JPH11300702A - Electric circular saw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select whether importance is to be set on a precise straight cutting state or on a workability by a method wherein the inner span of the recessed part of a guide plate is made larger than the outer span of the projected part of a straightedge and further an adjusting member, which is movable normal to the cutting direction, is provided within the recessed part of the guide plate. SOLUTION: The inner span of the recessed part 9 of a guide plate 7 is made larger than the outer span of the projected part of a straightedge 3. In addition, the inner span of the recessed part 9 is controlled by moving an adjusting member 6 normal to a cutting direction. A precise straight cutting state can be obtained by making the inner span of the recessed part 9 nearly the same span as the outer span of the projected part 5 of the straightedge 3 by adjusting the adjusting member 6 so as to make the gap between the projected part 5 and the recessed part 9 as small as possible. When the adjusting member 6 is adjusted so as to make the gap between the projected part 5 and the recessed part 9 larger, the lowering of workability can be prevented. Further, even when a straightedge has the outer span of the projected part different from the above-mentioned one, a precise straight cutting state is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric circular saw that can be cut using a straight ruler disposed on a workpiece and having a convex portion extending in a longitudinal direction on an upper surface.

[0002]

2. Description of the Related Art One of the methods for enabling a workpiece 13 to be cut straight by an electric circular saw is as follows.
As shown in FIG. 1, there is a method of performing cutting using a straight ruler 3 having a convex portion 5 disposed on a workpiece 13 and extending in a longitudinal direction on an upper surface. In the cutting operation using the linear ruler 2, the guide member 4 having the concave portion 9 to be fitted to the convex portion 5 of the linear ruler 3 is attached to the circular saw body 1, and as shown in FIG.
By performing the cutting operation while fitting the convex portion 5 of the straight ruler 3 and the concave portion 9 of the guide member 4 arranged on the
Since the movement of the circular saw body 1 in the direction perpendicular to the cutting direction of the saw blade 2 is regulated by the convex portion 5 provided on the straight ruler 3, the workpiece 13 can be cut straight.

A conventional guide member 4 extends parallel to the cutting direction of the saw blade 2 and has a guide plate 7 having a concave portion 9 which can be fitted with the convex portion 5 of the straight ruler 3, and one end of the guide plate 7. And a guide bar 8 whose other end extends in a direction perpendicular to the cutting direction and is mounted on the base 14.

[0004]

The conventional electric circular saw described above has a recess 9 of the guide member 4 so that the circular saw main body 1 can be easily slid on the straight ruler 3. When the projection 5 and the projection 5 of the straight ruler 3 are fitted to each other, a slight gap is formed between the projection 5 and the recess 9.
There was a disadvantage that the circular saw body 1 was slightly rattled during the cutting operation, so that an accurate linear cutting state could not be obtained. On the other hand, if the gap between the convex portion 5 and the concave portion 9 is made as small as possible in order to obtain an accurate linear cutting state, it is difficult to slide the circular saw body 1 on the linear ruler 3. Therefore, there was a disadvantage that workability was poor. That is, depending on the work content, there are cases where importance is placed on obtaining an accurate linear cutting state rather than workability, and cases where importance is placed on workability over obtaining an accurate linear cutting state. Circular saws cannot be selected, and have the drawback that accurate linear cutting work cannot be obtained or workability is poor.

The outer diameter of the convex portion 5 may vary depending on the type of the straight ruler 3. If the inner diameter of the concave portion 9 is smaller than the outer diameter of the convex portion 5, cutting using the straight ruler may be performed. If the inner diameter of the concave portion 9 is larger than the outer diameter of the convex portion 5, the gap between the convex portion 5 and the concave portion 9 becomes large, and the circular saw main body 1 is rattled during the cutting operation, so that accurate linear cutting is performed. There was a drawback that a state could not be obtained. An object of the present invention is to solve the above-mentioned drawbacks and to use a straight line ruler in which it is possible to select whether to attach importance to obtaining an accurate linear cutting state or to attach importance to workability and to have different outer diameters of the convex portions. An object of the present invention is to provide an electric circular saw capable of obtaining an accurate linear cutting state even when cutting is performed.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a guide member in which the inner diameter of a concave portion of a guide plate is formed to be larger than the outer diameter of a convex portion of a linear ruler, and the concave portion of the guide plate is formed in the concave portion of the guide plate in a cutting direction. This is achieved by providing an adjustment component which is movable in a right angle direction.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the electric circle of the present invention will be described with reference to FIGS. FIG. 2 is an enlarged exploded view of part X of FIG. 1 constituting the electric circular saw of the present invention, and FIG.
It is a sectional view equivalent to a line. As shown in the figure, an adjustment component 6 located in a recess 9 is attached to a guide plate 7 constituting the guide member 4 by a screw 5. The adjusting component 6 is formed in a U-shape as can be seen from FIG. 3, and has an elongated hole 10 extending in a direction perpendicular to the cutting direction near both ends. Screw holes 11 are provided at both end surfaces of the guide plate 7 where the elongated holes 10 of the adjustment component 6 are located. The screws 12 are screwed into the screw holes 11 through the elongated holes 10 of the adjustment component 6. The adjustment component 6 is attached to the guide plate 7.

The inner diameter of the concave portion 9 of the guide plate 7 is formed larger than the outer diameter of the convex portion 5 of the straight ruler 3.
The inner diameter of the concave portion 9 expands and contracts by moving the adjustment component 6 in a direction perpendicular to the cutting direction, that is, in a direction C shown in FIG.

With the above-described configuration,
When performing a cutting operation using the straight line ruler 3, select whether to place importance on obtaining an accurate linear cutting state rather than operability, or on whether operability is more important than obtaining an accurate linear cutting state. Will be able to That is, the protrusion 5
So as to minimize the gap generated between
When the adjusting part 6 is adjusted so that the inner diameter of the concave portion 9 is substantially the same as the outer diameter of the convex portion 5 of the linear ruler 3, an accurate linear cutting state can be obtained. Adjusting the adjusting component 6 so that the generated gap becomes large can prevent a decrease in workability. Adjustment of the adjustment part 6 is performed with the screw 1
This can be performed by fitting the concave portion 9 to the convex portion 5 with the 2 loosened, moving the adjustment component 6 in the C direction to adjust the inner diameter of the concave portion 9, and then tightening the screw 12.

Incidentally, even when the type of the straight ruler 3 is different and the outer diameter of the convex portion 5 is different, if the inner diameter of the concave portion 9 is adjusted by moving the adjusting component 6 in the C direction similarly to the above-described embodiment. A straight cutting state can be obtained.

[0011]

According to the present invention, the inner diameter of the concave portion of the guide plate constituting the guide member is formed to be larger than the outer diameter of the convex portion of the linear ruler, and the direction perpendicular to the cutting direction is formed in the concave portion of the guide plate. The movable ruler has a configuration that can be moved to a different position, so you can select whether to emphasize accurate linear cutting state or to emphasize workability. It is possible to provide an electric circular saw capable of obtaining an accurate linear cutting state even when performing cutting using the electric circular saw.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a working state of an electric circle.

FIG. 2 is an enlarged exploded view of a part X in FIG. 1 showing one embodiment of a guide member constituting the electric circular saw of the present invention.

FIG. 3 is a view corresponding to a cross section taken along line AA of FIG. 2;

FIG. 4 is an enlarged exploded view of a main part showing an example of this guide member of a conventional electric circle.

[Explanation of symbols]

1 is a circular saw main body, 2 is a saw blade, 3 is a straight ruler, 4 is a guide member, 5 is a convex part, 6 is an adjusting part, 7 is a guide plate, 8 is a guide bar, 9 is a concave part, and 10 is a long part. A hole, 11 is a screw hole, 12 is a screw, 13 is a workpiece, and 14 is a base.

Claims (2)

[Claims] 1. A base, a saw blade for cutting a material to be cut at a portion projecting below the base, and a drive source such as a motor for rotatably supporting the saw blade and driving the saw blade. And a circular saw main body mounted on the base, a straight ruler disposed on the workpiece and having a convex portion extending in the longitudinal direction on the upper surface, and a straight line extending parallel to the cutting direction of the saw blade, and a straight line. A guide plate having a concave portion engageable with the convex portion of the ruler, a guide member having one end mounted on the guide plate and the other end extending in a direction perpendicular to the cutting direction and being mounted on a base; An electric circular saw, in which an inner diameter of the concave portion of the guide plate is formed to be larger than an outer diameter of the convex portion of the linear ruler, and an adjusting part movable in a direction perpendicular to the cutting direction in the concave portion of the guide plate. Featured This determined. 2. The adjusting component is formed in a U-shape, and an elongated hole extending in a direction perpendicular to the cutting direction is provided near both ends of the adjusting component, and screw holes are provided on both end surfaces of the guide plate. 2. The electric circular saw according to claim 1, wherein the adjusting component is attached to the guide plate via a long hole by a screw member.