JP3507210B2 - Band sawing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a band saw machine for cutting a work using a Mobius band saw blade.

[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 freely to perform a cutting process. It has become.

[0003]

The conventional Mobius band saw blade described above 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 no consideration has been given to applying a back force during cutting. However, there were difficulties in practical application.

An object of the present invention is to provide a band saw machine capable of practically cutting a workpiece by applying an appropriate back force during cutting.

[0006]

In order to achieve the above object, the saw machine of the present invention has cutting teeth symmetrically provided on both sides of the band cylinder in the same direction so that the front and back surfaces of the band cylinder are different. Drive wheel and driven wheel provided on both sides of a saw blade housing, and Mobius strip saw blades formed by staggeredly forming a plurality of slits at appropriate intervals in the longitudinal direction on the surface of the band cylinder. preparative the provided freely running rotation together occupy turning winding, the saw blade disposed housing reciprocably relative to the to be processed workpiece, Ri Na provided back component force adjustment device for applying a back component force to the slit when machining , The staggered slit
Are arranged so that both ends overlap and the back force adjustment
The device includes a saw blade fixing roller provided on one side of the band cylinder and the band cylinder.
On the other side of the
And a back component force adjusting roller having a component force pressing portion,
It is characterized by being present.

In the above construction, the Mobius band saw blade is wound around the drive wheel and the driven wheel provided on both sides of the saw blade housing to rotate the traveling blade and cut the saw blade housing with respect to the workpiece to cut the workpiece. Processing is performed.

[0008] When performing the cutting on the workpiece, and allowed pressing the slit bets formed on the surface of the strip body of the Mobius band saw blade in the back component force adjusting device provided on the saw blade housing, the back component in Mobius band saw blade By applying force, good cutting with less bending is performed.

[0009]

Further, when performing the cutting on the workpiece, fixing the one surface of the strip body in Mobius band saw blade in the saw blade fixed rollers, the back component force provided in the back component force adjustment roller from the other side of Obido The pressing portion is inserted into the slit formed in the band cylinder, and the back pressing portion is pressed to apply an appropriate back force to the Mobius band saw blade. Also, the slit is the surface of the band
Since it is formed in a staggered pattern in the
Can be hung.

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

The present invention is also directed to the same direction on both sides of the band cylinder.
Cutting teeth are installed symmetrically toward each other, and the front and back of the
Are joined to each other in a circumferential shape and longitudinally aligned with the surface of the band cylinder.
Mobius strip saw with multiple circular holes formed at appropriate intervals
Install the blades on the drive wheels and slaves on each side of the saw blade housing.
It can be wound around a moving wheel and can be rotated freely.
The saw blade housing with respect to the workpiece to be processed.
A spine that can be set back and forth and applies a spine force to the round hole during machining
A component force adjusting device is provided, and the back component force adjusting device is
The ball inserted in the round hole and the ball inserted in the round hole are
And a pressure member that applies back force from both sides of the
And a pressurizing means for applying pressure to
It is a characteristic.

In the above construction, when the work is cut, the ball is inserted into the round hole formed in the surface of the band cylinder of the Mobius band saw blade, and the ball is pressed by the pressing member by the pressing means. By tightening, the proper back force is applied to the Mobius band saw blade.

The present invention is also directed to the above band saw machine,
The round holes are provided in a zigzag shape on the surface of the band cylinder.

In the above-mentioned structure, since the round holes are provided in the zigzag shape on the surface of the band cylinder, a more appropriate back portion can be applied.

The present invention also provides the above band saw machine,
A supply device for supplying the sphere to the front round hole and a sphere storage box connected to the supply device are provided.

In the above structure, the sphere is sent from the sphere storage box to the supply device, and the sphere is easily supplied from the supply device to the round hole.

The present invention also provides the above band saw machine,
The supply device includes a conical sphere distribution storage part communicating with the sphere storage box, and a rotatable radial sphere feeding part distributed from the sphere distribution storage part. It is a thing.

In the above construction, the spheres are sent from the sphere storage box to the sphere distribution storage section through the sphere replenishing port, and further easily supplied to the round holes through the sphere delivery section.

The present invention is also directed to the above band saw machine,
The ball storage box is provided with a rotatable endless ball moving unit for supplying balls.

In the above structure, the balls are supplied from the endless ball moving portion to the ball storage box.

The present invention also provides the above band saw machine,
The traveling rotation of the ball moving portion is connected and driven by the traveling rotation portion of the Mobius band saw blade.

In the above structure, the traveling moving part of the Mobius band saw blade is rotated, so that the ball moving part is rotated.

[0029]

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.

[0030] Referring to FIG. 1, the horizontal-type band saw 1 for example as a band saw machine is provided with a bed 3 of erected a box-shaped main body vice for clamping the workpiece W on the bed 3 A device 5 is 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 construction, 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 the 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, there is fixedly and rotatably supported a drive wheel 15 rotated by a rotary drive motor (not shown) via a bracket 13, and a follower wheel via a bracket 17. 1
9 is rotatably supported. A ball screw 21 extending in the left-right direction in FIG. 1 is screwed onto the upper portion of the bracket 17, and a handle 23 is attached to the left end of the ball screw 21 in FIG. 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,
The ball screw 21 is rotated and the bracket 17 is moved leftward in FIG.
Since it is also moved in the same direction, appropriate tension is applied to the Mobius band saw blade MBL. Further, the Mobius band saw blade MBL is rotated under a constant tension by rotating the drive wheel 15 by a rotation drive motor (not shown),
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 depart from the center of the center. Moreover, a back force component adjusting device 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. As a result, a part D _X where the front and back of the surface cross is generated on the band cylinder D. Above and below the band cylinder D, cutting teeth D _T in the same direction are provided. The cross portion D _X is twisted 90 degrees to the opposite sides by the fixed saw blade guide 25F and the movable saw blade guide 25M to be vertical.

As shown in FIG. 3A , both ends of the Mobius band saw blade MBL have a dimension Δ.
Slit D _S so that L overlaps There are formed in a zigzag shape. Alternatively, as shown in FIG. 3 (B), staggered round holes D _H are formed. 3 and 4, cutting teeth D _T are formed on the upper and lower sides of the band cylinder D in the same direction.

FIG. 4 shows an example of the back force adjusting device 27. In FIG. 4, a plurality of saw blade fixing rollers 29 are rotatably supported by a shaft 31 on one side (left side in FIG. 4) of the band cylinder D of the Mobius band saw blade MBL. On the other side (right side in FIG. 4) of the band cylinder D of the Mobius band saw blade MBL, a back component force adjusting roller 35 having a plurality of back component force pressing portions 33 is rotatably supported by a shaft 37. There is.

With the above structure, as shown in FIG. 4, the saw blade fixing roller 29 is brought into contact with one side of the band cylinder D of the Mobius band saw blade MBL, and the back force is applied to the other side of the band cylinder D. By bringing the adjusting roller 35 into contact, and further inserting the back force holding member 33 into the zigzag slit D _S , and contacting the lower ends thereof and hydraulically or electrically pushing down, the back force force is applied to the Mobius band saw blade MBL. Therefore, it is possible to perform excellent cutting processing with little bending.

The length of the back force pressing portion 33 is as shown in FIG.
The slit D _S shown in (A) has a protrusion corresponding to the length L ₃ . The back force is transmitted at that part, and the length L ₂
By making a concave portion for the length of and contacting the surface of the convex portion with the band cylinder D, a back force can be applied.

5 (A), 5 (B), (B) so that the beginning and end of the convex portion of the back force component pressing portion 33 of the back component force adjusting roller 35 are not separated from the slit D _S early. C)
As shown in, the pressing portion is widened at the beginning and the end. FIG. 5A shows a state in which the back portion force adjusting roller 35 is pressed in the central portion of the back portion pressing portion 33.
5B shows a state in which the pressing portion is widened by ΔL so as not to separate at the end, and FIG. 5C shows a state in which the concave portion is in contact with the surface of the band cylinder D.

6 and 7 show another embodiment of the back force adjusting device 27. 6 and 7, three saw blade fixing rollers 29 are connected by a bar 39, and a back force adjusting roller 35 having three back force holding portions 33 is connected by a bar 41. Of.

Both ends of the bars 39 and 41 are fixed to the support frame 43, respectively. The support frame 43 is provided with a tip end of a handle 45 provided on the support member 47.

With the above configuration, by rotating the handle 45, the support frame 43 is moved in the vertical direction in FIG. 7, so that the contact of each saw blade fixing roller 29 on the surface of the band cylinder D can be adjusted. Also, the bar 41
By adjusting the shafts 37 in the vertical direction in FIG. 7 and adjusting the shafts 37 in the vertical direction in FIG. 6, it is possible to adjust the contact of the back force component pressing portion 33 with the belt cylinder D.

Further, since each shaft 37 is provided in the elongated hole 49 formed in the bar 41, it can be adjusted in the left-right direction in FIG.

Therefore, a plurality of back force adjusting rollers 35 are provided.
As shown in FIG. 6, by using the synchronous belt 51 to rotate in synchronization, the slit D _S of the band cylinder D
You will be able to apply evenly to your back evenly. Further, since the support member 47 can be exchanged, it is possible to replace the support member 47 immediately, especially when the back force pressing portion 33 is worn.

FIG. 8 shows an example of another embodiment of the back force adjusting device 27. That is, as shown in FIG. 8, the balls 51 are inserted into the staggered round holes D _H formed in the surface of the band cylinder D of the Mobius band saw blade MBL. In this state, the pressing member 5 is pressed from both sides in FIG.
3A, 53B; 55A, 55B press the ball 51. The pressing members 53A, 53B; 55
A and 55B are connected to a piston rod 57 of a pressure cylinder.

With the above structure, when the pressure cylinder is operated with the ball 51 inserted in the round hole D _H formed in the band cylinder D, the piston rod 57 descends in FIG. 53A, 53B; 55A, 55
Since the sphere 51 is pressed by B, the back force is applied to the sphere center angle (without slip, the back force is applied to the center of the sphere 51) so that the sphere 51 rotates at the cutting speed of the Mobius saw blade MBL. Meanwhile, the rails on the lower surfaces of the pressing members 53A and 53B; 55A and 55B are slid to apply a uniform back force. Therefore, it is possible to perform a good cutting process with little bending.

The speed of the Mobius band saw blade MBL is, for example, about 120 m / min (about 2 m / sec).
As shown in FIG. 3 (B), the interval between the round holes DH 25.4 mm, when arranged height distance between the upper and lower round hole D _H to 10 mm, the upper only 1 00 pieces / sec spheres Flows. Therefore, a total of 200 spheres / sec 51 above and below will flow in one second.

9 and 10 show a ball feeding unit for feeding the ball 51 into the upper and lower round holes D _H formed in the band cylinder D. 9 and 10, the ball feeding unit 53 uses a saw blade synchronous speed belt 55, for example, about 300 rpm. p. The pulley 57 is rotated at the m-th position, and is rotated by the centrifugal force and gravity. That includes a rotary shaft 5 9 which is rotated by the pulley 57, the balls feed rotary unit 63 having a plurality of balls feeding portion 61 vertically radially, which is part of the feeder to the rotating shaft 59 It is installed. A ball distribution storage part 65 is provided on the upper part of each of the ball feed parts 61, and a ball storage box 68 (see FIG. 11 ) having a ball supply port 67 is integrated on the upper part of the ball distribution storage part 65. Is provided for the purpose.

With the above structure, the ball 51 is replenished from the ball replenishing port 67, and the rotary unit 63 is rotated, so that the ball is fed through the ball distribution reservoir 65 to one opening of each ball feeding portion 61. more, so that successive ball 51 is supplied to the round hole D _H of Obido D. The sphere 51 prevents a slight synchronization shift by making the opening of the sphere feed part 61 a little larger, but basically, the saw is made to have the same circumference as the pitch (25.4 mm) in the Mobius band saw blade MBL. It is designed to synchronize with the blade speed.

The replenishment from the ball replenishing port 67 is as shown in FIG.
It is replenished by the distribution force ball moving unit 69 as shown in FIGS. 12 and 13. That is, FIG. 11 and FIG.
In addition, in FIG. 13, a belt 75 is wound around the ball replenishing pulley 71 and the other ball replenishing pulley 73 inserted into the rotating shaft 59. On the rotating shaft 77 of the ball supply pulley 73, a back force force ball moving pulley 79 is mounted. A belt 83 is wound around this back force force ball movement pulley 79 and another back force force movement pulley 81.

A back component force moving guide 85 is integrally attached to the outer periphery of the belt 83, and one end (left end in FIG. 11) of the back component force moving guide 85 pushes back component force balls. A protrusion 87 is provided so that the sphere 51 is pushed out from the sphere pushing-out protrusion 87 for back force component to the sphere supply port 67. The ball pushing protrusion 8 for the back force component
In FIG. 13, which is on the opposite side of FIG. 13, the back force ball moving guide 85 at the left end is provided with a supply cylinder 91 having a ball supply port 89.

With the above structure, the ball supply port 89 to the ball 51
Is supplied from the ball replenishing cylinder 91 to the back force ball moving guide 8
Sent to 5. The back force force ball movement guide 85 is provided on the rotary shaft 5.
The rotation of the belt 8 causes the belt 8 to pass through the belt 75, the ball supply pulley 73, the rotating shaft 77, and the back force moving pulley 79.
When 3 is rotated, it is rotated. Then, the sphere 51 is pushed out from the sphere pushing protrusion 87 for the back force provided on the sphere moving guide 85 for the back force, and is stored in the sphere distribution storage portion 65 from the sphere supply port 67.

As described above, since the circular holes D _H are provided in the zigzag shape on the surface of the band cylinder D, a more appropriate back force can be applied. Further, since the ball feed unit 61 via the spherical distribution reservoir 65 as the supply passage in the ball reservoir box 68 is communicated, it can be easily supplied to the round hole D _H of Obido D.

Further, since the ball storage box 68 is provided with an endless back force force ball moving portion 85, the ball 51
Can be automatically replenished. Back force ball moving unit 85
Is linked with the running rotation of the Mobius band saw blade MBL, so that the running force can be easily rotated by following the back force component ball moving unit 85.

The present invention is not limited to the above-described embodiments, but can be made by making appropriate changes.
It can be implemented in other modes.

[0058]

As can be understood from the above- described embodiments, according to the present invention, the Mobius band saw blade is wound around the drive wheel and the driven wheel provided on both sides of the saw blade housing for traveling rotation. The work is cut by cutting the saw blade housing against the work while pressing the work.

Therefore, when the workpiece is cut, the slit force or the circular hole formed on the surface of the band body of the Mobius band saw blade is pressed by the back force adjusting device provided in the saw blade housing, and the Mobius band saw is cut. By applying back force to the blade, good cutting with less bending can be performed.

Further, according to the present invention, when the work is cut, one side of the band cylinder of the Mobius band saw blade is fixed by the saw blade fixing roller, and the other side of the band cylinder becomes the back force adjusting roller. The back force holding portion provided is inserted into the slit formed in the band body, and this back holding portion is pressed,
Appropriate back force can be applied to the Mobius band saw blade.

Further, according to the present invention, since the slits are formed in a zigzag shape on the surface of the band cylinder, a more appropriate back force can be applied.

[0062]

[0063]

Further, according to the present invention, when the work is cut, the ball is inserted into the round hole formed in the surface of the band cylinder of the Mobius band saw blade, and the ball is pressed by the pressing means. By pressing with, the appropriate back force can be applied to the Mobius band saw blade.

Further, according to the present invention, since the round holes are provided in a zigzag shape on the surface of the band member, a more appropriate back portion can be applied.

Further, according to the present invention, the sphere can be sent from the sphere storage box to the supply device, and the sphere can be easily supplied from the supply device to the round hole.

Further, according to the present invention, the balls can be sent from the ball storage box to the ball distribution storage section via the ball supply port, and can be easily supplied to the round holes via the ball sending section.

Further, according to the present invention, it is possible to replenish the sphere from the endless sphere moving portion to the sphere storage box.

Further, according to the present invention, the traveling rotating portion of the Mobius band saw blade is rotated, so that the traveling movement of the ball moving portion can be followed and rotated.

[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.

3A and 3B are front views of the Mobius band saw blade of the present invention.

FIG. 4 is a side view showing an example of an embodiment of a back force component adjusting device.

5 is an operation explanatory view of the back force adjusting roller in FIG. 4. FIG.

FIG. 6 is a front view showing an example of another embodiment of the band component force adjusting device.

FIG. 7 is a plan view of FIG.

FIG. 8 is a side view showing an example of another embodiment for adjusting the back force component.

FIG. 9 is a plan view of a supply device that inserts a sphere having a round hole provided in a band cylinder of a Mobius band saw blade.

FIG. 10 is a side view of FIG.

FIG. 11 is a perspective view of a replenishing device that replenishes the supply device with balls.

FIG. 12 is a plan view of FIG.

13 is a front view of FIG.

[Explanation of symbols]

1 Horizontal type band saw machine (saw blade machine) 9 Saw blade housing 15 Drive wheel 19 Driven wheels 25F, 25M fixed, movable saw blade guide 27 Back force adjusting device 29 Saw blade fixed roller 33 Back force holding portion 35 Back force adjustment Roller 51 Ball 53 Ball feeding unit 61 Ball feeding part (supply device) 65 Ball distribution storage part 67 Ball replenishing port 68 Ball storage box 69 Back force ball moving part MBL Mobius band saw blade D Band body D _T Cutting tooth D _S Slit D _H round hole

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

Claims (7)

(57) [Claims] 1. A cutting tooth is symmetrically provided on both sides of the band cylinder in the same direction so that the front and back surfaces of the band cylinder are differently bonded to each other in a circumferential shape and the surface of the band cylinder is appropriately longitudinally aligned. A Mobius strip saw blade formed by forming a plurality of slits in a zigzag pattern at various intervals is wound around a drive wheel and a driven wheel provided on both sides of the saw blade housing and is provided so as to be freely rotatable and run.
Provided reciprocably relative to the workpiece to be machined said saw blade housing, Ri Na provided back component force adjusting device for applying the back component force in the slits at the time of processing, the staggered slit both
The back force adjusting device is arranged so that the ends thereof overlap.
However, the saw blade fixing roller provided on one side of the band
A back saw force adjusting roller having a back force holding portion having a length substantially equal to the length of the slit provided on one side, and a back saw force adjusting roller. 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 cylinder have different phases and are connected in a circular shape.
And at the same time on the surface of the band cylinder at appropriate intervals.
A Mobius strip saw blade with a number of circular holes
The drive wheel and driven wheel on both sides of the ring.
The saw blade housing is set so that it can be rotated and run freely.
The workpiece is to be machined, and can be reciprocally moved.
Equipped with a back force adjustment device that applies back force to the round hole at the time of construction
The back force adjusting device inserts a ball into the round hole.
And the ball inserted into the round hole from the both sides of the band,
A pressure member that applies a pressure and a pressure that applies pressure to this pressure member
Band saw, characterized in that it is a means, in configuration. 3. The band saw machine according to claim 2, wherein the round holes are provided in a zigzag shape on the surface of the band cylinder. 4. The band saw machine according to claim 2 , further comprising a supply device for supplying the ball to the round hole and a ball storage box connected to the supply device. 5. The supply device comprises a conical sphere distribution storage part communicating with the sphere storage box, and a rotatable radial sphere feeding part distributed by the sphere distribution storage part. The band saw machine according to claim 4, wherein: 6. The band saw machine according to claim 4, further comprising a rotatable endless sphere moving portion for supplying spheres to the sphere storage box. 7. The band saw machine according to claim 6, wherein the traveling rotation of the ball moving unit is connected and driven by the traveling rotation unit of the Mobius band saw blade.