JP5385747B2 - Vertical band saw machine - Google Patents

Description

The present invention relates to a saddle type band saw machine capable of cutting, for example, a thick plate workpiece in the X and Y axis directions, and more specifically, relative to the band saw blade provided in the saddle type band saw machine. When the workpiece is moved back in the X-axis direction or the Y-axis direction and the cut piece is cut and separated from the workpiece and then the workpiece is returned to the original position relatively, the interference between the workpiece and the band saw blade is avoided. about the vertical band saw machine that can be.

  2. Description of the Related Art Conventionally, a workpiece is moved relative to a band saw blade in a saddle type band saw machine in the X-axis and Y-axis directions for cutting (see, for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 9-108938 JP 2001-150227 A

  As described in Patent Documents 1 and 2, the work held on the work table is cut by moving the work in the X-axis and Y-axis directions relative to the band saw blade in the saddle type band saw machine. ing. By the way, the vertical band saw machine is provided with a plurality of work clamps at appropriate intervals in the X-axis direction on a clamp carriage that is long in the X-axis direction, and one edge side in the Y-axis direction of a thick plate-like work with these work clamps The clamp carriage is relatively moved in the X-axis and Y-axis directions with respect to the band saw blade provided in the saddle-shaped band saw machine, and the workpiece is cut in the X-axis and Y-axis directions. Has also been developed.

  In the above configuration, when the clamp carriage is moved in the X-axis direction, the other end edge side of the workpiece in the Y-axis direction is cut and separated in the Y-axis direction, and then the clamp carriage is returned to the original position in the X-axis direction, The band saw blade returns relatively in the gap between the workpiece and the cut and cut piece. At this time, if the internal stress of the workpiece is released or the workpiece is bent, the workpiece and the cut piece will interfere with the band saw blade, and the saw blade may come off from the machine, improving the saw blade life. It is not desirable to plan.

  Therefore, immediately after the cutting piece is cut and separated from the workpiece (immediately after the band saw blade cuts and passes the workpiece relatively), the clamp carriage is moved in the Y-axis direction, and the cutting piece is moved along the cutting end surface of the workpiece. After slightly pushing in the Y-axis direction, the clamp carriage is returned to the Y-axis direction, so that the gap dimension in the Y-axis direction between the workpiece and the cutting piece can be expanded, eliminating the problems described above. can do.

  However, when the saw blade guide having a rotating body rotates, the clamp carriage is moved in the Y-axis direction, and the portion gripped by each work clamp is cut and separated in the X-axis direction, each work clamp Is in a state of being fixed to the clamp carriage, the gap dimension between the workpiece and the cut piece cannot be enlarged in the X-axis direction, and when returning the workpiece relative to the band saw blade in the Y-axis direction, There was a problem that the work and the band saw blade interfered.

The present invention has been made in view of the conventional problems as described above, and a workpiece clamping device for moving a workpiece relatively in the X-axis and Y-axis directions with respect to a band saw blade provided in a saddle type band saw machine. A vertical band saw machine equipped with a clamp carriage movable in the X-axis and Y-axis directions. The plurality of workpiece clamping devices can be adjusted in the X-axis direction and moved in the X-axis direction at the position adjustment position. Each of the work clamping devices includes a clamp base that can be adjusted in the X-axis direction with respect to the clamp carriage and can be fixed to the clamp carriage, and a clamp that is movable in the X-axis direction with respect to the clamp base. It is characterized by having a jaw .

  Further, in the saddle type band saw machine, the clamp jaw is supported by the clamp base so as to be vertically movable and urged upward and downward.

Further, Oite the vertical band saw, each workpiece clamping device is characterized in that it comprises a reciprocating means for moving the respective clamping jaw in the X-axis direction.

  According to the present invention, the workpiece clamping device is movable in the X-axis direction with respect to the clamp carriage at a position adjusted in the X-axis direction with respect to the clamp carriage. The cutting piece cut and separated in the X-axis direction can be moved in the X-axis direction. Therefore, the width dimension of the interval between the workpiece and the cut piece can be expanded in the X-axis direction, and the conventional problems as described above can be solved.

It is plane explanatory drawing which showed notionally and schematically the whole structure of the saddle type band saw machine which concerns on embodiment of this invention. It is side sectional explanatory drawing of a workpiece clamp apparatus. It is plane explanatory drawing which shows the structure of the principal part of a workpiece clamp apparatus.

  As shown conceptually and schematically in plan view in FIG. 1, a saddle-type band saw machine 1 according to an embodiment of the present invention has a saddle-type band saw machine (band saw) in which an endless band saw blade 3 runs in the vertical direction. Machine) 5. The portion of the band saw blade 3 in the band saw machine 3 that performs the cutting (cutting) action of the workpiece W sandwiches the band saw blade 3 so that the tooth tip can be directed in the X-axis direction or the Y-axis direction. The guide member for guiding is provided so as to be horizontally rotatable. In addition, since the band saw machine 5 provided with the band saw blade 3 so as to be horizontally rotatable is a known configuration as described in Patent Document 1, for example, a more detailed description of the band saw machine 5 is omitted.

  When the workpiece W is fed in the X-axis direction and the Y-axis direction with respect to the band saw 5 on one side (left side in FIG. 1) of the band saw 5 in the X-axis direction (left-right direction). A work table 7A is provided for movably supporting the table. On the other side of the band saw 5 in the X-axis direction (right side in FIG. 1), a work table 7B is provided that supports the cut piece WA cut and separated from the work W so as to be movable in the X and Y directions. ing.

  A long guide rail 9 in the X-axis direction is horizontally laid on one side (lower side in FIG. 1) of the band saw machine 5 in the Y-axis direction (front-rear direction). The shaft slider 11 is supported (supported) so as to be movable in the X-axis direction. The X-axis slider 11 is reciprocated in the X-axis direction by appropriate reciprocating operation means (not shown) such as a ball screw mechanism or a linear motor.

  A guide rail 13 in the Y-axis direction is provided on the X-axis slider 11, and a clamp carriage 15 that is long in the X-axis direction is supported on the guide rail 13 so as to be movable in the Y-axis direction. The reciprocating movement of the clamp carriage 15 in the Y-axis direction is performed by an appropriate reciprocating means (not shown) such as a ball screw mechanism or a linear motor. The clamp carriage 15 is provided with a plurality of workpiece clamping devices 17 that can clamp one edge of the thick plate-like workpiece W in the Y-axis direction so that the position can be adjusted in the X-axis direction. The workpiece clamp device 17 can move the workpiece W or a cut piece WB (not shown) cut and separated in the X-axis direction at the position adjustment position in the X-axis direction.

  As apparent from the above configuration, the X-axis slider 11 and the clamp carriage 15 move the workpiece W held by the workpiece clamping device 17 in the X and Y axis directions relative to the band saw blade 3. It constitutes a kind of work support table.

  As shown in FIGS. 1 and 2, the work clamp device 17 includes a clamp base 19 that can be adjusted in the X-axis direction with respect to the clamp carriage 15 and can be fixed to the clamp carriage 15 at a position adjustment position. . That is, as shown in FIG. 2, the clamp base 19 is provided with a vertically extending portion 19A and a horizontally extending portion 19B and is formed in an approximately L shape, and the vertically extending portion 19A The X-axis direction guide member 21 provided in the carriage 15 is supported so as to be movable in the X-axis direction. A horizontal extending portion 19B of the clamp base 19 protrudes so as to overlap the upper surface of the clamp carriage 15 so as to face the upper surface of the clamp carriage 15, and the horizontal extending portion 19B includes a clamp base. Fixing means 23 is provided for fixing 19 to the clamp carriage 15.

  That is, the upper surface of the clamp carriage 15 is provided with a plurality of positioning holes 25 at appropriate intervals in the X-axis direction, and the horizontal extending portion 19B has a lower end engaged with the positioning hole 25. A detachable shot pin 27 is provided to be movable up and down. Therefore, in a state where the shot pin 27 is detached from the positioning hole 25, the clamp base 19 is movable in the X-axis direction along the guide member 21, and the position of the clamp base 19 is adjusted in the X-axis direction. By engaging the shot pin 27 with the positioning hole 25 at the position, the clamp base 19 can be fixed in an immobile state.

  As the configuration of the fixing means 23, the clamp carriage 15 is provided with a ridge portion such as a rail long in the X-axis direction, and the clamp base 19 is provided with a clamp capable of clamping the ridge portion. A configuration is also possible. By configuring the fixing means 23 as described above, the clamp base 19 can be positioned and fixed in a stepless manner in the X-axis direction.

  A clamp jaw 31 that can clamp (grip) the workpiece W is supported on the clamp base 19 via a floating mechanism 29 so as to be vertically movable and movable in the X-axis direction. More specifically, the elevating member 35 is guided and supported by the vertical guide member 33 provided in the vertical extending portion 19A of the clamp base 19 so as to be movable up and down, and the X axis direction provided in the guide member 33 is supported. The clamp jaw 31 is guided and supported by the guide portion 37 so as to be movable in the X-axis direction.

  The floating mechanism 29 always supports the lifting member 35 so as to be movable up and down with respect to the clamp base 19 and has a function of absorbing vibration in the vertical direction. A protrusion 19P provided on the clamp base 19 is disposed between the upper and lower protrusions 39U and 39L, and the lifting member is provided between the protrusion 19P and the upper protrusion 39U. An elastic member 41U such as a coil spring that biases 35 upward is elastically mounted. An elastic member 41L that biases the elevating member 35 downward is provided between the projecting portion 19P and the lower projecting portion 39L.

  With the above-described configuration, the elevating member 35 has an upward urging force by the upper elastic member 41U, a downward urging force by the lower elastic member 41L, and the weight of the elevating member 35 and the like. It is supported in a neutral position in equilibrium. And it absorbs the vibration of the up-down direction at the time of moving the workpiece | work W to a X-axis and a Y-axis direction.

  In order to move the clamp jaw 31 along the guide member 37 in the X-axis direction, the elevating member 35 is provided with reciprocating operation means 43 (see FIG. 3) such as a fluid pressure cylinder. A reciprocating member 45 such as a piston rod provided in the actuating means 43 so as to freely reciprocate in the X-axis direction and the clamp jaw 31 are integrally connected. As shown in FIG. 2, the clamp jaw 31 is configured in a U shape including a lower jaw 31L that clamps the workpiece W from below, and an upper jaw 31U that faces the lower jaw 31L. The jaw 31U is provided with a clamp actuator 49 such as a fluid pressure cylinder provided with a pressing member 47 such as a piston rod that presses the upper surface of the workpiece W downward.

  With the above configuration, the workpiece W can be moved in the X-axis direction with respect to the clamp base 19 by operating the reciprocating means 43 in a state where the workpiece W is held (held) by the clamp jaw 31. Is.

  By moving the clamp carriage 15 in the Y-axis direction, the workpieces W held by the plurality of workpiece clamping devices 17 are moved in the same direction. Work support means 51 (see FIG. 1) is provided on the upper surface of the X-axis slider 11 to support the work W held by the plurality of work clamp devices 17 and moved in the Y-axis direction.

  More specifically, a guide member 53 that is long in the X-axis direction is provided on the upper surface of the X-axis slider 11, and a plurality of support bases 55 that are long in the Y-axis direction are provided on the guide member 53 in the X-axis direction. The position is adjustable. Each of the support bases 55 is provided with a plurality of vertical movement members 59 such as a fluid pressure cylinder provided with a work support member 57 such as a support roller for supporting the work W from below. Yes. The plurality of work support members 57 provided in each support base 55 are provided in a straight line in the X-axis direction.

  Each of the support bases 55 may be manually moved in the X-axis direction and positioned at a desired position, such as a fluid pressure cylinder for individually moving the support bases 55 in the X-axis direction. An actuator may be provided, and each support base 55 may be individually moved in the X-axis direction and positioned at a desired position in the operation range of each actuator.

  That is, when the work W is moved in the Y-axis direction with respect to the band saw blade 3 and the work W is cut and separated in the X-axis direction, the width dimension in the X-axis direction of the cut piece WB cut and separated in the X-axis direction is set. It is only necessary that the workpiece support member 57 can be positioned at a corresponding position. In other words, each work piece WB cut and separated in the X-axis direction can be supported by the work support member 57.

  When the clamp carriage 15 is moved in the Y-axis direction, each clamp device 17 is placed on each workpiece support member 57 in order to avoid interference between each clamp device 17 provided on the clamp carriage 15 and the workpiece support member 57. Each workpiece support member 57 is configured to descend when approaching in the axial direction. That is, a plurality of appropriate sensors 61A to 61D such as limit switches or photoelectric switches corresponding to the respective rows in which the work support members 57 are aligned in the X-axis direction are arranged on one side of the slider 11 in the X-axis direction. Aligned in the direction. On one side of the clamp carriage 15, a dog 63 for operating the sensors 61A to 61D is provided.

  With the above configuration, when the clamp device 17 holds the one end edge of the workpiece W in the Y-axis direction, the clamp carriage 15 is moved in the Y-axis direction, and the clamp device 17 provided in the clamp carriage 15 supports the workpiece. When the member 57 approaches the row in the X-axis direction, the sensors 61 </ b> A to 61 </ b> D corresponding to the row are operated by the dog 63. Therefore, the sensor actuated by the dog 63, for example, the vertical movement member 59 in the row corresponding to the sensor 61A moves downward, and the work support member 57 is lowered. Therefore, interference between the work clamp device 17 and the work support member 57 is avoided.

  When the dog 63 moves in the Y-axis direction to release the operation of the sensors 61A to 61D, the corresponding vertical movement member 59 is lifted and the workpiece W is supported again by the workpiece support member 57. It is.

  In the configuration as described above, after one end edge side of the workpiece W supported by the workpiece support means 51 in the Y-axis direction is held by the plurality of workpiece clamping devices 17, the clamp carriage 15 is moved along the guide rail 13 in the Y-axis direction. When the workpiece W moves in a direction approaching the work table 7A, the other end edge side of the workpiece W in the Y-axis direction protrudes on the work table 7A and is supported by the work table 7A.

  Therefore, after positioning the workpiece W with respect to the band saw blade 3, when the X-axis slider 11 is moved along the guide rail 9 in the X-axis direction, the other end edge side of the workpiece W in the Y-axis direction is moved by the band saw blade 3. Cut and separated in the Y-axis direction. At this time, since the cut piece WA cut and separated from the work W is placed on the other work table 7B, it is separated from the position close to the band saw blade 3 manually or by an appropriate carrying-out means. Moved to position. When the X-axis slider 11 is returned to the original position in the X-axis direction, the clamp carriage 15 is moved in the Y-axis direction (downward in FIG. 1) so that the work W is slightly separated from the band saw blade 3, and the band saw is moved. Interference between the blade 3 and the workpiece W is avoided.

  That is, when repeatedly moving the X-axis slider 11 in the X-axis direction and cutting and separating the workpiece W in the Y-axis direction, the interference between the band saw blade 3 and the workpiece W is avoided, and the X-axis slider 11 is moved. It can be returned to the original position in the X-axis direction.

  Next, the X-axis slider 11 is moved and positioned in the X-axis direction with the band-saw blade 3 turned 90 ° so that the tooth tip of the band-saw blade 3 is oriented in the Y-axis direction, and then the clamp carriage 15 is moved in the Y-axis direction. When the workpiece W is cut by moving in the direction close to the band saw blade 3 and the workpiece W is cut and separated in the X-axis direction, the cutting and separating position of the workpiece W in the X-axis direction Each workpiece clamping device 17 is previously positioned in the X-axis direction with respect to the clamp carriage 15. That is, each work clamp device 17 is positioned in the X-axis direction so that each work piece WB cut and separated in the X-axis direction is held by each work clamp device 17. Further, the support bases 55 are previously positioned at positions corresponding to the respective cut pieces WB so that the respective cut pieces WB cut and separated in the X-axis direction are supported by the respective work support members 57 in the work support means 51.

  Next, the X-axis slider 11 is moved in the X-axis direction, and the cutting position of the workpiece W is positioned with respect to the band saw blade 3. When the clamp carriage 15 is moved in the Y-axis direction close to the band saw blade 3, the workpiece W is cut in the Y-axis direction. As described above, when the clamp carriage 15 is moved in the Y-axis direction and the workpiece clamping device 17 comes close to the workpiece support member 57, the sensors 61A to 61D corresponding to the rows of the workpiece support members 57 in the X-axis direction are activated. As described above, the work support member 57 is lowered. Further, the other end edge side of the work W is moved and supported on the work tables 7A and 7B.

  Then, when the workpiece W is gradually cut in the Y-axis direction and the band saw blade 3 cuts one end edge side of the workpiece W in the Y-axis direction, the workpiece W is cut and separated in the X-axis direction. After the workpiece W is cut and separated in the X-axis direction as described above, the reciprocating means 43 is operated to hold the clamp jaw 31 holding the cut piece WB cut and separated in the X-axis direction in the right direction ( When moving in the X-axis direction and away from the workpiece W and the band saw blade 3), the cutting piece WB is separated from the band saw blade 3 in the X-axis direction. Then, when the X-axis slider 11 is slightly moved in the left direction in FIG. 3 (the direction in which the workpiece W is separated from the band saw blade 3) to the extent that the cut piece WB does not contact the band saw blade 3 in FIG. The workpiece W and the cut piece WB are both separated from the band saw blade 3.

  Therefore, as described above, when the workpiece W and the cutting piece WB are separated from the band saw blade 3, the clamp carriage 15 is returned to the original position in the Y-axis direction. Can be returned without interference and can solve the conventional problems as described above.

  As understood from the above description, after the clamp carriage 15 and the workpiece W are moved in the Y-axis direction with respect to the band saw blade 3 to cut the workpiece W in the Y-axis direction, the clamp carriage 15 and the workpiece W are then cut. When the workpiece is returned to the original position in the Y-axis direction, at least one of the workpiece W or the cut piece cut and separated from the workpiece W is moved in the X-axis direction, and the gap generated when the workpiece is cut by the band saw blade 3 Therefore, the workpiece W can be returned to the original position relative to the band saw blade 3 without interfering with the workpiece W, the cutting piece WB, and the band saw blade. it can.

1 Band type band saw machine 3 Band saw blade 5 Band saw machine (band saw machine)
7A, 7B Work table 9 Guide rail 11 X-axis slider 13 Guide rail 15 Clamp carriage 17 Work clamp device 19 Clamp base 23 Fixing means 25 Positioning hole 27 Shot pin 29 Floating mechanism 31 Clamp jaw 35 Elevating member 41U, 41L Elastic member 43 Reciprocating Actuating means 45 Reciprocating action member 47 Work pressing member 49 Clamping actuator 51 Work support means

Claims (3)

A vertical band saw machine equipped with a workpiece clamping device for moving a workpiece in the X-axis and Y-axis directions relative to the band-saw blade provided in the vertical band-saw machine, in the X-axis and Y-axis directions X a movable clamp carriage comprises movably plurality of the workpiece clamping device in the X-axis direction at a position adjustable and position adjustment position to the X-axis direction, each of the workpiece clamping device to the clamp carriage to A saddle-type band saw machine comprising: a clamp base that can be adjusted in the axial direction and fixed to the clamp carriage; and a clamp jaw that is movable in the X-axis direction with respect to the clamp base . The saddle type band saw machine according to claim 1, wherein the clamp jaw is supported by the clamp base so as to be vertically movable and urged upward and downward. 3. A vertical band saw machine according to claim 1 or 2, wherein each work clamping device includes reciprocating means for moving each clamp jaw in the X-axis direction. .

Images