JPH07102522B2 - Obi saw board - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a band saw used when cutting side edges of a wood workpiece into a curved shape.

[0002]

2. Description of the Related Art When cutting a side edge of a work piece of wood using a band saw, conventionally, the band saw is fixed at a fixed position and the band saw is circulated and rotated at the fixed position. The work was moved and the work was cut into a curved surface.

[0003]

When the band saw is fixed in place and the side edges of the work are cut, the work needs to be moved in the longitudinal direction, so that the size and weight are particularly large. When cutting the side edge of the work, there is a problem that the mechanism for clamping and moving the work becomes large and the moving work becomes complicated, and the processing accuracy for cutting the work decreases. An object of the present invention is to solve the above problems and to simplify the work of cutting a work with a band saw to improve the working accuracy.

[0004]

According to the band saw of the present invention, the main body of the band saw having the band saw is placed horizontally on a fixed table having a clamp mechanism for immovably clamping a work. The transfer surface to be moved is formed horizontally, and the lower surface of the float plate and the transfer surface are provided at the four corners of the float plate installed at the lower end of the main body of the band saw and superposed on the transfer surface. Air adjustment valves for individually adjusting the amount of air supplied through each of the injection holes by injecting air between the injection holes to float the body of the band saw. Are connected to each other.

[0005]

In the band saw having the above-mentioned structure, the amount of supply air sprayed between the transfer surface of the fixed table and the four corners of the float plate of the body of the band saw through the respective injection holes is adjusted. The float plate is levitated in a horizontal position by adjusting each valve individually, and the levitating saw body in the levitated state is horizontally transferred along the transfer surface according to the specified cutting shape to move the side edge of the work to A curved surface is cut by this work cutting part.

[0006]

Since the present invention is configured as described above, it is possible to perform curved surface cutting of the side edge of a work without moving the work while the work is fixed, and a mechanism for moving the work is provided. In addition to being unnecessary, it is possible to simplify the cutting work for cutting the side edge of the work, particularly the cutting work for cutting a large work. Also, by lifting the main body of the band saw, there is no frictional resistance during horizontal transfer of the main body of the band saw, so the main body of the band saw can be smoothly bent and moved in each direction with a slight force. The saw can be accurately moved in a curved manner, the workability in cutting the work can be improved, and the working accuracy of the work can be improved. In particular, air is injected through four injection holes penetrating each of the four corners of the float plate, and the flow rate of the air injected through each injection hole is adjusted individually by each air adjusting valve to adjust the four corners of the float plate. Since the buoyancy to lift the part can be adjusted, even if there is a partial weight difference in the main body of the band saw, the float plate can always be floated in a horizontal state and the main body of the band saw tilts. Therefore, it is possible to eliminate the problem that the cutting accuracy is lowered due to the floating.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. The fixed base 1 of the band saw board B is formed in a laterally long shape and fixed at a fixed position, and the fixed base 1 is formed with an upper step portion 1a and a lower step portion 1b laterally adjacent to each other in a step shape. .

A work W is attached to the upper end of the upper stage 1a of the fixed base 1.
A work fixing surface 2 on which a part is placed and fixed is formed horizontally.

On the work fixing surface 2, an upright portion 3a is provided upright on the outer end of the work fixing surface 2, and an arm connected to the upper end of the upright portion 3a and extending horizontally toward the lower step portion 1a. A pair of clamp arms 3 each having a portion 3b are fixed in parallel.

A clamp screw 4a screwed into a screw member at the tip of the arm portion 3b is attached to both clamp arms 3, and a work W is rotatably connected to the lower end of the clamp screw 4a.
A clamp member 4 having a pressing portion 4b for clamping and clamping a part of it with the work fixing surface 2 and a clamp handle 4c fixed to the upper end of the clamp screw 4a for rotating the clamp screw 4a. Each is combined.

A horizontally long transfer surface 5 is horizontally formed on the upper surface of the lower step portion 1b of the fixed base 1, and projecting edges 6 are formed on the outer edge and both side edges of the transfer surface 5. .

On the transfer surface 5 of the fixed table 1, the main body 7 of the saw blade is provided.
Is placed, a lower surface 8a is horizontally formed at the lower end of the band saw body 7, and a float plate 8 superposed in close contact with the transfer surface 5 is horizontally installed. A frame 9 fixed to the float plate 8 is installed on the top.

The length and area of the transfer surface 5 of the fixed base 1 are such that the main body 7 of the saw blade can be moved horizontally and the side edge of the work W can be machined into a curved shape over its entire length. It is set.

An upper saw wheel 11 is rotatably supported at the upper end of the frame 9, and a lower saw wheel 1 is provided at the lower end of the frame 9.
2 is rotatably supported.

An upper saw wheel tilting handle 19, an upper saw wheel raising and lowering handle 13, and a grip 14 for moving operation are installed near the upper end of the frame 9.

A motor 15 for rotating and driving a lower saw wheel 11 is attached to a lower portion of the frame 9, and an endless band saw 16 is rotatably rotatable on the upper saw wheel 11 and the lower saw wheel 12. It is suspended.

The band saw 16 is provided with a work cutting portion 16a for cutting the work W, which is arranged between the upper sled 17A and the upper steady rest mechanism 18A and the lower sled 17B and the lower steady rest mechanism 18B. Is formed in.

Air is sprayed between the transfer surface 5 and the lower surface of the float plate 8 at the four corners of the float plate 8 of the band saw board body 7 to transfer the float plate 8 together with the band saw board body 7. The injection holes 20 that are levitated from 5 are provided so as to penetrate therethrough.

An air adjusting valve (speed controller) 21 for individually adjusting the amount of supply air injected through each of the injection holes 20 is connected to each of the injection holes 20, and each of the air adjusting valves 21 is in the upper stage portion of the base 1. The compressed air supply sources (not shown) installed in the la 1 are connected by air pipes 23, respectively.

When the air is injected through the respective injection holes 20 and the air is introduced between the transfer surface 5 and the lower surface 8a of the float plate 8, the four corners of the float plate 8 are pushed up by the air and the transfer surface 5 is pushed. Apart from this, the main body 7 of the band saw floats together with the float plate 8 to transfer the transfer surface 5 and the lower surface 8a of the float plate 8.
A gap 24 is formed between and.

When cutting the side edge of the work W into a curved surface, the levitating saw body 7 is guided so that the work cutting portion 16a of the saw 16 moves horizontally in accordance with the prescribed cutting work shape. In the copying mechanism that regulates the transfer path of the band saw board body 7, this is mounted on the mounting portion 26 fixed to the upper end of the frame 9 of the band saw board body 7 while protruding toward the clamp arm 3 side. A copying sesame 25 rotatably supported by the mounting portion 26 is installed.

An adjusting screw 28 having a handle 28a fixed to its rear end is rotatably installed on a pair of guides 27 installed on the upper stage 1a of the base 1 adjacent to both clamp arms 3, respectively. Both guides 27
Slide members 29 that are coupled to the adjusting screw 28 and horizontally move to the copy sesame 25 side and the opposite side by the rotating operation of the adjusting screw 28 are installed on the upper side.

Both slide members 29 have a profile 30a for guiding the copy sesame 25 so that the main body 7 of the band saw moves horizontally in accordance with a prescribed cutting shape. The scanning plates 30 are joined in a horizontal state.

When the copying saw 25 is always brought into contact with the professional film 30a of the copying plate 30, the floating saw body 7 is transferred by the grip 14 and horizontally transferred following the copying plate 30. The side edge of the copy plate 30 by the work cutting portion 16a of the band saw 16.
The pro-film 30a is cut into a curved surface having a curved shape.

However, a scribe line may be marked on the work W and the main body 7 of the band saw may be transferred so that the work cutting portion 16a of the band saw 16 moves along the scribe line.

Next, the operation and effect of the embodiment having the above construction will be described. In the present example, a band saw board main body 7 having a band saw 16 is placed on a fixed table 1 having a clamp mechanism for immovably clamping a work W, and a transfer surface 5 that is horizontally moved is made horizontal. The lower surface 8a of the float plate 8 and the transfer surface 5 are formed at the four corners of the float plate 8 that is formed and installed at the lower end of the band saw board body 7 and is superposed on the transfer surface 5.
And the injection holes 20 for injecting air to levitate the main body 7 of the band saw, respectively, are provided, and the amount of supply air injected through the injection holes 20 is individually adjusted in each of the injection holes K20. The respective air adjusting valves 21 are connected to each other.

For this reason, it is possible to perform curved surface cutting of the side edge of the work W without moving the work W while the work W is fixed, a mechanism for moving the work is not required, and the side edge of the work is eliminated. It is possible to simplify the cutting work for cutting the workpiece, especially the cutting work for cutting a large workpiece.

Further, since the frictional force at the time of horizontally transferring the band saw board body 7 is eliminated by levitating the band saw board body 7, the band saw board body 7 can be smoothly moved in each direction by a slight force. The band saw 16 can be accurately bent and moved by being bent and moved, and the workability when cutting the work W can be improved, and the working accuracy of the work W can be improved.

In particular, air is jetted through the four jet holes 20 penetrating the four corners of the float plate 8, and the flow rate of the air jetted through each jet hole 20 is individually adjusted by each air adjusting valve 21. Then float plate 4 of 4
Since the buoyancy for floating the corners can be adjusted, even if there is a partial weight difference in the band saw board main body 7, the float plate 8 can always be floated in a horizontal state and can be floated. It is possible to eliminate a problem that the main body 7 is tilted and floated and the cutting accuracy is lowered.

[Brief description of drawings]

FIG. 1 is a side view of a band saw board according to an embodiment of the present invention.

FIG. 2 is likewise a plan view.

FIG. 3 is likewise a plan view of a main part.

FIG. 4 is an enlarged cross-sectional view taken along line XX of FIG.

[Explanation of symbols]

 1 Fixed Base 4 Clamping Member 5 Transfer Surface 7 Band Saw Body 8 Float Plate 20 Injection Hole 21 Air Adjustment Valve W Work

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display B27B 13/02

Claims (1)

[Claims] 1. A transfer surface, on which a main body of a band saw board having a band saw is placed and horizontally moved, is formed horizontally on a fixed table provided with a clamp mechanism for clamping a work immovably.
Air is jetted between the lower surface of the float plate and the transfer surface at the four corners of the float plate installed at the lower end of the main body of the band saw and superposed on the transfer surface. A band saw characterized by being provided with respective injection holes for floating the board main body, and each of these injection holes is connected with an air adjusting valve for individually adjusting the amount of supply air injected through each of the injection holes. Board.