JP4338248B2 - Vertical band saw machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vertical band saw , and more particularly to a vertical band saw capable of preventing chips generated during workpiece cutting from being caught between a cutting endless blade and a wheel.
[0002]
[Prior art]
Conventionally, for example, a horizontal band saw or a saddle band saw is known as a cutting machine. Both of the band saw machines cut the workpiece clamped by the vise device with an endless band saw blade wound around a drive wheel and a driven wheel.
[0003]
[Problems to be solved by the invention]
By the way, in the conventional cutting machine, the chips generated by cutting when cutting the workpiece enter between the band saw blade and the wheel and are crushed and attached to the wheel. If attached, it will not fall off the wheel easily and will be repeatedly crushed. For this reason, there has been a problem in that the body of the band saw blade is deformed such as dents or scratches.
[0004]
This promotes repeated rotational fatigue of the band saw blade, which significantly shortens the life of the band saw blade. In addition, the band saw blade does not adhere to the wheel accurately, so the band saw blade is displaced from the correct position and machining accuracy is reduced. There was a problem.
[0005]
In addition, when the chips enter, the wheel slips and the processing accuracy is lowered, and the wheel itself is abnormally worn.
[0006]
In order to solve the various problems described above, a means for providing a sheet metal cover or removing the chips adhering to the band saw blade with a brush is employed, but either method removes 100% chips. In particular, in a vertical band saw, there is a processed part at the top of the wheel, and the chips fall directly onto the wheel and the band saw blade, so the above-mentioned problems are remarkable.
[0007]
The present invention has been made to solve the above-mentioned problems, and its object is to minimize the entanglement of chips on the wheel and still remove the entangled chips from the wheel to reduce the length of the endless blade. An object of the present invention is to provide a saddle-type band saw machine which is intended to extend the service life and improve machining accuracy, and to prevent wheel slip and wheel wear.
[0008]
[Means for Solving the Problems]
The present invention has been made in view of the conventional problems as described above. A driven wheel is rotatably provided above a drive wheel (7) linked to a drive motor (5), and the drive wheel (7) A vertical band saw machine having a configuration in which a cutting endless blade (9) is wound around a driven wheel, and chips generated during cutting of the workpiece (W) are generated by the cutting endless blade (9) and the drive. A chip intrusion prevention device (13) is provided so as not to be caught between the peripheral surface of the wheel (7), and the chip intrusion prevention device (13) has the cutting endless blade (9) as described above. An inner surface of the cutting endless blade (9) is formed in a substantially triangular region between a portion of the drive wheel (7) that moves in a direction in contact with the peripheral surface and the peripheral surface of the drive wheel (7). And said The first chip guard block (15) having a substantially triangular shape provided with a sliding contact surface slidably contacting the peripheral surface of the moving wheel (7), and adjacent to the first chip guard block (15) A second chip guard block (15A) for covering the upper portion of the drive wheel (7) is provided, and the chip intrusion prevention device (13) further removes the chips adhering to the peripheral surface of the drive wheel (7). In order to remove, the chip removal block (17) having a curved contact surface along the peripheral surface of the drive wheel (7) is always in contact with the peripheral surface near the top of the drive wheel (7). And biased in the direction of contact .
[0009]
Further, the vertical band saw machine includes notch grooves (19) inclined with respect to the rotation direction of the drive wheel (7) at two locations on the contact surface of the chip removal block (17), and the drive Each notch groove (19) is provided with a fluid ejection port for ejecting fluid that flows out the chips on the peripheral surface of the wheel (7) .
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The cutting machine includes, for example, a horizontal band saw machine and a saddle type band saw machine. In this embodiment, a vertical band saw machine will be described as an example. Since this saddle-shaped band saw machine has a known configuration, the overall configuration and detailed description thereof will be omitted.
[0020]
Referring to FIG. 2, a vertical band saw machine 1 that omits the overall configuration according to the present embodiment includes a drive wheel 7 that is linked to a U-shaped saw blade housing 3 in conjunction with a drive motor 5, and the drive wheel. A driven wheel (not shown) that can be moved up and down by a small amount is provided directly above 7 and a cutting endless blade 9 is wound around the drive wheel 7 and the driven wheel. In order to apply tension to or loosen the endless blade 9 for cutting, the driven wheel can be moved up and down by a slight amount through known means.
[0021]
Although not shown in detail because it is a known means, the saw blade housing 3 includes a saw blade housing 3 in order to turn the cutting edge of the cutting endless blade 9 in the cutting region forward and to change the direction to 90 degrees. A pair of saw blade inserts 11 are arranged vertically (the upper saw blade insert is not shown). Each saw blade insert 11 is in a clamp-released state and a half-clamped state (a state in which the cutting endless blade 9 in the cutting region is relatively not bent and can keep the cutting endless blade 9 running properly). It can be switched appropriately. The saw blade insert 11 provided on the upper side can be adjusted in the vertical direction. The workpiece W to be processed is held by the fixed vise 10F and the moving vise 10M.
[0022]
With the above configuration, in order to cut the workpiece W gripped by the fixed vise 10F and the moving vise 10M, the upper saw blade insert 11 is appropriately operated in the desired workpiece cutting direction and driven by the drive motor 5. The drive wheel 7 is rotated and the cutting endless blade 9 is run from the upper side to the lower side in FIG.
[0023]
Chips W _s are generated during the cutting of the workpiece W, and the chip intrusion prevention device 13 cuts the chips W _{s so} that the chips W _s are not caught between the cutting endless blade 9 and the peripheral surface of the drive wheel 7. The blade housing 3 is provided.
[0024]
More specifically, referring to FIGS. 1 to 3, the chip intrusion prevention device 13 includes a blade contact surface of the drive wheel 7 and a wheel contact surface of the cutting endless blade 9 wound around the drive wheel 7. It is provided in between.
[0025]
More specifically, a substantially triangular shape is formed between a portion on the side where the cutting endless blade 9 moves in a direction in contact with the periphery of the drive wheel 7 by the rotation of the drive wheel 7 and the periphery of the drive wheel 7. The chip intrusion prevention device 13 is arranged in the region to be presented so that the chips W _s are not caught between the inner surface of the cutting endless blade 9.
[0026]
That is, the seat plate (not shown) provided in the saw blade housing 3 has a substantially triangular shape provided with a sliding contact surface that is in sliding contact with part of the inner surface of the cutting endless blade 9 and part of the periphery of the drive wheel 7. The 1st chip guard block 15 which did is fixed with the volt | bolt etc. Since the cutting endless blade 9 is twisted by the saw blade insert 11, the sliding contact surface of the first chip guard block 15 in sliding contact with the cutting endless blade 9 is a three-shaped curved surface. No. 15 is made of a cast or the like so as to make a mold with clay and to be in close contact with the body of the endless blade 9 for cutting and the periphery of the drive wheel 7.
[0027]
In FIG. 1, a second chip guard block 15 </ b> A adjacent to the first chip guard block 15 and covering the upper portion of the drive wheel 7 is fixed to the saw blade housing 3 with a bolt BT or the like.
[0028]
As a function of the above configuration, the chips W _s generated during the cutting of the workpiece W fall and adhere to the upper surface of the first chip guard block 15. However, in addition to removing the chips Ws adhering to the body of the chip removal portion at the portion indicated by the arrow A in FIG. 2, the chips Ws falling from the processing portion are separated from the drive wheel 7. The first chip guard block 15 itself prevents entry between the cutting endless blades 9.
[0029]
For this reason, it is possible to minimize the occurrence of the chips Ws in the drive wheel 7. However, sometimes it is not possible to prevent the chips Ws from entering between the band saw blade and the drive wheel 7 from time to time.
[0030]
Therefore, as shown in FIGS. 1 to 3, for example, a chip removing block 17 as a chip removing member for removing the chips W _s adhering to the peripheral surface of the drive wheel 7 includes a drive wheel 7. It is provided so that it may always contact the peripheral surface of the vicinity of the top.
[0031]
More specifically, the chip removal block 17 has a block shape, and a contact surface with the peripheral surface of the drive wheel 7 has a curved shape along the peripheral surface of the drive wheel 7. A notch groove 19 that is inclined with respect to the rotation direction is provided. Therefore, when the chips W _s adhering to the circumferential surface of the drive wheel 7 is scraped by the contact surface, the scraping has been chips W _s is the within cutout groove 19 as shown in FIG. 3 It is moved obliquely in the direction of arrow B and discharged from the peripheral surface of the drive wheel 7.
[0032]
Further, the notch groove 19 of the chip removal block 17 is provided with, for example, a cutting oil outlet 21 as a fluid outlet for ejecting, for example, cutting oil as a fluid to flow out the chips W _s on the peripheral surface of the drive wheel 7. A cutting oil supply pipe 23 is connected to the cutting oil jet port 21 for supplying the cutting oil.
[0033]
As shown in FIG. 4, the chip removal block 17 is always in contact with the peripheral surface of the drive wheel 7 by a guide body 27 having a downward U-shaped section attached to the saw blade housing 3 with a screw 25. It is configured to be guided in the direction. In addition, a long hole 29 that is long in the vertical direction is provided in the guide body 27 so as to penetrate both side surfaces of the guide body 27, and as shown in FIGS. For example, a shaft pin 31 is inserted as a support member that resists the frictional force caused by the rotation of the drive wheel 7 and prevents the chip removal block 17 from moving, and both ends of the shaft pin 31 are fixed to the guide body 27. Yes.
[0034]
Further, as shown in FIG. 1, the chip removal block 17 is urged by two springs 33 in the present embodiment so as to always contact the peripheral surface of the drive wheel 7. Since the shaft pin 31 is inserted into the long hole 29, the contact surface of the chip removal block 17 is evenly pressed against the peripheral surface of the drive wheel 7.
[0035]
With the above configuration, the chips W _s adhering to the peripheral surface of the drive wheel 7 are reliably scraped by the contact surface of the chip removal block 17 as the drive wheel 7 rotates, and move obliquely in the notch groove 19. It is discharged from the peripheral surface of the drive wheel 7.
[0036]
Moreover, since the cutting oil is ejected from the cutting oil outlet 21 into the notch groove 19 through the cutting oil supply pipe 23, the cutting powder W _s in the notch groove 19 is easily cut from the peripheral surface of the drive wheel 7 with the cutting oil. It flows out.
[0037]
Therefore, even if the chips W _s enter and adhere to the peripheral surface of the drive wheel 7, the chips are removed by the chip removal block 17 as described above, so the drive wheel 7 does not slip or wear. In addition, since the cutting endless blade 9 does not dent and does not break, the life of the cutting endless blade 9 can be extended and the processing accuracy can be improved.
[0038]
In the present embodiment, the fluid ejected from the fluid ejection port is the cutting oil, but water or air is also possible.
[0039]
The present invention is not limited to the embodiment of the invention described above, and can be implemented in other modes by making appropriate modifications.
[0040]
【The invention's effect】
As understood from the embodiments of the invention as described above, according to the present invention , even if chips enter and adhere to the peripheral surface of the drive wheel, the wheel can be removed by the chip removing member. No slip and no abnormal wear. In addition, since the endless blade does not dent and does not break, it is possible to extend the life of the endless blade and improve processing accuracy.
[Brief description of the drawings]
FIG. 1 shows an embodiment of the present invention, and is a front view showing a chip removing member and a chip intrusion prevention device.
2 is a plan view of FIG. 1. FIG.
FIG. 3 is a left side view of FIG. 1;
4 is an enlarged sectional view taken along line IV-IV in FIG. 2. FIG.
[Explanation of symbols]
1 竪 type band saw machine (cutting machine)
3 Saw blade housing 7 Drive wheel (wheel)
9 Endless blade for cutting (endless blade)
13 Chip Intrusion Prevention Device 15 First Chip Guard Block 15A Second Chip Guard Block 17 Chip Removal Block (Chip Removal Member)
19 Notch groove 21 Cutting oil outlet (fluid outlet)
23 Cutting oil supply pipe 27 Guide body 31 Shaft pin (support member)
33 Spring

Claims (2)

A drive wheel (7) linked to the drive motor (5) is rotatably provided with a driven wheel, and a cutting endless blade (9) is wound around the drive wheel (7) and the driven wheel. It is a type band saw, and the chips generated during the cutting of the workpiece (W) are prevented from being caught between the cutting endless blade (9) and the peripheral surface of the drive wheel (7). An intrusion prevention device (13) is provided, and the chip intrusion prevention device (13) is a portion on the side where the cutting endless blade (9) moves in a direction in contact with the peripheral surface of the drive wheel (7). And a sliding contact surface in sliding contact with the inner surface of the cutting endless blade (9) and the peripheral surface of the drive wheel (7), in a region having a substantially triangular shape between the driving wheel (7) and the peripheral surface of the driving wheel (7). Almost triangular The first chip guard block (15) having a shape and the second chip guard block (15A) for covering the top of the drive wheel (7) adjacent to the first chip guard block (15). ), And the chip intrusion prevention device (13) has a curved shape along the peripheral surface of the drive wheel (7) in order to remove chips adhering to the peripheral surface of the drive wheel (7). The chip removal block (17) having the contact surface is always in contact with the peripheral surface near the top of the drive wheel (7) and urged in the contact direction. Type band saw. The vertical band saw machine according to claim 1, further comprising notch grooves (19) inclined with respect to the rotation direction of the drive wheel (7) at two locations on the contact surface of the chip removal block (17). The saddle type band saw machine , wherein each notch groove (19) is provided with a fluid ejection port for ejecting fluid that flows out the chips on the peripheral surface of the drive wheel (7) .

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