JPH09277118A - Cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply adjust a positioning mechanism. SOLUTION: A metal sheet is divided into a contact piece 11, fitting pieces 12, 12 fitted on the outside faces of a turntable 3, a locking piece 13 extended to the back side of a base 2, and an operation piece 14 extended below an adjusting lever 9 to form a positioning metal 10 provided on the turntable 3. When the fitting pieces 12, 12 are screwed by bolts 16, 16 and washers 17, 17 via oblong holes 15, 15 formed in the horizontal direction, the fitting positions can be finely adjusted in the peripheral direction along the side faces of the turntable 3. Since the bolts 16, 16 and fitting pieces 12, 12 are exposed to the outside, the fitting position of the positioning metal 10 can be finely adjusted simply.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a positioning mechanism for positioning a turntable rotatably mounted on a base by rotating the turntable at an arbitrary angle and locking it. Regarding cutting machine.

[0002]

2. Description of the Related Art As the positioning mechanism for a cutting machine, one disclosed in Japanese Utility Model Laid-Open No. 4-98514 is known. This is because the turntable is provided with a locking means that engages and disengages with the base, while inside the turntable, there is a locking base having a mounting hole for the adjusting bolt as a long hole, and the locking base is directed toward the base side. And a locking member (steel ball) that is urged by a member to form a positioning mechanism, and the locking member is engaged with a locking receiving portion (recess) provided on the base side,
This is for obtaining positioning when the turntable is rotated. Further, the base is provided with a fence that abuts the material to be cut and serves as a guide for cutting. The turntable is positioned at a rotation angle of 0 °, and the angle between the rotary blade and the fence is adjusted by a right angle ruler. At this time, if there is an error in the angle, the engaging position of the locking member is corrected by adjusting the mounting position of the locking base with the elongated hole and the adjusting bolt, and the turntable is rotated by the positioning mechanism. I try to get the angle accurately.

[0003]

In the above positioning mechanism, since the locking base is provided inside the turntable (on the back side of the blade plate), it is difficult to carry out the above adjustment work while applying the right angle ruler. Especially during the above adjustment, the saw blade and blade plate interfere, so move the saw blade upwards,
In some cases, the adjustment bolts could not be operated without removing the blade plate, which reduced workability.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention provides a cutting machine capable of easily adjusting the positioning mechanism with good workability, the structure of which is the positioning mechanism or the locked portion. It is characterized in that adjustment means capable of adjusting a mounting position with respect to the base or the turntable is provided so as to be exposed to the outside. Further, it is desirable that the outside is a side peripheral surface of the turntable on the rotation operation side.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is applied to a tabletop circular saw will be described below with reference to the drawings. In FIG. 1, the tabletop circular saw machine 1 includes a base 2 and a bolt 2 a on the base 2.
A turntable 3 which is rotatably mounted around the main body 4 and a main body 4 which is mounted at its rear end (left side in FIG. 1) so as to be vertically movable around the shaft 4a and biased upward. The main body 4 is provided with a saw blade 5 that rotates with a motor (not shown). A shaft attachment portion 6 between the main body 4 and the rear end of the turntable 3 is connected to the turntable 3 so that the main body 4 can be tilted to the front side orthogonal to the saw blade 5 from the state of FIG. It is possible to fix and release it at any tilt position by operating. Further, reference numeral 8 is a fence that is installed on the left and right of the base 2 so as to pass over the turntable 3, and is used as a guide for pressing and fixing the material to be cut during the cutting operation. An adjusting lever 9 is screwed in front of the turntable 3. When the turntable 3 is rotated, the adjusting lever 9 is gripped and operated, and when the adjusting lever 9 is screwed in at an arbitrary rotation position,
As shown in FIG. 2, the tip 9a presses the side end of the base 2 via the abutment piece 11 of the positioning metal fitting 10 so that the turntable 3 can be locked at that position. Therefore, in the above tabletop circular saw machine 1, when the material to be cut is pressed against the fence 8 and the main body 4 is lowered from the state of FIG. 1, the saw blade 5 becomes a right angle with respect to the contact surface with the fence 8. When the main body 4 is tilted by operating the lock lever 7 at a right angle, the saw blade 5 is tilted sideways, and when the turntable 3 is further rotated by operating the adjusting lever 9, the saw blade 5 moves. By changing the angle in the horizontal direction, an arbitrary angle can be given to the contact surface of the fence 8 to perform angle cutting.

On the other hand, the positioning metal fitting 10 is used for positioning the rotation position of the turntable 3 in the angle cutting. As shown in FIGS. 2 to 4, one metal plate is extended to the contact piece 11, the mounting pieces 12 and 12 attached to the side peripheral surface of the turntable 3, and the back side of the base 2. It is formed on a locking piece 13 provided and an operation piece 14 extending below the adjusting lever 9, and is positioned below the turntable 3 except for the mounting pieces 12 and 12. And the mounting piece 1
2 and 12 are long holes 1 formed horizontally as shown in FIG.
Bolts 16,16, washers 17,
By being screwed by 17, the positioning fitting 10 can finely adjust the mounting position in the circumferential direction along the side surface of the turntable 3. Further, the locking piece 13 has elasticity toward the upper side, and the locking recess 1 formed on the back surface of the base 2
8 or 18 can be locked, but when the operation piece 14 is pulled up, the locking piece 13 moves downward and locks as shown by the chain double-dashed line in FIG. Since it separates from the concave portion 18, the turntable 3 can be arbitrarily rotated in the angle cutting in this state. In FIG. 4, 19 is a scale plate provided on the base 2 and 20 is a turntable 3
Is a needle provided on the side surface of.

In the tabletop circular saw machine 1 constructed as described above, first, the angle between the fence 8 and the saw blade 5 in the right-angle cutting state is adjusted. That is, as shown in FIG. 4, the needle 20 indicates the 0 ° position of the scale plate 19 (of course, at this time, the locking piece 13 of the positioning metal fitting 10 is in the engaged state with the locking recess 18 of the base 2).
Then, the angle between the lowered saw blade 5 and the fence 8 is confirmed with a right-angle ruler or the like. If it deviates slightly from the right angle,
By loosening the bolts 16, 16 on the side of the positioning fitting 10 and shifting the positions of the mounting pieces 12, 12 on the side peripheral surface of the turntable 3, the angle of the saw blade 5 can be finely adjusted, and the right angle to the fence 8 can be accurately adjusted. It becomes possible. Therefore, of course, the right angle cutting can be accurately performed, and the angle with respect to the fence 8 can be accurately obtained even in the angle cutting which is rotated from the right angle state. Further, since the fine adjustment can be easily performed by the bolts 16, 16 exposed on the side peripheral surface of the turntable 3, good operability can be expected.

Further, by exposing the adjusting means by the bolts or the long holes to the outside, there is no limitation on the specific structure of the positioning mechanism, and the positioning member 10 can be connected to the base 2 like the positioning fitting 10 of the above embodiment. It can also be adopted in a structure in which the engagement needs to be manually released. Therefore, the reliability of positioning the base can be further improved. As a structure which requires this manual release, as shown in FIG. 5, bolts 16a, 16a are provided on the lower surface of the turntable 3 through elongated holes 15a, 15a.
Slide plate 21 attached with washers 17a, 17a
In addition, it is conceivable that the pin 23 is biased toward the base 2 side by the compression spring 22 and the tip of the pin 23 is inserted into and removed from the locking recess 18a (or hole) of the base 2. Further, as shown in FIG. 6, bolts 16b, 16 are also formed on the lower surface of the turntable 3 through elongated holes 15b, 15b.
b, slide plate 2 attached with washers 17b, 17b
A lever 24 is rotatably attached to the shaft 1a.
4 is urged downward by the compression spring 25, and the other end 24a is locked by the locking recess 18b of the base 2.
It can also be configured to engage and disengage. In the above embodiment, the positioning metal fitting 10, the pin 23, and the lever 24 are provided on the turntable 3 side, and the corresponding engaged portions such as the engaging recesses 18 are provided on the base 2 side. While the positioning metal fitting 10 and the like are provided on the lower surface of the base 2, a plate or the like having a locked portion such as the locking recess 18 may be attached to the lower surface of the turntable 2. Of course, in this case, it is necessary to mount the plate by a structure such that the elongated hole 15 and the adjusting bolt 16 can be finely adjusted.

[0009]

As described above, according to the present invention, since the adjusting means is provided so as to be exposed to the outside, the adjustment work of the positioning mechanism is facilitated and the operability is improved. Further, if the outside is a side peripheral surface on the rotation operation side of the turntable, the adjusting means is exposed to the operator side, and the adjusting operation becomes easier.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a table circular saw machine.

FIG. 2 is an explanatory diagram of a positioning mechanism.

FIG. 3 is a view on arrow A.

FIG. 4 is an explanatory view of the positioning mechanism viewed from above the turntable.

FIG. 5 is an explanatory diagram showing a modified example of the positioning mechanism.

FIG. 6 is an explanatory diagram showing a modified example of the positioning mechanism.

[Explanation of symbols]

1 ... Desk top circular saw, 2 ... Base, 3 ... Turntable, 4 ... Main body, 5 ... Saw blade, 8 ... Fence, 9 ...
Adjustment lever, 10 ... Positioning metal fitting, 11 ... Contact piece,
12- ・ Mounting piece, 13- ・ Locking piece, 14- ・ Operating piece, 1
5 ・ ・ Long hole, 16 ・ ・ Bolt, 18 ・ ・ Locking recess.

Claims (2)

[Claims] 1. A turntable rotatably provided on a base, and a rotary blade movably provided on the turntable vertically. The turntable is provided on either one of the base and the turntable. A cutting machine provided with a positioning mechanism capable of locking to a locked portion, wherein the positioning mechanism or the locked portion exposes an adjusting means capable of adjusting a mounting position to the base or the turntable to the outside. A cutting machine characterized by being provided. 2. The cutting machine according to claim 1, wherein the outside is a side peripheral surface of the turntable on a rotation operation side.