WO2015005087A1

WO2015005087A1 - Cutting tool

Info

Publication number: WO2015005087A1
Application number: PCT/JP2014/066285
Authority: WO
Inventors: 佳弘木村; 可児　利之; 修司青山
Original assignee: 株式会社マキタ
Priority date: 2013-07-09
Filing date: 2014-06-19
Publication date: 2015-01-15
Also published as: JP2015016514A

Abstract

Table-top cutting tools which support a cutting machine body so as to allow vertical tilting operations and forward and backward sliding operations relative to the table where the cutting material is placed are cumbersome to operate because a fixing screw must be rotated in order to fix the sliding position of a conventional cutting machine body. In the present invention, it is possible to fix the sliding position of the cutting machine body with an operation simpler than operation of a fixing screw. By removing or inserting a lock pin (31) provided on the side of the table (2) out of or into a lock hole (32) provided on a slider (13) on the side of the cutting machine body (10), the sliding position of the cutting machine body (10) is locked or unlocked. Since the sliding position of the cutting machine body (10) can be locked and unlocked by the simple operation of pinching and moving the lock pin (31) in the axial direction, operability is improved compared to configurations involving a conventional fixing screw.

Description

Cutting tool

This invention relates to a desktop cutting tool called, for example, a slide marnoco.

A technique related to a desktop cutting tool is disclosed in a patent document (Japanese Patent Laid-Open No. 2005-279934). This cutting tool includes a table on which a cutting material is placed, and a cutting machine body supported so as to be movable up and down with respect to the table and slidable along the table surface. The cutting machine body is driven by an electric motor. As a circular cutting blade.

According to this cutting tool, the cutting machine body is moved downward with respect to the cutting material fixed on the table surface to cut the cutting blade, or in the cutting state, the cutting machine body is further slid in the table surface direction. Cutting material can be cut.

However, since the conventional general tabletop-type cutting tool uses a fixing screw as a means (slide lock) for fixing the slide position of the cutting machine body, the slide position of the cutting machine body is fixed. When performing the operation and releasing the fixed state, an operation of rotating the fixing screw is required. In this respect, the operation is troublesome and needs to be improved.

The present invention has been made in view of the conventional problems, and an object thereof is to improve the operability of the operation of fixing the slide position of the cutting machine body and the operation of releasing the fixed state.

The above problems are solved by the following invention. 1st invention is a table-type cutting tool provided with the table which mounts a cutting material, and the cutting machine main body supported so that it can be moved up and down above the cutting material, and can be slid in the surface direction of a table. is there. The cutting tool includes a slide lock device for fixing the slide position of the cutting machine body. The slide lock device includes a contact member on one of the slide support side member and the slide side member and a contacted portion on which the contact member is contacted on the other, and the contact member is a contacted portion. It is possible to fix the slide position of the cutting machine main body by being brought into contact with the blade, and to be able to release the fixed position of the cutting machine main body by releasing the contact member from the contacted portion. The abutting member is a cutting tool configured to be moved and moved (inserted / removed) in an axial direction intersecting the sliding direction to be brought into contact with and separated from the contacted portion.

According to the first aspect of the present invention, the sliding position of the cutting machine body can be fixed by moving the abutting member in the axial direction and inserting / removing the abutting member. Thus, the slide position of the cutting machine body can be fixed by a simpler operation than the troublesome operation of rotating the conventional fixing screw, and in this respect, the operability of the cutting tool can be improved.

The second invention is a cutting tool according to the first invention, wherein the abutting member can be held at the unlocked position separated from the abutted portion. According to the second aspect of the present invention, once the user moves the contact member to the unlock position, the contact member can be held at the unlock position without the user holding it by hand. In this respect, the operability of the cutting tool can be further enhanced.

The third invention is a cutting tool which is elastically biased toward the lock position where the contact member is brought into contact with the contacted portion in the first or second invention. According to the third invention, once the user moves the contact member to the locked position, the user can hold the contact member in the locked position without holding it by hand. In this respect, the operability of the cutting tool can be further enhanced.

According to a fourth aspect of the present invention, in any one of the first to third aspects, a recessed portion is provided as the contacted portion, and the tip end portion of the contact member is engaged with the contacted portion (recessed portion). The cutting tool is configured to fix the slide position of the cutting machine body. According to the fourth aspect of the invention, since the sliding position is fixed by causing the tip of the abutting member to enter the direction intersecting the sliding direction and engaging the concave and convex portions, the tip of the conventional fixing screw is screwed. Since it is not the structure which presses and fixes to a slide side member (cutting machine main body side) with this clamping force, it does not cause the displacement of a cutting blade, and can implement | achieve highly accurate cutting process by this.

According to a fifth invention, in any one of the first to fourth inventions, a lock pin as a contact member is provided in the slide support side member, and a lock hole as a contact portion is provided in the slide side member. The cutting tool is configured to allow the tip of the contact member (lock pin) to enter the contacted portion (lock hole) and fix the slide position of the cutting machine body. According to the fifth invention, the sliding position of the slide-side member can be fixed by causing the tip of the abutting member (lock pin) on the slide support side to enter the abutted portion (lock hole) on the slide side. it can. Since the lock pin is moved in the axial direction to lock the slide position and unlocked, the operability can be improved as compared with the conventional troublesome operation of rotating the fixing screw. In addition, the slide pin is inserted into the lock hole and the slide position is fixed, and the conventional fixing screw is not pressed and fixed with the tightening force of the screw, so there is no displacement of the cutting blade. As a result, high-precision cutting can be performed.

According to a sixth invention, in any one of the first to fifth inventions, a main body support arm provided on the table is a slide support side member, and a slider that slides through a slide bar provided on the main body support arm is a slide side. As a member, the main body support arm is provided with a lock pin as a contact member, and the slider is provided with a lock hole as a contacted portion. According to the sixth aspect of the present invention, the slide position of the cutting machine main body can be fixed by moving the contact member of the main body support arm in the axial direction to contact the contact portion of the slider. Since the contact member can be moved and operated in the axial direction to be locked and unlocked, the operability of the lock / unlock operation at the slide position can be improved as compared with the conventional case.

According to a seventh invention, in any one of the first to sixth inventions, the abutting member can be rotated around the axis to hold the abutting portion at the unlocked position separated from the abutted portion. The cutting tool is configured. According to the seventh aspect, the user does not need to hold the unlock position of the contact member, and the operability of the slide lock device can be enhanced in this respect.

The eighth invention is the cutting tool according to any one of the first to seventh inventions, wherein the cutting machine main body can be fixed to the slide retracted end position by the slide lock device. According to the eighth aspect of the invention, if the abutting member is moved in the axial direction while the cutting machine main body is slid to the slide retreat end position, the cutting machine main body is fixed to be non-slidable at the slide retreat end position. .

1 is an overall side view of a tabletop cutting tool according to an embodiment of the present invention. This figure has shown the state which moved the cutting machine main body to the slide advance end. It is (II) arrow line view of FIG. 1, Comprising: It is the whole top view of a cutting tool. It is (III) arrow directional view of FIG. 1, Comprising: It is the whole cutting tool front view. 1 is an overall side view of a tabletop cutting tool according to an embodiment of the present invention. This figure has shown the state which moved the cutting machine main body to the slide backward end. It is (V) arrow directional view of FIG. 4, Comprising: It is the whole cutting tool top view. It is (VI) arrow view of FIG. 4, Comprising: It is the whole cutting tool front view. It is a perspective view of a slide lock device and its circumference. This figure shows the locked state of the slide lock device. FIG. 8 is a cross-sectional view taken along line (VIII)-(VIII) in FIG. 7, and is a cross-sectional view of the slide lock device and its surroundings. It is a perspective view of a slide lock device and its circumference. This figure shows the unlocked state of the slide lock device. FIG. 10 is a cross-sectional view taken along line (X)-(X) in FIG. 9, and is a cross-sectional view of the slide lock device and its surroundings. It is a disassembled perspective view of a slide lock apparatus.

Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 6 show a cutting tool 1 according to the present embodiment. 1 to 6, the user is located on the right side of the cutting tool 1. In the following description, the front, rear, left, right, top and bottom directions of the members and the like are used on the basis of the user. Therefore, the user is positioned on the front side of the cutting tool 1, and the cutting material W is cut by moving the cutting machine main body 10 from the front side of the user to the rear side.

The cutting tool 1 is, for example, a table-type cutting tool, also called a slide marnoco, which can be moved up and down above the table 2 on which the cutting material W is placed, the base 3 that supports the table 2, and the table 2. The cutting machine main body 10 is supported by the above. The table 2 is supported on the upper surface of the base 3 so as to be rotatable left and right.

Auxiliary table portions

3 a and 3 a are provided on the left and right sides of the base 2. The upper surfaces of both

auxiliary table portions

3 a and 3 a coincide with the upper surface of the table 2. A cutting material W is placed on the upper surface of the table 2 so as to straddle between the left and right

auxiliary table portions

3a, 3a. The cutting material W is fixed by a clamping device (not shown) provided in the left and right

auxiliary table portions

3a, 3a. A fence 4 for positioning the cutting material W is provided on the upper surface side of the table 2. The fence 4 is arranged with a slight gap between the left and right

auxiliary table portions

3a, 3a and the upper surface of the table 2. The positioning surface of the fence 4 (the surface on which the cutting material W abuts) coincides with the center of rotation of the table 2 in plan view.

The table 2 can be rotated left and right by gripping a grip 2a provided at the front thereof. The rotational position of the table 2 is locked by inserting the positioning rod 2b into the positioning recesses 3b to 3b provided on the base 3 side. When the unlocking lever 2c disposed on the upper side of the grip 2a is tilted downward, the positioning rod 2b can be moved backward to release the rotational position locked state of the table 2. The table 2 can be rotated in this released state. The rotational position of the table 2 can also be fixed by tightening the grip 2a.

The cutting machine body 10 is supported so as to be slidable back and forth with respect to the table 2 through a two-stage slide mechanism.

The main body support 6 is supported at the rear of the table 2 via a lower slide mechanism. The lower slide mechanism has a configuration in which a pair of left and right slide bars 5 and 5 are supported so as to be slidable in the front-rear direction via a bearing (not shown in the figure) attached to the lower surface of the table 2. The lower slide mechanism is fixed at an arbitrary position by tightening the fixing screw 5a.

The main body support section 6 includes a left / right tilt support section 7 and a main body support arm 8. A left and right tilt support portion 7 is coupled to the rear portions of the left and right slide bars 5 and 5. The left / right tilt support portion 7 has a function of tilting the cutting machine body 10 left and right with respect to the cutting progress direction (front / rear direction) to enable so-called tilt cut, and the tilt support side member 7a and the tilt side member 7b. Are coupled to each other via a tilting shaft so as to be rotatable. Although the tilt axis is not visible in the figure, it is arranged along the front-rear direction and coincides with the upper surface of the table 2 in a side view. The tilt support side member 7a is coupled to the rear ends of the pair of left and right slide bars 5,5. The main body support arm 8 is provided so as to extend upward from the upper surface of the tilt side member 7b. By this left and right tilt support portion 7, the cutting material W can be inclined and cut by tilting the cutting machine body 10 to the left side, for example, by 45 ° in addition to the right angle cutting position. The inclination angle of the cutting machine body 10 is fixed by tightening the inclination fixing lever 7c.

An upper slide mechanism mainly composed of a pair of slide bars 11 and 11 is provided on the upper part of the main body support arm 8. A slide bar holding portion 9 is provided on the upper portion of the main body support arm 8. The rear end portions of the two

slide bars

11 and 11 are coupled to the slide bar holding portion 9. The two

slide bars

11, 11 are fixed in a state of extending long forward from the slide bar holding portion 9. The two

slide bars

11, 11 are supported in parallel with each other at a constant interval in the vertical direction. The front end portions of the two

slide bars

11 and 11 are coupled to each other via a coupling member 12.

The slider 13 is supported through the two

slide bars

11, 11 so as to be slidable in the front-rear direction. The slider 13 is supported so as to be slidable back and forth between the slide bar holding portion 9 and the coupling member 12. The slider 13 is provided with a slide lock device 30 for fixing the slide position. Details of the slide lock device 30 will be described later.

The cutting machine body 10 is supported on the right side of the slider 13. The cutting machine main body 10 is supported by the slider 13 via the vertical tilting portion 14. The cutting machine main body 10 includes a main body case portion 15 supported on the right side portion of the slider 13 via a tilting support shaft 14 a of the vertical tilting portion 14 and an electric motor attached to the right side portion of the main body case 15. 16 and a circular cutting blade (not shown in the figure) rotating with the electric motor 16 as a drive source. The upper side of the cutting blade is covered with the main body case portion 15. The lower side of the cutting blade is covered with a movable cover 17 that can be opened and closed. The movable cover 17 is opened and closed in conjunction with the vertical movement of the cutting machine main body 10 via a link arm 17 a interposed between the vertical tilting portion 14 and the main body case 15. As shown in FIG. 1, in a state where the cutting machine main body 10 is located at the upper moving end, the movable cover 17 is completely closed, and the entire cutting blade is covered with the main body case 15 and the movable cover 17. When the cutting machine main body 10 is gradually moved downward, the movable cover 17 is rotated clockwise in FIG. When the cutting machine body 10 reaches the lower moving end, the movable cover 17 is fully opened, and the lower side of the cutting blade is exposed and cut into the cutting material W.

A main handle 18 and a sub handle 19 are provided on the right side of the main body case portion 15 and above the electric motor 16. The main handle 18 is gripped when the cutting machine body 10 is moved up and down. A switch lever 18 a for starting and stopping the electric motor 16 is disposed on the lower surface of the main handle 18. When the user holding the main handle 18 pulls the switch lever 18a with the fingertip of the gripped hand, the electric motor 16 is activated and the cutting blade rotates clockwise in FIG.

The sub handle 19 is provided in a direction that extends in a substantially horizontal direction when the cutting machine body 10 is tilted to the lower end position. The cutting machine main body 10 is fixed at the lower moving end position by a lower moving end lock which is not visible in the drawing. The sub handle 19 is gripped when the cutting machine main body 10 is fixed to the lower moving end and the cutting tool 1 is carried, and functions as a carrying handle.

The cutting machine body 10 includes a lighting fixture 20. The lighting fixture 20 extends upward from the vicinity between the main handle 18 and the sub handle 19. By turning on this lighting fixture 20, the cutting site is mainly illuminated brightly, and the convenience of the cutting work in the darkness is achieved.

The cutting machine body 10 can be tilted up and down and slid back and forth. The cutting machine body 10 can be fixed by the slide lock device 30 at the rear end position of the front / rear slide range. Details of the slide lock device 30 are shown in FIG. The slide lock device 30 includes a contact member 31 provided on the slide bar support portion 9 and a contacted portion 32 provided on the slider 13 side.

As shown in FIG. 11, the contact member 31 is a shaft member (lock pin) having a tip contact portion 31a having a large diameter at the tip. The contact member 31 is supported by a support pedestal 33 provided integrally with the slide bar support 9 so as to be movable in the axial direction. The support pedestal portion 33 is provided in a state of protruding forward from the front end of the left side portion of the slide bar support portion 9. The contact member 31 is inserted into a stepped support hole 33 a provided in the support base 33. The contact member 31 is supported by the support pedestal 33 so as to be movable in the left-right direction in a direction that intersects the sliding direction (front-rear direction) of the slider 13. A compression spring 34 is interposed between the tip contact portion 31 a of the contact member 31 and the support hole 33 a of the support base portion 33. The contact member 31 is urged by the compression spring 34 in a direction (rightward in FIG. 11) in which the tip contact portion 31a protrudes rightward from the right end surface of the support base portion 33. When the protruding tip contact portion 31a enters the contacted portion 32 of the slider 13, the slider 13 is fixed so as not to slide at the slide rear end position.

The left end portion of the contact member 31 (the end opposite to the tip contact portion 31a) protrudes leftward from the left side portion of the support base portion 33, and the knob 35 is attached to the protruding portion. . The knob 35 is supported by a retaining ring 36 so as not to drop off from the left end portion of the slide member 31.

The knob 35 is supported so as to be rotatable about the axis with respect to the contact member 31. On the right end surface of the knob 35, two

engagement pieces

35a, 35a are provided so as to protrude rightward. The two

engaging piece portions

35a and 35a are arranged at a position equally divided in the circumferential direction with respect to a position around the axis of the contact member 31.

On the left end surface of the support pedestal 33, there are two types of

engagement grooves

33b, 33b, 33c, and 33c with different depths in the axial direction in the circumferentially divided position about the position of the support hole 33a in the circumferential direction. It is provided alternately. Two

deep engagement grooves

33b and 33b are arranged opposite to each other at positions around the axis, and two

shallow engagement grooves

33c and 33c are arranged opposite to each other at positions around the axis. 7 and 8, when the engaging

pieces

35a and 35a of the knob 35 are inserted into the deep

engaging grooves

33b and 33b, the abutting member 31 is pressed by the urging force of the compression spring 34. 31a can be moved to the lock position protruding rightward from the right end surface of the support pedestal 33, and the contact member 31 is held in this lock position.

When the cutting member body 10 is slid to the slide rear end position and the slider 13 is brought into contact with the slide bar support portion 9 as shown in FIGS. As shown in FIG. 8, the tip contact portion 31a is inserted into the contacted portion 32 of the slider 13, and the slider 13 and thus the cutting machine main body 10 are locked so as not to slide at the slide rear end position.

On the other hand, as shown in FIGS. 9 and 10, when the engaging

pieces

35 a and 35 a of the knob 35 are inserted into the

shallow engaging grooves

33 c and 33 c, the abutting member 31 resists the compression spring 34 and moves to the left side. Held in the unlocked position. In this unlocked position, the tip contact portion 31 a of the contact member 31 is held at a position where it does not protrude from the right end surface of the support base portion 33. For this reason, in the state where the contact member 31 is held at the unlocked position, the slide lock device 30 does not function as a lock mechanism. Therefore, the user does not hold the contact member 31 at all, and the cutting machine main body 10 does not hold. Can be smoothly slid in the entire slide range.

To switch the contact member 31 from the locked position holding state to the unlocked position holding state or vice versa, the knob 35 is pulled to the left against the compression spring 34. The

engagement pieces

35a, 35a are disengaged from all the

engagement grooves

33b, 33b, 33c, 33c. In this state, the knob 35 is rotated by 90 ° to enter the

engagement pieces

35a, 35a. This can be done by switching the

mating grooves

33b, 33b (or 33c, 33c).

An escape recess 13 a is provided at the rear end of the left side of the slider 13 to avoid interference with the support base 33. A contacted portion 32 is provided at the center of the bottom surface of the escape recess 13a. In the present embodiment, as the contacted portion 32, a circular hole (lock hole) having a diameter into which the tip contact portion 31a of the contact member 31 can be inserted is illustrated.

When the slider 13 is slid to the rear end position, a part of the support pedestal 33 is accommodated in the escape recess 13a, and the contacted portion 32 is positioned on the axis of the contact member 31. It becomes. In this state, the knob 35 can be gripped to move the contact member 31 to the locked position and the unlock position, and the knob 35 can be rotated to hold the locked position and unlocked position of the contact member 31. Can be switched.

According to the tabletop cutting machine of the present embodiment configured as described above, the slider 13 is cut by moving the contact member 31 in the axial direction (left and right direction) by gripping the knob 35 of the slide lock device 30. The machine main body 10 can be locked and unlocked at the slide rear end position.

For this reason, it is possible to more easily lock and unlock the slide position of the cutting machine body 10 as compared with the conventional configuration in which the fixing screw is rotated and locked and unlocked.

Further, since the

engagement piece portions

35a and 35a of the knob 35 are allowed to enter the

shallow engagement grooves

33c and 33c of the support base portion 33, the contact member 31 can be held at the unlock position. In a case where it is not necessary to function 30, the user can smoothly perform the slide operation of the cutting machine body 10 without taking the trouble of holding the contact member 31 in the unlock position.

Further, according to the illustrated slide lock device 30, the front end abutting portion 31 a of the abutting member 31 is caused to enter the abutted portion 32 (lock hole) of the slider 13, so that the cutting machine body 10 is moved to the rear end of the slide. It is configured to lock in position. For this reason, since it is not the structure which presses and fixes to a slide bar with the fastening force of a screw conventionally, the cutting edge of a cutting blade will not be displaced slightly, and this can perform exact cutting processing. .

Various modifications can be made to the embodiment described above. For example, although the lock hole is illustrated as the contacted portion 32 on the slider 13 side, a protrusion or a wall surface may be used as the contacted portion with respect to the contact member 31 instead.

Moreover, although the structure which inserts and locks the front-end | tip contact part 31a of the contact member 31 in the lock hole as the to-be-contacted part 32 was illustrated, the contact surface of the contact member 31 to the contact surface as a to-be-contacted part was illustrated. It is good also as a structure which presses the front-end | tip contact part 31a and locks the slide position of the slider 13 as a result, and the cutting machine main body 10 by friction between both.

Moreover, although the structure which locks the cutting machine main body 10 in a slide rear end position with the slide lock device 30 was illustrated, it arrange | positions in the position shifted to the front side from the position which illustrated the support base part 33, and is nearer than a slide rear end position. It is good also as a structure locked at this position.

Furthermore, the support pedestal portions may be arranged at a plurality of positions in the front-rear direction, and a contact member may be provided for each, so that the cutting machine body can be locked at a plurality of positions in the slide direction.

Further, although the configuration in which the slide lock device 30 is provided on the left side of the slide bar holding unit 9 as viewed from the user is illustrated, the configuration may be provided on the right side.

Furthermore, the escape recess 13a of the slider 13 may be omitted by arranging the support pedestal at a position shifted to the left from the illustrated position.

Also, the illustrated slide lock device 30 can be applied to a one-stage slide type tabletop cutting machine that does not include the lower slide mechanism (slide bars 5 and 5).

Claims

A table-type cutting tool provided with a table for placing a cutting material, and a cutting machine body supported so as to be movable up and down above the cutting material and slidable in the surface direction of the table,
A slide lock device for fixing the slide position of the cutting machine main body is provided. The slide lock device includes a contact member on one of the slide support side member and the slide side member, and the corresponding contact member on the other side. It has a contacted part to be contacted,
The abutting member is brought into contact with the abutted portion and the slide position of the cutting machine body can be fixed, and the abutting member is detached from the abutted portion and the sliding position of the cutting machine body is fixed. The fixed state can be released,
A cutting tool configured to move the abutting member in an axial direction intersecting the sliding direction to abut and separate from the abutted portion.
The cutting tool according to claim 1, wherein the cutting tool is configured to be able to be held in an unlock position where the contact member is separated from the contacted portion.
The cutting tool according to claim 1 or 2, wherein the cutting tool is elastically biased toward a lock position where the contact member is in contact with the contacted portion.
The cutting tool according to any one of claims 1 to 3, wherein a recessed portion is provided as the abutted portion, and the tip end portion of the abutting member is engaged with the abutted portion in an uneven manner. A cutting tool configured to fix a slide position of the main body of the cutting machine.
5. The cutting tool according to claim 1, wherein a lock pin as the contact member is provided in the slide support side member, and a lock hole as the contacted portion is provided in the slide side member. A cutting tool configured to fix the slide position of the cutting machine main body by allowing the tip of the contact member to enter the contacted portion.
6. The cutting tool according to claim 1, wherein a main body support arm provided on the table is used as the slide support side member, and the slider slides through a slide bar provided on the main body support arm. A cutting tool comprising a lock pin as the contact member on the main body support arm and a lock hole as the contacted portion on the slider.
The cutting tool according to any one of claims 1 to 6, wherein the abutting member is rotated about the axis so that the abutting member is separated from the abutted portion. A cutting tool that can be held.
The cutting tool according to any one of claims 1 to 7, wherein the cutting machine body can be fixed at a slide retracted end position by the slide lock device.