JP3507208B2 - Mobius band saw blade and method of manufacturing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a Mobius band saw blade and its manufacturing how to cut a workpiece.

[0002]

2. Description of the Related Art Conventionally, as a Mobius band saw blade in which cutting teeth are symmetrically provided on both sides of the band cylinder in the same direction, and the front and back surfaces of the band cylinder are differently joined to each other in a circumferential shape, a real-life shoji 52- 37
It is well known in Japanese Patent Publication No. 48. The Mobius band saw blade known in the related art is wound around a drive wheel and a driven wheel provided on both left and right sides of a saw blade housing in a band saw machine so that the work wheel can be cut and cut so as to travel. It has become.

[0003]

By the way, the above-mentioned conventional Mobius band saw blade is wound around a driving wheel and a driven wheel to give a main component force (tension) to cut a work. A plurality of holes are formed at appropriate intervals in the longitudinal direction of the body portion of the band saw blade.

This hole is formed in order to improve the meshing of the body of the Mobius band saw blade with the drive wheel and the driven wheel, and it has not been studied how to apply a back force during cutting. However, there were difficulties in practical application.

An object of the present invention is to provide a Mobius band saw blade and its manufacturing how to allow practically cut a workpiece over an appropriate back component force during cutting.

[0006]

[Means for Solving the Problems] To achieve the above object
Mobius band saw blade of the present invention Nico, the cutting teeth symmetrically arranged in the same direction on both sides of the Obido, in the Mobius band saw blade formed by joining circumferentially shaped front and back with different phase of the band cylinder surface , The front and back surfaces of the band cylinder surface are formed with a back force component for applying a back force in the longitudinal direction of the band cylinder, respectively.
Connected to the flange protruding integrally with the body surface or the band body surface.
It is characterized in that it is a groove formed continuously .

[0007]

[0008] In the Mobius band saw blade, when cutting using the band saw machine, is cut by proper back component force is applied to the flange and groove is the back component force unit.

Further, in the method of manufacturing the Mobius band saw blade of the present invention, the first cutting teeth are provided on one side of the first band cylinder, the first back surface is provided on the other side, and the first band cylinder is provided with the first back surface on one side. A second cutting tooth is provided in the same direction as the cutting tooth, a second back surface is provided on the other side, and the first back surface and the second back surface are joined and integrated to form a body at the joined portion. It is characterized in that projecting flanges are formed on the front and back sides of the surfaces, respectively, and then the front and back surfaces of the body surfaces of the integrated first and second band cylinders are joined to each other with different phases. is there.

Therefore, a Mobius band saw blade having flanges formed on the front and back surfaces of the body is easily manufactured.

[0011]

[0012]

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, for example, a horizontal band saw machine 1 as a band saw machine is provided with an upright box-shaped bed 3, and a main body vice device for clamping a work W on the bed 3. 5 are provided. The main body vice device 5 is composed of a fixed main body vice jaw 5F and a movable main body vice jaw 5M. The movable main body vice jaw 5M can be moved in the left-right direction in FIG. 1 by a fluid cylinder (not shown). .

With the above structure, the work W to be machined is placed on the bed 3 and one end of the work W is brought into contact with the fixed main body vice jaw 5F for positioning. Then, by moving the movable main body vice jaw 5M from the left side to the right side in FIG. 1, the work W is clamped by the cooperation of the fixed main body vice jaw 5F and the movable main body vice jaw 5M.

Guide posts 7L and 7R are erected on both left and right sides of the bed 3, and the guide posts 7L and 7R are vertically movable by an actuator such as a drive motor or a fluid cylinder (not shown). A blade housing 9 is provided. An arcuate angle cutting adjustment hole 11 is formed on the left side of the bed 3, and the guide post 7L is rotated in the angle cutting adjustment hole 11 with the guide post 7R as a fulcrum. .

On the right side of the saw blade housing 9 is fixedly and rotatably supported a drive wheel 15 which is rotated by a rotation drive motor (not shown) via a bracket 13 and is driven by a bracket 17. The wheel 19 is rotatably supported. The bracket 17
A ball screw 21 extending in the left-right direction in FIG. 1 is screwed onto the upper part of the ball screw 21.
A handle 23 is attached to the left end of.
A Mobius band saw blade MBL whose details will be described later is wound around the drive wheel 15 and the driven wheel 19.

With the above structure, when the handle 23 is turned,
When the ball screw 21 is rotated and the bracket 17 is moved leftward in FIG. 1, the driven wheel 19 is moved.
Since it is also moved in the same direction, appropriate tension is applied to the Mobius band saw blade MBL. Further, the drive wheel 15 is rotated by a rotation drive motor (not shown), so that the Mobius band saw blade MBL is under constant tension.
In addition, the vehicle will rotate at a constant speed.

The saw blade housing 9 is provided with a fixed saw blade guide 25F and a movable saw blade guide 25M,
A movable saw blade guide 25M is provided so as to approach and separate from the fixed saw blade guide 25F by an actuator such as a drive motor (not shown). In addition, sometimes the fixed saw blade guide 25F is used as a movable saw blade guide, and the saw blade guide 25
The F and 25M may approach and leave the center of the center. Moreover, a back force component adjusting member 27 is provided at the tips (lower ends) of the fixed saw blade guide 25F and the movable saw blade guide 25M.

As shown in FIG. 2, the Mobius band saw blade MBL has one end D _{A of} a band cylinder D having a constant length.
On the other hand, the other end D _B is turned over (twisted by 180 degrees) and joined by, for example, welding to be integrated into an endless shape.
That is, the front and back of the surface of the band cylinder D are made into different phases and joined. Thus, a portion D _X where the front and back of the surface of the band cylinder D cross is generated. The cross portion D _X is twisted 90 degrees by the fixed saw blade guide 25F and the movable saw blade guide 25M on opposite sides to be vertical.

Band body D in the Mobius band saw blade MBL
As shown in FIG. 3, cutting teeth T are symmetrically formed on both sides of the same in the same direction. Moreover, the belt drum D
As shown in FIGS. 3 and 4, flanges 29, which are the back force component portions, are formed to project on both sides in the longitudinal direction of the. It is necessary that the height H of the flange 29 is smaller than the length L of the right and left set teeth of the cutting tooth T (L> H). Moreover, the upper surface of each flange 29 is shown in FIG.
As shown in Fig. 2, by pressing the back force adjusting member 27 from above, the Mobius band saw blade MBL is used for cutting.
A certain amount of back force can be applied to the blade, and good cutting can be performed without causing bending.

Moreover, since the Mobius band saw blade MBL has the cutting teeth T on both sides of the band cylinder D, it has a life more than twice as long as that of the band saw blade having the cutting teeth on one side and at the time of cutting. This prevents the work W from being narrowed. Further, since the time until the saw blade is replaced becomes long, the loss time for replacing the saw blade can be reduced by half. Furthermore, since the continuous operation time is, for example, 100 cm ² / min for 20 hours or more, unmanned operation at night becomes possible.

FIG. 5 shows another Mobius band saw blade MBL in place of FIG. Groove 31 which is an object to be back component force portion on each side of Obido D along the longitudinal direction in FIG. 5, the furan
It is formed continuously instead of the di 29 . By pressing the spine force adjusting member 27 against the surface of the groove 31 from above, a constant spine force can be applied to the Mobius band saw blade MBL at the time of cutting, and a good cutting process without causing bending can be performed. You can Other effects are the same as those shown in FIG.

FIG. 6 shows an example of manufacturing the Mobius band saw blade MBL. In FIG. 6, a first cutting tooth 35A is formed on one side of the band cylinder 33A, and an L-shaped notch 37A serving as a first rear surface is formed on the other side of the band cylinder 33A, and the opposite facing the notch 37A. A flange 39A is formed on the side. Similarly, a second cutting tooth 35B is formed on one side of the band cylinder 33B in the same direction as the first cutting tooth 35A, and a notch 37B serving as a second back surface is formed on the other side of the band cylinder 33B. A flange 39B is formed on the side opposite to the notch 37B. That is, the cutout portion 37A
And 37B are the same size and flanges 39A and 39B
Also have the same size.

Then, the notch 37A and the notch 3
7B and 7B are put together as shown in FIG. 6 and joined by welding or the like to be integrated. Then, the other end of the integrated band cylinders 33A and 35B is turned upside down (1
It is possible to easily manufacture the Mobius band saw blade MBL in which the front and back sides of the surface of the band cylinder D similar to those shown in FIG. it can.

Moreover, by pressing the back force adjusting member 27 from above on the upper surfaces of the flanges 39A and 39B, a constant back force can be applied at the time of cutting,
The same effect as that shown in FIG. 4 or 5 is obtained.

The present invention is not limited to the examples of the embodiment described above, but can be implemented in other modes by making appropriate changes. In the example of the present embodiment, a horizontal band saw machine has been described as an example, but a vertical band saw machine may be used. Further, the cutting teeth T formed on both sides of the Mobius band saw blade MBL have been described as having an equal pitch, but they may have an unequal pitch.

[0028]

As will be understood from the examples of the embodiment as described above, according to the present invention, when the Mobius band saw blade is used for the band saw machine, the flange which is the back force component is cut. Appropriate back force can be applied to the groove and groove to perform good cutting without bending.

Further, according to the present invention, it is possible to easily manufacture a Mobius band saw blade having flanges formed on the front and back sides of the band barrel surface.

[0030]

[Brief description of drawings]

FIG. 1 is a front view of a horizontal band saw machine using a Mobius band saw blade of the present invention.

FIG. 2 is a plan view of the Mobius band saw blade of the present invention.

3 is a cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a side view of FIG.

5 is a side view showing an example of another embodiment instead of FIG.

FIG. 6 is an explanatory diagram for manufacturing the Mobius band saw blade.

[Explanation of symbols]

1 Horizontal band saw machine (band saw machine) 9 saw blade housing 15 drive wheels 19 Driven wheel 25F, 25M fixed, movable saw blade guide 27 Back force adjustment member 29 Flange (back force component) 31 groove (back force component)

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B23D 61/12 B23D 55/08 B27B 13/10 B27B 33/06

Claims (3)

(57) [Claims] 1. A Mobius band saw blade in which cutting teeth are symmetrically provided on both sides of the band cylinder in the same direction, and the front and back surfaces of the band cylinder face are joined in a circumferential shape to form a Mobius band saw blade. to the longitudinal direction of the respective bands cylinders on the front and back surfaces, forms to be back component force unit for applying a back component force, wherein the back component force unit is integrated with the band cylinder surface
Mobius band saw blade characterized by a protruding flange . 2. Cut symmetrically on both sides of the band cylinder in the same direction.
Tooth cutting is provided, and the front and back of the surface of the band are differently bonded to each other in a circumferential shape.
Made into a Mobius band saw blade, and
Back force components that apply back force in the longitudinal direction of the band
And the back force component is continuously formed on the band body surface.
Mobius band saw blade characterized by being a groove made . 3. A first cutting tooth is provided on one side of the first band cylinder and a first back surface is provided on the other side, and a second cutting is made on one side of the second band cylinder in the same direction as the first cutting tooth. Providing teeth and providing a second back surface on the other side, the first back surface and the second back surface are joined and integrated, and projecting flanges are formed on the front and back surfaces of the body surface at the integrated joint. Then, a method for manufacturing a Mobius band saw blade, characterized in that the front and back surfaces of the body surfaces of the integrated first band cylinder and second band cylinder are made different in phase and joined in a circumferential shape.