JP4454842B2 - Slide circular saw - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention has a configuration in which a circular saw body disposed so as to be movable up and down above a table on which a material to be cut can be placed is linearly moved in the surface direction of the table after the lowering operation to cut the material to be cut. Related to the slide circular saw machine.
[0002]
[Prior art]
This type of slide circular saw is disclosed in, for example, Japanese Patent Application Laid-Open No. 11-90730. The slide circular saw machine described in the publication is configured such that a circular saw body provided with a saw blade is movable in the surface direction of the table via a slide bar. With the (wood) set on the upper surface of the table, the circular saw body is lowered (tilted) toward the material to be cut, and then moved in the surface direction of the table, whereby a wide material to be cut can be cut. .
[0003]
[Problems to be solved by the invention]
In the slide circular saw described in the above publication, if the cutting ability (enlargement of the maximum cutting width) is increased by expanding the moving range of the slide bar set on the table, the table, and eventually the circular saw The overall size will be increased.
[0004]
The present invention has been made in view of the above-described conventional problems. An object of the present invention is to provide a slide circular saw machine in which a circular saw body is configured to be movable in the surface direction of the table. The purpose is to increase the amount of movement of the circular saw body in a manner that avoids an increase in size.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a slide circular saw machine according to the present invention has a configuration as described in each claim.
According to the first aspect of the present invention, the slide circular saw machine is configured such that the relative movement of the circular saw body with respect to the surface direction of the table is performed in a plurality of stages. This makes it possible to increase the amount of movement of the circular saw body in a manner that avoids an increase in the size of the table.
In the first aspect of the invention, the two-stage relative movement of the circular saw body includes a support portion supported by the table and supporting the circular saw body, and the circular saw body and / or the table with respect to the support portion. The configuration is achieved by relative movement. According to such a configuration, the circular saw body can be moved relative to the table in two stages via the support portion.
Therefore, according to the first aspect of the present invention, the amount of movement of the circular saw body can be increased without increasing the size of the table. In other words, when the movement amount is set to be the same as the conventional amount, the entire circular saw machine including the table can be made compact.
[0006]
In this case, as described in claim 2 , the two-stage relative movement of the circular saw body is achieved by a relative movement between the table and the support part and a relative movement between the circular saw body and the support part. It is preferable that According to such a configuration, the movement amount of the circular saw body can be increased without increasing the size of the table.
[0007]
Similar effects can also be obtained by the following related inventions not included in the scope of claims. This related invention is as follows: "A circular saw body arranged so as to be movable up and down above a table moves relative to the table in the surface direction to cut a workpiece placed on the table. A slide circular saw machine having a configuration, wherein the circular saw body is supported by the table via a plurality of stages of slide mechanisms, and the slide mechanisms are supported so as to be movable in the surface direction of the table. A pair of hollow outer slide members that are parallel to the inner slide member, an inner slide member that is fitted in the outer slide member so as to be relatively movable in the axial direction, and the inner slide member that is supported in a spanning manner. The circular saw body is supported by the support part, and the circular saw body moves the outer slide member relative to the table, and the outer slide part. It can be specified as “slide circular saw machine configured to be movable in the table surface direction with respect to the table in a plurality of stages by the movement operation of the inner slide member with respect to the material” .
In this related invention , the relative movement of the circular saw body is achieved by the movement of the outer slide member formed in a hollow shape and the movement of the inner slide member fitted in the outer slide member. Is. According to such a configuration, the slide structure can be established with a small space.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described below with reference to FIGS. This first embodiment corresponds to an embodiment of the invention described in claim 1. FIGS. 1 and 2 are side sectional views showing a slide circular saw, respectively. FIG. 1 shows a state before sliding, and FIG. 2 shows a state after sliding. FIG. 3 is a plan view showing a part of a slide circular saw machine in which a circular saw body and an arm for supporting it are omitted.
As shown in the drawing, the slide circular saw machine 1 is disposed above the base 2 mounted on the floor, the rotary table 5 attached to the base 2, and the table 5, and the table is moved downward. A circular saw body 20 and the like for cutting the workpiece W set on 5 are provided as main constituent members.
[0009]
The material to be cut W to be cut is placed on the upper surface 5a, which is the surface for placing the material to be cut, of the table 5, and the material to be cut contact surface 3a of the fence 3 erected on the rear side on the base 2. In a state where one surface is in contact with each other, it is pressed and fixed from above by a workpiece pressing member (not shown). When the circular saw body 20 is lowered in the fixed state, the circular saw body 20 is cut by the saw blade 21 that is rotationally driven by an electric motor (not shown). 1 and 2 each show a lowered state of the circular saw body 20. The table 5 is provided with a blade edge 5b through which the saw blade 21 can penetrate when the workpiece W is cut. The blade edge 5b extends a part of the outer periphery of the table 5 in the radial direction. It extends to the formed table lock mounting portion 6. Moreover, the fence 3 is provided in both sides on both sides of the blade edge | tip 5b, as shown in FIG.
[0010]
The saw blade 21 is arranged so that a cutting direction (hereinafter referred to as a cutting line) in a plan view is perpendicular to the workpiece contact surface 3 a of the fence 3. Accordingly, although it is normally a right angle cut, the table 5 and the circular saw body 20 are horizontally rotated integrally and the cut angle with respect to the fence 3 is changed by using this right angle cut as a standard, so that the workpiece W is placed on the upper surface. It can be cut diagonally when viewed from the side and straight when viewed from the side. Hereinafter, this cutting is called angle cutting.
[0011]
In order to enable the above-described angle cutting, the center of rotation of the table 5 is set just below the intersection between the workpiece contact surface 3a of the fence 3 and the cut line. That is, the table 5 is rotatably attached to the base 2 via the vertical axis 7 arranged at the rotation center. Therefore, by turning the circular saw body 20 together with the table 5 about the vertical axis 7, the cutting angle of the saw blade 21 with respect to the workpiece contact surface 3 a of the fence 3 can be adjusted.
[0012]
Further, the table 5 is provided with a table lock mechanism 10 for fixing the angle-adjusted table 5 to the base 2. The table lock mechanism 10 includes a first lock pin 11 for positive locking for positioning the table 5 on the base 2 at every fixed angle, and a second lock pin 12 for firmly fixing the table 5 to the positioning position. Have. As shown in FIG. 3, the base 2 is provided with at least a semicircular arc-shaped locking side wall 4 centered on the rotation fulcrum of the table 5, and the locking side wall 4 has a constant pitch in the circumferential direction. A recess (notch) 4a is provided for each.
The first lock pin 11 is pushed and engaged with the recess 4a of the lock side wall 4 by the spring 14, and is applied to the spring 14 when the knob 13a of the operation lever 13 for unlocking is pressed from above. It is configured to be retracted against the recess 4a. The second lock pin 12 is screwed to the table 5, and by rotating the operation knob 12 a, the distal end presses and locks the locking side wall 4 via the pressure plate 15, and the pressing is released. By doing so, the lock is released.
[0013]
Next, the attachment relationship (support relationship) of the circular saw body 20 with respect to the table 5 will be described. The table 5 is provided with two slide bars 31 in the horizontal direction. One end of the slide bar 31 is provided with an arm 22 supported via an arm holder 24, and the circular saw body 20 is supported on the arm 22. Has been. In addition, said arm holder 24 respond | corresponds to the support part which supports the circular saw main body 20 said by this invention.
The arm 22 extends above the slide bar 31 toward the upper surface side of the table 5, and the circular saw body 20 is attached to a tip end portion thereof via a support shaft 23 so as to be tiltable in the vertical direction. The circular saw body 20 is always held at the upper standby (initial) position by a return spring (not shown). Therefore, the lowering operation at the time of cutting the workpiece is against the spring force of the return spring. Done.
[0014]
Further, in order to enable the workpiece W to be cut straight when viewed from above and obliquely viewed from the side (hereinafter, this cutting is referred to as inclined cutting), the arm 22 has a horizontal shaft 25 with respect to the arm holder 24. It is attached so that it can tilt in the left-right direction. The tilting operation of the arm 22 with respect to the arm holder 24 is performed in a state where the arm 22 is stably supported by an arcuate guide surface 24 a centering on a tilting fulcrum formed on the arm holder 24. The axis of the horizontal axis 25 is set on the upper surface 5a of the table 5 and on an extension line of the blade edge 5b. This makes it possible to adjust the angle of the saw blade 21 with respect to the upper surface 5a of the table 5 (normally, the right angle position is the standard).
The horizontal shaft 25 is screwed into a screw hole provided in the arm 22, and the arm 22 can be fixed to and released from the arm holder 24 by rotating an operation lever 26 attached to the shaft end. Yes.
[0015]
Next, the slide mechanism 30 of the slide circular saw machine 1 configured as described above and capable of angle cutting and inclination cutting will be described. The slide mechanism 30 for moving the circular saw body 20 relative to the table 5 is mainly composed of two left and right slide bars 31 as slide members arranged in parallel to each other. The slide bar 31 is mounted so as to be movable in the surface direction (horizontal direction) of the table 5 via a bearing (linear ball bearing) 32 within the vertical width of the table 5, and the arm holder 24 is provided with a bearing (linear ball bearing) at the protruding end. A bearing) 33 is attached so as to be movable in the axial direction.
[0016]
The slide bar 31 is formed in a circular cross section and is joined by front and rear tie bars 34 and 35 at both ends in the moving direction, and the front (right side in the figure) tie bar 34 contacts the front and rear stoppers 36 and 37 provided on the base 2. The range of movement is defined by touching. The rear stopper 37 is provided on the boss portion of the table 5. Further, the arm holder 24 is provided in a spanning manner with respect to the two slide bars 31, and the rear tie bar 35 (the left side in the drawing) in which the outer case 33 a of the bearing 33 is provided on the slide bar 31, and the slide bar The movement range is defined by abutting against a stopper ring 38 provided approximately in the middle of 31 in the axial direction.
As described above, the circular saw body 20 is configured to be movable in two stages, that is, the movement of the slide bar 31 and the movement of the arm holder 24 with respect to the slide bar 31. FIG. 1 and FIG. The movement amount of the arm holder 24 is indicated by S1, and the movement amount of the arm holder 24 is indicated by S2.
[0017]
In addition, in order to fix the slide operation of the circular saw body and to enable use as a general circular saw machine, the base 2 is provided with a slide lock mechanism 41 for locking the movement of the slide bar 31. It has been. The slide lock mechanism 41 is fitted to the slide bar 31 so that the slide bar 31 can move in the axial direction, and an auxiliary ring 43 fixed to the base 2 side by a set screw 42, and a base 2 and a lock screw 44 which is screwed into a screw hole provided in the auxiliary ring 43 and whose tip can abut on the outer peripheral surface of the slide bar 31. Therefore, the movement of the slide bar 31 can be locked by tightening the lock screw 44 and pressing the tip against the slide bar 31.
On the other hand, a slide lock mechanism 41 configured similarly to the slide bar 31 is also provided on the arm holder 24 side, and the movement of the arm holder 24 relative to the slide bar 31 can be locked by operating a lock screw 44. it can.
[0018]
In the present embodiment, as described above, the circular saw body 20 can move in two stages, that is, the movement of the slide bar 31 with respect to the table 5 and the movement of the arm holder 24 with respect to the slide bar 31, that is, the circular saw body 20. The structure is such that the arm holder 24 as a support portion for supporting the saw body 20 can be relatively moved in two stages. Accordingly, when cutting the workpiece W set on the table 5, as shown in FIG. 1, the circular saw body 20 is moved to the front (right side in the figure) and the support shaft 23 is used as a fulcrum. 2, the saw blade 21 is cut into the workpiece W, and then the circular saw body 20 is pushed toward the fence 3 (left side in the drawing) to cut the workpiece W as shown in FIG. 2. be able to.
In this case, the circular saw body 20 can be moved by a movement amount S1 + S2 obtained by adding the movement amount S1 of the slide bar 31 and the movement amount S2 of the arm holder 24, so that the total movement amount is increased as compared with the conventional case. That is, when the amount of movement S1 of the slide bar 31 relative to the table 5 is set in the same manner as in the prior art, it can be increased by the amount of movement S2 of the arm holder 24. Therefore, since the moving area of the slide bar 31 at this time can be set in the same manner as in the prior art, an increase in the size of the table 5 is avoided. In other words, when the total amount of movement of the circular saw body 20 is set in the same manner as in the prior art, the entire slide circular saw machine 1 can be made compact.
[0019]
Next, an embodiment (second embodiment) of a related invention different from the invention described in the claims will be described with reference to FIG. The second embodiment form status is a modification of the slide mechanism 30 for relatively moving the circular saw main body 20 with respect to the table 5, in this embodiment, the first slide bar 51 of the two Is formed in a hollow shape and is movably attached to the table 5 via a bearing (linear ball bearing) 32. The second slide bar 52 is movably fitted in the first slide bar 51 via a bearing (linear ball bearing) 33, and the arm holder 24 is fixed to the second slide bar 52. Yes. The first slide bar 51 corresponds to the outer slide member in the present invention, and the second slide bar 52 corresponds to the inner slide member in the present invention.
[0020]
The first slide bar 51 has a moving range defined by the front and rear stoppers 51a and 51b provided on the outer periphery of the first slide bar 51 abutting against the axial end surface of the outer case 32a of the bearing 32, and the second slide bar 51 52, the front and rear stoppers 52a and 52b provided on the outer periphery thereof are in contact with the axial end surface of the outer case 33a of the bearing 33, thereby defining a moving range. Other configurations are the same as those in the first embodiment described above.
[0021]
Accordingly, also in the second embodiment, the circular saw body 20 has two stages by the movement of the first slide bar 51 with respect to the table 5 and the movement of the second slide bar 52 with respect to the first slide bar 51. You can move with. In particular, in the second embodiment, since the so-called telescope structure in which the second slide bar 52 is inserted into the hollow first slide bar 51 is adopted, the slide structure can be established in a small space. Thus, a more compact size is possible.
[0022]
Next, an embodiment (third embodiment) of the invention described in claim 2 will be described with reference to FIG. Oite to this third embodiment forms state, the slide mechanism 30 for relatively moving the circular saw main body 20 with respect to the table 5, via the arm holder 24 as a support portion for supporting the circular saw main body 20 table 5, the circular saw body 20 is attached to the arm holder 24, which is a support portion, so as to be capable of relative movement, so that it can move in two stages.
As the moving structure of the arm holder 24 with respect to the table 5, the structure in which the slide bar 31 described in the first embodiment moves to the table 5 via the bearing 32 is adopted. The holder 24 is fixed. In addition, about the slide lock mechanism 41 etc. which lock the movement of the slide bar 31, since it is the same as that of 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0023]
On the other hand, as a moving structure of the circular saw body 20 with respect to the arm holder 24, a retainer 61 is provided on the upper portion of the arm holder 24, and an upper slide bar 62 moves to the retainer 61 in an axial direction parallel to the slide bar 31. It is configured to be possible (cannot rotate in the circumferential direction). The circular saw body 20 is attached to one end of the upper slide bar 62 via a bracket 63 so as to be rotatable in the vertical direction. Thus, the circular saw body 20 is movably attached to the arm holder 24, and its movement range is defined by a stopper (not shown). The upper slide bar 62 is covered with a dust cover 64 that can be expanded and contracted.
Although not shown, the retainer 61 is provided with a slide lock mechanism similar to the slide lock mechanism 41 described in the first embodiment for locking the movement of the upper slide bar 62. In addition, regarding the other, about the structure similar to 1st Embodiment mentioned above, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0024]
As described above, in the third embodiment, the circular saw body 20 is configured such that the arm holder 24 as a support portion moves with respect to the table 5 via the slide bar 31, and also with respect to the arm holder 24. The circular saw body 20 itself can be moved in two stages by moving through the upper slide bar 62.
Therefore, according to this embodiment, the circular saw body 20 can move with respect to the table 5 by the movement amount S1 + S2 that is the sum of the movement amount S1 of the slide bar 31 and the movement amount S2 of the upper slide bar 62. The total amount of movement can be increased without increasing the size of the table 5.
[0025]
In addition, this invention is not limited to embodiment of illustration, It can change suitably in the range which does not deviate from the summary.
For example, although the slide circular saw 1 having the functions of angle cutting and inclined cutting has been described, it may be implemented in a mode that does not have the above functions. Further, the number of the slide bars 31 and 51 or the cross-sectional shape may be freely changed.
Further, although the two-stage slide structure is used, the number of moving stages may be further increased. Further, in the second embodiment, as a configuration in which the second slide bar 52 is movably fitted in the first slide bar 51, for example, as shown in FIG. A configuration in which the second slide bar 52 is formed to have a groove shape in cross section, and the second slide bar 52 engages with each other via a concave portion 51c and a convex portion 52c, or 2 as shown in FIG. The slide bar 51 may be formed in a U-shaped cross section, and the second slide bar 52 may be movably fitted between the two slide bars 51.
[0026]
In the third embodiment, the arm holder 24 as a support portion can be moved to the table 5 via the slide bar 31, and the circular saw body 20 moves to the arm holder 24 via the upper slide bar 62. The two-stage moving structure as described in the first embodiment, or the two-stage moving structure as described in the second embodiment, is configured as a circle with respect to the arm holder 24. The moving structure of the saw body 20 may be adopted.
[0027]
【The invention's effect】
As described above in detail, according to the present invention, in a circular circular saw machine in which the circular saw body is configured to be movable in the surface direction of the table, the circular saw body is moved in a manner that avoids an increase in the size of the table. The amount can be expanded.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a slide circular saw machine according to a first embodiment, showing a state before sliding.
FIG. 2 is a side sectional view showing a slide circular saw, similarly, showing a state after sliding.
FIG. 3 is a plan view showing a cut circular saw in which a circular saw body and an arm supporting the circular saw are omitted.
FIG. 4 is a cross-sectional view showing a slide mechanism according to a second embodiment.
FIG. 5 is a side sectional view showing a part of a slide circular saw machine according to a third embodiment in a cutaway manner.
FIG. 6 is an explanatory view showing a modification example of the slide mechanism.
FIG. 7 is an explanatory diagram showing another modification of the slide mechanism.
[Explanation of symbols]
1 Slide Circular Saw Machine 2 Base 5 Table 20 Circular Saw Body 21 Saw Blade 22 Arm 24 Arm Holder 30 Slide Mechanism 31 Slide Bar 32 Bearing 33 Bearing

Claims (2)

A circular saw body arranged so as to be vertically movable and tiltable in the left-right direction above the table moves relative to the table in the surface direction, thereby cutting the material to be cut placed on the table. A slide circular saw of composition,
The circular saw body is supported by the table via a two-stage slide mechanism,
The slide mechanism is supported so as to be movable in the surface direction of the table, and is provided in a spanning manner between a pair of slide bars parallel to each other at a certain interval in the surface direction of the table. A support portion supported so as to be movable in the same direction as the slide bar, the circular saw body is supported by the support portion, and the circular saw body moves the slide bar relative to the table; A slide circular saw machine configured to be movable in the table surface direction with respect to the table by a two-stage independent slide operation by manual operation, which is a movement operation of the support portion with respect to the slide bar. A circular saw body arranged so as to be vertically movable and tiltable in the left-right direction above the table moves relative to the table in the surface direction, thereby cutting the material to be cut placed on the table. A slide circular saw of composition,
The circular saw body is supported by the table via a two-stage slide mechanism,
The slide mechanism is supported so as to be movable in the surface direction of the table, and is fixed to a pair of slide bars parallel to each other at a certain interval in the surface direction of the table. And a pair of mutually parallel upper slide bars supported movably in the same direction as the slide bar, and the circular saw body is supported by the upper slide bar, The circular saw body moves the slide bar relative to the table and moves the upper slide bar relative to the support portion, and the table surface with respect to the table by two independent slide operations by manual operation. A slide circular saw that can move in any direction.

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