WO2013099470A1 - 帯鋸盤及び帯鋸盤の制御方法 - Google Patents
帯鋸盤及び帯鋸盤の制御方法 Download PDFInfo
- Publication number
- WO2013099470A1 WO2013099470A1 PCT/JP2012/079895 JP2012079895W WO2013099470A1 WO 2013099470 A1 WO2013099470 A1 WO 2013099470A1 JP 2012079895 W JP2012079895 W JP 2012079895W WO 2013099470 A1 WO2013099470 A1 WO 2013099470A1
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- WIPO (PCT)
- Prior art keywords
- product
- band saw
- work material
- vise
- cutting
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
- B23D55/04—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for feeding or clamping work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D53/00—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting
- B23D53/04—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting with the wheels carrying the strap mounted shiftably or swingingly, i.e. during sawing, other than merely for adjustment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
- B23D55/04—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for feeding or clamping work
- B23D55/043—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for feeding or clamping work for conveying work to the sawing machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0448—With subsequent handling [i.e., of product]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/202—With product handling means
- Y10T83/2092—Means to move, guide, or permit free fall or flight of product
- Y10T83/2183—Product mover including gripper means
Definitions
- the present invention relates to a band saw machine for cutting a work material using a band saw blade and a method for controlling the band saw machine.
- a band saw machine for cutting a work material such as a columnar metal by rotating a band saw blade hung around a pair of wheels is widely used.
- the band saw blade is partially twisted to provide a twisted portion, the work piece is cut by the saw blade with the tooth tip facing the work material, and the band saw blade that rotates and rotates The opposing part which opposes a twist part and a wheel is made not to hit a work material. If it does in this way, the product which is longer than the diameter of a wheel can be obtained, without giving restrictions to the length which can be cut of a work material.
- a product obtained by cutting a work material with a band saw will be referred to as a product.
- Patent Document 1 describes a band saw machine in which a pair of wheels are arranged so that the surface of the wheel is substantially vertical, the band saw blade is twisted by approximately 90 °, and the tooth tip is directed downward.
- the band saw blades that are hung around a pair of wheels are subjected to tensile stress and bending stress because the saw blades are tensioned between the wheels and the saw blades are in contact with the outer peripheral curved surface of the wheels.
- a band saw blade provided with a twisted portion is subjected to torsional stress in addition to tensile stress and bending stress.
- the band saw blade provided with the twist portion is rotated, the resultant force of the tensile stress, the bending stress, and the torsional stress repeatedly acts. Then, the body portion of the band saw blade may break due to metal fatigue due to long-time use of the band saw blade.
- the rupture of the trunk is a particularly serious problem in the case of a diamond band saw blade or a carbide band saw blade that requires high-speed rotation. This is because the body part may break and the band saw blade needs to be replaced before the life of the tooth tip, which is an expensive diamond or carbide tip, compared to the bimetal band saw blade.
- the band saw blade is not twisted and a so-called band saw blade with zero twist is formed. If the band saw blade is not twisted, the breakage of the body portion can be greatly reduced, and the life of the band saw blade can be extended.
- a band saw with no band saw blade twist is useful for certain applications where the cutable length of the work piece may be short.
- the present invention has been made in view of such problems, and an object of the present invention is to provide a band saw machine and a band saw machine control method that can reduce tact time loss in a product manufacturing cycle even when the twist of the band saw blade is zero. .
- a feed vise for positioning the work material carried from the upstream side to the downstream side on the pass line, and a pair of wheels.
- a band saw blade that rotates in an untwisted state, descends from above the pass line, and cuts the work material positioned by the feed vise with a length less than the diameter of the wheel; and A vise jaw that clamps the work material, and clamps the work material downstream from the cutting position of the work material before the completion of cutting to cut the work material by the band saw blade, and maintains the clamp even after the work is completed.
- a band saw machine comprising: a product carrying vise that descends while clamping the product obtained by cutting the work material and carries the product downward from the pass line.
- a product carry-out frame having an inclined surface inclined so as to descend from the upstream side to the downstream side, and to carry out the product carry-out vice clamping the product along the inclined surface.
- a vertical movement mechanism that vertically lowers the product carry-out vice that clamps the product, and a horizontal movement that horizontally moves the product carry-out vice lowered by the vertical movement mechanism to the downstream side. It is preferable to provide a mechanism.
- the product carry-out vise has a support base for supporting the work material from below.
- the upper end portion of the vice jaw does not interfere with the band saw blade when the product carrying vise is carried out in a state where the band saw blade is positioned at the descending end where the cutting of the work material is completed. It is preferable that it is comprised.
- the product carry-out vice is lowered at a timing at which the upper end portion of the product does not interfere with the band saw blade.
- the band saw machine includes a product recovery device that recovers the product carried out by the product carry-out vise.
- the band saw blade that rotates around and is not twisted is lowered from above the pass line, and the work material positioned in the positioning step is cut to a length less than the diameter of the wheel.
- a band saw machine control comprising: a step of lowering a product obtained by cutting a cutting material while being clamped by the product carry-out vise, and carrying the product downward from the pass line. The law is provided.
- the unloading step unloads the product unloading vise clamping the product along an inclined surface inclined so as to descend from the upstream side to the downstream side.
- the unloading step includes a vertical movement step of vertically lowering the product unloading vise clamping the product, and the downstream of the product unloading vice lowered in the vertical movement step. It is preferable to include a horizontal movement step of moving horizontally in the horizontal direction.
- the positioning step, the cutting step, the clamping step, the unloading step, and the product recovery step are sequentially repeated, and the workpiece is removed in the next clamping step.
- the product carrying-out vise after collecting the product in the product collecting step is clamped to the work material positioned by the next positioning step before the completion of cutting by the next cutting step. It is preferable to further include a step of returning to the position.
- the returning step supports the work material from below by a support stand included in the product carry-out vise.
- the above-described band saw machine control method further includes a retracting step of retracting the band saw blade above the pass line after completion of the cutting in the cutting step, and the unloading step retracts the band saw blade in the retracting step.
- the product carry-out vise clamping the product is lowered at a timing at which the upper end portion of the product does not interfere with the band saw blade.
- the band saw machine control method further includes a retreat preparation step of moving the work material upstream by the feed vise and moving the product downstream by the product carry-out vice before the retreat step. It is preferable.
- control method for the band saw machine further includes a product recovery step for recovering the product carried out in the carry-out step.
- the band saw machine and the band saw machine control method of the present invention it is possible to reduce the tact time loss in the product manufacturing cycle even if the band saw blade has no twist.
- FIG. 1 is a side view showing a state before cutting a work material in the first embodiment.
- FIG. 2 is a partial plan view showing the positional relationship between the work material, the drive wheel for rotating the band saw blade, and the driven wheel in each embodiment.
- FIG. 3 is a block diagram showing a functional configuration for operating each unit in the first embodiment.
- FIG. 4 is a side view showing a state in which cutting of the work material is completed in the first embodiment.
- FIG. 5 is a side view showing a state in which the product is carried out in the first embodiment.
- FIG. 6 is a partial side view for explaining the relationship between the vertical position of the band saw blade and the product carry-out timing in the first embodiment.
- FIG. 7 is a side view showing a state in which the work material that has been repositioned by returning the product carry-out vice in the first embodiment is being cut.
- FIG. 8 is a side view showing a modification of the first embodiment.
- FIG. 9 is a diagram for explaining the effect of the first embodiment.
- FIG. 10 is a side view showing a state before the work material is cut in the second embodiment.
- FIG. 11 is a block diagram illustrating a functional configuration for operating each unit in the second embodiment.
- FIG. 12 is a side view showing a state in which cutting of the work material is completed in the second embodiment.
- FIG. 13 is a side view showing a state where the product carry-out vice is vertically moved in the second embodiment.
- FIG. 14 is a side view showing a state where the product carry-out vise is horizontally moved in the second embodiment.
- FIG. 15 is a side view showing a state in which the work material that has been repositioned by returning the product carry-out vice in the second embodiment is being cut.
- FIG. 16 is a side view showing a state before cutting the work material and a state in which cutting is completed in the third embodiment.
- FIG. 17 is a side view illustrating a state in which the product carry-out vise is moved vertically and horizontally in the third embodiment.
- a main body frame 10 includes a feed vise 11 for feeding a work material W in the left direction (downstream direction) in FIG. 1, a main body vise 12 for fixing the work material W, and a free roller table 13.
- the feed vise 11 has a feed vise jaw 11j for clamping the work material W and a guide 11g.
- the free roller table 13 has a plurality of rollers 13r.
- the guide 11g is engaged with the rail 14, and the feed vise 11 is movable in the left-right direction along the rail 14.
- the main body vise 12 has a main body vise jaw 12j for clamping the work material W.
- the main body vise 12 is disposed at a position immediately before the cutting position that is upstream of the cutting direction of the work material W in the feed direction with respect to the cutting position of the work material W indicated by the alternate long and short dash line.
- the product carry-out frame 20 is arranged on the downstream side in the feed direction of the work material W of the main body frame 10.
- the product carry-out frame 20 includes a product carry-out vice 21 for carrying out the product P obtained by cutting the work material W.
- the tip side is the product P from the cutting position indicated by the alternate long and short dash line in the work material W.
- the product carry-out vice 21 includes a support base 21s for supporting the work material W from below, a product carry-out vise jaw 21j for clamping the work material W (product P), a guide 21g, and a plurality of rollers 21r. Have.
- the roller 21r is a free roller or a driving roller. In a state before the work material W is cut, the product carry-out vice 21 is located immediately after the cutting position which is downstream of the cutting position.
- the upper surface of the product carry-out frame 20 is an inclined surface inclined so as to descend from the right direction to the left direction in FIG.
- a rail 22 is attached to the inclined surface.
- the guide 21 g is engaged with the rail 22, and the product carry-out vice 21 is movable in the left-right direction along the rail 22. That is, the product carry-out vice 21 is lowered or raised along the rail 22.
- a saw blade housing 30 is disposed above the work material W. As shown in FIG. 2, the saw blade housing 30 includes a drive wheel 31a and a driven wheel 31b, and a band saw blade 32 wound around the drive wheel 31a and the driven wheel 31b. The band saw blade 32 rotates in the direction of the arrow by driving the drive wheel 31a.
- FIG. 1 is a side view of the band saw machine according to the first embodiment viewed from the side surface in the feed direction of the work material W, and a part of the saw blade housing 30 and the like are indicated by fantasy lines.
- the tooth tip 32t of the band saw blade 32 faces the work material W side.
- the band saw blade 32 is not twisted and has zero twist.
- the guide 30g is engaged with the rail 33, and the saw blade housing 30 is movable in the vertical direction along the rail 33. When the saw blade housing 30 is lowered while the band saw blade 32 is rotated, the work W is cut at the tooth tip 32t of the band saw blade 32 on the side traveling from the top to the bottom of FIG.
- the maximum length Lmax of the workable material W that can be cut is less than the diameters of the drive wheel 31a and the driven wheel 31b, and is a length obtained by subtracting some margin from the length of the diameter.
- the minimum length Lmin of the workable material W that can be cut is, for example, the thickness of the product P that can stand on its own.
- the product P may have a thickness that cannot stand by itself. In this case, the minimum length Lmin can be shortened to the limit.
- the feed vise jaw 11j, the main body vise jaw 12j, and the product carry-out vise jaw 21j are fixed vise jaws 11j1, 12j1, 21j1 whose positions are fixed, and broken lines when the work material W is clamped. It consists of moving vise jaws 11j2, 12j2, and 21j2 that move from the position shown to hold the work material W.
- a product recovery device 40 is disposed downstream of the product carry-out frame 20.
- the product recovery apparatus 40 shown in FIG. 1 includes a product recovery conveyor 42 disposed on a frame 41 as an example.
- the product collection conveyor 42 has a plurality of rollers 42r.
- the plurality of rollers 42r are driven by a drive unit not shown here. Or you may make it incline so that it may descend
- the feed vise 11 is driven by a feed vise driving unit 110 provided in the main body frame 10.
- the feed vise drive unit 110 includes a vise jaw drive unit 110a that drives the feed vise jaw 11j to clamp or unclamp the work material W, and an advance / retreat drive unit 110b that advances or retracts the feed vise 11.
- the main body vise 12 is driven by a main body vise driving unit 120 provided in the main body frame 10.
- the main body vise driving unit 120 drives the main body vise jaw 12j so as to clamp or unclamp the workpiece W.
- the product carry-out vice 21 is driven by a product carry-out vise drive unit 210 provided in the product carry-out frame 20.
- the product carry-out vise drive section 210 includes a vise jaw drive section 210a that drives the product carry-out vise jaw 21j to clamp or unclamp the work material W, and a lift drive section 210b that raises or lowers the product carry-out vise 21.
- the saw blade housing 30 is driven by a saw blade driving unit 300 provided in the saw blade housing 30.
- the saw blade drive unit 300 includes a wheel drive unit 300a that drives the drive wheel 31a to rotate the band saw blade 32 and a lift drive unit 300b that moves the saw blade housing 30 up and down.
- the product collection device 40 is driven by a product collection device driving unit 400 provided in the product collection device 40.
- the product collection device driving unit 400 rotates the roller 42 r of the product collection conveyor 42.
- control unit 100 These feed vise drive unit 110, main body vise drive unit 120, product carry-out vise drive unit 210, saw blade drive unit 300, and product recovery device drive unit 400 are controlled by the control unit 100.
- the control unit 100 may be provided at an arbitrary place.
- the control unit 100 can be configured by a microcomputer, for example.
- the microcomputer includes a storage unit that stores a control program for controlling the operation of each drive unit, and a microprocessor that controls the drive unit by executing the control program.
- the control unit 100 may be configured by a plurality of microcomputers.
- a procedure (each process) described below is executed by each drive unit based on control by the control unit 100. That is, the control program provided in the control unit 100 causes the computer mounted on the band saw machine to execute the following steps.
- FIG. 1 shows a state where the workpiece W is positioned as described above, and the workpiece W is clamped by the feed vise jaw 11j, the main body vise jaw 12j, and the product carry-out vise jaw 21j.
- FIG. 4 shows a state in which cutting of the work material W has been completed. As described above, the work material W is cut with a length less than the diameter of the drive wheel 31a and the driven wheel 31b.
- FIG. 5 is merely an example of the mutual timing of the unloading and collecting step of the product P and the repositioning step of the work material W.
- the new positioning of the work material W is completed according to various conditions such as the length of the product carry-out frame 20, the descending speed of the product carry-out vise 21, the feed speed of the work material W by the feed vise 11, the length of the product P, and the like.
- the product P may be collected before, and the product P may be collected after the positioning is completed.
- FIG. 6 illustrates only the product carry-out vice 21, the band saw blade 32, and the work material W (product P) that move on the product carry-out frame 20.
- FIG. 6 shows an example where the length of the product P is relatively short.
- the upper end portion of the product carry-out vise jaw 21j when the product carry-out vice 21 is moved from the lift end to the drop end with the band saw blade 32 positioned at the drop end, the upper end portion of the product carry-out vise jaw 21j. Is preferably set to an inclination angle ⁇ of the inclined surface that does not interfere with the band saw blade 32.
- the product carry-out vice 21 moves from the lower end to the upper end without returning the product P and returns to the original position. Therefore, even if the band saw blade 32 is positioned at the descending end, the inclination angle ⁇ is set so that the upper end portion of the product carry-out vise jaw 21j does not interfere with the band saw blade 32.
- the product carry-out vice 21 when the product carry-out vice 21 is moved from the ascending end to the descending end with the band saw blade 32 positioned at the descending end, the upper end portion of the product P becomes the band saw. It is preferable to set the inclination angle ⁇ of the inclined surface so as not to interfere with the blade 32.
- the descent of the product carry-out vice 21 can be started even before the band saw blade 32 located at the lower end starts to retract. Therefore, in the first embodiment, depending on the length L of the product P, the descent of the product carry-out vice 21 can be started before the band saw blade 32 starts to retract or simultaneously with the start of the retract.
- the lowering of the product carry-out vice 21 can be started during the retraction of the band saw blade 32.
- the length L of the product P is longer than a predetermined length, before the retracting of the band saw blade 32 is started, simultaneously with the start of the retracting, or after the retracting is started. Therefore, the descent of the product carry-out vice 21 can be started before the evacuation is completed.
- the control unit 100 In the control unit 100, the inclination angle ⁇ and the positional information of the tooth tip 32t when the band saw blade 32 is located at the descending end, in particular, the workpiece facing the tooth tip 32t on the side of cutting the workpiece W. Position information of the tooth tip 32t downstream of the feed direction of W is given in advance. Then, if the height h of the work material W and the length L of the product P are input to the control unit 100, the control unit 100 causes the product carry-out vice 21 to descend at any timing when the band saw blade 32 is retracted. It is possible to calculate and determine whether it can be started. A table in which the start timing of the descent is set in advance corresponding to the height h of the work material W and the length L of the product P may be stored, and the timing may be obtained from the table.
- the product carry-out vice 21 after completion of the retraction of the band saw blade 32 which is the basic operation of the first embodiment. Should be lowered. Further, even when the product carry-out vice 21 can be lowered before the band saw blade 32 is retracted, the product carry-out vice 21 may be lowered after the band saw blade 32 is retracted.
- the cutting process of the work material W which is the process H described later, can be started. Even if the work material W is repositioned in the repositioning process of the work material W in the above-described process F and the work material W is clamped by the feed vise 11 and the main body vise 12, the product carrying vise 21 is not yet returned. Cutting of the work material W by the band saw blade 32 is started. Since the support base 21s may be brought into contact with the work material W while the work material W is being cut, the force generated at the time of collision with the work material W of the support base 21s is not affected. It is preferable that the support base 21s has a floating structure so as to reduce the height.
- the product carry-out vise jaw 21j may clamp the workpiece W during cutting, it is preferable that the clamping force by the product carry-out vise jaw 21j is smaller than the clamping force by the main body vise jaw 12j. If the clamping force by the product carry-out vise jaw 21j is made smaller than the clamping force by the main body vise jaw 12j, it is possible to eliminate the possibility that the workpiece W being cut moves and the tooth tip 32t is damaged. It is sufficient for the product carry-out vice 21 to clamp the work material W with a force necessary for lowering the cut product P to the lower end and carrying it out.
- FIG. 7 shows a state where the product carry-out vice 21 is returned by the return step of the product carry-out vice 21 in the process G, and the cutting of the work material W by the band saw blade 32 progresses partway.
- the tooth tip 32t of the band saw blade 32 reaches the lower end of the work material W, the cutting of the work material W is completed.
- the above-described process C to process H are repeated, and the products P are sequentially manufactured.
- FIG. 8 shows a modified example in which the product collection device 40 ′ using the product collection arm 43 is used instead of the product collection device 40 using the product collection conveyor 42.
- the product collection arm 43 is a so-called arm type robot.
- the product collection arm 43 has a collection vise 44.
- FIG. 8 shows an example in which the length of the product P is relatively short. The collection vise 44 clamps the product P in the thickness direction, moves the product collection arm 43, and unclamps it at a predetermined position to collect the product P.
- the method of collecting the product P is arbitrary.
- FIG. 9A shows the cutting / retraction of the work material W by the band saw blade 32 and the positioning of the work material W by the feed vise 11 when the product carrying-out vice 21 is lowered after the retraction of the band saw blade 32 is completed.
- FIG. 4 schematically shows the operation timings of the product unloading / returning by the product unloading device 21 and the recovery by the product recovery device 40 (40 ′).
- the band saw blade 32 starts to descend at time t1, and completes cutting at time t2.
- the band saw blade 32 starts to evacuate immediately and prepares for evacuation, and completes evacuation at time t3. Since the positioning of the work material W is possible when the retraction is completed, the feed vise 11 immediately starts the positioning operation of the work material W, and the positioning is completed at time t4.
- the product carry-out vice 21 that clamps the product P starts to descend at time t3 when the evacuation is completed, and reaches the descending end at time t41. From time t3 to time t41 is the carry-out operation of the product P.
- the time t41 is before, after, or at the same time as the time t4.
- the product carry-out vice 21 starts to rise at time t41, reaches the rising end at time t42, and returns to the original position.
- the band saw blade 32 starts to descend at time t4 when positioning is completed, and completes cutting at time t5.
- the product carry-out vice 21 clamps the work material W before the completion of cutting at time t5.
- the time t42 may be before or simultaneously with the time t4, and the product carry-out vice 21 may clamp the work material W before the completion of cutting from the time t4 to the time t5.
- the band saw blade 32 completes the retraction at time t6, and thereafter repeats the same operation. After time t6, the sending vise 11, the product carry-out vice 21, and the product collection device 40 (40 ') repeat the same operation.
- the unloading and returning operations of the product unloading vice 21 are performed by cutting and retracting the workpiece W by the band saw blade 32 and the workpiece by the feed vise 11. Since the W positioning operation is performed in parallel, the tact time loss can be substantially eliminated.
- FIG. 9B shows the cutting / retraction of the work material W by the band saw blade 32 and the positioning of the work material W by the feed vise 11 when the product carry-out vice 21 is lowered before the retraction of the band saw blade 32 is completed.
- the timings of the operation of carrying out and returning the product by the product carry-out vice 21 and the collection by the product collection device 40 (40 ′) are schematically shown.
- the cutting / retraction of the work material W by the band saw blade 32 and the positioning operation of the work material W by the feed vise 11 are the same as in FIG.
- the product carry-out vice 21 can start descending when the upper end of the product P satisfies the condition that the upper end portion of the product P does not interfere with the band saw blade 32 when it descends after completion of cutting at time t2.
- the product carry-out vice 21 starts to descend at time t21 and reaches the descending end at time t31. From time t21 to time t31 is the carry-out operation of the product P. As described above, time t21 may coincide with time t2.
- the product collection device 40 (40 ') collects the product P over a predetermined time from the time t31. In parallel with the collection of the product P, the product carry-out vice 21 starts to rise at time t31, reaches the rising end at time t43, and returns to the original position.
- the tact time loss can be substantially eliminated according to the first embodiment.
- the band saw blade 32 starts to descend at time t11, completes cutting at time t12, and completes retraction at time t13.
- the product P can be unloaded only after the band saw blade 32 is retracted. Further, the work material W for the next cutting cannot be positioned unless the product P is unloaded.
- the product carry-out device starts carrying out the product P at time t13 and completes carry-out at time t131. Although not particularly illustrated, the product P is collected after time t131.
- the feeding device 11 starts positioning operation at time t131, and positioning is completed at time t14.
- the band saw blade 32 starts to descend at time t14, completes cutting at time t15, and completes retraction at time t16. Thereafter, the same operation is repeated. After time t16, the product carry-out device and the feed vise 11 repeat the same operation. In the case of FIG. 9C, there is a tact time loss. According to the first embodiment, there is an effect that more products P can be manufactured at the same time.
- the second embodiment will be described with reference to FIGS. 10 to 15, the same parts as those of the first embodiment described in FIGS. 1 to 9 are denoted by the same reference numerals, and the description thereof will be omitted as appropriate.
- an elevating device 50 and a product carry-out device 51 are provided in place of the product carry-out frame 20 and the product carry-out device 21 in the first embodiment, and a product collection device 60 is provided in place of the product collection device 40. is there.
- the product carry-out vice 51 is placed on the lifting device 50.
- a guide 50g is provided at the end of the lifting device 50 on the main body frame 10 side.
- the guide 50g is engaged with a rail 52 extending in the vertical direction, and the lifting device 50 is movable along the rail 52 in the vertical direction (vertical direction).
- the product carry-out vice 51 moves in the vertical direction.
- a rail 53 extending in the horizontal direction is attached to the upper surface of the lifting device 50.
- the product carry-out vise 51 includes a support base 51s that supports the work material W from below, a product carry-out vise jaw 51j for clamping the work material W (product P), a guide 51g, and a plurality of rollers 51r.
- the roller 51r is a free roller or a driving roller.
- the guide 51g is engaged with the rail 53, and the product carry-out vise 51 is movable along the rail 53 in the horizontal direction (left-right direction).
- it has the vertical movement mechanism which raises / lowers the product carrying-out vice 51 by the raising / lowering apparatus 50, and the horizontal movement mechanism which moves the product carrying-out vice 51 to a horizontal direction.
- the product carry-out vise 51 can perform vertical movement and horizontal movement independently of each other.
- a product recovery device 60 is disposed downstream of the lifting device 50.
- the product collection device 60 has the same configuration as that of the product collection device 40, and includes a product collection conveyor 62 disposed on the frame 61.
- the product collection conveyor 42 has a plurality of rollers 62r.
- the product recovery device 60 may have a configuration using a product recovery arm, similar to the product recovery device 40 '.
- the functional configuration of the band saw machine of the second embodiment is as shown in FIG.
- the product carry-out vice 51 is driven by a product carry-out vise drive unit 510 provided at a predetermined position.
- the product carry-out vise drive unit 510 drives the product carry-out vise jaw 51j to clamp or unclamp the workpiece W, and moves the product carry-out vice 51 in the vertical direction by the lifting device 50 to move up and down.
- the product recovery device 60 is driven by a product recovery device drive unit 600 provided in the product recovery device 60.
- the feed vise drive unit 110, the main body vise drive unit 120, the product carry-out vise drive unit 510, the saw blade drive unit 300, and the product recovery device drive unit 600 are controlled by the control unit 100.
- Steps A and B are the same as in the first embodiment.
- Process F is the same as in the first embodiment.
- FIG. 15 shows a state where the product carry-out vice 51 is returned by the return process of the product carry-out vice 51 in the process G, and the cutting of the work material W by the band saw blade 32 progresses halfway.
- the cutting process of the work material W as the process H can be started.
- the above-described process C to process H are repeated, and the products P are sequentially manufactured.
- the tact time loss can be substantially eliminated as in the first embodiment.
- the product carry-out vice 51 that clamps the product P can start descending immediately after completion of cutting. Regardless of the length L of the product P, the product carry-out vice 51 can start descending at time t2 in FIG.
- FIGS. 16 and 17 substantially the same parts as those of the second embodiment described with reference to FIGS. 10 to 15 are denoted by the same reference numerals, and the description thereof is omitted as appropriate.
- the product carry-out device 70 includes a product carry-out arm 72, a vertical guide plate 73, a horizontal guide plate 76, and a guide arm 77.
- the product carry-out arm 72 has a horizontal portion 72a extending in the horizontal direction and an inclined portion 72b extending obliquely upward from the horizontal portion 72a, and has a product carry-out vise 71 at the tip of the inclined portion 72b. In FIG. 16A, the product carry-out vise 71 clamps the positioned work material W.
- the guide plate 73 has rails 74, and the rails 74 are engaged with two pairs of guides 75 arranged in the vertical direction.
- the product carry-out arm 72 is attached to the lower end portion of the guide plate 73.
- the product carry-out arm 72 and the guide plate 73 are moved downward from (a) and (b) of FIG. That is, the product carry-out device 70 has a vertical movement mechanism that moves the product carry-out arm 72 in the vertical direction.
- the product carry-out arm 72 is lowered as shown in FIG. 17A while the product P is clamped by the product carry-out vise 71.
- the guide arm 77 has a rail 78, and the rail 78 is engaged with the guide 79 in the horizontal direction.
- the guide 79 is attached to the guide plate 76.
- the product carry-out arm 72 and the guide plate 73 move in the horizontal direction. That is, the product carry-out device 70 has a horizontal movement mechanism that moves the product carry-out arm 72 in the horizontal direction.
- the product carry-out arm 72 is lowered, the product carry-out arm 72 is moved downstream as shown in FIG.
- the product carry-out vice 71 When the product carry-out arm 72 is moved to the downstream side, the product carry-out vice 71 unclamps the product P, and further conveys it with a product collection conveyor (not shown) and collects it with a product collection box or the like. Thereafter, the product carry-out arm 72 is moved to the upstream side and raised to return the product carry-out vice 71 to the pass line. Then, similarly to FIG. 16A, the product carry-out vise 71 clamps the positioned workpiece W, and repeats the operations of FIG. 16B, FIG. 17A, and FIG. Also in the third embodiment, the tact time loss can be substantially eliminated.
- the band saw blade 32 since the band saw blade 32 has no twist, the breakage of the body portion can be greatly reduced, and the life of the band saw blade can be extended. Despite zero twist, there is almost no tact time loss. Therefore, the band saw machines according to the first to third embodiments have the same or better performance as compared with a general band saw machine having no twist.
- the present invention can be used in a band saw machine that cuts a work material using a band saw blade.
Abstract
Description
まず、第1実施形態の帯鋸盤の全体構成について説明する。図1において、本体フレーム10は、被削材Wを図1の左方向(下流方向)に送るための送りバイス11と、被削材Wを固定するための本体バイス12と、フリーローラテーブル13とを備える。送りバイス11は被削材Wをクランプするための送りバイスジョー11jと、ガイド11gとを有する。フリーローラテーブル13は複数のローラ13rを有する。ガイド11gはレール14と係合しており、送りバイス11はレール14に沿って左右方向に移動自在となっている。送りバイスジョー11jによって被削材Wをクランプして送りバイス11を左右方向に移動させると、ローラ13rが回転して被削材Wは左右方向に移動する。
被削材Wが図示していない搬送機構によって本体フレーム10上に上流側から下流側へと搬入されたら、送りバイス11は被削材Wを送りバイスジョー11jによってクランプし、切断後の製品Pの長さに応じた位置まで被削材Wを前進させる。このとき、本体バイスジョー12j及び製品搬出バイスジョー21jはアンクランプの状態である。製品Pの長さに相当する先端部が切断位置より突出したら、本体バイス12は被削材Wを本体バイスジョー12jによってクランプし、引き続き、製品搬出バイス21は被削材Wを製品搬出バイスジョー21jによってクランプする。
帯鋸刃32を回転走行させて鋸刃ハウジング30を下降させていく。これによって、帯鋸刃32が、被削材Wが搬送されるパスラインの上方からパスラインに向かって下降していく。帯鋸刃32の歯先32tが被削材Wの下端に達すると、被削材Wの切断(切削)が完了する。図4は、被削材Wの切断が完了した状態を示している。前述のように、被削材Wは駆動ホイール31a及び従動ホイール31bの径未満の長さで切断される。
被削材Wの切断完了後、本体バイス12は被削材Wをアンクランプする。送りバイス11は被削材Wをわずかに後退させ、製品搬出バイス21は切断された製品Pをわずかに前進させる。後退とは上流側への移動、前進とは下流側への移動である。第1実施形態においては、製品搬出バイス21をわずかに下降させることによって製品Pを前進させる。これによって、帯鋸刃32の歯先32tは切断後の被削材Wの先端面及び製品Pの後端面から離れ、帯鋸刃32を上方に退避させる際に歯先32tが損傷するのを防止することができる。
次に、鋸刃ハウジング30を上昇させて帯鋸刃32をパスラインの上方に退避させる。製品搬出バイス21は、帯鋸刃32の退避の完了後、製品Pをクランプしたまま下降する。ここでは製品搬出バイス21が帯鋸刃32の退避の完了後に下降するとしたが、第1実施形態では、後述するように、帯鋸刃32の退避を完了する前に、製品搬出バイス21の下降を開始させることができる場合がある。
製品搬出バイス21が傾斜面の下降端まで下降したら、製品搬出バイス21は製品Pをアンクランプする。製品回収装置40は、製品Pを製品回収コンベア42によって搬送して回収する。
帯鋸刃32が被削材Wのパスラインから上方に退避したら、送りバイス11は上流側に移動して被削材Wをクランプし、次いで本体バイス12がアンクランプしたことを確認してから被削材Wを切断するために被削材Wを前進させる。被削材Wの位置が確定したら、本体バイス12は被削材Wをクランプする。
製品Pが製品回収コンベア42によって搬送されたら、製品搬出バイス21を上昇端まで上昇させる。製品搬出バイス21の支持台21sを被削材Wの下方から当接させて被削材Wを支持する。そして、製品搬出バイス21は被削材Wを製品搬出バイスジョー21jによってクランプする。これによって、製品搬出バイス21は図1の状態に戻る。
帯鋸刃32を回転走行させて鋸刃ハウジング30を下降させていく。図7は、工程Gの製品搬出バイス21の戻し工程によって製品搬出バイス21を戻して、帯鋸刃32による被削材Wの切断が途中まで進行した状態を示している。帯鋸刃32の歯先32tが被削材Wの下端に達すると、被削材Wの切断が完了する。被削材Wの切断が完了すれば、上述した工程Cから工程Hまでを繰り返し、製品Pを順次製造していく。
図10~図15を用いて第2実施形態について説明する。図10~図15において、図1~図9で説明した第1実施形態と同一部分には同一符号を付し、その説明を適宜省略することとする。第2実施形態は、第1実施形態における製品搬出フレーム20及び製品搬出バイス21の代わりに昇降装置50及び製品搬出バイス51を設け、製品回収装置40の代わりに製品回収装置60を設けたものである。
図12に示すように被削材Wの切断完了後、本体バイス12は被削材Wをアンクランプする。送りバイス11は被削材Wをわずかに後退させ、製品搬出バイス51は切断された製品Pをわずかに前進させる。即ち、昇降装置50が上昇端に位置している状態で、製品搬出バイス51を下流側にわずかに移動させる。
次に、鋸刃ハウジング30を上昇させて帯鋸刃32をパスラインの上方に退避させる。昇降装置50が垂直方向に下降することによって、製品搬出バイス51は製品Pをクランプしたまま下降する。第2実施形態では、製品Pの長さが最大長さLmaxであっても、帯鋸刃32の退避を開始する前または退避を開始するのと同時に製品搬出バイス51の下降を開始させることができる。即ち、第2実施形態においては、帯鋸刃32の退避準備完了後は、製品Pの長さLにかかわらず、帯鋸刃32の位置にかかわらず、製品Pの搬出を開始することができる。
製品搬出バイス51が端部まで移動したら、製品搬出バイス51は製品Pをアンクランプする。製品回収装置60は、製品Pを製品回収コンベア62によって搬送して回収する。
製品Pが製品回収コンベア62によって搬送されたら、図15に示すように、製品搬出バイス51を昇降装置50の上流側の端部まで水平方向に移動させ、さらに、昇降装置50を上昇端まで垂直方向に上昇させる。製品搬出バイス51を水平方向に移動させつつ、昇降装置50を上昇させてもよい。製品搬出バイス51の支持台51sを被削材Wの下方から当接させて被削材Wを支持する。そして、製品搬出バイス51は被削材Wを製品搬出バイスジョー51jによってクランプする。これによって、製品搬出バイス51は図10の状態に戻る。
図16,図17を用いて第3実施形態について説明する。図16,図17において、図10~図15で説明した第2実施形態と実質的に同一部分には同一符号を付し、その説明を適宜省略することとする。
Claims (15)
- 上流側から下流側へと搬入された被削材をパスライン上で位置決めする送りバイスと、
一対のホイールに掛け回され、ひねられていない状態で回転走行し、前記パスラインの上方から下降して、前記送りバイスによって位置決めされた前記被削材を前記ホイールの径未満の長さで切断する帯鋸刃と、
前記被削材をクランプするバイスジョーを有し、前記帯鋸刃によって前記被削材を切断する切断完了前に前記被削材の切断位置よりも下流側をクランプして切断完了後もクランプを維持し、前記被削材を切断した製品をクランプしたまま下降して前記製品を前記パスラインより下方に搬出する製品搬出バイスと、
を備えることを特徴とする帯鋸盤。 - 上流側から下流側へと下降するように傾斜した傾斜面を有する製品搬出フレームを備え、
前記製品をクランプした前記製品搬出バイスを前記傾斜面に沿って搬出する
ことを特徴とする請求項1記載の帯鋸盤。 - 前記製品をクランプした前記製品搬出バイスを垂直方向に下降させる垂直移動機構と、
前記垂直移動機構によって下降させた前記製品搬出バイスを下流側へと水平方向に移動させる水平移動機構と、
を備えることを特徴とする請求項1記載の帯鋸盤。 - 前記製品搬出バイスは、前記被削材を下方から支持する支持台を有することを特徴とする請求項1~3のいずれか1項に記載の帯鋸盤。
- 前記帯鋸刃が前記被削材の切断を完了した下降端に位置している状態で前記製品搬出バイスを搬出したとき、前記バイスジョーの上端部が前記帯鋸刃に干渉しないように構成されていることを特徴とする請求項1~4のいずれか1項に記載の帯鋸盤。
- 前記帯鋸刃が前記被削材の切断を完了した下降端に位置している状態から前記帯鋸刃を上昇させて前記パスラインから退避させる際に、前記製品をクランプした前記製品搬出バイスを、前記製品の上端部が前記帯鋸刃に干渉しないタイミングで下降させることを特徴とする請求項1~5のいずれか1項に記載の帯鋸盤。
- 前記製品搬出バイスによって搬出した前記製品を回収する製品回収装置を備えることを特徴とする請求項1~6のいずれか1項に記載の帯鋸盤。
- 上流側から下流側へと搬入された被削材を送りバイスによってパスライン上で位置決めする位置決め工程と、
一対のホイールに掛け回され、ひねられていない状態で回転走行する帯鋸刃を前記パスラインの上方から下降させて、前記位置決め工程にて位置決めされた前記被削材を前記ホイールの径未満の長さで切断する切断工程と、
前記切断工程による切断完了前に、前記被削材をクランプする製品搬出バイスによって前記被削材の切断位置よりも下流側をクランプするクランプ工程と、
前記切断工程にて前記被削材を切断した製品を前記製品搬出バイスによってクランプしたまま下降させて、前記製品を前記パスラインより下方に搬出する搬出工程と、
を含む帯鋸盤の制御方法。 - 前記搬出工程は、前記製品をクランプした前記製品搬出バイスを、上流側から下流側へと下降するように傾斜した傾斜面に沿って搬出することを特徴とする請求項8記載の帯鋸盤の制御方法。
- 前記搬出工程は、
前記製品をクランプした前記製品搬出バイスを垂直方向に下降させる垂直移動工程と、
前記垂直移動工程にて下降させた前記製品搬出バイスを下流側へと水平方向に移動させる水平移動工程と、
を含むことを特徴とする請求項8記載の帯鋸盤の制御方法。 - 前記位置決め工程と、前記切断工程と、前記クランプ工程と、前記搬出工程と、前記製品回収工程とを順次繰り返し、
次の前記クランプ工程にて前記被削材をクランプするために、前記製品回収工程にて前記製品を回収した後の前記製品搬出バイスを、次の前記切断工程による切断完了前に次の前記位置決め工程によって位置決めされた前記被削材をクランプする位置に戻す戻し工程をさらに含む、
ことを特徴とする請求項8~10のいずれか1項に記載の帯鋸盤の制御方法。 - 前記戻し工程は、前記製品搬出バイスが有する支持台によって前記被削材を下方から支持することを特徴とする請求項11記載の帯鋸盤の制御方法。
- 前記切断工程による切断完了後に前記帯鋸刃を前記パスラインの上方へと退避させる退避工程をさらに含み、
前記搬出工程は、前記退避工程にて前記帯鋸刃を退避させる際に、前記製品をクランプした前記製品搬出バイスを、前記製品の上端部が前記帯鋸刃に干渉しないタイミングで下降させることを特徴とする請求項8~12のいずれか1項に記載の帯鋸盤の制御方法。 - 前記退避工程の前に、前記送りバイスによって前記被削材を上流側に移動させ、前記製品搬出バイスによって前記製品を下流側に移動させる退避準備工程をさらに含むことを特徴とする請求項8~13のいずれか1項に記載の帯鋸盤の制御方法。
- 前記搬出工程にて搬出した前記製品を回収する製品回収工程をさらに含むことを特徴とする請求項8~14のいずれか1項に記載の帯鋸盤の制御方法。
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DE19805254A1 (de) * | 1997-02-20 | 1998-08-27 | Hauser Karl | Bandsägemaschine |
US5918653A (en) * | 1998-06-17 | 1999-07-06 | U. S. Natural Resources | Adjustable support for conveyor |
IT1312032B1 (it) * | 1999-03-29 | 2002-04-04 | Italconverting Srl | Sega a nastro per il taglio in continuo di rotoli di materiale infoglio. |
US20020117030A1 (en) * | 2000-12-22 | 2002-08-29 | Gambaro Anthony M. | Multi-blade log saw |
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DE10305570B4 (de) * | 2002-10-02 | 2016-01-28 | Hans Hundegger Maschinenbau | Verfahren und Bearbeitungsanlage für das Bearbeiten von Holzwerkstücken |
US20070214924A1 (en) * | 2006-03-16 | 2007-09-20 | Jourdan James K | Material puller assembly |
DE102007024219A1 (de) * | 2007-05-11 | 2008-11-13 | GreCon Dimter Holzoptimierung Süd GmbH & Co. KG | Vorrichtung zum Zuführen von Brettern zu Kappsägen |
JP5216394B2 (ja) | 2008-04-11 | 2013-06-19 | 株式会社アマダ | 帯鋸盤における切粉除去装置 |
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2011
- 2011-12-27 JP JP2011284938A patent/JP5759361B2/ja not_active Expired - Fee Related
-
2012
- 2012-11-19 DE DE112012005476.8T patent/DE112012005476B4/de not_active Expired - Fee Related
- 2012-11-19 US US14/362,268 patent/US20140360324A1/en not_active Abandoned
- 2012-11-19 WO PCT/JP2012/079895 patent/WO2013099470A1/ja active Application Filing
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JP2002283136A (ja) * | 2001-03-21 | 2002-10-03 | Amada Co Ltd | ワークの切断方法及び装置 |
JP2012240313A (ja) * | 2011-05-19 | 2012-12-10 | Sanwa Daiya Kouhan Corp | 切断装置及び切断方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014162866A1 (ja) * | 2013-04-02 | 2014-10-09 | 株式会社 アマダ | 切断機、切断方法、及び、シュート |
JP2014200859A (ja) * | 2013-04-02 | 2014-10-27 | 株式会社アマダ | 切断機,切断機を用いた切断方法,及びシュータ |
US10828708B2 (en) * | 2015-10-27 | 2020-11-10 | Amada Holdings Co., Ltd. | Band saw machine |
Also Published As
Publication number | Publication date |
---|---|
DE112012005476B4 (de) | 2019-05-16 |
JP2013132724A (ja) | 2013-07-08 |
JP5759361B2 (ja) | 2015-08-05 |
US20140360324A1 (en) | 2014-12-11 |
DE112012005476T5 (de) | 2014-09-04 |
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