JP5427544B2 - Band saw blade clamping method by band saw blade guide device and band saw blade guide device - Google Patents

Description

  The present invention relates to a band saw blade clamping method and a band saw blade guide device using a band saw blade guide device in a band saw machine. More specifically, the band saw blade body is formed by a fixed insert block and a movable insert block provided in the band saw blade guide device. When sandwiching and guiding, the gap between the fixed insert block and the movable insert block is always maintained at an appropriate gap even when the thickness of the body portion of the band saw blade varies depending on the type of the band saw blade. The present invention relates to a band saw blade holding method using a band saw blade guide device and a band saw blade guide device.

  There are two types of band saw machines: vertical band saw machines and horizontal band saw machines.When cutting a workpiece with the band saw blades, the band saw blade body is positioned at both sides of the workpiece close to the workpiece. A band saw blade guide device is provided for holding and guiding. The band saw blade guide device includes a back support member for supporting and guiding the back portion of the band saw blade, a fixed insert block and a movable insert block for sandwiching and guiding the trunk portion of the band saw blade, and the movable insert block being fixed. Insert block pressing means for pressing toward the insert block side.

  Conventionally, the insert block pressing means generally has a configuration in which an eccentric cam is rotated to press the movable insert block, or a configuration in which the movable insert block is pressed by a small hydraulic cylinder. In the configuration using the eccentric cam, the position where the movable insert block is moved to the fixed insert block side is always constant, so that the position between the fixed insert block and the movable insert block corresponds to the thin band saw blade of the body portion. When the gap is set to an appropriate gap, in the case of a band saw blade having a thick body, there is a problem that the body of the band saw blade may be firmly held between the fixed insert block and the movable insert block. Conversely, when the gap is set corresponding to a band saw blade with a thick barrel, when the band saw blade is thin, a large gap is generated between the band saw blade and the insert block, and the band saw blade is inclined and bent. There is a problem that it is easy to produce.

  In the configuration in which the movable insert block is pressed by a small hydraulic cylinder, the band saw blade body is always firmly held and guided by the fixed insert block and the movable insert block regardless of the thickness of the band saw blade. Therefore, there is a problem that both insert blocks are heavily worn and the power for driving the band saw blade is increased.

  In view of this, the movable insert block is slightly returned after the body portion of the band saw blade is firmly held between the fixed insert block and the movable insert block (see, for example, Patent Document 1).

JP 2003-340640 A

  In the configuration described in Patent Document 1, the movable insert block is moved to the fixed insert block side by the hydraulic cylinder, and the body portion of the band saw blade is firmly sandwiched between the fixed insert block and the movable insert block. The pressure oil inside is sucked into the small cylinder of the booster and the movable insert block is slightly returned. Therefore, the gap between the fixed insert block and the movable insert block can be maintained at an appropriate gap regardless of the thickness of the body portion of the band saw blade.

  However, since the hydraulic circuit has a booster, there is a problem that the configuration of the hydraulic circuit is complicated.

  The present invention has been made in view of the above-described conventional problems, and is a band saw blade clamping method using a band saw blade guide device in a band saw machine, and includes a fixed insert block and a movable insert block provided in the band saw blade guide device. When sandwiching the body of the band saw blade, the fixed insert block is held in a state of being finely moved from the reference position of the fixed insert block toward the movable insert block, and disposed between the fixed insert block and the movable insert block. After the movable insert block is moved to the fixed insert block side and firmly clamped, the movable insert block is stopped at the clamping position, and the fixed insert block is moved to the fixed insert block. By returning to the reference position, the fixed insert block and the movable insert block The band saw blade is clamped while holding the gap between the fixed insert block and the movable insert block at an appropriate gap corresponding to the thickness of the band saw blade. Is.

Further, a band saw blade guide device for a band saw machine, comprising a back support member for supporting and guiding a back portion of the band saw blade, a fixed insert block and a movable insert block for sandwiching and guiding a body portion of the band saw blade, and the movable An insert block pressing means for pressing the insert block toward the fixed insert block is provided in the main body block of the band saw blade guide device, and the fixed insert block is finely moved from the reference position of the fixed insert block toward the movable insert block. A fixed insert block fine movement means that can be returned to the original reference position and a movable insert block stop for holding the movable insert block in a position where the band saw blade is firmly clamped by the fixed insert block and the movable insert block State holding means, And it is characterized in that it comprises a serial body block.

  Further, in the band saw blade guide apparatus, the fixed insert block fine movement means is constituted by a hydraulic actuator or a piezoelectric actuator.

  According to the present invention, the gap between the fixed insert block and the movable insert block provided in the band saw blade guide device can be maintained at an appropriate gap corresponding to the thickness of the body portion of the band saw blade with a simple configuration. It is something that can be done.

It is action explanatory drawing which showed notionally and schematically the structure of the band saw blade guide apparatus which concerns on embodiment of this invention. It is a conceptual and schematic explanatory drawing of the band saw blade guide apparatus according to the second embodiment. It is a conceptual and schematic explanatory drawing of the band saw blade guide apparatus which concerns on 3rd Embodiment.

  As conceptually and schematically shown in FIG. 1, a band saw blade guide device 1 according to an embodiment of the present invention includes a main body block 3, and the main body block 3 includes a general saddle type band saw machine, Similar to the band saw blade guide device in the horizontal band saw machine, an appropriate back support member 7 such as a roller or a block for supporting and guiding the back portion of the band saw blade 5 is provided. Also, the main body block 3 is integrally provided with a fixed-side insert arm 11 provided with a fixed insert block 9 for holding and guiding the body portion of the band saw blade 5 inside, and capable of fine movement in the direction of the band saw blade 5. Is provided.

  Further, the main body block 3 is provided with a movable side insert arm 13 that faces the fixed side insert arm 11, and inside the movable side insert arm 13, the fixed side block arm 9 faces the fixed insert block 9. A movable insert block 15 that sandwiches and guides the band saw blade 5 is provided so as to be movable in a direction approaching and separating from the fixed insert block 9. By the way, in this embodiment, the said movable side insert arm 13 is provided in the said main body block 3 integrally. However, the movable side insert arm 13 can be provided so as to be able to move (turn) in a direction approaching and moving away from the fixed side insert arm 11 and to be fixed in a close state.

  The movable insert block 15 is configured to be movable in a direction in which the movable insert block 15 is moved toward and away from the fixed insert block 9, and a distal end portion of a slide rod 17 that movably penetrates the movable insert arm 13 is the movable insert block 15. Are integrally connected to each other. And between the flange part 17F provided in the base end side of this slide rod 17 and the said movable side insert arm 13, the coil spring etc. which urge the said movable insert block 15 in the direction away from the fixed insert block 9 etc. An elastic member 19 such as is elastically mounted.

  Furthermore, the main body block 3 is provided with an insert block pressing means 21 for pressing the movable insert block 15 toward the fixed insert block 9. More specifically, a swing lever 27 is supported by a bracket 23 provided in the main body block 3 via a pivot 25 so as to be swingable (rotatable), and a tip end (lower end portion) of the swing lever 27 is supported. ) Is in contact with the flange portion 17F of the slide rod 17. In order to oscillate the oscillating lever 27, the main body block 3 is provided with a direct acting actuator 29 such as a fluid pressure cylinder. The tip of a reciprocating actuator 31 such as a piston rod that reciprocates in the direct acting actuator 29 abuts on a contacted member 33 provided on the base end side (upper end side) of the swing lever 27. It is.

  With the above configuration, when the linear actuator 29 is operated and the swing lever 27 is rotated clockwise in FIG. 1 by the reciprocating element 31, the slide rod 17 is moved by the lower end of the swing lever 27. It will be pressed against the urging force of the elastic member 19. Therefore, the movable insert block 15 is moved to the fixed insert block 9 side, and the body portion of the band saw blade 5 is firmly clamped by the fixed insert block 9 and the movable insert block 15.

  As described above, when the workpiece (not shown) is cut in a state where the band saw blade 5 is firmly clamped by the fixed insert block 9 and the movable insert block 15, both inserts can be suppressed. There is a problem that the friction between the blocks 9 and 15 and the band saw blade 5 is large and the wear of both the insert blocks 9 and 15 becomes severe.

  Therefore, in the present embodiment, means are provided for maintaining the gap between the fixed insert block 9 and the movable insert block 15 at an appropriate gap corresponding to the thickness of the body portion 5B of the band saw blade 5. ing. More specifically, the stationary insert arm 11 in the main body block 3 is provided with the stationary insert block 9 from the reference position of the stationary insert block 9 to the movable insert block 15 side, for example, about 0.01 mm. Fixed insert block fine movement means 35 for moving a small amount is provided.

  The fixed insert block fine movement means includes a hydraulic actuator, and the actuator body 37 includes a chamber 39 that receives a supply of working fluid (liquid) such as pressure oil from a pressure source (not shown). is there. The abutting wall portion 41 where the actuator body 37 abuts against the fixed insert block 9 is formed thin so as to be easily elastically deformed by the pressure of the working fluid supplied into the chamber 39.

  Furthermore, when the band saw blade 5 is firmly clamped (clamped) by the fixed insert block 9 and the movable insert block 15 in the main body block 3, the movable insert block 15 is stopped at the clamping position. A movable insert block stop state holding means 43 is provided for holding. In other words, in the present embodiment, as the movable insert block stop state holding means 43, the main body block 3 is provided with a lock cylinder 45 capable of locking the reciprocating element 31 in the actuator 29 in a non-moving state.

  The lock cylinder 45 has a configuration capable of tightening the reciprocating operation element 31 and is a known configuration. That is, a configuration is provided in which an annular cylinder body 45A includes a tapered collet 45B capable of tightening the reciprocating element 31, and an annular piston 45C for tightening the collet 45B. It is. Therefore, when the lock cylinder 45 is not in operation, the reciprocating element 31 in the actuator 29 can reciprocate in the left-right direction in FIG. However, when the lock cylinder 45 is operated, the reciprocating element 31 is fastened by the collet 45B, so that the reciprocating element 31 is fixed in a non-moving state and stopped.

  In the configuration as described above, when the gap (interval) between the fixed insert block 9 and the movable insert block 15 is wide open as shown in FIG. The band saw blade 5 is disposed between the two and the back portion of the band saw blade 5 is brought into contact with the back support member 7. Further, by supplying pressure oil into the chamber 39 in the fixed insert block fine movement means 35, the contact wall portion 41 is curved outwardly and is elastically deformed, thereby fixing the fixed insert block 9 to the fixed insert block 9 9 is moved from the reference position 9 to the movable insert block 15 side, for example, by about 0.01 mm (see FIG. 1B).

  After that, when the actuator 29 is operated and the swing lever 27 is rotated clockwise in FIG. 1B via the reciprocating element 31, the movable insert block 15 is fixed to the fixed insert block 9 via the slide rod 17. The band saw blade 5 is firmly clamped (clamped) between the fixed insert block 9 and the movable insert block 15 so as to be in close contact therewith. Thus, when the band saw blade 5 is firmly clamped and fixed so as to be in close contact with each other by the fixed insert block 9 and the movable insert block 15, the lock cylinder 45 which is the movable insert block stop state holding means 43. Is operated, the reciprocating element 31 is fixed in a non-moving state by the collet 45B provided in the lock cylinder 45.

  Therefore, the swing lever 27 and the movable insert block 15 are hindered from returning to their original positions, and the band saw blade 5 is clamped (clamped) between the fixed insert block 9 and the movable insert block 15. The position is stopped (see FIG. 1B). Thereafter, when the pressure oil is discharged from the chamber 39 in the fixed insert block fine movement means 35, the fixed insert block 9 returns to the original reference position.

  Therefore, the gap between the fixed insert block 9 and the movable insert block 15 is slightly widened, and the clamping force of the band saw blade 5 by the fixed insert block 9 and the movable insert block 15 is weakened. In other words, since the gap between the fixed insert block 9 and the movable insert block 15 is maintained at an appropriate gap suitable for the thickness of the band saw blade 5, the fixed insert block 9 and the movable insert block 15 Friction between the block 15 and the band saw blade 5 is reduced, and the band saw blade 5 is prevented from being greatly inclined between the fixed insert block 9 and the movable insert block 15, so that the cutting at the time of cutting the workpiece is prevented. It is suppressed.

  FIG. 2 shows a second embodiment according to the present invention, and components having the same functions as those of the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted. In the second embodiment, a fluid pressure cylinder 47 in which the piston rod 47P finely moves is adopted as the configuration of the fixed insert block fine movement means 35. That is, in the second embodiment, the fluid pressure cylinder 47 is operated and the fixed insert block 9 is finely moved from the reference position to the movable insert block 15 side by the piston rod 47P. Even in this configuration, the same effects as in the above-described embodiment can be obtained.

  FIG. 3 shows a third embodiment according to the present invention, and the same reference numerals are given to components having the same functions as those of the above-described embodiment, and redundant description is omitted. In the third embodiment, the fixed insert block fine movement means 35 is configured to employ a piezoelectric actuator 49. The piezoelectric actuator 49 is composed of a piezoelectric actuator in which a large number of piezoelectric elements are stacked and formed into a rod shape, and uses displacement in a direction parallel to the rod-shaped axis (stacking direction of piezoelectric elements). . A voltage applying means 51 is connected to the piezoelectric actuator 49. The voltage applying means 51 controls the amount of displacement of the piezoelectric actuator 49. For example, the voltage applying means 51 applies a voltage to all or a desired number of piezoelectric elements stacked by a dial operation or the like. Is a configuration that can be released freely.

  In the above configuration, the amount of fine movement of the fixed insert block 9 from the reference position to the movable insert block 15 side is adjusted by operating the voltage applying means 51 and selecting the number of piezoelectric elements to which the voltage is to be applied. It is something that can be done. Therefore, the gap between the fixed insert block 9 and the movable insert block 15 can be adjusted to a more appropriate gap than in the above-described embodiment.

  In addition, this invention is not restricted only to embodiment mentioned above, It can implement with another form by making an appropriate change. For example, the case where the lock cylinder 45 provided with the collet 45B capable of tightening the reciprocating element 31 as the movable insert block stop state holding means 43 is exemplified. However, the movable insert block stop state holding means 43 has a function capable of holding the movable insert block 15 in a stopped state at a position where the band saw blade 5 is firmly sandwiched between the fixed insert block 9 and the movable insert block 15. It ’s good.

  Therefore, the lock cylinder 45 can be replaced with a fluid pressure cylinder that presses and fixes the reciprocating element 31 with a piston rod. Further, in place of the configuration in which the reciprocating actuator 31 is fixed, a configuration in which the slide rod 17 is pressed and fixed with a piston rod of a fluid pressure cylinder may be employed. Furthermore, it is also possible to employ a configuration in which a wedge member is interposed between the main body block 3 and the swing lever 27 so as to be able to engage and disengage, and the swing lever 27 is fixed. That is, the present invention can be implemented with various modifications.

DESCRIPTION OF SYMBOLS 1 Band saw blade guide apparatus 3 Main body block 5 Band saw blade 9 Fixed insert block 15 Movable insert block 17 Slide rod 21 Insert block pressing means 25 Axis 27 Oscillating lever 29 Direct acting actuator 31 Reciprocating actuator 35 Fixed insert block fine moving means 37 Actuator Main body 39 Chamber 41 Abutting wall 43 Moving insert block stop state holding means 45 Lock cylinder 47 Fluid pressure cylinder 49 Piezoelectric actuator 51 Voltage applying means

Claims (3)

  A band saw blade holding method by a band saw blade guide device in a band saw machine, wherein the fixed insert block is fixed when the body portion of the band saw blade is clamped by a fixed insert block and a movable insert block provided in the band saw blade guide device. A state of fine movement from the reference position of the insert block to the movable insert block side is maintained, and the body portion of the band saw blade disposed between the fixed insert block and the movable insert block is used, and the movable insert block is used as the fixed insert block. The movable insert block is clamped by the fixed insert block and the movable insert block by moving to the side and firmly clamping the movable insert block, and then stopping the movable insert block at the pinching position and returning the fixed insert block to the reference position. Weaken the force or Click the band saw blade clamping method according to the band saw blade guiding apparatus characterized by sandwiching the band saw blade and held in a proper gap corresponding to the thickness of the band saw blade the gap between the movable insert block. A band saw blade guide device for a band saw machine, comprising a back support member for supporting and guiding a back portion of the band saw blade, a fixed insert block and a movable insert block for sandwiching and guiding a body portion of the band saw blade, and the movable insert block And an insert block pressing means for pressing the fixed insert block to the fixed insert block side in the main body block in the band saw blade guide device, and the fixed insert block can be finely moved from the reference position of the fixed insert block to the movable insert block side, and Fixed insert block fine movement means that can be returned to the original reference position, and movable insert block stop state holding for holding the movable insert block at a position where the band saw blade is firmly sandwiched between the fixed insert block and the movable insert block Means to the book Band saw blade guiding apparatus characterized in that it comprises a block.   The band saw blade guide apparatus according to claim 2, wherein the fixed insert block fine movement means is constituted by a hydraulic actuator or a piezoelectric actuator.

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