JP3415661B2 - Automatic adjustment device for saw blade guide in vertical band sawing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic adjusting device for a saw blade guide in a sawing machine such as a horizontal band sawing machine or a vertical band sawing machine. 2. Description of the Related Art Conventionally, as known in, for example, Japanese Patent Publication No. 1-16066, a horizontal band sawing machine includes a movable vice jaw of a main body vise for holding a work, and a movable saw blade. The moving saw blade guide of the saw blade guide to be guided is configured to be completely integrated and interlocked. [0003] In the above-mentioned prior art, the moving saw blade guide is moved in accordance with the clamping and unclamping operations by moving the moving vice jaws of the main body vise. Further, even during cutting, the moving saw jaw guide and the moving saw blade guide cannot be fixed because of the mechanism that works together with the moving saw jaw. For this purpose, means for increasing the length of the slide portion and reducing the play of the slide are required, and measures have been taken. An object of the present invention is to improve the above problem by automatically adjusting the position of the movable saw blade guide in accordance with the clamp position of the movable vice jaw by utilizing the movement of the movable vice jaw. An object of the present invention is to provide an automatic adjusting device for a saw blade guide in a sawing machine which can be set to an optimum position. In order to achieve the above object, an automatic saw blade guide adjusting device according to the present invention is provided with a main body vise for holding a work, and a saw blade capable of reciprocating in a horizontal direction. A vertical band sawing machine comprising a housing provided with a saw blade guide for guiding a vertically movable band saw blade, a vertically movable movable body vice jaw provided on a vice frame of the main body vise, and the saw blade guide is provided. The movable saw blade guide is provided so as to be vertically movable along a guide provided on the saw blade housing, and a locking device for locking or unlocking the movable saw blade guide with respect to the guide is provided on the movable saw blade guide. The moving saw blade guide is provided with a detachable jaw member above the moving body vice jaw, and the locking device is unlocked when the locking device is in an unlocked state. The gist is that the movable saw blade guide is provided so as to move up and down following the up and down movement of the moving body vise jaw. When the moving saw jaw is raised by, for example, raising the moving vice jaw by unlocking the moving saw blade guide by the lock device by employing the automatic adjusting device for the saw blade guide in the sawing machine of the present invention. And the moving saw blade guide is pushed up. Further, even if the movable vice jaw is lowered by, for example, lowering the movable vice jaw with the locking device in the locked state, the movable saw jaw is only lowered and has no effect on the movable saw jaw guide. When the lock of the moving saw blade guide is released, the moving saw blade guide moves down and comes into contact with the moving vice jaw. When the moving vice jaw moves down, the moving saw blade guide also moves down. An embodiment of the present invention will be described below in detail with reference to the drawings. Referring to FIGS. 8 and 9, for example, a vertical band sawing machine 1 as a sawing machine is provided with a base 3, on which a work W to be cut is placed and supported. A roller conveyor 7 is provided as a carry-in table for carrying a number of rollers 5 for carrying in. A chip conveyor 11 that is driven by a motor 9 is provided below the base 3. A vertical saw blade housing 13 is provided which reciprocates in a direction (left and right directions in FIGS. 8 and 9) orthogonal to the work W loaded on the rollers 5 of the roller conveyor 7. I have. The saw blade housing 13 is provided so as to be reciprocated by being moved left and right in FIG. 8 by a drive motor or a moving cylinder (not shown). A driving wheel 17 rotatably driven by a saw blade motor 15 is rotatably provided in a lower portion inside the saw blade housing 13, and a driven wheel 19 is rotatably driven in an upper portion. Is provided. An endless band saw blade 21 is wound around the driven wheel 19 and the drive wheel 17. When the saw blade motor 15 is driven, the drive wheel 17 is driven to rotate and the band saw blade 2 is driven.
The workpiece W is cut by moving the saw blade housing 13 in a direction perpendicular to the workpiece W (the left-right direction in FIG. 8). A pair of guide rails 23 are juxtaposed on the left upper surface of the base 3 in FIG. And on this guide rail 23,
A feeding vise 25 for gripping the work W placed on the roller conveyor 7 in the horizontal direction and feeding the work W to the cutting position, and a front for gripping and fixing the work W in the horizontal direction near the band saw blade 21. A vise 27 is provided so as to be reciprocally movable in the work W loading direction. As the material feeding vise 25, a reference material feeding vise jaw 29 is provided on the right side of the roller 5 in FIG.
This moving material vice jaw 31 is moved in the left-right direction in FIG. 9 by a moving cylinder. The material feeding vise 25 is moved vertically in FIG. 9 by the material feeding cylinder 33. As the front vise 27, a material vise 2
9, a reference vise jaw 35 is provided on the right side of the roller 5 in FIG. 9, and a vice jaw 37 before movement is provided on the left side of the roller 5, and the vice jaw 37 before movement is moved by a moving cylinder. It is moved in the left-right direction in FIG. The front vise 27 is moved in the vertical direction in FIG. An NC device 43 for controlling the vertical band sawing machine 1 is provided on a front frame 41 provided above the base 3 . With this NC device 43, the vertical band sawing machine 1
Is controlled by the NC, and the workpiece is automatically cut. Referring to FIGS. 4, 5, 6, and 7, between the forward end position of the material feeding vise 25 and the rearward end position of the front vise 27, as shown in FIG. The vise frame 47 of the main body vise 45 is provided on the base 3. A plurality of guide rails 49 extend in the vertical direction and are attached to the front side (left side in FIG. 6) of the vise frame 47 with a plurality of bolts. The guide rail 49 is provided with a slide plate 51 which is movable in the vertical direction. A moving body vice jaw 53 is attached to the slide plate 51 with a plurality of bolts. The vise frame 4
7 is provided with a plurality of bolts 57 for vertically moving the moving body vice jaws 53 for vertically moving the moving body vice jaws 53.
Installed in. A piston rod 59 mounted on the vertical moving cylinder 55 is connected to the slide plate 51. With the above configuration, the vertical moving cylinder 55
Is operated, the piston rod 59 expands and contracts, and the slide plate 51 is guided by the guide rail 49 and is moved up and down, so that the movable body vice jaw 53 is also moved up and down. Referring to FIGS. 1, 2 and 3, the saw blade housing 13 has a guide 61 extending vertically.
Is installed. This guide 61 has a saw blade guide 6
The movable saw blade guide 65 of the three is provided to be vertically movable. The fixed saw blade guide of the saw blade guide 63 is not shown, but is provided below the saw blade housing 13. The movable saw blade guide 65 is provided with a lock cylinder 67 as a lock device. A base 71 is attached to a piston rod 69 mounted on the lock cylinder 67. When the lock cylinder 67 is operated to contract the piston rod 69 in FIG. 2, the base 71 is engaged with the wedge 61K provided at the tip of the guide 61, and the movable saw blade guide 65 is moved to the guide 61 in FIG. Will be locked. When the piston rod 69 is extended,
The base 71 is unlocked by separating from the wedge 61K of the guide 61. As shown in FIG. 1, the moving saw blade guide 65 has a rack member 73 extending vertically.
Is mounted, and a pinion 75 meshed with the rack member 73 is rotatably supported by the guide 61. In addition, an encoder 77 is provided on the rotation shaft of the pinion 75. The moving saw blade guide 61 is provided with a gas spring 79. A jaw member 65A is integrated with the movable saw blade guide 65 on the upper right side in FIG. With the above arrangement, when the movable saw blade guide 65 is moved up and down with respect to the guide 61, the rack member 73 is moved up and down, so that the pinion 77 is rotated and the encoder 7 is rotated.
7, the moving amount of the moving saw blade guide 65 is detected. As shown in FIG. 1, there is a relationship in which the distal end of the moving body vice jaw 53 is disposed below the jaw member 65A of the moving saw blade guide 65. Accordingly, as shown in FIG. 2, the base 71 is moved from the state in which the lock cylinder 67 is actuated to lock the base 71 to the wedge 61 </ b> K of the guide 61 (locked state).
When the movable body vice jaw 53 is lifted up in a state where the movable body vice jaw 53 is lifted up (unlocked state), the movable body vice jaw 53 hits the jaw member 65A of the movable saw blade guide 65, and the movable saw blade guide 65 is pushed up. Conversely, even if the movable body vice jaw 53 is lowered while the movable saw blade guide 65 is locked, the movable body vice jaw 53 is only lowered and fixed without affecting the movable saw blade guide 65 at all. It is in the position. When the lock of the movable saw blade guide 65 is released, the movable saw blade guide 65 is lowered by its own weight and the gas spring 79, and the jaw member 65 </ b> A of the movable saw blade guide 65 hits the movable body vice jaw 53. When the moving body vice jaw 53 moves down, the moving saw blade guide 65 also moves down. Next, the overall operation will be described. The lock of the base 71 moved by the lock cylinder 67 which has locked the movable saw blade guide 65 is released. At this time, the insert portion of the moving saw blade guide 65 is also opened. Then, when the height of the workpiece W to be processed next is lower than the height of the workpiece W currently being processed, the workpiece W is loaded as it is and the movable body vice jaw 53 is lowered.
5 is lowered by following the body moving vise jaw 53 by its own weight and the gas spring 79. When the main body moving vice jaw 53 descends and clamps the work W, the moving saw blade guide 65 also stops. Next, when the movable body vice jaw 53 is raised,
The moving saw blade guide 65 is also pushed up. The movable saw blade guide 65 is fixed at the base 71 by operating the lock cylinder 67. Through this series of operations, the moving saw blade guide 65 is adjusted to the optimum position according to the work W. After this state, the moving body vice jaw 5
The clamping and unclamping of No. 3 are performed as usual. Moreover, since the movable body vice jaw 53 is in a clamped state during cutting, the movable body vice jaw 53 and the movable saw blade guide 65 do not come into contact with each other. When the height of the workpiece W to be processed next is higher than the height currently being processed, the lock cylinder 67 is operated to unlock the base 71. At this time, the insert portion of the moving saw blade guide 65 is also opened. After raising the movable body vice jaw 53 to a height at which the workpiece W can pass, the movable body vice jaw 53 is lowered. At this time, the moving saw blade guide 65 also moves up and down following the moving body vice jaw 53. Subsequent operations are the same as those in the case where the height of the work W is low, and thus the description is omitted. In the above-described embodiment, there is no horizontal vice jaw. However, if there is a horizontal vice jaw, the moving saw blade guide 65 may interfere with the horizontal vice jaw. It is necessary to determine whether or not follows the moving body vice jaw 53 or stops against the horizontal vice jaw. To this end, the rack member 73 is provided on the movable saw blade guide 65, and the pinion 75 and the encoder 77 are provided on the guide 61 so that the position of the movable saw blade guide 65 can be detected. The operation in this case is the same as the operation of the above-described embodiment until the movable body vice jaw 53 descends and clamps the work W. Next, when the movable body vice jaw 53 is raised, the unclamping is stopped by a signal that the movable saw blade guide 65 is slightly moved upward, the lock cylinder 67 is operated, and the movable saw blade guide 65 is fixed at the base 71. . When the height of the work W is lower than the height of the horizontal vice jaw, the moving saw blade guide 65 stops against the horizontal vice jaw. The moving saw blade guide 65 remains in contact with the horizontal vice jaw. Actually, it is necessary that the moving saw blade guide 65 is moved upward from the stop position (contact position). Since the encoder 77 is provided, it is possible to measure the height of the work W and to check the dimensions of the work W. As described above, the position of the moving saw blade guide 65 can be automatically set in accordance with the clamp position of the moving body vice jaw 53 by using the movement of the moving body vice jaw 53. Therefore, the moving saw blade guide 65 can be reliably set at the optimum position without providing a new actuator. Since the moving saw blade guide 65 is firmly fixed, it becomes rigid as in the related art. The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. For example, in this embodiment, a vertical band saw machine has been described as an example, but a horizontal band saw machine or the like can be applied. The moving saw blade guide 65 may be fixed by other fixing means other than the means performed by the lock cylinder 67 and the base 71. An ordinary spring may be used in addition to the gas spring 79, and the moving saw blade guide 65 may be made to have its own weight so that it can follow only by its own weight. Alternatively, the band saw blade 21 may be slowly rotated in the cutting direction to follow the moving body vice jaw 53 by utilizing the frictional force generated by the clamp of the insert portion of the moving saw blade guide 65. Although the following description has been made of the example in which the follow-up of the movable body vice jaw 53 and the movable saw blade guide 65 is detected by the encoder 77, it may be detected by a limit switch or a proximity switch. In that case, a limit switch or a proximity switch is provided on either the moving body vice jaw 53 or the moving saw blade guide 65, and when the moving body vice jaw 53 and the moving saw blade guide 65 are following or not. And judge. Then, the workpiece W is clamped, and when the workpiece W is being followed, the movable body vice jaw 53 is raised and set slightly by a timer or the like. When not following, the moving body vice jaw 53 is raised, and after following detection is performed, the moving body vice jaw 53 is set by slightly rising with a timer or the like. As will be understood from the above description of the embodiment, according to the present invention, since the structure is as described in the claims, the movement of the movable body vise jaw is described. , The position of the movable saw blade guide can be automatically set in accordance with the clamp position of the movable body vice jaw. After the setting, the moving saw blade guide can be firmly fixed. Therefore, the moving saw blade guide can be reliably set at the optimum position without providing a new actuator. Since the moving saw blade guide is firmly fixed, it becomes rigid as before.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an enlarged front view of a portion where a moving saw blade guide is provided in a saw blade housing. FIG. 2 is a plan view of FIG. FIG. 3 is a side view of FIG. FIG. 4 is an enlarged front view of a portion where a main body vise is provided on a base. FIG. 5 is a plan view of FIG. FIG. 6 is a side view of FIG. FIG. 7 is a sectional view taken along line VII-VII in FIG. FIG. 8 is a front view of a vertical band saw machine according to an embodiment of the present invention. FIG. 9 is a plan view of FIG. [Description of Signs] 1 vertical band saw machine (saw machine) 13 saw blade housing 21 band saw blade 45 body vise 47 vice frame 53 body moving vice jaw 61 guide 63 saw blade guide 65 moving saw blade guide 67 lock cylinder (lock device) 71 Base 73 Rack member 75 Pinion 77 Encoder 79 Gas spring

Claims (1)

(57) [Claim 1] A main body vise for holding a workpiece is provided, and a saw blade guide for guiding a vertically movable band saw blade to a saw blade housing which is reciprocally movable in a horizontal direction is provided. A vertical band sawing machine provided with a movable main body vice jaw movable up and down on a vise frame of the main body vise, and a movable saw blade guide among the saw blade guides provided on the saw blade housing. The movable saw blade guide is provided so as to be movable up and down along with the movable saw blade guide, and a lock device for locking or unlocking the movable saw blade guide with respect to the guide is provided on the movable saw blade guide. A detachable jaw member is provided, and the movable saw blade guide moves up and down following the up and down movement of the moving body vise jaw when the lock device is in an unlocked state. Saw blade guide automatic adjuster in a vertical band saw machine, wherein provided things like.