JP2002036201A - Guide table for portable circular saw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change a portable circular saw quickly between an ordinary operation and an operation wherein a guide table is used. SOLUTION: A horizontal material rest (2) on which a material (1) is placed, a fence (3) to which the material (1) is applied, and a guide rail (5) horizontally guiding the portable circular saw (4) arranged across the material rest (2) are provided on a base rest (6). The material rest (2) is, in a freely raisable and lowerable manner, fitted to the base rest (6), the guide rail (5) is fitted to the base rest (6) so as to keep a specific height, and a horizontal guide face (32) and a vertical guide face (31) wherein a platen (4b) of the portable circular saw (4) slides while it comes in contact therewith, are formed on the guide rail (5).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a guide table for a portable circular saw.

[0002]

2. Description of the Related Art In order to accurately cut a material such as wood with a portable circular saw, a ruler as described in Japanese Utility Model Laid-Open No. 4-90502 is used. However, since this ruler needs to be brought into contact with the surface of the material, it can cut only a material having a flat surface and the flat surface having a certain width. In addition, the operator must perform three operations of holding the cut material, supporting the ruler, and moving the portable circular saw during the cutting work,
Cutting work is troublesome.

Conventionally, when such a ruler cannot be used, for example, a slide circular saw is used. A guide table as described in US Pat. No. 5,579,672 may be used. This guide table has a horizontal material table on which the material is placed, a fence for applying the material, and a horizontal guide rail arranged so as to straddle the material table on the base. It incorporates the slider above and moves the slider on the guide rail while cutting the material with a portable circular saw blade.

[0004]

However, since the slide circular saw has a motor and a mechanism for sliding a saw blade portion, the entire machine is large and heavy. For this reason, it is inconvenient to carry, and it is difficult to carry out cutting work, for example, by carrying it to the second floor of a construction site or on a roof. It is also difficult to take out only the circular saw portion and use it for other cutting operations.

In the guide table disclosed in US Pat. No. 5,579,672, a slider carrying a portable circular saw is slid on the guide rail, so that the guide rail and a base supporting the guide rail are enlarged. Further, since the portable circular saw is fixed to the slider on the guide rail with screws or the like, the portable circular saw cannot be quickly changed between the normal operation and the operation using the guide table. In addition, the material table is fixed horizontally at a fixed height with respect to the base, the guide rail is held horizontally via a parallel link device with respect to the base, and a portable circular saw is mounted to change the cutting depth. The guide rail must be moved up and down, and if the material is set at a fixed position on the material table, the effective cutting width becomes smaller as the guide rail is lowered.
There is a problem that it is necessary to adjust the position of the material table, and the adjustment operation is complicated.

An object of the present invention is to solve the above problems.

[0007]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a horizontal material stage (2) on which a material (1) is placed, and a fence (3) for applying the material (1).
And a guide rail (5) for horizontally guiding a portable circular saw (4) arranged so as to straddle the material table (2), on a base (6).
The material table (2) is mounted on the base (6) so as to be able to move up and down, the guide rail (5) is mounted on the base (6) so as to maintain a constant height, and the guide rail (5) is mounted. A portable circular saw guide table having a horizontal guide surface (32) and a vertical guide surface (31) on which the surface plate (4b) of the portable circular saw (4) slides while contacting is adopted.

The invention according to claim 2 is the portable circular saw guide according to claim 1, wherein the guide rail (5) is attached to the base (6) so as to be rotatable in a horizontal plane. Adopt a table.

According to a third aspect of the present invention, the portion of the material stand (2) in contact with the saw blade (4a) of the portable circular saw (4) is formed of a cutable material. Adopt a portable circular saw guide table.

According to a fourth aspect of the present invention, the material stage (2) is supported by the base (6) by a parallel crank mechanism, and a rotating shaft (13a, 13b) is provided between the two cranks (12a, 12b). 13b), the elevating shaft (14) is crossed obliquely, and the elevating shaft (14) is engaged with one rotating shaft (13a) via screws (14a, 15) and the other shaft is rotated. The guide table for a portable circular saw according to claim 1, wherein the guide table is rotatably engaged with the driving shaft (13b).

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 7, the guide table for a portable circular saw includes a horizontal material table 2 on which a material 1 is placed.
And a fence 3 for applying the material 1 and a guide rail 5 for horizontally guiding the portable circular saw 4 disposed so as to straddle the material table 1.
Are provided on the base 6.

The base 6 includes legs 6a, 6b made of two left and right beams placed horizontally and in parallel, and leg brackets 7a, 7b, 7 attached to both ends of the left and right legs 6a, 6b, respectively.
c, 7d and left and right leg brackets 7a, 7b or 7c,
The left and right legs 6a, 8a, 8b, 7b, 7d are connected via plate brackets 7a, 7b, 7c, 7d.
Frames 9a and 9b formed of two beams before and after the bridge member 6b.

The leg brackets 7a, 7b, 7c, 7d are fixed on the legs 6a, 6b by bolts 10,
a, 7b or leg supports 8a connecting between 7c, 7d
The left and right legs 6a and 6b are connected to each other by 8b. The front and rear frames 9a and 9b are respectively connected to the front and rear leg supports 8a and 8b.
b and the left and right leg brackets 7
a, 7b or 7c, 7d is slidably fitted. The front and rear frames 9a and 9b are respectively provided with bolts 11a and nuts 11 at the centers of the front and rear leg supports 8a and 8b.
b (see FIG. 3 or FIG. 6). Bolt 11
a and the nut 11b are loosened, so that the front and rear frames 9a and 9b can slide in the left and right directions.
a and 6b can be changed (see FIGS. 3 and 4).

The beams constituting the legs 6a, 6b and the frames 9a, 9b are made of a hollow material obtained by extruding an aluminum alloy to reduce the weight. Also, all beam members are made of hollow members having the same cross-sectional shape.

The material table 2 is attached to the base 6 by a parallel crank mechanism so as to be able to move up and down while maintaining a horizontal position. That is, a pair of parallel crank mechanisms are arranged in parallel between the front and rear frames 9a and 9b, and the material 1 is placed on the upper portions of the pair of parallel crank mechanisms. A pair of parallel crank mechanisms is provided for each leg bracket 7.
Four cranks 12a, 12b, 12c, 12d rotatably connected to pins a, 7b, 7c, 7d, and rotatably pin-connected to upper ends of the four cranks 12a, 12b, 12c, 12d, respectively. Base plate 2a and base plate 2
a material mounting plate 2b which is fixed on the
And FIG. 7). Cranks 12a, 12b, 12c, 12
d and the base plate 2a are connected to the left crank 12
a, 12c and a pin shaft 18b connecting the right cranks 12b, 12d (see FIGS. 3 and 7).

Further, the left cranks 12a and 12c of the pair of parallel crank mechanisms are moved so that the material table 2 can be raised and lowered to a desired height and stopped at a desired position.
An elevating shaft 14 extends obliquely between the right and left cranks 12b and 12d via rotating shafts 13a and 13b, respectively. That is, the left and right cranks 12a, 12c or 12b, 12d on the left and right sides of the pair of parallel crank mechanisms are horizontal rotating shafts 13a, 13b.
(See FIGS. 3 and 7). As shown in FIG. 7, the left rotation shaft 13a is provided at a position above the cranks 12a and 12c, and the right rotation shaft 13b is provided at a position below the cranks 12b and 12d. The elevating shaft 14 has a male screw 14a on the left and a handle 14b on the right. A male screw 14a of the elevating shaft 14 is formed with a female screw 15 formed in a hole crossing the left rotation shaft 13a.
And a portion having a smooth surface between the male screw 14a of the elevating shaft 14 and the handle 14b is connected to the right rotation shaft 13
b through the hole 16 formed so as to cross. Prevention pins 17 are implanted in the elevating shaft 14 before and after the portion penetrating the hole 16 of the right rotating shaft 13b, so that the elevating shaft 14 rotates only with respect to the right rotating shaft 13b. It is possible. Thus, when the lifting shaft 14 is rotated by holding the handle 14b, the crank 12
a, 12b, 12c, and 12d are inclined at a desired angle, so that the material placing plate 2b of the material stage 2 stops at a desired height.

As shown in FIG. 6, the above-mentioned pin shafts 18a and 18b are fixed so that the material table 2 whose height has been adjusted by operating the elevating shaft 14 can be fixed at that position.
A male screw 19 is formed in a portion passing through the rear cranks 12c and 12d, a nut 20 is screwed into the male screw 19, and a knob 21 is attached in a portion passing through the front cranks 12a and 12b. Have been. By gripping the knob 21 and turning the pin shafts 18a and 18b to one side, the parallel crank mechanism is tightened to a desired posture, and the material table 2 can be held at the adjusted height position.

The material placing plate 2b is a portion of the material stand 2 where the saw blade 4a of the portable circular saw 4 comes into contact.
b is made of a cutable material such as wood.

As shown in FIGS. 5 and 6, the fence 3 is attached to the frame 9b on the rear side of the base 6 by the fence bracket 2
2 is attached. The fence 3 is fixed on a fence bracket 22 with bolts 23, and the fence bracket 22 is slidably fitted in the rear frame 9b in the longitudinal direction. A fence clamp 24 is provided between the fence 3 and the rear frame 9b so as to straddle the fence bracket 22.
Reference numeral 4 is adapted to be fastened to the fence bracket 22 by a fastening bolt 25. When the fastening bolt 25 is loosened, the fence 3 can slide on the rear frame 9b together with the fence bracket 22. When the fastening bolt 25 is tightened, the fence clamp 24 fixes both the fence 3 and the rear frame 9b to the fence bracket 22. Therefore, the fence 3 is fixed at a desired position on the rear frame 9b. Since the side surface of the fence 3 stands upright with respect to the material stand 2, the material 1 is positioned at a desired position on the upper surface of the material stand 2 and the side surface of the fence 3.

The fence 3 is also made of a lightweight hollow material like the beams constituting the legs 6a, 6b and the frames 9a, 9b.

As shown in FIG. 1, FIG. 2, and FIG. 6, the guide rail 5 is a horizontal plate formed of a relatively thin plate material, and is horizontally mounted on the base 6 so as to maintain a constant height. It is attached. The guide rail 5 is disposed so as to extend between the front and rear frames 9a and 9b. On the fence 3 fixed on the rear frame 9b, a rotating bracket 26 is fixed with bolts 27, and one end of the guide rail 5 is put on the rotating bracket 26. The slider bracket 28, the slider 29 and the rail support 30 are stacked on the front frame 9a, and the other end of the guide rail 5 is placed on the uppermost rail support 30.

As shown in FIGS. 1 and 4, on the guide rail 5, a ridge 5a as a rail piece for guiding the portable circular saw 4 is formed along its longitudinal direction. One side surface of the ridge 5a becomes a vertical guide surface 31 which slides while the side edge of the surface plate 4b of the portable circular saw 4 is in contact with the upper surface of the guide rail 5 adjacent to the vertical guide surface 31. The bottom surface of the board 4b becomes the horizontal guide surface 32 that slides while making contact.

The guide rail 5 is, as shown in FIG.
In addition to being set in a direction perpendicular to the longitudinal direction of the front and rear frames 9a and 9b, the fence 3, the material table 2, and the like, the base is set via an angle adjusting means so as to be set in a direction inclined at, for example, 45 degrees in a horizontal plane. It is mounted on a table 6. That is, as shown in FIG. 2 and FIG.
And the rotation guide plates 33a, 3 on the rail support 30, respectively.
3b is fixed, one end of the guide rail 5 is engaged with the rotation guide plate 33a through a round hole, and the other end of the guide rail 5 is
4 and is engaged with the rotation guide plate 33b. The rail support 30 is fixed on a slider 29 with bolts 35, the slider 29 is fixed on a slider bracket 28 with bolts 36, and the slider bracket 28 is fitted on the front frame 9a so as to be slidable in its longitudinal direction. ing. A slider clamp 37 is provided between the slider 29 and the front frame 9a so as to straddle the slider bracket 28.
The slider bracket 28 is fastened to the slider bracket 28 by a slider fixing screw 38 having a. When the slider fixing screw 38 is loosened, the slider 29 can slide on the front frame 9a together with the slider bracket 28. When the slider fixing screw 38 is tightened, the slider clamp 37 fixes both the slider 29 and the front frame 9a to the slider bracket 28. Therefore, the slider 29 is fixed at a desired position on the front frame 9a. Therefore, when the slider fixing screw 38 is loosened and the slider 29 is slid on the front frame 9a, the rotation guide plate 33b
The guide rail 5 is tilted from, for example, the position indicated by the solid line in FIG. The slider 29 is also made of a lightweight hollow material like the beams constituting the legs 6a and 6b, the frames 9a and 9b, the fence 3 and the like.

As shown in FIGS. 1 and 2, an angle gauge 39 for indicating an inclination angle is attached to the guide rail 5, and a pointer 4 corresponding to the angle gauge 39 is provided on the fence 3.
0 is attached.

Since the portable circular saw 4 has a known structure, a detailed description thereof will be omitted, but a portable circular saw having a surface plate 4b which can be mounted on the guide rail 5 is used.

Next, the operation of the portable circular saw guide table having the above configuration will be described.

First, the portable circular saw 4 is prepared, and the cutting depth of the saw blade 4a is maximized. Further, the inclination angle of the saw blade 4a with respect to the surface plate 4b is adjusted. The saw blade 4a is set at a position generally perpendicular to the surface plate 4b or inclined at 45 degrees.

A guide table is prepared, the portable circular saw 4 is placed on the guide rail 5, and the height of the material table 2 is adjusted to the lower end of the saw blade 4a. To adjust the height of the material table 2, first, the pin shafts 18a and 18b are loosened with the knob 21 and then the lifting shaft 14 is rotated with the handle 14b. The male screw 14a of the elevating shaft 14 advances and retreats with respect to one of the rotation shafts 13a, and the work table 2 moves up and down while maintaining the horizontal position by the action of the parallel crank mechanism. After the height of the material stage 2 is determined, the pin shafts 18a and 18b are tightened again to fix the material stage 2.

Next, the slider fixing screw 38 is loosened with the knob 38a to adjust the angle of the guide rail 5, and the slider 29 is slid on the front frame 9a.
The guide rail 5 is connected to the front and rear frames 9a and 9b and the fence 3
2 is set at the solid line position in FIG. 2 and the slider fixing screw 38 is tightened. To set at a position inclined at 45 degrees, the slider fixing screw 38 is set at the two-dot chain line position in FIG. Tighten.

The portable circular saw 4 is started and its surface plate 4b
Is cut while sliding along the ridge 5a of the guide rail 5, and a cut line is made in the material placing plate 2b on the material table 2.

Thereafter, the material 1 is transferred to the material placing plate 2
b) and put it on the fence 3 so that the marking line previously written on the material 1 is aligned with the cut line of the material table 2.

The portable circular saw 4 is put on the guide rail 5 again to start the motor, and the platen 4b is slid along the guide rail 5 from the front side to the rear side of the guide table. The saw blade 4a cuts the material 1 at its lowermost part.

Since the portable circular saw 4 is merely mounted on the guide rail 5, the portable circular saw 4 can be lifted off from the guide table immediately after the cutting operation on the guide table is completed and used for other operations.

In the above embodiment, the base 4b is slid along the ridge 5a of the guide rail 5, but a recess is formed in the base 4b, and this recess is formed along the ridge 5a of the guide rail 5. You may make it do. Further, in the above-described embodiment, one ridge 5a is formed, but a plurality of ridges 5a can be formed.

[0036]

According to the first aspect of the present invention, a horizontal material table on which a material is placed, a fence for applying the material, and a guide rail for horizontally guiding a portable circular saw arranged so as to straddle the material table. In the portable circular saw guide table provided on the base, the material base is mounted on the base so as to be able to move up and down, and the guide rail is mounted on the base so as to maintain a constant height, Since the guide table for the portable circular saw has a horizontal guide surface and a vertical guide surface on which the surface plate of the portable circular saw slides while being in contact with the guide rail, the precision can be achieved without assembling the portable circular saw itself to the guide table. Can be easily performed, and only the portable circular saw can be taken out and immediately used for another cutting operation. In addition, since the guide rail is mounted at a fixed height on the base without a vertical movement mechanism or the like, the portable circular saw can completely traverse the material base, so that a large effective cutting width is secured. be able to. In addition, since the adjustment between the guide rail and the material table for changing the cut depth is performed by moving the material table up and down, the guide rail and the base supporting the guide rail can be downsized and simplified.

According to the second aspect of the present invention, since the guide rail is mounted on the base so as to be rotatable in a horizontal plane, the guide table is provided for a portable circular saw. By rotating and adjusting the rail to a desired angle, the material can be cut at a desired angle. Further, since the guide rail is mounted at a fixed height on the base without interposing the vertical movement mechanism, the rotation adjustment mechanism of the guide rail can be simplified.

According to the third aspect of the present invention, there is provided the guide table for a portable circular saw according to claim 1, wherein a portion of the material table in contact with the saw blade of the portable circular saw is formed of a cutable material. Therefore, the marking line of the material can be adjusted to the cut of the material table previously cut with a saw blade, so that the positioning of the material can be performed easily and quickly.

According to the fourth aspect of the present invention, the material table is supported on the base by a parallel crank mechanism, and the elevating shaft is obliquely bridged between both cranks via a rotating shaft, respectively. The portable circular saw guide table according to claim 1, wherein the lifting shaft is engaged with one of the rotating shafts via a screw and is engaged with the other rotating shaft so as to be rotatable only. The elevating shaft can be installed in a direction that facilitates the elevating operation, and can be installed so as not to hinder the cutting operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a guide table for a portable circular saw according to the present invention.

FIG. 2 is a plan view of the portable circular saw guide table shown in FIG. 1;

FIG. 3 is a right side view of the portable circular saw guide table shown in FIG. 1;

FIG. 4 is a front view of the portable circular saw guide table shown in FIG. 1;

FIG. 5 is a rear view of the portable circular saw guide table shown in FIG. 1;

FIG. 6 is a sectional view taken along line VI-VI in FIG. 2;

FIG. 7 is a sectional view taken along line VII-VII in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Material 2 ... Material stand 3 ... Fence 4 ... Portable circular saw 4a ... Saw blade 4b ... Surface plate 5 ... Guide rail 6 ... Base 12a, 12b, 12c, 12d ... Crank 13a, 13b ... Rotating shaft 14 ... Elevation Shaft 14a: Male screw 15: Female screw 31: Vertical guide surface 32: Horizontal guide surface

Claims (4)

[Claims] 1. A portable round provided with a horizontal material table on which a material is placed, a fence for applying the material, and a guide rail for horizontally guiding a portable circular saw arranged so as to straddle the material table on a base. In the saw guide table, the material table is mounted on the base so as to be able to move up and down, the guide rail is mounted on the base so as to maintain a constant height, and a portable circular saw is mounted on the guide rail. A guide table for a portable circular saw, wherein a horizontal guide surface and a vertical guide surface are formed so that the board slides while contacting. 2. The portable circular saw guide table according to claim 1, wherein the guide rail is mounted on the base so as to be rotatable in a horizontal plane. 3. The portable circular saw guide table according to claim 1, wherein a portion of the material table in contact with the saw blade of the portable circular saw is formed of a cutable material. 4. The material table is supported on the base by a parallel crank mechanism, and an elevating shaft is obliquely bridged between the two cranks via a rotating shaft, and the elevating shaft is rotated one way. The guide table for a portable circular saw according to claim 1, wherein the guide table is engaged with the shaft via a screw and is rotatably engaged with the other rotation shaft.