JPH10146718A - Cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately cut even a pipe material different in a diameter by the same operation, and improve safety, operability and workability by extending a base in the shaft direction of the pipe material, arranging a projecting part extending downward at a right angle at the bottom of the base, and forming the base in an almost T shape. SOLUTION: First of all, a lug 8 is loosened, and a notch depth is most reduced, and a tip tool 2 is placed on a pipe material 9 so as to be positioned in a cutting place by preventing it from projecting from an under surface of a base 5. At this time, an outer periphery of the pipe material 9 is sandwiched by a right-angled surface by the base 5 and a projecting part 55. The tip tool 5 is rotated in this condition, and when a main body 1 is pushed down, a piece 3 coming into contact with the outer periphery of the pipe material 9 imparts rotary force to a safety cover 33, and cuts the pipe material 9 while rotating the safety cover 33 when the main body 1 is pushed down. At maximum notch time, the lug 8 is loosened, and the base 5 and the main body 1 are integrated, and hands are released from the base 5, and when the pipe material 9 is rotated in the arrow A direction, the pipe material 9 can be cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting machine for cutting a pipe or the like using a portable electric circular saw.

[0002]

2. Description of the Related Art Conventionally, as such a pipe cutting machine, as described in Japanese Utility Model Publication No. 3-33384, a base provided at a lower portion of a main body is divided near a rotary blade axis and folded in a square shape. There has been a cutting machine that bends and cuts along the outer peripheral surface of a pipe.

[0003]

In the cutting machine, a cutting portion of a pipe is provided with a low end at a front end of a base or a front end of the base.
The pipe is cut with a rotating blade such as a circular saw, but the reaction force generated at the start of cutting acts on the main body, making the main body unstable and the main body And it was dangerous for workers. In addition, every time the diameter of the pipe to be cut was different, the angle of the base had to be adjusted. An object of the present invention is to eliminate the above-mentioned disadvantages of the conventional cutting machine and to provide a safe and easy-to-operate cutting machine.

[0004]

An object of the present invention is to form a base in contact with a pipe material in a T-shape in which an axially extending base protrudes from a side of a main body and a convex portion extending downward at a right angle is provided at the bottom. This is achieved by attaching a piece for smoothly rotating the safety cover to the safety cover.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS.
The present invention will be described with reference to FIG. The main body 1 covers the tip tool 2 so as to be rotatable around the axis of the tip tool 2 and a saw cover for storing and holding a motor, a gear for connecting the power of the motor to the tip tool 2 such as a circular saw, and the like. The safety cover 33 and the safety cover 3 for rotating the safety cover 33
3 comprises a piece 3 attached to the handle 3 and a handle 4 in which a switch is embedded. Reference numeral 5 denotes a base, which extends so as to protrude from the side of the main body 1 in the axial direction as shown in FIG. 2, and has a convex portion 55 extending substantially perpendicular to the base 5 at the rear bottom. . The base 5 is rotatably supported at its distal end by the main body 1 in the same manner as a normal electric circular saw, and its rear part is connected to the main body 1 by a bolt 7 and a knob 8 via a link 6.
It is pinched. 9 is a pipe material to be cut, and 10 is a pipe cradle.

Next, a cutting method will be described. First, the knob 8 is loosened so that the cutting depth is minimized, and the tip tool 2 is placed on the pipe material 9 so that the tip tool 2 is located at the cutting position while preventing the tip tool 2 from protruding from the lower surface of the base 5. At this time, the outer periphery of the pipe material 9 is
This causes the sheet to be sandwiched between right-angled surfaces (see FIG. 3).

In this state, the switch is turned on, the tip tool 2 is rotated, and the main body 1 is pushed down. At this time, an operation of holding down the base 5 with one hand and pressing down the main body 1 so as to push off the pipe material 9 with the other hand is performed. Since the piece 3 in contact with the outer periphery of the pipe member 9 applies a rotating power to the safety cover 33, the pipe member 9 is cut while rotating the safety cover 33 when the main body 1 is pushed down. At the time of the maximum cutting, the knob 8 is tightened to fix and integrate the base 5 and the main body 1, and the pipe 9 is cut by releasing the base 5 and rotating the pipe 9 in the direction of arrow A (FIG. 4). FIG. 5 is a diagram showing a cutting state when the pipe member 9 has the maximum diameter. The figure shows that cutting is performed at a maximum when the main body 1 is slightly pressed down, and thereafter the pipe member 9 is cut while rotating.

According to the above-described embodiment, the base 5 extends so that the axial direction of the pipe member 9 protrudes from the side of the main body 1.
The outer peripheral direction of the pipe material 9 is the base 5 and the projection 5
5, the pipe member 9 is securely pressed down, the gap between the pipe member 9 and the base 5 disappears, and even if the pipe member 9 is rotated, the main body 1 is pressed.
Does not occur in the axial direction. Further, by pressing the base 5, the reaction force acting on the main body 1 at the start of cutting can be suppressed. Further, by attaching the piece 3 to the safety cover 33, even if the diameter of the pipe material 9 is different, the end of the piece 3 abuts on the outer periphery of the pipe material 9 and the safety cover 33
Can be given a smooth rotation and can be cut safely and accurately.

In the above embodiment, the base 5 and the projection 55 are integrally formed. However, as shown in FIG.
3 and the safety cover 15
By attaching the piece 16 to the conventional electric circular saw 11 already existing, the present invention can be easily adopted.

[0010]

As described above, according to the present invention, even pipe materials having different diameters can be cut accurately by the same operation, thereby improving safety, operability and workability.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the cutting machine of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a side view showing a state immediately before a cutting operation is started by the cutting machine of the present invention.

FIG. 4 is a side view showing a state at the time of maximum cutting in the cutting machine of the present invention.

FIG. 5 is a side view showing a state where a pipe member having a maximum diameter is being cut.

FIG. 6 is a side view showing another embodiment of the present invention.

[Explanation of symbols]

1 is a main body, 2 is a tip tool, 3 is a piece, 5 is a base, 9
Is a pipe material, 13 is a right angle member, 33 is a safety cover, 55
Is a convex part.

Claims (3)

[Claims] An electric motor includes a main body that houses and supports a power tool and a tool driven by the motor, and a base that is rotatably attached to the main body. A cutting machine for cutting a pipe material in which a cutting depth is adjusted by changing an amount to be cut, wherein a base extending along an axial direction of the pipe material and a convex portion extending perpendicularly downward at a bottom of the base are provided, A cutting machine characterized in that the base is formed in a substantially T-shape. 2. The cutting machine according to claim 1, wherein a detachable right-angled member is attached to the bottom of the base to form the base in a substantially T-shape. 3. A cutting machine according to claim 1, wherein a piece for rotating the safety cover in contact with a pipe material for the safety cover covering the tip tool protruding from below the base is attached. .