JP4176552B2 - Band saw machine and band saw wheel placement method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a band saw machine for cutting a workpiece by a band saw blade wound around a drive wheel and a driven wheel, and a band saw wheel arrangement method.
[0002]
[Prior art]
Conventionally, a band saw machine is driven by winding a belt-like endless saw blade 50 around a drive wheel 51 (FIG. 10) and a driven wheel 52, and the saw blade 50 is twisted at the lower ends of the guide arms 53 and 54. Then, the workpiece W is cut vertically so that it is hard to be perpendicular to the workpiece W, thereby cutting the workpiece W efficiently.
[0003]
In this case, the drive wheel 51 and the follower wheel 52 have the same diameter, which is determined by the following factors, as is well known.
[0004]
(1) The maximum capacity a of the work W.
(2) Twist raising distance b of the saw blade 51.
(3) Full width c of the machine.
[0005]
[Problems to be solved by the invention]
However, in the conventional band saw machine, as described above, the diameters of the driving wheel 51 and the driven wheel 52 are the same, so that any one of the above-mentioned elements (1) to (3) is satisfied. Then you have to sacrifice other factors.
[0006]
For example, in order to increase the twisting distance b of the saw blade 4, the driven wheel 52 must be installed on the left side of the illustrated position or the movable guide arm 53 must be moved to the right side.
[0007]
As a result, the overall width c of the machine increases or the maximum capacity a of the workpiece W decreases.
[0008]
Japanese Utility Model Publication No. 5-36573 discloses a band saw machine in which a cutting wheel 13 houses a large-diameter driving wheel 155 (FIG. 1 of the publication) and a plurality of small-diameter driven wheels 167 and 169.
[0009]
However, this band saw machine is intended to sufficiently transmit the power from the drive motor 161 (FIG. 2 of the publication) to the saw blade 11 and to reduce the size of the apparatus, and to solve the above-described problems. I can't.
[0010]
It is an object of the present invention to avoid sacrificing other elements in a band saw machine when satisfying any one of the maximum workpiece capacity, the saw blade twisting distance, and the overall machine width. is there.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides:
A drive wheel 6 and a driven wheel 7 around which a belt-like endless saw blade 4 is wound are provided opposite to both sides of the cutting head 1. The driven wheel 7 is composed of a plurality of small-diameter wheels 7A and 7B. each composed by one large diameter wheel 6, the small diameter wheel 7A, and 7B diameter, the band saw which was less than 1/2 of the diameter of the large diameter wheel 6, first forming the small-diameter wheels 7 a, 7 B 1 a driven wheel 7 a in the arrangement region of the second driven wheel 7 B, upper left region R1 divided into four vertically and horizontally, the upper right region R2, the lower left region R3, a predetermined region consisting of the lower right area R 4 is set, the 1 follower wheel 7 a is in the upper left region R1 or the upper right region R2, the second driven wheel 7 B is band saw machine, characterized in that in the lower left region R3 or lower right area R 4 are each positionable, and the band saw Use the board A that wheel placement method,
(1) When the twisting distance B of the saw blade 4 is increased while maintaining the maximum capacity A of the workpiece W and the full width C of the machine, a plurality of small diameters are required for a single large diameter wheel 6. Tilt the wheels 7A and 7B
(2) When the maximum capacity A of the workpiece W is increased in a state where the full width C of the machine and the twisting distance B ″ of the saw blade 4 are maintained, a plurality of single large diameter wheels 6 are Separate the small wheel 7A, 7B as a whole,
(3) When reducing the overall width C of the machine W while maintaining the twisting distance B ″ of the saw blade 4 and the maximum capacity A of the workpiece W, a plurality of small diameters are required for a single large diameter wheel 6. A technical means called a band saw wheel arrangement method characterized by bringing the wheels 7A and 7B close together is provided.
[0012]
According to the configuration of the present invention, for example, when the twisting distance B of the saw blade 4 is increased while maintaining the maximum capacity A of the workpiece W and the full width C of the machine (FIG. 9A). By arranging the first driven wheel 7A in the upper right region R2 and the second driven wheel 7B in the lower left region R3, the entire plurality of small diameter wheels 7A and 7B are inclined with respect to the single large diameter wheel 6. Therefore, when satisfying the elements such as increasing the twisting distance B of the saw blade 4, the elements such as the maximum capacity A of the workpiece W and the total width C of the machine are not sacrificed. When the maximum capacity A of the workpiece W is increased while maintaining the full width C and the twist raising distance B ″ of the saw blade 4 (FIG. 9B), the twist raising distance B ″ of the saw blade 4 and the workpiece Maximum of W While maintaining the Yapashiti A, it is the same when reducing the machine overall width C (FIG. 9 (C)).
[0013]
Therefore, according to the present invention, in the band saw machine, any one of the maximum workpiece capacity, the saw blade twisting distance, and the full width of the machine is satisfied without sacrificing the other elements. It becomes possible.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the accompanying drawings by embodiments.
FIG. 1 is an overall front view showing an embodiment of the present invention.
[0015]
The band saw shown in FIG. 1 is, for example, a hinge-type horizontal band saw, and has a cutting head 1 mounted on a base 14 via a hinge pin 13.
[0016]
The cutting head 1 is swung up and down by a cylinder 12, and a driving wheel 6 and a driven wheel 7 are provided on both sides of the cutting head 1 so as to face each other. The driving wheel 6 and the driven wheel 7 have a belt-like shape. The endless saw blade 4 is wound.
[0017]
A processing table 16 on which the workpiece W is placed is provided on the base 14 and in a portion of the cutting region L. On the processing table 16, a main body vice 15 including a fixed vise jaw 15A and a movable vise jaw 15B. Is provided.
[0018]
With this configuration, when the workpiece W sent by a feed vise (not shown) is positioned at the machining position, the workpiece W is fixed by the main body vice 15, and when the cylinder 12 is operated in this state, the cutting head 1 is lowered and the saw blade 4 cuts the workpiece W.
[0019]
One of the drive wheel 6 and the follower wheel 7, for example, the follower wheel 7 is composed of a plurality of (two in the example of FIG. 1) small diameter wheels 7A and 7B, and the other drive wheel 6 is a single large diameter. Each of the wheels 6 is constituted by a wheel 6, and the diameters of the small diameter wheels 7 </ b> A and 7 </ b> B are ½ or less of the diameter of the large diameter wheel 6.
[0020]
Further, a predetermined area R shown in FIG. 2 is set in the arrangement area of the first driven wheel 7A and the second driven wheel 7B constituting the small diameter wheels 7A and 7B, and the area R is divided into four parts vertically and horizontally. For example, the upper left region R1, the upper right region R2, the lower left region R3, and the lower right region R4 are configured.
[0021]
With this configuration, as described below, if the first driven wheel 7A and the second driven wheel 7B are disposed in any one of the regions R1 to R4, the saw blade twisting distance, the maximum capacity of the workpiece, Any one of the full machine widths can be satisfied without sacrificing the other.
[0022]
(1) A case where the twisting distance B of the saw blade 4 is increased (FIG. 9A).
[0023]
That is, in the state where the maximum capacity A of the workpiece W and the full width C of the machine are maintained, the twisting distance B of the saw blade 4 is increased, thereby extending the life of the body portion of the saw blade 4.
[0024]
In FIG. 9A, let B be the current value of the twisting distance of the saw blade 4.
[0025]
In this state, by arranging the first driven wheel 7A in the upper right region R2 and the second driven wheel 7B in the lower left region R3, a plurality of small diameter wheels 7A, 7B as a whole with respect to the single large diameter wheel 6 are arranged. Tilt.
[0026]
As a result, as shown in the figure, the twisting distance increases from B to B ′, and the life of the body of the saw blade 4 becomes longer, while the maximum capacity A of the workpiece W and the total width C of the machine are increased. Does not change and remains the current value.
[0027]
Therefore, according to the present invention, when the twisting distance B of the saw blade 4 is increased to satisfy the elements such as the twisting distance B of the saw blade 4, the maximum capacity of the workpiece W, which is another element, is satisfied. A and the full width C of the machine are maintained and these elements are not sacrificed.
[0028]
(2) When the maximum capacity A of the workpiece W is increased (FIG. 9B).
[0029]
That is, while maintaining the full width C of the machine and the twisting distance B ″ of the saw blade 4,
This is a case where the maximum capacity A of the workpiece W is increased, and this makes it possible to deal with a wide workpiece W ′.
[0030]
In FIG. 9B, the current value of the maximum capacity of the work W is A.
[0031]
In this state, by arranging the first driven wheel 7A in the upper left region R1 and the second driven wheel 7B in the lower left region R3, the plurality of small diameter wheels 7A, 7B as a whole with respect to the single large wheel 6 To separate.
[0032]
Thus, as shown in the figure, the maximum capacity of the workpiece W extends from A to A ′ and can correspond to a wide workpiece W ′, while the total width C of the machine and the twisting distance B ″ of the saw blade 4 are The current value remains unchanged.
[0033]
Therefore, according to the present invention, even when an element such as the maximum capacity A of the work W is satisfied by increasing the maximum capacity A of the work W, the full width C of the machine and the saw blade 4 which are other elements are satisfied. The twisting distance B ″ is maintained and those elements are not sacrificed.
[0034]
(3) When reducing the overall width C of the machine (FIG. 9C).
[0035]
That is, in the state where the twisting distance B ″ of the saw blade 4 and the maximum capacity A of the workpiece W are maintained, the overall width C of the machine is reduced, thereby saving space and reducing the size of the apparatus.
[0036]
In FIG. 9C, the current value of the full width of the machine is C.
[0037]
In this state, by arranging the first driven wheel 7A in the upper right region R2 and the second driven wheel 7B in the lower right region R4, a plurality of small diameter wheels 7A, 7B with respect to the single large diameter wheel 6 are arranged. Make the whole approach.
[0038]
As a result, the overall width of the machine is reduced from C to C ′ as shown in the figure, and the space is saved to reduce the size of the apparatus. On the other hand, the twisting distance B ″ of the saw blade 4 and the maximum of the workpiece W are reduced. Capacity A remains the same and maintains the current value.
[0039]
Therefore, according to the present invention, even when an element such as the full width C of the machine is satisfied by reducing the full width C of the machine, the twisting distance B ″ of the saw blade 4 which is another element and the maximum of the work W Capacity A is maintained and those elements are not sacrificed.
[0040]
In FIGS. 9A to 9C, the first driven wheel 7A and the second driven wheel 7B are arranged in the predetermined regions R1 to R4 according to each case. If a driven wheel arrangement mechanism of 3) or automatic (FIG. 7) is provided, it is possible to deal with various wheel arrangements (FIGS. 9A to 9C) using a single band saw.
[0041]
That is, in the housing 2 at one end of the cutting head 1 (FIG. 1), the drive wheel 6 is rotatably mounted by a drive motor (not shown), and is mounted in the housing 2 in the left-right direction (X-axis direction). A driven wheel mounting portion 17 to be described later is attached via the extending connecting members 18 and 19.
[0042]
The first driven wheel 7A and the second driven wheel 7B are mounted on the driven wheel mounting portion 17 via the respective housings 3A and 3B. Thus, the first driven wheel 7A and the first driven wheel 7A The second driven wheel 7B can be arranged in predetermined regions R1 to R4 according to the various cases described above (FIG. 9).
[0043]
A guide member 22 extending in the left-right direction (X-axis direction) is attached to the connecting member 18 of the cutting head 1 via brackets 20 and 21, and a fixed guide arm 9 is fixed to the guide member 22. In addition, a movable guide arm 8 is attached so as to be movable in the left-right direction (X-axis direction).
[0044]
In this case, the guide member 22 (FIGS. 1 and 2) is extended to the left beyond the driven wheel mounting portion 17, so that the movable guide arm 8 can be moved far as compared with the prior art. As described above, for example, the maximum capacity A of the workpiece W can be increased to A ′ (FIG. 9B).
[0045]
Furthermore, inserts 10 and 11 are provided at the lower ends of the both guide arms 8 and 9, respectively, and the saw blade 4 is twisted up by the inserts 10 and 11 so as to face vertically downward.
[0046]
On the other hand, the first driven wheel 7A and the second driven wheel 7B mounted on the driven wheel mounting portion 17 (FIG. 3) are rotatably mounted on the respective housings 3A and 3B.
[0047]
Each of the housings 3A and 3B has projecting portions 3A1, 3A2, 3B1, and 3B2 projecting in the left-right direction (X-axis direction). The housings 3A and 3B have a first driven wheel 7A and a second driven wheel 7B. In the built-in state, it is mounted on the driven wheel mounting portion 17 (for example, fixed with bolts 25 and 26).
[0048]
As shown in the figure, the driven wheel mounting portion 17 has an upper frame 17A and a lower frame 17B. The upper frame 17A has the first driven wheel 7A, and the lower frame 17B has the second driven wheel 7B. Are to be attached to each.
[0049]
Of these, the upper frame 17A is composed of vertical frames 17A1, 17A2, 17A3, and 17A4 extending in the vertical direction (Z-axis direction), and each frame is joined to the lower surface of the upper horizontal frame 17A5 and the upper surface of the intermediate horizontal frame 17A6. Has been.
[0050]
In this case, openings 23 and 24 are formed in the vertical frames 17A1, 17A2 and 17A3 and 17A4, and the openings 23 and 24 have protrusions 3A1 and 3A2 of the housing 3A in which the first driven wheel 7A is built. Is inserted and fixed by, for example, a bolt 25 or the like.
[0051]
The lower frame 17B includes vertical frames 17B1, 17B2, and 17B3, 17B4 extending in the vertical direction (Z-axis direction). Each frame is joined to the lower surface of the intermediate horizontal frame 17A6 and the upper surface of the lower horizontal frame 17B5. ing.
[0052]
In this case, the vertical frames 17B1, 17B2 and 17B3, 17B4 are formed with openings 27, 28, and the openings 27, 28 have protrusions 3B1, 3B2 of the housing 3B containing the second driven wheel 7B. Is inserted and fixed by, for example, a bolt 26 or the like.
[0053]
Further, the predetermined region R described above is set outside the driven wheel mounting portion 17 (FIG. 3), and the region R is divided into four parts, upper, lower, left and right, upper left region R1, upper right region R2, lower left region. R3 and lower right region R4.
[0054]
With this configuration, for example, as described in detail in FIG. 9A, the first driven wheel 7A is disposed in the upper right region R2 and the second driven wheel 7B is disposed in the lower left region R3, thereby providing a single large wheel. When the entire small-diameter wheels 7A and 7B are inclined with respect to the diameter wheel 6 and the twisting distance B is increased to B ', the following is performed.
[0055]
That is, the protrusions 3A1 and 3A2 of the housing 3A containing the first driven wheel 7A (FIG. 4) are inserted into the left opening 23 constituting the upper frame 17A of the driven wheel mounting portion 17 and passed therethrough. Then, it stops at the opening 24 on the right side, and in this state, the right and left ends of the protrusions 3A1 and 3A2 are fixed to the openings 23 and 24 with bolts 25.
[0056]
Further, the protrusions 3B1, 3B2 of the housing 3B containing the second driven wheel 7B (FIG. 4) are stopped in a state where they are inserted into the left opening 27 constituting the lower frame 17B of the driven wheel mounting portion 17, Only the right end of the protrusions 3B1 and 3B2 is fixed to the opening 27 with a bolt 26.
[0057]
As a result, as described above, the first driven wheel 7A and the second driven wheel 7B are arranged in the upper right region R2 and the lower left region R3, respectively (FIG. 9A), with respect to the single large-diameter wheel 6. Thus, the entire plurality of small diameter wheels 7A and 7B can be inclined.
[0058]
Further, for example, as described in detail in FIG. 9B, by arranging the first driven wheel 7A in the upper left region R1 and the second driven wheel 7B in the lower left region R3, a single large-diameter wheel In contrast, when the plurality of small-diameter wheels 7A and 7B are separated from each other and the maximum capacity A of the workpiece W is increased to A ', the first driven wheel 7A is also incorporated as shown in FIG. Only the right ends of the protruding portions 3A1, 3A2 of the housing 3A are fixed to the opening 23 with bolts 25, and only the right ends of the protruding portions 3B1, 3B2 of the housing 3B incorporating the second driven wheel 7B are fixed with bolts 26. The opening 27 is fixed.
[0059]
Further, for example, as described in detail in FIG. 9C, by arranging the first driven wheel 7A in the upper right region R2 and the second driven wheel 7B in the lower right region R4, a single large wheel is provided. When the entire small width wheels 7A and 7B are brought close to the diameter wheel 6 and the overall width C of the machine is reduced to C ', similarly, as shown in FIG. 6, a housing incorporating the first driven wheel 7A The right and left ends of the projecting portions 3A1 and 3A2 of 3A are fixed to the openings 23 and 24 with bolts 25, and the right and left ends of the projecting portions 3B1 and 3B2 of the housing 3B incorporating the second driven wheel 7B are bolts 26. To fix the openings 27 and 28.
[0060]
7 and 8 show the automatic arrangement mechanism of the first driven wheel 7A and the second driven wheel 7B as described above.
[0061]
In this case, the automatic placement mechanisms of the first driven wheel 7A and the second driven wheel 7B have the same configuration.
[0062]
That is, in FIG. 7, the guide rails 30 and 31 are provided in the vertical direction on the column frames 17C, 17D and 17E, 17F constituting the driven wheel mounting portion 17.
[0063]
The guide rails 30 and 31 extend to a position slightly beyond the central portion of the region R set outside the driven wheel mounting portion 17 described above. The guide rails 30 and 31 include the first rail described above. The housings 3A and 3B incorporating the driven wheel 7A and the second driven wheel 7B are slidably coupled, and can move in the left-right direction (X-axis direction).
[0064]
Hydraulic cylinders 36 and 37 are coupled to the housings 3A and 3B, and length measuring racks 32 and 34 are attached to the housings 3A and 3B. The racks 32 and 34 mesh with the pinions 33 and 35 of the encoders E1 and E2. ing.
[0065]
With this configuration, for example, when the first driven wheel 7A is disposed in the upper right region R2 (FIG. 8), if the feedback signal from the encoder E1 is input to the NC device (not shown), it is set as the current value. The first driven wheel 7A can be automatically arranged in the upper right region R2 by driving and controlling the hydraulic cylinder 36 so as to coincide with the target value stored in advance.
[0066]
In this case, the second driven wheel 7B can also be automatically arranged in the lower left region R3 in the same manner, so that, for example, a plurality of small diameter wheels 7A, The entire 7B can be tilted (FIG. 9A).
[0067]
In the present embodiment, the case where the present invention is applied to a horizontal type band saw machine and a hinge type band saw machine (FIG. 1) has been described in detail. Of course, the present invention is also applied to a type band saw and a post type band saw and exhibits the same operation and effect.
[0068]
【The invention's effect】
As described above, according to the present invention, in the band saw machine, when one of the maximum capacity of the workpiece, the twisting distance of the saw blade, and the full width of the machine is satisfied, the other elements are sacrificed. There is an effect that does not.
[0069]
Moreover, if the driven wheel arrangement | positioning mechanism of FIG. 2 or FIG. 7 is installed, there exists an effect that it can respond to various wheel arrangement | positioning (FIG. 9 (A)-FIG. 9 (C)) with one band saw machine.
[0070]
[Brief description of the drawings]
FIG. 1 is an overall front view showing an embodiment of the present invention.
FIG. 2 is a diagram showing a relationship between a single large-diameter wheel 6 and a plurality of small-diameter wheels 7A and 7B constituting the present invention, and an arrangement region of the plurality of small-diameter wheels 7A and 7B.
FIG. 3 shows a manual driven wheel placement mechanism according to the present invention.
FIG. 4 is a diagram showing an arrangement relationship between the first driven wheel 7A and the second driven wheel 7B using the mechanism of FIG. 3 when the twisting distance B is increased according to the present invention.
FIG. 5 is a diagram showing an arrangement relationship between the first driven wheel 7A and the second driven wheel 7B using the mechanism of FIG. 3 when the maximum capacity A of the workpiece W is increased according to the present invention.
6 is a view showing the arrangement relationship between the first driven wheel 7A and the second driven wheel 7B using the mechanism of FIG. 3 when the full width C of the machine is reduced according to the present invention.
FIG. 7 shows an automatic driven wheel placement mechanism according to the present invention.
FIG. 8 is a detailed perspective view of FIG. 7;
FIG. 9 is an operation explanatory diagram of the present invention.
FIG. 10 is an explanatory diagram of the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cutting head 2 Housing 3A of driving wheel 6 Housing 3B of 1st driven wheel 7A Housing of 2nd driven wheel 7B 4 Band saw blade 5 Beam member 6 Driving wheel 7 Driven wheel 7A 1st driven wheel 7B 2nd driven wheel 8 and 9 Guide arm 10, 11 Insert 12 Cutting head turning cylinder 13 Hinge pin 14 Base 15 Body vise 16 Processing table 17 Drive wheel mounting portion 18, 19 Connecting member 20, 21 Bracket 22 Guide member 23, 24, 27, 28 Opening 25, 26 Bolts 30, 31 Guide rails 32, 34 Measuring racks 33, 35 Pinions 36, 37 of encoders E1, E2 Hydraulic cylinders E1, E2 Encoder L Cutting area W Workpiece W Workpiece

Claims (6)

A drive wheel and a driven wheel wound with a band-shaped endless saw blade are provided on both sides of the cutting head, the driven wheel is composed of a plurality of small-diameter wheels, and the drive wheel is composed of a single large-diameter wheel. In the band saw machine in which the diameter of the small diameter wheel is set to ½ or less of the diameter of the large diameter wheel,
A predetermined area consisting of an upper left area, an upper right area, a lower left area, and a lower right area, which is divided into upper, lower, left and right, is set in the arrangement area of the first driven wheel and the second driven wheel constituting the small diameter wheel . The band saw machine, wherein the driven wheel can be arranged in the upper left area or the upper right area, and the second driven wheel can be arranged in the lower left area or the lower right area.   The band saw machine according to claim 1, wherein a plurality of small-diameter wheels are attached to the single large-diameter wheel so as to approach, separate from, or tilt. A band saw wheel positioning method using the band saw machine according to claim 1,
(1) To increase the twisting distance of the saw blade while maintaining the maximum capacity of the workpiece and the entire width of the machine, the entire multiple small diameter wheels are inclined with respect to a single large diameter wheel.
(2) To increase the maximum capacity of the workpiece while maintaining the full width of the machine and the twisting distance of the saw blade, separate the entire multiple small diameter wheels apart from a single large diameter wheel.
(3) When reducing the overall width of the machine while maintaining the twisting distance of the saw blade and the maximum capacity of the workpiece, it is characterized in that a plurality of small diameter wheels are brought close to a single large diameter wheel. The band saw wheel placement method. The band saw wheel arranging method according to claim 3 , wherein in the case of (1), the first driven wheel is arranged in the upper right region and the second driven wheel is arranged in the lower left region. 4. The band saw wheel arranging method according to claim 3 , wherein in the case of (2), the first driven wheel is arranged in the upper left area and the second driven wheel is arranged in the lower left area. 4. The band saw wheel arranging method according to claim 3 , wherein in the case of (3), the first driven wheel is arranged in the upper right region and the second driven wheel is arranged in the lower right region.

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