WO2020230538A1 - Acute-angle bending tool for hemming - Google Patents

Acute-angle bending tool for hemming Download PDF

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Publication number
WO2020230538A1
WO2020230538A1 PCT/JP2020/017070 JP2020017070W WO2020230538A1 WO 2020230538 A1 WO2020230538 A1 WO 2020230538A1 JP 2020017070 W JP2020017070 W JP 2020017070W WO 2020230538 A1 WO2020230538 A1 WO 2020230538A1
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Prior art keywords
mold
mold portion
panel
shaped
bending
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PCT/JP2020/017070
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French (fr)
Japanese (ja)
Inventor
宏嘉 泉澤
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株式会社信濃製作所
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Publication of WO2020230538A1 publication Critical patent/WO2020230538A1/en

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    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • 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
    • B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures

Definitions

  • the present invention relates to an acute-angle bending tool for hemming for performing an acute-angled bending on a flange-shaped edge portion provided on the panel in a flange shape when the panel is hemmed.
  • a sharp-angle bending is performed by further bending a flange-shaped edge portion formed by bending the edge of the panel into a flange shape in advance so as to form an acute angle with the back surface of the panel. Is given. After that, a part of the brim-shaped edge portion of the panel subjected to the acute angle bending is pressed by the above-mentioned pressing device and folded back to about 180 °. By performing this pressing process while changing the processing position along the length direction of the brim-shaped edge portion, hemming processing is performed over the entire brim-shaped edge portion.
  • the accuracy and quality of acute angle bending may become non-uniform, and it may be difficult to maintain the finish of hemming processing at a certain level.
  • An object of the present invention is to provide an acute-angle bending tool for hemming that can appropriately perform acute-angle bending regardless of the skill level of the installer in view of the problems of the prior art.
  • the acute-angle bending tool for hemming of the present invention Type 1 part and The second type part that cooperates with the first type part
  • the second mold portion is provided with a driving means for driving the second mold portion in the forward direction toward the first mold portion and the backward direction toward the first mold portion.
  • the first mold portion includes a plate-shaped portion having a predetermined width and extending in the retracting direction.
  • the plate-shaped part The first surface along the forward and backward directions and The second surface opposite to the first surface and A third surface that connects the first surface and the second surface and faces the backward direction is provided.
  • the second mold portion includes a protruding portion that protrudes onto the second surface when the second mold portion is driven in the forward direction.
  • the protrusion is A fourth surface having a corresponding width in the predetermined width direction and facing the forward direction, It is characterized by including a fifth surface adjacent to the fourth surface and facing the second surface at a predetermined distance when the second mold portion is driven in the forward direction.
  • the flange-shaped edge of the panel is bent at an acute angle to form the flange-shaped edge through the bent portion by bending the edge of the panel into a flange shape on the back surface side of the panel.
  • the protruding portion of the second mold portion protrudes on the second surface of the first mold portion, so that the portion in contact with the third surface of the brim-shaped edge portion is further on the fourth surface of the second mold portion. Is partially bent by being pushed and bent by the fifth surface. At this time, the bent portion forms an acute angle with the back surface of the panel according to the protruding amount of the protruding portion (driving amount of the second mold portion).
  • the brim-shaped edge By performing such partial bending over the entire brim-shaped edge while changing the position along the brim-shaped edge, the brim-shaped edge can be bent at an acute angle. At that time, since the bending amount due to each partial bending is determined by the driving amount of the second mold portion by the driving means, acute angle bending with a uniform bending amount is performed regardless of the skill level of the builder.
  • the acute angle bending tool for hemming By bending the edge of the panel toward the back surface of the panel in a flange shape, a part of the flange-shaped edge formed on the panel via the bent portion is formed at an acute angle with the back surface of the panel. Further, it is an acute-angle bending tool for hemming processing for performing acute-angle bending on the flange-shaped edge portion by performing partial bending along the flange-shaped edge portion while changing the processing position in the processing direction.
  • a first mold portion having a support portion that abuts and supports the portion of the panel to be partially bent from the back surface of the panel to the bent portion.
  • a second mold part for performing the partial bending in cooperation with the first mold part is provided with a driving means for driving the second mold portion in the forward direction toward the first mold portion and the backward direction toward the first mold portion.
  • the second mold portion presses the outside of the brim-shaped edge portion of the panel supported by the first mold portion so that the partial bending is performed. It is characterized by having a pressing surface.
  • the portion of the panel to be partially bent is supported by the first mold portion. Then, by driving the second mold portion in the forward direction by the driving means, the pressing surface of the second mold portion presses the portion of the collar-shaped edge portion to perform the above-mentioned partial bending. By performing this partial bending while changing the processing position in the processing direction along the brim-shaped edge portion, the brim-shaped edge portion is bent at an acute angle.
  • the bending amount of the brim-shaped edge portion (acute angle formed with the back surface of the panel) in each partial bending is determined according to the driving amount in the forward direction of the second mold portion. It can be done properly regardless of the degree.
  • the first mold portion includes a U-shaped portion having a U-shaped cross section perpendicular to the machining direction that extends in the retracting direction.
  • the U-shaped portion includes a first portion which is one portion extending in the retracting direction and a second portion which is the other portion extending in the retracting direction.
  • the first portion constitutes the support portion and constitutes the support portion.
  • the surface of the second portion facing the first portion constitutes a guide surface on the side of the first mold portion that guides the first mold portion and the second mold portion to each other in the forward direction and the backward direction.
  • the cross section perpendicular to the processing direction has a shape that allows the second mold portion to penetrate inside the U-shaped portion when driven in the forward direction. When the second mold portion invades the inside of the U-shaped portion, the surface facing the guide surface on the first mold portion side slides with the guide surface at the time of the invasion to provide mutual guidance. It constitutes a guide surface on the side of the second mold.
  • the guide surface on the side of the first mold portion and the guide surface on the side of the second mold portion guide the first mold portion and the second mold portion to each other in the guide direction without shifting.
  • the bending amount of the brim-shaped edge in each partial bending can be more reliably made constant.
  • the driving means A fixed portion in which the first mold portion is fixed and the second mold portion is movably supported in the forward direction and the backward direction.
  • a first link member whose one end is rotatably connected to the fixed portion around the first rotation shaft. It includes a second link member having one end rotatably connected to the first link member and the other end rotatably connected to the fixing portion.
  • the fixing portion, the first link member, the second link member, and the second mold portion form a link mechanism similar to the crank slider mechanism having four links and one degree of freedom. , Can be easily designed for proper partial bending.
  • the driving means A lever portion that can rotate around the first rotation shaft together with the first link member and rotates the first link member. It is preferable to provide an adjusting means for adjusting the positional relationship between the first link member and the lever portion in the rotational direction.
  • the drive amount of the second mold portion according to the rotation amount of the lever portion can be appropriately set. Can be done.
  • first link member and the lever portion are connected to each other with a play in the rotation direction about the first rotation shaft at a place other than the first rotation shaft. Is preferable.
  • FIG. 1 When the 2nd mold part is driven in the forward direction. It is a bottom view corresponding to FIG. 2 when the second mold part is driven in the forward direction. It is a perspective view which shows the panel which was made acute angle bending by the acute angle bending tool for hemming processing of FIG. It is a perspective view which shows the state that the panel of FIG.
  • the acute-angle bending tool 1 for hemming has a partial bending that bends a part of a flange-shaped flange-shaped edge portion 3 provided on the panel 2. This is for sharply bending the flange-shaped edge portion 3 by changing the machining position in the machining direction M along the flange-shaped edge portion 3. The partial bending is performed by further bending a part of the flange-shaped edge portion 3 at the bent portion 4 so as to form an acute angle with the back surface of the panel 2.
  • the flange-shaped edge portion 3 is a portion previously formed on the panel 2 via the bent portion 4 by bending the edge portion of the panel 2 toward the back surface side of the panel 2 in a flange shape.
  • the bent portion 4 is a portion actually bent at that time.
  • the acute-angled bending tool 1 for hemming processing includes a first mold portion 5 and a second mold portion 6 for performing the partial bending in cooperation with the first mold portion 5.
  • the second mold portion 6 is provided with a driving means 7 for driving the second mold portion 6 in the forward direction F approaching the first mold portion 5 and the backward direction B moving away from the first mold portion 5.
  • the first mold portion 5 has a support portion 8 that abuts and supports the portion of the panel 2 to be partially bent from the back surface of the panel 2 to the bent portion 4.
  • the second mold portion 6 presses the outside of the flange-shaped edge portion 3 of the panel 2 supported by the first mold portion 5 so that the partial bending is performed.
  • a pressing surface 9 is provided.
  • the portion of the brim-shaped edge portion 3 to which partial bending is performed is smoothly formed on the portion. It is chamfered so that it is partially bent.
  • the first mold portion 5 includes a U-shaped portion 10 having a U-shaped cross section perpendicular to the machining direction M that opens and extends in the receding direction B.
  • the U-shaped portion 10 includes a first portion 11 which is one portion extending in the receding direction B and a second portion 12 which is the other portion extending in the receding direction B.
  • the first portion 11 constitutes the above-mentioned support portion 8.
  • the surface of the second portion 12 facing the first portion 11 is a guide surface 13 on the side of the first mold portion 5 that mutually guides the first mold portion 5 and the second mold portion 6 in the forward direction F and the backward direction B.
  • the second mold portion 6 has a shape in which the cross section perpendicular to the machining direction M can penetrate inside the U-shaped portion 10 when the second mold portion 6 is driven in the forward direction F.
  • the second mold portion 6 invades the inside of the U-shaped portion 10, the surface facing the guide surface 13 on the first mold portion 5 side slides with the guide surface 13 at the time of the invasion to guide each other.
  • the guide surface 14 on the side of the second mold portion 6 to be provided is formed.
  • the drive means 7 includes a fixing portion 15 to which the first mold portion 5 is fixed, and a first link member 17 having one end rotatably connected to the fixing portion 15 around the first rotation shaft 16.
  • a second link member 18 having one end rotatably connected to the first link member 17 and the other end rotatably connected to the fixing portion 15 is provided.
  • the fixing portion 15 freely supports the second mold portion 6 in the forward direction F and the backward direction B.
  • the fixing portion 15 includes a handle portion 19, a cylinder portion 20 fixed to the tip of the handle portion 19, and a piston portion 21 supported by the cylinder portion 20 so as to be able to advance and retreat in the forward direction F and the backward direction B.
  • a compression coil spring 22 that urges the piston portion 21 toward the handle portion 19 with respect to the cylinder portion 20 is interposed between the cylinder portion 20 and the piston portion 21.
  • the piston portion 21 has a cylindrical internal space.
  • the mounting portion 23 of the second mold portion 6 is inserted into the internal space with a certain amount of play with the inner wall of the internal space, and the play is allowed by the bolts 24 constituting the first rotation shaft 16. It is attached so that it can make a slight rotation within the range.
  • the first link member 17 has a shape symmetrical with respect to a symmetrical surface 25 perpendicular to the machining direction M and parallel to the forward direction F and the backward direction B.
  • One side and the other side of the first link member 17 with the symmetrical surface 25 interposed therebetween are connected via a connecting portion 26 provided at an end portion of the first link member 17 opposite to the first rotating shaft 16. Will be done.
  • the one side and the other side are rotatably connected to the piston portion 21 and the second mold portion 6 by bolts 24 so as to sandwich the piston portion 21 from both sides.
  • the fixing portion 15, the first link member 17, the second link member 18, and the second mold portion 6 form a link mechanism similar to the crank slider mechanism having 4 links and 1 degree of freedom.
  • the drive means 7 can rotate around the first rotation shaft 16 together with the first link member 17, and has a lever portion 27 for rotating the first link member 17, a first link member 17, and a lever.
  • An adjusting means 28 for adjusting the positional relationship with the portion 27 in the rotation direction is provided.
  • the lever portion 27 has a shape symmetrical with respect to the plane of symmetry 25.
  • first link member 17 and the lever portion 27 are rotated with each other having a play in the rotation direction about the first rotation shaft 16 at a position other than the first rotation shaft 16. It is done by restraining in the direction of movement.
  • This play-related restraint is one of the pin-shaped member 29 passed between one side and the other side of the first link member 17 sandwiching the symmetrical surface 25 and the lever portion 27 sandwiching the symmetrical surface 25. It is secured by an elongated hole 30 provided on one side and the other side and through which the pin-shaped member 29 penetrates. That is, the elongated hole 30 has a length corresponding to the play in the rotation direction about the first rotation shaft 16.
  • the fixing portion 15 includes an arch-shaped member 31 for fixing the first mold portion 5 to the fixing portion 15.
  • the arch-shaped member 31 has a symmetrical shape with the symmetrical surface 25 in between, and extends from the base end side to the tip end side along the symmetrical surface 25.
  • the base end portion of the arch-shaped member 31 is fixed to the outer surface of the cylinder portion 20.
  • the first mold portion 5 is fixed to the tip portion of the arch-shaped member 31.
  • the second link member 18 is composed of two plate-shaped members.
  • the connection of the second link member 18 to the first link member 17 and the fixing portion 15 is carried out by means of bolts 32a and 32b penetrating the intermediate portion of the first link member 17 and the base end portion of the arched member 31, respectively. This is done by connecting two plate-shaped members to the intermediate portion and the base end portion. At the time of this connection, the two plate-shaped members are provided on both sides of the intermediate portion and the proximal end portion so as to sandwich the intermediate portion and the proximal end portion.
  • the adjusting means 28 includes a screw hole 33 provided in the connecting portion 26 of the first link member 17, and an adjusting screw 35 screwed into the screw hole 33 through the through hole 34 provided in the lever connecting portion 27a. ..
  • An adjustment knob 36 is provided at the end of the adjustment screw 35 on the side opposite to the screw hole 33.
  • a compression coil spring 37 is provided between the knob 36 of the adjusting screw 35 and the connecting portion 26.
  • a compression coil spring 38 is provided between the lever connecting portion 27a and the connecting portion 26 of the first link member 17.
  • the adjusting screw 35 is attached to the base end portion of the arch-shaped member 31 in the second mold portion 6. It is driven in the forward direction F until it abuts.
  • the adjusting means 28 by turning the knob 36 to reduce the amount of protrusion of the adjusting screw 35 from the screw hole 33, the rotation direction of the first link member 17 and the lever portion 27 The positional relationship can be adjusted so that the second mold portion 6 can be driven to the position closest to the first mold portion 5. Further, by increasing the amount of protrusion of the adjusting screw 35 from the screw hole 33, it is possible to adjust so that the second mold portion 6 can be driven to the position farthest from the first mold portion 5.
  • the first mold portion 5 includes a plate-shaped portion 41 having a predetermined width W and extending in the receding direction B. ..
  • the plate-shaped portion 41 retreats by connecting the first surface 42 along the forward direction F and the retreat direction B, the second surface 43 opposite to the first surface 42, and the first surface 42 and the second surface 43. It is provided with a third surface 44 facing the direction B.
  • the plate-shaped portion 41 corresponds to the above-mentioned first portion 11.
  • the second mold portion 6 includes a protruding portion 45 that protrudes on the second surface 43 of the plate-shaped portion 41 when the second mold portion 6 is driven in the forward direction F.
  • the protruding portion 45 has a width corresponding to the predetermined width W described above and is adjacent to the fourth surface 46 facing the forward direction F and the fourth surface 46, and the second mold portion 6 is in the forward direction F. It includes a second surface 43 and a fifth surface 47 facing each other with a predetermined distance when driven.
  • the fourth surface 46 and the fifth surface 47 form the above-mentioned pressing surface 9.
  • the first mold portion 5 when performing an acute angle bending on the brim-shaped edge portion 3 of the panel 2, the first mold portion 5 first supports the portion of the panel 2 to be partially bent. Then, by grasping and tightening the lever portion 27 and the handle portion 19 with one hand, the second mold portion 6 is driven in the forward direction F via the driving means 7. As a result, the pressing surface 9 of the second mold portion 6 presses the portion of the flange-shaped edge portion 3, and the portion is further bent at the bent portion 4 so that the portion forms an acute angle with the back surface of the panel 2. Perform partial bending. The situation at this time is shown in FIGS. 4 and 5. The bending amount in this partial bending can be adjusted by operating the knob 36 of the adjusting screw 35.
  • the brim-shaped edge portion 3 can be bent at an acute angle. At this time, it is preferable to repeat the acute-angled bending while increasing the bending amount of the partial bending in several steps by the knob 36.
  • acute angle bending is performed by partial bending in which the acute angle formed by the brim-shaped edge portion 3 and the back surface of the panel 2 is a large angle.
  • the acute-angled bending at the desired angle can be achieved with high quality. This facilitates the subsequent pressing process for joining the collar-shaped edge portion 3 to the back surface of the panel 2.
  • the acute angle bending is performed by sandwiching another panel 40 to be joined to the panel 2 between the panel 2 and the first portion 11 of the first mold portion 5, so that the curvature at the bent portion 4 is joined.
  • the pressing device 39 as shown in FIG. 7 is used for the panel 2 in which the acute angle formed by the back surface of the panel 2 and the brim-shaped edge portion 3 is set to ⁇ by the acute angle bending described above.
  • the hemming process can be completed (see JP-A-2018-061981).
  • an adhesive is arranged on the back surface of the panel 2 and between the brim-shaped edge 3 and the other panel 40.
  • the tip of the third surface 44 (see FIG. 9) of the first mold portion 5 has an R shape, and is shown in FIG. 8 by performing pressing processing using the pressing device 39 after pre-folding (sharp bending). As shown, it is possible to finish the tip shape of the panel 2 after the hemming process into a spherical shape (R shape).
  • the bending amount of the flange-shaped edge portion 3 in each partial bending is determined according to the driving amount of the second mold portion 6 in the forward direction F set by the adjusting means 28. Therefore, sharp bending can be appropriately performed regardless of the skill level of the builder.
  • the guide surface 13 on the side of the first mold portion 5 and the guide surface 14 on the side of the second mold portion 6 guide the first mold portion 5 and the second mold portion 6 without shifting in the guide direction.
  • the bending amount of the brim-shaped edge portion 3 in each partial bending can be more reliably made constant.
  • the fixing portion 15, the first link member 17, the second link member 18, and the second mold portion 6 form a link mechanism similar to the crank slider mechanism having 4 links and 1 degree of freedom, the driving means 7 Can be easily designed for proper partial bending.
  • the drive amount of the second mold portion 6 according to the rotation amount of the lever portion 27 is appropriately set. can do.
  • first link member 17 and the lever portion 27 are connected with a play in the rotation direction, the manufacturing error of each portion is absorbed and the second mold portion 6 is connected to the first mold portion 5. On the other hand, it can be driven in the forward direction F and the backward direction B without any trouble. Further, even in this case, since the guide surfaces 13 and 14 described above are provided, the accuracy of partial bending and acute angle bending can be maintained high.
  • the present invention is not limited to this, and can be appropriately modified and implemented.
  • the lever portion 27 and the handle portion 19 may be oriented in a direction perpendicular to the plane of symmetry 25 so that these gripping operations can be performed in a posture more suitable for the work.
  • a driving means suitable for the orientation of the lever portion 27 and the handle portion 19 may be further adopted.
  • Symmetrical plane, 26 ... Connecting part, 27 ... Lever part, 27a ... Lever connecting part, 28 ... Adjusting means, 29 ... Pin-shaped member, 30 ... Long hole, 31 ... Arch-shaped member, 32a, 32b ... Bolt, 33 ... Screw hole, 34 ... Through hole, 35 ... Adjusting screw, 36 ... Knob, 37, 38 ... Compression coil spring, 39 ... Pressing device, 40 ... Other panel, 41 ... Plate-shaped part, 42 ... 1st surface, 43 ... 2nd surface, 44 ... 3rd surface , 45 ... Projection, 46 ... 4th surface, 47 ... 5th surface.

Abstract

An acute-angle bending tool 1 for hemming performs sectional bending, in which a portion of a flanged rim 3 formed in a sheet 2 via a bend 4 is folded so as to form an acute angle with the reverse side of the sheet 2, while shifting the processing position along the flanged rim 3, thereby performing acute-angle bending on the flanged rim 3. The tool is provided with a first die 5 having a support section 8 that supports the sheet 2 across the reverse side up along the bend 4, and a drive means 7 for driving a second die 6 in an advancing direction F and a retreating direction B with respect to the first die 5. The second die is provided with a pressing face that presses, when the die is driven in the advancing direction F, the outer side of the portion of the flanged-rim 3 of the sheet 2 supported on the first die 5, whereby sectional bending is carried out.

Description

ヘミング加工用鋭角曲げ具Sharp bending tool for hemming
　本発明は、パネルにヘミング加工を施すに当たり、パネルにフランジ状に設けられた鍔状縁部に鋭角曲げを施すためのヘミング加工用鋭角曲げ具に関する。 The present invention relates to an acute-angle bending tool for hemming for performing an acute-angled bending on a flange-shaped edge portion provided on the panel in a flange shape when the panel is hemmed.
　従来、車両のインナパネルにアウタパネルを接合させる方法として、ヘミング加工を利用した接合方法が知られている。この接合方法は、車両の軽量化に適しているので、近年多く用いられるようになってきている。 Conventionally, as a method of joining the outer panel to the inner panel of a vehicle, a joining method using hemming processing is known. Since this joining method is suitable for reducing the weight of a vehicle, it has been widely used in recent years.
　このようなヘミング加工を用いて接合されたアウタパネルを交換して修理する際には、再度、ヘミング加工を行ってインナパネルとアウタパネルを接合させる必要がある。このような修理時のヘミング加工に用いられる装置として、例えば、特許文献１に記載されたようなヘミング加工用の押圧装置が知られている。 When replacing and repairing the outer panel joined by using such hemming, it is necessary to perform hemming again to join the inner panel and the outer panel. As an apparatus used for hemming processing at the time of such repair, for example, a pressing device for hemming processing as described in Patent Document 1 is known.
　このような押圧装置を用いてヘミング加工を行う際には、予め、パネルの端縁をフランジ状に折り曲げて形成された鍔状縁部を、パネルの裏面と鋭角を成すようにさらに折り曲げる鋭角曲げが施される。その後、鋭角曲げが施されたパネルの鍔状縁部の一部が上記の押圧装置を用いて押圧されて、ほぼ１８０°まで折り返される。この押圧加工を、鍔状縁部の長さ方向に沿って加工位置を変えながら行うことにより、鍔状縁部の全体にわたってヘミング加工が施される。 When performing hemming using such a pressing device, a sharp-angle bending is performed by further bending a flange-shaped edge portion formed by bending the edge of the panel into a flange shape in advance so as to form an acute angle with the back surface of the panel. Is given. After that, a part of the brim-shaped edge portion of the panel subjected to the acute angle bending is pressed by the above-mentioned pressing device and folded back to about 180 °. By performing this pressing process while changing the processing position along the length direction of the brim-shaped edge portion, hemming processing is performed over the entire brim-shaped edge portion.
特開２０１８－０６１９８１号公報Japanese Unexamined Patent Publication No. 2018-061981
　しかしながら、上記の特許文献１の押圧装置によれば、上述のように、押圧加工を開始する前に予め上記の鋭角曲げを施す必要がある。この鋭角曲げは、従来、上記のようにアウタパネルを交換して修理する場合のヘミング加工に際しては、プラスチックハンマ等で軽く叩くことにより行われる。 However, according to the pressing device of Patent Document 1 described above, as described above, it is necessary to perform the acute angle bending described above in advance before starting the pressing process. Conventionally, this acute angle bending is performed by tapping lightly with a plastic hammer or the like in the hemming process when the outer panel is replaced and repaired as described above.
　このため、施工者の熟練度によっては、鋭角曲げの精度や品位が不均一となり、ヘミング加工の仕上りを一定の水準に維持するのが困難となるおそれがある。 Therefore, depending on the skill level of the builder, the accuracy and quality of acute angle bending may become non-uniform, and it may be difficult to maintain the finish of hemming processing at a certain level.
　本発明の目的は、かかる従来技術の問題点に鑑み、鋭角曲げを施工者の熟練度に関係なく適切に行えるヘミング加工用鋭角曲げ具を提供することにある。 An object of the present invention is to provide an acute-angle bending tool for hemming that can appropriately perform acute-angle bending regardless of the skill level of the installer in view of the problems of the prior art.
　本発明のヘミング加工用鋭角曲げ具は、
　第１型部と、
　前記第１型部と協働する第２型部と、
　前記第２型部を、前記第１型部に近づく前進方向及び遠ざかる後退方向に駆動する駆動手段とを備え、
　前記第１型部は、所定幅を有して前記後退方向に延びた板状部を備え、
　前記板状部は、
　前記前進方向及び後退方向に沿った第１面と、
　前記第１面と反対側の第２面と、
　前記第１面及び前記第２面を接続して前記後退方向に向いた第３面とを備え、
　前記第２型部は、該第２型部が前記前進方向に駆動されたときに前記第２面上に突出する突出部を備え、
　前記突出部は、
　前記所定幅の方向において対応する幅を有して前記前進方向に向いた第４面と、
　前記第４面に隣接し、前記第２型部が前記前進方向に駆動されるときに前記第２面と所定の間隔を有して対向する第５面とを備えることを特徴とする。 The acute-angle bending tool for hemming of the present invention
Type 1 part and
The second type part that cooperates with the first type part,
The second mold portion is provided with a driving means for driving the second mold portion in the forward direction toward the first mold portion and the backward direction toward the first mold portion.
The first mold portion includes a plate-shaped portion having a predetermined width and extending in the retracting direction.
The plate-shaped part
The first surface along the forward and backward directions and
The second surface opposite to the first surface and
A third surface that connects the first surface and the second surface and faces the backward direction is provided.
The second mold portion includes a protruding portion that protrudes onto the second surface when the second mold portion is driven in the forward direction.
The protrusion is
A fourth surface having a corresponding width in the predetermined width direction and facing the forward direction,
It is characterized by including a fifth surface adjacent to the fourth surface and facing the second surface at a predetermined distance when the second mold portion is driven in the forward direction.
　本発明によれば、パネルの端縁を該パネルの裏面側にフランジ状に折り曲げることにより曲折部を介して鍔状縁部が形成された該パネルについて、鍔状縁部に鋭角曲げを施すことができる。すなわち、ヘミング加工用鋭角曲げ具により鋭角曲げを行う際には、まず、パネルの裏面及び鍔状縁部をそれぞれ第１型部の第１面及び第３面に当接させ、駆動手段により第２型部を前進方向に駆動する。 According to the present invention, the flange-shaped edge of the panel is bent at an acute angle to form the flange-shaped edge through the bent portion by bending the edge of the panel into a flange shape on the back surface side of the panel. Can be done. That is, when performing acute angle bending with an acute angle bending tool for hemming processing, first, the back surface of the panel and the brim-shaped edge portion are brought into contact with the first surface and the third surface of the first mold portion, respectively, and the driving means is used. 2 Drive the mold part in the forward direction.
　これにより、第２型部の突出部が第１型部の第２面上に突出するので、鍔状縁部の第３面に当接している部分が、第２型部の第４面さらには第５面により押されて折り曲げられる部分曲げが行われる。このとき、折り曲げられた部分は、パネルの裏面との間で、突出部の突出量（第２型部の駆動量）に応じた鋭角を成す。 As a result, the protruding portion of the second mold portion protrudes on the second surface of the first mold portion, so that the portion in contact with the third surface of the brim-shaped edge portion is further on the fourth surface of the second mold portion. Is partially bent by being pushed and bent by the fifth surface. At this time, the bent portion forms an acute angle with the back surface of the panel according to the protruding amount of the protruding portion (driving amount of the second mold portion).
　このような部分曲げを、鍔状縁部に沿って位置を変えながら鍔状縁部全体にわたって行うことにより、鍔状縁部に鋭角曲げを施すことができる。その際に、各部分曲げによる曲げ量は、駆動手段による第２型部の駆動量によって決まるので、施工者の熟練度に拘わらず、曲げ量が均一な鋭角曲げが行われる。 By performing such partial bending over the entire brim-shaped edge while changing the position along the brim-shaped edge, the brim-shaped edge can be bent at an acute angle. At that time, since the bending amount due to each partial bending is determined by the driving amount of the second mold portion by the driving means, acute angle bending with a uniform bending amount is performed regardless of the skill level of the builder.
　別の側面に係る本発明のヘミング加工用鋭角曲げ具は、
　パネルの端縁を該パネルの裏面側にフランジ状に折り曲げることにより曲折部を介して該パネルに形成された鍔状縁部の一部を該一部が該パネルの裏面と鋭角を成すようにさらに折り曲げる部分曲げを、該鍔状縁部に沿った加工方向に加工位置を変えながら行うことにより該鍔状縁部に鋭角曲げを施すためのヘミング加工用鋭角曲げ具であって、
　前記パネルの前記部分曲げを行う部分を、該パネルの裏面から前記曲折部にかけて当接して支持する支持部を有する第１型部と、
　前記第１型部と協働して前記部分曲げを行うための第２型部と、
　前記第２型部を、前記第１型部に対して近づく前進方向及び遠ざかる後退方向に駆動する駆動手段とを備え、
　前記第２型部は、前記前進方向に駆動される際に、前記第１型部により支持された前記パネルの前記鍔状縁部の部分の外側を、前記部分曲げが行われるように押圧する押圧面を備えることを特徴とする。 The acute angle bending tool for hemming according to another aspect of the present invention
By bending the edge of the panel toward the back surface of the panel in a flange shape, a part of the flange-shaped edge formed on the panel via the bent portion is formed at an acute angle with the back surface of the panel. Further, it is an acute-angle bending tool for hemming processing for performing acute-angle bending on the flange-shaped edge portion by performing partial bending along the flange-shaped edge portion while changing the processing position in the processing direction.
A first mold portion having a support portion that abuts and supports the portion of the panel to be partially bent from the back surface of the panel to the bent portion.
A second mold part for performing the partial bending in cooperation with the first mold part,
The second mold portion is provided with a driving means for driving the second mold portion in the forward direction toward the first mold portion and the backward direction toward the first mold portion.
When driven in the forward direction, the second mold portion presses the outside of the brim-shaped edge portion of the panel supported by the first mold portion so that the partial bending is performed. It is characterized by having a pressing surface.
　本発明において、パネルに曲折部を介して設けられた鍔状縁部に鋭角曲げを施す際には、第１型部により、パネルの部分曲げを行う部分が支持される。そして、駆動手段で第２型部を前進方向に駆動させることにより、第２型部の押圧面が鍔状縁部の当該部分を押圧して上述の部分曲げが行われる。この部分曲げを、鍔状縁部に沿った加工方向に加工位置を変えながら行うことにより、該鍔状縁部に鋭角曲げが施される。 In the present invention, when the brim-shaped edge portion provided on the panel via the bent portion is bent at an acute angle, the portion of the panel to be partially bent is supported by the first mold portion. Then, by driving the second mold portion in the forward direction by the driving means, the pressing surface of the second mold portion presses the portion of the collar-shaped edge portion to perform the above-mentioned partial bending. By performing this partial bending while changing the processing position in the processing direction along the brim-shaped edge portion, the brim-shaped edge portion is bent at an acute angle.
　これによれば、第２型部の前進方向への駆動量に応じて、各部分曲げにおける鍔状縁部の曲げ量（パネルの裏面となす鋭角）が決まるので、鋭角曲げを施工者の熟練度に関係なく適切に行うことができる。 According to this, the bending amount of the brim-shaped edge portion (acute angle formed with the back surface of the panel) in each partial bending is determined according to the driving amount in the forward direction of the second mold portion. It can be done properly regardless of the degree.
　より好ましい態様においては、
　前記第１型部は、前記加工方向に垂直な断面が前記後退方向に開いて延びたＵ字状であるＵ字状部分を備え、
　前記Ｕ字状部分は、前記後退方向に延びた一方の部分である第１部分と、該後退方向に延びた他方の部分である第２部分とを備え、
　前記第１部分は、前記支持部を構成し、
　前記第２部分の前記第１部分に対向する面は、前記第１型部及び前記第２型部を相互に前記前進方向及び前記後退方向に案内する該第１型部側の案内面を構成し、
　前記第２型部は、
　前記加工方向に垂直な断面が、該第２型部が前記前進方向に駆動されるときに前記Ｕ字状部分の内側に侵入可能な形状を有し、
　該第２型部が前記Ｕ字状部分の内側に侵入するときに前記第１型部側の案内面に対向する面が、該進入時に該案内面と摺動して前記相互の案内に供される該第２型部側の案内面を構成する。 In a more preferred embodiment
The first mold portion includes a U-shaped portion having a U-shaped cross section perpendicular to the machining direction that extends in the retracting direction.
The U-shaped portion includes a first portion which is one portion extending in the retracting direction and a second portion which is the other portion extending in the retracting direction.
The first portion constitutes the support portion and constitutes the support portion.
The surface of the second portion facing the first portion constitutes a guide surface on the side of the first mold portion that guides the first mold portion and the second mold portion to each other in the forward direction and the backward direction. And
The second type part
The cross section perpendicular to the processing direction has a shape that allows the second mold portion to penetrate inside the U-shaped portion when driven in the forward direction.
When the second mold portion invades the inside of the U-shaped portion, the surface facing the guide surface on the first mold portion side slides with the guide surface at the time of the invasion to provide mutual guidance. It constitutes a guide surface on the side of the second mold.
　この態様によれば、第１型部側の案内面と第２型部側の案内面とによって、第１型部及び第２型部が相互に案内方向に、ずれることなく案内されるので、各部分曲げにおける鍔状縁部の曲げ量をより確実に一定化することができる。 According to this aspect, the guide surface on the side of the first mold portion and the guide surface on the side of the second mold portion guide the first mold portion and the second mold portion to each other in the guide direction without shifting. The bending amount of the brim-shaped edge in each partial bending can be more reliably made constant.
　さらに好ましい態様においては、
　前記駆動手段は、
　前記第１型部が固定され、かつ前記第２型部を前記前進方向及び前記後退方向に進退自在に支持する固定部と、
　前記固定部に対して、一端が第１回動軸の周りで回動自在に接続された第１リンク部材と、
　前記第１リンク部材に一端が回動自在に接続され、他端が前記固定部に回動自在に接続された第２リンク部材とを備える。 In a more preferred embodiment
The driving means
A fixed portion in which the first mold portion is fixed and the second mold portion is movably supported in the forward direction and the backward direction.
A first link member whose one end is rotatably connected to the fixed portion around the first rotation shaft.
It includes a second link member having one end rotatably connected to the first link member and the other end rotatably connected to the fixing portion.
　この態様によれば、固定部、第１リンク部材、第２リンク部材、及び第２型部は、４リンク・１自由度のクランク・スライダー機構に類似したリンク機構を構成するので、駆動手段を、適切な部分曲げが行われるように容易に設計することができる。 According to this aspect, the fixing portion, the first link member, the second link member, and the second mold portion form a link mechanism similar to the crank slider mechanism having four links and one degree of freedom. , Can be easily designed for proper partial bending.
　この場合、
　前記駆動手段は、
　前記第１リンク部材とともに前記第１回動軸の周りで回動可能で、前記第１リンク部材を回動させるためのレバー部と、
　前記第１リンク部材と前記レバー部との回動方向の位置関係を調整するための調整手段とを備えるのが好ましい。 in this case,
The driving means
A lever portion that can rotate around the first rotation shaft together with the first link member and rotates the first link member.
It is preferable to provide an adjusting means for adjusting the positional relationship between the first link member and the lever portion in the rotational direction.
　これによれば、調整手段で第１リンク部材とレバー部との回動方向の位置関係を調整することにより、レバー部の回動量に応じた第２型部の駆動量を適切に設定することができる。 According to this, by adjusting the positional relationship between the first link member and the lever portion in the rotation direction by the adjusting means, the drive amount of the second mold portion according to the rotation amount of the lever portion can be appropriately set. Can be done.
　この場合、前記第１リンク部材と前記レバー部とは、前記第１回動軸以外の箇所で、相互に該第１回動軸を中心とする回動方向の遊びを有して連結されるのが好ましい。 In this case, the first link member and the lever portion are connected to each other with a play in the rotation direction about the first rotation shaft at a place other than the first rotation shaft. Is preferable.
　これによれば、各部の製造誤差を吸収して、第２型部を、第１型部に対して支障なく前進方向及び後退方向に駆動することができる。また、この場合でも、上述の案内面を有する場合には、部分曲げや鋭角曲げの精度を高く維持することができる。 According to this, it is possible to absorb the manufacturing error of each part and drive the second mold part in the forward direction and the backward direction without any trouble with respect to the first mold part. Further, even in this case, when the above-mentioned guide surface is provided, the accuracy of partial bending and acute angle bending can be maintained high.
本発明の一実施形態に係るヘミング加工用鋭角曲げ具の、一部を断面で表した側断面図である。It is a side sectional view showing a part of the acute angle bending tool for hemming processing which concerns on one Embodiment of this invention. 該ヘミング加工用鋭角曲げ具の第１型部及び第２型部の下面図である。It is a bottom view of the 1st mold part and the 2nd mold part of the acute angle bending tool for hemming processing. 図１のヘミング加工用鋭角曲げ具の斜視図である。It is a perspective view of the acute angle bending tool for hemming processing of FIG. 第２型部を前進方向に駆動した場合の図１に対応する側断面図である。It is a side sectional view corresponding to FIG. 1 when the 2nd mold part is driven in the forward direction. 第２型部を前進方向に駆動した場合の図２に対応する下面図である。It is a bottom view corresponding to FIG. 2 when the second mold part is driven in the forward direction. 図１のヘミング加工用鋭角曲げ具により鋭角曲げが施されたパネルを示す斜視図である。It is a perspective view which shows the panel which was made acute angle bending by the acute angle bending tool for hemming processing of FIG. 図６のパネルに押圧加工を施している様子を示す斜視図である。It is a perspective view which shows the state that the panel of FIG. 6 is pressed. ヘミング加工が完了したパネルの断面図である。It is sectional drawing of the panel which completed the hemming process. 図２の第１型部及び第２型部の斜視図である。It is a perspective view of the 1st mold part and the 2nd mold part of FIG. 図９の第１型部及び第２型部を別の角度から見た斜視図である。9 is a perspective view of the first mold portion and the second mold portion of FIG. 9 as viewed from different angles.
　以下、図面を用いて本発明の実施形態を説明する。図１及び図２に示すように、本発明の一実施形態に係るヘミング加工用鋭角曲げ具１は、パネル２に設けられたフランジ状の鍔状縁部３の一部を曲げる部分曲げを、鍔状縁部３に沿った加工方向Ｍに加工位置を変えながら行うことにより、鍔状縁部３に鋭角曲げを施すためのものである。部分曲げは、当該鍔状縁部３の一部をパネル２の裏面と鋭角を成すように曲折部４でさらに曲げることにより行われる。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the acute-angle bending tool 1 for hemming according to an embodiment of the present invention has a partial bending that bends a part of a flange-shaped flange-shaped edge portion 3 provided on the panel 2. This is for sharply bending the flange-shaped edge portion 3 by changing the machining position in the machining direction M along the flange-shaped edge portion 3. The partial bending is performed by further bending a part of the flange-shaped edge portion 3 at the bent portion 4 so as to form an acute angle with the back surface of the panel 2.
　鍔状縁部３は、パネル２の端縁をパネル２の裏面側にフランジ状に曲げることによって、曲折部４を介してパネル２に予め形成された部分である。曲折部４は、その際に実際に曲げられた部分である。 The flange-shaped edge portion 3 is a portion previously formed on the panel 2 via the bent portion 4 by bending the edge portion of the panel 2 toward the back surface side of the panel 2 in a flange shape. The bent portion 4 is a portion actually bent at that time.
　図１～図３に示すように、ヘミング加工用鋭角曲げ具１は、第１型部５と、第１型部５と協働して前記部分曲げを行うための第２型部６と、第２型部６を、第１型部５に対して近づく前進方向Ｆ及び遠ざかる後退方向Ｂに駆動する駆動手段７とを備える。 As shown in FIGS. 1 to 3, the acute-angled bending tool 1 for hemming processing includes a first mold portion 5 and a second mold portion 6 for performing the partial bending in cooperation with the first mold portion 5. The second mold portion 6 is provided with a driving means 7 for driving the second mold portion 6 in the forward direction F approaching the first mold portion 5 and the backward direction B moving away from the first mold portion 5.
　第１型部５は、パネル２の前記部分曲げを行う部分を、パネル２の裏面から曲折部４にかけて当接して支持する支持部８を有する。第２型部６は、前進方向Ｆに駆動される際に、第１型部５により支持されたパネル２の鍔状縁部３の部分の外側を、前記部分曲げが行われるように押圧する押圧面９を備える。 The first mold portion 5 has a support portion 8 that abuts and supports the portion of the panel 2 to be partially bent from the back surface of the panel 2 to the bent portion 4. When driven in the forward direction F, the second mold portion 6 presses the outside of the flange-shaped edge portion 3 of the panel 2 supported by the first mold portion 5 so that the partial bending is performed. A pressing surface 9 is provided.
　押圧面９の加工方向Ｍにおける両側の部分から第１型部５における支持部８に対峙する部分にかけて、部分曲げがなされる鍔状縁部３の部分に傷をつけることなく滑らかに該部分に部分曲げがなされるように、面取りがなされている。 From both side portions of the pressing surface 9 in the processing direction M to the portion of the first mold portion 5 facing the support portion 8, the portion of the brim-shaped edge portion 3 to which partial bending is performed is smoothly formed on the portion. It is chamfered so that it is partially bent.
　第１型部５は、加工方向Ｍに垂直な断面が、後退方向Ｂに開いて延びたＵ字状であるＵ字状部分１０を備える。Ｕ字状部分１０は、後退方向Ｂに延びた一方の部分である第１部分１１と、後退方向Ｂに延びた他方の部分である第２部分１２とを備える。第１部分１１は、上述の支持部８を構成する。第２部分１２の第１部分１１に対向する面は、第１型部５及び第２型部６を前進方向Ｆ及び後退方向Ｂに相互に案内する第１型部５側の案内面１３を構成する。 The first mold portion 5 includes a U-shaped portion 10 having a U-shaped cross section perpendicular to the machining direction M that opens and extends in the receding direction B. The U-shaped portion 10 includes a first portion 11 which is one portion extending in the receding direction B and a second portion 12 which is the other portion extending in the receding direction B. The first portion 11 constitutes the above-mentioned support portion 8. The surface of the second portion 12 facing the first portion 11 is a guide surface 13 on the side of the first mold portion 5 that mutually guides the first mold portion 5 and the second mold portion 6 in the forward direction F and the backward direction B. Configure.
　第２型部６は、加工方向Ｍに垂直な断面が、第２型部６が前進方向Ｆに駆動されるときにＵ字状部分１０の内側に侵入可能な形状を有する。第２型部６がＵ字状部分１０の内側に侵入するときに第１型部５側の案内面１３に対向する面が、該進入時に案内面１３と摺動して前記相互の案内に供される第２型部６側の案内面１４を構成する。 The second mold portion 6 has a shape in which the cross section perpendicular to the machining direction M can penetrate inside the U-shaped portion 10 when the second mold portion 6 is driven in the forward direction F. When the second mold portion 6 invades the inside of the U-shaped portion 10, the surface facing the guide surface 13 on the first mold portion 5 side slides with the guide surface 13 at the time of the invasion to guide each other. The guide surface 14 on the side of the second mold portion 6 to be provided is formed.
　駆動手段７は、第１型部５が固定された固定部１５と、固定部１５に対して、一端が第１回動軸１６の周りで回動自在に接続された第１リンク部材１７と、第１リンク部材１７に一端が回動自在に接続され、他端が固定部１５に回動自在に接続された第２リンク部材１８とを備える。固定部１５は、第２型部６を前進方向Ｆ及び後退方向Ｂに進退自在に支持する。 The drive means 7 includes a fixing portion 15 to which the first mold portion 5 is fixed, and a first link member 17 having one end rotatably connected to the fixing portion 15 around the first rotation shaft 16. A second link member 18 having one end rotatably connected to the first link member 17 and the other end rotatably connected to the fixing portion 15 is provided. The fixing portion 15 freely supports the second mold portion 6 in the forward direction F and the backward direction B.
　固定部１５は、柄部１９と、柄部１９の先端に固定されたシリンダ部２０と、シリンダ部２０により前進方向Ｆ及び後退方向Ｂに進退自在に支持されたピストン部２１とを備える。シリンダ部２０とピストン部２１との間には、シリンダ部２０に対してピストン部２１を柄部１９側に付勢する圧縮コイルばね２２が介在する。 The fixing portion 15 includes a handle portion 19, a cylinder portion 20 fixed to the tip of the handle portion 19, and a piston portion 21 supported by the cylinder portion 20 so as to be able to advance and retreat in the forward direction F and the backward direction B. A compression coil spring 22 that urges the piston portion 21 toward the handle portion 19 with respect to the cylinder portion 20 is interposed between the cylinder portion 20 and the piston portion 21.
　ピストン部２１は、円筒状の内部空間を有する。この内部空間に第２型部６の取付部２３が該内部空間の内壁との間である程度の遊びを有して挿入され、第１回動軸１６を構成するボルト２４により、該遊びの許容する範囲内で微回動し得るように取り付けられる。 The piston portion 21 has a cylindrical internal space. The mounting portion 23 of the second mold portion 6 is inserted into the internal space with a certain amount of play with the inner wall of the internal space, and the play is allowed by the bolts 24 constituting the first rotation shaft 16. It is attached so that it can make a slight rotation within the range.
　第１リンク部材１７は、加工方向Ｍに垂直で、前進方向Ｆ及び後退方向Ｂに平行な対称面２５について対称的な形状を有する。第１リンク部材１７の対称面２５を挟んだ一方の側及び他方の側は、第１リンク部材１７の第１回動軸１６と反対側の端部に設けられた連結部２６を介して連結される。また、当該一方の側及び他方の側は、ピストン部２１を両側から挟むようにして、ボルト２４により、第１回動軸１６の周りで回動自在にピストン部２１及び第２型部６に連結される。 The first link member 17 has a shape symmetrical with respect to a symmetrical surface 25 perpendicular to the machining direction M and parallel to the forward direction F and the backward direction B. One side and the other side of the first link member 17 with the symmetrical surface 25 interposed therebetween are connected via a connecting portion 26 provided at an end portion of the first link member 17 opposite to the first rotating shaft 16. Will be done. Further, the one side and the other side are rotatably connected to the piston portion 21 and the second mold portion 6 by bolts 24 so as to sandwich the piston portion 21 from both sides. To.
　したがって、固定部１５、第１リンク部材１７、第２リンク部材１８、及び第２型部６は、４リンク・１自由度のクランク・スライダー機構に類似するリンク機構を構成している。 Therefore, the fixing portion 15, the first link member 17, the second link member 18, and the second mold portion 6 form a link mechanism similar to the crank slider mechanism having 4 links and 1 degree of freedom.
　また、駆動手段７は、第１リンク部材１７とともに第１回動軸１６の周りで回動可能で、第１リンク部材１７を回動させるためのレバー部２７と、第１リンク部材１７とレバー部２７との回動方向の位置関係を調整するための調整手段２８とを備える。レバー部２７は、対称面２５について対称な形状を有する。 Further, the drive means 7 can rotate around the first rotation shaft 16 together with the first link member 17, and has a lever portion 27 for rotating the first link member 17, a first link member 17, and a lever. An adjusting means 28 for adjusting the positional relationship with the portion 27 in the rotation direction is provided. The lever portion 27 has a shape symmetrical with respect to the plane of symmetry 25.
　レバー部２７の対称面２５を挟んだ一方の側及び他方の側は、レバー部２７を回動させるために把持される、第１回動軸１６側と反対側の部分においてレバー連結部２７ａを介して連結される。また、当該一方の側及び他方の側は、第１リンク部材１７を両側から挟むようにして、ボルト２４により、第１回動軸１６の周りで回動自在にピストン部２１及び第２型部６に連結されるとともに、第１リンク部材１７に取り付けられる。 One side and the other side of the lever portion 27 sandwiching the symmetrical surface 25 hold the lever connecting portion 27a at a portion opposite to the first rotating shaft 16 side, which is gripped for rotating the lever portion 27. Connected through. Further, the one side and the other side are rotatably connected to the piston portion 21 and the second mold portion 6 by the bolt 24 so as to sandwich the first link member 17 from both sides. It is connected and attached to the first link member 17.
　この取付けは、第１リンク部材１７とレバー部２７とを、第１回動軸１６以外の箇所で、相互に、第１回動軸１６を中心とする回動方向の遊びを有して回動方向に拘束することにより行われる。 In this mounting, the first link member 17 and the lever portion 27 are rotated with each other having a play in the rotation direction about the first rotation shaft 16 at a position other than the first rotation shaft 16. It is done by restraining in the direction of movement.
　この遊びを伴う拘束は、第１リンク部材１７の対称面２５を挟んだ一方の側及び他方の側の間に渡されたピン状部材２９と、レバー部２７の対称面２５を挟んだ一方の側及び他方の側に設けられ、ピン状部材２９が貫通している長孔３０とによって担保される。すなわち、長孔３０は、第１回動軸１６を中心とする回動方向に当該遊びに対応した長さを有する。 This play-related restraint is one of the pin-shaped member 29 passed between one side and the other side of the first link member 17 sandwiching the symmetrical surface 25 and the lever portion 27 sandwiching the symmetrical surface 25. It is secured by an elongated hole 30 provided on one side and the other side and through which the pin-shaped member 29 penetrates. That is, the elongated hole 30 has a length corresponding to the play in the rotation direction about the first rotation shaft 16.
　また、固定部１５は、第１型部５を固定部１５に固定するためのアーチ状部材３１を備える。アーチ状部材３１は、対称面２５を挟んで対称な形状を有し、対称面２５に沿って基端部側から先端部側に延びている。アーチ状部材３１の基端部は、シリンダ部２０の外面に固定される。アーチ状部材３１の先端部に、第１型部５が固定される。 Further, the fixing portion 15 includes an arch-shaped member 31 for fixing the first mold portion 5 to the fixing portion 15. The arch-shaped member 31 has a symmetrical shape with the symmetrical surface 25 in between, and extends from the base end side to the tip end side along the symmetrical surface 25. The base end portion of the arch-shaped member 31 is fixed to the outer surface of the cylinder portion 20. The first mold portion 5 is fixed to the tip portion of the arch-shaped member 31.
　第２リンク部材１８は、２枚の板状部材で構成される。第２リンク部材１８の第１リンク部材１７及び固定部１５に対する接続は、第１リンク部材１７の中間部及びアーチ状部材３１の基端部をそれぞれ貫通するボルト３２ａ及び３２ｂにより、これらを回転軸として２枚の板状部材を当該中間部及び当該基端部に連結することによって行われる。この連結に際し、当該２枚の板状部材は、当該中間部及び当該基端部を挟むようにして、当該中間部及び当該基端部の両側に設けられる。 The second link member 18 is composed of two plate-shaped members. The connection of the second link member 18 to the first link member 17 and the fixing portion 15 is carried out by means of bolts 32a and 32b penetrating the intermediate portion of the first link member 17 and the base end portion of the arched member 31, respectively. This is done by connecting two plate-shaped members to the intermediate portion and the base end portion. At the time of this connection, the two plate-shaped members are provided on both sides of the intermediate portion and the proximal end portion so as to sandwich the intermediate portion and the proximal end portion.
　調整手段２８は、第１リンク部材１７の連結部２６に設けられたねじ孔３３と、レバー連結部２７ａに設けられた貫通孔３４を通ってねじ孔３３に螺合する調整ねじ３５とを備える。調整ねじ３５のねじ孔３３と反対側の端部には、調整用のつまみ３６が設けられる。調整ねじ３５のつまみ３６と連結部２６との間には、圧縮コイルばね３７が設けられる。レバー連結部２７ａと第１リンク部材１７の連結部２６との間には、圧縮コイルばね３８が設けられる。 The adjusting means 28 includes a screw hole 33 provided in the connecting portion 26 of the first link member 17, and an adjusting screw 35 screwed into the screw hole 33 through the through hole 34 provided in the lever connecting portion 27a. .. An adjustment knob 36 is provided at the end of the adjustment screw 35 on the side opposite to the screw hole 33. A compression coil spring 37 is provided between the knob 36 of the adjusting screw 35 and the connecting portion 26. A compression coil spring 38 is provided between the lever connecting portion 27a and the connecting portion 26 of the first link member 17.
　レバー部２７を回動させて第２型部６を前進方向Ｆに駆動する際には、図４のように、第２型部６は、調整ねじ３５がアーチ状部材３１の基端部に当接するまで前進方向Ｆに駆動する。 When the lever portion 27 is rotated to drive the second mold portion 6 in the forward direction F, as shown in FIG. 4, the adjusting screw 35 is attached to the base end portion of the arch-shaped member 31 in the second mold portion 6. It is driven in the forward direction F until it abuts.
　このときの駆動量については、調整手段２８において、つまみ３６を回してねじ孔３３からの調整ねじ３５の突出量を少なくすることにより、第１リンク部材１７とレバー部２７との回動方向の位置関係を、第２型部６が第１型部５に最も近づいた位置まで駆動できるように調整することができる。また、ねじ孔３３からの調整ねじ３５の突出量を大きくすることにより、第２型部６が第１型部５から最も離れた位置まで駆動できるよう調整することができる。 Regarding the driving amount at this time, in the adjusting means 28, by turning the knob 36 to reduce the amount of protrusion of the adjusting screw 35 from the screw hole 33, the rotation direction of the first link member 17 and the lever portion 27 The positional relationship can be adjusted so that the second mold portion 6 can be driven to the position closest to the first mold portion 5. Further, by increasing the amount of protrusion of the adjusting screw 35 from the screw hole 33, it is possible to adjust so that the second mold portion 6 can be driven to the position farthest from the first mold portion 5.
　なお、別の見方をすれば、図９及び図１０に示すように、第１型部５は、所定幅Ｗを有して後退方向Ｂに延びた板状部４１を備えると考えることもできる。板状部４１は、前進方向Ｆ及び後退方向Ｂに沿った第１面４２と、第１面４２と反対側の第２面４３と、第１面４２及び第２面４３を接続して後退方向Ｂに向いた第３面４４とを備える。板状部４１は、上述の第１部分１１に相当する。 From another point of view, as shown in FIGS. 9 and 10, it can be considered that the first mold portion 5 includes a plate-shaped portion 41 having a predetermined width W and extending in the receding direction B. .. The plate-shaped portion 41 retreats by connecting the first surface 42 along the forward direction F and the retreat direction B, the second surface 43 opposite to the first surface 42, and the first surface 42 and the second surface 43. It is provided with a third surface 44 facing the direction B. The plate-shaped portion 41 corresponds to the above-mentioned first portion 11.
　また、第２型部６は、第２型部６が前進方向Ｆに駆動されたときに板状部４１の第２面４３上に突出する突出部４５を備えると考えることができる。突出部４５は、上述の所定幅Ｗの方向において対応する幅を有して前進方向Ｆに向いた第４面４６と、第４面４６に隣接し、第２型部６が前進方向Ｆに駆動されるときに第２面４３と所定の間隔を有して対向する第５面４７とを備える。第４面４６及び第５面４７は上述の押圧面９を構成する。 Further, it can be considered that the second mold portion 6 includes a protruding portion 45 that protrudes on the second surface 43 of the plate-shaped portion 41 when the second mold portion 6 is driven in the forward direction F. The protruding portion 45 has a width corresponding to the predetermined width W described above and is adjacent to the fourth surface 46 facing the forward direction F and the fourth surface 46, and the second mold portion 6 is in the forward direction F. It includes a second surface 43 and a fifth surface 47 facing each other with a predetermined distance when driven. The fourth surface 46 and the fifth surface 47 form the above-mentioned pressing surface 9.
　この構成において、パネル２の鍔状縁部３に対して鋭角曲げを施す際には、まず、第１型部５により、パネル２の最初に部分曲げを行う部分が支持される。そして、レバー部２７及び柄部１９を片手で把持して握り締めることにより、駆動手段７を介して第２型部６を前進方向Ｆに駆動させる。これにより、第２型部６の押圧面９で鍔状縁部３の当該部分を押圧し、当該部分がパネル２の裏面と鋭角を成すように当該部分を曲折部４でさらに曲げることにより、部分曲げを行う。このときの様子が図４及び図５に示されている。この部分曲げにおける曲げ量は、調整ねじ３５のつまみ３６を操作して調整することができる。 In this configuration, when performing an acute angle bending on the brim-shaped edge portion 3 of the panel 2, the first mold portion 5 first supports the portion of the panel 2 to be partially bent. Then, by grasping and tightening the lever portion 27 and the handle portion 19 with one hand, the second mold portion 6 is driven in the forward direction F via the driving means 7. As a result, the pressing surface 9 of the second mold portion 6 presses the portion of the flange-shaped edge portion 3, and the portion is further bent at the bent portion 4 so that the portion forms an acute angle with the back surface of the panel 2. Perform partial bending. The situation at this time is shown in FIGS. 4 and 5. The bending amount in this partial bending can be adjusted by operating the knob 36 of the adjusting screw 35.
　この部分曲げを、鍔状縁部３に沿った加工方向Ｍに加工位置を変えながら行うことにより、鍔状縁部３に鋭角曲げを施すことができる。このとき、部分曲げの曲げ量をつまみ３６により数段階に分けて増大させながら、鋭角曲げを繰り返すのが好ましい。 By performing this partial bending while changing the processing position in the processing direction M along the flange-shaped edge portion 3, the brim-shaped edge portion 3 can be bent at an acute angle. At this time, it is preferable to repeat the acute-angled bending while increasing the bending amount of the partial bending in several steps by the knob 36.
　すなわち、まず、鍔状縁部３とパネル２の裏面とがなす鋭角が大きい角度となる部分曲げにより鋭角曲げを行う。その後、段階的に、より小さい曲げ量の部分曲げによる鋭角曲げを段階数分繰り返すことにより、目的とする角度の鋭角曲げを、高品位で達成することができる。これにより、その後の、鍔状縁部３をパネル２の裏面に接合させるための押圧加工が容易となる。 That is, first, acute angle bending is performed by partial bending in which the acute angle formed by the brim-shaped edge portion 3 and the back surface of the panel 2 is a large angle. After that, by repeating the acute-angled bending by the partial bending with a smaller bending amount step by step for the number of steps, the acute-angled bending at the desired angle can be achieved with high quality. This facilitates the subsequent pressing process for joining the collar-shaped edge portion 3 to the back surface of the panel 2.
　なお、上記の鋭角曲げを、パネル２に接合される他のパネル４０をパネル２と第１型部５の第１部分１１との間に挟んで行うことにより、曲折部４における曲率を該接合に適した値に設定することができる。これにより、その後の、パネル２を他のパネル４０に接合させるための押圧加工が容易となる。 The acute angle bending is performed by sandwiching another panel 40 to be joined to the panel 2 between the panel 2 and the first portion 11 of the first mold portion 5, so that the curvature at the bent portion 4 is joined. Can be set to a value suitable for. This facilitates the subsequent pressing process for joining the panel 2 to the other panel 40.
　なお、上記の鋭角曲げにより、図６のように、パネル２の裏面と鍔状縁部３とがなす鋭角がθに設定されたパネル２について、図７に示されるような押圧装置３９を用いて上記の押圧加工を施すことにより、ヘミング加工を完了することができる（特開２０１８－０６１９８１号公報参照）。その際に、パネル２に他のパネル４０を接合する場合には、パネル２の裏面及び鍔状縁部３と他のパネル４０との間に接着剤が配置される。 As shown in FIG. 6, the pressing device 39 as shown in FIG. 7 is used for the panel 2 in which the acute angle formed by the back surface of the panel 2 and the brim-shaped edge portion 3 is set to θ by the acute angle bending described above. By performing the above pressing process, the hemming process can be completed (see JP-A-2018-061981). At that time, when another panel 40 is joined to the panel 2, an adhesive is arranged on the back surface of the panel 2 and between the brim-shaped edge 3 and the other panel 40.
　なお、第１型部５の第３面４４（図９参照）の先端はＲ形状になっており、予折り（鋭角曲げ）後に押圧装置３９を用いて押圧加工を施すことにより、図８に示すようにヘミング加工後のパネル２の先端形状を球状（Ｒ形状）に仕上げることが可能である。 The tip of the third surface 44 (see FIG. 9) of the first mold portion 5 has an R shape, and is shown in FIG. 8 by performing pressing processing using the pressing device 39 after pre-folding (sharp bending). As shown, it is possible to finish the tip shape of the panel 2 after the hemming process into a spherical shape (R shape).
　以上のように、本実施形態によれば、調整手段２８により設定される第２型部６の前進方向Ｆへの駆動量に応じて、各部分曲げにおける鍔状縁部３の曲げ量が決まるので、施工者の熟練度に関係なく鋭角曲げを適切に行うことができる。 As described above, according to the present embodiment, the bending amount of the flange-shaped edge portion 3 in each partial bending is determined according to the driving amount of the second mold portion 6 in the forward direction F set by the adjusting means 28. Therefore, sharp bending can be appropriately performed regardless of the skill level of the builder.
　また、第１型部５側の案内面１３と第２型部６側の案内面１４とによって、第１型部５及び第２型部６が相互に案内方向にずれることなく案内されるので、各部分曲げにおける鍔状縁部３の曲げ量をより確実に一定化することができる。 Further, since the guide surface 13 on the side of the first mold portion 5 and the guide surface 14 on the side of the second mold portion 6 guide the first mold portion 5 and the second mold portion 6 without shifting in the guide direction. , The bending amount of the brim-shaped edge portion 3 in each partial bending can be more reliably made constant.
　また、固定部１５、第１リンク部材１７、第２リンク部材１８、及び第２型部６は、４リンク・１自由度のクランク・スライダー機構に類似したリンク機構を構成するので、駆動手段７を、適切な部分曲げが行われるように容易に設計することができる。 Further, since the fixing portion 15, the first link member 17, the second link member 18, and the second mold portion 6 form a link mechanism similar to the crank slider mechanism having 4 links and 1 degree of freedom, the driving means 7 Can be easily designed for proper partial bending.
　また、調整手段２８で第１リンク部材１７とレバー部２７との回動方向の位置関係を調整することにより、レバー部２７の回動量に応じた第２型部６の駆動量を適切に設定することができる。 Further, by adjusting the positional relationship between the first link member 17 and the lever portion 27 in the rotation direction by the adjusting means 28, the drive amount of the second mold portion 6 according to the rotation amount of the lever portion 27 is appropriately set. can do.
　また、第１リンク部材１７とレバー部２７とが、回動方向の遊びを有して連結されるので、各部の製造誤差を吸収して、第２型部６を、第１型部５に対して支障なく前進方向Ｆ及び後退方向Ｂに駆動することができる。また、この場合でも、上述の案内面１３、１４を有するので、部分曲げや鋭角曲げの精度を高く維持することができる。 Further, since the first link member 17 and the lever portion 27 are connected with a play in the rotation direction, the manufacturing error of each portion is absorbed and the second mold portion 6 is connected to the first mold portion 5. On the other hand, it can be driven in the forward direction F and the backward direction B without any trouble. Further, even in this case, since the guide surfaces 13 and 14 described above are provided, the accuracy of partial bending and acute angle bending can be maintained high.
　以上、本発明の実施形態について説明したが、本発明はこれに限定されず、適宜変形して実施することができる。例えば、レバー部２７及び柄部１９は、対称面２５に垂直な方向を向いていて、これらの握り操作を作業により適した体勢で行えるようにしてもよい。あるいは、さらに、このようなレバー部２７及び柄部１９の向きに適合した駆動手段を採用してもよい。 Although the embodiments of the present invention have been described above, the present invention is not limited to this, and can be appropriately modified and implemented. For example, the lever portion 27 and the handle portion 19 may be oriented in a direction perpendicular to the plane of symmetry 25 so that these gripping operations can be performed in a posture more suitable for the work. Alternatively, a driving means suitable for the orientation of the lever portion 27 and the handle portion 19 may be further adopted.
　１…ヘミング加工用鋭角曲げ具、２…パネル、３…鍔状縁部、４…曲折部、５…第１型部、６…第２型部、７…駆動手段、８…支持部、９…押圧面、１０…Ｕ字状部分、１１…第１部分、１２…第２部分、１３…案内面、１４…案内面、１５…固定部、１６…第１回動軸、１７…第１リンク部材、１８…第２リンク部材、１９…柄部、２０…シリンダ部、２１…ピストン部、２２…圧縮コイルばね、２３…取付部、２４…ボルト、２５…対称面、２６…連結部、２７…レバー部、２７ａ…レバー連結部、２８…調整手段、２９…ピン状部材、３０…長孔、３１…アーチ状部材、３２ａ、３２ｂ…ボルト、３３…ねじ孔、３４…貫通孔、３５…調整ねじ、３６…つまみ、３７、３８…圧縮コイルばね、３９…押圧装置、４０…他のパネル、４１…板状部、４２…第１面、４３…第２面、４４…第３面、４５…突出部、４６…第４面、４７…第５面。
  1 ... Sharp angle bender for hemming processing, 2 ... Panel, 3 ... Cylinder-shaped edge, 4 ... Bent part, 5 ... 1st mold part, 6 ... 2nd mold part, 7 ... Drive means, 8 ... Support part, 9 ... Pressing surface, 10 ... U-shaped part, 11 ... 1st part, 12 ... 2nd part, 13 ... Guide surface, 14 ... Guide surface, 15 ... Fixed part, 16 ... 1st rotation shaft, 17 ... 1st Link member, 18 ... 2nd link member, 19 ... Handle part, 20 ... Cylinder part, 21 ... Piston part, 22 ... Compression coil spring, 23 ... Mounting part, 24 ... Bolt, 25 ... Symmetrical plane, 26 ... Connecting part, 27 ... Lever part, 27a ... Lever connecting part, 28 ... Adjusting means, 29 ... Pin-shaped member, 30 ... Long hole, 31 ... Arch-shaped member, 32a, 32b ... Bolt, 33 ... Screw hole, 34 ... Through hole, 35 ... Adjusting screw, 36 ... Knob, 37, 38 ... Compression coil spring, 39 ... Pressing device, 40 ... Other panel, 41 ... Plate-shaped part, 42 ... 1st surface, 43 ... 2nd surface, 44 ... 3rd surface , 45 ... Projection, 46 ... 4th surface, 47 ... 5th surface.

Claims (6)

  1. 　第１型部と、
    　前記第１型部と協働する第２型部と、
    　前記第２型部を、前記第１型部に近づく前進方向及び遠ざかる後退方向に駆動する駆動手段とを備え、
    　前記第１型部は、所定幅を有して前記後退方向に延びた板状部を備え、
    　前記板状部は、
    　前記前進方向及び後退方向に沿った第１面と、
    　前記第１面と反対側の第２面と、
    　前記第１面及び前記第２面を接続して前記後退方向に向いた第３面とを備え、
    　前記第２型部は、該第２型部が前記前進方向に駆動されたときに前記第２面上に突出する突出部を備え、
    　前記突出部は、
    　前記所定幅の方向において対応する幅を有して前記前進方向に向いた第４面と、
    　前記第４面に隣接し、前記第２型部が前記前進方向に駆動されるときに前記第２面と所定の間隔を有して対向する第５面とを備えることを特徴とするヘミング加工用鋭角曲げ具。     Type 1 part and
    The second type part that cooperates with the first type part,
    The second mold portion is provided with a driving means for driving the second mold portion in the forward direction toward the first mold portion and the backward direction toward the first mold portion.
    The first mold portion includes a plate-shaped portion having a predetermined width and extending in the retracting direction.
    The plate-shaped part
    The first surface along the forward and backward directions and
    The second surface opposite to the first surface and
    A third surface that connects the first surface and the second surface and faces the backward direction is provided.
    The second mold portion includes a protruding portion that protrudes onto the second surface when the second mold portion is driven in the forward direction.
    The protrusion is
    A fourth surface having a corresponding width in the predetermined width direction and facing the forward direction,
    A hemming process that is adjacent to the fourth surface and includes a fifth surface that faces the second surface at a predetermined distance when the second mold portion is driven in the forward direction. Sharp angle bender.
  2. 　パネルの端縁を該パネルの裏面側にフランジ状に折り曲げることにより曲折部を介して該パネルに形成された鍔状縁部の一部を該一部が該パネルの裏面と鋭角を成すようにさらに折り曲げる部分曲げを、該鍔状縁部に沿った加工方向に加工位置を変えながら行うことにより該鍔状縁部に鋭角曲げを施すためのヘミング加工用鋭角曲げ具であって、
    　前記パネルの前記部分曲げを行う部分を、該パネルの裏面から前記曲折部にかけて当接して支持する支持部を有する第１型部と、
    　前記第１型部と協働して前記部分曲げを行うための第２型部と、
    　前記第２型部を、前記第１型部に対して近づく前進方向及び遠ざかる後退方向に駆動する駆動手段とを備え、
    　前記第２型部は、前記前進方向に駆動される際に、前記第１型部により支持された前記パネルの前記鍔状縁部の部分の外側を、前記部分曲げが行われるように押圧する押圧面を備えることを特徴とするヘミング加工用鋭角曲げ具。     By bending the edge of the panel toward the back surface of the panel in a flange shape, a part of the flange-shaped edge formed on the panel via the bent portion is formed at an acute angle with the back surface of the panel. Further, it is an acute-angle bending tool for hemming processing for performing acute-angle bending on the flange-shaped edge portion by performing partial bending along the flange-shaped edge portion while changing the processing position in the processing direction.
    A first mold portion having a support portion that abuts and supports the portion of the panel to be partially bent from the back surface of the panel to the bent portion.
    A second mold part for performing the partial bending in cooperation with the first mold part,
    The second mold portion is provided with a driving means for driving the second mold portion in the forward direction toward the first mold portion and the backward direction toward the first mold portion.
    When driven in the forward direction, the second mold portion presses the outside of the brim-shaped edge portion of the panel supported by the first mold portion so that the partial bending is performed. An acute-angle bending tool for hemming, which is characterized by having a pressing surface.
  3. 　前記第１型部は、前記加工方向に垂直な断面が前記後退方向に開いて延びたＵ字状であるＵ字状部分を備え、
    　前記Ｕ字状部分は、前記後退方向に延びた一方の部分である第１部分と、該後退方向に延びた他方の部分である第２部分とを備え、
    　前記第１部分は、前記支持部を構成し、
    　前記第２部分の前記第１部分に対向する面は、前記第１型部及び前記第２型部を相互に前記前進方向及び前記後退方向に案内する該第１型部側の案内面を構成し、
    　前記第２型部は、
    　前記加工方向に垂直な断面が、該第２型部が前記前進方向に駆動されるときに前記Ｕ字状部分の内側に侵入可能な形状を有し、
    　該第２型部が前記Ｕ字状部分の内側に侵入するときに前記第１型部側の案内面に対向する面が、該進入時に該案内面と摺動して前記相互の案内に供される該第２型部側の案内面を構成することを特徴とする請求項２に記載のヘミング加工用鋭角曲げ具。     The first mold portion includes a U-shaped portion having a U-shaped cross section perpendicular to the machining direction that extends in the retracting direction.
    The U-shaped portion includes a first portion which is one portion extending in the retracting direction and a second portion which is the other portion extending in the retracting direction.
    The first portion constitutes the support portion and constitutes the support portion.
    The surface of the second portion facing the first portion constitutes a guide surface on the side of the first mold portion that guides the first mold portion and the second mold portion to each other in the forward direction and the backward direction. And
    The second type part
    The cross section perpendicular to the processing direction has a shape that allows the second mold portion to penetrate inside the U-shaped portion when driven in the forward direction.
    When the second mold portion invades the inside of the U-shaped portion, the surface facing the guide surface on the first mold portion side slides with the guide surface at the time of the invasion to provide mutual guidance. The acute-angled bending tool for hemming according to claim 2, wherein the guide surface on the side of the second mold portion is formed.
  4. 　前記駆動手段は、
    　前記第１型部が固定され、かつ前記第２型部を前記前進方向及び前記後退方向に進退自在に支持する固定部と、
    　前記固定部に対して、一端が第１回動軸の周りで回動自在に接続された第１リンク部材と、
    　前記第１リンク部材に一端が回動自在に接続され、他端が前記固定部に回動自在に接続された第２リンク部材とを備えることを特徴とする請求項２に記載のヘミング加工用鋭角曲げ具。     The driving means
    A fixed portion in which the first mold portion is fixed and the second mold portion is movably supported in the forward direction and the backward direction.
    A first link member whose one end is rotatably connected to the fixed portion around the first rotation shaft.
    The hemming process according to claim 2, further comprising a second link member having one end rotatably connected to the first link member and the other end rotatably connected to the fixed portion. Sharp bender.
  5. 　前記駆動手段は、
    　前記第１リンク部材とともに前記第１回動軸の周りで回動可能で、前記第１リンク部材を回動させるためのレバー部と、
    　前記第１リンク部材と前記レバー部との回動方向の位置関係を調整するための調整手段とを備えることを特徴とする請求項４に記載のヘミング加工用鋭角曲げ具。     The driving means
    A lever portion that can rotate around the first rotation shaft together with the first link member and rotates the first link member.
    The acute angle bending tool for hemming according to claim 4, further comprising an adjusting means for adjusting the positional relationship between the first link member and the lever portion in the rotational direction.
  6. 　前記第１リンク部材と前記レバー部とは、前記第１回動軸以外の箇所で、相互に該第１回動軸を中心とする回動方向の遊びを有して連結されていることを特徴とする請求項５に記載のヘミング加工用鋭角曲げ具。
          The first link member and the lever portion are connected to each other with a play in the rotation direction about the first rotation shaft at a place other than the first rotation shaft. The acute angle bending tool for hemming according to claim 5.
PCT/JP2020/017070 2019-05-14 2020-04-20 Acute-angle bending tool for hemming WO2020230538A1 (en)

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JP2019091112A JP2020185587A (en) 2019-05-14 2019-05-14 Sharp bending tool for hemming
JP2019-091112 2019-05-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55177938U (en) * 1979-05-31 1980-12-20
JPS574323A (en) * 1980-06-06 1982-01-09 Kaneyoshi Kotani Method and apparatus for bending metallic plate
JPH03230821A (en) * 1990-02-02 1991-10-14 Toyota Motor Corp Press die for hemming
JPH11309527A (en) * 1998-04-23 1999-11-09 Daihatsu Motor Co Ltd Hemming device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55177938U (en) * 1979-05-31 1980-12-20
JPS574323A (en) * 1980-06-06 1982-01-09 Kaneyoshi Kotani Method and apparatus for bending metallic plate
JPH03230821A (en) * 1990-02-02 1991-10-14 Toyota Motor Corp Press die for hemming
JPH11309527A (en) * 1998-04-23 1999-11-09 Daihatsu Motor Co Ltd Hemming device

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JP2020185587A (en) 2020-11-19

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