JPH1034434A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut a workpiece easily into small pieces by providing a cutter movably in an X-axis direction or a Y-axis direction, and providing a workpiece placing base, provided with a workpiece rotating device, movably in the Y-axis direction or the X-axis direction. SOLUTION: A turntable 45 is rotated by torque of a turntable driving motor 55 through a speed reducer 57 and stopped by operating a brake of the speed reducer 57 in a position where one blade W of a large screw faces a Y-axis direction. A workpiece placing base 33 is advanced on a placing base guide rail 39 by the actuation of a placing base driving motor 41 and stopped in the advanced position of the tip of the blade W. In this state, a vertical band saw machine 1 advances at low speed on a guide rail 25 and advances while cutting the workpiece with a band saw blade 7 traveling from an upper frame 19 of the vertical band saw machine 1 toward a lower frame 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for easily and finely cutting a workpiece made of a large structure in order to disassemble the scrap.

[0002]

2. Description of the Related Art Especially for large workpieces, for example, large screws and other large structures used in large hulls and discarded,
Even if it is buried in the soil and discarded or reused, it must be cut into small pieces and scraps dismantled. For example, since the above-mentioned large screw uses expensive materials, it is an effective method to melt and reuse it in the melting furnace, but for that purpose, the large screw can be put into the melting furnace. Need to be cut finely.

Conventionally, there is no special and easy method for dismantling a large structure by scrapping. Therefore, a person has cut the large structure finely by a cutting method such as gas fusing.

[0004]

However, the conventional gas fusing method has a problem that it takes a lot of time and is dangerous because it generates heat.

[0005] Further, at the time of fusing, the melted cross section of the object to be processed which is blown to give high heat to the structure is in a heat-treated state. Therefore, in order to use the object to be processed as a material of another product, it is necessary to perform various heat treatments, for example, post-treatments such as annealing.

[0006] In order to melt the above-mentioned large screw and put it into a melting furnace for re-use, it usually takes 30 minutes.
Must be cut to within 0 mm cube dimensions and scrapped.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cutting device for easily and finely cutting a work, particularly a large screw or other large structure. It is an object of the present invention to provide a cutting device for easily and finely cutting a workpiece made of a scrap.

[0008]

According to a first aspect of the present invention, there is provided a cutting apparatus including a cutting machine provided with a cutting tool for cutting a work, and a work to be cut by the cutting machine. A work placement table provided with a work rotating device for setting a cutting position by rotating the placed work, the cutting machine in the X-axis direction or the Y-axis direction, and the work placement table in the Y-axis direction. Alternatively, it is provided so as to be movable in the X-axis direction.

Therefore, the work is placed on the work rotating device of the work placing table, and the work rotating device is rotated to set the cutting position of the work. The direction of rotation of the work by the work rotating device is fixed to the work mounting table. The cutting machine is provided movably in the X-axis direction, and the work mounting table is Y
If it is provided so that it can be moved in the axial direction, the work placement table moves the work in the direction approaching the work cutting position of the cutting machine, that is, in the Y-axis direction, sets the work cutting width, and moves the cutting machine in the X-axis direction. It moves and the work is easily cut to a desired cutting width.

On the other hand, when the cutting machine is provided so as to be movable in the Y-axis direction and the work mounting table is provided so as to be movable in the X-axis direction, the cutting machine moves in the Y-axis direction so that the work of the cutting machine can be performed. The cutting position moves in the direction approaching the work and is set to the work cutting width. Next, when the work table is
The workpiece is easily cut to a desired cutting width by moving in the axial direction.

According to a second aspect of the present invention, there is provided a cutting apparatus including a cutting machine having a cutting tool for cutting a work, and a work to be cut by the cutting machine, and rotating the placed work by rotating the work. A work mounting table provided with a work rotating device for setting a cutting position, and fixing the work mounting table or the cutting machine,
A cutting machine or a work mounting table is provided movably in the X-axis and Y-axis directions.

Therefore, the work is placed on the work rotating device of the work placing table, and the work rotating device is rotated to set a cutting position of the work. The direction of rotation of the work by the work rotating device is fixed to the work mounting table.

When the work mounting table is fixed and the cutting machine is provided so as to be movable in the X-axis and Y-axis directions, the cutting machine moves in the Y-axis direction so that the work cutting position of the cutting machine approaches the work. It moves and is set to the cutting width of the work. Next, the work is easily cut to a desired cutting width by moving the cutting machine in the X-axis direction.

On the other hand, the cutting machine is fixed, and
When the workpiece mounting table is moved in the Y-axis direction, the workpiece moves in the direction approaching the workpiece cutting position of the cutting machine, and the workpiece cutting width is set. Next, the workpiece is easily cut to a desired cutting width by moving the workpiece mounting table in the X-axis direction.

According to a third aspect of the present invention, in the cutting apparatus, the cutting machine is made to approach the work at a high speed in the cutting direction of the work, and when the work is cut, the cutting machine is advanced at a low speed.
After the cutting of the workpiece is completed, a control device for retreating the cutting machine at a high speed is provided.

Therefore, the control device causes the cutting machine to move forward at a high speed until the cutting tool is positioned immediately before the work, and when cutting the work, the cutting machine moves forward at a low speed. Since the workpiece is retracted at a high speed, the workpiece is easily and efficiently cut at an appropriate cutting speed.

According to a fourth aspect of the present invention, the cutting device is a vertical band sawing machine.

Therefore, the vertical band saw machine has a long area that can be cut by the band saw blade due to its structure. In the case of a horizontal band sawing machine, the direction of cutting the work is from the top to the bottom, but in the case of a vertical band sawing machine, the cutting direction of the work is horizontal, so the main body of the vertical band sawing machine must be run horizontally. As a result, the work is cut long in the horizontal direction. Further, as compared with a circular saw blade such as a circular saw machine, the width of the band saw blade is narrow, so that the band saw blade is less likely to be narrowed by the cutting groove of the work. From the above, the vertical band sawing machine is suitable for cutting a large work.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cutting apparatus according to the present invention will be described below with reference to the drawings, taking a general vertical band saw machine as an example and a large screw as a work.

Referring to FIGS. 1 and 2, for example, a vertical band sawing machine 1 as a cutting machine according to the present embodiment is based on a box-shaped base 3. A main body frame 5 having a C-shaped cross section is provided.

The body frame 5 has an endless band saw blade 7 (cutting tool), a rotatable driving wheel 9 for supporting the band saw blade 7 and a driven wheel 11, and a wheel for driving the driving wheel 9 to rotate. Drive motor 13 is provided.

More specifically, the main body frame 5 includes a lower frame 15 for accommodating the drive wheel 9 and the wheel drive motor 13, a support frame 17 erected on one side of the upper surface of the lower frame 15, and a support frame 17. An upper frame 19 is integrally fixed to the upper portion and houses the driven wheel 11. The upper frame 19 has a C-shaped cross section provided with a foot portion 21 opened rightward on the plane of FIG. A table 23 on which the work W is placed is provided on the upper surface of the lower frame 15.

One end of the band saw blade 7 travels from the upper frame 19 to the lower frame 15 from the top to the bottom through the opening side of the flap portion 21 from the upper side, and the other side of the band saw blade 7 moves downward in the support frame 17. It is provided to run upward from. The depth from the band saw blade 7 to the support frame 17 at the back of the foot portion 21 is about 1 in the example of the present embodiment.
m.

The cutting direction of the workpiece by the band saw blade 7 is the “X-axis direction” in the direction going downward on the paper of FIG. 2 (the direction going from the back to the front on the paper of FIG. 1), and includes the main body frame 5 described above. The pedestal 3 is provided so as to be movable on a guide rail 25 for a cutting machine provided on the floor surface by a driving motor 27 for the cutting machine (FIG. 2) so as to move back and forth in the cutting direction (X-axis direction) of the work. ing.

The main body frame 5 of the vertical band saw machine 1 is provided with a work detector 29 for detecting a work W ahead of the work in the cutting direction. As the work detector 29, for example, the upper frame 19 and the lower frame 15 of the vertical band saw 1 are vertically shielded from the position of the band saw blade 7 in the cutting direction of the work W between the upper frame 19 and the lower frame 15. A sensor such as a photoelectric switch or another proximity sensor can be provided.

The vertical band saw machine 1 is provided with a control device 31 as shown in FIG. 3, and the vertical band saw machine 1 faces the work until the work detector 29 detects the work. The speed of the cutting machine drive motor 27 is adjusted to a high speed by a transmission device such as a transmission (not shown) so that the workpiece is quickly approached, and the control device 31 is activated by a detection signal indicating that the work detector 29 has detected the work. In order to reduce the traveling speed of the vertical band sawing machine 1, the rotation of the cutting machine drive motor 27 is changed to a low-speed rotation by a transmission. Further, the vertical band saw machine 1 is controlled so as to retreat at a high speed to the original position after the completion of the work cutting.

Further, after the cutting of the work is completed, the work detector 29 detects that the work W has disappeared,
In other words, in response to the detection signal of the work detector 29 which has detected that the cutting of the work W has been completed, the control device 31 operates to stop the forward movement of the vertical band saw machine 1 after T seconds, and the vertical band saw machine 1 Is configured to be switched to retreat at high speed.

Referring again to FIGS. 1 and 2, the cutting device of the present invention is provided with a work mounting table 33 on which a work W to be cut by the vertical band saw machine 1 is mounted. The table 33 is provided with a work transfer device 35 (work positioning device) for positioning the cutting position of the work W by moving the work W toward and away from the cutting position of the work W on the vertical band sawing machine 1. ing.

In the example of this embodiment, the work table 33
Is provided so as to be able to move back and forth in a direction (Y-axis direction) perpendicular to the cutting direction of the work W by the vertical band sawing machine 1, but it is not always necessary to travel in the Y-axis direction. Cutting position C of work W in die band sawing machine 1
The workpiece may travel such that the workpiece approaches and separates slightly obliquely to a direction orthogonal to L (work cutting line), and is not particularly limited.

More specifically, the work mounting table 33 is
A mounting table main body 37, which is a box-shaped structural member mount, is provided on a mounting table guide rail 39 extending in the Y-axis direction so as to be movable back and forth by a mounting table drive motor 41.

A work rotating device 43 for rotating the work W is provided on the upper surface of the mounting table main body 37.
As the work rotating device 43, a turntable 45 is provided rotatably in the horizontal direction via a thrust bearing 47, and the turntable 45 is provided via a bearing on a center shaft protruding from the mounting table upper frame 49 of the mounting table main body 37. It is bearing.

An endless annular internal gear 51 is provided on the lower surface of the turntable 45. The internal gear 51 is engaged with a turntable pinion 53, and the turntable pinion 53 is mounted on the mounting table main body. It is fixed to an output shaft 59 of a speed reducer 57 driven by a turntable drive motor 55 fixed to 37.
The speed reducer 57 is, for example, a worm speed reducer with a clutch / brake, and a rotation transmission means 63 such as a timing belt or a coupling is attached to an input shaft 61 of the speed reducer 57.
The rotational force of the output shaft 65 of the drive motor 55 for the turntable is transmitted via the. That is, the rotation force of the turntable drive motor 55 is transmitted to the turntable 45 at low speed and high output.

The speed reducer 57 is provided with a rotation position detector 67 such as a turntable encoder for detecting the number of rotations of the output shaft 59. The rotation position detector 67 controls the rotation of the turntable 45. The rotational position is detected. The turntable encoder is shown in FIG.
Is electrically connected to the CPU 32 provided in the control device 31 as shown in FIG.

A stopper hole 69 is provided on the outer peripheral surface of the turntable 45 at appropriate intervals, and a stopper cylinder 73 having a stopper pin 71 inserted into and removed from the stopper hole 69 is mounted on the mounting table main body. 37.

In the cutting apparatus according to the present invention, a rack 75 parallel to the mounting table guide rail 39 is provided in order to detect the position of the work mounting table 33 in the work transfer direction (Y-axis direction). The pinion 79 extends in the Y-axis direction, and a pinion 79 that meshes with the rack 75 and includes a mounting table encoder 77 (a mounting table position detector) is provided below the mounting table main body 37. . The mounting table encoder 77 is electrically connected to the CPU 32 of the control device 31 as shown in FIG.

Next, the operation of the above embodiment will be described with reference to the drawings.

The large screw work W is mounted on the turntable 45 of the work mounting table 33.

The clutch of the speed reducer 57 is actuated to rotate the turntable 45 via the speed reducer 57 with the rotational force of the drive motor 55 for the turntable, and one blade of the large screw is rotated as shown in FIG. The brake of the speed reducer 57 is operated and stopped at the position facing the axial direction.

In this case, since the opening angle between the blades is constant at equal intervals depending on the number of blades of the large screw, by inputting a preset desired position to the control device 31, the rotational position detector Turntable 4 from 67
The control device 31 is operated by the detection signal of the position in the rotation direction 5 and the turntable 45 is stopped at a position where each blade faces the Y-axis direction.

Next, the stopper cylinder 73 is operated, the stopper pin 71 of the stopper cylinder 73 is inserted into the stopper hole 69 of the turntable 45, and the position of the turntable 45 in the rotation direction is fixed to the mounting table main body 37.

The work mounting table 33 is provided with a mounting table drive motor 4.
1 operates to move forward on the guide rail 39 for the mounting table, and in the example of the present embodiment, the tip of the blade to be cut is moved forward from the work cutting line CL in the vertical band saw machine 1 in the transfer direction of the work. Stop at a position advanced by 300 mm.

The vertical band saw machine 1 advances rapidly in the X-axis direction until it approaches the work W, and the control device 31 is activated by the detection signal of detecting the work W by the work detector 29, and the vertical band saw machine 1 is moved. Moving forward at low speed, upper frame 1 of vertical band sawing machine 1
The workpiece W is advanced while cutting the work W by the band saw blade 7 traveling from 9 to the lower frame 15.

After the cutting of the work W is completed, the cut piece of the work W is placed on the table 23 of the vertical band saw machine 1. Then, the control device 31 is activated by a detection signal indicating that the work detector 29 has detected the completion of the cutting of the work W. After T seconds, the vertical band saw machine 1 stops moving forward, retreats at high speed and returns to the original position. I do. At this time, the work mounting table 33 can be slightly retracted so that the broken surface at the tip of the work W escapes from the band saw blade 7.

The work mounting table 33 advances again by a detection signal of a detector (not shown) such as a limit switch for detecting that the vertical band saw machine 1 has returned to the original position, and the leading end of the work W as described above. Stops at a position advanced 300 mm forward from the work cutting line CL in the work transfer direction in the vertical band sawing machine 1, the vertical band sawing machine 1 advances and the work W is cut, and the work detector 29 detects the work W. The vertical band saw machine 1 retreats rapidly and returns to the original position in response to a detection signal that detects the end of cutting.

By repeating the above steps, one blade is cut at a width of 300 mm from the tip toward the base of the large screw. After one blade has been cut, the work table 3
3 moves back to the original position.

Next, the stopper cylinder 73 is operated, and the stopper pin 71 of the stopper cylinder 73 is pulled out of the stopper hole 69 of the turntable 45.

When the clutch of the speed reducer 57 is actuated, the turntable 45 is rotated via the speed reducer 57 by the rotational force of the drive motor 55 for the turntable.
5 stops at the position where one blade to be cut next faces the Y axis direction, the stopper pin 71 is inserted into the stopper hole 69, and the position of the turntable 45 in the rotation direction is fixed to the mounting table body 37. Is done.

Next, one blade to be cut is cut through the same steps as the above-mentioned cut one blade, and the other blades are also cut.

In the above-described cutting apparatus of the present embodiment, the vertical band saw machine 1 is provided so as to be movable in the front-rear direction in the X-axis direction, and the work table 33 has a turntable 45 for rotating the work W. Although the work positioning table 33 is provided as a work positioning device so as to be movable in the front-rear direction in the Y-axis direction, a vertical band saw machine 1 is used as a cutting device in another example. The work mounting table 33 may be provided movably in the X-axis direction.

Further, the vertical band sawing machine 1 may be provided so as to be movable in the X-axis direction and the Y-axis direction. in this case,
The work placement table 33 provided with the turntable 45 for rotating the work W can be fixed to the floor without moving.

The work table 33 having the turntable 45 may be provided so as to be movable in the X-axis direction and the Y-axis direction. In this case, the vertical band sawing machine 1 can be fixed to the floor without moving.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. In the example of the present embodiment, the vertical band saw machine 1 has been described as an example of a cutting machine, but other band saw machines, circular saw machines, and other cutting machines may be used.

[0053]

As will be understood from the above embodiment, according to the first aspect of the present invention, a work is mounted on a work rotating device of a work mounting table, and the work rotating device is rotated. To set the cutting position of the work. The direction of rotation of the work by the work rotating device is fixed to the work mounting table. In the case where the cutting machine is provided so as to be movable in the X-axis direction and the work mounting table is provided so as to be movable in the Y-axis direction, the direction in which the work mounting table approaches the work to the work cutting position of the cutting machine, that is, the Y-axis direction. , The cutting width of the work can be set, and the cutting machine can be moved in the X-axis direction to easily cut the work to a desired cutting width.

On the other hand, when the cutting machine is provided so as to be movable in the Y-axis direction and the work mounting table is provided so as to be movable in the X-axis direction, the cutting machine is moved in the Y-axis direction so that the work of the cutting machine can be performed. The cutting position can be set to the cutting width of the work by moving the cutting position toward the work. Next, when the work table is
By moving in the axial direction, the work can be easily cut to a desired cutting width.

According to the second aspect of the present invention, when the work mounting table is fixed and the cutting machine is provided so as to be movable in the X-axis and Y-axis directions, the cutting machine is moved in the Y-axis direction. The workpiece cutting position can be set in the direction of approaching the workpiece to the workpiece cutting width. Next, the workpiece is easily cut to a desired cutting width by moving the cutting machine in the X-axis direction.

On the other hand, the cutting machine is fixed and the work
In the case where the workpiece mounting table is movable in the Y-axis direction when the workpiece mounting table is movable in the Y-axis direction, the workpiece moves in a direction approaching the workpiece cutting position of the cutting machine, and the cutting width of the workpiece can be set. Next, the workpiece can be easily cut to a desired cutting width by moving the workpiece mounting table in the X-axis direction.

According to the third aspect of the present invention, the control device causes the cutting machine to move forward at a high speed until the cutting tool is positioned immediately before the work, and when cutting the work, the cutting machine moves forward at a low speed. After the end of the cutting, the cutting machine retreats at a high speed, so that the work can be easily and efficiently cut at an appropriate cutting speed. In particular, a work made of a large screw or another large structure can be easily and finely cut for scrap dismantling.

According to the fourth aspect of the invention, the vertical band saw can structurally lengthen the area that can be cut by the band saw blade. In the case of a horizontal band sawing machine, the direction of cutting the work is from the top to the bottom, but in the case of a vertical band sawing machine, the cutting direction of the work is horizontal, so the main body of the vertical band sawing machine must be run horizontally. Thereby, the work can be cut long in the horizontal direction. Further, as compared with a circular saw blade such as a circular saw machine, the band saw blade has a smaller blade width, and thus is less likely to be narrowed by a cutting groove of a work. From the above, the vertical band sawing machine is suitable for easily cutting a large work.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention and is an overall front view of a cutting apparatus.

FIG. 2 shows an example of an embodiment of the present invention, and is an overall plan view of a cutting device.

FIG. 3 is a control block diagram of an example of an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical band sawing machine (cutting machine) 5 Main frame 7 Band saw blade 9 Drive wheel 11 Follower wheel 21 Foot part 25 Guide rail for cutting machine 29 Work detector 31 Control device (CPU) 33 Work mounting table 35 Work transfer device (Work) Positioning device) 39 Guide rail for mounting table 41 Drive motor for mounting table 43 Work rotating device 45 Turntable 55 Drive motor for turntable 65 Output shaft (of drive motor 55 for turntable) 67 Rotational position detector (encoder) 77 Mounting Mounting table encoder (mounting table position detector)

Claims (4)

[Claims] 1. A cutting machine provided with a cutting tool for cutting a work, and a work rotating device for placing a work to be cut by the cutting machine, and rotating the placed work to set a cutting position. A cutting device, comprising: a work mounting table provided with the cutting machine in the X-axis direction or the Y-axis direction; and the work mounting table in the Y-axis direction or the X-axis direction. 2. A cutting machine provided with a cutting tool for cutting a work, and a work rotating device for mounting a work to be cut by the cutting machine, and rotating the placed work to set a cutting position. A cutting device comprising: a work mounting table provided; and the work mounting table or the cutting machine is fixed, and the cutting machine or the work mounting table is provided movably in the X-axis and Y-axis directions. 3. A control device for causing the cutting machine to approach the work at a high speed in a cutting direction of the work, moving the cutting machine at a low speed at the time of cutting the work, and retreating the cutting machine at a high speed after the end of the work cutting. The cutting device according to claim 1, wherein the cutting device is provided. 4. The cutting device according to claim 1, wherein the cutting machine is a vertical band sawing machine.