WO2006008862A1 - 帯板材の曲げ加工方法及びその曲げ加工装置 - Google Patents
帯板材の曲げ加工方法及びその曲げ加工装置 Download PDFInfo
- Publication number
- WO2006008862A1 WO2006008862A1 PCT/JP2005/007445 JP2005007445W WO2006008862A1 WO 2006008862 A1 WO2006008862 A1 WO 2006008862A1 JP 2005007445 W JP2005007445 W JP 2005007445W WO 2006008862 A1 WO2006008862 A1 WO 2006008862A1
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- WIPO (PCT)
- Prior art keywords
- bending
- plate material
- pair
- bending member
- hole
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/60—Making other particular articles cutlery wares; garden tools or the like
- B21D53/64—Making other particular articles cutlery wares; garden tools or the like knives; scissors; cutting blades
Definitions
- the present invention relates to a bending method for a band plate material such as a band blade material used in a Thomson type punching die, and a bending apparatus for the same.
- the strip-shaped blade material 62 is intermittently fed into the working mold portion and bent into a shape in which the bent portion is continuous by the working mold portion.
- the processing mold part is composed of a shaft body 60 and a cylindrical body 61 that is fitted around the shaft body 60 in a mating state, and the shaft body 60 has a through-hole having a cross section that substantially matches the cross section of the band-shaped blade material 62 63 is formed so as to penetrate at right angles to the axis of the shaft body 60, and a first opening 64a and a second opening 64b are formed in the cylindrical body 61 at a portion facing the open end of the through hole 63, and the shaft A predetermined gap G is provided between the outer peripheral surface of the forming portion of the through hole 63 in the body 60 and the inner peripheral surface of the opening forming portion of the cylindrical body 61, and from the through hole 63 through the second opening 64b.
- a strip-hole having a cross section that substantially matches the cross section of the band-shaped blade material 62 63 is formed
- the folding portion 67 includes a bending fixing body 69 having a guide port 68 having a size through which the cutting blade 65 can pass, while the bending portion 67 bends the bending member 70.
- the bending member 70 rotates and moves around the outer periphery of the bending fixing body 69, the bending member 70 comes into contact with the cutting edge 65 protruding from the guide port 68, so that the cutting edge 65 is the rotational force of the bending member 70.
- Prior Art 2 has also been proposed (see, for example, Patent Document 2, hereinafter referred to as “Prior Art 2”) in which the folding body is bent along the inclined surface 71 of the tip of the bending fixing body 69. ) 0
- Patent Document 1 Japanese Patent Laid-Open No. 6-328133
- Patent Document 2 JP-A-9-225534 Disclosure of the invention
- the strip-shaped blade member 62 has an outlet-side open end 63a of the through hole 63 of the shaft body 60, and a first opening 64a of the cylindrical body 61 facing the open end 63a. Between the open end of the shaft body 60 and the inner peripheral surface of the cylindrical body 61, at least from the plate thickness of the band-shaped blade material 62. It was necessary to provide a larger gap G (see the description of [0007] and [002 0] in the above-mentioned Japanese Patent Laid-Open No. 6-328133).
- a gap G larger than at least the plate thickness of the cutting edge 65 is provided between the bending member 70 and the outer periphery of the bending fixing body 69.
- the present invention has been made in order to solve the above-mentioned problems.
- the object of the present invention is not only a simple bending shape that bends the middle part of the strip material to a right angle, an acute angle or an obtuse angle, It is an object of the present invention to provide a method for bending a strip material and an apparatus for bending the same that can be easily bent into a variety of bending shapes that are slightly complicatedly deformed.
- the method for bending a strip material of the present invention includes the above-described method at the tip of the guide nozzle (3) having a through hole (8) through which the strip plate (2) is inserted.
- the opening end force at the outlet side of the through hole (8) According to the bending method of the band plate material for bending the protruding band plate material, both sides near the outlet side open end of the through hole at the tip of the internal nozzle Further, a pair of bending members (4), (5) are disposed so as to be close to or in contact with the thickness direction both side surfaces of the band plate member projecting from the open end on the outlet side of the through hole, respectively.
- One bending member of the bending member is not in contact with one side in the thickness direction of the band plate material protruding from the outlet side opening end force of the through hole, and is adjacent to and around the tip of the other bending member. A force that does not rotate The band plate material is bent at the tip of the one bending member.
- the apparatus for bending a strip material of the present invention includes an insertion of the strip material (2).
- the tip of the guide nozzle in a bending device for a strip plate material that bends the strip plate that also projects the open end force at the exit side of the through hole at the distal end portion of the guide nozzle (3) having a through hole (8) that is passed therethrough.
- a pair of bending members (4) and (5) project the respective end portions (4a) and (5a) through the outlet side open end force of the through hole on both sides in the vicinity of the outlet side open end of the through hole in the portion.
- the pair of bending members are provided so as to be close to or in contact with both side surfaces in the thickness direction of the band plate material, respectively, and the pair of bending members are provided to rotate individually around the distal end portion of the mating bending member. It has a special feature.
- a strip plate bending apparatus includes a pair of feed rollers (20) for feeding the strip plate material into the through-hole and one feed roller as shown in FIG.
- a transfer mechanism (22) comprising a feed motor (21) for rotationally driving can be provided.
- the bending member includes a pair of driven gears (34) (35) in which the rotation of a bending member driving motor (42) for forward / reverse driving is transmitted via a gear transmission mechanism (43). ) To rotate.
- a swing arm (32) (33) for transmitting the rotation of the driven gear to the bending member can be provided between the driven gear and the bending member.
- the respective cross sections of the tip portions (4a) and (5a) of the pair of bending members (4) and (5) can be formed in a tapered shape as shown in FIGS. 2 and 6, for example.
- an escape recess (28) can be provided on each back side of the pair of bending members.
- Each of the pair of bending members (4) and (5) can be formed in a circular cross section as shown in FIG.
- the band plate bending apparatus has, as shown in FIG. 18, for example, a distance between the tip portions (4a) and (5a) of the pair of bending members (4) and (5).
- a bending member interval adjusting device (57) that can be variably adjusted according to the thickness of the band plate material, and a turning radius adjusting device (58) that can variably adjust the turning radius of each tip of the pair of bending members can be provided.
- the bending member interval adjusting device (57) includes a first eccentric shaft (38) rotatably supporting the base portions (32a) (33a) of the swing arms (32) (33) of the pair of bending members.
- the turning radius adjusting device (58) includes an L-shaped shim having a predetermined thickness between the pair of bending members and the tip end portions (32b) (33b) of the swing arms (32) (33). 96) can be configured to be detachable.
- the opening side open end force of the through hole (8) of the guide nozzle (3) is also applied to one side surface of the projecting strip (2).
- the bending member (5) or (4) is rotated while rotating the other bending member (5) or (4) around the tip of the bending member (4) or (5).
- the strip plate By sliding the tip of the strip plate (2) on the other side, the strip plate can be folded or bent along the tip of one bending member (4) or (5).
- the middle part can be easily bent to a right angle, an acute angle or an obtuse angle.
- the opening end force on the outlet side of the through hole (8) of the guide nozzle (3) Do not rotate the other bending member (5) around the tip of the one bending member (4) while abutting or approaching one side of the surface of the bending member (4).
- the strip material (2) can be bent into an arc (21) from the beginning. Therefore, if the straight part is provided before bending into a circular arc as in the conventional bending calorie shown in Fig. 25, there is no waste, and post-processing to cut off the straight line part after bending is unnecessary, so that the arc starts from the beginning. Bending has become economically and reasonably possible without material loss.
- the strip (2) is bent at a right angle by sliding the tip of the bending member (4) or (5) to the other side of the strip (2) while rotating 90 °, and then (b) Return the other bending member (4) or (5) to its original position as shown in the figure, and let the strip plate (2) bent at a right angle project the opening end force on the outlet side of the through hole (8) by a predetermined length. Then, contrary to the case of the previous processing, reverse one bending member (5) or (4) around the tip of the other bending member (4) or (5) as shown in FIG. Sliding one protruding side of the strip (2) while rotating 90 degrees in the direction Can be bent at right angles. Therefore, as shown in FIG. 28 (b), the troublesome strip plate material (2) that projects back the previously bent portion 623 can be easily bent and bent into a crank shape.
- FIG. 1 is a front view of an apparatus for bending a strip material showing an embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along line AA in FIG.
- FIG. 3 is a cross-sectional view taken along line BB in FIG.
- FIG. 4 is an exploded perspective view of the bending apparatus of FIG.
- FIG. 5 is a perspective view of a guide nozzle of the bending carriage apparatus of FIG. 1.
- FIG. 6 is a perspective view of a pair of bending members of the bending apparatus of FIG.
- FIG. 7 is a side view showing a manner of removing the bending member of the bending apparatus of FIG. 1.
- FIG. 8 is a longitudinal sectional side view showing each bending member and each tip portion of a guide nozzle according to another embodiment.
- FIG. 9 is an explanatory view showing an example of bending.
- FIG. 10 is an explanatory view showing another example of bending.
- FIG. 11 is an explanatory view showing still another example of bending.
- FIG. 12 (a) and (b) are explanatory views showing still another example of bending.
- FIG. 13 (a), (b) and (c) are explanatory views showing still another example of bending.
- FIG. 14 (a) and (b) are explanatory views showing still another example of bending.
- FIG. 15 (a) and (b) are explanatory views showing still another example of bending.
- FIG. 16 is a perspective view of left and right holders showing another embodiment.
- FIG. 17 is an exploded perspective view of one holder shown in FIG.
- FIG. 18 is an explanatory view corresponding to FIG. 2 showing a bending member interval adjusting device and a turning radius adjusting device of another embodiment.
- FIG. 19 (a) is an explanatory diagram for processing a thin strip, and (b) is an explanatory diagram for processing a thick strip.
- FIG. 20 is an explanatory view showing still another embodiment corresponding to FIG.
- FIG. 21 is a longitudinal side view showing another modified example of the bending member.
- FIG. 22 is a schematic view of an apparatus for bending a strip material of a conventional example.
- FIG. 23 is a schematic diagram of another conventional example of a strip plate bending apparatus.
- FIG. 24 is an explanatory view showing a failure example of bending by the bending apparatus of the conventional example of FIG.
- FIG. 25 (a), (b), and (c) are explanatory diagrams showing an example of a defect in bending by the conventional bending apparatus of FIG.
- FIG. 26 is a side view showing a band plate material bent into a crank shape.
- FIG. 27 is a side view showing a band plate material having a shape in which a portion bent into a small radius is further bent in the opposite direction.
- 28 (a) and 28 (b) are explanatory diagrams showing an example of a defect in bending by the conventional bending apparatus shown in FIG.
- FIGS. 29 (a) and 29 (b) are explanatory views showing still another example of the problem of bending by the conventional bending apparatus shown in FIG.
- FIG. 1 is a front view of a bending apparatus for strip material showing an embodiment of the present invention
- FIG. 2 is a cross-sectional view taken along line AA in FIG. 1
- FIG. 3 is a cross-sectional view taken along line BB in FIG. 4
- FIG. 5 is a perspective view of a guide nozzle of the bending apparatus of FIG. 1
- FIG. 6 is a pair of bending members of the bending apparatus of FIG. It is a perspective view.
- the bending apparatus for a strip material of the present invention is a guide that is held while a strip plate material 2 such as a strip-shaped blade material having a blade edge 1 attached to one side in the width direction is inserted.
- the nozzle 3 includes a pair of bending members 4 and 5 that are disposed in the vicinity of the tip of the guide nozzle 3 and that are used to bend the band plate 2.
- the guide nozzle 3 is provided with inclined surfaces 6 and 7 that approach each other on the front and rear surfaces of the tip, so that the cross-section of the tip is tapered.
- a through hole 8 having a cross-sectional shape substantially corresponding to the cross-sectional shape of the strip 2 is formed in a vertically penetrating manner so as to open the outlet-side open end 8a at the front end.
- Seats 9 are formed on the left and right ends of the guide nozzle 3 so as to project integrally in the front-rear direction.
- the guide nozzle 3 is fixed on the nozzle support 11 as shown in FIGS. nozzle
- the support base 11 is a guide cylinder in which a conduction path 12 is formed in a vertically penetrating manner for introducing the band blade material 2 to the inlet side open end 8b of the through hole 8 of the guide nozzle 3.
- a nozzle mounting surface 14 is provided at the upper left and right ends of the guide tube portion 13, and a holder mounting surface 16 is provided on each outer side of the left and right nozzle mounting surfaces 14. As shown in FIG.
- a bearing 18 that receives one end in the width direction of the strip plate material 2 and a presser roller 19 that holds the other end in the width direction of the strip plate material 2 are incorporated into the conduction path 12 of the nozzle support base 11. Guide the strip 2 so that it is fed straight upward and stably.
- a transfer mechanism unit 22 comprising a pair of feed rollers 20 (only one feed roller is shown in FIG. 1) and a feed motor 21 that rotationally drives one feed roller 20 is installed.
- the strip plate material 2 is passed between the feed rollers 20 and 20, and the strip plate material 2 is fed into the conduction path 12 of the nozzle support base 11 by driving the feed motor 21.
- the drive of the feed motor 21 is controlled by a computer (not shown), a program corresponding to the contents of various bending operations of the strip 2 is created, and a signal based on the command of this program is also input to the feed motor 21.
- a computer not shown
- the guide nozzle 3 has left and right seats 9 and 9 mounted on the nozzle so that the inlet side open end 8b of the through hole 8 coincides with the upper end of the opening of the conduction path 12. They are placed on the surfaces 14 and 14 and fixed to the nozzle support 11 by tightening them with the nozzle mounting bolts 23, respectively.
- the pair of front and rear bending members 4 and 5 are each formed in a quadrilateral shape in which the cross section of each pair of forces is parallel and the tip portions 4a and 5a are formed in a tapered shape.
- the bending member bodies 24 and 25 and the left and right arm portions 26 and 27 integrally formed at the left and right ends of the bending member bodies 24 and 25 are formed in a gate shape in a front view.
- the band plate material 2 is about 180 degrees. When it is bent greatly, a relief recess 28 is provided to prevent interference with the bent portion.
- the pair of front and rear bending members 4 and 5 are formed in the thickness direction of the strip plate material 2 in which the tip portions 4a and 5a protrude from the outlet side open end 8a of the through hole 8 of the guide nozzle 3. Opposing front and rear so as to be close to or abut on one side and the other side, respectively.
- the tip portions 4a, 5a of the pair of front and rear bending members 4, 5 are arranged so as to face each other further ahead of the tip portion of the guide nozzle 3, but as shown in FIG.
- the ends 4a, 5a and the tip of the guide nozzle 3 may be substantially aligned on the same line L.
- the front end portions 4a and 5a of the bending members 4 and 5 When the front end portions 4a and 5a of the bending members 4 and 5 are brought into contact with both side surfaces in the thickness direction of the strip plate material 2, the front end portions 4a and 5a of the bending members 4 and 5 are disposed on both side surfaces in the thickness direction of the strip plate material 2. Instead of making contact with a strong contact pressure, the strip material 2 is made to contact in a weak contact state to allow it to pass between the tip portions 4a, 5a of the bending members 4, 5.
- the pair of front and rear bending members 4, 5 are placed on the left and right holder placement surfaces 16, 16 of the nozzle support base 11 so as to face each other, and each holder mounting bolt A pair of left and right swing arms 32, 32, which can be individually rotated around the tip of the other bending member 4 or 5 between the pair of left and right holders 30, 31 fastened and fixed at 29. It is supported together with a pair of left and right driven gears 34, 35 via 33, 33.
- the pair of left and right holders 30, 31 are both the same, and on each inner surface side, a pair of left and right oscillating arms 32, 32, 33, 33 of the driven gears 34, 35 and the front and rear bending members 4, 5 are provided.
- a stepped support shaft 36 is provided protruding to support each of these with different rotation centers.
- Each stepped support shaft 36 includes a gear support shaft 37 that rotatably supports the driven gears 34, 35, and an eccentric position of the end surface of the gear support shaft 37, and is integrally projected to swing the rear bending member 5.
- the first eccentric shaft 38 that rotatably supports the moving arm 33, and the first eccentric shaft 38 that protrudes integrally at the eccentric position of the end surface of the first eccentric shaft 38 and that rotatably supports the swing arm 32 of the front bending member 4. And a stepped shape having two eccentric shafts 39.
- the gear support shafts 37 and 37 of the left and right holders 30 and 31, the first eccentric shafts 38 and 38, and the second eccentric shafts 39 and 39 are positioned on the same axis line. Note that the center of the gear support shaft 37 may coincide with the center of either the first eccentric shaft 38 or the second eccentric shaft 39.
- the pair of left and right oscillating arms 32, 32 of the front bending member 4 includes a base 32a having a shaft hole 40a rotatably inserted into the second eccentric shaft 39, and the base 32a.
- the front bending member 4 is formed in a shape including a tip portion 32b attached to the arm portion 26 of the bending member 4.
- the tip 32b of the swing arm 32 is overlapped with the front side of the arm part 26 of the front bending member 4, and the arm mounting bolt 41 is tightened from the rear side of the arm part 26 so that the bending member 4 And united together.
- the pair of left and right swing arms 33 and 33 of the bending member 5 on the rear side includes a base portion 33a having a shaft hole 40b that is rotatably inserted into the first eccentric shaft 38, and a rear portion connected to the base portion 33a. And a distal end portion 33b attached to the arm portion 27 of the bending member 5.
- the tip 33b of the swing arm 33 is overlapped with the rear side of the arm 27 of the rear bending member 5, and the arm mounting bolt 41 is tightened with the front force of the arm 27 so that the bending member 5 And are integrally coupled.
- the gear transmission mechanism 43 includes a driving gear 44 fixed on the shaft of the motor 42, and an intermediate shaft 45 fixed to an intermediate shaft 45 installed inside the nozzle support 11 so as to be parallel to the shaft of the motor 42.
- 1 to 3 pinions 46 to 48, the driving gear 44 and the first pinion 46 are combined, the second pinion 47 and the left driven gear 34 are combined, and the third pinion 48 and the right driven gear 35 are combined.
- the drive of the motor 42 is controlled by the computer, and a signal based on a command of a program created corresponding to the contents of various bending forces of the strip 2 is input to the computer force motor 42.
- a transmission protrusion 51 formed in an arc shape along the circumferential direction of the driven gear 34 is fixed to a portion near the outer periphery of the inner side surface of the left driven gear 34. Then, the passive portion 52 provided on the front end portion 32b of the front swing arm 32 is brought into contact with the front end surface 51a of the transmission projection 51, and the front end portion 33b of the rear swing arm 33 is brought into contact with the rear end surface 51b of the transmission projection 51. Abut the receiving part 53 provided in.
- a spring member 54 such as a torsion coil spring is hung between the front and rear swing arms 32 and 33, and the above-described front and rear contact state is always maintained by the spring biasing force of the spring member 54. Speak.
- the passive portion 52 provided at the front end portion 32b of the front swing arm 32 abuts on the front end surface 51a of the transmission projection 51 as described above, and at the same time, as shown in FIG. It is also in contact with the receiving projection 55 (see Fig. 4) provided on the seat 9 that protrudes forward.
- the passive portion 53 provided at the tip 33b of the swing arm 33 on the rear side is in contact with the rear end surface 51b of the transmission projection 51 and at the same time is provided on the seat 9 protruding rearward on the left side of the guide nozzle 3. It also makes contact with the protrusion 56 (see Fig. 4). Accordingly, when one of the front and rear bending members 4 and 5 rotates around the tip of the other stationary bending member 4 or 5, the stationary bending member 4 or 5 rotates the driven gear 34. Along with this, it is sure to stop at a fixed position without rotating.
- the right transmission mechanism is formed in an arc shape along the circumferential direction of the driven gear 35, similar to the left driven gear 34, at the outer peripheral portion of the inner surface of the right driven gear 35.
- the transmission projection 51 is fixed, the passive portion 52 provided at the front end portion 32b of the front swing arm 32 is brought into contact with the front end surface 51a of the transmission projection 51, and the rear end surface 51b of the transmission projection 51 is The passive portion 53 provided at the distal end portion 33b of the moving arm 33 is brought into contact.
- a spring member 54 such as a torsion coil spring is hung between the front and rear swing arms 32 and 33, and the above-described front and rear contact state is always maintained by the spring biasing force of the spring member 54. Yes.
- the passive portion 52 provided at the distal end portion 32b of the swinging arm 32 on the front side is in contact with the front end surface 51a of the transmission projection 51 and at the same time extends to the right front of the guide nozzle 3. It is also in contact with the receiving projection 55 provided on 9.
- the passive portion 53 provided at the front end portion 33b of the swing arm 33 on the rear side is guided simultaneously with the rear end surface 51b of the transmission projection 51. Also, contact the receiving projection 56 provided on the seat 9 projecting rearward on the right side of the nozzle 4. This ensures that the stationary bending member 4 or 5 does not rotate with the rotation of the driven gear 35 and stops at a fixed position.
- one bending member (the rear bending member in the illustrated example) 5 is a receiving projection 56 of the seat portion 9 in which the passive portion 53 of the tip portion 33b of the rear swing arm 33 projects to the rear of the guide nozzle 3.
- the other bending member (front bending member in the illustrated example) 4 is a bending member drive motor 42, a gear transmission mechanism 43, left and right driven gears 34, 35, and a front side. Rotates via transmission by a pair of left and right swing arms 32, 32 (the same applies hereinafter) o
- the band plate material 2 in order to bend the band plate material 2 by about 130 degrees, it contacts or is close to one side surface of the band plate material 2 protruding from the outlet side open end 8a of the through hole 8 of the guide nozzle 3.
- the other bending member (front bending member in the illustrated example) 4 is bent at a right angle as described above, around the tip 5a of one bending member (the rear bending member in the illustrated example) 5
- the band 2 can be bent along the tip 5a of one bending member 5 at 130 degrees.
- the belt plate material 2 is driven by the feed motor 21 of the transfer mechanism 22 to open the outlet side open end 8a of the through hole 8 of the guide nozzle 3. While slightly projecting from the side of the band plate material 2, it does not come into contact with and close to one side of the band member 2 (in the illustrated example, the rear side bending member) 5, around the tip 5 a of the other bending member ( In the illustrated example, the front bending member 4 is rotated by a predetermined angle, and the band plate 2 is slightly bent at the tip 4a of the bending member 4, and then the other bending member 4 is moved while further protruding the band plate 2. By repeating the operation of rotating the belt member 2 slightly at the front end 4a of the bending member 4 by rotating it a predetermined angle several times. The strip 2 can be bent to 180 degrees with the desired curvature.
- the bent portion 23 of the band plate member 2 escapes into the escape recess 28 provided on the back side of the stationary-side bending member 5, so that it does not interfere with the bending member 5.
- the strip plate material 2 is projected little by little from the outlet side open end 8a of the through-hole 8 of the guide nozzle 3, and is not brought into contact with one side surface of the strip plate material 2.
- the bending member 5 is rotated while the other bending member (the rear bending member in the illustrated example) 5 is rotated around the distal end portion 4a of the one bending member (the front bending member in the illustrated example) 4.
- the strip plate member 2 can be bent to the arc 21 at the initial force.
- the strip plate material 2 can be bent into a crank shape (Z-shape).
- Z-shape the strip plate material 2 protruding from the outlet side open end 8a of the through hole 8 of the guide nozzle 3 is not in contact with, but is in close proximity to. Bend the tip 4a of the bending member 4 while rotating the other bending member 4 (the bending member on the front side in the example) 90 degrees around the tip 5a of the bending member 5 The strip 2 is bent at a right angle by sliding to the other side of the strip 2.
- FIG. 13 (a) one side of the strip plate material 2 protruding from the outlet side open end 8a of the through hole 8 of the guide nozzle 3 is not in contact with, but is in close proximity to. Bend the tip 4a of the bending member 4 while rotating the other bending member 4 (the bending member on the front side in the example) 90 degrees around the tip 5a of the bending member 5 The strip 2 is bent at a right angle by sliding to the other side of the strip 2.
- the other bending member 4 is returned to the original position, and the strip plate material 2 bent at a right angle is further projected from the outlet side open end 8a of the through hole 8 by a predetermined length.
- the one bending member 5 is rotated 90 degrees in the opposite direction around the tip 4a of the other bending member 4, while the bending member 5 The tip 5a is bent at a right angle by sliding it on one side of the strip 2 that protrudes. As a result, the band plate material 2 can be easily bent into a crank shape without difficulty.
- 13 (c) includes a bending member drive motor 42, a gear transmission mechanism 43, left and right driven gears 34 and 35, and a pair of left and right swings on the rear side.
- the other bending member 4 is rotated by transmission by the arms 33 and 33, and the passive part 52 of the front end 32b of the swinging arm 32 on the front side contacts the receiving projection 55 of the seat part 9 projecting forward of the guide nozzle 3. By touching, it stops without rotating.
- the bent portion 22 obtained by bending the band plate material 2 into a small radius can be further bent in the opposite direction.
- the other bending member 4 is placed around the tip 5a of one bending member 5 so that it does not abut on one side of the band plate material 2 which has been bent into a small radius, and is in close proximity.
- the bending member while rotating in the direction opposite to the bending portion
- the tip 4a of 4 can be bent in the opposite direction by sliding it to the other side of the strip 2. This can be done safely and easily without causing the bending member 4 to be damaged.
- the strip plate material 2 is bent into a long U shape with a larger radius than in the case of the bending case of FIG. 14, and this bent portion is further reversed. It can be bent.
- the strip plate material 2 is slightly moved from the outlet side open end 8a of the through hole 8 of the guide nozzle 3.
- the strip 2 is bent slightly into a long U shape with a large radius by repeating the operation of slightly bending the strip 2 at the tip 5a of the bending member 5 while rotating the rear 5) by a predetermined angle.
- the other bending member 5 is returned to its original position, and then, one bending member 4 is moved around the tip 5a of the other bending member 5 as opposed to the previous processing.
- the U-shaped bent portion 23 can be bent at a right angle by sliding the distal end portion 4a of the bending member 4 to the protruding side surface of the strip plate 2 while rotating in the reverse direction.
- the bending apparatus of the above embodiment is further provided with a pair of bending members 4, 5 Bending member interval adjusting device 57 that can variably adjust the interval between the tip portions 4a and 5a of the belt plate 2 in accordance with the thickness of the strip plate 2, and the bending member that is inevitably necessary for bending processing along with the adjustment of the interval
- a turning radius adjusting device 58 capable of variably adjusting the turning radius of each of the tip end portions 5a and 4a rotating around the tip end portions 5a and 4a on the other side of 4 and 5;
- the bending member interval adjusting device 57 and the turning radius adjusting device 58 will be specifically described.
- the bending member interval adjusting device 57 is provided with each swing arm of the pair of bending members 4 and 5 on the stepped support shafts 36 on the left and right holders 30 and 31, respectively.
- an eccentric shaft rotation adjustment mechanism capable of rotating the first eccentric shaft 38 and the second eccentric shaft 39, which rotatably support the base portions 32a and 33a of the 32 and 33, in opposite directions to each other at an arbitrary angle.
- this eccentric shaft rotation adjusting mechanism has a gear support shaft 37 formed in a hollow shape and has a first eccentric shaft.
- a central hole 381 is provided in 38, a cylindrical central shaft 382 is integrally projected on one end surface of the first eccentric shaft 38, and a central shaft 391 is integrally projected on one end surface of the second eccentric shaft 39. Then, the central shaft 382 of the first eccentric shaft 38 is passed through the gear support shaft 37, the central shaft 391 of the second eccentric shaft 39 is passed through the central hole 381 and the central shaft 382 of the first eccentric shaft 38, and the first 1 Center shaft of eccentric shaft 38 Gear of 382
- the first worm gear 80 is fixed to the end protruding from the support shaft 37 via a spline, key, etc., from the first eccentric shaft 38 of the central shaft 391 of the second eccentric shaft 39
- a second worm gear 81 having the same diameter as that of the first worm gear 80 is arranged on the projecting end portion and fixed to the first worm gear 80 via a spline, a key or the like.
- the first and second worms 82 and 83 having the same diameters respectively engaged with the first worm gear 80 and the second worm gear 81 are mounted on the holders 30 and 31, respectively. It is assembled with a pair of upper and lower worm support plates 84 and 85 that support the upper and lower ends.
- the first worm 82 and the second worm 83 are made by mating the pions 86 and 87 attached to the upper and lower ends of each other.
- a square hole 88 is provided in the upper end surface of one of the first worm 82 and the second worm 83 (second worm 83 in the illustrated example), and this square hole 88 is opened at each upper part of the holders 30 and 31. 89.
- the first worm gear is obtained.
- 80 and the second worm gear 81 rotate in directions opposite to each other, and the first eccentric shaft 38 and the second eccentric shaft 39 rotate in directions opposite to each other along with this rotation, and swing arms 32 and 33 that rotate along with this rotation.
- the distance between the tip portions 4a and 5a of the bending members 4 and 5 can be variably adjusted via the.
- the turning radius adjusting device 58 that variably adjusts the turning radii of the pair of bending members 4 and 5 after adjusting the distance between the bending members is the arm portions 26 and 27 of the bending members 4 and 5 shown in FIG. And the tip portions 32b and 33b of the swing arms 32 and 33. That is, as shown in FIG. 18, the first receiving surface 90, which receives the back surfaces 26a, 27a of the arm portions 26, 27 of the bending members 4, 5 on the tip portions 32b, 33b of the swing arms 32, 33, respectively. Cutout portions 94 and 95 having L-shaped cross sections each having 91 and second receiving surfaces 92 and 93 for receiving lower end surfaces 26b and 27b orthogonal to the rear surfaces 26a and 27a of the arm portions 26 and 27 are provided.
- the arm portions 26 and 27 of the bent members 4 and 5 are respectively attached to the notches 94 and 95 of the tip portions 32b and 33b of the swing arms 32 and 33, and an L-shaped shim having a predetermined thickness made of metal.
- Arm mounting across 96 Secure with bolts 41.
- the bending members 4 and 5 can be moved in the F direction by combining the force moving in the D direction and the force moving in the E direction as shown in Fig. 18, and the tip portions 4a and 5a are connected to each other. Are driven in the direction of approaching each other.
- the rotation trajectory C1 of the bending members 4 and 5 obtained as a result is shown in FIG. 19 (a).
- the radius of the rotation trajectory C1 is rl.
- FIG. 19 (b) is thicker than the thickness of the strip plate material 2 (eg, 0.45 mm thickness) shown in FIG. 19 (a).
- the arm mounting bolt 41 is loosened, Remove shim 96 and tighten arm mounting bolt 41 again.
- the bending members 4 and 5 are powered in a direction in which the tip portions 4a and 5a are separated from each other as shown in FIG. 19 (b).
- the tip portions 4a and 5a of the bending members 4 and 5 can draw a rotation locus C2 having a rotation radius r2 (r2> r 1) corresponding to the adjustment of the bending member interval.
- two adjusting screws 97 and 98 can be used as shown in FIG.
- the two adjusting screws 97 and 98 are screwed into the end portions 32b and 33b of the swing arms 32 and 33 from directions orthogonal to each other, and the end portion 97a of one of the adjusting screws 97 is attached to the first receiving surfaces 90 and 91.
- the projecting tip is brought into contact with the rear surfaces 26a and 27a of the arms 26 and 27 of the bending members 4 and 5, and the tip of the other adjusting screw 98 is projected onto the second receiving surfaces 92 and 93.
- the protruding tip is brought into contact with the lower end surfaces 26b, 27b of the arm portions 26, 27 of the bending members 4, 5.
- the bending member main bodies 24 and 25 of the bending members 4 and 5 of this modification are formed in a cross-sectional shape of the bending member main bodies 24 and 25 of the bending members 4 and 5 of the above-described embodiment shown in FIGS.
- the front end portions 4a and 5a of the bending members 4 and 5 have an arcuate cross section.
- arm portions 26, 27 that are integrally coupled to the tip portions 32b, 33b of the swinging arms 32, 33 are formed on the left and right ends of the bending members 4, 5 having a circular cross section. This is the same as in the above embodiment.
- each of the bending member bodies 24 and 25 having a circular cross section and the arm portions 26 and 27 are integrally formed.
- each of the bending member bodies 24 and 25 is formed of a pin member, and the arm portions 26 and 27 that are separate from the left and right ends of each pin member are integrally coupled by welding or force bonding. It may be a thing.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2004210976 | 2004-07-20 | ||
JP2004-210976 | 2004-07-20 | ||
JP2004242106A JP2006055896A (ja) | 2004-07-20 | 2004-08-23 | 帯板材の曲げ加工方法及びその曲げ加工装置 |
JP2004-242106 | 2004-08-23 |
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WO2006008862A1 true WO2006008862A1 (ja) | 2006-01-26 |
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WO2008029444A1 (fr) * | 2006-09-05 | 2008-03-13 | Suehiro Mizukawa | Procédé de cintrage de plaques en bandes et appareil pour celui-ci |
CN109622673B (zh) * | 2018-11-30 | 2021-02-09 | 西安宏钛航空科技有限公司 | 一种钛合金感应加热成型方法及系统 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06226351A (ja) * | 1993-02-01 | 1994-08-16 | Itami Kogyo Kk | ナイフの曲げ加工装置 |
WO1995000266A1 (fr) * | 1993-06-17 | 1995-01-05 | Suehiro Mizukawa | Appareil a cintrer une plaque de bande |
-
2004
- 2004-08-23 JP JP2004242106A patent/JP2006055896A/ja active Pending
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2005
- 2005-04-19 WO PCT/JP2005/007445 patent/WO2006008862A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06226351A (ja) * | 1993-02-01 | 1994-08-16 | Itami Kogyo Kk | ナイフの曲げ加工装置 |
WO1995000266A1 (fr) * | 1993-06-17 | 1995-01-05 | Suehiro Mizukawa | Appareil a cintrer une plaque de bande |
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