JP2008229876A - Bench cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bench cutter ensuring a high oblique cutting capacity to achieve reduction of size. <P>SOLUTION: The bench cutter is equipped with a base part for supporting a material to be processed, a circular saw part having a motor, a holder for supporting the circular saw part with respect to the base part so as to be capable inclining the circular saw part left and right and shaking the same up and down, a saw blade shaft 15 rotatably supported on the circular saw part through a pair of saw blade axis bearings 102 and 105 at two points in its axial direction and the circular saw blade 14 mounted on the saw blade shaft 15 in a detachable manner and constituted so that the circular saw part is inclined left and right or shaken up and down with respect to the base part while rotationally driving the circular saw blade 14 by the motor 21. A pair of the saw blade axis bearings 102 and 105 are arranged on both sides of the circular saw blade 14 in the axial direction of the saw blade shaft 15. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tabletop cutting machine in which a circular saw blade can be moved up and down and tilted left and right with respect to the upper surface of a base portion.

  In a conventional tabletop cutting machine, a saw blade shaft is rotatably supported by two bearings in the axial direction, and a circular saw blade is attached to one end of the saw blade shaft overhanging from one bearing. A structure in which a power transmission gear is bound between the bearings has been adopted.

In a tabletop cutting machine, a circular saw blade is mounted on a saw blade shaft supported by two axially separated bearings. However, due to variations in the processing accuracy of the saw blade shaft, misalignment of the shaft core, etc. Since the holding accuracy of the blade is deteriorated, the holding accuracy of the circular saw blade becomes higher when the bearing interval is wider. Moreover, since the load at the time of power transmission is received by the bearing portion in terms of strength, a wider bearing interval reduces the load on the bearing portion and is advantageous in strength. For this reason, the bearing holding part spaced apart in the axial direction is a limitation, and the right inclined cutting height is determined (see Patent Document 1).
JP2003-145501 (FIG. 4).

  As described above, in the conventional tabletop cutting machine, since the bearing holding portions that are separated in the axial direction are limited, it is not possible to ensure the same size as the left inclined cutting height as the right inclined cutting height, Commercialization with a circular saw blade was difficult.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a tabletop cutting machine that can ensure high inclined cutting ability and can be downsized.

  In order to achieve the above object, a first aspect of the present invention is directed to a base portion that supports a workpiece, a circular saw portion having a motor, and the circular saw portion is tilted horizontally and vertically swung with respect to the base portion. A holder that can be supported, a saw blade shaft rotatably supported by the circular saw portion at two points in the axial direction via a pair of saw blade shaft bearings, and a circle that is detachably attached to the saw blade shaft In a tabletop cutting machine comprising a saw blade and cutting the material to be cut by tilting or swinging the circular saw portion left and right with respect to the base portion while rotationally driving the circular saw blade by the motor, The pair of saw blade shaft bearings are arranged on both sides of the circular saw blade in the axial direction of the saw blade shaft.

  According to a second aspect of the present invention, in the first aspect of the invention, the motor is disposed on a surface intersecting with an extended surface of the side surface of the circular saw blade, and the motor shaft, the intermediate shaft, and the saw blade shaft of the motor. Are arranged in parallel with each other, and two points in the axial direction of the intermediate shaft are rotatably supported by a pair of intermediate shaft bearings, and a pulley connected between the intermediate shaft bearings of the intermediate shaft and the motor shaft An endless belt is wound between a pulley bound to an end portion, and a pinion provided at an axial end protruding from one intermediate shaft bearing of the intermediate shaft and one of the saw blade shafts A gear provided at one end in the axial direction protruding from the saw blade shaft bearing is meshed.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the saw blade shaft is configured by combining shafts divided into two in the axial direction, and each shaft is rotated by the saw blade shaft bearing. It is characterized by being supported as possible.

  The invention according to claim 4 is the invention according to claim 3, wherein the one shaft is coupled to the other shaft by taper fitting and screwing.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the circular saw portion is slidable in a direction parallel to a side surface of the circular saw blade and parallel to the upper surface of the base portion. It is characterized by supporting.

  According to the first aspect of the present invention, since the pair of saw blade shaft bearings are arranged on both sides of the circular saw blade in the axial direction of the saw blade shaft, the circular saw blade is supported in a double-supported state, and its holding accuracy Is increased. In addition, since the distance between the circular saw blade and the saw blade shaft bearing can be reduced, the right inclined cutting height can be ensured to be the same size as the left inclined cutting height. Commercialization can be realized.

  According to the second aspect of the present invention, since the motor is arranged on the surface intersecting the extended surface of the side surface of the circular saw blade, the balance of the tilting operation load is improved and the operability of the tabletop cutting machine is improved. The rotation of the motor shaft is transmitted to the intermediate shaft through the pulley and the belt, and further transmitted from the intermediate shaft to the saw blade shaft through the pinion and the gear. Therefore, the saw blade shaft and the circular saw blade attached thereto Is rotated at a predetermined speed to cut the material to be cut.

  According to the invention described in claim 3, since the saw blade shaft is configured by connecting the shafts divided into two in the axial direction, the circular saw blade can be easily replaced.

  According to the invention described in claim 4, since one shaft constituting the saw blade shaft is coupled to the other shaft by taper fitting and screwing to the other shaft, misalignment of the saw blade shaft is prevented. Thus, the circular saw blade can be held with high accuracy by the saw blade shaft.

  According to the invention described in claim 5, since the circular saw portion is supported so as to be slidable in a direction parallel to the side surface of the circular saw blade and parallel to the upper surface of the base portion, the cutting application of the tabletop cutting machine is further expanded. .

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a side view of a tabletop cutting machine according to the present invention, FIG. 2 is a front view of the tabletop cutting machine, FIG. 3 is a cross-sectional view taken along line AA of FIG. 1, and FIG. FIG. 5 is a front view showing the left inclined cutting state of the tabletop cutting machine, FIG. 6 is a sectional view taken along the line BB of FIG. 1, and FIG. 7 is a partial sectional view showing details of the support structure of the saw blade shaft. FIG. 8 is a longitudinal sectional view showing the state of the circular saw part when cutting right and FIG. 9 is a partial sectional view of the saw blade shaft support part showing the state when replacing the circular saw blade.

  The tabletop cutting machine according to the present embodiment includes base portions 1 and 2 for placing a workpiece 35, a motor 21 that is a driving source, and a circular saw blade 14 that is rotationally driven by the motor 21. A support member 8 is provided for supporting the circular saw portion 12 in a vertically swingable manner by a circular saw portion 12 and a swing shaft 11 substantially parallel to the axial direction of the circular saw blade 14. The angle with respect to the upper surface of the base parts 1 and 2 can be changed.

  The base portion includes a base 1 that can be placed on a floor surface and the like, and a turntable 2 that is embedded in the base 1 so as to be rotatable by a rotation shaft orthogonal to the upper surface. Is substantially flush with the upper surface of the base 1. At the time of work, the workpiece 35 can be placed on the base 1 and the turntable 2 which are the base portions.

  The base 1 is provided with a pair of fences 3 having a pressing surface (right end surface in FIG. 1) 3a substantially orthogonal to the upper surface of the base 1, and a prism-shaped workpiece 35 as shown in FIG. When cutting, stable cutting work can be performed by performing cutting work in a state where one surface of the workpiece 35 is in contact with the pressing surface 3a of the fence 3. When the turntable 2 is rotated with respect to the base 1, the positions of the holder 5, guide bar 7, support member 8, and circular saw portion 12 connected to the turntable 2 with respect to the fence 3 are changed. The angle between the pressing surface 3a of the fence 3 and the side surface of the circular saw blade 14 changes, and the workpiece 35 that is in contact with the pressing surface 3a of the fence 3 can be cut at various angles.

  As shown in FIG. 1, near the rear end (left side in FIG. 1) of the turntable 2, the holder 5 erected upward is substantially parallel to the side surface of the circular saw blade 14 and the upper surface of the turntable 2. It is connected via a tilting shaft 4 extending in the direction. As shown in FIGS. 4 and 5, the holder 5 is supported to be tiltable with respect to the turntable 2 with the tilting shaft 4 as a fulcrum.

  Further, a protruding portion 2a protruding upward is provided at the rear side end portion of the turntable 2, and a clamp lever 6 (FIG. 1) that constitutes a tilt restricting means provided on the holder 5 on the protruding portion 2a. Is tilted, the tilt of the turntable 2 with respect to the base 1 is restricted (fixed). In this way, the tilt of the holder 5 relative to the turntable 2 can be fixed / released by operating the clamp lever 6. Here, as shown in FIGS. 2 to 4, an arc-shaped long hole 2 b having the tilt shaft 4 as a fulcrum is formed in the projecting portion 2 a of the turntable 2, and a holder is placed in the long hole 2 b. The shaft portion of the clamp lever 6 attached to 5 is slidably engaged. The long hole 2b has such a length that the left and right inclination angles of the circular saw portion 12 are 45 ° or more.

  On the other hand, as shown in FIG. 1, in the vicinity of the upper end portion of the holder 5, two hole portions 5 c are formed that are arranged substantially parallel to the side surface of the circular saw blade 14 and the upper surface of the base 1. An end of the hard guide bar 7 made of a pipe material having substantially the same diameter or slightly larger diameter is inserted into the hole 5c of the holder 5. In the tabletop cutting machine according to the present embodiment, a fixing means 5d for preventing the guide bar 7 from coming off and rotating with respect to the holder 5 is provided so as to protrude into the hole 5c of the holder 5 (FIG. 1). Further, the two guide bars 7 inserted into the hole 5 c of the holder 5 have substantially the same length, and the length thereof is set shorter than the longitudinal length of the turntable 2.

  A support 9 that is an engaging member is attached to the front end (right side in FIG. 1) of the guide bar 7. The support 9 is provided with a fixing means (not shown) for preventing the support 9 from coming off and rotating with respect to the guide bar 7.

  Further, between the holder 5 on the guide bar 7 and the support 9, the supporting member 8 that supports the swing shaft 11 of the circular saw portion 12 is provided. As shown in FIG. 3, the support member 8 is formed with two hole portions 8a substantially concentric with the guide bar 7, and one of the sliding portions 8a (the lower side in FIG. 3) has one sliding portion 8a. A ball bearing 8 b that is a moving portion is provided. The ball bearing 8 b has an inner diameter that is substantially the same as the outer diameter of the guide bar 7 and can abut against the outer diameter of the guide bar 7.

  Further, in the other hole 8a (upper side in FIG. 3), two moving members 8c which are the other sliding portions are provided between the guide bar 7 and these moving members 8c are supported. The tip of the bolt 8d screwed to the member 8 is prevented from falling out of the hole 8a, and the movement can be adjusted by pressing the tip of the bolt 8d.

  Further, the support member 8 is provided with a knob 10 which is a fixing means capable of projecting into the upper hole portion 8 a, and the tip of the knob 10 presses the outer diameter portion of the guide bar 7 to thereby guide the guide bar 7. The position of the support member 8 can be fixed above.

  By adjusting the position of the moving member 8c by operating the bolt 8d, the position of the guide bar 7 in the hole 8a can be adjusted. That is, if the two moving members 8c are moved in the left direction in FIG. 3, the support member 8 rotates counterclockwise in FIG. 3 with the lower guide bar 7 as a fulcrum. Thus, the angle of the side surface of the circular saw blade 14 with respect to the upper surface of the base 1 can be finely adjusted by adopting a configuration in which the support member 8 can be rotationally adjusted with one guide bar 7 as a fulcrum.

  The axial dimension of the hole 8a of the support member 8 is substantially the same as the axial dimension of the ball bearing 8b which is one of the sliding parts, and the support member 8 is more than the minimum necessary so as not to impair the slidability. It is a dimension. In addition, the support member 8 can be configured by providing a fine angle adjustment mechanism so that the moving member 8c, which is the other sliding portion, can be moved, and by providing a fixing means in the vicinity of the moving member 8c, which is the other sliding portion. Can be kept small, and the tabletop cutting machine main body can be reduced in size, and the momentum of the circular saw portion 12 can be secured.

  The support 9 that is an engaging member that engages the two guide bars 7 on the opposite side of the holder 5 is provided, and the support member 8 comes into contact with the holder 5 to make a circular saw. The sliding of the portion 12 toward the holder 5 is restricted, and the sliding in the direction away from the holder 5 is restricted by coming into contact with the support 9, so that the support member 8 and the circular saw portion 12 are disconnected. It can be easily stopped.

  As shown in FIG. 3, a swing shaft 11 extending in a direction perpendicular to the axial direction of the guide bar 7 is fixed to the support member 8, and the support member 8 is interposed via the swing shaft 11 as shown in FIG. The circular saw portion 12 is connected.

  As shown in FIG. 3, a recess 8e is formed below the swing shaft 11 of the support member 8, and a laser oscillator 40 is provided in the recess 8e. The laser oscillator 40 is configured to be movable and adjustable at least in the axial direction of the circular saw blade 14, and can irradiate the workpiece 35 with laser light extending on an extension line on the side surface of the circular saw blade 14.

  A spring 13 is provided on the outer periphery of the swing shaft 11, and the circular saw portion 12 is biased by the spring 13 so as to swing in a direction (upward) in which the circular saw blade 14 is separated from the base portions 1 and 2. In a normal state, it is at a position that is swung most upward (on the side opposite to the base) in FIG. 1 by a stopper mechanism (not shown). The material to be cut 35 is cut by swinging the circular saw portion 12 downward (base portion side) with the swing shaft 11 as a fulcrum against the urging force of the spring 13.

  When the circular saw portion 12 is swung downward (base portion side), the circular saw blade 14 enters a groove portion (not shown) formed in the turntable 2, and the circular saw blade 14 enters a predetermined amount. In this state, the swinging of the circular saw portion 12 is stopped by a stopper mechanism (not shown) as shown in FIG.

  As shown in FIG. 1, the tabletop cutting machine according to the present embodiment urges the circular saw portion 12 toward the holder 5 from the state where the circular saw portion 12 is swung toward the base portions 1 and 2. The support member 8 slides on the guide bar 7, and the wide workpiece 35 can be cut while the circular saw portion 12 and the circular saw blade 14 move to the holder 5 side.

  Here, the detail of the structure of the circular saw part 12 is demonstrated based on FIG.

  In the circular saw portion 12, the motor 21 is arranged in a motor housing 25 on a surface intersecting with an extended surface of the side surface of the circular saw blade 14, and a pulley 23 is provided at an end portion of the motor shaft 22 of the motor 21. Is bound.

  Further, the gear cover 37 and the saw cover 20 are provided with a pulley shaft 17 and a saw blade shaft 15 which are intermediate shafts in parallel with the motor shaft 22, and two points in the axial direction of the pulley shaft 17 are a pair of intermediate shaft bearings. 106 and 107 are rotatably supported. A pulley 18 is connected between the intermediate shaft bearings 106 and 107 of the pulley shaft 17, and an endless shape is provided between the pulley 18 and the pulley 23 connected to the end of the motor shaft 22. A transmission belt 24 is wound. Further, a pinion 17 a provided integrally with an end portion in the axial direction protruding from one intermediate shaft bearing 106 of the pulley shaft 17 is integrally formed.

  Thus, in the present embodiment, the saw blade shaft 15 is rotatable at two points in the axial direction by the pair of saw blade shaft bearings 102 and 105 disposed on both sides of the circular saw blade 14. It is supported. That is, the circular saw blade 14 is supported in a supported state at a portion between the saw blade shaft bearings 102 and 104 of the saw blade shaft 15.

  Here, as shown in detail in FIG. 7, the saw blade shaft 15 is configured by combining shafts divided into two in the axial direction, one shaft is configured by a bolt 101, and the other shaft is a saw. The blade shaft main body 15A is used. The bolt 101 is rotatably supported by one saw blade shaft bearing 102 lightly press-fitted into the saw cover 20, and the circular saw shaft body 15 </ b> A is rotatably supported by the other saw blade shaft bearing 105.

  Incidentally, as shown in FIG. 7, a tapered hole 15a and a screw hole 15c are formed at the tip of the saw blade shaft main body 15A, and the bolt 101 is screwed into the screw hole 15c of the saw blade shaft main body 15A. At the same time, the saw blade shaft 15 is configured by being taper-fitted into the taper hole 15a and coupled to the saw blade shaft main body 15A with high precision in a state where the shaft center is coincident.

  Thus, the circular saw blade 14 is sandwiched between the two wheel washers 103 and 104 and mounted on the saw blade shaft 15. Accordingly, when the circular saw blade 14 is replaced, as shown in FIG. 9, the bolt 101 is removed from the saw blade shaft main body 15A and pulled out from the saw blade shaft bearing 102 in the direction of the arrow shown. Then, since one wheel washer 103 can be removed, the circular saw blade 14 can be easily removed and replaced with another one. Further, the circular saw blade 14 can be easily attached to the saw blade shaft 15 by the reverse procedure.

  A gear 16 is attached to the end of the saw blade shaft 15 protruding from the saw blade shaft bearing 105, and the gear 16 meshes with the pinion 17 a formed at one end of the pulley shaft 17. .

  By the way, the housing of the circular saw portion 12 covers a part of the outer periphery of the circular saw blade 14 and also covers a gear cover 37 that covers the saw blade shaft portion 15, the gear 16, the pulley shaft 17, the pulleys 18 and 23, and the gear cover 28. The motor housing 25 is connected to the motor 21 and covers the motor shaft 22.

  As shown in FIG. 1, an open chip discharge port 20 a is formed at the holder 5 side portion of the saw cover 20, and a dust collection bag (not shown) is attached to the chip discharge port 20 a. Alternatively, by connecting a hose connected to the dust collector to the chip discharge port 20a, it is possible to suppress the scattering of the chip generated during the cutting process.

  In the saw cover 20, a saw cover 19 having a shape covering the outer periphery of the circular saw blade 14 protruding from the saw cover 20 is rotatably provided. As shown in FIG. 2, the saw cover 19 rotates to a position covering the outer periphery of the circular saw portion 14 that protrudes from the saw cover 20 when the circular saw portion 12 swings upward. As shown in FIG. 1, when the circular saw portion 12 is swinging downward, the outer periphery of the circular saw blade 14 that is housed in the saw cover 20 and protrudes from the saw cover 20 is exposed by a link mechanism (not shown). To turn.

  Further, the motor housing 25 is integrally provided with a handle 26 positioned on the extended line of the side surface of the circular saw blade 14, and the handle 26 is provided with a switch 27 for controlling the driving of the motor 21. Yes. The motor housing 25 is provided with a sub handle 36 that serves as a handle for transportation.

  2, 4, and 5, stoppers 5 a and 5 b that are positioning means for tilting are provided on the base portion side portion of the holder 5, and the stopper 5 a is provided on the upper surface of the turntable 2. , 5b, the stopper bolts 30 and 31, which are fine tilt adjusting means, are screwed in the vertical direction. When the holder 5 is tilted with the tilt shaft 4 as a fulcrum, the stoppers 5a and 5b come into contact with the heads of the stopper bolts 30 and 31 at a predetermined tilt angle, and the tilt position of the circular saw portion 12 is positioned. The stopper bolt 30 is provided so as to be engaged with the stopper 5a when the holder 5 is inclined to the position of 45 ° in the left direction. Further, the stopper bolt 31 is provided so as to engage with the stopper 5b when the holder 5 is inclined to the position of 45 ° in the right direction.

  Furthermore, a long hole 2b is provided in the upper part of the turntable 2, and a pin 32 serving as a positioning means at the time of cutting at right angles is provided in the long hole 2b so as to be horizontally movable back and forth, as shown in FIG. The holder 5 is fitted with a stopper bolt 33 in the vertical direction so as to be positioned on the movement locus of the pin 32. When the holder 5 is in a right-angle cutting position, the tip of the stopper bolt 33 and the outer diameter portion of the pin 32 come into contact with each other.

  In the above configuration, in order to cut the workpiece 35 at a right angle by setting the circular saw 12 to a vertical position, the holder 5 is tilted with the pin 32 moved upward, and the tip of the stopper bolt 33 and the pin When tilting to a position where the outer diameter portion of 32 comes into contact, the clamp lever 6 is loosened, and the tilting position of the holder 5 is fixed.

  In order to cut the workpiece 35, the switch 27 provided on the handle 26 is operated, the motor 21 is activated, and the circular saw blade 14 is rotated via the saw blade shaft 15. In this state, the handle 26 is grasped and the circular saw 12 is pushed down against the urging force of the spring 13, and the workpiece 35 is cut by the rotating saw blade 14. When the circular saw blade 14 enters the groove portion of the turntable 2 and the cutting of the workpiece 35 is completed, the force that pushes down the circular saw portion 12 is released, and the saw blade portion 12 is restored to the original by the biasing force of the spring 13. Return to the upper limit position. When performing angle cutting, the turntable 2 is rotated, and the material to be cut 35 is cut by the cutting method.

  Next, a method for inclining the circular saw part 12 to the left and right will be described.

  The clamp lever 6 is loosened to release the fixed state of the holder 5, and the holder 5 is tilted left or right with the tilting shaft 4 as a fulcrum. At this time, since the center of gravity of the motor 21 is located almost directly above the tilting shaft 4, the circular saw portion 12 can be tilted with a substantially constant force on either the left side or the right side. When the clamp lever 6 is loosened to release the fixed state of the holder 5 and the holder 5 is tilted to the left, the stopper 5a comes into contact with the stopper bolt 30 and the circular saw portion 12 is positioned at 45 ° to the left. . In this state, the clamp lever 6 is loosened, and the inclined position of the holder 5 is fixed. In this state, the workpiece 35 is cut in the same manner as described above.

  Further, when cutting a wide workpiece 35 by right angle cutting, angle cutting, or inclined cutting, the workpiece 35 is pressed against the fence 3 and fixed, and then the knob 10 is loosened, and the handle 26 is moved forward ( When pulled in the right direction in FIG. 1, the holder 5 and the circular saw 12 move together.

  After the handle 26 is pushed down to make a cut, the cutting is performed while sliding the circular saw portion 12 toward the holder 5 (the state shown in FIG. 1). When the pressing force to the circular saw portion 12 is released after the end of cutting, the saw blade portion 12 returns to the original upper limit position by the urging force of the spring 13.

  As described above, sliding, right angle, angle, inclined cutting, and combined cutting by combining the angle cutting and the inclined cutting are possible.

As described above, in the present embodiment, since the pair of saw blade shaft bearings 102 and 105 are arranged on both sides of the circular saw blade 14 in the axial direction of the saw blade shaft 15, the circular saw blade 14 is supported in a both-end supported state. Thus, the holding accuracy is improved. Further, since the distance between the circular saw blade 14 and the saw blade shaft bearings 102 and 105 can be reduced, as shown in FIG. 8, the right inclined cutting height is as large as the left inclined cutting height. Therefore, commercialization with a small-diameter circular saw blade 14 can be realized.

  Further, in the present embodiment, since the motor 21 is disposed on the surface intersecting the extended surface of the side surface of the circular saw blade 14, the balance of the tilting operation load is improved, and the operability of the tabletop cutting machine is improved. The rotation of the motor shaft 22 is transmitted to the pulley shaft 17 through the pulley 23, the transmission belt 24 and the pulley 18, and further transmitted from the pulley shaft 17 to the saw blade shaft 15 through the pinion 17a and the gear 16. The saw blade shaft 15 and the circular saw blade 14 attached thereto are rotationally driven at a predetermined speed to cut the material to be cut 35.

  In the present embodiment, since the saw blade shaft 15 is configured by connecting the saw blade shaft main body 15A divided into two in the axial direction and the bolt 101, the circular saw blade 14 can be easily replaced as described above. be able to. In this case, since the bolt 101 is coupled to the saw blade shaft main body 15A by taper fitting and screwing, misalignment of the saw blade shaft 15 is prevented, and the circular saw blade 14 is raised by the saw blade shaft 15. The accuracy can be maintained.

  In addition, in this embodiment, since the circular saw portion 12 is supported so as to be slidable in a direction parallel to the side surface of the circular saw blade 14 and parallel to the upper surfaces of the base portions 1 and 2, the cutting use of the tabletop cutting machine Expands further.

  In the above embodiment, the gear 16 for transmitting power, the pulleys 18 and 23, and the guide bar 7 are arranged on the right side of the circular saw blade 14. On the contrary, each member is arranged on the left side. Also good. Moreover, the structure of only the base in which a base part does not have a turntable may be sufficient.

It is a side view of the tabletop cutting machine concerning the present invention. It is a front view of the tabletop cutting machine concerning the present invention. It is the sectional view on the AA line of FIG. It is a front view which shows the right inclination cutting state of the tabletop cutting machine which concerns on this invention. It is a front view which shows the left inclination cutting state of the tabletop cutting machine concerning this invention. It is the BB sectional view taken on the line of FIG. It is a fragmentary sectional view which shows the detail of the saw blade axis | shaft support structure of the tabletop cutting machine which concerns on this invention. It is a longitudinal cross-sectional view which shows the state of the circular saw part at the time of the right inclination cutting of the tabletop cutting machine which concerns on this invention. It is a fragmentary sectional view of the saw blade axis | shaft support part which shows the state at the time of circular saw blade replacement | exchange of the tabletop cutting machine which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Turntable 2a Projection part of turntable 2b Long hole of turntable 3 Fence 3a Fence holding surface 4 Tilt shaft 5 Holder 5a, 5b Stopper 5c Holder hole 5d Fixing means 6 Clamp lever 7 Guide bar 8 Support member 8a Support member hole portion 8b Ball bearing 8c Moving member 8d Bolt 8e Support member recess 9 Support 10 Knob 11 Oscillating shaft 12 Circular saw portion 13 Spring 14 Circular saw blade 15 Saw blade shaft 15A Saw blade shaft body 15a Tapered hole 15c Screw hole 16 Gear 17 Pulley shaft (intermediate shaft)
17a Pinion 18 Pulley 19 Saw cover 20 Saw cover 20a Chip discharge port 21 Motor 22 Motor shaft 23 Pulley 24 Transmission belt 25 Motor housing 26 Handle 27 Switch 30, 31 Stopper bolt 32 Pin 33 Stopper bolt 35 Work piece 36 Sub handle 37 Gear cover 40 Laser oscillator 101 Bolt 102, 105 Saw blade shaft bearing 103, 104 Wheel washer 106, 107 Intermediate shaft bearing

Claims (5)

A base part for supporting a workpiece, a circular saw part having a motor, a holder for supporting the circular saw part so that it can be tilted left and right and vertically swung with respect to the base part, and a pair of two axial points A saw blade shaft rotatably supported by the circular saw portion via a saw blade shaft bearing, and a circular saw blade removably mounted on the saw blade shaft; and the circular saw blade is driven to rotate by the motor In a tabletop cutting machine that cuts the workpiece by tilting the left and right sides of the circular saw part or swinging up and down with respect to the base part,
The tabletop cutting machine, wherein the pair of saw blade shaft bearings are arranged on both sides of the circular saw blade in the axial direction of the saw blade shaft.   The motor is disposed on a surface intersecting with the extended surface of the side surface of the circular saw blade, the motor shaft of the motor, the intermediate shaft, and the saw blade shaft are disposed in parallel to each other, and two points in the axial direction of the intermediate shaft Is rotatably supported by a pair of intermediate shaft bearings, and an endless belt between a pulley bound between the intermediate shaft bearings of the intermediate shaft and a pulley bound to an end of the motor shaft A pinion provided at an axial end protruding from one intermediate shaft bearing of the intermediate shaft, and a gear provided at one axial end protruding from one saw blade shaft bearing of the saw blade shaft The tabletop cutting machine according to claim 1, wherein:   3. The tabletop cutting according to claim 1, wherein said saw blade shaft is constituted by connecting shafts divided in two in the axial direction, and each shaft is rotatably supported by said saw blade shaft bearing. Machine.   4. The tabletop cutting machine according to claim 3, wherein the one shaft is coupled to the other shaft by taper fitting and screwing to the other shaft. 5. The tabletop cutting machine according to claim 1, wherein the circular saw portion is supported so as to be slidable in a direction parallel to a side surface of the circular saw blade and parallel to the upper surface of the base portion. .

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