portion in the first direction” in the present invention.

  The first connecting portion 274 has a substantially cylindrical shape extending in the radial direction of the first shaft 271. The diameter of the first connecting portion 274 is configured to be slightly smaller than the diameter of the connecting hole 271a of the first shaft 271. The first connecting portion 274 is inserted into the first shaft 271 with one end thereof being inserted into the connecting hole 271 a of the first shaft 271, and moves relative to the first shaft 271 in the radial direction of the first shaft 271. It is configured to be impossible. The first connecting portion 274 is rotatable about an axis L that passes through the center of the first connecting portion 274 and extends in the radial direction of the first shaft 271, and the first connecting portion fixing portion 276 restricts the rotation. It is configured to be possible. The first connecting portion 274 is an example of the “first arm” in the present invention.

  The first shaft 271 and the first connecting portion 274 can be integrally rotated about the axis J. The height of the first shaft 271 is determined by the first shaft 271 and the first connecting portion 274. When rotated around the axis J, the first connecting portion 274 and the fence 23H are configured to be higher than the height of the fence 23H so that they do not interfere with each other.

  In the state shown in FIG. 10, the second shaft 272 has a substantially cylindrical shape extending in the vertical direction. One end portion of the second shaft 272 is connected to the other end portion of the first coupling portion 274. The diameter of the second shaft 272 is substantially the same as the diameter of the first connecting portion 274. The second shaft 272 and the first connecting portion 274 are integrally formed, and the second shaft 272 and the first connecting portion 274 can be integrally rotated about the axis L. The second shaft 272 can rotate about the axis J integrally with the first shaft 271 and the first connecting portion 274. A connection hole 272 a extending in the radial direction of the second shaft 272 is formed at one end of the second shaft 272. The second shaft 272 is an example of the “second portion” in the present invention.

  The second connecting portion 275 has a substantially cylindrical shape extending in the radial direction of the second shaft 272. The diameter of the second connecting part 275 is configured to be slightly smaller than the connecting hole 272 a of the second shaft 272. One end of the second connecting portion 275 is inserted into the connecting hole 272a of the second shaft 272, and is configured to be relatively unmovable in the radial direction of the second shaft 272 with respect to the second shaft 272. The second connecting portion 275 is configured to be rotatable about an axis M that passes through the center of the second connecting portion 275 and extends in the radial direction of the second shaft 272. The second connecting portion 275 can rotate around the axis L integrally with the second shaft 272 and the first connecting portion 274. The second connecting portion 275 can rotate about the axis J integrally with the first shaft 271, the second shaft 272, and the first connecting portion 274. The second connecting part 275 has a female screw hole 275a. The second connecting portion 275 is an example of the “second arm” in the present invention.

  The pressing portion 73 is configured such that the pressing shaft 73 </ b> A is screwed into the female screw hole 275 a of the second connecting portion 275 and is rotatable about the axis J. Further, the pressing portion 73 is rotatable about an axis K that passes through the center of the pressing shaft 73A in a plan view and extends in the up-down direction in a screwed state.

  Here, the distance between the members of the fixing mechanism 27 and the like will be described with reference to FIG.

  As shown in FIG. 10, the height of the first shaft 271, that is, the distance from the lower end to the upper end of the first shaft 271 is a distance H <b> 31. The distance H31 is a distance at which the first shaft 271 and the circular saw blade support 4 do not interfere even when the circular saw blade support 4 is tilted to the maximum tilt angle. A distance H3 indicates a distance from the lower end of the first shaft 271 to the upper end of the second shaft 272.

  The distance from the axis J to the center line Q of the second shaft 272 is R31. The distance R31 retracts the second shaft 172 from the movement locus when the circular saw blade support 4 is tilted from the first position (tilt angle 0 degree) to the second position (tilt angle 45 degrees, maximum tilt angle). It is set to a sufficient distance. The distance R31 may be a distance that allows the second shaft 172 to be retracted from the movement trajectory, and may be configured to be shorter than the present embodiment. The radius of the pressing tool 73C is a radius R12. A distance R32 indicates the distance from the axis J to the axis K. The distance R32 is variable because the second shaft 272 is configured to be rotatable about the axis L. A distance R3 indicates a distance obtained by adding a radius R12 to the distance R32. The distance R3 is variable because the distance R32 is variable. A distance R33 indicates a distance obtained by subtracting the radius R12 from the distance R32. The distance R33 is variable because the distance R32 is variable.

  Next, the pressable range of the fixing mechanism 27 will be described with reference to FIG.

  As shown in FIG. 10, the distance R3 is such that the second shaft 272 is located on the same side as the pressing portion 73 with respect to the first shaft 271 in the radial direction of the first shaft 271, and the first shaft in the plan view. It becomes maximum when 271, the second shaft 272, and the pressing portion 73 are aligned. The distance R33 is minimum when the second shaft 272 rotates about 90 degrees around the axis L. Further, the pressing portion 73 can rotate around the axis J. That is, in the third embodiment, when the distance R3 is maximum, the radius drawn by the outer edge of the pressing tool 73C in plan view when the distance R3 is maximum is inside the circle with the distance R3 and when the distance R33 is minimum in plan view. A range in which the radius drawn by the outer edge of the pressing tool 73C is surrounded by the outside of the circle having the distance R33 is a pressable range.

  Next, with reference to FIG. 10 and FIG. 11, a description will be given of an operation of fixing the material to be cut to the mounting surface of the base portion 2 using the fixing mechanism 27. Note that the cutting work using the tabletop circular saw 201 is the same as that of the tabletop circular saw 1, and thus the description thereof is omitted.

  First, the operator rotates the first shaft 271 about the axis J according to the position of the base material 2 on the placement surface of the material to be cut. At this time, the second shaft 272 can move to the right from the position where the fixing mechanism holding portion 23A is located. Accordingly, even when the circular saw blade support 4 is tilted, the fixing mechanism 27 and the protective cover 42C (the circular saw blade support 4) are separated from each other, and the fixing mechanism 27 and the protective cover 42C (the circular saw blade support) are separated. The circular saw blade support portion 4 can be tilted to the maximum tilt angle without interference (contact) with the portion 4), and workability can be prevented from being lowered.

  Next, the operator adjusts the relative positions of the pressing portion 73 with respect to the first shaft 271 and the second shaft 272 in plan view. Specifically, the second shaft 272, the second connecting portion 275, and the pressing portion 73 are integrally rotated about the axis L. At this time, as shown in FIG. 11, the other end of the second shaft 272 moves downward. Thereby, even when the second shaft 272 is not moved to the right from the position where the fixing mechanism holding portion 23A is located, the circular saw blade support portion 4 can be tilted to the maximum tilt angle.

  Further, according to the table-shaped circular saw 201 according to the third embodiment, the distance R3 of the fixing mechanism 27 is configured to be larger than the R0 of the fixing mechanism 700 (the pressing range is wide). When compared with the above, it becomes possible to fix the material to be cut in a wider range of the mounting surface.

As described above, the tabletop circular saw 201 according to the third embodiment has the same effects as the tabletop circular saw 1 according to the first embodiment and the table circular saw 101 according to the second embodiment.

  The second shaft 272 is configured to be rotatable about an axis L that extends in the radial direction of the first shaft 271 through the first connecting portion 274, and rotates the second shaft 272 about the axis L. Thus, since the pressing portion 73 is configured to be movable in the vertical direction, it becomes possible to fix the workpieces having greatly different heights to the base portion. Furthermore, since the pressing portion 73 is configured to be movable in the front-rear and left-right directions, a material to be cut having a large area can be fixed to the base portion. Thus, in the third embodiment, the second shaft 272 can be rotated around the axis L to change the relative positions in the first direction and the second direction with respect to the first shaft 271 and fixed. Interference between the mechanism 27 and the circular saw blade support portion 4 can be suitably suppressed. In FIG. 10, a center line Q passing through the center of the second shaft 372 is shown.

  Next, a tabletop circular saw 301, which is an example of a tabletop cutting machine according to a fourth embodiment of the present invention, will be described with reference to FIGS. The same configurations as those of the tabletop circular saw 1, the tabletop circular saw 101, and the tabletop circular saw 201 are denoted by the same reference numerals, description thereof will be omitted, and different configurations will be mainly described. FIG. 12 is a perspective view showing an appearance of the fixing mechanism 37 of the tabletop circular saw 301. FIG. 13 is a perspective view showing the external appearance of the fixing mechanism 37 of the tabletop circular saw 301. From the state shown in FIG. 12, the sliding portion 374 is in the radial direction of the first shaft 371 with respect to the first shaft 371. The relative movement state is shown.

  As shown in FIGS. 12 and 13, the tabletop circular saw 301 has a fixing mechanism 37 instead of the fixing mechanism 7, and is otherwise the same as the tabletop circular saw 1. The fixing mechanism 37 includes a first shaft 371, a second shaft 372, a pressing portion 73, a sliding portion 374, a connecting portion 375, and a sliding fixing portion 376 having a screw 376A. The following description is based on the state where the fixing mechanism 37 is attached to the fixing mechanism holding portion 23A. The fixing mechanism 37 is an example of the “fixing mechanism” in the present invention.

  The first shaft 371 has a substantially cylindrical shape extending in the vertical direction. The diameter of the first shaft 371 is configured to be slightly smaller than the diameter of the through hole 23 a of the fixing mechanism holding portion 23 </ b> A of the right fence portion 23. That is, the first shaft 371 can be inserted into the through hole 23a of the base portion 23B of the fixing mechanism holding portion 23A, and can be rotated around the axis N in a state where the first shaft 371 is inserted into the through hole 23a. It is held by the fixing mechanism holding portion 23A. A connection hole 371 a is formed at the upper end of the first shaft 371. The inner peripheral surface that defines the coupling hole 371 a has a surface 371 A that is substantially parallel to the mounting surface of the base 21. The first shaft 371 is an example of the “first portion” in the present invention.

  The sliding portion 374 has a substantially cylindrical shape extending in the radial direction of the first shaft 371. The sliding portion 374 has a sliding surface 374A that is substantially parallel to the mounting surface of the base portion 2, a first restricting portion 374B, and a second restricting portion 374C.

  The sliding portion 374 is inserted such that the sliding surface 374A faces the surface 371A of the first shaft 371 in the vertical direction. The sliding portion 374 is configured to be movable relative to the first shaft 371 in the radial direction of the first shaft. The first restricting portion 374 </ b> B is provided at one end portion of the sliding portion 374 and restricts movement of the one end portion of the sliding portion 374 in a direction approaching the first shaft 371 in the radial direction of the first shaft 371. The second restricting portion 374C is provided at the other end portion of the sliding portion 374, and restricts movement of the other end portion of the sliding portion 374 in a direction approaching the first shaft 371 in the radial direction of the first shaft 371. .

  The first shaft 371 and the sliding portion 374 can be rotated around the axis N integrally. The height of the first shaft 371 is higher than the height of the fence 23H to the extent that the sliding portion 374 and the fence 23H do not interfere when the first shaft 371 and the sliding portion 374 rotate around the axis N. It is configured.

  The lower end of the second shaft 372 is connected to the other end of the sliding portion 374, and has a substantially cylindrical shape extending in the vertical direction. The diameter of the second shaft 372 is substantially the same as the diameter of the sliding portion 374. A connection hole 372 a is formed at the upper end of the second shaft 372. In the third embodiment, the second shaft 372 and the sliding portion 374 are integrally formed. The second shaft 372 can rotate around the axis N integrally with the first shaft 371 and the sliding portion 374. In FIG. 12, a center line S extending in the vertical direction through the center of the second shaft 372 is shown.

  The connecting portion 375 has a substantially cylindrical shape extending in the radial direction of the second shaft 372. The diameter of the connecting portion 375 is configured to be slightly smaller than the connecting hole 372 a of the second shaft 372. The connecting portion 375 is fixed to the second shaft 372 in a state where one end thereof is inserted into the connecting hole 372 a of the second shaft 372. The connecting portion 375 has a female screw hole 375a. The connecting portion 375 is integrated with the first shaft 371, the second shaft 372, and the sliding portion 374 as the first shaft 371, the second shaft 372, and the sliding portion 374 rotate about the axis N. It is possible to rotate around the axis N. The connecting portion 375 is an example of the “second arm” in the present invention.

  The pressing portion 73 is configured such that the pressing shaft 73 </ b> A is screwed into the female screw hole 375 a of the connecting portion 375 and is rotatable about the axis N. Further, the pressing portion 73 is rotatable about an axis O extending in the vertical direction through the center of the pressing shaft 73A in a plan view in a screwed state.

  Here, the distance between the members of the fixing mechanism 37 and the like will be described with reference to FIG.

  As shown in FIG. 12, the height of the first shaft 371, that is, the distance from the lower end to the upper end of the first shaft 371 is a distance H41. The distance H31 is a distance at which the first shaft 371 and the circular saw blade support 4 do not interfere even when the circular saw blade support 4 is tilted to the maximum tilt angle. The distance H4 indicates the distance from the lower end of the first shaft 371 to the upper end of the second shaft 372.

  The distance from the axis N to the center line S of the second shaft 372 is R41. The distance R41 retracts the second shaft 372 from the movement locus when the circular saw blade support 4 is tilted from the first posture (tilt angle 0 degree) to the second posture (tilt angle 45 degrees, maximum tilt angle). It is set to a sufficient distance. The distance R41 may be any distance as long as the second shaft 372 can be retracted from the movement trajectory, and may be configured shorter than the present embodiment. The radius of the pressing tool 73C is a radius R12. A distance R42 indicates the distance from the axis N to the axis O. The distance R42 is variable because the sliding portion 374 is configured to be relatively movable in the radial direction of the first shaft 371 with respect to the first shaft 371. The distance R4 indicates a distance obtained by adding the radius R12 of the pressing tool 73C of the pressing portion 73 to the distance R42. The distance R4 is variable because the distance R32 is variable. A distance R43 indicates a distance obtained by subtracting the radius R12 of the pressing tool 73C of the pressing portion 73 from the distance R42. The distance R43 is variable because the distance R32 is variable.

  Next, the pressable range of the fixing mechanism 37 will be described with reference to FIG.

  As shown in FIG. 10, the distance R4 is such that the second shaft 372 is located on the same side as the pressing portion 73 with respect to the first shaft 371 in the radial direction of the first shaft 371, and the first shaft 371, second shaft It becomes maximum when the shaft 372 and the pressing portion 73 are aligned. The distance R43 is minimized when the first restricting portion 374B of the sliding portion 374 contacts the outer peripheral surface of the first shaft 371. Further, the pressing portion 73 is rotatable about the axis N. In the present embodiment, the radius drawn by the outer edge of the pressing tool 73C in plan view when the distance R4 is maximized is inside the circle whose distance R1 is drawn, and the pressing tool 73C in plan view when the distance R43 is minimum. A range in which the radius drawn by the outer edge is surrounded by the outside of the circle having the distance R43 is a pressable range.

  Next, with reference to FIG. 12 and FIG. 13, a description will be given of an operation of fixing the material to be cut to the mounting surface of the base portion 2 using the fixing mechanism 37. Note that the cutting work using the tabletop circular saw 301 is the same as that of the tabletop circular saw 1, and thus the description thereof is omitted.

  First, the operator rotates the first shaft 371 about the axis N according to the position of the base material 2 on the placement surface of the material to be cut. At this time, the second shaft 372 can move to the right from the position where the fixing mechanism holding portion 23A is located. Accordingly, even when the circular saw blade support portion 4 is tilted, the fixing mechanism 37 and the protective cover 42C (the circular saw blade support portion 4) are separated from each other, and the fixing mechanism 37 and the protective cover 42C (the circular saw blade support portion are supported). The circular saw blade support portion 4 can be tilted to the maximum tilt angle without interference (contact) with the portion 4), and workability can be prevented from being lowered.

  Next, the operator adjusts the relative positions of the pressing portion 73 with respect to the first shaft 371 and the second shaft 372 in plan view. Specifically, as shown in FIGS. 12 and 13, the sliding portion 374 is slid in the radial direction of the first shaft 371. At this time, as shown in FIG. 12, the distance R41 between the axis N and the center line S can be made longer. Thus, even when the second shaft 372 is not moved to the right from the position where the fixing mechanism holding portion 23A is located, the circular saw blade support portion 4 can be tilted to the maximum tilt angle.

  Further, according to the tabletop circular saw 301 according to the fourth embodiment, the distance R4 of the fixing mechanism 37 is configured to be larger than the R0 of the fixing mechanism 700 (the pressing range is wide). When compared, it becomes possible to fix the cutting material in a wider range of the mounting surface.

  As described above, according to the tabletop circular saw 301 according to the fourth embodiment, the tabletop circular saw 1 according to the first embodiment, the table circular saw 101 according to the second embodiment, and the third embodiment. Produces the same effect as the tabletop circular saw 201.

  The sliding portion 374 is configured to be movable in the radial direction of the first shaft 371, and the pressing portion 73 is moved in the radial direction of the first shaft 371 by moving the sliding portion 374 in the radial direction of the first shaft 371. Since it is configured to be movable in the direction, the material to be cut can be fixed in a wide range of the mounting surface of the base portion 2. Even in the case of a tabletop circular saw when the circular saw blade support portion 4 is greatly moved in the left-right direction during tilting, the second shaft 372 and the circular saw blade can be suitably moved by moving the sliding portion 374 in the left-right direction. The interference of the support part 4 can be suppressed. Thus, in the fourth embodiment, the relative position of the second shaft 372 in the second direction with respect to the first shaft 371 is changed by moving the sliding portion 374 in the radial direction of the first shaft 371. The interference between the fixing mechanism 37 and the circular saw blade support portion 4 can be suitably suppressed.

  In the first to fourth embodiments, the table circular saws 1, 101, 201, and 301 have been described as examples of the table cutting machine. However, the present invention is applicable to any table cutting machine having an inclination mechanism. . For example, the present invention can be applied to a tabletop cutting machine that performs a cutting operation by sliding the cutting portion support portion in parallel with the mounting surface of the base portion.

  Further, in the present embodiment, the holder portion is tilted only in the right direction, but a desktop circular saw that can tilt in either the right direction or the left direction may be used.

DESCRIPTION OF SYMBOLS 1, 101, 201, 301 ... Desk circular saw 2 ... Base part 3 ... Holder part 4 ... Circular saw blade support part 5 ... Motor 6 ... Handle part 7, 17, 27, 37 ... Fixing mechanism

Claims (7)

A driving source;
A base portion having a mounting surface on which a material to be cut can be mounted;
A cutting blade support section that houses the driving source and is capable of detaching a cutting blade that receives the rotational force of the driving source and is rotatable about its own axis;
While being supported by the base portion and extending the cutting blade support portion substantially perpendicular to the axial direction of the cutting blade and extending substantially parallel to the mounting surface until reaching a predetermined angle A holder portion that is tiltably supported;
A tabletop cutting machine comprising: a fixing mechanism capable of fixing the material to be cut;
The base portion is provided with a fixing mechanism holding portion for holding the fixing mechanism,
The fixing mechanism includes a first part held by the fixing mechanism holding part, a second part supported by the first part so as to be movable relative to the first part, and the second part supported by the second part. A pressing portion capable of pressing the material to be cut,
When the cutting blade support portion is tilted by the predetermined angle, the first portion and the cutting blade support portion are separated from each other. The second portion is configured to be movable in a first direction perpendicular to the placement surface,
The tabletop cutting machine according to claim 1, wherein the pressing portion is configured to be movable in the first direction by moving the second portion in the first direction. The first portion extends in the first direction, and is configured to be rotatable around an axis extending in the first direction through the first portion;
The first part and the second part are connected by a first arm extending in a second direction parallel to the placement surface,
3. The second portion is configured to be movable by rotating the first portion around an axis extending through the first portion in the first direction. 4. Tabletop cutting machine. The second portion is configured to be rotatable around an axis extending in the second direction through the first arm,
The second pressing portion is configured to be movable in the first direction by rotating the second portion about an axis extending in the second direction through the first arm. Item 4. A tabletop cutting machine according to item 3. The first arm is configured to be movable in the second direction,
The tabletop cutting machine according to claim 4, wherein the first arm is moved in the second direction so that the pressing portion can be moved in the second direction. The second portion extends in the first direction and is configured to be rotatable around an axis extending in the first direction through the second portion;
The second portion and the pressing portion are connected by a second arm extending in a second direction parallel to the placement surface,
The said pressing part is comprised so that a movement is possible by rotating the said 2nd part centering on the axial center extended in the said 1st direction through the said 2nd part. Tabletop cutting machine. The tabletop cutting machine according to any one of claims 1 to 6, wherein the first portion is detachably held by the fixing mechanism holding portion.

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