JP2018075693A - Table cutting-machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve handling of a detached auxiliary fence by solving a problem in that a positioning fence with a conventional two-stage (upper-and-lower) structure is provided in a table cutting-machine including a cutting machine body with a rotary blade, a table on which a material to be cut is placed, and a positioning fence for positioning this material in the direction of a table surface; however, an accommodating place for a detached auxiliary fence on the upper stage has not been taken into consideration, leading to loss of the auxiliary fence.SOLUTION: In a case where a jutting part 14 on a side part of a base 10 has holder metal fitting 15, a detached auxiliary fence 82 can be accommodated by its being placed and hooked on the holder metal fitting 15. The auxiliary fence 82 thus placed and hooked is held in an accommodated position, for example, by its being clipped with respect to a front support part 15a of the holder metal fitting 15.SELECTED DRAWING: Figure 29

Description

  The present invention relates to a table-top cutting machine, which is referred to as a slide marnoco or tabletop marnoco, mainly used for cutting wood.

  This type of tabletop cutting machine includes a table on which a cutting material is placed, and a cutting machine body supported at the rear part of the table so as to be movable up and down. The cutting machine body includes a circular cutting blade (blade) that rotates using an electric motor as a drive source. Cutting is performed by cutting a rotary blade that rotates by moving the cutting machine body downward into a cutting material on the table.

  In this type of tabletop cutting machine, a positioning fence for positioning the cutting material in the table surface direction is provided above the table. This positioning fence is provided with a positioning surface orthogonal to the table upper surface (the surface on which the cutting material is placed). The cutting material is positioned in the table surface direction by bringing the side portion of the cutting material into contact with the positioning surface. In a state where the cutting material is brought into contact with the positioning surface and positioned in the table surface direction, the cutting machine main body is moved downward to cut the cutting blade, whereby accurate cutting processing can be performed.

  Conventionally, various ideas have been made for this positioning fence. For example, as disclosed in the following patent document, there is provided a positioning fence having a two-stage upper and lower structure so that a higher positioning surface can be set. By making it possible to set a high positioning surface, for example, a cutting process can be performed in a state where a crown mold material for housing building material is leaned diagonally between the positioning fence and the table upper surface. On the other hand, according to the positioning fence having the upper and lower two-stage structure, the upper fence on the upper stage side is removed, and only the lower lower fence on the lower stage side can be used. By making the positioning fence low, the left-right inclination angle of the cutting machine body can be set larger.

JP 2010-280013 A

  However, in the conventional positioning fence having the upper and lower two-stage structures, the handling of the upper fence removed from the upper stage has not been considered. For this reason, there is a problem that it takes time to search for the next use, such as losing the removed upper fence.

  It is an object of the present invention to improve the usability of the positioning fence by improving the handleability of the removed upper auxiliary fence in the positioning fence having the upper and lower two-stage structure.

  Said subject is solved by each following invention. A first invention has a table for placing a cutting material, a cutting machine body supported above the table, and a pair of positioning surfaces on the left and right with respect to the cutting blade of the cutting machine body. It is a tabletop cutting machine provided with a positioning fence for positioning in the surface direction. In the first invention, the positioning fence has an upper and lower two-stage structure having a lower base portion and an upper auxiliary fence. In the first invention, the auxiliary fence is located on the upper stage side of the base section, the first position where the positioning surface is positioned flush with the base section, and the second position removed from the upper stage side of the base section. It can be attached to the position.

  According to the first invention, the auxiliary fence removed from the first position can be stored in the second position. Since the removed auxiliary fence is attached to the second position, it can be prevented from being lost, and it is not necessary to take the trouble of searching for the next use. As a result, the usability of the positioning fence can be improved.

  A second invention is a tabletop cutting machine according to the first invention, wherein the second position is set to the left and right sides of the base supporting the table.

  According to the second aspect, since the removed auxiliary fence is stored on the left side or the right side of the base, the auxiliary fence can be stored in a position that is not obstructive to the cutting operation and is easily noticeable.

  A third invention is a tabletop cutting machine according to the second invention, wherein the holder metal fittings are provided on the left and right sides of the base so that the holder metal parts can be pulled out sideways. In 3rd invention, it becomes the structure which can attach an auxiliary fence to the support part with respect to the base of a holder metal fitting.

  According to the third invention, the auxiliary fence can be stored using the dead space.

  A fourth invention is a tabletop cutting machine according to the third invention, wherein the auxiliary fence is configured to be attached by being pressed from above against the support portion of the holder metal fitting.

  According to the fourth aspect of the invention, the user can attach the auxiliary fence so as to cover the support portion of the holder metal from above, and in this respect, the operability of attaching and removing the auxiliary fence during storage is improved. be able to.

  A fifth invention is a tabletop cutting machine according to the first invention, wherein the auxiliary fence is positioned flush with the upper surface of the table when the auxiliary fence is attached to the second position.

  According to 5th invention, the accommodated auxiliary fence can be functioned as an auxiliary table. The auxiliary fence can be provided with a function for positioning the cutting material on the table and an auxiliary table function for placing the cutting material thereon. In this respect, the added value of the auxiliary fence can be increased.

  A sixth invention is a tabletop cutting machine according to the fifth invention, wherein the vertical fence for fixing the cutting material can be attached to the auxiliary fence attached to the second position.

  While being positioned flush with the upper surface of the table and functioning as an auxiliary table, it is also possible to have a function as a vertical vise attachment portion, which is a third function.

It is a whole perspective view of the tabletop cutting machine concerning this embodiment. This figure has shown the state seen from the front diagonal left side. It is the whole side view which looked at the tabletop cutting machine concerning this embodiment from the left side (front side). It is a whole top view of the tabletop cutting machine concerning this embodiment. It is the whole front view which looked at the tabletop cutting machine concerning this embodiment from the front side (user side). It is the whole side view which looked at the tabletop cutting machine concerning this embodiment from the right side (back side). It is the whole rear view which looked at the tabletop cutting machine concerning this embodiment from the back side. It is a top view of a table and a base. It is a bottom view of a table and a base. It is the bottom view which looked at the rotation lock operation part of the table from the lower part. It is the (X)-(X) sectional view taken on the line in FIG. 9, Comprising: It is the longitudinal cross-sectional view mainly of the front part side of a table. In the figure, the first rotation lock mechanism is mainly shown. FIG. 10 is a cross-sectional view taken along line (XI)-(XI) in FIG. 9, and is a vertical cross-sectional view mainly on the front side of the table. In the figure, the second rotation lock mechanism is mainly shown. FIG. 11 is a sectional view taken along the line (XII)-(XII) in FIG. 10, and is a longitudinal sectional view of a rotation lock operation unit. It is a right view of the lower part of the rear part of a table and a main-body support part. FIG. 14 is a sectional view taken along line (XIV)-(XIV) in FIG. 13 and is a longitudinal sectional view of a right-angle positioning mechanism. In this figure, the inclination receiving part is shown by the longitudinal cross section. It is a left view of an inclination positioning mechanism. This figure shows a state where the tilt positioning rod is moved to the rear 45 ° positioning position. It is a left view of an inclination positioning mechanism. This figure shows a state in which the tilt positioning rod has moved to the front 48 ° positioning position. FIG. 16 is a sectional view taken along line (XVII)-(XVII) in FIG. 15, and is a longitudinal sectional view of the tilt positioning mechanism. In this figure, the inclined support part is shown in a longitudinal section. It is a perspective view of an inclination positioning rod alone. It is a longitudinal cross-sectional view of an inclination fixing mechanism. It is a rear view of an inclination fixing mechanism. FIG. 21 is a sectional view taken along the line (XXI)-(XXI) in FIG. 20, and is a longitudinal sectional view of the second pulley and its periphery. It is a top view of a cutting machine main body. This figure has shown the state which rock | fluctuated the cutting machine main body to the lower end. It is the (XXIII)-(XXIII) sectional view taken on the line of FIG. 22, Comprising: It is a longitudinal cross-sectional view of a cutting machine main body. This figure has shown the state which saw the state which rock | fluctuated the cutting machine main body to the lower moving end from the front side. It is the (XXIV)-(XXIV) sectional view arrow view of FIG. 22, Comprising: It is a longitudinal cross-sectional view of a cutting machine main body. This figure has shown the state which saw the state which rock | fluctuated the cutting machine main body to the lower moving end from the front side. It is a cross-sectional view of an electric motor. FIG. 6 is a cross-sectional view taken along line (XXVI)-(XXVI) in FIG. 5, and is a cross-sectional view of a dust collection hose connection portion with respect to a main body side connection port. FIG. 6 is a cross-sectional view taken along line (XXVII)-(XXVII) in FIG. 5, and is a cross-sectional view of the dust collection hose connection portion with respect to the support side connection port of the relay duct. FIG. 6 is a cross-sectional view taken along line (XXVIII)-(XXVIII) in FIG. 5, and is a cross-sectional view of the relay duct. It is the whole top view of a tabletop cutting machine. This figure has shown the state which accommodated the auxiliary fence on the pulled out holder metal fitting. It is the perspective view which looked at the auxiliary fence accommodated on the holder metal fitting from diagonally downward. It is the perspective view which looked at the auxiliary fence from diagonally downward. It is a whole perspective view of a tabletop cutting machine. This figure has shown the state seen from the diagonally left front. This figure has shown the state which attached the vertical vise. It is a figure which shows the modification of embodiment shown in FIGS. This figure has shown the state which hold | maintained the auxiliary fence flush with the base part of the base. It is a whole perspective view of a tabletop cutting machine. This figure has shown the state which supported the vertical vice on the auxiliary fence hold | maintained flush with the base part of the base. It is a whole perspective view of a tabletop cutting machine. This figure has shown the state which rock | fluctuated the cutting machine main body to the lower end position. It is a cross-sectional view of a rocking lock mechanism. This figure shows a locked state. It is a cross-sectional view of a rocking lock mechanism. This figure shows the unlocked state. It is a whole perspective view of a tabletop cutting machine. This figure shows the stowed state where the main body of the cutting machine swung to the lower moving end position is slid to the sliding backward end position.

  Next, an embodiment of the present invention will be described with reference to FIGS. 1-6 has shown the whole tabletop cutting machine 1 which concerns on this embodiment. 1 and 2, the user performs a cutting operation located on the right side of the tabletop cutting machine 1. In the following description, the front and rear, left, right, up, and down directions of the members and structures are used based on the user. The front side when viewed from the user is the front side (user side).

  This table-top cutting machine 1 is a table-type cutting machine also called a slide marnoco. A table 20 for placing a cutting material W, a base 10 for supporting the table 20 so as to be horizontally rotatable, and a circular cutting tool. A cutting machine main body 100 including 102 is provided. Although not visible in FIGS. 1 to 6, the table 20 is supported so as to be horizontally rotatable via a rotation support shaft 21 provided at substantially the center of the upper surface of the base 10. The rotary spindle 21 is visible below the blade plate 22 in FIG. The blade opening plate 22 is a band plate member having a slot for allowing the cutting tool 102 to escape, and is mounted flush with the upper surface of the table 20. The slot hole of the blade opening plate 22 is provided long in the radial direction through the rotation support shaft 21 (the rotation center of the table 20).

  On the upper surface side of the table 20, a blade edge plate 22 and a positioning fence 80 for positioning the cutting material W in the surface direction are provided. At the front part of the table 20, a rotation lock operation part 30 for locking the rotation position is provided. The cutting machine main body 100 is supported at the rear portion of the table 20 via the main body support portion 60. The main body support portion 60 has a function of supporting the cutting machine main body 100 so as to be swingable up and down, tiltable left and right, and slidable back and forth. The cutter 102 is cut into the cutting material W placed on the table 20 by swinging the cutting machine main body 100 downward. In addition, by sliding the cutting machine main body 100 backward while the cutting tool 102 is in the cut state, the cutting process of the cutting material W proceeds rearward, and the wide cutting material W can be cut.

[Rotation lock mechanism of table 20]
The rotation position of the table 20 with respect to the base 10 can be locked at a certain angular position by selecting and using either the first rotation lock mechanism 31 or the second rotation lock mechanism 32. As shown in FIGS. 7 and 8, the operation portions of the first and second rotation lock mechanisms 31 and 32 are arranged in a rotation lock operation portion 30 provided at the front portion of the table 20. Details of the first and second rotation lock mechanisms 31 and 32 are shown in FIG. The first rotation lock mechanism 31 has a function of locking the table 20 at an arbitrary angular position. The first rotation lock mechanism 31 is locked and unlocked by rotating the operation member 33 arranged in the rotation lock operation unit 30. The second rotation lock mechanism 32 is locked and unlocked by swinging up and down an operation member 34 similarly disposed in the rotation lock operation unit 30.

  As shown in FIGS. 10 and 11, the operation member 33 of the first rotation lock mechanism 31 is attached to the end of the screw shaft portion 35. The screw shaft portion 35 is supported across two support wall portions 20 a and 20 b provided at the front portion of the table 20. The screw shaft portion 35 is supported so as to be rotatable around its axis in a state of passing through the two support wall portions 20a and 20b. The screw shaft portion 35 is inserted into a support hole 20d provided in the front support wall portion 20a so that the screw shaft portion 35 can be displaced in the axial direction without rattling in the radial direction. A screw portion 35 a is provided at the rear portion of the screw shaft portion 35. The screw portion 35a is tightened into a screw hole 20c provided in the rear support wall portion 20b. For this reason, when the operation member 33 is rotated, the screw shaft portion 35 advances and retreats in the axial direction (front-rear direction) due to the screw fitting action of the screw portion 35a with respect to the screw hole 20c. When the operation member 33 is rotated to the lock side, the screw portion 35a is tightened with respect to the screw hole 20c, and the screw shaft portion 35 is displaced rearward. Conversely, when the operation member 33 is rotated to the unlock side, the screw portion 35a is loosened with respect to the screw hole 20c, and the screw shaft portion 35 is displaced to the front side.

  A transmission bracket 36 is supported behind the screw shaft portion 35. The transmission bracket 36 is a metal intermediate that is bent in a crank shape in cross section as shown in the figure on a long steel plate on the left and right, and includes an upper contact portion 36a and a lower contact portion 36b. As shown in FIG. 12, the transmission bracket 36 is movably attached across a pair of left and right pedestals 20e provided on the lower surface of the table 20. The transmission bracket 36 is attached with two fixing screws 37. The transmission bracket 36 is provided with a right insertion hole 36c and a left insertion groove hole 36d. The right insertion hole 36c is formed in a circular hole, and the left insertion groove hole 36d is formed in a long slot shape that is long in the front-rear direction. An annular sleeve member 38 made of iron is mounted in the right insertion hole 36c and the left insertion groove hole 36d. Fixing screws 37 are inserted into the inner peripheral sides of the two sleeve members 38, respectively. The transmission bracket 36 is supported so as to be horizontally rotatable around the right sleeve member 38, and the transmission rod 40 is pushed rearward by this rotational operation.

  The rear end of the screw shaft portion 35 is in contact with the front surface of the upper contact portion 36 a of the transmission bracket 36. For this reason, when the operation member 33 is rotated in the locking direction as described above, the screw shaft portion 35 is displaced rearward and the transmission bracket 36 is pushed rearward. The transmission bracket 36 moves rearward while rotating around the sleeve member 38 by the pressing force of the screw shaft portion 35.

  The front end of the transmission rod 40 is in contact with the rear surface of the lower contact portion 36 b of the transmission bracket 36. The transmission rod 40 is supported via a rod receiving portion 41 provided on the lower surface of the table 20 so as to be displaceable in the axial direction (front-rear direction). Further, as shown in FIG. 9, the transmission rod 40 is arranged in parallel to the left side with respect to the screw shaft portion 35. As the transmission bracket 36 rotates rearward, the transmission rod 40 moves rearward.

  As shown in FIG. 10, a lock member 42 is supported behind the transmission rod 40. The lock member 42 is supported on the lower surface of the table 20 via a support shaft 43 so as to be rotatable up and down. The lock member 42 has an L shape having an input portion 42a extending upward from the support shaft 43 and an output portion 42b from which the support shaft 43 extends forward. The rear end portion of the transmission rod 40 is in contact with the front surface of the input portion 42a. For this reason, when the transmission rod 40 moves rearward, the input portion 42a is pushed rearward, and as a result, the lock member 42 is in the direction of displacing the input portion 42a rearward around the support shaft 43, It rotates in the clockwise direction in FIG. Thus, in the present embodiment, the transmission bracket 36 and the transmission rod 40 function as a transmission member for transmitting the screw force generated by the rotation operation of the operation member 33 to the lock member 42.

  When the input part 42a is pushed rearward and the lock member 42 rotates to the lock side, the output part 42b is displaced upward. A locked part provided on the base 10 side is located above the output part 42b. In the present embodiment, the lock plate portion 11 is fixed to the base 10 side to form a locked portion. A sandwiching rib 20 f provided on the lower surface of the table 20 is located above the lock plate portion 11. When the lock member 42 rotates to the lock side, the output portion 42b is displaced upward, and the lock plate portion 11 is sandwiched between the output portion 42b and the sandwiching rib 20f.

  A screw force is generated by the backward movement of the screw shaft portion 35 performed by the rotation operation of the operation member 33. This screw force is transmitted to the lock member 42 via the transmission bracket 36 and the transmission rod 40. When the output portion 42b of the lock member 42 is displaced upward by the backward movement of the screw shaft portion 35, the lock plate portion 11 is sandwiched and the rotation position of the table 20 with respect to the base 10 is locked. Since the lock plate portion 11 is sandwiched and locked between the output portion 42b and the sandwiching rib 20f, the table 20 can be locked at an arbitrary angular position within a certain angular range.

  Thus, according to the first rotation lock mechanism 31, the screw force is indirectly transmitted to the lock member 42 via the transmission bracket 36 and the transmission rod 40 as the transmission members. It is configured to be pressed against the transmission bracket 36 at a portion relatively close to the user. On the other hand, as disclosed in Japanese Patent Laid-Open No. 9-131701, in the configuration in which a long screw shaft portion is pressed against the lock member, the displacement of the screw shaft portion tip relative to the lock member (displacement of the pressing position) is reduced. As a result, there is a problem that the transmission loss is increased and the fixing force of the lock member is not sufficiently exhibited. Since the first rotation lock mechanism 31 exemplified above is configured to press the screw shaft that is shorter by the amount of the transmission member, the transmission loss of the screw force can be reduced as compared with the conventional one, and thereby the lock member 42 A sufficient table locking force can be exhibited.

  Further, according to the first rotation lock mechanism 31, the lock plate portion 11 on the base 10 side is sandwiched between the upper and lower sides to lock the rotation position of the table 20, so that the displacement of the table 20 at the time of locking can be eliminated. it can. In this regard, as disclosed in, for example, JP-A-5-318402, JP-A-9-131701, JP-A-2002-200602, and JP-A-2010-58229, the lock member is conventionally provided on the base side. Therefore, there is a problem that the cutting accuracy is impaired due to a slight lift of the table due to the reaction caused by the pressing of the lock member. In the first rotation lock mechanism 31 exemplified above, the lock plate portion 11 on the base 10 side is sandwiched and locked by the output portion 42b of the lock member 42 and the sandwiching rib 20f of the table 20 so that it is pressed. As a result of the reaction being canceled up and down, there is no positional deviation such as lifting of the table 20 with respect to the base 10, thereby ensuring high cutting accuracy.

  The tabletop cutting machine 1 according to the present embodiment includes a second rotation lock mechanism 32 in addition to the first rotation lock mechanism 31. The second rotation lock mechanism 32 can lock the table 20 at a plurality of preset angular positions within a certain angle range (positive lock). The operation member 34 of the second rotation lock mechanism 32 is also disposed in the rotation lock operation unit 30. On the left side of the rotation lock operation unit 30, an operation knob 39 for holding a push-down position (unlock position) of the operation member 34 is provided. As shown in FIGS. 10 and 11, the operation member 34 is supported by the rotation lock operation unit 30 so as to be swingable up and down via a swinging shaft part 34 c integrally provided on the rear side. An operation unit 34 a that is pushed down by the user is provided at the front of the operation member 34.

  A protrusion is linked to the operating member 34 via an engagement shaft 46 on the front side of the swinging shaft portion 34c. In the present embodiment, a lock pin 47 is used as the protrusion. The engagement shaft 46 is a pin having a diameter sufficiently smaller than that of the lock pin 47, and is inserted in the radial direction through the central axis of the lock pin 47 so as to protrude in both the left and right directions. The engagement shaft 46 is in contact with the slope portion 34b of the operation member 34 from below. The lock pin 47 is supported so as to be displaceable back and forth via the support wall portion 20a and the rod receiving portion 41. The lock pin 47 is disposed in parallel with the screw shaft portion 35 of the first rotation lock mechanism 31. Further, the lock pin 47 is disposed coaxially with the screw shaft portion 35 when viewed in plan as shown in FIG. For this reason, the lock pin 47 is disposed parallel to the transmission rod 40 of the first rotation lock mechanism 31 so as to be shifted in the left-right direction.

  The operation member 34 urges the lock pin 47 rearward by a compression spring 48 interposed between the engagement shaft 46 and the support wall portion 20a, and the engagement shaft 46 presses the slope portion 34b from below. It is biased in the direction of swinging upward (lock side). By pushing down the operating portion 34a against the compression spring 48, the operating member 34 can be swung downward (unlocked). When the operation member 34 is swung up and down, the lock pin 47 moves back and forth. A plurality of lock recesses 12 are provided behind the lock pin 47 and in a certain angular range of the front portion of the base 10. The plurality of lock recesses 12 are provided for each preset angle.

  As shown in FIG. 11, in a state where the operation member 34 is positioned on the upper lock position side by the biasing force of the compression spring 48, the lock pin 47 is displaced rearward. When the lock pin 47 is displaced rearward and enters one of the lock recesses 12, the rotational position of the table 20 is locked. The lock position of the lock pin 47 is held by the urging force of the compression spring 48. When the operation portion 34a of the operation member 34 is pushed downward (unlocked) against the urging force of the compression spring 48, the lock pin 47 is moved forward by the engagement shaft 46 being pushed downward by the slope portion 34b. Displace. When the lock pin 47 is displaced forward, the rear portion is extracted from the lock recess 12. When the lock pin 47 is displaced forward and extracted from the lock recess 12, the second rotation lock mechanism 32 is unlocked and the table 20 can be rotated.

  The push-down operation (unlock operation) of the operation member 34 can be locked by operating the operation knob 39 provided on the left side. By locking the operation member 34 in the depressed state, the lock pin 47 can be maintained in a state of being detached from the lock recess 12. When the table 20 is positioned at an arbitrary angular position by the first rotation lock mechanism 31 described above, the lock pin 47 is detached from the lock recess 12. Therefore, when the rotation position of the table 20 is positioned by the first rotation lock mechanism 31, the operation knob 39 is operated to lock the operation member 34 of the second rotation lock mechanism 32 at the unlock position. Thus, the positioning operation by the first rotation lock mechanism 31 can be performed quickly and reliably. When positioning by the first rotation lock mechanism 31 is not performed, the lock operation of the operation knob 39 is released and the lock state of the push-down operation of the operation member 34 is released. As a result, the operating member 34 is returned to the upper locked position by the urging force of the compression spring 48. When the operation member 34 is returned to the upper lock position, the lock pin 47 is retracted and the rear end portion is inserted into the lock recess 12, whereby the table 20 is positioned at a predetermined constant angular position.

  As shown in FIG. 7, an angle scale 13 for displaying the rotational position of the table 20 is attached to the front portion of the base 10. At the symmetrical positions of the left side and the right side of the table 20, pointer parts 23 are provided, respectively. The angular position of the table 20 can be confirmed by reading the scale of the angle scale 13 indicated by the pointer portion 23. FIG. 7 shows a state in which the table 20 is locked at an angular position of 0 °. In the present embodiment, the rotational position of the table 20 can be changed to the left and right within an angle range of about 60 °. According to the first rotation lock mechanism 31, the table 20 can be locked at an arbitrary angular position in an angle range of about 60 ° to the left and right. According to the second rotation lock mechanism 32, the angular position of the table 20 can be repeatedly and accurately locked at intervals of, for example, 10 ° within an angular range of about 60 ° to the left and right. The angular position that cannot be locked by the second rotation lock mechanism 32 can be locked by the first rotation lock mechanism 31.

[Inclination positioning mechanism 62 of cutting machine body 100]
The cutting machine main body 100 is supported on the rear portion of the table 20 via the main body support portion 60. The cutting machine body 100 is supported so as to be swingable up and down with respect to the upper surface of the table 20 and slidable back and forth, and also tiltable in the left-right direction. The main body support portion 60 includes a main body support arm 61 extending upward from the rear portion of the table 20. A right angle positioning mechanism 90 and a tilt positioning mechanism 62 are formed between the lower portion of the main body support arm 61 and the rear portion of the table 20.

  A cylindrical inclined receiving portion 63 is integrally provided at the rear portion of the table 20. An inclined support portion 64 having a cylindrical mating surface is integrally provided on the lower front surface of the main body support arm 61. As shown in FIG. 17, the tilt support portion 64 is rotatably coupled to the tilt receiving portion 63 via one left and right tilt shaft 65. The left and right inclined shafts 65 are shown in FIGS. The main body support arm 61 and the cutting machine main body 100 are supported so as to be tiltable left and right about the axis of the left and right tilt shaft 65. The axis of the left / right inclined shaft 65 coincides with the upper surface of the table 20 in the vertical direction.

  Details of the right angle positioning mechanism 90 are shown in FIGS. The right-angle positioning mechanism 90 includes a right-angle positioning bolt 91, a right-angle positioning release button 68, and a right-angle positioning portion 69. The right angle positioning bolt 91 is fastened to the upper part of the inclined receiving part 63. A right angle positioning portion 69 is disposed in front of the right angle positioning bolt 91 in the tightening direction. The right angle positioning portion 69 is supported on the inclined support portion 64 side. The right-angle positioning part 69 is supported via a support shaft 92 so as to be tiltable up and down. The right angle positioning portion 69 is urged by a torsion spring 92 in a direction (a counterclockwise direction in FIG. 14) that displaces the contact portion 69a provided at the tilting tip portion upward.

  As shown in FIG. 17, an engaging portion 69 b is provided on the left side of the right angle positioning portion 69. A right-angle positioning release button 68 is disposed on the left side of the engaging portion 69b. The right-angle positioning release button 68 is provided on the left side of the inclined support portion 64. The right angle positioning release button 68 can be moved back and forth. The right-angle positioning release button 68 is urged by the compression spring 94 to the left-side right-angle positioning position (position indicated by a solid line in FIG. 17). In a state where the right-angle positioning release button 68 is positioned at the right-angle positioning position on the left side by the biasing force of the compression spring 68, the right-angle positioning portion 69 is positioned at the right-angle positioning position indicated by the solid line in FIG. To do. The main body support arm 61 and then the cutting machine main body 100 is tilted from the left side to the right side (clockwise direction in FIG. 14), and the contact portion 69a of the right angle positioning portion 69 located at the right angle positioning position is brought into contact with the right angle positioning bolt 91. As a result, the main body support arm 61 and thus the cutting machine main body 100 are positioned at the right angle cutting position.

  When the right-angle positioning release button 68 is pushed to the right release position (position indicated by a two-dot chain line in FIG. 17) against the compression spring 94, the tip of the push button abuts on the engagement portion 69b and is pushed to the right. It is. When the engaging portion 69b is pushed rightward, the right-angle positioning portion 69 moves to the release position indicated by the two-dot chain line in FIG. In the state where the right-angle positioning release button 68 is kept pressed and the right-angle positioning portion 69 is positioned at the release position, the right-angle positioning bolt 91 does not contact the contact portion 69a. Can be tilted to the right after passing through the right angle cut position. When the cutting machine main body 100 is tilted to the left from the right-angle cutting position, the contact portion 69a of the right-angle positioning portion 69 is displaced in the direction away from the right-angle positioning bolt 91 to the left, so that the right-angle positioning mechanism 90 is released. No operation is necessary.

  Details of the tilt positioning mechanism 62 are shown in FIGS. As shown in FIG. 17, inclined stopper bolts 66 and 67 are provided on the left and right sides of the inclined support portion 64. Both inclined stopper bolts 66 and 67 are tightened with their tip portions obliquely downward. On the other hand, an inclined positioning rod 70 is provided below the inclined receiving portion 63. As shown in FIGS. 15 and 16, the tilt positioning rod 70 is supported at the rear portion of the table 20 so as to be movable in the front-rear direction (axial direction). The tilt positioning rod 70 is biased by the compression spring 71 in the direction of moving to the rear 45 ° positioning position. The rear portion of the tilt positioning rod 70 is located obliquely downward (front in the axial direction) to which the left and right tilt stopper bolts 66 and 67 are directed.

  An operation bracket 72 is attached to the front portion of the tilt positioning rod 70. FIG. 18 shows the tilt positioning rod 70 and the operation bracket 72 in the state of parts. A pair of left and right operation knobs 72a are integrally provided on the upper portion of the operation bracket 72 as a switching operation member for switching the tilt angle. As shown in FIG. 7, the left and right operation knobs 72 a protrude upward from the upper surface of the table 20 through insertion windows 20 g provided at the rear of the table 20. The left and right insertion window portions 20 g are each formed in a rectangular shape through which the operation knob 72 a can be inserted, and are arranged at symmetrical positions with respect to the center line of the table 20. The front-rear width of the left and right insertion window portions 20g is set to a front-rear width that allows the operation knob 72a to be moved between a front 48 ° positioning position and a rear 45 ° positioning position. The user of the tabletop cutting machine 1 can move the tilt positioning rod 70 back and forth by picking the left or right operation knob 72a and moving it back and forth.

  The initial position of the operation knob 72a is the position displaced rearward by the urging force of the compression spring 71. Therefore, the tilt positioning rod 70 is held at the rear 45 ° positioning position by the urging force of the compression spring 71. 7 shows the initial position of the operation knob 72a, and FIG. 15 shows the 45 ° positioning position of the tilt positioning rod 70. The operation for moving the tilt positioning rod 70 to the 48 ° positioning position and moving the operation knob 72 a forward is performed against the compression spring 71.

  As shown in FIGS. 15 and 16, the rear portion of the inclined positioning rod 70 is provided with a contact portion 70 a that is two flat surfaces parallel to each other. By moving the tilt positioning rod 70 back and forth, the contact portion 70a is displaced back and forth. FIG. 15 shows a state in which the tilt positioning rod 70 is positioned at the 45 ° rearward positioning position by the biasing force of the compression spring 71. In this state, the abutment portion 70a is in a state where the left and right inclined stopper bolts 66, 67 are detached from the front in the axial direction. Therefore, when the main body support arm 61 is tilted left and right by tilting the cutting machine main body 100 leftward or rightward from the right-angle cutting position, the left and right tilt stopper bolts 66 and 67 are placed on the outer peripheral surface of the tilt positioning rod 70. Abut. When the left or right inclined stopper bolts 66 and 67 are brought into contact with the outer peripheral surface of the inclined positioning rod 70, the cutting machine main body 100 is positioned at a position inclined 45 ° to the left or right.

  As shown in FIG. 16, by moving the left or right operation knob 72a to the front side (front side) with the fingertip, the front positioning position of the inclined positioning rod 70 against the biasing force of the compression spring 71 is 48 °. Can be moved to. When the tilt positioning rod 70 is moved to the 48 ° positioning position on the front side, the contact portion 70a is positioned in front of the left and right tilt stopper bolts 66 and 67 in the axial direction. Therefore, when the main body support arm 61 is tilted left and right by tilting the cutting machine main body 100 leftward or rightward from the right-angle cutting position, the left and right tilt stopper bolts 66 and 67 are contact portions of the tilt positioning rod 70. 70a abuts. When the left or right tilt stopper bolts 66 and 67 are brought into contact with the contact portion 70a of the tilt positioning rod 70, the cutting machine main body 100 is positioned at a position inclined 48 ° to the left or right.

  As shown in FIG. 17, when the cutting machine main body 100 is tilted to the left, the left tilt stopper bolt 66 is abutted against the tilt positioning rod 70 and positioned at 45 ° or 48 °. When the cutting machine body 100 is tilted to the right, the right tilt stopper bolt 67 is brought into contact with the tilt positioning rod 70 and positioned at 45 ° or 48 °. In this way, the tilt positioning rod 70 for positioning the left and right tilt position of the cutting machine main body 100 at a position tilted at 45 ° or 48 ° is from the rear edge of the virtual circle passing through the outer periphery or the outer periphery of the table 20. Further, by operating an operation knob 72a disposed on the front side and on the user side (front side) with respect to the tilt positioning mechanism 62, it can be switched to the 45 ° positioning position or the 48 ° positioning position. Conventionally, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2011-41999 and Japanese Patent Application Laid-Open No. 2014-138916, this type of switching lever has been arranged on the rear surface side or side surface of the main body support arm 61. Compared to such a conventional configuration, the operation knob 72a according to the present embodiment is disposed in a portion closer to the user (the upper rear portion of the table 20), so that the user can operate the operation knob 72a in a more comfortable posture. In this respect, the operability of the tabletop cutting machine 1 can be improved. Since the operation knob 72a is arranged on the left and right, the user can easily move the operation knob 72a with either the left hand or the right hand. Further, when it is tilted to the left, a large space is formed near the right operation knob 72a. On the other hand, when it is tilted to the right, a large space is formed near the left operation knob 72a. For this reason, the operation of the operation knob 72a is not hindered even when the inclination is left or right.

[Inclination fixing mechanism 50 of cutting machine body 100]
The right-angle cutting position and the left-right inclination position of the cutting machine body 100 are positioned by the right-angle positioning part 69 or the inclination positioning rod 70 and then fixed by an inclination fixing mechanism 50 described below. Details of the tilt fixing mechanism 50 are shown in FIGS. The left and right inclined shafts 65 are integrally provided so as to protrude rearward from the inclined receiving portion 63. The left and right inclined shaft 65 protrudes rearward from the rear surface of the inclined support portion 64 through the insertion hole 64a. A screw shaft portion 65 a is provided at the rear portion of the left and right inclined shaft 65. The first pulley 51 is coupled to the screw shaft portion 65a. When the first pulley 51 is rotated with respect to the screw shaft portion 65a, the first pulley 51 is displaced in the axial direction (front-rear direction). The first pulley 51 is pressed against the stepped portion 64 b of the inclined support portion 64 through the thrust bearing 52 and the flange 53 by being tightened with respect to the screw shaft portion 65 a. When the first pulley 51 is fastened to the screw shaft portion 65a and pressed by the stepped portion 64b, the inclined support portion 64 is fixed to the inclined receiving portion 63 and the left and right inclined position of the main body support arm 61 is fixed. The When the tightening of the first pulley 51 with respect to the screw shaft portion 65a is loosened, the inclined support portion 64 can rotate with respect to the inclined receiving portion 63, and the main body support arm 61 can be inclined left and right.

  As shown in FIG. 20, the second pulley 54 is rotatably supported on the upper portion of the main body support arm 61. A transmission belt 55 is stretched between the first pulley 51 and the second pulley 54. As the first pulley 51 and the second pulley 54, toothed pulleys are used. For this reason, a toothed belt is used as the transmission belt 55. The first and second pulleys 51 and 54 and the transmission belt 55 mesh with each other, so that power is reliably transmitted without causing slippage. An idler 56 is rotatably supported in the middle of the transmission path of the main body support arm 61. The idler 56 provides an appropriate tension for the transmission belt 55. When the transmission belt 55 is properly tensioned by the idler 56, tooth skipping of the first and second pulleys 51 and 54 with respect to the transmission belt 55 is prevented, and reliable power transmission can be performed in this respect as well. ing.

  A resin arm cover 57 is attached to the rear surface side of the main body support arm 61. The arm cover 57 is attached so as to cover almost the entire rear surface of the main body support arm 61. The arm cover 57 covers the power transmission path by the first and second pulleys 51, 54 and the transmission belt 55, thereby preventing interference or biting of these members 51, 54, 55 with other articles. And protected from dust.

  As shown in FIG. 20, a belt pressing portion 57 a is provided on the upper side of the main body support arm 61 and on the right side of the second pulley 54. In the case of the present embodiment, the belt pressing portion 57 a is provided integrally with the arm cover 57. The belt pressing portion 57 a is provided in a state of projecting inward from the wall portion of the arm cover 57. As shown in the figure, the belt pressing portion 57 a is pressed against the back surface (the surface opposite to the tooth surface) of the transmission belt 55. The belt pressing portion 57a is disposed on the front side in the tightening rotation direction of the second pulley 54 (counterclockwise direction in FIG. 20, clockwise direction as viewed from the user). In FIG. 20, the tightening rotation direction of the first pulley 51 with respect to the screw shaft portion 65 a of the left and right inclined shaft 65 is indicated by a white arrow. By rotating the second pulley 54 in the same direction as the white arrow, the left and right inclined position of the main body support arm 61 is fixed with respect to the inclined receiving portion 63, and thus the left and right inclined position of the cutting machine main body 100 is fixed. Therefore, sagging of the transmission belt 55 tends to occur on the front side in the tightening rotation direction of the second pulley 54 (the left side of the second pulley 54 in FIG. 20). This slack is avoided by the belt pressing portion 57a. By avoiding the occurrence of slack in the transmission belt 55, tooth skipping of the transmission belt 55 with respect to the second pulley 54 is prevented, and reliable power transmission is performed.

  According to the belt pressing portion 57a, it is possible to prevent the transmission belt 55 from sagging even in a narrow portion where the idler cannot be disposed. By providing a plurality of belt pressing portions 57a, sagging of the transmission belt 55 can be avoided more reliably. The belt pressing portion 57a can also be provided on the main body support arm 61 side.

  As shown in FIGS. 20 and 21, the second pulley 54 is provided with a flange portion 54 a. A plurality of engaging recesses 54b are provided on the rear surface of the flange portion 54a. The plurality of engaging recesses 54 b are arranged at equal intervals along a concentric circle centered on the rotation center of the second pulley 54. On the other hand, on the upper part of the arm cover 57, one engagement pin 58 is provided in a state of being urged in the protruding direction by a compression spring 59. The engagement pin 58 urged in the protruding direction by the compression spring 59 is pressed against the engagement recess 54 b of the second pulley 54. When the engagement pin 58 is elastically pressed against the engagement recess 54 b by the compression spring 59, the second pulley 54 has a click feeling in the rotation direction.

  As shown in FIG. 2, two slide bars 75 and 76 are supported on the upper portion of the main body support arm 61. The two slide bars 75 and 76 are fixed so as to extend forward from the upper front surface of the main body support arm 61, and the leading end side reaches the upper center of the table 20. The two slide bars 75 and 76 are supported in parallel with each other at a predetermined interval in the vertical direction. The front end portions of the two slide bars 75 and 76 are coupled to each other by a coupling member 78 at a constant interval. A main body slider 77 is supported through two upper and lower slide bars 75 and 76 so as to be slidable in the front-rear direction. The main body slider 77 supports the cutting machine main body 100. The cutting machine main body 100 is supported so as to be slidable back and forth via a main body slider 77 and two upper and lower slide bars 75 and 76.

  As shown in FIG. 2, steel pipes (pipe materials) are used for the upper and lower slide bars 75 and 76. A transmission rod 79 is inserted through the inner peripheral side of the upper slide bar 75. The transmission rod 79 is supported so as to be rotatable about its axis via a rear bearing 79a and a front bearing 79b. The rear bearing 79 a is held by the main body support arm 61. The front-side bearing 79 b is held by the coupling member 78. A second pulley 54 is coupled to the rear portion of the transmission rod 79. The second pulley 54 rotates integrally with the transmission rod 79.

  An operation knob 73 is coupled to the front portion of the transmission rod 79. By rotating the operation knob 73 clockwise, the second pulley 54 can be rotated in the tightening direction (the tightening direction of the first pulley 51 with respect to the screw shaft portion 65a) via the transmission rod 79. The user can rotate the second pulley 54 while directly receiving a click feeling at a certain angle with respect to the rotation operation of the operation knob 73 by the click mechanism arranged in parallel with the second pulley 54. The rotation of the second pulley 54 is transmitted to the first pulley 51 via the transmission belt 55. By rotating the operation knob 73, the first pulley 51 can be rotated to change and fix the left and right inclined positions of the main body support arm 61 and thus the cutting machine main body 100.

  According to the tilt fixing mechanism 50 described above, the tilt fixing mechanism 50 can be remotely operated by rotating the operation knob 73. Since the operation knob 73 is located substantially above the center of the table 20, the user can easily rotate the operation knob 73 without greatly reaching out and taking a cramped posture. Further, the second pulley 54 has a click feeling with respect to rotation by an engagement pin 58 (click mechanism) biased by a compression spring 59. For this reason, the user can rotate the operation knob 73 while receiving a click feeling. In this respect, for example, the operation of the tilt fixing mechanism 50 is compared with the conventional configuration disclosed in JP-A-2015-150633. Sexuality is enhanced. Further, the belt pressing portion 61a avoids the slack of the transmission belt 55 on the front side in the tightening rotation direction of the second pulley 54, and the tooth skip of the transmission belt 55 with respect to the second pulley 54 is avoided.

[Cutting machine body 100]
The cutting machine main body 100 is supported so as to be slidable back and forth via two slide bars 75 and 76 of the main body support portion 60. Details of the cutting machine main body 100 are shown in FIGS. The cutting machine body 100 includes a circular cutting tool 102 that rotates using an AC power supply type electric motor 101 as a drive source. The range of the upper half circumference of the blade 102 is covered with a fixed cover 103. The lower half circumference of the cutting tool 102 is covered with a movable cover 104. As shown in FIG. 23, the movable cover 104 is supported on the left side surface of the fixed cover 103 via a bearing (ball bearing) 109 attached to the outer peripheral side of the boss 104a so as to be rotatable (can be opened and closed up and down). The movable cover 104 is opened and closed in conjunction with the vertical movement of the cutting machine body 100. When the movable cover 104 is opened, the lower part of the blade 102 is exposed. This exposed portion is cut into the cutting material W. The movable cover 104 is fully closed when the cutting machine body 100 is located at the top dead center (the state shown in FIGS. 1 to 5). The movable cover 104 is gradually opened when the cutting machine body 100 is moved downward from the top dead center. The movable cover 104 is fully opened when the cutting machine main body 100 is moved down to the bottom dead center (the state shown in FIG. 22).

  As shown in FIG. 5, a base 107 is integrally provided at the rear of the fixed cover 103. The base part 107 extends rearward. On the other hand, a bifurcated main body support 77 a is provided on the right side of the main body slider 77. The rear portion of the base portion 107 is inserted into the main body support portion 77 a and coupled in a vertically swingable manner via the vertical swing support shaft 105, so that the cutting machine main body 100 is attached to the main body slider 77. It is supported so that it can swing up and down. The cutting machine main body 100 can be swung up and down around a vertically swinging support shaft 105. The cutting machine main body 100 is urged in a direction to be returned to the upper standby position by a torsion spring 106 (a part of which is visible in FIG. 4) mounted around the vertical swing support shaft 105.

  As shown in FIGS. 23 and 25, the electric motor 101 has a configuration in which a stator 111 and a rotor 112 are housed in a cylindrical motor housing 110. A stator 111 is fixed to the inner peripheral side of the motor housing 110. A rotor 112 is rotatably supported on the inner peripheral side of the stator 111. The rotor 112 is coupled to the motor shaft 113. The motor shaft 113 is rotatably supported via bearings 114 and 115 around the motor axis J direction. A cooling fan 116 is attached to the motor shaft 113 on the front side (lower left) of the rotor 112 in the motor axis direction. A commutator 112a is provided at the rear (upper right) of the rotor 112 in the motor axis J direction. Two carbon brushes 117 are in sliding contact with the commutator 112a from opposite sides.

  As shown in FIG. 22, a plurality of air inlets 110 a are provided on the rear surface of the motor housing 110 in the motor axis J direction. In a state where the electric motor 101 is activated and the cooling fan 116 is rotated, outside air is introduced into the motor housing 110 through the intake port 110a. Outside air (cooling air) introduced from the intake port 110a flows forward in the direction of the motor axis J, and the stator 111, the rotor 112, and the like are cooled.

  The electric motor 101 is attached in a posture inclined in a direction in which the rear side of the motor axis J direction is displaced upward. As shown in FIG. 23, with the cutting machine main body 100 positioned at a right-angle cutting position where the cutting tool 102 is orthogonal to the upper surface of the table 20, the electric motor 101 moves its motor axis J with respect to the upper surface of the table 20. Are arranged in an inclined posture rather than in parallel. By arranging the electric motor 101 to be inclined, an allowable inclination angle to the right side of the cutting machine body 100 can be set larger.

  The electric motor 101 is coupled to the back side (right side) of the fixed cover 103 via the gear head portion 120. The gear head portion 120 has a configuration in which a two-stage reduction gear train is housed in a gear housing 121. The gear housing 121 is integrally provided on the back side of the fixed cover 103. An output gear portion 113 a is provided at the tip of the motor shaft 113 of the electric motor 101. The output gear portion 113 a is meshed with the first driven gear 122. The first driven gear 122 is fixed on the first driven shaft 123. A second driven gear 124 is fixed on the first driven shaft 123 on the left side of the first driven gear 122. The first driven shaft 123 is rotatably supported by the gear housing 121 via bearings 123a and 123b.

  The second driven gear 124 is meshed with the third driven gear 125. The third driven gear 125 is fixed on the second driven shaft 126. The second driven shaft 126 is rotatably supported by the gear housing 121 via bearings 126a and 126b. The second driven shaft 126 is arranged in parallel with the first driven shaft 123. The third driven gear 125 is meshed with the fourth driven gear 127. The fourth driven gear 127 is fixed on the spindle 130. The spindle 130 is rotatably supported by the lower part of the gear housing 121 via bearings 130a and 130b. The spindle 130 is disposed in parallel with the first and second driven shafts 123 and 126. As shown in FIG. 5, the second driven shaft 126 is arranged to be shifted to the front side (user side) with respect to the line connecting the first driven shaft 123 and the spindle 130. Thereby, downsizing of the gear head portion 120 in the vertical direction is achieved while ensuring a necessary reduction ratio (gear diameter).

  The spindle 130 protrudes into the fixed cover 103. A cutting tool 102 is attached to the protruding portion. The cutting tool 102 is attached by tightening the cutting tool fixing screw 134 with its center sandwiched between the outer flange 131 and the inner flange 132.

  A controller housing 140 is provided on the upper surface of the electric motor 101. The controller housing part 140 houses a controller 141 for mainly controlling the operation of the electric motor 101. The controller 141 performs control such as constant rotation control and soft start. A part of the outside air (motor cooling air) that flows into the motor housing 110 due to the rotation of the cooling fan 116 flows into the controller housing 140. The controller 141 is cooled by a part of the motor cooling air that has flowed into the controller housing 140. As shown in FIGS. 5, 6, 22, and 23, an exhaust port 145 for exhausting motor cooling air is provided on the rear side of the gear head unit 120.

  A handle portion 150 that is gripped by the user is provided on the side portion on the near side as viewed from the user of the electric motor 101. The handle portion 150 is disposed substantially parallel to the rotation axis of the cutting tool 102 (the axis of the spindle 130) and is a side grip type handle portion. The left and right sides of the handle portion 150 are coupled to the front side portion of the electric motor 101 via leg portions 151 and 151. A switch lever 152 is disposed on the rear surface of the handle portion 150. By grasping the handle portion 150 and pulling the switch lever 152 to the front side by hand, the electric motor 101 is activated and the blade 102 is rotated. A lock-off switch 153 is provided on the front surface of the handle portion 150. With the lock-off switch 153 pushed in, the switch lever 152 can be pulled (turned on).

  As shown in FIG. 5, a carrying handle 154 for carrying is provided at the rear portion of the fixed cover 103. The carrying handle 154 extends from the upper rear surface of the fixed cover 103 to the rear portion of the base portion 107. The carrying handle 154 is provided so as to extend in a substantially horizontal direction in a state where the cutting machine main body 100 is locked near the bottom dead center by a swing lock mechanism 210 described later. When the cutting machine body 100 is locked near the bottom dead center and the desktop cutting machine 1 is carried, the carrying handle 154 is gripped, so that the desk cutting machine 1 is kept in a balanced posture without tilting back and forth and left and right. It can be easily carried.

[Dust collection hose]
As shown in FIGS. 1 and 2, an arrow 103 a indicating the rotation direction of the cutting tool 102 is displayed on the left side (front side) of the fixed cover 103. The blade 102 rotates in the clockwise direction when viewed from the left side. For this reason, the cutting powder generated by the cutting process is blown up from the upper surface of the cutting material W on the rear side of the fixed cover 103. A dust guide 160 for receiving the blown-up cutting powder is attached to the rear lower surface of the base portion 107. Further, a main body side connection port 161 for connecting a dust collecting hose is provided on the rear surface of the carrying handle 154 and on the upper surface of the rear portion of the base portion 107. The main body side connection port 161 communicates with the dust guide 160 through the inside of the base portion 107. The dust received by the dust guide 160 is blown up into the main body side connection port 161 through the inside of the base portion 107. A dust collection hose 162 is connected to the main body side connection port 161. A connection structure of the dust collection hose 162 to the main body side connection port 161 is shown in FIG.

  The dust collection hose 162 is an accordion-shaped flexible hose having appropriate stretchability and flexibility, and is connected to a relay duct 170 as a hose intermediate connection portion provided on the right side of the main body support portion 60. As shown in FIG. 5, the dust collection hose 162 is connected between the main body side connection port 161 and the relay duct 170 through a routing path that is largely curved upward, for example. The length of the dust collection hose 162 between the main body side connection port 161 and the relay duct 170 (the total length of the dust collection hose 162 in this embodiment) is the total swing range of the cutting machine main body 100 in the vertical direction and the front-rear direction. The length is set to allow movement in the entire slide range. A connection structure of the dust collection hose 162 to the main body side connection port 161 is shown in FIG. 26, and a connection structure to the relay duct 170 is shown in FIG. As shown in FIG. 26, a cylindrical connection member 163 is attached to the upstream end of the dust collection hose 162. The upstream end of the dust collection hose 162 is connected to the inner peripheral side of the connection member 163. A groove 163 a having a constant width is provided on the outer peripheral surface of the connecting member 163 over the entire circumference.

  On the inner peripheral side of the main body side connection port 161, the holding member 164 to which the holding member 164 is attached is a resin-made intervening part having an annular shape and has elasticity in the diameter increasing direction. Engaging protrusions 164 a are integrally provided at the circumferentially bisected position on the outer peripheral surface of the holding member 164. The two engaging convex portions 164a are fitted in engaging holes 161a provided at the circumferentially bisected position of the main body side connection port 161, respectively. The two engaging convex portions 164a are fitted into the engaging holes 161a, respectively, so that the holding member 164 is held along the inner peripheral surface of the main body side connection port 161 in a state where the holding member 164 is not displaced around the axis H and in the axis H direction. Has been.

  Since the annular holding member 164 held along the inner peripheral surface of the main body side connection port 161 is fitted in the groove portion 163a of the connection member 163 as shown in the drawing, the dust collecting hose 162 is rotated about its axis H. It is connected to the main body side connection port 161 in a freely rotatable state. The connecting member 163 can be extracted from the inner peripheral side of the main body side connection port 161 by pushing the two engaging convex portions 164a into the inner part of the engaging hole 161a and elastically deforming the holding member 164 in the direction of diameter reduction. Thus, the dust collection hose 162 can be easily detached from the main body side connection port 161.

  As shown in FIG. 27, a similar connecting member 165 is also attached to the downstream end of the dust collecting hose 162. The downstream end of the dust collection hose 162 is connected to the support side connection port 171 of the relay duct 170 via the connection member 165. A groove 165a is also provided on the outer peripheral surface of the connecting member 165 over the entire circumference. An annular holding member 172 is also held on the inner peripheral side of the support side connection port 171. Engaging convex portions 172 a are integrally formed at the outer peripheral surface bisected position of the holding member 172. The two engaging projections 172a are respectively fitted into engaging holes 171a provided at the bisecting position in the circumferential direction of the support side connection port 171, and the holding member 172 is positioned around the axis H and in the axis H direction. It is held along the inner peripheral surface of the support side connection port 171 without being displaced. For this reason, the dust collection hose 162 is connected to the downstream side as well as the upstream side so that it can rotate smoothly even with a small external force around its axis H with respect to the support side connection port 171.

  As shown in FIG. 28, the relay duct 170 includes a base portion 173 provided integrally with the main body support arm 61 of the main body support portion 60. A large dust collection duct 174 is attached to the front portion of the base portion 173. The dust collection duct 174 is directed to the rear of the positioning fence 80. The cutting powder blown up behind the positioning fence 80 is collected by the dust collection duct 174. A discharge nozzle 176 is connected to the right side of the base portion 173 via a joint 175. As shown in FIG. 5, the support-side connection port 171 described above is provided in the upper part of the base part 173 so as to be inclined slightly rearward.

  As shown in FIG. 28, the dust collection duct 174 and the support side connection port 171 communicate with the discharge nozzle 176 through the internal passage 173 a of the base portion 173. The discharge nozzle 176 is supported via a joint 175 so as to be rotatable up and down (can be swung). A separate dust collector hose is connected to the discharge nozzle 176.

  The upstream side (front side) of the dust collecting hose 162 is connected to the main body side connection port 161 so as to be rotatable about its axis H, and the downstream side (rear side) is connected to the support side connection port 171 about its axis H. It is connected in a freely rotatable state. According to such a connection structure, for example, when the cutting machine main body 100 is swung in the vertical direction and the routing route is changed by the sliding operation in the front-rear direction, the upper and lower ends rotate around the axis H. In this way, since there is no excessive bending or twisting (narrowing the cross-sectional area) in the middle of the path of the dust collection hose 162, a smoothly curved routing path is maintained. This ensures that high dust collection efficiency can be maintained.

  In this regard, for example, as disclosed in JP-A-6-210605, when the end of the dust collecting hose is connected to the connection port in a state of being fixed around its axis, the routing route has changed. In this case, excessive bending or twisting occurs in the middle of the routing path, and a dust collecting passage having a sufficient cross-sectional area cannot be secured. According to the connection structure (rotation connection structure) of the dust collection hose 162 exemplified above, such a problem is solved. For example, when the tabletop cutting machine 1 is installed and stored with the wall surface of the building in the back, even if the dust collecting hose 162 interferes with the wall surface, both ends rotate around the axis H and are handled. The path is smoothly followed along the wall surface, whereby deformation or damage of the dust collecting hose 162 can be avoided and its durability can be enhanced.

  Instead of the holding members 164 and 172, a roller bearing such as a ball bearing or a needle bearing may be interposed to connect the upstream end and the downstream end of the dust collecting hose 162 so as to be rotatable about the axis H thereof. Good.

[Storage structure of auxiliary fence 82]
As shown in FIGS. 1 to 5, a positioning fence 80 for positioning the cutting material W in the surface direction is provided on the upper surface side of the table 20. The front surface of the positioning fence 80 (positioning surface 80a) coincides with the rotation center of the table 20 (the axis of the rotation support shaft 21). The cutting material W is positioned with respect to the upper surface (table surface direction) of the table 20 by bringing the rear surface of the cutting material W into contact with the positioning surface 80a of the positioning fence 80 and aligning it to the left and right.

  The positioning fence 80 has an upper and lower two-stage structure having a pair of left and right base parts 81 and a pair of left and right auxiliary fences 82 with respect to the cutting tool 102. The pair of left and right base parts 81 are integrally coupled to the left and right via a semicircular coupling part 83 on the rear surface side. The left and right side portions of the base 10 project laterally from below the table 20. The left and right projecting portions 14 are provided with pedestal portions 14a that rise upward. A base portion 81 is supported along the upper surface of the table 20 across the left and right pedestal portions 14a. FIG. 7 shows a state where the positioning fence 80 is removed. Two auxiliary pedestal portions 14 b are provided below the table 20 and on the upper surface of the base 10. In FIG. 7, the two auxiliary pedestal portions 14 b can be seen through the arc-shaped insertion grooves 24 provided in the table 20. The base portion 81 is supported along the upper surface of the table 20 also by support columns (not shown) attached to the auxiliary pedestal portion 14b.

  The left and right auxiliary fences 82 are supported flush with the upper side of the base portion 81 (with the positioning surfaces 80a accurately matched). By attaching the auxiliary fence 82 to the upper side of the left and right base parts 81 to increase the height of the positioning surface 80a, the cutting material W having a large height can be positioned with higher accuracy. Cutting can be performed in a state where W is leaned diagonally between the upper surface of the table 20 and the positioning surface 80a. The left and right auxiliary fences 82 can be detached from the base part 81, respectively. By removing the auxiliary fence 82, the cutting machine body 100 can be tilted leftward or rightward at a larger angle. FIG. 29 shows a state in which the left and right auxiliary fences 82 are removed from the base part 81. As shown in the drawing, the left and right auxiliary fences 82 removed can be stored on the holder fitting 15 respectively. The left and right holder fittings 15 are frame members made by bending a steel bar into a U shape, and are supported by the projecting portion 14 of the base 10 so as to be slidable to the left and right as shown in FIG. In FIG. 8, the state which accommodated the holder metal fitting 15 on either side is shown. As shown in FIG. 29, the left and right holder fittings 15 can be pulled out to the side, and the auxiliary fence 82 can be placed and stored on the upper surface side.

  As shown in FIG. 31, the auxiliary fence 82 is provided with a positioning pin portion 82a and a clip portion 82b. The positioning pin portion 82 a is inserted into a positioning hole 81 a provided in the base portion 81 when the auxiliary fence 82 is attached flush with the base portion 81. When removing from the base part 81 and storing on the holder metal 15, the clip part 82b is used. As shown in FIG. 30, the auxiliary fence 82 is held on the holder metal 15 by causing the clip portion 82 b to elastically hold a part of the holder metal 15. FIG. 30 shows a state in which the front support part 15a of the holder metal 15 is held by the clip part 82b and the auxiliary fence 82 is accommodated. The support portion 15b can be held and stored.

  For example, as disclosed in Japanese Patent Application Laid-Open No. 2010-280013, a part that accommodates the auxiliary fence removed in this type of tabletop cutting machine has not been particularly considered. For this reason, it takes time and effort to find the removed auxiliary fence, or if it is lost, the cutting material must be positioned with a low positioning surface, and as a result, workability such as a reduction in cutting accuracy may be impaired. there were. According to the auxiliary fence storage structure illustrated above, it can be stored on the left and right sides of the base 10, so that it does not take time to search for it when necessary, and there is no risk of losing it. There is no.

  As shown in FIG. 32, a vertical vise 180 for fixing the cutting material W can be attached to the left and right projecting portions 14 of the base 10. With the vertical vise 180, the cutting material W can be pressed against the upper surface of the table 20 from above and sandwiched and fixed in the plate thickness direction. The vertical vise 180 includes a first support 181, a first arm 182 coupled to the upper part of the first support 181, a second support 183 supported at the tip of the first arm 182, and a lower part of the second support 183. A coupled second arm portion 184 and a screw shaft 185 supported at the tip of the second arm portion 184 are provided. The first support column 181 is inserted into a support hole 14c provided on the rear side of the pedestal part 14a and can be inserted and removed without backlash. The first support column 181 is fixed in an inserted state into the support hole 14c by tightening a fixing screw (not shown in FIG. 32) provided at the rear portion of the pedestal portion 14a. The first arm portion 182 is supported so as to be rotatable left and right around the first support column 181. The second support column 183 is supported on the rotating distal end side of the first arm portion 182 in a state in which the position can be adjusted up and down. The second arm portion 184 is supported so as to be rotatable left and right around the second support column 183. The screw shaft 185 is fastened to the rotating front end side of the second arm portion 184. A knob 187 is provided at the upper end of the screw shaft 185 to be gripped by the user during the tightening operation. A circular pressing plate 186 that is pressed against the upper surface of the cutting material W is supported on the lower end portion of the screw shaft 185.

  By rotating the screw shaft 185 in the tightening direction in a state where the pressing plate 186 is in contact with the upper surface of the cutting material W placed on the table 20, the upper surface of the cutting material W is rotated by the screw force. The cutting material W can be fixed onto the table 20 by pressing against the table 20. In the state shown in FIG. 32, the left and right auxiliary fences 82 are respectively supported on the upper surface side of the base portion 81, and a high positioning surface 80a is formed. The vertical vise 180 is supported so as to straddle the positioning fence 80 from the rear side to the front side. As described above, the vertical vise 180 can be supported using the support hole 14c of the pedestal portion 14a, or can be supported using the auxiliary fence 82 which is removed and stored in the pedestal portion 14a.

  As shown in FIG. 33, the auxiliary fence 82 removed from the base part 81 is held in a state in which its positioning pin part 82a is inserted into a holding hole 14d provided in the side part of the base part 14a so as to protrude sideways. can do. The insertion state of the positioning pin portion 82a into the holding hole 14d is locked by tightening the fixing screw 16. The rear portion 82c of the auxiliary fence 82 is placed on and held on the upper surface of the overhang portion 14. As described above, the auxiliary fence 82 holds the positioning surface 80a so as to be flush with the upper surface of the table 20, so that the cutting material W having a large lateral width can be placed on the table 20 more stably. As a result, the cutting process of the cutting material W having a large lateral width can be performed with high accuracy.

  As shown in FIG. 34, the vertical vice 180 can be supported using the auxiliary fence 82 held in this way. FIG. 34 shows a state in which the vertical vice 180 is supported only on the left side, but the vertical vice 180 can also be supported on the right side by using the auxiliary fence 82 held on the right pedestal portion 14a. The auxiliary fence 82 is provided with a support hole 82d. The vertical vice 180 can be supported by inserting the first support column 181 into the support hole 82d. Although not visible in the figure, a fixing screw is provided on the rear side of the support hole 82d. By tightening the fixing screw, the first support column 181 is fixed in a state of being inserted into the support hole 82d. By supporting the vertical vise 180 using the support hole 82d of the auxiliary fence 82, the vertical vice 180 can be held at a position shifted leftward or rightward from the pedestal portion 14a. The large cutting material W can be fixed in the left-right direction with a large span, and therefore the cutting material W having a larger left-right width can be more reliably fixed.

[Lower limit position switching mechanism 200]
Next, the tabletop cutting machine 1 according to the present embodiment includes a lower limit position switching mechanism 200, a swing lock mechanism 210, a slide intermediate stopper mechanism 220, and a slide rear end position lock mechanism 230. The lower limit position switching mechanism 200 is a mechanism for switching the lower limit position of the vertical swing range of the cutting machine main body 100 and has a function of adjusting or switching the cutting depth of the cutting tool 102 with respect to the cutting material W. As shown in FIGS. 22, 29, 32, and 35, a stopper pedestal is integrally provided at a lower portion of the main body slider 77. A stopper plate 201 is provided on the upper surface of the stopper cradle so that its position can be changed in the left-right direction. The stopper plate 201 is provided with a knob portion 201a. The user can grasp the knob portion 201a and move the stopper plate 201 in the horizontal direction (left-right direction) between the first position on the right side and the second position on the left side. In the state of being positioned at the first position on the right side, a long hole-shaped escape hole 201b provided in the stopper plate 201 and an insertion hole (not shown in the drawing) provided vertically through the stopper cradle overlap. When the stopper plate 201 is moved to the second position on the left side, the escape hole 201b is shifted to the left side with respect to the insertion hole of the stopper cradle. As a result, the insertion hole of the stopper cradle is blocked by the stopper plate 201.

  A stopper support 202 is integrally provided on the left side of the base 107 of the cutting machine main body 100 so as to protrude sideways. The stopper support portion 202 is fastened with two front and rear stopper screws 203 and 204. A knob 204a that is gripped when the user performs a tightening operation is provided on the upper portion of the second stopper screw 204 on the rear side. Lower portions of the two stopper screws 203 and 204 protrude downward from the lower surface of the stopper support portion 202. The rear stopper screw 204 extends longer downward than the front stopper screw 203. By projecting the two stopper screws 203 and 204 respectively, the projecting dimension from the lower surface of the stopper support portion 202 can be adjusted. As shown in FIG. 35, when the cutting machine body 100 is moved downward, when the stopper plate 201 is positioned at the first position on the right side, the escape hole 201b and the insertion hole that are overlapped with each other are placed on the second rear side. The stopper screw 204 enters and escapes (missing). In this case, the front first stopper screw 203 is abutted against the stopper plate 201 and the lower end position of the cutting machine body 100 is regulated.

  Although not shown in the figure, when the cutting machine body 100 is moved downward with the stopper plate 201 moved to the second position, the escape hole 201b is displaced to the left with respect to the insertion hole. Therefore, the second stopper screw 204 on the rear side extending further downward is abutted against the stopper plate 201 and the lower end position of the cutting machine body 100 is regulated. Thus, according to the lower limit position switching mechanism 200, the stopper plate 201 is positioned at the first position on the right side and the escape hole 201b and the insertion hole are overlapped with each other, and the release hole 201b is positioned at the second position on the left side. Can be switched between a state in which the first stopper screw 203 is in contact with the stopper plate 201 and a state in which the second stopper screw 204 is in contact with the stopper plate 201. As a result, the lower end position of the cutting machine main body 100 can be switched between the upper and lower positions. The lower end position of the cutting machine main body 100 regulated by the first stopper screw 203 is set to the lowest lowered end position set by the positional relationship between the cutting tool 102 and the blade edge plate 22. For example, grooving or the like can be quickly performed by the lower movement position above the lowest end position regulated by the first stopper screw 203 and the lower movement end position regulated by the second stopper screw 204. . The lower moving end positions of the upper and lower portions can be individually adjusted by rotating the first stopper screw 203 and the second stopper screw 204 to adjust the tightening amount with respect to the stopper support portion 202.

[Oscillation lock mechanism 210]
The lower end position of the cutting machine main body 100 is regulated by the swing lock mechanism 210 in addition to the first and second stopper screws 203 and 204. With the rocking lock mechanism 210, the cutting machine main body 100 can be rocked downward and locked at the lock position as shown in FIG. Details of the rocking lock mechanism 210 are shown in FIGS. The rocking lock mechanism 210 is provided on the main body support portion 77 a of the main body slider 77. A support tube portion 77b is provided at the tip of the main body support portion 77a. A lock pin 211 is supported on the inner peripheral side of the support cylinder portion 77b so as to be rotatable about its axis and movable in the left-right direction. The lock pin 211 is urged in the direction of moving to the left (lock side) by a compression spring 212 interposed between the lock pin 211 and the support cylinder portion 77b. A knob 213 is attached to the right end (head) of the lock pin 211 to be picked by the user during operation. At the left end of the knob 213, an engagement convex portion 213a is provided along the radial direction.

  A shallow engagement groove 77c and a deep engagement groove 77d are provided in a cross shape orthogonal to each other at the left end of the support cylinder portion 77b. As shown in FIG. 37, when the knob 213 is rotated and the engagement convex portion 213a is inserted into the shallow engagement groove 77c, the lock pin 211 is held in the unlocked position displaced to the right. The lock pin 211 can be moved to the left lock position by rotating the knob 213 about 90 ° from this unlock position and inserting the engagement protrusion 213a into the deep engagement groove 77d.

  A lock hole 108 is provided on the right side of the base 107 of the cutting machine body 100. FIG. 5 also shows the lock hole 108. When the lock pin 211 is moved to the left lock position in a state where the cutting machine main body 100 is moved down to the lower lock position, the tip portion is inserted into the lock hole 108. When the lock pin 211 is inserted into the lock hole 108, the cutting machine main body 100 is locked at the lower lock position. As described above, when the cutting machine main body 100 is locked at the lock position, the carrying handle 154 is positioned almost horizontally. As shown in FIG. 38, the cutting machine main body 100 is locked at the lower locking position by the swing lock mechanism 210, and the cutting machine main body 100 is locked at the slide rear end position by the slide rear end position locking mechanism 230 described later. The user can hold the carrying handle 154 and carry the tabletop cutting machine 1 in a balanced and easy manner.

[Slide intermediate stopper mechanism 220]
As shown in FIGS. 3, 5, and 32 to 34, the slide intermediate stopper mechanism 220 is provided on the upper right side portion of the main body support portion 60. The slide intermediate stopper mechanism 220 has a configuration in which a stopper plate 221 is supported via a support shaft 222 so as to be able to rotate back and forth. A stopper portion 221a that protrudes to the left is provided on the side portion of the stopper plate 221 by bending. The stopper plate 221 is pivoted forward about a support shaft 222 from a retracted position (position shown) along the right side portion of the main body support portion 60 as shown by a white arrow in FIG. It can be moved to a stopper position (not shown in the figure) that protrudes to the side of the slide bar 75. When the stopper plate 221 is moved to the stopper position, the stopper portion 221a enters the movement path of the main body slider 77. For this reason, when the cutting machine main body 100 is slid rearward with the stopper plate 221 moved to the stopper position, the rear end surface of the main body slider 77 comes into contact with the stopper portion 221a, and further rearward sliding operation is performed. Be regulated.

  In a state where the stopper plate 221 is positioned at the retracted position, the main body slider 77 can be slid to a position where the rear end surface thereof is in contact with the front surface of the main body support portion 60 (full slide range). By moving the stopper plate 221 to the front stopper position, the backward end position of the entire slide range can be displaced forward by the length of the stopper portion 221a. When the slide intermediate stopper mechanism 220 regulates the slide retracted end position, for example, when the cutting material W called a crown mold material is obliquely leaned against the positioning fence 80 and the cutting work is performed, the attachment portion of the cutting tool 102 is attached. The sliding motion of the cutting machine main body 100 can be regulated before the outer flange 131, the inner flange 132, and the head of the blade fixing screw 134 interfere with the cutting material W, so that the cutting material W is not damaged. It can be avoided.

[Slide rear end position locking mechanism 230]
The cutting machine main body 100 can be locked at the backward end position (slide rear end position) of the entire slide range by the slide rear end position locking mechanism 230. The slide rear end position lock mechanism 230 is provided on the upper left side of the main body support 60. The slide rear end position lock mechanism 230 includes a lock pin 231 with a knob 231a that is spring-biased to the lock side, similar to the swing lock mechanism 210 described above. An escape recess 77e for allowing the slide rear end position lock mechanism 230 to escape is provided at the rear portion of the left side portion of the main body slider 77. As shown in FIG. 2, a lock hole 77f is provided at the bottom of the escape recess 77e. As shown in FIG. 38, the main body slider is inserted by sliding the cutting machine main body 100 to the slide retreat end position while being locked at the lower locking position by the swing lock mechanism 210 and inserting the lock pin 231 into the lock hole 77f. 77. As a result, the cutting machine main body 100 is locked at the slide retracted end position. The lock pin 231 can be held in the unlock position by picking the knob 231a and moving the lock pin 231 to the unlock position against the spring biasing force and rotating it about 90 °. By holding the lock pin 231 in the unlocked position, the main body slider 77 and thus the cutting machine main body 100 can be slid back and forth.

  According to the tabletop cutting machine 1 according to the present embodiment configured as described above, with respect to the positioning fence 80, the auxiliary fence 82 that has been removed from the upper stage side (first position) of the base portion 81 is placed on the holder bracket 15 It can be attached to the second position. For this reason, it is possible to prevent the removed auxiliary fence 81 from being lost, and it is possible to eliminate the trouble of searching for the next use, and in this respect, the handling of the positioning fence 80 can be improved, and the positioning is accordingly performed. Usability of the fence 80 can be improved.

  Further, since the removed auxiliary fence 82 is configured to be stored in a state where it is placed over the front support portion 15a and the rear support portion 15b of the holder metal fitting 15 provided on the left and right side portions of the base 10, the auxiliary fence 82 is provided. Can be stored in a position that does not interfere with the cutting operation and is easily noticeable while utilizing the dead space.

  Further, the removed auxiliary fence 82 can be easily attached by pressing it against the front support portion 15a of the holder metal 15 from above and fitting the clip 82b. In this respect, the operability of attaching and detaching the auxiliary fence 82 during storage can be enhanced.

  Moreover, when not using the holder metal fitting 15, the removed auxiliary fence 82 can be hold | maintained in the state extended over the side from the base part 14a. In this case, the positioning surface 80a of the auxiliary fence 82 is positioned flush with the upper surface of the table 20, and the positioning surface 80a of the auxiliary fence 82 can function as an auxiliary table on which the cutting material W is placed. The auxiliary fence 82 can be provided with a function of positioning the cutting material W on the table 20 and an auxiliary table function on which the cutting material W is placed. In this respect, the added value of the auxiliary fence 82 can be increased. .

  Further, the illustrated auxiliary fence 82 is provided with a support hole 82d for attaching a vertical vise. As described above, with the auxiliary fence 82 held at a position protruding from the side of the pedestal portion 14a, the vertical support 180 can be attached by inserting the first support column 181 into the support hole 82d. With the vertical vise 180, the cutting material W placed on the auxiliary fence 82 can be pressed and fixed from above. Thereby, in addition to the above-described positioning function of the cutting material W and the function as the auxiliary table, the auxiliary fence 82 can be provided with the function of the vertical vice as the attachment portion. 82 can be further added to value.

  Various modifications can be made to the embodiment described above. For example, the positioning fence 80 has a configuration in which the left and right sides of the cutting tool 102 have a two-stage upper and lower structure, but for example, a configuration having a two-stage upper and lower structure only on the left side can be similarly applied.

  Moreover, although the structure which uses the clip part 82b as a means to hold | maintain the removed auxiliary fence 82 in the holder metal fitting 15 was illustrated, it may replace with this and may be set as the structure which uses a magnet, for example.

  The configuration in which the positioning pin portion 82a is inserted into the positioning hole 81a and the auxiliary fence 82 is coupled to the upper side of the base portion 81 has been exemplified. However, the auxiliary device is configured to be attached to and detached from the base portion by sliding in the lateral direction. The structure illustrated about the storage site | part is applicable also about a fence.

  Moreover, although the AC power supply type tabletop cutting machine 1 has been exemplified, the present invention can be similarly applied to a battery type tabletop cutting machine that uses a battery that can be repeatedly used by charging as a power source.

DESCRIPTION OF SYMBOLS 1 ... Desktop cutting machine W ... Cutting material 10 ... Base 11 ... Lock board part 12 ... Lock recessed part 13 ... Angle scale 14 ... Overhang | projection part 14a ... Base part, 14b ... Auxiliary base part, 14c ... Support hole, 14d ... Holding hole 15 ...... Holder bracket, 15a ... front support part, 15b ... rear support part 16 ... fixing screw 20 ... table 20a ... support wall part (front side), 20b ... support wall part (rear side), 20c ... screw hole 20d ... support hole, 20e ... pedestal part, 20f ... sandwiching rib, 20g ... insertion window part 21 ... rotation support shaft 22 ... blade end plate 23 ... pointer part 24 ... insertion groove 30 ... rotation lock operation part 31 ... first rotation lock mechanism 32 ... first 2 rotation lock mechanism 33 ... operation member (first rotation lock mechanism)
34. Operation member (second rotation lock mechanism)
34a ... Operation part, 34b ... Slope part, 34c ... Oscillating shaft part 35 ... Screw shaft part, 35a ... Screw part 36 ... Transmission bracket (transmission member)
36a ... upper contact part, 36b ... lower contact part 36c ... insertion hole (right side), 36d ... insertion groove hole (left side)
37 ... Fixing screw 38 ... Sleeve member 39 ... Operation knob 40 ... Transmission rod (transmission member)
DESCRIPTION OF SYMBOLS 41 ... Rod receiving part 42 ... Lock member 42a ... Input part, 42b ... Output part 43 ... Support shaft 46 ... Engagement shaft 47 ... Lock pin 48 ... Compression spring 50 ... Inclination fixing mechanism 51 ... First pulley 52 ... Thrust bearing 53 ... Flange 54 ... second pulley 54a ... flange part 54b ... engagement recess 55 ... transmission belt 56 ... idler 57 ... arm cover 57a ... belt pressing part 58 ... engagement pin 59 ... compression spring 60 ... main body support part 61 ... Body support arm, 61a ... Belt pressing part 62 ... Tilt positioning mechanism 63 ... Tilt receiving part 64 ... Tilt support part, 64a ... Insertion hole, 64b ... Step part 65 ... Left and right inclined shaft, 65a ... Screw shaft part 66,67 ... Inclined stopper bolt 68 ... right angle positioning release button, 68a ... right angle stopper bolt 69 ... right angle positioning part, 69a ... contact part, 69b ... engaging part 70 ... inclined -Decided Me rods, 70a ... contact portion 71 ... compression spring 72 ... operation bracket 72a ... operation knob 73 ... operation knob 75 ... slide bar (upper side)
76 ... Slide bar (lower side)
77 ... Main body slider 77a ... Main body support portion, 77b ... Support cylinder portion, 77c ... Shallow engagement groove, 77d ... Deep engagement groove 77e ... Escape recess, 77f ... Lock hole 78 ... Coupling member 79 ... Transmission rod, 79a ... Bearing (Rear part), 79b ... Bearing (Front part side)
DESCRIPTION OF SYMBOLS 80 ... Positioning fence, 80a ... Positioning surface 81 ... Base part, 81a ... Positioning hole 82 ... Auxiliary fence 82a ... Positioning pin part, 82b ... Clip part, 82c ... Rear part, 82d ... Support hole 83 ... Joint part 90 ... Right angle positioning Mechanism 91 ... Right-angle positioning bolt 92 ... Support shaft 93 ... Torsion spring 94 ... Compression spring 100 ... Cutting machine body 101 ... Electric motor 102 ... Cutting tool 103 ... Fixed cover, 103a ... Arrow 104 indicating the rotation direction of the cutting tool 102 ... Movable Cover, 104a ... Boss part 105 ... Vertical swing support shaft 106 ... Torsion spring 107 ... Base part 108 ... Lock hole 109 ... Bearing (ball bearing)
DESCRIPTION OF SYMBOLS 110 ... Motor housing, 110a ... Air inlet 111 ... Stator 112 ... Rotor, 112a ... Commutator 113 ... Motor shaft, 113a ... Output gear part J ... Motor axial line 114, 115 ... Bearing 116 ... Cooling fan 117 ... Carbon brush 120 ... Gear head part 121 ... Gear housing 122 ... First driven gear 123 ... First driven shafts 123a and 123b ... Bearing 124 ... Second driven gear 125 ... Third driven gear 126 ... Second driven shafts 126a and 126b ... Bearing 127 ... First 4 driven gear 130 ... spindle 130a, 130b ... bearing 131 ... outer flange 132 ... inner flange 134 ... cutting tool fixing screw 140 ... controller housing part 141 ... controller 145 ... exhaust port 150 ... handle part 151 ... leg part 152 ... switch lever 153 ... Lock-off switch 154 ... Carin Handle 160 ... Dust guide 161 ... Main body side connection port, 161a ... Engagement hole 162 ... Dust collection hose, H ... Dust collection hose axis 163 ... Connection member, 163a ... Groove 164 ... Holding member, 164a ... Engagement projection 165 ... Connection member, 165a ... Groove 170 ... Relay duct (hose intermediate connection)
171: Support side connection port, 171a: Engagement hole 172 ... Holding member, 172a ... Engagement convex part 173 ... Base part, 173a ... Internal passage 174 ... Dust collection duct 175 ... Joint 176 ... Discharge nozzle 180 ... Vertical vise 181 ... first support 182 ... first arm 183 ... second support 184 ... second arm 185 ... screw shaft 186 ... pressing plate 187 ... knob 200 ... lower limit position switching mechanism 201 ... stopper plate, 201a ... knob, 201b ... Relief hole 202 ... stopper support 203 ... first stopper screw (front side)
204 ... Second stopper screw (rear side)
210 ... Rocking lock mechanism 211 ... Lock pin 212 ... Compression spring 213 ... Knob, 213a ... Engaging projection 220 ... Slide intermediate stopper mechanism 221 ... Stopper plate, 221a ... Stopper 222 ... Support shaft 230 ... Slide rear end position lock Mechanism 231 ... Lock pin, 231a ... Knob

The second driven gear 124 is meshed with the third driven gear 125. The third driven gear 125 is fixed on the second driven shaft 126. The second driven shaft 126 is rotatably supported by the gear housing 121 via bearings 126a and 126b. The second driven shaft 126 is arranged in parallel with the first driven shaft 123. The third driven gear 125 is meshed with the fourth driven gear 127. The fourth driven gear 127 is fixed on the spindle 130. The spindle 130 is rotatably supported by the lower part of the gear housing 121 via bearings 130a and 130b. The spindle 130 is disposed in parallel with the first and second driven shafts 123 and 126 .

Claims (6)

A table on which the cutting material is placed, a cutting machine main body supported above the table, and a pair of positioning surfaces on the left and right with respect to the cutting blade of the cutting machine main body, and the cutting material in the table surface direction A tabletop cutting machine with a positioning fence for positioning,
The positioning fence has an upper and lower two-stage structure having a lower base portion and an upper auxiliary fence, and the auxiliary fence is positioned on the upper portion of the base portion and has a positioning surface on the base portion. A tabletop cutting machine that can be attached to a first position that is flush with a second position that is removed from the upper side of the base portion. 2. The tabletop cutting machine according to claim 1, wherein the second position is set to the left and right sides of the base that supports the table. 3. The tabletop cutting machine according to claim 2, wherein a holder metal fitting is provided on the left and right sides of the base so that the holder metal can be pulled out sideways, and the auxiliary fence can be attached to a support portion of the holder metal with respect to the base. Cutting machine. It is a tabletop cutting machine of Claim 3, Comprising: The said auxiliary fence is a tabletop cutting machine made into the structure which can be attached by pressing from the upper part with respect to the support part of the said holder metal fitting. 2. The tabletop cutting machine according to claim 1, wherein the positioning surface of the auxiliary fence is flush with the upper surface of the table when the auxiliary fence is attached to the second position. 6. The tabletop cutting machine according to claim 5, wherein a vertical vise for fixing a cutting material can be attached to the auxiliary fence attached to the second position.

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