WO2019111632A1

WO2019111632A1 - Stationary sawing machine for metal work

Info

Publication number: WO2019111632A1
Application number: PCT/JP2018/041658
Authority: WO
Inventors: 修司青山; 真吾桜山
Original assignee: 株式会社マキタ
Priority date: 2017-12-06
Filing date: 2018-11-09
Publication date: 2019-06-13
Also published as: JP2021028090A

Abstract

The present invention provides a stationary sawing machine for metal work that does not require an operator to follow special cautions even should usability be improved and that can protect a rechargeable battery from sparks generated when a cutting whetstone is cutting material to be cut. A stationary sawing machine (1) for metal work can cut material to be cut by rotating a rotary blade (3a). This stationary sawing machine (1) for metal work comprises an electric motor that drives so that a rotational force is generated on the rotary blade (3a), and a rechargeable battery (62) that supplies power to the electric motor. The rechargeable battery (62) is disposed so as to be screened from sparks generated when the rotary blade (3a) is cutting the material to be cut.

Description

Metalworking stationary cutting machine

The present invention relates to a stationary cutting machine for metal processing (for metalworking), and more specifically, an electric motor driven to generate a rotational force in a rotary blade by rotating a rotary blade to cut a material to be cut. The present invention relates to a metalworking stationary cutting machine provided with a motor and a rechargeable battery for supplying power to the electric motor.

BACKGROUND ART Conventionally, a metalworking stationary cutting machine has already been known as an electric power tool for cutting a material to be cut such as a metal pipe. Here, in the following Patent Document 1 (Japanese Patent Application Laid-Open No. 2016-172302), the power supply of the electric motor driven so that a rotational force is generated in the cutting whetstone 1203a for cutting the material to be cut (not shown) A stationary cutting machine 1201 for metal working supplied from a battery pack 1262 is disclosed (see FIG. 32). Thereby, the cutting work of the material to be cut can be performed even in a working environment where there is no outlet for a commercial power source (for example, AC 100 V) at the nearest place. Therefore, when using the stationary cutting machine for metal working, the working environment regarding the power source is not restricted. Therefore, the usability of the stationary cutting machine for metal working can be enhanced.

However, in the technique of Patent Document 1 described above, there is a possibility that sparks generated when the cutting grindstone 1203a cuts the material to be cut may hit these two rechargeable batteries 1262 (see FIG. 33). Therefore, workers had to work while being careful not to fly sparks far.

The present invention is intended to solve such a problem, and the purpose thereof is that the cutting stone cuts the material to be cut without requiring special attention from the operator although the usability can be enhanced. It is an object of the present invention to provide a stationary cutting machine for metal working that can protect rechargeable batteries from sparks that sometimes occur.

According to one feature of the present disclosure, a stationary cutting machine for metal processing (metalworking stationary cutting machine) can rotate a rotary blade to cut a material to be cut, and a rotational force is generated in the rotary blade. And a rechargeable battery for supplying power to the electric motor. The rechargeable battery is arranged to be shielded from sparks generated when the rotary blade cuts the material to be cut.

Therefore, as in the prior art, the power of the electric motor is supplied from a rechargeable battery. Therefore, when using the stationary cutting machine, the working environment regarding the power supply is not restricted. Therefore, the usability of this stationary cutting machine can be enhanced. Moreover, according to this configuration, the rechargeable battery is shielded from sparks by a part of the cutting machine main body (for example, the main body support portion). Therefore, it is not necessary for the worker to pay special attention when cutting work.

According to another feature of the present disclosure, a stationary cutting machine for metal working includes a base on which a workpiece can be placed on the top surface, and a cutting machine body having a rotary blade. The base has a support connection on the upper surface of the base. The cutting machine main body has a main body support portion for vertically rocking itself with respect to the base via a support shaft provided at the support connection portion. And shielding from a spark is performed by the main-body support part.

Therefore, since the main body support is a member for supporting the cutting machine main body, the main body support is set sufficiently wide from the viewpoint of strength. Therefore, spark protection for the rechargeable battery can be reliably implemented.

According to another feature of the present disclosure, the stationary cutting machine for metal working is provided with a battery mounting base on which the rechargeable battery can be mounted on the side opposite to the rotary blade with respect to the main body support.

Therefore, the rechargeable battery can be disposed behind the main body support. Therefore, the spark does not go around the rechargeable battery. Therefore, spark protection for rechargeable batteries can be implemented more reliably.

According to another feature of the present disclosure, the base is provided with a spark chute that prevents sparks from splashing.

Accordingly, it is possible to prevent sparks from scattering around the stationary cutting machine.

According to another feature of the present disclosure, the battery mounting base is provided on the body support such that the mounting surface of the rechargeable battery is on the opposite side of the side facing the top surface of the body support.

Therefore, the rechargeable battery is located outside (for example, the rear side) of the battery mounting base. Therefore, the workability of attaching and detaching the rechargeable battery to and from the battery mounting base can be enhanced.

According to another feature of the present disclosure, the battery mounting base is provided on the main body support such that the mounting surface of the rechargeable battery faces the top surface of the main body support.

Therefore, the battery mounting base is also used as the rear cover (protective material). Therefore, the rechargeable battery can be protected even when an external impact is applied from the rear side when using the stationary cutting machine.

According to another feature of the present disclosure, the battery mounting base is provided on the main body support such that the mounting surface of the rechargeable battery is orthogonal to the top surface of the main body support and faces the projecting side of the electric motor. ing.

Therefore, it is easy to mount the rechargeable battery from the overhanging side of the electric motor.

According to another feature of the present disclosure, the battery mounting base has a main body support such that the mounting surface of the rechargeable battery is orthogonal to the upper surface of the main body support and faces the opposite side of the overhanging side of the electric motor. Provided in

Therefore, it is easy to carry out the mounting operation of the rechargeable battery from the opposite side of the projecting side of the electric motor.

According to another feature of the present disclosure, a plurality of rechargeable batteries are mounted. The battery mounting base further has one other rechargeable battery such that the mounting surface of one rechargeable battery is orthogonal to the upper surface of the main body support and faces the projecting side of the electric motor. The mounting surface of the main body support portion is provided on the main body support portion so as to be orthogonal to the upper surface of the main body support portion and to face the opposite side of the projecting side of the electric motor. The mounting direction of the rechargeable battery with respect to the battery mounting base is set to be substantially downward at the bottom dead center.

Therefore, the two rechargeable batteries overlap in the left-right direction. Therefore, the battery mounting base can be made compact in the side view of the stationary cutting machine. Further, since the mounting directions of the two rechargeable batteries are set to be substantially downward, the workability of the mounting work from the substantially upper side of the rechargeable battery can be enhanced.

According to another feature of the present disclosure, a plurality of rechargeable batteries are mounted. The battery mounting base further has one other rechargeable battery such that the mounting surface of one rechargeable battery is orthogonal to the upper surface of the main body support and faces the projecting side of the electric motor. The mounting surface of the main body support portion is provided on the main body support portion so as to be orthogonal to the upper surface of the main body support portion and to face the opposite side of the projecting side of the electric motor. The mounting direction of the rechargeable battery with respect to the battery mounting base is set to be substantially forward at the bottom dead center.

Therefore, the workability of the mounting operation from the substantially lower side of the rechargeable battery can be enhanced.

According to another feature of the present disclosure, the stationary cutting machine for metal working is set such that the longitudinal direction of the rechargeable battery mounted to the battery mounting base is inclined to the spindle.

Therefore, the width of the mounting space required when mounting the rechargeable battery can be shortened.

According to another feature of the present disclosure, at the bottom dead center, the mounting surface of the battery mounting base on which the rechargeable battery is mounted is provided above the main body support, and the mounting direction of the rechargeable battery is backward. Become.

Therefore, it becomes easy for the worker to attach or remove the rechargeable battery from the front position of the stationary cutting machine. Therefore, it is possible to enhance the attachment (operability of attachment and removal) of the rechargeable battery from the front position.

According to another feature of the present disclosure, at the bottom dead center, the mounting surface of the battery mounting base on which the rechargeable battery is mounted is provided above the main body support, and the mounting direction of the rechargeable battery is forward Become.

Therefore, it will be easy for a worker to attach or remove the rechargeable battery from the position on the rear side of the stationary cutting machine. Therefore, it is possible to enhance the attachment (operability of attachment and removal) of the rechargeable battery from the rear side position.

According to another feature of the present disclosure, the rechargeable battery is entirely disposed at a position opposite to the rotating blade with a space in between with respect to the handle housing.

Therefore, the spark generated when the rotary blade cuts the material to be cut does not reach the rechargeable battery. Thus, similar to the above description, the same effect can be obtained as the rechargeable battery is shielded from sparks by a part of the cutting machine body. Therefore, it is not necessary for the worker to pay special attention when performing the cutting operation.

According to another feature of the present disclosure, the rechargeable battery is provided at the bottom dead center above the motor housing, and the mounting surface of the battery mounting base on which the rechargeable battery is mounted faces the top surface of the main body support. The opposite side of the surface is used, and the mounting direction of the rechargeable battery is arranged in the direction of the rotary blade.

Therefore, the same effect as that of the invention of claim 14 can be obtained.

According to another feature of the present disclosure, the mounting surface of the battery mounting base on which the rechargeable battery is mounted is a surface facing the top surface of the main body support, and the mounting direction of the rechargeable battery is directed to the rotary blade.

Therefore, the battery mounting base on which the rechargeable battery is mounted doubles as a rear cover (protective material). Therefore, when using this stationary cutting machine, for example, even if an external impact is applied from the rear side, this rechargeable battery can be protected. In addition, it becomes easy for the worker to attach and remove the rechargeable battery from the position on the side opposite to the rotary cutting tool of the stationary cutting machine. Therefore, it is possible to enhance the attachment (operability of attachment and removal) of the rechargeable battery from the position on the opposite side of the rotating blade.

Therefore, the rechargeable battery is provided to be closer to the motor housing. Therefore, the spark generated when the rotary blade cuts the material to be cut does not reach the rechargeable battery. Thus, similar to the above description, the same effect can be obtained as the rechargeable battery is shielded from sparks by a part of the cutting machine body. Therefore, it is not necessary for the worker to pay special attention when performing the cutting operation.

According to another feature of the present disclosure, the metalworking stationary cutter is configured such that the mounting base on which the rechargeable battery is mounted and the motor housing are integral.

Therefore, there is no need to form the battery mounting base and the motor housing separately. Therefore, the structure of the stationary cutting machine for metal working can be simplified.

It is the perspective view which looked at the stationary cutting machine at the time of use (top dead center) which concerns on 1st Embodiment from the left side. It is the side view which looked at the stationary cutting machine of FIG. 1 from the right side. In FIG. 1, it is the side view which looked at the stationary-type cutting machine at the time of storage (bottom dead center) from the right side. It is the side view which looked at the stationary-type cutting machine of FIG. 3 from the left side. It is a rear view of the stationary cutting machine of FIG. It is a top view of the stationary cutting machine of FIG. It is a longitudinal cross-sectional view of the stationary cutting machine of FIG. FIG. 4 is an enlarged view of the interior of the motor housing of the stationary cutting machine of FIG. 3; It is the perspective view which looked at the stationary type cutting machine at the time of use which concerns on 2nd Embodiment from the left side. It is the perspective view which looked at the stationary-type cutting machine at the time of use which concerns on 3rd Embodiment from the left side. It is the perspective view which looked at the stationary-type cutting machine at the time of use which concerns on 4th Embodiment from the left side. It is the perspective view which looked at the stationary-type cutting machine at the time of use which concerns on 5th Embodiment from the left side. It is the perspective view which looked at the stationary-type cutting machine at the time of use which concerns on 6th Embodiment from the left side. It is the perspective view which looked at the stationary-type cutting machine at the time of use which concerns on 7th Embodiment from the left side. It is the perspective view which looked at the stationary type cutting machine at the time of use which concerns on 8th Embodiment from the left side. It is the perspective view which looked at the stationary cutting machine at the time of use (top dead center) which concerns on 9th Embodiment from the left side. It is the side view which looked at the stationary-type cutting machine of FIG. 16 from the left side. In FIG. 17, it is a side view which shows the state at the time of storage (bottom dead center). It is a top view of the stationary-type cutting machine of FIG. It is the perspective view which looked at the stationary cutting machine at the time of use (top dead center) which concerns on 10th Embodiment from the left side. It is the side view which looked at the stationary-type cutting machine of FIG. 20 from the left side. In FIG. 21, it is a side view which shows the state at the time of storage (bottom dead center). FIG. 23 is a plan view of the stationary cutting machine of FIG. 22. It is the perspective view which looked at the stationary cutting machine at the time of use (top dead center) which concerns on 11th Embodiment from the left side. It is the side view which looked at the stationary cutting machine of FIG. 24 from the left side. In FIG. 25, it is a side view which shows the state at the time of storage (bottom dead center). FIG. 27 is a plan view of the stationary cutting machine of FIG. 26. It is the perspective view which looked at the stationary cutting machine at the time of use (top dead center) which concerns on 12th Embodiment from the left side. It is the side view which looked at the stationary-type cutting machine of FIG. 28 from the left side. In FIG. 29, it is a side view which shows the state at the time of storage (bottom dead center). FIG. 31 is a plan view of the stationary cutting machine of FIG. 30. It is the side view which looked at the stationary cutting machine which concerns on a prior art from the right side. It is a rear view of the stationary cutting machine of FIG.

Hereinafter, modes for carrying out the present invention will be described using the drawings.
First Embodiment
First, a first embodiment of the present invention will be described with reference to FIGS. In the following description, "cutting stone 3a", "brushless motor 30" and "stationary cutting machine 1" will be described as examples of "rotary blade tool", "electric motor" and "stationary cutting machine for metalworking" I decided to. Moreover, in the following description, upper, lower, front, rear, left, right are the directions of upper, lower, front, rear, left, right described in the above-mentioned figure, that is, stationary cutting machine 1 It is in the direction according to the usage condition of the user who uses it. The front side of the stationary cutting machine 1 is defined on the side where a user who uses the stationary cutting machine 1 is present. These are the same in all the embodiments described later.

The stationary cutting machine 1 is composed of a base 2 and a cutting machine main body 3 having a cutting wheel 3a which is pivotable with respect to the base 2 and is rotated by driving a brushless motor 30 (FIG. 1 to FIG. 2). The base 2 and the cutting machine body 3 will be individually described below.

First, description will be given from the base 2 (see FIGS. 1 to 4). The base 2 is formed of a rectangular base member on which a material to be cut (not shown) such as a metal pipe can be placed on a table surface 2a which is the upper surface thereof. A substantially L-shaped fence 10 including a base portion 10a and an abutting portion 10b capable of abutting on a material to be cut is assembled to the table surface 2a of the base 2 through an adjusting screw 12 and a lever 19 There is. A plate-like interposed member 24 is interposed between the table surface 2a and the base portion 10a. The interposing member 24 is fixed to the table surface 2 a of the base 2 by screwing the adjusting screw 12.

Further, by screwing the lever 19, the base portion 10 a of the fence 10 is fixed to the interposed member 24. Therefore, the fence 10 can be assembled to the table surface 2 a of the base 2 by screwing the adjusting screw 12 and the lever 19. The fence 10 is rotatably assembled to the table surface 2a around the axis of the adjusting screw 12 through an arc-shaped long hole 10c formed in the base portion 10a. Thereby, in holding | maintenance of the to-be-cut material mentioned later, even if it holds diagonally, it can respond. Therefore, the material to be cut can be cut diagonally.

Further, a vice plate 11 is slidably mounted on the table surface 2 a of the base 2 in the front-rear direction. A feed screw 14 integral with the feed handle 13 is in mesh with the vice plate 11. Therefore, by rotating the feed handle 13, the front and back slide positions of the vice plate 11 can be fixed. Therefore, since the material to be cut can be sandwiched between the contact portion 10b of the fence 10 and the vice plate 11, the material to be cut placed on the table surface 2a can be held.

Further, the table surface 2a of the base 2 is formed with a slit 15 in which the cutting grindstone 3a can be advanced and retracted. Further, on the rear side of the table surface 2 a of the base 2, a support connecting portion 16 for assembling a cutting machine main body 3 described later is provided. Further, a substantially U-shaped spark chute 17 is provided at the rear end of the table surface 2a of the base 2 to prevent the sparks from scattering when the cutting stone 3a cuts the material to be cut. The base 2 is configured in this manner.

Next, the cutting machine main body 3 will be described (see FIGS. 1 to 7). The cutting machine main body 3 mainly includes a motor housing 20 accommodating the brushless motor 30, a gear housing 21 connected to the right side of the motor housing 20 and accommodating the second gear 47, and upper and front sides of the gear housing 21. And a handle housing 22 connected to straddle each other.

The motor housing 20 is an integrally formed bottomed substantially cylindrical container, and an opening 20a is formed on the opposite side of the bottom 20b (see FIG. 8). The brushless motor 30 is composed of an inner rotor type having a rotor 31 and a stator 32. The stator 32 includes a stator core 33 formed of a plurality of laminated steel plates, insulating members provided before and after the stator core 33, and six coils wound around the stator core 33 via both the insulating members. It consists of 34 and.

On the other hand, the rotor 31 is provided with a rotating shaft 35 positioned at the axial center, a cylindrical rotor core 36 provided around the rotating shaft 35, and an outer side of the rotor core 36. It comprises a permanent magnet (not shown) whose polarity is alternately changed in the direction, and a plurality of sensor permanent magnets (not shown) provided radially on the rear side of these. Also, at the rear end of this insulating member, a sensor circuit board (not shown) equipped with three rotation detection elements for detecting the position of the sensor permanent magnet of the rotor 31 and outputting a rotation detection signal is provided. .

The rotating shaft 35 is rotatably supported by a bearing 37 held on the left side of the motor housing 20 and a bearing 38 held in the gear housing 21. In addition, a first gear 39 is formed at the tip of the rotary shaft 35, and the first gear 39 is in a state of entering the inside of the gear housing 21. The first gear 39 meshes with a second gear 47 fixed to an output shaft 44 rotatably supported by a bearing 45 held by the gear housing 21 and a bearing 46.

The tip end of the output shaft 44 is in a state of projecting into the fixed cover 49 fixed to the gear housing 21, and the cutting grindstone 3 a is fixed to the projecting end by a bolt 48. The fixed cover 49 covers the upper side of the cutting wheel 3a, and the movable cover 50 rotatably assembled to the fixed cover 49 covers the lower side of the cutting wheel 3a in a normal state. It is a powered cover. In addition, a centrifugal fan 40 is fixed to the rotational shaft 35 at a position closer to the left than the bearing 38.

A plurality of first air windows 42 and a plurality of second air windows 41 above the first air windows 42 are formed in the bottom portion 20 b of the motor housing 20. Further, on the right side of the stator 32, a dish-shaped fan guide 43 which penetrates the rotation shaft 35 and surrounds the periphery of the centrifugal fan 40 is provided. Further, a space 20 e partitioned at a rib 20 d is provided at the upper position between the outer periphery 30 a of the brushless motor 30 and the inner periphery 20 c of the motor housing 20. The controller 70 is assembled in the space 20e (see FIG. 8). That is, the controller 70 is accommodated in the motor housing 20.

The controller 70 has a control processing device and a bridge circuit device (both not shown), and is for controlling the drive of the brushless motor 30. The control processing apparatus is configured to have a CPU and an appropriate storage medium (none of which is shown). The bridge circuit device is configured as a switching circuit for driving the brushless motor 30. Further, this control processing device performs control for driving the brushless motor 30, and also performs control of regenerative braking for braking the rotation of the rotary shaft 35. Further, this bridge circuit device is configured to have an FET as a switching element.

That is, this control processing device is to drive and regeneratively brake the brushless motor 30 by controlling the bridge circuit device. Incidentally, this control processing device performs control processing based on the detection regarding the rotation of the rotor 31 by the sensor substrate (not shown). Further, a signal regarding battery information such as voltage and temperature of the rechargeable battery 62 is transmitted to the control processing device. Further, a signal regarding motor information such as the temperature of the brushless motor 30 is also transmitted to the control processing device.

Further, the controller 70 is provided such that substantially the entire area of the controller 70 overlaps the fan guide 43 in the radial direction of the brushless motor 30 (see FIG. 7). Further, the controller 70 is connected to the brushless motor 30, two rechargeable batteries 62 described later, and an internal switch (not shown) described later via an electric member such as a lead wire (not shown) and a capacitor 25. It is electrically connected. In the lower space 20f partitioned between the outer periphery 30a of the brushless motor 30 and the inner periphery 20c of the motor housing 20 via the rib 20d, electric components such as these lead wires and the capacitor 25 are accommodated. There is. The brushless motor 30 and the controller 70 can be attached to and removed from the inside of the motor housing 20 from the opening 20 a side of the motor housing 20.

On the other hand, a first grip 51 is formed at a position closer to the front of the handle housing 22 so that the operator swings the cutting machine body 3 in the vertical direction. Further, a trigger 53 that can be pulled and operated while the operator's hand grips the first grip portion 51 is provided at a position closer to the front of the handle housing 22. When the trigger 53 is pulled, a predetermined signal (for example, a switch ON signal) is transmitted from an internal switch operating according to the pulling operation to a controller 70 described later.

Further, a second grip portion 52 to be gripped by the operator for carrying the stationary cutting machine 1 is formed at a rear position of the handle housing 22. When the operator carries the stationary cutting machine 1, the lock pin 26 provided on the main body support 23 is slid leftward to fix the cutting machine 3 at the bottom dead center. The lock pin 26 is in the shape of a rod and is inserted into a left and right hole (not shown) provided on the rear of the main body support 23. In the state where the lock pin 26 is slid to the right, the cutting machine main body 3 can be freely swung up and down, but when it is slid to the left, it is completely slid because it has a positional relationship that interferes with the support connecting part 16 I can not do it. However, in the state where the cutting machine main body 3 is at the bottom dead center, the main body support 23 passes a position above the upper end of the support connection 16, so that the lock pin 26 can be slid to the left. Thereafter, when the downward force on the cutting machine main body 3 is released, the cutting machine main body 3 rises upward (the lock pin 26 is lowered downward), and the lock pin 26 and the support connection portion 16 abut each other. The bottom dead center state is maintained.

Further, behind the handle housing 22, a main body support 23 made of metal (for example, made of aluminum) is provided. The main body support portion 23 is provided with a part of a rectangular battery mounting base 60 made of synthetic resin. The battery mounting base 60 is connected to the side opposite to the side where sparks (not shown) are generated when the cutting stone 3 a in the main body support 23 cuts the material to be cut. When the battery mounting base 60 is connected in this manner, the main body support 23 shields the spark from the battery mounting base 60. Of course, since the main body support 23 is a member for supporting the cutting machine main body 3, it is set wide enough from the viewpoint of strength. As a result, as described later, the two rechargeable batteries 62 mounted on the battery mounting base 60 can be shielded from sparks.

The battery mounting base 60 is connected to the side of the main body support 23 opposite to the cutting stone 3 a so that the longitudinal direction of the battery mounting base 60 and the longitudinal direction of the handle housing 22 coincide with each other. The battery mounting base 60 is provided with two battery mounting portions 61 along the longitudinal direction. A rectangular parallelepiped rechargeable battery 62 long in one direction can be attached to each of the two battery attachment parts 61. The rechargeable battery 62 is mounted by moving parallel to its longitudinal direction. The two rechargeable batteries 62 can be mounted such that the longitudinal direction of the rechargeable battery 62 is perpendicular to the longitudinal direction (front-rear direction) of the handle housing 22. Therefore, the mounting direction of the rechargeable battery 62 is also perpendicular to the longitudinal direction of the handle housing 22. In addition, the battery mounting portion 61 is provided with a terminal for electrically connecting to the terminal of the rechargeable battery 62. The battery mounting base 60 is also partially connected to the handle housing 22, and electrically connected from the terminals to circuits in the handle housing 22 via leads.

The battery mounting base 60 is provided on the main body support 23 so that the mounting surfaces 60 a of the two rechargeable batteries 62 are opposite to the surface facing the upper surface 23 a of the main body support 23. (See Figure 1). That is, the battery mounting base 60 is provided on the main body support 23 such that the opposite mounting surfaces 60 b of the two rechargeable batteries 62 are surfaces facing the upper surface 23 a of the main body support 23.

The mounting of the rechargeable battery 62 is a sliding mounting of the rechargeable battery 62 from the left to the right with respect to the battery mounting portion 61. When the rechargeable battery 62 is attached to the battery attachment portion 61, the rechargeable battery 62 is locked to the battery attachment portion 61 via the engagement claws (not shown). There is. Therefore, when the lock release button 63 of the rechargeable battery 62 is pressed, the lock of the engagement claw is released, and the rechargeable battery 62 is slid from the right side to the left side from the battery attachment portion 61 and removed. be able to. The cutting machine body 3 is configured in this manner.

The main body support portion 23 of the cutting machine main body 3 and the support connection portion 16 of the base 2 configured as described above are rotatably (swayably) assembled via the support shaft 18. Thereby, the cutting machine main body 3 can be rocked with respect to the base 2. At this time, a spring (for example, a torsion spring not shown) is held between the main body support 23 and the support connection 16. Thereby, the cutter main body 3 can be held at the upper position with respect to the base 2 in the normal state (see FIGS. 1 and 2). The stationary cutting machine 1 is configured as described above.

Subsequently, the operation of the stationary cutting machine 1 configured as described above will be described. When the operator's hand pulls the trigger 53 of the handle housing 22, a predetermined signal is transmitted from the internal switch to the controller 70. Then, power is supplied to the brushless motor 30 from the two rechargeable batteries 62, and the rotating shaft 35 is driven (rotated). As a result, the power is transmitted to the output shaft 44 through the first gear 39 and the second gear 47, so that the cutting grindstone 3a is rotated by this transmission. Therefore, when the cutting machine body 3 is swung downward, the workpiece held on the table surface 2 a of the base 2 can be cut. At this time, the lower side of the cutting grindstone 3 a is in a state of entering into the slit 15 of the table surface 2 a of the base 2.

At this time, the centrifugal fan 40 also rotates with the rotary shaft 35 to be driven, so the air sucked from the first air window 42 of the motor housing 20 passes through the inside of the brushless motor 30 to cool the brushless motor 30. After that, it is fed to the gear housing 21 by the fan guide 43. Since the brushless motor 30 is thus cooled, this air is referred to as "first cooling air W1." The first air window 42 and the brushless motor 30 are in an adjacent positional relationship (see FIG. 7). Therefore, the brushless motor 30 can be cooled immediately by the air (cold outside air) just sucked from the first air window 42. Therefore, the cooling efficiency can be enhanced.

At this time, air is also drawn from the second air window 41 of the motor housing 20 by the negative pressure generated by the centrifugal fan 40. The sucked air passes through the inside of the controller 70 to cool the control processing device and the bridge circuit device, and then joins on the left side (upstream side) of the centrifugal fan 40, and the combined wind is the gear housing by the fan guide 43. Sent to 21 Since the controller 70 is thus cooled, this air is referred to as "second cooling air W2". The second air window 41 and the controller 70 are in an adjacent positional relationship (see FIG. 7). Therefore, the controller 70 can be immediately cooled by the air (cold outside air) just sucked from the second air window 41. Therefore, the cooling efficiency can be enhanced.

Further, most of the first cooling air W1 and the second cooling air W2 sent to the gear housing 21 are blown out into the fixed cover 49. Then, most of the first cooling air W1 and the second cooling air W2 blown out merge with an air flow (not shown) generated as the cutting wheel 3a rotates and are formed on the right side of the fixed cover 49. It is discharged from the exhaust port (not shown).

The stationary cutting machine 1 according to the first embodiment of the present invention is configured as described above. According to this configuration, as in the prior art, the power of the brushless motor 30 is supplied from the two rechargeable batteries 62. Therefore, the use of the stationary cutting machine 1 is not restricted by the working environment regarding the power supply. Therefore, the usability of the stationary cutting machine 1 can be enhanced. Moreover, according to this configuration, the two rechargeable batteries 62 are shielded from sparks by a part of the cutting machine main body 3 (for example, the main body support portion 23). Therefore, it is not necessary for the worker to pay special attention when cutting work.

Moreover, according to this configuration, the two rechargeable batteries 62 are shielded from sparks by the main body support portion 23, for example. The main body support portion 23 is a member for supporting the cutting machine main body 3, and therefore, is set wide enough from the viewpoint of strength. Therefore, protection from sparks on the two rechargeable batteries 62 can be reliably implemented.

Further, according to this configuration, a rectangular battery mounting base 60 on which two rechargeable batteries 62 can be mounted is provided above the main body support 23. When the battery mounting base 60 is provided above the main body support 23 as described above, the two rechargeable batteries 62 can also be disposed above the main body support 23. Therefore, the spark does not go around the two rechargeable batteries 62. Therefore, spark protection for the two rechargeable batteries 62 can be implemented more reliably.

Further, according to this configuration, a substantially U-shaped spark chute 17 is provided at the rear end of the table surface 2a of the base 2 to prevent the sparks from being generated when the cutting stone 3a cuts the workpiece. There is. Therefore, it is possible to prevent sparks from scattering around the stationary cutting machine 1.

Further, according to this configuration, the battery mounting base 60 is configured such that the mounting surface 60 a of the two rechargeable batteries 62 is the surface opposite to the surface facing the upper surface 23 a of the main body support 23. Provided at 23. Therefore, the two rechargeable batteries 62 are positioned on the opposite side (rear side) of the main body support 23 with the battery mounting base 60 as a boundary. Therefore, the workability of attaching and detaching the two rechargeable batteries 62 to and from the battery mounting base 60 can be enhanced. Although two rechargeable batteries are shown in the present embodiment, the size and positional relationship of the rechargeable battery, the battery mounting base, or the main body support may be adjusted even if one or three or more rechargeable batteries are used. The same effect can be achieved by

Second Embodiment
Next, a second embodiment of the present invention will be described using FIG. The stationary cutting machine 101 according to the second embodiment has a simplified structure as compared to the stationary cutting machine 1 according to the first embodiment described above. In the following description, members having the same or equivalent configurations as those in the first embodiment are denoted by the same reference numerals in the drawings, and redundant description will be omitted. The same applies to all the embodiments described later.

The stationary cutting machine 101 of the second embodiment has a configuration in which the spark chute 17 is removed from the stationary cutting machine 1 of the first embodiment (see FIG. 9). With such a configuration, the structure of the stationary cutting machine 101 can be simplified. The rest of the configuration of the stationary cutting machine 101 of the second embodiment is the same as that of the stationary cutting machine 1 of the first embodiment. Therefore, also in the second embodiment, the same function and effect as the first embodiment can be obtained.

Third Embodiment
Next, a third embodiment of the present invention will be described using FIG. As compared with the stationary cutting machine 1 of the first embodiment described above, the stationary cutting machine 201 of the third embodiment has a configuration in which the direction of the battery mounting base 60 with respect to the main body support 23 is changed. That is, in the stationary cutting machine 201 according to the third embodiment, the battery mounting base 60 has a main body such that the mounting surfaces 60 a of the two rechargeable batteries 62 face the upper surface 23 a of the main body support 23. It is the structure provided in the support part 23 (refer FIG. 10).

Because of such a configuration, the two rechargeable batteries 62 are directed to the main body support 23 side (front side) with respect to the battery mounting base 60. Therefore, the battery mounting base 60 also serves as a rear cover (protective material). Therefore, even if an external impact acts from the rear side when using the stationary cutting machine 201 of the third embodiment, the two rechargeable batteries 62 can be protected. The rest of the configuration of the stationary cutting machine 201 according to the third embodiment is the same as the configuration of the stationary cutting machine 1 according to the first embodiment. Therefore, the stationary cutting machine 201 of the third embodiment can obtain the same function and effect as the stationary cutting machine 1 of the first embodiment. Although this embodiment also shows two rechargeable batteries, the size and positional relationship of rechargeable batteries, battery mounting base, or main body support should be matched even if one or three or more batteries are used. The same effect can be achieved by

Fourth Embodiment
Next, a fourth embodiment of the present invention will be described using FIG. The stationary cutting device 301 according to the fourth embodiment has a configuration in which the orientation of the battery mounting base 60 with respect to the main body support 23 is changed as compared with the stationary cutting device 1 according to the first embodiment described above. That is, in the stationary cutting machine 301 according to the fourth embodiment, the battery mounting base 60 has the mounting surface 60 a of the two rechargeable batteries 62 orthogonal to the top surface 23 a of the main body support 23, and The main body support 23 is provided so as to face the projecting side (left side) of the brushless motor 30 (see FIG. 11).

Therefore, the mounting operation of the rechargeable battery 62 can be easily performed from the projecting side of the brushless motor 30. The rest of the configuration of the stationary cutting machine 301 according to the fourth embodiment is the same as the configuration of the stationary cutting machine 1 according to the first embodiment. Therefore, the same advantages as the stationary cutting device 1 of the first embodiment can be obtained even with the stationary cutting device 301 of the fourth embodiment. Although this embodiment also shows two rechargeable batteries, the size and positional relationship of rechargeable batteries, battery mounting base, or main body support should be matched even if one or three or more batteries are used. The same effect can be achieved by

Fifth Embodiment
Next, a fifth embodiment of the present invention will be described using FIG. The stationary cutting device 401 of the fifth embodiment has a configuration in which the orientation of the battery mounting base 60 with respect to the main body support 23 is changed as compared with the stationary cutting device 1 of the first embodiment described above. That is, in the stationary type cutting machine 401 of the fifth embodiment, the battery mounting base 60 has the mounting surface 60 a of the two rechargeable batteries 62 orthogonal to the top surface 23 a of the main body support 23, and The main body support 23 is provided so as to face the opposite side (right side) of the projecting side of the brushless motor 30 (see FIG. 12).

Therefore, the mounting operation of the rechargeable battery 62 can be easily performed from the side opposite to the projecting side of the brushless motor 30. The rest of the configuration of the stationary cutting device 401 of the fifth embodiment is the same as that of the stationary cutting device 1 of the first embodiment. Therefore, the same advantages as the stationary cutting device 1 of the first embodiment can be obtained even with the stationary cutting device 401 of the fifth embodiment. Although this embodiment also shows two rechargeable batteries, the size and positional relationship of rechargeable batteries, battery mounting base, or main body support should be matched even if one or three or more batteries are used. The same effect can be achieved by

Sixth Embodiment
Next, a sixth embodiment of the present invention will be described using FIG. As compared with the stationary cutting device 1 of the first embodiment described above, the stationary cutting device 501 of the sixth embodiment has a form in which the battery mounting base 60 is compact in a side view. That is, in the stationary cutting machine 501 of the sixth embodiment, the battery mounting base 60 is arranged such that the mounting surface 60a of one rechargeable battery 62 is orthogonal to the top surface 23a of the main body support portion 23, and Further, the mounting surface 60 a of the other rechargeable battery 62 is orthogonal to the upper surface 23 a of the main body support 23 so that the extending side (left side) of the brushless motor 30 faces, and It has a configuration provided on the main body support 23 so as to face the opposite side (right side) of the projecting side (see FIG. 13). Further, the mounting directions of the two rechargeable batteries 62 with respect to the battery mounting base 60 are set to face forward and downward at the top dead center. In addition, it is set to be substantially downward at the bottom dead center. Specifically, it is inclined slightly backward with respect to the vertically downward direction.

Because of this configuration, the two rechargeable batteries 62 overlap in the left-right direction. Therefore, the battery mounting base 60 can be made compact in the side view of the stationary cutting machine 501 of the sixth embodiment. Further, since the mounting direction of the two rechargeable batteries 62 is set to be substantially downward, the workability of the mounting operation from the substantially upper side of the rechargeable battery 62 can be enhanced. In the stationary cutting device 501 of the sixth embodiment, the configuration other than these is the same as the configuration of the stationary cutting device 1 of the first embodiment. Therefore, the same advantages as the stationary cutting device 1 of the first embodiment can be obtained even with the stationary cutting device 501 of the sixth embodiment.

Seventh Embodiment
Next, a seventh embodiment of the present invention will be described using FIG. The stationary cutting device 601 of the seventh embodiment is different from the stationary cutting device 501 of the sixth embodiment described above in that the mounting directions of the two rechargeable batteries 62 with respect to the battery mounting base 60 are changed. It has become. That is, in the stationary cutting machine 601 according to the seventh embodiment, the mounting directions of the two rechargeable batteries 62 with respect to the battery mounting base 60 are set to be directed to a direction slightly inclined forward from above at the top dead center. ing. Further, it is set to be substantially forward at the bottom dead center (see FIG. 14). Specifically, it is inclined slightly upward with respect to the horizontal.

With such a configuration, it is possible to enhance the workability of the mounting operation from substantially below the rechargeable battery 62. In the stationary cutting device 601 of the seventh embodiment, the configuration other than these is the same as the configuration of the stationary cutting device 501 of the sixth embodiment. Therefore, the same advantages as the stationary cutting device 501 of the sixth embodiment can be obtained even with the stationary cutting device 601 of the seventh embodiment.

Eighth Embodiment
Next, an eighth embodiment of the present invention will be described using FIG. As compared with the stationary cutting machine 1 of the first embodiment described above, the stationary cutting machine 701 of the eighth embodiment has a mode in which the mounting direction of the two rechargeable batteries 62 with respect to the battery mounting base 60 is changed. It has become. That is, in the stationary cutting machine 701 of the eighth embodiment, the longitudinal directions of the two rechargeable batteries 62 mounted to the battery mounting base 60 are set to be inclined with respect to the support shaft 18 . Specifically, at the top dead center, the battery mounting base 60 is in a state of being slightly forwardly inclined to the upper portion of the main body support 23, and the rechargeable battery 62 is mounted on the right and above on that. . At the bottom dead center, it is mounted to the right and to the front.

With such a configuration, it is possible to shorten the width (length in the horizontal direction) of the mounting space required when mounting the two rechargeable batteries 62. The rest of the configuration of the stationary cutting machine 701 according to the eighth embodiment is the same as that of the stationary cutting machine 1 according to the first embodiment. Therefore, the same advantages as the stationary cutting device 1 of the first embodiment can be obtained even with the stationary cutting device 701 of the eighth embodiment.

The ninth embodiment
Next, a ninth embodiment of the present invention will be described with reference to FIGS. The stationary cutting device 801 of the ninth embodiment is different from the stationary cutting device 201 of the third embodiment described above in that the mounting directions of the two rechargeable batteries 62 with respect to the battery mounting base 60 are changed. It has become.

Unlike the second gripping portion 52 of the third embodiment, the second gripping portion 52 of the stationary cutting machine 801 of the ninth embodiment is formed so as not to form a loop (FIGS. 16 to 17). reference). That is, unlike the second gripping portion 52 of the third embodiment, the second gripping portion 52 of the stationary cutting machine 801 of the ninth embodiment is located on the opposite side of the first gripping portion 51 along the handle housing 22. It is formed to overhang. Also, unlike the battery mounting base 60 of the third embodiment, the battery mounting base 60 of the ninth embodiment is configured to be provided at the tip 52 a of the second grip portion 52.

The battery mounting base 60 according to the ninth embodiment is different from the battery mounting base 60 according to the third embodiment in that the lock release button 63 of the rechargeable battery 62 rotates 90 ° so that the lock release button 63 faces the first grip 51 side. It is provided in a state where it is made to Therefore, also in the stationary cutting machine 801 of the ninth embodiment, the mounting surface 60a of the battery mounting base 60 is at the bottom dead center, like the stationary cutting machine 201 of the third embodiment. It is provided at the top (see FIG. 18). Further, at the bottom dead center, the mounting direction of the two rechargeable batteries 62 is backward (see FIG. 19).

The stationary cutting machine 801 of the ninth embodiment of the present invention is configured as described above. With such a configuration, the mounting direction of the two rechargeable batteries 62 is backward, so for the operator, the mounting and dismounting of the two rechargeable batteries 62 from the position on the front side of the stationary cutting machine 801 It is easy to Therefore, it is possible to enhance the attachment (workability of attachment and detachment) of the two rechargeable batteries 62 from the front position.

The rest of the configuration of the stationary cutting machine 801 according to the ninth embodiment is the same as the configuration of the stationary cutting machine 201 according to the third embodiment. Therefore, also in the stationary cutting machine 801 of the ninth embodiment, as in the stationary cutting machine 201 of the third embodiment, the two rechargeable batteries 62 are a part of the cutting machine main body 3 (for example, the main body It is shielded from sparks by the support portion 23). Therefore, it is not necessary for the worker to pay special attention when performing the cutting operation. Further, in the stationary cutting machine 801 of the ninth embodiment, the battery mounting base 60 doubles as a rear cover (protective material) as in the stationary cutting machine 201 of the third embodiment. Therefore, even if an external impact acts from the rear side when using the stationary cutting machine 801, the two rechargeable batteries 62 can be protected.

Tenth Embodiment
Next, a tenth embodiment of the present invention will be described with reference to FIGS. The stationary cutting device 901 of the tenth embodiment is different from the stationary cutting device 801 of the ninth embodiment described above in that the mounting directions of the two rechargeable batteries 62 with respect to the battery mounting base 60 are changed. It has become.

Unlike the second gripping portion 52 of the ninth embodiment, the second gripping portion 52 of the stationary type cutting machine 901 of the tenth embodiment is formed to form a loop (see FIGS. 20 to 21). Further, unlike the battery mounting base 60 of the ninth embodiment, the battery mounting base 60 of the tenth embodiment is provided with a mounting portion 52b formed integrally with the second grip portion 52. It has become.

Unlike the battery mounting base 60 of the ninth embodiment, the battery mounting base 60 of the tenth embodiment is 180 ° so that the lock release button 63 of the rechargeable battery 62 faces the first gripping portion 51 side. It is provided in a rotated state. Therefore, in the stationary cutting machine 901 according to the tenth embodiment, the mounting surface 60a of the battery mounting base 60 is at the bottom dead center, as in the stationary cutting machine 801 according to the ninth embodiment. It is provided at the top (see FIG. 22). Also, at the bottom dead center, the mounting direction of the two rechargeable batteries 62 is forward (see FIG. 23).

The stationary cutting machine 901 according to the tenth embodiment of the present invention is configured as described above. With such a configuration, the mounting direction of the two rechargeable batteries 62 is forward, so for the operator, mounting of the two rechargeable batteries 62 from the position on the rear side of the stationary cutting machine 801 or It becomes easy to remove. Therefore, it is possible to enhance the attachment (operability of attachment and detachment) of the two rechargeable batteries 62 from the rear side position.

The rest of the configuration of the stationary cutting machine 901 according to the tenth embodiment is the same as the configuration of the stationary cutting machine 801 according to the ninth embodiment. Therefore, also in the stationary cutting machine 901 of the tenth embodiment, as in the stationary cutting machine 801 of the ninth embodiment, the two rechargeable batteries 62 are a part of the cutting machine main body 3 (for example, the main body It is shielded from sparks by the support portion 23). Therefore, it is not necessary for the worker to pay special attention when performing the cutting operation. Further, in the stationary cutting machine 901 according to the tenth embodiment, as with the stationary cutting machine 801 according to the ninth embodiment, the battery mounting base 60 doubles as a rear cover (protective material). Therefore, even when an external impact is applied from the rear side when using the stationary cutting machine 901, the two rechargeable batteries 62 can be protected.

Eleventh Embodiment
Next, an eleventh embodiment of the present invention will be described with reference to FIGS. The stationary cutting machine 1001 of the eleventh embodiment has a configuration in which the position of the battery mounting base 60 is changed as compared with the stationary cutting machine 201 of the third embodiment described above.

Unlike the second gripping portion 52 of the third embodiment, the second gripping portion 52 of the stationary cutting machine 1001 of the eleventh embodiment is formed so as not to form a loop (FIGS. 24 to 26). reference). That is, unlike the second gripping portion 52 of the stationary cutting machine 201 of the third embodiment, the second gripping portion 52 of the stationary cutting machine 1001 of the eleventh embodiment is the first gripping along the handle housing 22. It is formed to project toward the opposite side of the portion 51. The protruding second grip portion 52 has a shape in which a midway portion of the second grip portion 52 is bent so that the tip end 52a of the second grip portion 52 faces the left (see FIG. 27).

A battery mounting base 60 is provided at the bent tip 52 a so as to have the same posture as the battery mounting base 60 of the third embodiment. Due to such provision, the battery mounting base 60 of the eleventh embodiment is positioned leftward with respect to the handle housing 22 with a space as compared with the battery mounting base 60 of the third embodiment. It will be provided (see FIG. 27). That is, as is clear from FIG. 27, the entire two rechargeable batteries 62 of the eleventh embodiment are different from the handle housing 22 as compared to the two rechargeable batteries 62 of the third embodiment. It is provided at a position shifted to the side opposite to the cutting stone 3a (left side) with space left.

Further, as it is provided in this manner, the battery mounting base 60 of the eleventh embodiment is provided to be positioned closer to the front as compared with the battery mounting base 60 of the third embodiment. Become. That is, as compared with the two rechargeable batteries 62 of the third embodiment, the two rechargeable batteries 62 of the eleventh embodiment are provided at positions deviated toward the front. Moreover, since it provides in this way, the mounting surface 60a of the battery mounting base 60 turns into a surface which opposes the upper surface 23a of the main-body support part 23 (refer FIG. 24). Moreover, since it is provided in this way, the mounting direction of the two rechargeable batteries 62 is directed to the cutting wheel 3a (rightward).

The stationary cutting machine 1001 according to the eleventh embodiment of the present invention is configured as described above. According to this structure, the two rechargeable batteries 62 are provided at positions offset from the handle housing 22 with respect to the handle housing 22 with respect to the side opposite to the cutting stone 3a. Therefore, the spark generated when the cutting grindstone 3a cuts the material to be cut does not reach the two rechargeable batteries 62. Therefore, in the stationary cutting machine 1001 according to the eleventh embodiment as well, like the stationary cutting machine 201 according to the third embodiment, the two rechargeable batteries 62 are part of the cutting machine main body 3 (for example, the main body The same effect as that of shielding from sparks can be obtained by the support portion 23). As a result, it is not necessary for the worker to pay special attention when cutting work.

In addition, since the mounting direction of the two rechargeable batteries 62 is directed to the cutting wheel 3a (rightward), the operator can attach or remove the two rechargeable batteries 62 from the position on the left side of the stationary cutting machine 1001. It becomes easy to do. Therefore, it is possible to enhance the attachment (operability of attachment and detachment) of the two rechargeable batteries 62 from the left position. Further, in the stationary cutting machine 1001 according to the eleventh embodiment, the battery mounting base 60 doubles as a rear cover (protective material) as in the stationary cutting machine 201 according to the third embodiment. Therefore, even when an external impact is applied from the rear side when using the stationary cutting machine 1001, the two rechargeable batteries 62 can be protected.

(Twelfth embodiment)
Next, a twelfth embodiment of the present invention will be described using FIGS. The stationary cutting device 1101 of the twelfth embodiment is different from the stationary cutting device 1 of the first embodiment described above in that the position of the battery mounting base 60 is changed.

In a portion (upper part of the motor housing 20 in FIG. 30) adjacent to the second grip portion 52 on the outer peripheral surface of the motor housing 20, the battery mounting base is configured to have the same posture as the battery mounting base 60 of the first embodiment. 60 are provided. The battery mounting base 60 and the motor housing 20 are formed integrally. As such, the battery mounting base 60 of the twelfth embodiment is provided above the motor housing 20 at the bottom dead center (see FIGS. 30 to 31). That is, as is apparent from FIGS. 30 to 31, two rechargeable batteries 62 are provided above the motor housing 20 at the bottom dead center.

As such, the battery mounting base 60 of the twelfth embodiment is provided to be positioned to the left as compared to the battery mounting base 60 of the first embodiment (see FIG. 31). That is, as is clear from FIG. 31, the two rechargeable batteries 62 of the twelfth embodiment are provided to be positioned to the left as compared to the two rechargeable batteries 62 of the first embodiment. ing. Further, since it is provided in this manner, the battery mounting base 60 of the twelfth embodiment is provided to be positioned closer to the front as compared with the battery mounting base 60 of the first embodiment. Become. That is, the two rechargeable batteries 62 of the twelfth embodiment are provided closer to the front as compared with the two rechargeable batteries 62 of the first embodiment.

Further, since the battery mounting base 60 is provided in this manner, the mounting surface 60 a of the battery mounting base 60 is the surface opposite to the surface facing the upper surface 23 a of the main body support portion 23. Further, because of this provision, the mounting direction of the two rechargeable batteries 62 is directed to the cutting wheel 3a (rightward) (see FIGS. 28 to 30). Moreover, since it is provided in this way, the mounting direction of the two rechargeable batteries 62 is directed to the cutting wheel 3a (rightward).

The stationary cutting machine 1101 of the twelfth embodiment of the present invention is configured as described above. With this configuration, the portion (upper part of the motor housing 20 in FIG. 30) adjacent to the second grip 52 on the outer peripheral surface of the motor housing 20 is the same as the battery mounting base 60 of the first embodiment. A battery mounting base 60 is provided to form a posture. That is, the two rechargeable batteries 62 are provided above the motor housing 20 at the bottom dead center. That is, the two rechargeable batteries 62 of the twelfth embodiment are provided to be positioned to the left as compared with the two rechargeable batteries 62 of the first embodiment. Therefore, the spark generated when the cutting grindstone 3a cuts the material to be cut does not reach the two rechargeable batteries 62. Therefore, in the stationary cutting machine 1101 of the twelfth embodiment as well, like the stationary cutting machine 1 of the first embodiment, the two rechargeable batteries 62 are part of the cutting machine main body 3 (for example, the main body The same effect as that of shielding from sparks can be obtained by the support portion 23). As a result, it is not necessary for the worker to pay special attention when cutting work.

In addition, since the mounting direction of the two rechargeable batteries 62 is directed to the cutting wheel 3a (rightward), the operator can attach or remove the two rechargeable batteries 62 from the position on the left side of the stationary cutting machine 1101. It becomes easy to do. Therefore, it is possible to enhance the attachment (operability of attachment and detachment) of the two rechargeable batteries 62 from the left position. Further, since the battery mounting base 60 and the motor housing 20 are integrally formed, it is not necessary to form the battery mounting base 60 and the motor housing 20 separately. Therefore, the structure of the stationary cutting machine 1101 can be simplified.

The above-described content relates to only one embodiment of the present invention, and does not mean that the present invention is limited to the above-described content.

In each embodiment, the "cutting stone 3a" and the "brushless motor 30" have been described as examples of the "rotating blade" and the "electric motor". However, the present invention is not limited to this, and the "rotating blade" may be a "tip saw". Moreover, in each embodiment, the example in which two rechargeable batteries 62 are provided has been described. However, the number is not limited to this, and any number (one or three) may be used.

Claims

The rotary blade is rotated to cut the material to be cut, and the rotary blade is provided with an electric motor driven to generate rotational force, and a rechargeable battery for supplying power to the electric motor. A metalworking stationary cutting machine,
The metalworking static cutting machine is arranged such that the rechargeable battery is shielded from sparks generated when the rotary blade cuts the workpiece.
A metalworking stationary cutting machine according to claim 1, wherein
It has a base on which the material to be cut can be placed on the upper surface, and a cutting machine main body having the rotary blade.
The base has a support connection on the upper surface of the base.
The cutting machine main body has a main body support portion for vertically rocking itself with respect to the base via a support shaft provided in the support connection portion,
The stationary cutting machine for metalworking in which the shielding is performed by the main body support.
A metalworking stationary cutting machine according to claim 2, wherein
A metalworking stationary cutting machine, wherein a battery mounting base on which the rechargeable battery can be mounted is provided on the side opposite to the rotary blade with respect to the body support.
A metalworking stationary cutting machine according to any one of claims 2 to 3, wherein
The metalworking stationary cutting machine is provided with a spark chute for preventing scattering of the sparks on the base.
A metalworking stationary cutting machine according to any one of claims 3 to 4, wherein
The metalworking fixed type cutting machine according to claim 1, wherein the battery mounting base is provided on the main body support such that the mounting surface of the rechargeable battery is a surface opposite to the surface facing the upper surface of the main body support.
A metalworking stationary cutting machine according to any one of claims 3 to 4, wherein
The metalworking fixed type cutting machine according to claim 1, wherein the battery mounting base is provided on the main body support such that the mounting surface of the rechargeable battery faces the top surface of the main body support.
A metalworking stationary cutting machine according to any one of claims 3 to 4, wherein
The battery mounting base is provided on the metal support portion such that the mounting surface of the rechargeable battery is orthogonal to the top surface of the main body support portion and faces the projecting side of the electric motor. Stationary cutting machine.
A metalworking stationary cutting machine according to any one of claims 3 to 4, wherein
The battery mounting base is provided on the main body support such that the mounting surface of the rechargeable battery is orthogonal to the top surface of the main body support and faces the opposite side of the electric motor on the projecting side. Metalworking stationary cutting machine.
A metalworking stationary cutting machine according to any one of claims 3 to 4, wherein
A plurality of the rechargeable batteries are mounted,
In the battery mounting base, the mounting surface of the single rechargeable battery may be orthogonal to the top surface of the main body support and may face the projecting side of the electric motor. The mounting surface of each rechargeable battery is provided on the main body support so as to be orthogonal to the upper surface of the main body support and to face the opposite side of the projecting side of the electric motor.
The metalworking fixed cutting machine, wherein the mounting direction of the rechargeable battery with respect to the battery mounting base is set to be substantially downward at a bottom dead center.
A metalworking stationary cutting machine according to any one of claims 3 to 4, wherein
A plurality of the rechargeable batteries are mounted,
In the battery mounting base, the mounting surface of the single rechargeable battery may be orthogonal to the top surface of the main body support and may face the projecting side of the electric motor. The mounting surface of each rechargeable battery is provided on the main body support so as to be orthogonal to the upper surface of the main body support and to face the opposite side of the projecting side of the electric motor.
A metalworking stationary cutting machine, wherein a mounting direction of the rechargeable battery with respect to the battery mounting base is set to be substantially forward at a bottom dead center.
A metalworking stationary cutting machine according to any one of claims 3 to 4, wherein
A metalworking stationary cutting machine, wherein a longitudinal direction of the rechargeable battery mounted to the battery mounting base is set to be inclined with respect to the support shaft.
A metalworking stationary cutting machine according to claim 1, wherein
At the bottom dead center, the mounting surface of the battery mounting base on which the rechargeable battery is mounted is provided above the main body support, and the mounting direction of the rechargeable battery is directed backward. .
A metalworking stationary cutting machine according to claim 1, wherein
At the bottom dead center, the mounting surface of the battery mounting base on which the rechargeable battery is mounted is provided above the main body support, and the mounting direction of the rechargeable battery is forwardly fixed. .
A metalworking stationary cutting machine according to claim 1, wherein
The metal-working fixed-type cutting machine according to the present invention, wherein the rechargeable battery is disposed at a position offset to the opposite side of the rotating blade with a space in relation to the handle housing.
A metalworking stationary cutting machine according to claim 1, wherein
The rechargeable battery is provided at the bottom dead center above the motor housing, and the mounting surface of the battery mounting base on which the rechargeable battery is mounted is opposite to the surface facing the upper surface of the main body support. As a face,
The metalworking stationary cutting machine is arranged such that the mounting direction of the rechargeable battery is directed to the rotary blade.
The rechargeable battery is a stationary cutting machine for metalworking, the whole of which is disposed at a position opposite to the rotating blade with a space relative to the handle housing.
17. A metalworking stationary cutting machine according to claim 16, wherein:
The mounting surface of the battery mounting base on which the rechargeable battery is mounted is a surface facing the upper surface of the main body support, and the mounting direction of the rechargeable battery is directed to the rotary blade.
The rechargeable battery is provided at the bottom dead center above the motor housing, and the mounting surface of the battery mounting base on which the rechargeable battery is mounted is a surface opposite to the surface facing the upper surface of the main body support. ,
The metalworking stationary cutting machine is arranged such that the mounting direction of the rechargeable battery is directed to the rotary blade.
A metalworking stationary cutting machine according to claim 15 or 18,
A metalworking stationary cutting machine, wherein a mounting base for mounting the rechargeable battery and the motor housing are integrally formed.