WO2016125507A1 - Procédé d'assemblage d'éléments - Google Patents

Procédé d'assemblage d'éléments Download PDF

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Publication number
WO2016125507A1
WO2016125507A1 PCT/JP2016/050046 JP2016050046W WO2016125507A1 WO 2016125507 A1 WO2016125507 A1 WO 2016125507A1 JP 2016050046 W JP2016050046 W JP 2016050046W WO 2016125507 A1 WO2016125507 A1 WO 2016125507A1
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WO
WIPO (PCT)
Prior art keywords
aluminum pipe
hole
joining
rubber
caulking
Prior art date
Application number
PCT/JP2016/050046
Other languages
English (en)
Japanese (ja)
Inventor
康裕 前田
二郎 岩谷
純也 内藤
秀人 勝間
Original Assignee
株式会社神戸製鋼所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015124075A external-priority patent/JP6454233B2/ja
Application filed by 株式会社神戸製鋼所 filed Critical 株式会社神戸製鋼所
Priority to EP16746338.9A priority Critical patent/EP3254781B1/fr
Priority to CN201680008666.9A priority patent/CN107206464B/zh
Priority to US15/546,021 priority patent/US20180015527A1/en
Publication of WO2016125507A1 publication Critical patent/WO2016125507A1/fr
Priority to US16/352,740 priority patent/US20190210089A1/en
Priority to US16/352,732 priority patent/US20190210088A1/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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/044—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods perpendicular
    • 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
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
    • 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
    • B21D39/08—Tube expanders
    • B21D39/20—Tube expanders with mandrels, e.g. expandable

Definitions

  • the present invention relates to a method for joining members.
  • high strength steel sheets called high-tension steel are used. Although these high-tension steels are effective for weight reduction and safety improvement, they are still heavy compared to low specific gravity materials such as aluminum. Further, high tension steel has problems such as a decrease in formability due to its high strength, an increase in forming load, and a decrease in dimensional accuracy. In order to solve these problems, in recent years, multi-materials have been used in which extruded products, cast products, and press-formed products using aluminum having a lighter specific gravity than steel plates are used together with steel parts.
  • a solenoid forming coil is inserted inside a pipe-shaped part fitted to a mating part, and an induced current is induced in a conductor pipe by a changing magnetic field generated by applying an impact current to the coil.
  • An electromagnetic force is generated between the magnetic field generated by the primary current of the coil and the induced current flowing in the opposite direction on the circumferential direction of the pipe.
  • the pipe receives the outward force and is deformed and expanded and caulked to the mating part. Is done.
  • This joining method is suitable for copper and aluminum having good electrical conductivity, and has been practically used in part for joining automobile parts.
  • Patent Document 1 discloses a caulking joining technique by electromagnetic forming for making a multi-material.
  • a bumper reinforcement made of a metal member having a hollow cross section is deformed and enlarged by electromagnetic forming, and is fitted and joined to a hole provided in a bumper stay made of an aluminum alloy.
  • electromagnetic forming is suitable for caulking and joining a copper or aluminum hollow part having good electrical conductivity to a mating part, and a circular shape is preferred because of its joining mechanism.
  • the solenoid coil to be used must be smaller than the inner diameter of the aluminum part (aluminum pipe).
  • the diameter of a coil when joining small-diameter parts, there are problems in terms of difficulty in manufacturing the coil, performance, and durability.
  • the difficulty of manufacturing it becomes difficult to form a conducting wire into a coil shape, and restrictions on the material and cross-sectional shape of the conducting wire become severe, and the conducting wire section is deformed when forming into a coil shape.
  • a new capital investment is required, saying that a large-capacity high-voltage capacitor is necessary.
  • An object of the present invention is to provide a member joining method that can reduce the load on each member, improve the joining strength, and join two members at low cost.
  • the present invention prepares a first member having a first portion provided with a first hole and a hollow second member, and inserts the second member into the first hole of the first member. And passing the first portion, inserting an elastic body into the second member, compressing the elastic body in the axial direction of the second member and expanding it from the inside to the outside, thereby Provided is a joining method in which at least a portion inserted through the first hole of the second member is enlarged and deformed to be caulked and joined to the first portion.
  • the elastic body is expanded outward to uniformly expand and deform the second member, thereby preventing local deformation and reducing the load on each member.
  • the second member can be uniformly deformed by utilizing the property that the elastic body compressed in the axial direction expands uniformly from the inside toward the outside. Therefore, the fitting accuracy is improved and the bonding strength can be improved.
  • Electromagnetic forming can be used only for conductive materials, and the cross-sectional shape and dimensions are limited by the coil used. In contrast, this method does not depend on the material, and there are no restrictions on the cross-sectional shape and dimensions.
  • since it can be executed with equipment that applies a compressive force to the elastic body electrical equipment that requires a large-capacity capacitor is also unnecessary. Therefore, two members can be joined at a low cost.
  • first hole portion of the first member and the cross-sectional shape of the portion inserted through the first hole portion of the second member may be similar.
  • the second member can be uniformly enlarged and deformed, and a local load is applied to the first member and the second member. It can be prevented from occurring.
  • an outer frame mold may be disposed outside the second member, and at least a part of the second member may be molded and caulked and joined along the outer frame mold.
  • the second member can be deformed into an arbitrary shape by using outer frame molds having various inner shapes.
  • the shape to be deformed can be appropriately selected from the viewpoint of component performance, etc., and can be made into a shape according to the application.
  • an outer frame mold may be arranged outside the second member, and the expansion deformation of the second member may be partially restricted by the outer frame mold and crimped.
  • the outer frame mold by arranging the outer frame mold, it is possible to define a region where the second member is expanded and deformed, and to control the expanded and deformed region with high accuracy.
  • the enlarged deformation region refers to a region where the second member is enlarged and deformed outward.
  • the second member when the elastic body is compressed, the second member may also be compressed in the axial direction.
  • the second member can also be compressed in the axial direction to assist the expansion deformation in the outer direction of the second member.
  • the second member can be expanded and deformed more securely and crimped together with the expansion deformation force from the inside of the second member by the elastic body.
  • edge of the first hole may be burring processed.
  • the strength of the hole of the first member and the first portion can be improved by burring the edge of the hole of the first member. Accordingly, it is possible to prevent the deformation of the first member, the damage of the second member, and the joint strength between the two members.
  • a convex bead portion may be formed in the axial direction on a surface different from the surface on which the first hole portion is provided, and the bead portion may be caulked and joined.
  • both members can be fixed more and the joining strength can be further improved.
  • the second member when the second member has a circular cross section, the second member can be prevented from rotating with respect to the first member.
  • first member may include a second portion having a second hole portion, and may be caulked and joined to the second member at the first hole portion and the second hole portion.
  • the joining strength can be further improved by caulking and joining at two places as compared with the case of caulking and joining at one place.
  • the elastic body may be separated by a joint portion between the first member and the second member.
  • the elastic body since the elastic body is separated at the joint, deformation of the joint of the first member can be prevented. Specifically, since the elastic body is separated so as not to dispose the elastic body near the joint, the second member does not receive the expansion deformation force from the elastic body near the joint, and expands near the joint. do not do. Therefore, the first member does not receive a force from the second member in the vicinity of the joint, and can maintain the shape of the joint.
  • a plate may be inserted between the separated elastic bodies.
  • the plate since the plate is present at the joint, the deformation of the joint of the first member can be prevented more reliably. Since the plate does not expand and deform even when it receives an axial compressive force, the expansion deformation force is not applied to the joint, and the original shape of the joint can be more reliably maintained.
  • the second member may be provided with a partition wall on the inner side and provided with an outer wall extending in the axial direction, and a plurality of the elastic bodies may be inserted into the space partitioned by the partition wall and joined by caulking.
  • the second member may include an end face inclined with respect to the axis, and both end faces of the elastic body in the axial direction may be parallel to the inclined end face.
  • the first member may be provided with an upright wall portion parallel to the axis, and the deformation of the upright wall portion may be restrained by a fixing jig and joined by caulking.
  • the elastic member is expanded from the inside toward the outside to uniformly deform and expand the second member, thereby preventing local deformation and reducing the load on each member. Therefore, the fitting accuracy is improved and the bonding strength can be improved. Moreover, since it is simple compared with electromagnetic forming and other processing methods, two members can be joined at low cost.
  • FIG. 1A The perspective view of the channel type steel parts which have a circular hole, and the aluminum pipe of a cross-section circle.
  • gum which is a modification of 1st Embodiment of this invention is a fluid enclosure member.
  • gum which is a modification of 1st Embodiment of this invention is a fluid enclosure member.
  • the perspective view of the steel parts which have a circular hole in the case of caulking in two places which concern on 6th Embodiment of this invention, and an aluminum pipe with a circular cross section.
  • the perspective view of the hat-channel type steel part which has a square hole in the case of caulking in two places which is a modification of 6th Embodiment of this invention, and an aluminum pipe with a square cross section. Sectional drawing in the middle of crimping of FIG. 15A and FIG. 15B.
  • FIG. 16B is a cross-sectional view after caulking in FIG. 16A.
  • FIG. 16B is a cross-sectional view after partially expanding and caulking in FIG. 16A.
  • FIG. 18B is a cross-sectional view taken along line XVIII-XVIII in FIG. 18A.
  • FIG. 21B is a perspective view after caulking the resin cylinder part and the aluminum pipe of FIG. 21A.
  • FIG. 21B is a cross-sectional view before caulking the resin cylinder part and the aluminum pipe of FIG. 21A.
  • FIG. 21B is a cross-sectional view after caulking the resin cylinder part and the aluminum pipe of FIG. 21A.
  • FIG. 26B is a sectional view taken along line XXVI-XXVI in FIG. 26A. The perspective view of the aluminum pipe which concerns on 11th Embodiment of this invention.
  • FIG. 27B is a cross-sectional view before caulking along the line XXVI-XXVI in FIG. 27A.
  • FIG. 27B is a cross-sectional view after caulking along the line XXVI-XXVI in FIG. 27A.
  • the top view of the aluminum pipe and rubber which concern on 11th Embodiment of this invention.
  • Sectional drawing before crimping which concerns on 12th Embodiment of this invention.
  • the top view before and behind crimping which concerns on 13th Embodiment of this invention The top view before and behind crimping which concerns on 13th Embodiment of this invention.
  • the front view before crimping which concerns on 13th Embodiment of this invention.
  • the material of the individual member is illustrated, but the material of the individual member in all the embodiments is not limited to those specifically illustrated, and the present invention is applied to any material. Is applicable.
  • the steel part 10 has a channel shape made of high tension steel.
  • the steel part 10 includes a bottom wall (first portion) 11, two side walls 12 and 13 that extend vertically upward from the bottom wall 11, and an upper wall 14 that extends outward from each of the two side walls 12 and 13 in the horizontal direction. .
  • the bottom wall 11 is provided with a hole portion (first hole portion) 15 into which the aluminum pipe 20 can be inserted.
  • the aluminum pipe 20 is made of an aluminum alloy and has a hollow shape and a circular cross section, and extends in the direction of the axis L.
  • the axis L passes through the center of the aluminum pipe 20 and the center of the hole 15 of the steel part 10.
  • the aluminum pipe 20 and the steel part 10 are deformed from the inner side toward the outer side and the upper end 21 in the drawing is crushed, whereby the steel part 10 It is caulked and joined to the hole 15.
  • the shape and size of the hole 15 of the steel part 10 are similar to the cross-sectional shape of the aluminum pipe 20 and are preferably as small as possible within the range in which the aluminum pipe 20 can be inserted.
  • the caulking joining of the steel part 10 and the aluminum pipe 20 is performed according to the following procedure.
  • rubber (elastic body) 30 is used for caulking and joining of the steel part 10 and the aluminum pipe 20.
  • the aluminum pipe 20 is inserted into the hole 15 of the steel part 10, the rubber 30 is inserted into the aluminum pipe 20, and set in the press device 40.
  • the aluminum pipe 20 may be inserted through the hole 15 with the rubber 30 inserted therein.
  • the pressing device 40 includes an indenter 43 and a receiving seat 42.
  • the indenter 43 has a flat lower surface and presses the steel part 10 or the rubber 30 on the lower surface.
  • the seat 42 has a flat upper surface, and the steel part 10 and the rubber 30 are placed on the upper surface.
  • the rubber 30 has a cylindrical shape with a diameter that can be inserted into the aluminum pipe 20, and has a longer overall length than the aluminum pipe 20.
  • the rubber 30 partially protrudes from the upper end of the aluminum pipe 20. For this reason, when the press device 40 starts pressing and the seat 42 and the indenter 43 relatively approach each other, the rubber 30 is pressed first.
  • the rubber 30 does not necessarily have to protrude from the upper end of the aluminum pipe 20 and may be accommodated in or flush with the upper end of the aluminum pipe 20.
  • an external force of compression is applied to the rubber 30 in the direction of the axis L by the press device 40.
  • the size in the radial direction increases.
  • the rubber 30 is elastically deformed (expanded) from the axis L toward the outside, and the aluminum pipe 20 is expanded and deformed.
  • the aluminum pipe 20 is further expanded and deformed by further compression by the press device 40, and at the same time, the upper end 21 in the drawing of the aluminum pipe 20 is bent and pushed toward the steel part 10. Crushing and caulking joining with the steel part 10.
  • the rubber 30 from which the compression force of the pressing device 40 has been removed can be restored to its original shape by its own elastic force and easily removed from the aluminum pipe 20.
  • Electromagnetic forming can be used only for conductive materials, and the cross-sectional shape and dimensions are limited by the coil used. In contrast, this method does not depend on the material, and there are no restrictions on the cross-sectional shape and dimensions. Moreover, since it can be implemented with equipment that applies a compressive force to the rubber 30, electrical equipment that requires a large-capacity capacitor, such as electromagnetic molding, is also unnecessary.
  • this method can be used for members of various materials other than the two parts made of high tension steel and aluminum alloy. The same applies to the following embodiments.
  • the material of the rubber 30 inserted inside the aluminum pipe 20 is preferably, for example, urethane rubber, chloroprene rubber, CNR rubber (chloroprene rubber + nitrile rubber), or silicon rubber.
  • the hardness of these rubbers 30 is preferably 30 or more on Shore A.
  • a fluid sealing member 32 in which a gas or liquid is sealed may be used instead of the rubber 30.
  • any other material can be used as long as it can expand outward by a compressive force and expand and deform the aluminum pipe 20.
  • the shape and size of the hole 15 provided in the bottom wall 11 of the steel part 10 may not be similar to the cross-sectional shape of the aluminum pipe 20 to be fitted. .
  • the steel part 10 having a circular hole 15 as shown in FIG. 4A and the aluminum pipe 20 having a square section can be caulked and joined, and the steel part 10 having a square hole 15 as shown in FIG. 4B can be joined.
  • the component 10 and the aluminum pipe 20 having a circular cross section can be caulked and joined.
  • the hole 15 may be subjected to burring processing (flange-up) in order to prevent deformation of the steel part 10, reduce damage to the aluminum pipe 20, and improve caulking strength.
  • burring processing flange-up
  • FIGS. 5A to 5C various cross-sectional shapes as shown in FIGS. 5A to 5C can be considered.
  • FIG. 5A the radius of the shoulder 15a is increased.
  • FIG. 5B the shoulder 15a is chamfered.
  • roll processing is adopted. Thereby, even when the strength of the steel part 10 is high, it is possible to effectively prevent the work cracking of the steel part 10.
  • the direction of burring may be either upward or downward in the figure.
  • a two-dot chain line in FIG. 2A it is better to form it downward in the drawing so that the portion bent and raised by the burring process does not appear on the surface of the steel part 10.
  • various shapes such as a circle (see FIG. 6A) and a quadrangle (see FIG. 6B) can be considered as the shape of the hole 15 to be subjected to burring.
  • the corner 15b can be prevented from cracking by cutting out the corner 15b and bending only the right side 15c.
  • (Second Embodiment) 7A and 7B is the same as that of the first embodiment of FIGS. 2A to 2D except for the portion related to the outer frame mold 41. Therefore, the same parts as those shown in FIGS. 2A to 2D are denoted by the same reference numerals and description thereof is omitted.
  • the steel part 10 and the aluminum pipe 20 are caulked and joined using an outer frame mold 41.
  • the outer frame mold 41 has a cylindrical shape concentric with the aluminum pipe 20.
  • the outer frame mold 41 is disposed between the receiving seat 42 and the steel part 10 and outside the aluminum pipe 20.
  • a gap is provided between the aluminum pipe 20 and the outer frame mold 41.
  • FIG. 7B by pressing with the indenter 43, the inner shape of the outer frame mold 41 can be adjusted when the aluminum pipe 20 is enlarged and deformed.
  • the inner surface shape of the outer frame mold 41 is a hexagonal shape (see FIG. 8B) or a cross shape (see FIG. 8C) in addition to the cylindrical shape (see FIG. 8A). It is possible to make various polygonal shapes as follows. These shapes can be appropriately selected from the viewpoint of component performance. For example, when the aluminum pipe 20 is a bumper stay which is one of the automobile parts, if the minute unevenness is given to the inner surface of the outer frame mold 41, the minute uneven shape is transferred to the aluminum pipe 20, It is possible to improve the absorption performance of collision energy at the time of collision.
  • (Third embodiment) 9A to 10B is the same as the first embodiment of FIGS. 2A to 2D except for the portion related to the enlarged deformation region 22 of the aluminum pipe 20. Therefore, the same parts as those shown in FIGS. 2A to 2D are denoted by the same reference numerals and description thereof is omitted.
  • the length of the rubber 30 to be inserted into the aluminum pipe 20 is shortened, and the rubber 30 is disposed only in the vicinity of the joint portion of the aluminum pipe 20.
  • the seat 42 has a cylindrical convex portion 42 a extending upward, and the convex portion 42 a is inserted into the aluminum pipe 20 and supports the rubber 30. That is, the lower end of the rubber 30 is in contact with the upper end of the convex portion 42a, and the upper end of the rubber 30 is in contact with the lower end of the indenter.
  • the outward deformation force does not act on the portion where the rubber 30 is not disposed. Therefore, as shown in FIG. 9B, the enlarged deformation region 22 of the aluminum pipe 20 is limited, and only the vicinity of the joint portion of the aluminum pipe 20 can be enlarged and deformed to be caulked and joined to the steel part 10. Whether the overall shape of the aluminum pipe 20 is deformed as in the first and second embodiments described above or whether the aluminum pipe 20 is partially deformed as in the present embodiment is appropriately selected depending on the relationship with the component performance. do it.
  • a cylindrical outer frame mold 44 that restricts expansion deformation may be disposed around the aluminum pipe 20.
  • the outer frame mold 44 has an enlarged diameter portion 44a having a large inner diameter in the vicinity of the joint portion at the upper end so that only the vicinity of the joint portion is enlarged and deformed.
  • the inner diameter other than the enlarged diameter portion 44a is approximately equal to the outer diameter of the aluminum pipe 20. Therefore, when the outer frame mold 44 is used, the enlarged deformation region 22 can be controlled with high accuracy so that only the vicinity of the joint portion of the aluminum pipe 20 is enlarged and deformed.
  • FIGS. 11A and 11B The joining method of this embodiment shown in FIGS. 11A and 11B is the same as that of the third embodiment of FIGS. 10A and 10B except for the portion related to the shape of the indenter 43. Therefore, the same components as those shown in FIGS. 10A and 10B are denoted by the same reference numerals and description thereof is omitted.
  • the indenter 43 provided in the press device 40 of the present embodiment has a truncated cone shape that tapers downward, and has a convex portion 43a and a flange portion 43b.
  • a large forming force may be required for the expansion deformation of the end portion 21 of the aluminum pipe 20 that protrudes upward.
  • the deformation of the rubber 30 alone may cause insufficient caulking, or the rubber 30.
  • the durability of the large deformation may cause a problem. In such a case, the method of this embodiment is effective.
  • (Fifth embodiment) 12A and 12B is the same as that of the first embodiment shown in FIGS. 2A to 2D except for the portions related to the shapes of the indenter 43 and the receiving seat 42. Therefore, the same parts as those shown in FIGS. 2A to 2D are denoted by the same reference numerals and description thereof is omitted.
  • the seat 42 includes a columnar convex portion 42a extending upward and a flange portion 42b provided around the convex portion 42a.
  • the indenter 43 includes a columnar convex portion 43a extending downward, and a flange portion 43b provided around the convex portion 43a.
  • the convex portions 42a and 43a are inserted into the aluminum pipe 20, respectively.
  • the collar portions 42b and 43b come into contact with the respective end portions of the aluminum pipe 20 during pressing. Thereby, a compressive force is applied to the aluminum pipe 20 in the direction of the axis L by the flange portions 42b and 43b.
  • the aluminum pipe 20 can also be compressed in the direction of the axis L so that expansion deformation in the outer direction of the aluminum pipe 20 can be assisted. That is, in combination with the expanding deformation force from the inside of the aluminum pipe 20 by the rubber 30, the aluminum pipe 20 can be expanded and deformed more securely and caulked.
  • an outer frame 45 outside the portion of the aluminum pipe 20 that is not expanded and deformed (the end portion 21 in this embodiment).
  • the outer frame 45 is cylindrical and is arranged around the end 21 of the aluminum pipe 20.
  • the steel part 10 and the aluminum pipe 20 are caulked and joined at two locations.
  • the steel part 10 includes a bottom wall 11 that forms a closed section, an upper wall (second portion) 14 that is arranged in parallel to the bottom wall 11, and two side walls 12 and 13 that connect them.
  • the bottom wall 11 is provided with a hole 15 (first hole).
  • the upper wall 14 is provided with a hole 17 (second hole).
  • the aluminum pipe 20 is caulked and joined to the two holes 15 and 17.
  • FIG. 16 shows a cross-sectional view when caulking.
  • the end 21 of the aluminum pipe 20 is directed toward the steel part 10 by the indenter 43 as in the first embodiment.
  • the aluminum pipe 20 is enlarged and deformed and crimped and joined.
  • the lower pipe 15 is caulked and joined by simply expanding and deforming the aluminum pipe 20.
  • the joining strength can be further improved as compared with caulking joining at one location.
  • the caulking and joining method using the rubber 30 is effective because the equipment used is the same as that in the caulking joining at one place, and can easily cope with caulking joining at a plurality of places.
  • the shape of the steel part 10 or the aluminum pipe 20 when joining at two locations is not limited to this.
  • the steel part 10 may be a hat channel type as shown in FIGS. 15A and 15B, or may have another shape.
  • the entire aluminum pipe 20 when caulking and joining, the entire aluminum pipe 20 may be freely expanded and deformed.
  • the outer frame mold 44 described with reference to FIGS. 7A and 7B as shown in FIG. 17B, only the vicinity of the joint portion of the aluminum pipe 20 may be enlarged and deformed to be joined by caulking.
  • FIGS. 18A and 18B The joining method of this embodiment shown in FIGS. 18A and 18B is the same as that of the sixth embodiment of FIG. 16 except for the joining location and the portions related to the bead portions 12a and 13a. Accordingly, parts similar to those in the configuration shown in FIG.
  • the steel part 10 is provided with bead portions 12a and 13a on two side walls 12 and 13, respectively.
  • the bead portions 12a and 13a are inwardly convex and extend in the axis L direction.
  • the aluminum pipe 20 is caulked and joined to all of the hole portion 15 of the bottom wall 11 and the bead portions 12 a and 13 a of the two side walls 12 and 13.
  • joint strength can be further improved by caulking and joining including bead portions 12a and 13a of side walls 12 and 13. Further, since the caulking and joining are performed including the bead portions 12a and 13a, the rotation of the aluminum pipe 20 relative to the component 10 can be restricted. Thus, bead parts 12a and 13a are effective also in prevention of rotation of aluminum pipe 20. Instead of this, it is also effective to give a notch shape to the edge of the hole 15 or prevent the aluminum pipe 20 from rotating in order to prevent the aluminum pipe 20 from rotating.
  • FIG. 19 The joining method of the present embodiment shown in FIG. 19 is the same as that of the seventh embodiment of FIG. 18A except for the portion related to the rubber 30 being separated. Accordingly, the same parts as those shown in FIG. 18A are denoted by the same reference numerals, and the description thereof is omitted.
  • the rubber 30 is separated in the vicinity of the hole 15. According to this method, since the rubber 30 is separated at the hole 15, that is, the joint, deformation of the hole 15 and the bottom wall 11 of the steel part 10 can be prevented. Specifically, since the rubber 30 is separated, an expansion deformation force is not applied to the hole 15, and the original shapes of the hole 15 and the bottom wall 11 can be maintained.
  • a plate-like plate 31 between the rubbers 30 separated at the joints inserted into the aluminum pipe 20.
  • the material of the plate 31 may be any material such as metal or resin as long as it has a strength that does not deform due to the compressive force received from the rubber 30, and the thickness is preferably 15 mm or less.
  • the presence of the plate 31 at the joint can more reliably prevent the hole 15 and the bottom wall 11 of the steel part 10 from being deformed. Since the plate 31 is not enlarged and deformed, an enlarged deformation force is not applied to the hole 15, and the original shapes of the hole 15 and the bottom wall 11 can be maintained.
  • the rubber 30 is separated and the plate 31 is disposed therebetween, but instead of this, the rubber 30 partially made of a different material as shown in FIG. 20B may be used.
  • the rubber is not separated but is integrated, but has a high hardness portion 30a in the vicinity of the joint. That is, the rubber 30 is formed with high hardness only in the vicinity of the joint. Therefore, the high hardness portion 30a plays the same role as the plate 31, and the original shapes of the hole 15 and the bottom wall 11 can be maintained.
  • FIGS. 21A to 22B The joining method of this embodiment shown in FIGS. 21A to 22B is the same as that of the fifth embodiment of FIGS. 9A and 9B except for the part relating to the steel part 10 being replaced with a cylindrical resin tube part 50. It is the same. Therefore, the same components as those shown in FIGS. 9A and 9B are denoted by the same reference numerals and description thereof is omitted.
  • the cylindrical resin cylinder component 50 having a flange at the upper end and the aluminum pipe 20 are caulked and joined.
  • the target member may not be plate-shaped and may not be made of metal.
  • the aluminum pipe 20 is expanded and deformed by deforming the rubber 30 outward when the compression force in the direction of the axis L is applied. Therefore, it can be used not only for conductive materials but also for resin materials as in electromagnetic molding, and the shape is not limited to a plate shape.
  • FIGS. 22A and 22B are cross-sectional views before and after caulking and joining of the resin cylinder part and the aluminum pipe of FIG. 21A. As shown in FIGS. 22A and 22B, the aluminum pipe 20 is enlarged and deformed at both ends of a cylindrical resin tube part 50 and is crimped and joined.
  • a cylindrical aluminum stay (second member) 120 is caulked and joined to a steel bumper beam (first member) 110 having a partition 111 in the center and having a closed section.
  • the steel bumper beam 110 has openings 113 and 113 on both sides, and the openings 113 and 113 are divided by a partition 111.
  • the top plate 114 (see FIG. 26A) of the steel bumper beam 110 is removed for explanation.
  • a bulging jig 150 including a round bar-like rubber 130, a steel plate-like plate 131, and a thin round bar 140 made of steel is used.
  • a through hole 112 into which a thin round bar 140 can be inserted is provided at the center of the rubber (elastic body) 130 and the plate-like plate 131.
  • One end of the round bar 140 is provided with a collar 141 for preventing the rubber 130 from falling.
  • the rubber 130 is divided into two parts, one of which is provided with a counterbore 132 on which the collar 141 of the round bar 140 can be locked.
  • a plate-like plate 131 is placed on the rubber 130 with the spot facing 132 facing downward, and the other rubber 130 is placed thereon, and the round bar 140 is inserted from below.
  • the plate 131 is a circle having an outer diameter of ⁇ 83.5 mm and a thickness of 10 mm.
  • the rubber 130 is a urethane rubber having an outer diameter of ⁇ 83.5 mm, a length of 50 mm, and a hardness of Shore A and 90.
  • FIG. 24B shows a state in which the aluminum stay 120 is inserted into the hole (hole) 112 (see FIG. 23) provided in the steel bumper beam 110 and the bulging jig 150 described above is inserted into the aluminum stay 120.
  • the steel bumper beam 110 is formed by rolling a 1470 MPa grade cold-rolled steel sheet having a thickness of 1.4 mm into a closed cross-sectional shape having a partition 111 at the center by roll forming.
  • a circular hole 112 having an outer diameter of ⁇ 90.2 mm is formed in the joint.
  • a part of the central partition 111 is also removed.
  • the aluminum stay 120 is a circular pipe made of an A6063 aluminum alloy and having a plate thickness of 3 mm, an outer diameter of ⁇ 90 mm, and a length of 150 mm.
  • FIG. 25A shows a state in which the steel bumper beam 110, the aluminum stay 120, and the bulging jig 150 are set on the lower mold 152, and the pushing jig 151 is arranged on the upper side.
  • This state is set in the press device 40 (see FIG. 2A to FIG. 2D), the slide on which the pressing jig 151 is set is lowered, and a compressive force is applied to the rubber 130.
  • pressing of the aluminum pipe 20 in the direction of the axis L as shown in FIGS. 9A and 9B is not performed.
  • FIG. 25B shows the situation when the slide is at bottom dead center.
  • the rubber 130 is compressed by the pushing jig 151 and expanded and deformed in the horizontal direction, and the aluminum stay 120 is bulged. Since the plate-like plate 131 is inserted, an excessive force does not act on the joining surface of the steel bumper beam 110, unnecessary deformation is suppressed, and the caulking joining with high fitting accuracy is completed.
  • FIGS. 26A and 26B show the steel bumper beam 110 and the aluminum stay 120 that have been caulked and joined.
  • FIG. 26A is a cross-sectional view showing a state in which the steel bumper beam 110 and the aluminum stay 120 are caulked and joined
  • FIG. 26B is a cross-sectional view taken along the line XXVI-XXVI.
  • a feature of the present embodiment is that the center partition 111 can be caulked in addition to caulking in the hole 112 provided in the steel bumper beam 110 due to the deformation and expansion of the aluminum stay 120 by the rubber 130 shown in FIG. The strength is high.
  • FIG. 9A and FIG. 9B In the joining method of the present embodiment shown in FIG. 27A to FIG. 27F, the configuration other than the aluminum pipe 20 having the partition wall 23 inside and the plurality of rubbers 30 inserted into the aluminum pipe 20 is shown in FIG. 9A and FIG. This is the same as the fifth embodiment of 9B. Therefore, the same components as those shown in FIGS. 9A to 9B are denoted by the same reference numerals and description thereof is omitted.
  • the aluminum pipe 20 of the present embodiment includes an outer wall 24 having a rectangular cross section extending in the direction of the axis L, and a partition wall 23 provided inside the outer wall 24.
  • the space inside the aluminum pipe 20 is divided into four by a cross-shaped partition wall 23 in plan view.
  • the cross-sectional shape is not limited to a quadrangle, and may be an arbitrary shape.
  • the indenter 43 of the present embodiment is provided with a notch 43c in accordance with the shape of the partition wall 23.
  • the caulking can be completed without interfering with the aluminum pipe 20 even when the rubber 30 is pressed.
  • the plurality of rubbers 30 (four in this embodiment) are used for caulking and joining, stress concentration due to deformation can be prevented and the load on the steel member 10 and the aluminum pipe 20 can be reduced.
  • the shape of the rubber 30 of the present embodiment is not particularly limited.
  • the corners of the four rubbers 30 that are inserted may be rounded to reduce the load on the corners of the aluminum pipe 20 and prevent cracking and damage.
  • C chamfering may be performed similarly to R chamfering.
  • the shape of the four rubbers 30 to be inserted is columnar, but a steel L-shaped angle 46 may be disposed along the partition wall 23 inside the aluminum pipe 20. Thereby, the load concerning the partition wall 23 can be reduced and a deformation
  • FIGS. 28A and 28B The joining method of this embodiment shown in FIGS. 28A and 28B is the same as that of the fifth embodiment of FIGS. 9A and 9B except for the components 10 and the aluminum pipe 20 being joined in an inclined state. is there. Therefore, the same components as those shown in FIGS. 9A to 9B are denoted by the same reference numerals and description thereof is omitted.
  • the aluminum pipe 20 of this embodiment has an end face 25 that is inclined with respect to the axis L.
  • the component 10 is bent and placed on the inclined surface 42c.
  • the aluminum pipe 20 is placed in a state where the inclined end surface 25 is in contact with the inclined surface 42 c and is caulked and joined to the component 10. Therefore, the component 10 and the aluminum pipe 20 are caulked and joined in an inclined state.
  • Both end faces 30b, 30c of the rubber 30 of the present embodiment are formed and arranged in parallel with the inclined end face 25 of the aluminum pipe 20.
  • the pressing surface 43 d of the indenter 43 is formed in parallel with the end surfaces 30 b and 30 c of the rubber 30.
  • the joining method of this embodiment is the same as that of the fifth embodiment of FIGS. 9A and 9B except for joining in a state in which the deformation of the component 10 is constrained by the fixing jig 47. It is. Therefore, the same components as those shown in FIGS. 9A to 9B are denoted by the same reference numerals and description thereof is omitted.
  • the component 10 of this embodiment includes a bottom wall 11 and a standing wall portion 18 extending from the bottom wall 11 in the axis L direction.
  • the aluminum pipe 20 may have a circular cross-sectional shape before caulking (see the broken line in FIG. 29A) or a rectangular shape (see the broken line in FIG. 29B), and the shape is not particularly limited.
  • a fixing jig 47 for suppressing deformation is provided outside the component 10.
  • the fixing jig 47 is disposed along the standing wall portion 18 and is fixed from the direction of the arrow in the figure so as not to move outward.
  • the plate-like fixing jig 47 is used, but the shape of the fixing jig 47 is not limited to this, and may be any shape that can suppress deformation.
  • the component 10 when the fixing jig 47 is not provided, when the caulking is joined, the component 10 may be deformed to warp (see FIG. 29D). However, by restraining the deformation of the component 10 by the fixing jig 47, it is possible to suppress deformation such as warping of the component 10 due to the pipe expansion deformation of the aluminum pipe 20 (see FIG. 29E).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

La présente invention concerne un procédé d'assemblage d'éléments qui consiste en la préparation d'un élément en acier (10) ayant une paroi inférieure (11) dans laquelle un trou (15) est pratiqué, et un tuyau en aluminium creux (20). Le tuyau en aluminium (20) est introduit à travers le trou (15) dans l'élément en acier (10) et passe à travers la paroi inférieure (11), un caoutchouc (30) est introduit à l'intérieur du tuyau en aluminium (20), et le caoutchouc (30) est comprimé dans le sens de l'axe (L) du tuyau en aluminium (20) et amené à se détendre vers l'extérieur depuis l'intérieur. En résultat de ce qui précède, au moins une section du tuyau en aluminium (20) introduit à travers le trou (15) subit une déformation d'élargissement et est assemblée par emboutissage à la paroi inférieure (11). Ce procédé d'assemblage d'éléments réduit la charge sur les éléments, améliore la résistance du joint, et permet aux deux éléments d'être assemblés à un coût réduit.
PCT/JP2016/050046 2015-02-06 2016-01-04 Procédé d'assemblage d'éléments WO2016125507A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16746338.9A EP3254781B1 (fr) 2015-02-06 2016-01-04 Procédé d'assemblage d'éléments
CN201680008666.9A CN107206464B (zh) 2015-02-06 2016-01-04 构件的接合方法
US15/546,021 US20180015527A1 (en) 2015-02-06 2016-01-04 Method for joining members
US16/352,740 US20190210089A1 (en) 2015-02-06 2019-03-13 Method for joining members
US16/352,732 US20190210088A1 (en) 2015-02-06 2019-03-13 Method for joining members

Applications Claiming Priority (4)

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JP2015-022573 2015-02-06
JP2015022573 2015-02-06
JP2015124075A JP6454233B2 (ja) 2015-02-06 2015-06-19 部材の接合方法
JP2015-124075 2015-06-19

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US16/352,740 Division US20190210089A1 (en) 2015-02-06 2019-03-13 Method for joining members
US16/352,732 Division US20190210088A1 (en) 2015-02-06 2019-03-13 Method for joining members

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WO2018061684A1 (fr) * 2016-09-28 2018-04-05 株式会社神戸製鋼所 Procédé d'assemblage d'éléments
JP2018161681A (ja) * 2017-03-27 2018-10-18 株式会社神戸製鋼所 部材の接合方法及び装置
WO2020100483A1 (fr) * 2018-11-14 2020-05-22 株式会社神戸製鋼所 Procédé de formation de perle et élément de structure
WO2021019966A1 (fr) * 2019-07-31 2021-02-04 株式会社神戸製鋼所 Boîtier de batterie pour véhicule électrique et procédé pour la fabrication de celui-ci
JP2021058926A (ja) * 2019-10-09 2021-04-15 株式会社神戸製鋼所 部材の接合方法
WO2022049971A1 (fr) * 2020-09-03 2022-03-10 株式会社神戸製鋼所 Boîtier de batterie pour véhicules électriques et procédé de fabrication

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US4320568A (en) * 1980-02-14 1982-03-23 Northern Engineering Industries Limited Method of expanding tubular members
JPH05293887A (ja) * 1992-04-20 1993-11-09 Sekisui Chem Co Ltd ライニング管継手の製造方法
JPH09192760A (ja) * 1996-01-19 1997-07-29 Nepon Inc 板部材と管部材との接合方法
JP2000210738A (ja) * 1998-11-20 2000-08-02 Katsuyoshi Moriyama プレス成形品を含む構造体とその製造方法
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US4320568A (en) * 1980-02-14 1982-03-23 Northern Engineering Industries Limited Method of expanding tubular members
JPH05293887A (ja) * 1992-04-20 1993-11-09 Sekisui Chem Co Ltd ライニング管継手の製造方法
JPH09192760A (ja) * 1996-01-19 1997-07-29 Nepon Inc 板部材と管部材との接合方法
JP2000210738A (ja) * 1998-11-20 2000-08-02 Katsuyoshi Moriyama プレス成形品を含む構造体とその製造方法
JP2007283323A (ja) * 2006-04-13 2007-11-01 Showa Denko Kk 部材同士の接合方法

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Publication number Priority date Publication date Assignee Title
JP2018051588A (ja) * 2016-09-28 2018-04-05 株式会社神戸製鋼所 部材の接合方法
US10843251B2 (en) 2016-09-28 2020-11-24 Kobe Steel, Ltd. Method for joining members
WO2018061684A1 (fr) * 2016-09-28 2018-04-05 株式会社神戸製鋼所 Procédé d'assemblage d'éléments
JP2018161681A (ja) * 2017-03-27 2018-10-18 株式会社神戸製鋼所 部材の接合方法及び装置
US11198172B2 (en) 2017-03-27 2021-12-14 Kobe Steel, Ltd. Method and device for joining members
EP3881949A4 (fr) * 2018-11-14 2022-08-03 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) Procédé de formation de perle et élément de structure
WO2020100483A1 (fr) * 2018-11-14 2020-05-22 株式会社神戸製鋼所 Procédé de formation de perle et élément de structure
JP2020078823A (ja) * 2018-11-14 2020-05-28 株式会社神戸製鋼所 ビード形成方法および構造部材
WO2021019966A1 (fr) * 2019-07-31 2021-02-04 株式会社神戸製鋼所 Boîtier de batterie pour véhicule électrique et procédé pour la fabrication de celui-ci
JP2021023946A (ja) * 2019-07-31 2021-02-22 株式会社神戸製鋼所 電動車両用バッテリーケースおよびその製造方法
JP7220637B2 (ja) 2019-07-31 2023-02-10 株式会社神戸製鋼所 電動車両用バッテリーケースおよびその製造方法
JP2021058926A (ja) * 2019-10-09 2021-04-15 株式会社神戸製鋼所 部材の接合方法
WO2021070571A1 (fr) * 2019-10-09 2021-04-15 株式会社神戸製鋼所 Procédé d'assemblage d'éléments
JP2022042851A (ja) * 2020-09-03 2022-03-15 株式会社神戸製鋼所 電動車両用バッテリーケースおよび製造方法
WO2022049971A1 (fr) * 2020-09-03 2022-03-10 株式会社神戸製鋼所 Boîtier de batterie pour véhicules électriques et procédé de fabrication
JP7169326B2 (ja) 2020-09-03 2022-11-10 株式会社神戸製鋼所 電動車両用バッテリーケースおよび製造方法

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