JP2001150227A - Vertical band saw machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of rotation load to sliders under conditions including those where large external force acts on a saw blade housing and where a wheel rolls on cutting chips and the like adhering to an upper surface of a second guide rail. SOLUTION: For moving the saw blade housing 11 along the pair of guide rails 7, 9 in the horizontal direction, the sliders 37, 39 comprising a hinge shaft 45 are provided to a first guide rail 7 go as to be smoothly moved in the horizontal direction, and the saw blade housing 11 is connected to the sliders 37, 39 so as to be freely vertically swung about the axial center of the hinge shaft 45, and the wheel 49 rolling on the second guide rail 9 is rotatably provided to the saw blade housing 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical band sawing machine for cutting a work.

[0002]

2. Description of the Related Art A conventional vertical band saw machine will be briefly described as follows.

That is, a pair of guide rails extending in the horizontal direction are provided in parallel on the floor of the factory, and a vertical saw blade housing is provided so as to be movable in the horizontal direction along the pair of guide rails. . The saw blade housing is provided with an endless band saw blade extending in a vertical direction, and the band saw blade can be circulated. A work table for supporting the work is provided at an appropriate position, and the work table has a saw blade passage for the band saw blade to advance. Here, in order to move the saw blade housing in the horizontal direction along the pair of guide rails, a slider is provided on one of the guide rails so as to be slidable in the horizontal direction. A wheel for rolling the other guide rail is rotatably provided at an appropriate position on the other end side of the saw blade housing.

Accordingly, the work is supported on the work table so that the cut portion of the work is located above the saw blade passage. Then, under the condition that the band saw blade is circulated,
The saw blade housing is moved horizontally along a pair of guide rails. Thus, the band saw blade advances in the saw blade path, and can cut the workpiece to be cut. Here, since the wheels roll on the upper surface of the other guide rail, even when the parallel condition of the pair of guide rails is not high precision, the smooth sliding state of the slider can be maintained. The occurrence of galling between the rail and the slider can be suppressed.

[0005]

When a large external force (for example, a large cutting resistance) acts on the saw blade housing during cutting, or when a wheel passes over chips or the like adhered to the upper surface of one of the guide rails. In such a case, one end of the saw blade housing tends to move or move upward, and a rotational load is generated between one guide rail and the slider, so that one guide rail and the slider are damaged. Sometimes.

[0006] The same problem as described above also occurs in a vertical band sawing machine of a type in which the saw blade housing cannot move in the horizontal direction and the work table moves in the horizontal direction along a pair of guide rails.

[0007]

According to the present invention, a pair of guide rails extending in a horizontal direction are provided in parallel, and a vertical saw blade housing is horizontally moved along the pair of guide rails. The saw blade housing is provided with an endless band saw blade extending vertically and circulating and running, and a work table for supporting a work is provided.
In a vertical band sawing machine provided with a saw blade passage for allowing the band saw blade to advance on the work table, a hinge is attached to one of the guide rails to move the saw blade housing in a horizontal direction along a pair of guide rails. A slider having a shaft is provided so as to be slidable in the horizontal direction, and the saw blade housing is connected to the slider so as to be vertically swingable about the axis of the hinge shaft.
A wheel for rolling the other guide rail is rotatably provided on the saw blade housing.

According to the first aspect of the present invention,
So that the cut part of the work is located above the saw blade passage,
The work is supported on the work table. Then, while the band saw blade is circulated, the saw blade housing is moved in the horizontal direction along the pair of guide rails. Thus, the band saw blade advances in the saw blade passage, and can cut the workpiece to be cut.

Here, since the wheels roll on the upper surface of the other guide rail, even if the parallel state of the pair of guide rails is not high precision, the smooth sliding state of one guide rail and the slider is maintained. Therefore, it is possible to prevent galling between one of the guide rails and the slider. Further, when a large external force (for example, a large cutting resistance) is generated during cutting, or when a wheel passes over chips or the like adhered to the upper surface of one of the guide rails, the saw blade housing is connected to the axis of the hinge shaft. It swings slightly upwards about the heart.

According to the second aspect of the present invention, a vertical saw blade housing is provided, and the saw blade housing is provided with an endless band saw blade extending vertically and circulating and extending in a horizontal direction. A pair of guide rails are provided in parallel, and a work table for supporting the work is provided movably in the horizontal direction along the pair of guide rails, and a saw blade passage for the band saw blade to relatively advance on the work table. In the vertical band sawing machine provided with, in order to move the work table in a horizontal direction along a pair of guide rails, a slider provided with a hinge shaft on one of the guide rails is slidably provided in the horizontal direction. The work table is connected to a slider so as to be vertically swingable about the axis of the hinge shaft, and the other work table is connected to the work table. Characterized by comprising providing a wheel that rolls freely rotate Doreru.

[0011] According to the invention specifying matter of claim 2,
So that the cut part of the work is located above the saw blade passage,
The work is supported on the work table. Then, the work table is moved in a horizontal direction along the pair of guide rails while the band saw blade is circulated. Thus, the band saw blade relatively advances in the saw blade passage, and can cut the workpiece to be cut.

Here, since the wheels roll on the upper surface of the other guide rail, even if the parallel state of the pair of guide rails is not high precision, the smooth sliding state of the slider can be maintained. Galling between one of the guide rails and the slider can be suppressed. or,
When a large external force (for example, a large cutting resistance) is generated during cutting, or when a wheel passes over chips or the like adhered to the upper surface of the other guide rail, the work table is moved along the axis of the hinge shaft. It swings slightly upwards as the center.

[0013]

1 to 3, a vertical band saw machine 1 according to an embodiment of the present invention is a machine for cutting a workpiece W to be cut. This will be described in detail.

The floor 3 of the factory has a front-rear direction (FIGS. 1 and 2).
In FIG. 3, a support frame 5 extending in the front-to-back direction (downward and upward in FIG. 3) is provided. In the center of the support frame 5, a first guide rail 7 extending in the front-rear direction is provided. A second guide rail 9 extending in the front-rear direction is provided on the right side of the support frame 5 on the floor 3 (the right side in FIGS. 1 to 3) in parallel with the first guide rail 7. Here, the first guide rail 7 is a rail portion of a linear motion bearing, and the second guide rail 9 is an H-shaped steel, and the upper surface of the second guide rail 9 (the upper surface in FIGS. 3 is finished with high precision toward the paper surface).

A vertical saw blade housing 11 is provided along the first guide rail 7 and the second guide rail 9 so as to be movable in the front-rear direction. The saw blade housing 11 has a gap portion 13. A drive wheel 15 and a pair of driven wheels 17 and 19 are rotatably provided in the saw blade housing 11, and the drive wheel 15 is connected to a wheel motor 21 in an interlocked manner. The drive wheel 11 and the pair of driven wheels 17 and 19 are provided with endless band saw blades 23 extending in the vertical direction and capable of circulating and running, and a portion 23a of the band saw blade 23 having a cutting action is provided. Saw blade housing 11 for guiding and supporting
A pair of upper and lower saw blade guides 25 and 27 are provided on the left side of the.

A work table 29 for supporting the work W is provided on the support frame 5 so as to extend in the front-rear direction.
1 and 33 are provided. A pair of split tables 31, 35
A portion 23 having a cutting action in the band saw blade 23
A saw blade passage 35 for a to advance a is formed, and a part of the right side divided table 33 is located in the gap portion 13. The work table 29 is provided with appropriate fixing means (not shown) for fixing the work W.

In order to move the saw blade housing 11 in the front-rear direction along the first guide rail 7 and the second guide rail 9, the following configuration is adopted.

Referring to FIGS. 2 to 4, a pair of sliders 37, 39 are provided on the first guide rail 7 in the front-rear direction (in FIG. 2, front-to-back direction in FIG. 2; 4 is provided so as to be slidable rightward and leftward), and each slider 37 (39) is provided with a bearing member 41 (43).
Are provided respectively. The front end of a hinge shaft 45 is rotatably and irremovably supported on one bearing 41, and the hinge shaft 4 is mounted on the other bearing member 43.
5 is rotatably and irremovably supported.
The hinge shaft 45 is integrally connected to the left portion of the saw blade housing 11 (the left portion in FIGS. 2 and 3, the front portion in FIG. 4 facing the plane of the drawing) via appropriate connection means (for example, connection bolts). I have. Here, the hinge shaft 4
5 is inseparable from one bearing member 41, and the rear end of the hinge shaft 45 is
3 cannot be disengaged from the pair of sliders 3.
Reference numerals 7 and 39 integrally slide in the front-rear direction. 2 and 4 so as to be swingable in the vertical direction (vertical direction in FIGS. 2 and 4, and front and back in FIG. 3).

A wheel bracket 47 is provided on the left side of the saw blade housing 11, and wheels 49 for rolling on the upper surface of the second guide rail 9 are rotatably provided on the wheel bracket 47. The arm 51 is attached to the wheel bracket 47.
The arm 51 is provided with a roller 53 rotatably capable of contacting the lower surface of the flange of the second guide rail 9. Here, the roller 53 is the second guide rail 9
It is not always necessary to always contact the lower surface of the flange, and a member having a function as a stopper may be used. Further, the roller 53 may be configured to be vertically movable with respect to the wheel bracket 47 so that the roller 53 is always in contact with the lower surface of the flange of the second guide rail 9 by the urging force of a spring or the like.

A housing motor 55 is provided on the lower left side of the saw blade housing 11, and a pinion 57 is provided on an output shaft of the housing motor 55. A rack 59 extending in the front-rear direction is provided in the support frame 5 near the first guide rail 7, and the rack 59 and the pinion 57 are engaged with each other.

Next, the operation of the embodiment of the present invention will be described.

The work W is supported on the work table 29 so that the cut portion of the work W is located above the saw blade passage 35, and the work W is fixed to the work table 29 by an appropriate fixing means. Next, the wheel motor 21
, The drive wheel 15 and the pair of driven wheels 17 and 19 are rotated to cause the band saw blade 23 to circulate. By rotating the pinion 57 by driving the housing motor 55, the first guide rail 7 is rotated.
Then, the saw blade housing 11 is moved in the front-rear direction along the second guide rail 9. Accordingly, the portion 23a of the band saw blade 23 having the cutting action advances in the saw blade passage 35, and the cut portion of the workpiece W can be cut.

Here, since the wheels 49 roll on the upper surface of the second guide rail 9, even if the parallelism between the first guide rail 7 and the second guide rail 9 is not high precision, the slider 37 can smoothly move. Can maintain a smooth sliding state,
Galling between the guide rail 7 and the slider 37 can be suppressed. Also, when a large external force (for example, a large cutting resistance) is generated during cutting, or when the wheel 49 passes over chips or the like adhered to the upper surface of the second guide rail 9, the saw blade housing 11 is hinged. It swings slightly upward about the axis of the shaft 45.

As described above, according to the embodiment of the present invention, when a large external force is generated during cutting, or when the wheel 49 passes over chips or the like adhered to the upper surface of the second guide rail 9. In such a case, the saw blade housing 11 slightly swings upward about the axis of the hinge shaft 45, so that no rotational load is generated on the sliders 37, 39 and the sliders 37, 39 and the first guide rail. 7 and the sliders 37, 39 and the first guide rail 7
Life can be extended.

The present invention is not limited to the above-described embodiment of the present invention. The type in which the saw blade housing 11 cannot move in the front-rear direction and the work table 29 moves in the front-rear direction. As for the vertical band sawing machine, guide rails 7, 9, sliders 37, 39, hinge shaft,
By providing similar components such as the wheels 49, the same operation and effect can be obtained.

[0026]

According to the first aspect of the present invention, when a large external force (a large cutting resistance) acts on the saw blade housing during cutting, or on a chip or the like adhered to the upper surface of one of the guide rails. When the wheel rolls, the saw blade housing slightly swings upward about the axis of the hinge shaft, so that no rotational load is generated on the slider and damage to the first guide rail and the slider is prevented. Restrain,
The service life of the first guide rail and the slider can be extended.

According to the second aspect of the present invention, when a large external force (for example, a large cutting resistance) acts on the work table during cutting, or on a chip or the like adhered to the upper surface of the other guide rail, the wheel is moved. In the case where the work table rolls, the work table slightly swings upward about the axis of the hinge shaft, so that no rotational load is generated on the slider, and damage to the first guide rail and the slider is suppressed. Thus, the life of the first guide rail and the slider can be extended.

[Brief description of the drawings]

FIG. 1 is a front view of a rigid band sawing machine according to an embodiment of the present invention.

FIG. 2 is a diagram showing a main part of the embodiment of the present invention.

FIG. 3 is a view of FIG. 2 as viewed from above.

FIG. 4 is a diagram showing an arrow section IV in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical band sawing machine 7 1st guide rail 9 2nd guide rail 11 Saw blade housing 23 Band saw blade 35 Saw blade passage 37, 39 Slider 45 Hinge shaft 49 Wheel

Claims (2)

[Claims] 1. A pair of guide rails extending in a horizontal direction are provided in parallel, a vertical saw blade housing is provided movably in a horizontal direction along the pair of guide rails, and extends vertically in the saw blade housing. An endless band saw blade capable of circulating and running is provided, a work table for supporting a work is provided, and a saw blade path for the band saw blade to travel on the work table is provided. In order to move the saw blade housing in the horizontal direction along the rail, a slider having a hinge shaft is provided on one guide rail so as to be slidable in the horizontal direction, and the saw blade housing is attached to the slider by the hinge shaft. Connects to be able to swing up and down around the axis, and freely rotates the wheel that rolls the other guide rail on the saw blade housing. Vertical band saw machine, characterized by comprising providing. 2. A vertical saw blade housing is provided, an endless band saw blade extending vertically and circulating and running is provided on the saw blade housing, and a pair of guide rails extending horizontally are provided in parallel. In a vertical band sawing machine provided with a work table supporting a work along a pair of guide rails so as to be movable in a horizontal direction, and provided with a saw blade passage for relatively moving the band saw blade on the work table, In order to move the work table in the horizontal direction along the pair of guide rails, a slider having a hinge shaft is provided on one of the guide rails so as to be slidable in the horizontal direction, and the work table is attached to the slider by the hinge shaft. A wheel that rolls the other guide rail on the work table is connected to the work table so that it can swing up and down around the axis of Vertical band saw machine, characterized by comprising providing rolling freely.