JPH033361Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Field of application of invention] The present invention relates to an arm saw.

[Background of the idea]

Conventionally, arm saws have circular saws that move horizontally, and were used for cross-cutting workpieces, but they cannot be used for vertical cutting or grooves such as sills, and miter saws (tabletop circular saws) In this way, it was unsuitable for quick cross-cutting of small materials.

[Purpose of invention]

This invention was created in view of the above points,
The object of the present invention is to provide an arm saw capable of quickly cross-cutting, vertical sawing, grooving, and back splitting of small materials.

[Summary of the idea]

That is, the present invention includes a base, a rotatable turntable provided on the base, an arm holder connected to a part of the base, an arm having one end fixed to the arm holder, and the arm holder. The machine includes a slidable head that is inserted into the arm and slides on the arm, and a motor housing that is connected to the lower part of the head and has a circular saw, and a fence that guides the workpiece on the base. In the arm saw, the base and the arm holder are arranged such that the arm holder is supported between the base and the arm holder so as to be able to move up and down and swing freely.
The motor housing is characterized in that the head and the motor housing are connected by providing a second support means between them for rotatably supporting the motor housing. This allows the arm holder to move up and down and swing freely, and the motor housing to rotate.

[Example of idea]

Hereinafter, the present invention will be explained based on the illustrated embodiments. An embodiment of the present invention is shown in FIGS. 1 and 2. FIG. As shown in the figure, the arm saw includes a base 1, a rotatable turntable 2 provided on this base 1, an arm holder 3 connected to a part of the base 1, and this arm holder 3.
an arm 4 having one end fixed to the arm 4; a slidable head 5 inserted into the arm 4 and sliding on the arm 4; connected to the lower part of the head 5;
It also includes a motor housing 7 having a circular saw 6 and the like. A fence 8 is provided on the base 1 to guide the workpiece. In the figure, 9 is a knob for fixing the turntable 2, and 10 is a knob for fixing the turntable 2.
is a holder fixed to the other end of the arm 4; 11 is a handle connected to the holder 10; 12 is a handle provided on the head 5; 13 is provided on the head 5 so that the head 5 can be slid onto the arm 4; It is a knob that fixes it. In this embodiment of the arm saw configured as described above, the base 1 and the arm holder 3 are connected by providing a first support means between them for supporting the arm holder 3 in a vertically movable and swingable manner. The head 5 and the motor housing 7 are connected by providing second support means between them for rotatably supporting the motor housing 7. By doing this, base 1 and arm holder 3
The head 5 and the motor housing 7 are connected by providing a first support means between them to support the arm holder 3 in a vertically movable and swingable manner.
A second support means for rotatably supporting the motor housing 7 is provided between the two, and the arm holder 3 is able to move up and down and swing freely, and the motor housing 7 is rotatable. Become,
It is possible to obtain an arm saw that enables quick horizontal cutting, vertical sawing, grooving, and back splitting of small materials.

That is, although the first and second supporting means are provided, the first
A column holder 16 is provided approximately midway between a rotatable hinge 14 provided on the base 1 and the arm holder 3, and is connected to the hinge 14 via a column 15, and is movable up and down.
A feed screw 17 is provided between the column holder 16 and the arm holder 3 in parallel with the column 15 and moves the column holder 16 up and down, and a feed screw 17 is provided between the column holder 16 and the arm holder 3 and rotates between them. It is formed of a rotatable hinge shaft 18 that is rotatably supported, and a removable pin 19 that is provided on the hinge shaft 18 and that prevents rotation and positions the column holder 16 and arm holder 3.
When the pin 19 is attached, the arm 4 is positioned parallel to the turntable 2. It is also fixed to column 15, hinge 14 and column 1.
Key 20 and column 15 to prevent rotation with 5
A knob 21 is provided to fix the feed screw to the hinge 14, a handle 22 is provided to the feed screw 17, and the column holder 16 is moved up and down by rotation of the handle 22. Note that the feed screw 17 is screwed into the hinge 14. Further, a lever 23 for fixing the arm holder 3 and the column holder 16 is provided, and a spring 24 for pushing the arm holder 3 upward is provided on the hinge shaft 18. The second support means is provided between the head 5 and the motor housing 7, and includes a rotatable screw 25 screwed together between the two, and this screw 25.
The lock lever 26 is connected to the end of the screw 25 and rotates the screw 25. By doing this, the arm holder 3 can be raised, lowered, and swung freely, and the motor housing 7 can be rotated, which allows the arm saw to perform cross-cutting of wide materials.
You will be able to perform quick cross-cutting, vertical pulling, and grooving of small materials.

Pin 1 for quick cross-cutting of small materials
9 is removed, the arm holder 3 is made swingable, the head 5 is moved to an appropriate position, and the knob 13 is tightened to fix the head 5 to the arm 4. Next, the workpiece is pressed against the fence 8, and the handle 11 is pushed down to perform the cutting operation. In this case, the lock lever 26 is tightened to securely fix the head 5 and the motor housing 7 so that the circular saw 6 is positioned at right angles to the fence 8 as shown in the figure. In this way, the circular saw 6 swings about the hinge shaft 18, making it possible to quickly cross-cut a workpiece, such as a small piece of material.

In the case of vertical sawing, that is, vertical cutting of long materials such as columns, loosen the lock lever 26, rotate the motor housing 7 to position the fence 8 and the circular saw 6 in parallel, and then move the motor housing 7 to the head again. Fixed at 5. Next, the head 5 is slid on the arm 4 to obtain a predetermined cutting width, and the knob 13 is tightened to fix the head 5 to the arm 4. Next, the workpiece is moved along the fence 8, and the circular saw 6 is fixed to perform vertical cutting. In this case, it goes without saying that the arm 4 and the turntable 2 should be parallel to each other, but the fence 8 should be placed on the turntable 2.
It is necessary to provide a plurality of relief grooves (not shown) in parallel with the circular saw 6 so that the blade edge of the circular saw 6 is located slightly below the top surface of the turntable 2, as in the case of vertical sawing. When cutting grooves, the arm 4 and turntable 2 are held parallel as described above, and the lock lever 26 is used to position the circular saw 6 at right angles to the fence 8 as shown in the figure. and fix it. Handle 22
is rotated to lower the arm 4, set a predetermined grooving depth, and perform grooving. In this way, the groove cutting cutter usually has a small outer diameter, so it is possible to cut the groove. Moreover, by rotating the handle 22 and raising the circular saw 6, it is possible to split the backs of pillar materials, frame materials, and the like. In this way, the 6 parts of the circular saw rotate,
It also rises, making it possible to perform vertical sawing, grooving, etc. of processed materials.

Incidentally, when cross-cutting a workpiece, the pin 19 is inserted, the arm 4 and the turntable 2 are placed in a parallel position, and the lever 23 is used to fix the arm 4 and the turntable 2 in parallel. Next, press the workpiece against the fence 8 and press the handle 12.
Pull it toward you, that is, toward the right in the figure, to cut the workpiece. In this case, loosen the knob 13, tighten the lock lever 26, and fix the head 5 and motor housing 7 so that the circular saw 6 is positioned at right angles to the fence 8 as shown in the figure. .

[Effect of idea]

As mentioned above, this invention enables quick cross cutting, vertical sawing, grooving, and back splitting of small materials with an arm saw, and enables quick cross cutting, vertical sawing, grooving, and back splitting of small materials. You can get an arm saw with

[Brief explanation of the drawing]

FIG. 1 is a top view of an embodiment of the arm saw of the present invention, and FIG. 2 is a side view of FIG. 1. 1...bass, 2...turntable, 3...
Arm holder, 4...Arm, 5...Head, 6
...Circular saw, 7...Motor housing, 8...
Fence, 14... Hinge, 15... Column, 1
6... Column holder, 17... Feed screw, 18... Hinge shaft, 19... Pin, 2
5...screw, 26...lock lever.

Claims (1)

[Claims for Utility Model Registration] 1. A base, a turntable rotatably supported on the base in a horizontal plane, an arm holder supported by a part of the turntable, and one end fixed to the arm holder. The arm saw includes an arm, a head slidably attached to the arm, and a motor housing having a circular saw attached to the lower part of the head, and a fence for guiding a workpiece on the base. A first support means is provided between the turntable and the arm holder, which guides the holder to the turntable so as to be freely raised and lowered, and supports the arm holder rotatably in a plane perpendicular to the turntable. and the motor housing, a second support means for rotatably supporting the motor housing in a horizontal plane is provided and connected to the motor housing. 2. The first support means includes a hinge fixed to the lower part of the turntable and rotatable with respect to the base, and a column attached to one end of the hinge so as to be slidable in the vertical direction and having a column holder fixed to the upper end. , a feed screw provided between the hinge and the column holder for raising and lowering the column and the column holder; a hinge shaft for rotatably supporting the arm holder on the column holder in a vertical plane; and a feed screw provided within the hinge shaft. and a removable pin that fixes the arm and the arm holder around the column holder, and the arm is positioned parallel to the turntable when the pin is attached. The arm saw described in item 1. 3. The second support means is connected to a rotatable screw provided between the head and the motor housing and screwed together between the two, and is connected to an end of the screw and rotates the screw. The arm saw according to claim 1, which is formed of a lock lever and a lock lever.