JPH085768Y2 - Jig for cutting and positioning electric circular saw - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an electric circular saw, and more particularly to a cutting positioning jig for defining a cutting position.

[Prior Art] In the manufacture of fittings and the like, an electric circular saw is used in order to efficiently cut square members and the like.

For example, in the manufacturing process of joinery, the frame is configured with the upper and lower ends of the vertical frame projecting from the horizontal frame, and these projecting parts (corners) are used to facilitate the work of attaching flat plates and the like. are doing.

FIG. 3 shows a frame of such a fitting,
Both ends of the vertical frames 31 and 33 are the lower surface 32a of the lower frame 32 and the upper surface of the upper frame 34.
It projects from 34a. These protrusions 31a, 31
Since b, 33a, 33b are finally unnecessary, for example, the protruding piece 31a is cut along the planned cutting line 31c so as to be flush with the lower surface 32a of the lower frame 32, and the lower end of the vertical frame 31 is cut. The part is flush with the lower surface 32a of the lower frame 32. Cutting of such a part is usually performed using a hand saw or an electric circular saw.

[Problems to be solved by the invention] However, it is difficult to accurately cut the vertical projecting portion of the vertical frame using the electric circular saw so as to be flush with the upper and lower frames. I need. Also, using a hand saw requires a considerable amount of time and effort.

In view of this point, an object of the present invention is to realize a cutting positioning jig capable of accurately performing cutting work by an electric circular saw without requiring skill.

[Means for solving the problem]

In order to solve the above-mentioned problems, a cutting and positioning jig for an electric circular saw according to the present invention is a cutting and positioning jig for an electric circular saw used for cutting a protruding portion protruding from a flat end surface, A guide plate having a guide surface parallel to a plane including circular saw teeth of an electric circular saw, and a slide ruler supporting the guide plate so as to be slidable in a direction parallel to the plane on the front side of the circular saw. And a fixing member capable of fixing the guide plate to the slide ruler.

[Action]

In the electric circular saw jig of the present invention, the position of the guide plate on the slide ruler was adjusted so that the protruding portion from the flat end surface to be cut was located between the guide plate of the cutting positioning jig and the circular saw teeth. Then, this guide plate is fixed thereto by the fixing member. When the guide surface of the guide plate is pressed against the flat end surface, the circular saw teeth are automatically set on the plane including the flat end surface. When rotating the electric circular saw in this state and moving it forward, the circular saw teeth advance along the flat end face against which the guide surface is pressed, so cut the protruding part so that it is flush with the flat end face. To be done.

〔Example〕

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

FIG. 1 is a perspective view of the electric circular saw of this example. As shown in the figure, the electric circular saw 1 has a circular saw body 2, a slide ruler 3 attached to the front side of the circular saw body 2, and a guide plate 4 slidably attached to the slide ruler 3. The ruler 3 and the guide plate 4 constitute a cutting and positioning mechanism.

The base of the slide ruler 3 is fixed to an L-shaped metal fitting attached to the front upper surface 5a of the bracket 5 of the circular saw body. This L-shaped metal fitting is mounted on the front upper surface 5a of the bracket 5 so as to be slidable in a direction orthogonal to the slide ruler 3 and can be fixed at a predetermined slide position by a fastening bolt or the like. ing. The slide ruler 3 extends forward in parallel with a vertical plane including the circular saw teeth 6 of the circular saw body 2 and parallel with a horizontal plane including the bracket 5. V-grooves 3a and 3b are formed on the upper surface and the lower surface of the slide ruler 3, respectively.
Notches 3c are formed on the slope forming the groove 3a at regular intervals in the longitudinal direction.

On the other hand, the guide plate 4 is formed with a slide portion 41 that slides along the slide ruler 3 on the back surface side, and a guide portion 42 for defining the cutting position of the circular saw tooth 6 on the front surface side. There is.

The slide portion 41 is formed with a groove 41a into which the slide ruler 3 can be slid. Triangular protrusions 41b and 41c that match the upper and lower V grooves 3a and 3b of the slide ruler 3 are formed in the groove 41a. Therefore, the guide plate 4 can slide along the ridgeline of the V groove of the slide ruler 3 without swinging left and right. A set screw 41d is attached to the slide portion 41. By screwing this screw 41d, the tip of the screw 41d can be engaged with the notch 3c on the upper surface side of the slide ruler 3.

On the other hand, the guide portion 42 has a positioning guide surface set so as to be located on the same plane as the vertical plane including the circular saw teeth 6.
42a is formed.

Next, the cutting work by the electric circular saw 1 of this example will be described for the case where the projecting portion 31a of the frame 30 of the fitting shown in FIG. 3 is cut along the planned cutting line 31c.

FIG. 2 is a plan view showing a state in which the circular saw teeth 6 of the electric circular saw 1 are positioned on the planned cutting line 31c of the protruding portion 31a.

First, the set screw 41d attached to the slide portion 41 of the electric circular saw 1 is loosened so that the protruding portion 31a to be cut is located between the circular saw teeth 6 of the electric circular saw 1 and the guide plate 4 Slide the guide plate 4 on. Then, the set screw 41d is screwed in and locked in the notch 3c on the slide ruler 3 side to fix the guide plate 4.

Next, the positioning guide surface 42a of the electric circular saw 1 is pressed against the cutting reference surface 32a which is the lower surface 32a of the lower frame 32. As a result,
The circular saw teeth 6 are automatically set on the vertical plane including the cutting reference plane 32a, and the circular saw teeth 6 are positioned at the planned cutting line 31c.

When the electric circular saw 1 is operated in this state and the electric circular saw 1 is moved forward, the circular saw teeth 6 move along the planned cutting line 31c. Therefore, the lower end of the vertical frame 31 is
Is cut flush with the lower surface 32a.

As described above, according to the electric circular saw according to this example, the circular saw teeth 6 can be automatically set to the planned cutting line 31c and can be accurately cut along the planned cutting line 31c. Therefore,
Even without requiring skill, the protruding portion can be accurately cut so that the flat end surface becomes flush.

Here, when cutting the wide projecting portion, the set screw 41d is loosened and the guide plate 4 is slid to widen the gap between the circular saw teeth 6 and the guide plate 4, and the wide projecting portion is inserted between them. You can do it like this.

Further, by sliding the L-shaped metal fitting that supports the slide ruler 3, the distance between the circular saw 6 and the positioning guide plate 4 can be adjusted. Further, if the thickness of the guide plate 4 is changed, or if a mechanism for moving the positioning guide plate 4 in parallel with the circular saw tooth 6 to change the relative distance between them is attached, it projects from the flat end face. It is also possible to cut the part along a plane at a distance from its flat end face.

[Effect of device]

As described above, the cutting and positioning jig for the electric circular saw according to the present invention has the guide surface that coincides with the plane including the circular saw teeth. Therefore, by pressing the guide surface against the flat end surface that defines the planned cutting line, the circular saw teeth are automatically set on the plane including the flat end surface, and the electric circular saw is advanced in this state. By doing so, the circular saw tooth moves according to the planned cutting line, so that the projecting portion can be accurately cut along the planned cutting line without requiring skill.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric circular saw according to an embodiment of the present invention. FIG. 2 is a plan view for explaining a method of using the electric circular saw according to the embodiment of the present invention. FIG. 3 is a perspective view of the frame of the fitting. [Explanation of symbols] 1 …… Electric circular saw 2 …… Circular saw body 3 …… Slide ruler 4 …… Guide plate 5 …… Bracket 6 …… Circular saw tooth 41 …… Slide part 41a …… Groove 41d …… Set screw (Fixing member) 42 ... Guide part 42a .... Positioning guide surface (guide surface).

Claims (1)

[Scope of utility model registration request] 1. A cutting and positioning jig for an electric circular saw used to cut a protruding portion protruding from a flat end surface, the jig having a guide surface parallel to a plane including circular saw teeth of the electric circular saw. Guide plate, a slide ruler supporting the guide plate slidably in a direction parallel to the plane on the front side of the circular saw, and a fixing plate for fixing the guide plate to the slide ruler. A jig for cutting and positioning an electric circular saw, which has a member.