JPH07304001A - Base of portable circular saw - Google Patents

Abstract

PURPOSE:To make the exact cutting to a marking line possible even when the diameter of a rotary cutter different from that of the conventional cutter is employed or the depth of cut is changed from the conventional one by a method wherein the relative positional relationship between the position of the cutting edge of the rotary cutter and the marking line is grasped. CONSTITUTION:In a groove 6 on the base side face part of a portable circular saw, a movable marking part 5 for grasping the relative positional relationship between the position of the tip of a rotary cutter 2 and marking lines 4 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base of a portable round which can be easily fitted to a score line.

[0002]

2. Description of the Related Art The prior art is shown in FIGS. The conventional portable round base 1 is provided with a sumi wire guide groove 8 and a hole 9 for indicating the position of the cutting edge at the time of maximum cutting in a specific cutting tool diameter. Therefore, when the diameter of the cutting tool is changed or the cutting depth shown by the dotted line in FIG. 6 is changed, there is currently no mark indicating the position of the cutting edge.

In this state, when cutting is stopped in the middle of the material to be cut 3 such as a window punching operation (FIG. 7) in which a portion of the material to be cut 3 is cut into a quadrangle to accommodate a switch box or the like, the position of the cutting edge is set. There is a problem that it is difficult to align with the smear line 4 because there is no mark.

[0004]

The conventional portable circular saw is one in which the material 3 to be cut is cut at the maximum cutting depth shown by the solid line in FIG. The blade 2 is cut from the lower surface of the material 3 to be cut as shown by the dotted line in FIG.
There are times when cutting is done with a little left out. As shown in FIG. 7, when the cutting is stopped midway due to the window cutting work or the like, it may occur in the work.

At this time, in the conventional portable round base 1, the smire guide groove 8 on the side surface of the base 1 coincides with the blade edge position of the blade 2 at the time of maximum incision, and the blade edge of the blade 2 is guided by the guide groove 8. Although the position can be confirmed, when the cutting tool diameter is changed or the cutting depth is changed, the Sumi-wire guide groove 8 of the base 1 and the cutting-edge position of the cutting tool 2 do not match and the cutting-edge position becomes unclear, so that the sumi-line alignment There was a problem that it would be difficult.

An object of the present invention is to enable accurate cutting work even when the cutting is stopped halfway through the material to be cut such as when attaching rotary blades having different diameters or when performing window cutting work. is there.

[0007]

The above-mentioned object is achieved by providing a movable mark for indicating the position of the cutting edge of the rotary cutting tool in the groove on the side surface of the base.

[0008]

With the base constructed as described above, the relative positional relationship between the blade edge position of the rotary blade and the sumi-line can be grasped, and even if a rotary blade with a different diameter is attached or the cutting depth is changed, Since a movable mark indicating the position of the cutting edge of the cutting tool is provided, accurate cutting up to the smire line is possible.

[0009]

EXAMPLE An example of the present invention is shown in FIGS. A movable mark portion 5 indicating the position of the cutting edge of the rotary blade 2 is provided in the groove 6 on the side surface of the base 1.

The structure of the mark portion 5 indicating the position of the cutting edge is shown in FIGS. The mark portion 5 made of a resin molded product is loosely fitted in the groove portion 6 on the side surface of the base 1 to make the mark portion 5 movable.

The mark portion 5 is provided with an arrow 7 indicating the position of the cutting edge of the rotary blade 2 so that even if the rotary blade 2 having a different diameter is attached or the cutting depth is changed, the position of the blade edge can be moved by moving the mark portion 5. So that arrow 7 can be used.

With the above-described structure, the relative positional relationship between the blade edge position of the rotary blade 2 and the sumi wire 4 can be grasped, and the rotary blades 2 having different diameters can be attached or the cutting depth can be changed. It is possible to accurately cut up to the score line 4.

[0013]

According to the present invention, by providing a movable mark portion in the groove on the side surface of the base of the portable round, it is possible to grasp the relative positional relationship between the blade tip position of the rotary blade and the sumi line. Even if rotary blades with different diameters are attached or the cutting depth is changed, accurate cutting up to the sumi line is possible.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a top view of FIG.

FIG. 3 is a top view showing an embodiment of the present invention base.

FIG. 4 is a side view of FIG.

5 is a sectional view taken along line AA of FIG.

FIG. 6 is a front view showing an example of a conventional portable circle.

7 is a top view of FIG.

FIG. 8 is a top view of the base of FIG.

9 is a side view of FIG.

[Explanation of symbols]

1 is a base, 2 is a rotary blade, 3 is a material to be cut, 4 is a sumi wire, 5 is a mark portion, 6 is a groove, 7 is an arrow, 8 is a sumi wire guide groove, and 9 is a hole.

Claims (1)

[Claims] 1. A portable circular saw equipped with a housing containing a driving electric motor, a rotary blade driven by the electric motor, and a base that slides on a material to be cut, the side portion of the base. A base for a portable circular saw, which is provided with a movable mark portion for indicating the position of the cutting edge of the rotary blade.