Table saw

Abstract

To provide a table saw which can automatically suppress projection amount of a blade tool according to an inclination angle of the blade tool.SOLUTION: A table saw 1 comprises: a table 4 on which a cut material is laid; a body part 10 which is arranged below the table 4 and includes a motor; a blade tool 11 which is connected with the motor and penetrates the table 4 in a vertical direction; and a guide mechanism 40 which tilts the cutting tool 11 with the body part 10 relative to the table 4. The guide mechanism 40 moves downward a center 11a of the cutting tool 11 as a top edge of the cutting tool 11 approaches to the table 4 to be apart from the table 4 so as to be moved to a left side (a first side) of movement of the top edge and to a right side (a second side).SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] The present invention relates to a table saw used for cutting a material to be cut, such as wood. [Background technology]

[0002] This type of table saw has a table on which the workpiece is placed, and a disk-shaped cutting tool (circular saw blade) that penetrates the table and protrudes upward. The cutting tool is rotatably supported by a main body disposed below the table. The main body is provided with a motor as a drive source for rotating the cutting tool, and an output shaft to which the cutting tool is attached integrally. By starting the motor and rotating the output shaft about its axis, the cutting tool rotates integrally with the output shaft. The workpiece is fed along the table toward the cutting tool, which protrudes above the top surface of the table and rotates. The cutting tool cuts into the workpiece, cutting it.

[0003] As described in Patent Documents 1 and 2, the main body can be moved in the vertical direction relative to the table. By moving the main body in the vertical direction, the blade protruding height (cut depth) protruding upward from the top surface of the table can be changed. The blade protruding height refers to the length in the vertical direction perpendicular to the top surface of the table from the top end of the blade to the top surface of the table. The blade protruding amount refers to the length in the direction parallel to the blade from the top end of the blade to the table. By increasing the blade protruding height, for example, a thick material can be cut. By decreasing the blade protruding height, for example, groove cutting can be performed on the material to be cut. Furthermore, the main body can be tilted in the horizontal direction relative to the table. By tilting the main body in the horizontal direction, the inclination angle of the blade with respect to a plane perpendicular to the table can be changed. By making the blade perpendicular to the table (setting the inclination angle with respect to the plane perpendicular to the table to 0°), the material to be cut can be cut with a so-called right-angle cut. By tilting the blade with respect to a plane perpendicular to the table, the material to be cut can be cut with a so-called bevel cut. In the right-angle cutting position (hereinafter referred to as the "right-angle position"), the output shaft extends horizontally. Therefore, it is possible to increase the cutting tool projection height by moving the output shaft upward to the vicinity of the bottom surface of the table or the bottom surface of the cutting edge plate.

[0004] On the other hand, in the case of the inclined cutting position (hereinafter referred to as the "inclined position"), the output shaft is inclined toward either the left or right side with respect to the table. Therefore, if the body is tilted from the right-angle position with the cutting tool protruding height increased (the cutting tool protruding amount is increased) to the inclined position, the output shaft will interfere with the bottom surface of the table or the bottom surface of the cutting edge plate. In particular, if a cutting tool with a thick width for groove cutting can be attached to the output shaft, the output shaft needs to be extended longer. Therefore, in the inclined position, the output shaft is likely to interfere with the bottom surface of the table or the bottom surface of the cutting edge plate. Therefore, it is necessary to suppress the amount of cutting tool protrusion so that the output shaft does not interfere with the bottom surface of the table or the bottom surface of the cutting edge plate. However, if the amount of cutting tool protrusion is suppressed in consideration of the inclined position, a sufficient amount of cutting tool protrusion cannot be obtained when cutting a thick material to be cut in the right-angle position. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 11-10606 [Patent Document 2] JP 2010-42474 A Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, there has been a demand for a table saw that can automatically reduce the amount of protrusion of the cutting tool depending on the inclination angle of the cutting tool. [Means for solving the problem]

[0007] According to one feature of the present disclosure, a table saw has a table on which a workpiece to be cut is placed. The table saw has a body disposed below the table and equipped with a motor. The table saw has a cutting tool connected to the motor and passing through the table in the vertical direction. The table saw has a guide mechanism that tilts the cutting tool together with the body relative to the table. The guide mechanism moves the center of the cutting tool downward as the upper end of the cutting tool approaches the table, moving it away from the table and toward a second side opposite to the first side along which the upper end moves.

[0008] Therefore, the greater the inclination angle of the cutting tool relative to the plane perpendicular to the table, the closer the upper end of the cutting tool approaches the table. As the upper end of the cutting tool approaches the table, the cutting tool moves to the second side opposite the tilting direction. This reduces the length from the upper end of the cutting tool to the table in the direction parallel to the cutting tool, i.e., the amount of cutting tool protrusion. Thus, the greater the inclination angle of the cutting tool relative to the plane perpendicular to the table, the smaller the amount of cutting tool protrusion can be automatically suppressed. This prevents the output shaft that rotatably supports the cutting tool from interfering with the underside of the table during inclined cutting.

[0009] Moreover, the cutting tool is moved to the second side while tilting the top end of the tool to the first side. This allows the tool to be tilted without moving the intersection area (virtual tilt axis) where the tool and the extended surface of the table intersect. Therefore, for example, the distance between a rip fence positioned on the table and the intersection area can be kept constant. This allows the material to be cut to a constant width by placing it against the rip fence, whether cutting at a right angle or at an angle. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of a table saw according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a perspective view showing a state in which the cutting edge plate of the table saw is removed. [Diagram 3] FIG. 1 is a left side view of the table saw when in a right-angle position and with a maximum cutting tool protrusion amount. [Figure 4] FIG. 1 is a left side view of the table saw when in a right-angle position and with the cutting tool protruding to a minimum extent. [Diagram 5] FIG. 1 is a front view of the table saw when in a right-angle position and with a maximum cutting tool protrusion amount. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] FIG. 4 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] 8 is a cross-sectional view taken along line VIII-VIII in FIG. 4. [Figure 9] 7 is a longitudinal sectional view corresponding to the section taken along line VII-VII in FIG. 3 when the device is in an inclined position with an inclination angle of 30°. [Figure 10] 7 is a longitudinal sectional view corresponding to the cross section taken along line VII-VII in FIG. 3 when in an inclined position with an inclination angle of 45°. [Figure 11] FIG. 7 is an enlarged view of a portion XI in FIG. [Figure 12] 7 is an enlarged view of a portion XI in FIG. 6 in an inclined posture with an inclination angle of 30°. [Figure 13] 7 is an enlarged view of a portion XI in FIG. 6 in an inclined posture with an inclination angle of 45°. [Figure 14] 14 is a cross-sectional view taken along line XIV-XIV in FIG. [Figure 15] FIG. 15 is an enlarged view of part XV in FIG. [Figure 16] FIG. 4 is a top view showing the table saw with the cutting edge plate removed. [Figure 17] FIG. 13 is a top view showing the retraction amount of the cutting tool relative to the inclination angle of the cutting tool. [Figure 18] FIG. 11 is a left side view of a table saw according to a second embodiment of the present disclosure in a right-angled position with a maximum amount of cutting tool protrusion. [Figure 19] 19 is a cross-sectional view taken along line XIX-XIX in FIG. 18. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] According to another feature of the present disclosure, the guide mechanism has a first link connecting the table and the main body. The guide mechanism has a second link arranged on a first side of the first link and connecting the table and the main body. Therefore, by using two links, the first link and the second link, the cutting tool can be tilted on a trajectory different from a rotation about an intersection area where the extension planes of the cutting tool and the table intersect. Therefore, when the cutting tool is tilted, the cutting tool can be automatically moved so that the cutting tool protrusion amount is suppressed.

[0012] According to another feature of the present disclosure, the table saw has a first body-side shaft rotatably connecting a first link to the body. The table saw has a first table-side shaft rotatably connecting the first link to the table. The table saw has a second body-side shaft rotatably connecting a second link to the body. The table saw has a second table-side shaft connecting the second link to the table. The first body-side shaft is positioned farther from an intersection region of the tool and the table than the first table-side shaft. The second body-side shaft is positioned farther from the intersection region than the second table-side shaft.

[0013] Therefore, when the first link rotates around the first table-side shaft, the movement distance of the first main body-side shaft relative to the intersection region becomes longer. When the second link rotates around the second table-side shaft, the movement distance of the second main body-side shaft relative to the intersection region becomes longer. This allows the blade to be moved in a direction parallel to the blade with greater precision. This allows the blade to be moved accurately and smoothly so that the blade protrusion amount decreases as the inclination angle increases.

[0014] According to another feature of the present disclosure, the table saw has a first body-side shaft rotatably connecting a first link to the body. The table saw has a first table-side shaft rotatably connecting the first link to the table. The table saw has a second body-side shaft rotatably connecting a second link to the body. The table saw has a second table-side shaft rotatably connecting the second link to the table. The distance between the first body-side shaft and the second body-side shaft is greater than the distance between the first table-side shaft and the second table-side shaft.

[0015] Therefore, the first link rotates around the first table side shaft, and the second link rotates around the second table side shaft. At this time, since the distance between the first body side shaft and the second body side shaft is longer than the distance between the first table side shaft and the second table side shaft, the first body side shaft and the second body side shaft tend to move so as to rotate relative to each other rather than moving parallel to each other. Therefore, the body including the cutting tool can be prevented from moving parallel to the left and right. This allows the extension planes of the cutting tool and the table to maintain a state in which they intersect in the intersection area.

[0016] According to another feature of the present disclosure, the second link is longer than the first link. Therefore, as the cutting tool is tilted to the first side, the second body side shaft moves away from the intersection region. Therefore, as the cutting tool is tilted to the first side, the upper end of the cutting tool can be brought closer to the intersection region. This allows the cutting tool protrusion amount to be reduced as the inclination angle of the cutting tool increases.

[0017] According to another feature of the present disclosure, at least a part of the first link or the second link is disposed between the blade and the motor when viewed from a direction perpendicular to the tilting direction of the blade. Therefore, at least a part of the first link or the second link is disposed between the motor, which is heavy, and the blade. This can increase the stability of the posture of the main body, which is supported by the guide mechanism so as to be tiltable and movably.

[0018] According to another feature of the present disclosure, the table saw has a lifting shaft supported by the table and guiding the main body in a direction parallel to the cutting tool. At least a part of the first link or the second link is disposed between the cutting tool and the lifting shaft when viewed from a direction perpendicular to the tilting direction of the cutting tool. Therefore, the lifting shaft and the guide mechanism can be brought closer to each other in the direction perpendicular to the tilting direction of the cutting tool. Therefore, when an external force acts on the cutting tool, the rigidity of the main body can be maintained. Therefore, even if the amount of protrusion of the cutting tool is changed by the lifting shaft, the tilting and movement of the cutting tool by the guide mechanism can be made to follow the same path.

[0019] According to another feature of the present disclosure, the guide mechanism has a guide member that is supported by the table and guides the main body in a direction in which the main body is moved by the first link and the second link. The motor is disposed between the first link and the guide member in the front-rear direction in which the cutting tool extends. Therefore, the first link and the guide member can be disposed so as to sandwich the heavy motor therebetween. Therefore, the posture of the main body supported by the guide mechanism can be made more stable not only in the tilting direction but also in the front-rear direction.

[0020] According to another feature of the present disclosure, the table saw has a lifting shaft supported by the table and guiding the main body in a vertical direction. The guide mechanism has a guide member supported by the table and guiding the main body in a direction in which the main body is moved by the first link and the second link. The lifting shaft is disposed between the first link and the guide member in the front-rear direction in which the cutting tool extends. Therefore, the first link and the guide member can be provided so as to sandwich the lifting shaft therebetween. Therefore, the structure that supports the main body so that it can be lifted and lowered in a direction parallel to the cutting tool can be supported not only by the lifting shaft but also by the front and rear guide mechanisms. Therefore, the stability of the tilted trajectory that tilts the main body left and right can be increased.

[0021] According to another feature of the present disclosure, the table saw has a link support part that is releasably fixed to the table and connected to a link. The link support part has an elongated hole that passes through in the vertical direction so that a screw can be fitted therein, and the screw fitted in the elongated hole can be tightened to the table from above. Therefore, the screw can be loosened or tightened from above the table. Therefore, the position of the cutting tool relative to the table can be easily adjusted by moving the link support part.

[0022] According to another feature of the present disclosure, as the inclination angle of the blade with respect to the plane perpendicular to the table increases, the blade protrusion amount in the direction parallel to the blade decreases. The smaller the inclination angle, the more the protrusion amount decreases, and as the inclination angle increases, the amount of decrease decreases. Therefore, when the inclination angle of the blade with respect to the plane perpendicular to the table is close to 0°, the blade protrusion amount decreases significantly. Therefore, when the inclination angle of the blade is 0° and the blade is in a right-angled position, the blade protrusion amount can be sufficiently increased. When the blade is tilted even slightly, the output shaft supporting the blade can be quickly retracted downward so as not to interfere with the table or the like. In addition, the output shaft can be sufficiently retracted downward from the table when the inclination angle of the blade is small. Therefore, the reduction in the blade protrusion amount when the inclination angle of the blade is large can be suppressed. This makes it possible to ensure the required blade protrusion height even when the inclination angle of the blade is large.

[0023] A first embodiment of the present disclosure will be described with reference to Figs. 1 to 17. As shown in Fig. 1, a table saw 1 has a base 2 placed on a floor or the like, and a table 4 supported horizontally by the base 2. A material to be cut is placed on the table 4. A main body 10 is supported below the table 4. A substantially disk-shaped blade 11 called a tipped saw blade is rotatably supported on the main body 10. The blade 11 is supported by the main body 10 in a position extending in the front-rear direction. A user performs cutting work by positioning himself / herself on the front side of the table saw 1 as shown in the figure. In the following description, the front side where the user is positioned is defined as the front side, and the rear side as viewed from the user is defined as the rear side, and the front-rear direction is defined with respect to the user. The up-down and left-right directions are defined with respect to the user as a reference.

[0024] As shown in Figs. 1 and 2, the upper surface of the table 4 is provided with a through hole 4a that is approximately rectangular and long in the front-rear direction. A cutting edge plate 5 is attached to the through hole 4a. A slit-shaped through hole 5a that extends linearly in the front-rear direction is provided in the center of the cutting edge plate 5. The upper region of the cutting tool 11 is inserted into the through hole 5a from below and protrudes above the upper surface of the table 4. The lower region of the cutting tool 11 is covered by a blade case 13 (see Fig. 7) that is integrally provided with the main body 10 so as not to be exposed. The table 4 is provided with rail recesses 4f that extend in the front-rear direction on the left and right sides of the cutting edge plate 5. A miter gauge (not shown) can be attached to the rail recesses 4f. The fence surface of the miter gauge is inclined at a predetermined angle with respect to the material feed direction, and the miter gauge is slid in the extension direction of the rail recesses 4f (material feed direction) with the fence surface and the material to be cut in contact with each other. This allows the material to be cut at a predetermined angle with respect to the contact surface.

[0025] As shown in Figures 1 and 2, parallel ruler rails 7 extending in the left-right direction are provided in front of the front end and behind the rear end of the table 4. A parallel ruler (not shown) can be attached to the pair of parallel ruler rails 7a, 7b. The ruler surface of the parallel ruler is parallel to the material feed direction. The left-right distance between the cutting tool 11 and the ruler surface of the parallel ruler is adjusted to the required distance. By cutting the material while sliding it over the ruler surface, the material can be cut to the required left-right width.

[0026] As shown in Figs. 3 and 7, the main body 10 has a motor 21, a motor housing 20 that houses the motor 21, and an output shaft 12 that rotates around its axis when driven by the motor 21. The cutting tool 11 is attached to the output shaft 12 that extends in the left-right direction so that the cutting tool 11 can rotate integrally with the output shaft 12. The cutting tool 11 rotates around the central axis of the output shaft 12. In the following description, the intersection of the central axis of the cutting tool 11 and the output shaft 12 is defined as the center 11a of the cutting tool 11. The tip 12a of the output shaft 12 protrudes to the right side relative to the cutting tool 11. A male thread is formed on the outer circumference of the right part of the output shaft 12. The cutting tool 11 is sandwiched between an outer flange 12c and an inner flange 12d in the left-right direction, and a nut 12b is tightened onto the male thread of the output shaft 12. In this way, the cutting tool 11 is attached to the output shaft 12. Instead of the chip saw blade 11, a groove cutting blade consisting of multiple roughly disk-shaped blades arranged in the axial direction of the output shaft 12, known as a stacked dado set, can be attached to the output shaft 12. The output shaft 12 is provided with a length in both left and right directions that allows the stacked dado set to be attached.

[0027] 1 and 3, a workpiece placed on a table 4 is fed from the front to the rear toward a cutting tool 11 that protrudes above the top surface of the table 4 and rotates integrally with an output shaft 12. As a result, the cutting edge of the front region of the cutting tool 11 cuts relatively into the workpiece to cut it. An arc-shaped riving knife 6 is provided behind the rear region of the cutting tool 11, following the cutting edge of the cutting tool 11.

[0028] As shown in Figures 3 and 7, the motor housing 20 is disposed to the left of the cutting tool 11. The motor housing 20 and the motor shaft of the motor 21 extend parallel to the output shaft 12. A fan 22 for introducing cooling air into the motor 21 and the like is attached integrally to the motor shaft of the motor 21. The fan 22 is disposed to the right of the motor 21 within the motor housing 20. A gear housing 23 is provided between the motor housing 20 and the cutting tool 11. The gear housing 23 accommodates a reduction gear train 24 that reduces the rotational drive of the motor 21 and transmits it to the output shaft 12.

[0029] As shown in FIG. 3, the base 2 is provided with a battery mounting section 26 in which a rectangular box-shaped battery 25 can be removably mounted. The battery 25 is mainly used as a power source for the motor 21. The battery 25 can be mounted in the battery mounting section 26 by sliding it from left to right on the bottom surface of the battery mounting section 26. The battery 25 can be removed from the battery mounting section 26 by sliding it in the opposite direction to the mounting direction. The battery 25 is, for example, a lithium-ion battery with an output voltage of 36 V. The battery 25 can be removed from the battery mounting section 26 and repeatedly charged using a separately prepared charger. The battery 25 can be used as a power source for other rechargeable power tools such as a screwdriver or an electric drill. The battery 25 is not shown in the drawings except for FIGS. 3 and 18.

[0030] 1 and 5, a flat base front surface 3 extending in the up-down and left-right directions is provided at the front of the base 2. An arc-shaped hole 3a penetrating the base front surface 3 in the front-rear direction is provided. The arc-shaped hole 3a extends in an arc shape around the left-right tilt center of a lifting support part 34 described later. A rotation shaft 32 of a lifting mechanism 30 described later is inserted into the arc-shaped hole 3a.

[0031] As shown in Figs. 3, 4, 7 and 8, the table saw 1 has a lifting mechanism 30 that can change the vertical position of the cutting tool 11 relative to the table 4. The main body 10 has a lifting support part 34 that moves up and down due to a guide mechanism 40 described later but does not move up and down due to the lifting mechanism 30. The cutting tool 11, the output shaft 12, the motor housing 20, the gear housing 23, etc. are moved up and down relative to the lifting support part 34 by the lifting mechanism 30. The lifting mechanism 30 has a lifting handle 31 that can be rotated by a user and a rotating shaft 32 that is integrally provided with the lifting handle 31. The lifting handle 31 is provided in front of the front face of the base 3. The rotating shaft 32 extends in the front-rear direction on the rotation center of the lifting handle 31. The rotating shaft 32 is inserted into the arc-shaped hole 3a of the front face of the base 3. The lifting handle 31 and the rotating shaft 32 are supported by the lifting support part 34 so as to be rotatable around the axis. A driving bevel gear 32a is provided at the rear end of the rotating shaft 32.

[0032] As shown in Figs. 3, 4, 7, and 8, the lifting mechanism 30 has a lifting shaft 33 formed of a ball screw. The lifting shaft 33 is rotatably supported by a lifting support part 34 in a position extending in the vertical direction. The lifting shaft 33 is disposed between the cutting tool 11 and the motor 21 when viewed from the front-rear direction. The lifting shaft 33 is disposed between the front end of the cutting tool 11 and the center 11a of the cutting tool 11 when viewed from the left-right direction. A driven bevel gear 33a is provided at the lower end of the lifting shaft 33. The driven bevel gear 33a engages with a driving bevel gear 32a of the rotating shaft 32. When the rotating shaft 32 rotates around an axis extending in the front-rear direction, the lifting shaft 33 rotates around an axis extending in the vertical direction. The female screw 10a of the main body 10 is screwed into the lifting shaft 33. By rotating the lift shaft 33 around its axis, the main body 10 including the female screw 10a moves up and down by screw feed. The cutting tool 11 moves up and down together with the main body 10. This allows the cutting tool protrusion amount (cutting depth) by which the upper end 11b of the cutting tool 11 protrudes from the table 4 in a direction parallel to the cutting tool 11 to be changed.

[0033] As shown in Figs. 2, 3 and 6, the table saw 1 has a guide mechanism 40 that can change the inclination angle of the main body 10 with respect to a plane perpendicular to the table 4 and can change the amount of cutting tool protrusion. The main body 10 including the lifting support part 34 is supported on the base 2 so as to be tiltable in the left-right direction. A user can tilt the main body 10 left-right by gripping the lifting handle 31. When the lifting handle 31 is moved left-right, the rotation shaft 32 moves left-right along the extension direction of the arc-shaped hole 3a. The lifting handle 31 is provided with a lock lever 31a that releasably locks the left-right movement of the lifting handle 31. When the lock lever 31a is in an unlocked state, the lifting handle 31 can move left-right to tilt the main body 10. The guide mechanism 40 guides the main body 10 in left-right tilting and up-down movement parallel to the cutting tool 11.

[0034] 2 and 3, the guide mechanism 40 includes a front guide mechanism 40a provided in front of the blade 11, and a rear guide mechanism 40b provided behind the blade 11. For example, the blade 11, the output shaft 12, the motor 21, and the lift shaft 33 are arranged between the front guide mechanism 40a and the rear guide mechanism 40b in the front-rear direction. The rear guide mechanism 40b also corresponds to a guide member that guides the left-right tilting movement of the main body 10 in this disclosure.

[0035] As shown in Figs. 11 to 13 and 15, the guide mechanism 40 is provided with two linearly extending links, a first link 41 and a second link 44. The second link 44 is provided on the side where the blade 11 tilts relative to the first link 41, i.e., on the left side. The second link 44 is longer than the first link 41. The front guide mechanism 40a has a front first link 41a as the first link 41 and a front second link 44a as the second link 44. The rear guide mechanism 40b has a rear first link 41b as the first link 41 and a rear second link 44b as the second link 44. The front guide mechanism 40a as viewed from the front is provided with a structure symmetrical to the rear guide mechanism 40b as viewed from the rear. In other words, the front guide mechanism 40a and the rear guide mechanism 40b are provided so that their structures in the left-right direction are the same. In the following description, only the front guide mechanism 40a will be described in detail, but the rear guide mechanism 40b is also provided with a similar structure.

[0036] As shown in Figs. 6, 11 to 13, the first link 41 is connected to the main body 10 by a first main body side shaft 42 extending in the front-rear direction. The first link 41 is rotatable around the axis of the first main body side shaft 42. The second link 44 is connected to the main body 10 by a second main body side shaft 45 extending in the front-rear direction. The second link 44 is rotatable around the axis of the second main body side shaft 45. A link support part 50 that supports the first link 41 and the second link 44 is attached to the table 4. The structure for attaching the link support part 50 to the table 4 will be described in detail later. The first link 41 is connected to the main body 10 by a first table side shaft 43 extending in the front-rear direction. The first link 41 is rotatable around the axis of the first table side shaft 43. The second link 44 is connected to the main body 10 by a second table side shaft 46 extending in the front-rear direction. The second link 44 is rotatable around the axis of the second table side shaft 46.

[0037] As shown in Figs. 6, 11 to 13, the front guide mechanism 40a and the rear guide mechanism 40b are arranged such that the second table side shaft 46 is disposed to the right of the intersection area C where the extension plane of the cutting tool 11 and the table 4 intersect in the left-right direction. The first table side shaft 43 is disposed to the right and below the second table side shaft 46. When the inclination angle of the cutting tool 11 with respect to the plane S perpendicular to the table 4 is 0°, the first body side shaft 42 is located almost directly below the second table side shaft 46. When the inclination angle of the cutting tool 11 with respect to the plane S is 45°, the first body side shaft 42 is located to the right and below the first table side shaft 43. When the inclination angle of the cutting tool 11 with respect to the plane S is between 0° and 45°, the first body side shaft 42 is disposed farther away from the intersection area C than the first table side shaft 43. An intersection area C between the cutting tool 11 and the extension surface of the table 4 is an area having a width at least equal to the thickness of the cutting tool 11.

[0038] 6 and 11, when the inclination angle of the cutting tool 11 with respect to the plane S is 0°, the second body-side shaft 45 is located to the left of and below the second table-side shaft 46 and to the left of and above the first body-side shaft 42. When the inclination angle of the cutting tool 11 with respect to the plane S is 45°, the second body-side shaft 45 is located approximately directly below the second table-side shaft 46. When the inclination angle of the cutting tool 11 with respect to the plane S is between 0° and 45°, the second body-side shaft 45 is disposed farther away from the intersection region C than the second table-side shaft 46.

[0039] As shown in Figs. 6, 11 to 13, the second main body side shaft 45 is located between the blade 11 and the right end of the motor 21 in a direction perpendicular to the blade 11, regardless of the inclination angle of the blade 11 with respect to the plane S. Therefore, regardless of the inclination angle of the blade 11 with respect to the plane S, at least a part of the second link 44 is arranged between the blade 11 and the motor 21 when viewed from the front or rear. The second main body side shaft 45 is located on a substantial extension of the lift shaft 33 when viewed from the front or rear, regardless of the inclination angle of the blade 11 with respect to the plane S. Therefore, regardless of the inclination angle of the blade 11 with respect to the plane S, at least a part of the second link 44 is arranged between the blade 11 and the lift shaft 33 when viewed from the front or rear.

[0040] 11, a first distance D1 between the first body side shaft 42 and the second body side shaft 45 is longer than a second distance D2 between the first table side shaft 43 and the second table side shaft 46. The state in which the first distance D1 is longer than the second distance D2 is maintained regardless of whether the inclination angle of the cutting tool 11 with respect to the plane S is 0° to 45°. A third distance D3 between the first body side shaft 42 and the first table side shaft 43 is shorter than a fourth distance D4 between the second body side shaft 45 and the second table side shaft 46.

[0041] In the right-angle position shown in Figures 6 and 7, the inclination angle of the cutting tool 11 with respect to a plane S perpendicular to the table 4 is 0°. At this time, the workpiece can be cut in a so-called right-angle cut. The output shaft 12 extends parallel to the table 4 below the table 4 or the cutting edge plate 5. Therefore, the output shaft 12 does not interfere with the table 4 or the cutting edge plate 5. The cutting tool protrusion amount L1 is the distance from the upper end 11b of the cutting tool 11 to the table 4 in a direction parallel to the cutting tool 11. In the right-angle position, it is possible to cut a workpiece having a thickness close to the length of the radius of the cutting tool 11.

[0042] As shown in Figs. 9 and 12, the main body 10 is tilted to the left inclined position. At this time, the inclination angle A of the blade 11 with respect to the plane S is 30°. At this time, the workpiece can be cut by so-called oblique cutting. The blade 11 maintains a state of intersecting with the extended surface of the table 4 in the same crossing area C as in the right-angle position. The upper end 11b of the blade 11 is closer to the table 4 by the amount of the inclination of the blade 11. The first main body side shaft 42 and the second main body side shaft 45 are farther away from the crossing area C than in the right-angle position. Moreover, since the second link 44 is longer than the first link 41, the left part of the main body 10 is farther away from the crossing area C than the right part of the main body 10. As a result, the main body 10 including the blade 11 moves to the right and downward than in the right-angle position. The center 11a of the blade 11 moves downward than in the right-angle cut and moves away from the table 4.

[0043] As shown in Fig. 9, the output shaft 12 extends in a direction inclined at 30° with respect to the table 4. A tip 12a at the right end of the output shaft 12 is located below the lower surface of the table 4 and the lower surface of the cutting edge plate 5. Therefore, the output shaft 12 does not interfere with the table 4 or the cutting edge plate 5. The cutting tool protrusion amount L2 is the distance from the upper end 11b of the cutting tool 11 to the table 4 in a direction parallel to the cutting tool 11. The cutting tool protrusion amount L2 is shorter than the cutting tool protrusion amount L1 (see Fig. 6).

[0044] As shown in Figs. 10 and 13, the main body 10 is further tilted to the left. At this time, the inclination angle A of the blade 11 with respect to the plane S is 45°. At this time, the workpiece can be cut by so-called oblique cutting. The blade 11 maintains a state of intersecting with the extended surface of the table 4 in the same crossing region C as in the right-angle position. The upper end 11b of the blade 11 is closer to the table 4 by the amount of the inclination of the blade 11. The first main body side shaft 42 and the second main body side shaft 45 are further away from the crossing region C than in the right-angle position and when the blade 11 is in an inclined position with an inclination angle of 30°. Moreover, since the second link 44 is longer than the first link 41, the left part of the main body 10 is farther away from the crossing region C than the right part of the main body 10. As a result, the main body 10 including the blade 11 moves further rightward and downward. The center 11a of the cutting tool 11 moves downward and away from the table 4 more than when the cutting tool 11 is in the right-angled position and when the inclination angle of the cutting tool 11 is 30°.

[0045] As shown in Fig. 10, the output shaft 12 extends in a direction inclined at 45° with respect to the table 4. A tip 12a at the right end of the output shaft 12 is positioned lower than the lower surface of the table 4 or the lower surface of the cutting edge plate 5. Therefore, the output shaft 12 does not interfere with the table 4 or the cutting edge plate 5. The cutting tool protrusion amount L3 is the distance from the upper end 11b of the cutting tool 11 to the table 4 in a direction parallel to the cutting tool 11. The cutting tool protrusion amount L3 is even shorter than the cutting tool protrusion amount L2 (see Fig. 9).

[0046] 6 and 11 to 13, the main body 10 including the cutting tool 11 is moved rightward and downward by the guide mechanism 40 as it tilts leftward. Moreover, the inclination angle of the cutting tool 11 can be continuously changed, and the left-right and front-back positions of the main body 10 including the cutting tool 11 can be continuously changed. Therefore, the material to be cut can be cut with the cutting tool 11 at an inclination angle other than that shown in the figures, for example, at an inclination angle of 5°, 10°, 20°, 40°, etc.

[0047] 7, 9, 10, and 17, the relationship between the inclination angle of the blade 11 with respect to the plane S perpendicular to the table 4 and the retraction amount of the blade 11 in a direction parallel to the blade 11 will be described. The retraction amount of the blade 11 is set to 0 mm when the inclination angle of the blade 11 with respect to the plane S is 0°. As the inclination angle increases, the total retraction amount of the blade 11 increases. Also, as the inclination angle increases, the increment of the retraction amount of the blade 11 decreases. That is, the smaller the inclination angle, the larger the retraction amount of the blade 11 per inclination angle. As the inclination angle decreases, the retraction amount of the blade 11 per inclination angle decreases. For example, the retraction amount of the blade 11 in the inclination angle range of 0° to 5° is 3.28 mm. For example, the retraction amount of the blade 11 in the inclination angle range of 15° to 20° is about 2.08 mm. For example, the retraction amount of the cutting tool 11 in the range of the inclination angle of 30° to 35° is about 0.97 mm. Therefore, the graph shown in Fig. 17 depicts a so-called upwardly convex curve.

[0048] 2 and 16, the link support 50 includes a front link support 50a attached to the front lower part of the through hole 4a of the table 4, and a rear link support 50b attached to the rear lower part of the through hole 4a. The link support 50 can be attached integrally to the table 4 by fastening a screw 54 from above with the cutting edge plate 5 removed. On both the left and right ends of the link support 50, substantially cylindrical bosses 53 are provided with screw holes 53a extending in the front-rear direction (see FIG. 11). Between the pair of bosses 53, a substantially cylindrical boss 51 to which a screw is fastened as the first table-side shaft 43, and a substantially cylindrical boss 52 to which a screw is fastened as the second table-side shaft 46 are provided.

[0049] As shown in FIG. 16, a long hole 4b is provided at the right front end of the through hole 4a of the table 4, penetrating in the vertical direction so that a screw 54 (see FIG. 11) fastened to the right screw hole 53a of the front link support part 50a can be inserted therethrough. The long hole 4b is provided in an elliptical shape that is slightly longer in the front-rear direction than the screw hole 53a. A circular hole 4c is provided at the left front end of the through hole 4a of the table 4, penetrating in the vertical direction so that a screw 54 fastened to the left screw hole 53a of the front link support part 50a can be inserted therethrough. The circular hole 4c is provided in a circular shape with approximately the same diameter as the screw hole 53a. By providing the long hole 4b in an elliptical shape, the position (angle) in the rotation direction around the circular hole 4c of the front link support part 50a can be finely adjusted when attached to the table 4.

[0050] As shown in FIG. 16, an elongated hole 4d is provided at the right rear end of the through hole 4a of the table 4, penetrating in the vertical direction so that the screw 54 (see FIG. 2) fastened to the right screw hole 53a of the rear link support part 50b can be inserted therethrough. The elongated hole 4d is provided in an elliptical shape that is longer in the horizontal direction than the screw hole 53a. At the left rear end of the through hole 4a of the table 4, an elongated hole 4e is provided at the left rear end of the through hole 4a of the table 4, penetrating in the vertical direction so that the screw 54 fastened to the left screw hole 53a of the rear link support part 50b can be inserted therethrough. The elongated hole 4d is provided in an elliptical shape that is longer in the horizontal direction than the screw hole 53a. By providing the elongated holes 4d and 4e in an elliptical shape, the rear link support part 50b can be attached to the table 4 while finely adjusting the horizontal position thereof. Therefore, the cutting edge plate 5 is removed, and the four screws 54 on the front, rear, left and right sides are loosened to fine-tune the angle of the front link support part 50a and the left and right position of the rear link support part 50b (as a result, the cutting tool 11 rotates around the circular hole 4c). This allows the cutting tool 11 to be adjusted so that it is parallel to the rail recess 4f.

[0051] As described above, the table saw 1 has a table 4 on which a workpiece is placed, as shown in Figs. 6, 11 to 13. The table saw 1 has a body 10 disposed below the table 4 and equipped with a motor 21. The table saw 1 has a cutting tool 11 connected to the motor 21 and passing through the table 4 in the vertical direction. The table saw 1 has a guide mechanism 40 that tilts the cutting tool 11 together with the body 10 relative to the table 4. The guide mechanism 40 moves the center 11a of the cutting tool 11 downward as the upper end 11b of the cutting tool 11 approaches the table 4, moving it away from the table 4 and to the right (second side) opposite to the left (first side) to which the upper end 11b moves.

[0052] Therefore, the larger the inclination angle of the cutting tool 11 with respect to the plane S perpendicular to the table 4, the closer the upper end 11b of the cutting tool 11 approaches the table 4. As the upper end 11b of the cutting tool 11 approaches the table 4, the cutting tool 11 moves to the right, opposite the tilting direction. This reduces the length from the upper end 11b of the cutting tool 11 to the table 4 in the direction parallel to the cutting tool 11, i.e., the amount of cutting tool protrusion. Thus, the amount of cutting tool protrusion can be automatically reduced as the inclination angle of the cutting tool 11 with respect to the plane S perpendicular to the table 4 increases. This makes it possible to prevent the output shaft 12, which rotatably supports the cutting tool 11, from interfering with the underside of the table 4 during inclined cutting.

[0053] Moreover, the cutting tool 11 is moved to the right while tilting the upper end 11b of the cutting tool 11 to the left. This allows the cutting tool 11 to be tilted without moving the intersection area C (virtual tilt axis) where the extension plane of the cutting tool 11 and the table 4 intersect. Therefore, for example, the distance between the parallel ruler positioned on the table 4 and the intersection area C can be kept constant. This allows the material to be cut to a constant width by placing it against the parallel ruler whether cutting at a right angle or at an angle.

[0054] 6, 11 to 13, the guide mechanism 40 has a first link 41 that connects the table 4 and the main body 10. The guide mechanism 40 has a second link 44 that is disposed to the left (first side) of the first link 41 and connects the table 4 and the main body 10. Therefore, by using two links, the first link 41 and the second link 44, the blade 11 can be tilted on a trajectory different from the rotation about the intersection area C where the extension planes of the blade 11 and the table 4 intersect. Therefore, when the blade 11 is tilted, the blade 11 can be automatically moved so that the blade protrusion amount is suppressed.

[0055] As shown in FIG. 11 , the table saw 1 has a first body-side shaft 42 that rotatably connects the first link 41 to the body 10. The table saw 1 has a first table-side shaft 43 that rotatably connects the first link 41 to the table 4. The table saw 1 has a second body-side shaft 45 that rotatably connects the second link 44 to the body 10. The table saw 1 has a second table-side shaft 46 that connects the second link 44 to the table 4. The first body-side shaft 42 is disposed farther from the intersection region C of the cutting tool 11 and the table 4 than the first table-side shaft 43. The second body-side shaft 45 is disposed farther from the intersection region C than the second table-side shaft 46.

[0056] Therefore, when the first link 41 rotates about the first table-side shaft 43, the movement distance of the first main body-side shaft 42 relative to the intersecting region C becomes longer. When the second link 44 rotates about the second table-side shaft 46, the movement distance of the second main body-side shaft 45 relative to the intersecting region C becomes longer. This allows the action of moving the cutting tool 11 in a direction parallel to the cutting tool 11 to be large and accurate. This allows the cutting tool 11 to be moved accurately and smoothly so that the cutting tool protrusion amount becomes smaller as the inclination angle becomes larger.

[0057] As shown in FIG. 11 , the table saw 1 has a first body-side shaft 42 that rotatably connects the first link 41 to the body 10. The table saw 1 has a first table-side shaft 43 that rotatably connects the first link 41 to the table 4. The table saw 1 has a second body-side shaft 45 that rotatably connects the second link 44 to the body 10. The table saw 1 has a second table-side shaft 46 that rotatably connects the second link 44 to the table 4. A first distance D1 between the first body-side shaft 42 and the second body-side shaft 45 is longer than a second distance D2 between the first table-side shaft 43 and the second table-side shaft 46.

[0058] Therefore, the first link 41 rotates around the first table-side shaft 43, and the second link 44 rotates around the second table-side shaft 46. At this time, since the first distance D1 is longer than the second distance D2, the first body-side shaft 42 and the second body-side shaft 45 tend to move so as to rotate relative to each other rather than moving parallel to each other. This makes it possible to prevent the main body 10 including the cutting tool 11 from moving parallel to the left and right. This makes it possible to maintain a state in which the extension planes of the cutting tool 11 and the table 4 intersect at the intersection region C.

[0059] 11, the second link 44 is longer than the first link 41. Therefore, as the cutting tool 11 is tilted leftward, the second main body side shaft 45 moves away from the intersection region C. Therefore, as the cutting tool 11 is tilted leftward, the upper end 11b of the cutting tool 11 can be brought closer to the intersection region C. This allows the cutting tool protrusion amount to be reduced as the inclination angle of the cutting tool 11 increases.

[0060] 6, at least a part of the first link 41 or the second link 44 is disposed between the blade 11 and the motor 21 when viewed from a direction perpendicular to the tilting direction of the blade 11. Therefore, at least a part of the first link 41 or the second link 44 is disposed between the heavy motor 21 and the blade 11. This can increase the stability of the posture of the main body 10 supported by the guide mechanism 40 so as to be tiltable and movably.

[0061] As shown in FIG. 6, the table saw 1 has a lifting shaft 33 that is supported by the table 4 and guides the main body 10 in a direction parallel to the cutting tool 11. At least a part of the first link 41 or the second link 44 is disposed between the cutting tool 11 and the lifting shaft 33 when viewed from a direction perpendicular to the tilting direction of the cutting tool 11. Therefore, the lifting shaft 33 and the guide mechanism 40 can be brought closer to each other in the direction perpendicular to the tilting direction of the cutting tool 11. Therefore, when an external force acts on the cutting tool 11, the rigidity of the main body 10 can be maintained. Therefore, even if the cutting tool protrusion amount is changed by the lifting shaft 33, the tilting and movement of the cutting tool 11 by the guide mechanism 40 can be made to follow the same path.

[0062] As shown in Fig. 3, the guide mechanism 40 has a rear guide mechanism (guide member) 40b that is supported by the table 4 and guides the main body 10 in a direction in which it moves via a front first link 41a and a front second link 44a. The motor 21 is disposed between the front first link 41a and the rear guide mechanism 40b in the front-rear direction in which the cutting tool 11 extends. Therefore, the front first link 41a and the rear guide mechanism 40b can be provided so as to sandwich the heavy motor 21 therebetween. Therefore, the posture of the main body 10 supported by the guide mechanism 40 can be made more stable not only in the tilting direction but also in the front-rear direction.

[0063] As shown in FIG. 3, the table saw 1 has a lifting shaft 33 that is supported by the table 4 and guides the main body 10 in the vertical direction. The guide mechanism 40 has a rear guide mechanism (guide member) 40b that is supported by the table 4 and guides the main body 10 in the direction of movement by the front first link 41a and the front second link 44a. The lifting shaft 33 is disposed between the front first link 41a and the rear guide mechanism 40b in the front-rear direction in which the cutting tool 11 extends. Therefore, the front first link 41a and the rear guide mechanism 40b can be provided so as to sandwich the lifting shaft 33 therebetween. Therefore, the structure that supports the main body 10 so that it can be lifted and lowered in a direction parallel to the cutting tool 11 can be supported not only by the lifting shaft 33 but also by the front and rear guide mechanisms 40. Therefore, the stability of the tilted track that tilts the main body 10 left and right can be improved.

[0064] As shown in Fig. 16, the table saw 1 has a link support 50 that is releasably fixed to the table 4 and is connected to the first link 41 and the second link 44. The link support 50 has long holes 4b, 4d, and 4e that pass through in the vertical direction so that screws 54 (see Fig. 2) can be fitted thereinto, and the screws 54 fitted into the long holes 4b, 4d, and 4e can be fastened to the table 4 from above. Therefore, the screws 54 can be loosened or fastened from above the table 4. Therefore, the parallelism between the cutting tool 11 and the rail recess 4f can be easily adjusted by moving the link support 50.

[0065] As shown in FIG. 17, as the inclination angle of the cutting tool 11 with respect to the plane S perpendicular to the table 4 increases, the amount of cutting tool protrusion in the direction parallel to the cutting tool 11 decreases (see FIGS. 6, 11 to 13). The smaller the inclination angle, the more the protrusion amount decreases, and as the inclination angle increases, the amount of reduction decreases. Therefore, when the inclination angle of the cutting tool 11 with respect to the plane S perpendicular to the table 4 is close to 0°, the amount of cutting tool protrusion decreases significantly. Therefore, when the inclination angle of the cutting tool 11 is 0° and the cutting tool 11 is in a right-angled position, the amount of cutting tool protrusion can be made sufficiently large. When the cutting tool 11 is inclined even slightly, the output shaft 12 supporting the cutting tool 11 can be quickly retracted downward so as not to interfere with the table 4, etc. In addition, when the inclination angle of the cutting tool 11 is small, the output shaft 12 can be sufficiently retracted downward from the table 4. Therefore, the reduction in the amount of cutting tool protrusion when the inclination angle of the cutting tool 11 is large can be suppressed. As a result, even when the inclination angle of the cutting tool 11 is large, the necessary amount of cutting tool protrusion can be secured.

[0066] Next, a second embodiment of the present disclosure will be described with reference to Figs. 18-19. A table saw 60 of the second embodiment has a guide mechanism 61 instead of the guide mechanism 40 of the table saw 1 shown in Fig. 3. The guide mechanism 61 includes a front guide mechanism 61a provided in front of the cutting tool 11 and a rear guide mechanism 61b provided behind the cutting tool 11. The cutting tool 11, the output shaft 12, the motor 21, the lift shaft 33, etc. are arranged between the front guide mechanism 61a and the rear guide mechanism 61b in the front-rear direction. The front guide mechanism 61a has a first link 41 and a second link 44 as in the first embodiment. The rear guide mechanism 61b does not have a link mechanism, but instead has a guide member 62 that guides the tilting of the main body 10. In the following description, only parts different from the first embodiment will be described in detail.

[0067] As shown in Figs. 18 and 19, the guide member 62 is a plate-like member with the plate thickness direction being the front-rear direction. The guide member 62 is provided in a substantially fan-shape when viewed from the rear. The upper part of the guide member 62 is attached to the rear link support part 50b by a screw 64. The guide member 62 is provided with an arc-shaped hole 62a that penetrates in the front-rear direction and extends in an arc shape in the left-right direction. A shaft member 63 attached to the main body 10 is inserted into the arc-shaped hole 62a. When the cutting tool 11 is tilted, the shaft member 63 moves along the extension direction of the arc-shaped hole 62a. Therefore, when the main body 10 including the cutting tool 11 moves while tilting by the front guide mechanism 61a, the tilt and movement of the main body 10 can be guided by the guide member 62 even at the rear of the main body 10. By not providing a link to the rear guide mechanism 61b, the structure can be simplified.

[0068] As described above, the guide mechanism 61 has a guide member 62 that is supported by the table 4 as shown in Fig. 18 and guides the main body 10 in a direction in which it moves via the front first link 41a and the front second link 44a. The motor 21 is disposed between the front first link 41a and the guide member 62 in the front-rear direction in which the cutting tool 11 extends. Therefore, the front first link 41a and the guide member 62 can be provided so as to sandwich the heavy motor 21 therebetween. Therefore, the posture of the main body 10 supported by the guide mechanism 61 can be made more stable not only in the tilting direction but also in the front-rear direction.

[0069] As shown in FIG. 18, the table saw 60 has a lifting shaft 33 supported by the table 4 and guiding the main body 10 in the vertical direction. The guide mechanism 61 has a guide member 62 supported by the table 4 and guiding the main body 10 in the direction of movement by the front first link 41a and the front second link 44a. The lifting shaft 33 is disposed between the front first link 41a and the guide member 62 in the front-rear direction in which the cutting tool 11 extends. Therefore, the front first link 41a and the guide member 62 can be provided so as to sandwich the lifting shaft 33 therebetween. Therefore, the structure that supports the main body 10 so that it can be raised and lowered in a direction parallel to the cutting tool 11 can be supported not only by the lifting shaft 33 but also by the front and rear guide mechanisms 61. Therefore, the stability of the posture of the main body 10 can be improved.

[0070] Various modifications can be made to the table saw 1, 60 of this embodiment described above. Instead of the cutting tool 11 of the tipped saw, a cutter set having a large axial thickness can be attached to the output shaft 12. To enable the attachment of the cutter set, the output shaft 12 extends longer to the right. However, as shown in this embodiment, as the main body 10 including the cutting tool 11 is tilted left and right, it is moved downward in the opposite direction to the tilting direction. This makes it possible to sufficiently suppress interference between the output shaft 12 and the table 4 even when the output shaft 12 is tilted relative to the table 4.

[0071] The table saws 1 and 60 are exemplified in which the upper end 11b of the cutting tool 11 is tilted to the left. Alternatively, the upper end 11b of the cutting tool 11 may be tilted to the right. The inclination angle of the cutting tool 11 with respect to the plane S perpendicular to the table 4 is set to 0° to 45°, but the range of the tiltable angle may be changed as appropriate. For example, the cutting tool 11 may be tilted at an inclination angle of 45° or more. For example, the inclination angle at which the upper end 11b of the cutting tool 11 is tilted to the left may be positive, and the inclination angle of the cutting tool may be tilted from a negative state to a positive state.

[0072] The lifting shaft 33 is configured with a ball screw. Alternatively, the lifting shaft 33 may be, for example, a pole on which the main body 10 can slide. The table saw 1 is illustrated in which the motor 21 is driven by a rechargeable battery 25 as a power source. Alternatively, an AC power source such as a commercial 100V AC power source may be used as the power source.

[0073] The above-described guide mechanism 61 is exemplified in which the guide member 62 is provided behind the cutting tool 11, and the first link 41 and the second link 44 are provided only in front of the cutting tool. Alternatively, the guide member 62 may be provided in front of the cutting tool 11, and the first link 41 and the second link 44 may be provided only behind the cutting tool. [Explanation of symbols]

[0074] 1. Table saw 2. Base 3...base front surface, 3a...arc-shaped hole 4...Table, 4a...Through hole, 4b...Long hole, 4c...Circular hole, 4d,4e...Long hole 4f…Rail recess 5...Blade plate, 5a...Through hole 6…Riving knife 7, 7a, 7b...Rails for parallel rulers 10...Main body, 10a...Female thread 11...Cutter, 11a...Center, 11b...Top end 12...output shaft, 12a...tip, 12b...nut, 12c...outer flange 12d…Inner flange 13…Blade case 20…Motor housing 21…Motor 22...Fan 23...Gear housing 24...Reduction gear train 25…Battery 26…Battery mounting section 30...Lifting mechanism 31...Lifting handle, 31a...Lock lever 32...rotating shaft, 32a...drive side bevel gear 33... lift shaft, 33a... driven bevel gear 34…Lifting support part 40... guide mechanism, 40a... front guide mechanism, 40b... rear guide mechanism (guide member) 41...first link, 41a...front first link, 41b...rear first link 42…First body side shaft 43…First table side axis 44... second link, 44a... front second link, 44b... rear second link 45…Second body side shaft 46…Second table side axis 50...link support portion, 50a...front link support portion, 50b...rear link support portion 51...Boss 52...Boss 53... boss, 53a... screw hole 54…Screw 60…Table saw 61... guide mechanism, 61a... front guide mechanism, 61b... rear guide mechanism 62... guide member, 62a... arc-shaped hole 63...Shaft member 64…Screw S…Plane A…Inclination angle C…intersection area L1, L2, L3…cutting tool protrusion amount D1: First interval D2…Second interval D3: Third interval D4: Fourth interval

Claims

1. It is a table saw, A table on which the material to be cut is placed, A main body, which is located below the aforementioned table and is equipped with a motor, A cutting tool connected to the motor and penetrating the table in the vertical direction, A table saw having a guide mechanism that tilts the cutting tool together with the main body with respect to the table, wherein the guide mechanism moves the center of the cutting tool downward and away from the table as the upper end of the cutting tool approaches the table, and moves the upper end in a second side opposite to the first side to which it moves.

2. A table saw according to claim 1, The guide mechanism is a table saw having a first link connecting the table and the main body, and a second link positioned first to the side of the first link and connecting the table and the main body.

3. A table saw according to claim 2, A first main body side shaft rotatably connects the first link to the main body, A first table-side shaft rotatably connects the first link to the table, A second main body side shaft rotatably connects the second link to the main body, The second link has a second table-side shaft that connects to the table, The first main body side axis is positioned further away from the intersection region of the cutting tool and the table than the first table side axis. A table saw in which the second main body side axis is positioned further from the intersection region than the second table side axis.

4. A table saw according to claim 2 or 3, A first main body side shaft rotatably connects the first link to the main body, A first table-side shaft rotatably connects the first link to the table, A second main body side shaft rotatably connects the second link to the main body, The second link has a second table-side shaft that rotatably connects to the table, A table saw in which the distance between the first main body shaft and the second main body shaft is longer than the distance between the first table shaft and the second table shaft.

5. A table saw according to claim 2 or 3, The second link is a table saw that is longer than the first link.

6. A table saw according to claim 2 or 3, A table saw in which, when viewed from a direction perpendicular to the tilting direction of the cutting tool, at least a portion of the first link or the second link is positioned between the cutting tool and the motor.

7. A table saw according to claim 2 or 3, The table is supported and has a lifting shaft that guides the main body in a direction parallel to the cutting tool, A table saw wherein, when viewed from a direction perpendicular to the tilting direction of the cutting tool, at least a portion of the first link or the second link is positioned between the cutting tool and the lifting shaft.

8. A table saw according to claim 2 or 3, The guide mechanism has a guide member that is supported by the table and guides the main body in the direction of movement by the first link and the second link. A table saw in which the motor is positioned between the first link and the guide member in the front-to-back direction in which the cutting tool extends.

9. A table saw according to claim 2 or 3, The table is supported and has a lifting shaft that guides the main body in a direction parallel to the cutting tool, The guide mechanism has a guide member that is supported by the table and guides the main body in the direction of movement by the first link and the second link. A table saw in which the lifting shaft is positioned between the first link and the guide member in the front-to-back direction in which the cutting tool extends.

10. A table saw according to claim 2 or 3, The table has a link support that is releasably fixed and connected to the first link and the second link, The link support portion is provided with an elongated hole that penetrates vertically so as to allow a screw to be fitted into it, and the screw fitted into the elongated hole can be tightened onto the table from above in the table saw.

11. A table saw according to any one of claims 1 to 3, A table saw wherein the amount of protrusion of the cutting tool in a direction parallel to the cutting tool decreases as the inclination angle of the cutting tool with respect to a plane perpendicular to the table increases, and the amount of protrusion decreases more as the inclination angle decreases and decreases as the inclination angle increases.

Images