WO1999001241A1 - Procede d'assemblage de toles metalliques - Google Patents

Procede d'assemblage de toles metalliques Download PDF

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Publication number
WO1999001241A1
WO1999001241A1 PCT/JP1997/002297 JP9702297W WO9901241A1 WO 1999001241 A1 WO1999001241 A1 WO 1999001241A1 JP 9702297 W JP9702297 W JP 9702297W WO 9901241 A1 WO9901241 A1 WO 9901241A1
Authority
WO
WIPO (PCT)
Prior art keywords
punch
die
metal
joined
sheets
Prior art date
Application number
PCT/JP1997/002297
Other languages
English (en)
Japanese (ja)
Inventor
Fujio Nakazono
Tadashiro Kusaka
Original Assignee
Sanyo Machine Works, Ltd.
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
Application filed by Sanyo Machine Works, Ltd. filed Critical Sanyo Machine Works, Ltd.
Priority to JP50841299A priority Critical patent/JP4038248B2/ja
Priority to PCT/JP1997/002297 priority patent/WO1999001241A1/fr
Publication of WO1999001241A1 publication Critical patent/WO1999001241A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting
    • F16B5/045—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting without the use of separate rivets
    • 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
    • B21D39/03—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 otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures

Definitions

  • the present invention relates to a method of locally plastically deforming and joining a plurality of superposed metal sheets by drawing and upsetting.
  • Japanese Patent Publication No. Sho 18-18259 describes an example of an apparatus for performing this type of bonding.
  • this known device has a die (2) and a punch (4) which are coaxially aligned as main components.
  • the die (2) and the punch (4) can move relative to each other in the axial direction.
  • the die (2) is placed on the upper side as a stationary member, and the punch (4) is placed on the lower side as a movable member. It is.
  • the die (2) is composed of a plurality of dividing walls (2b) forming the peripheral wall of the die hole (2a) and an anvil (2c) forming the bottom of the die hole (2a).
  • the part (2b) is elastically supported so that it can be expanded.
  • the punch (4) is composed of a punch body (4a) and a stripper (4b) arranged on the outer periphery thereof, and shows a case where the stripper (4b) is formed of an elastic material.
  • FIGS. 6 (A) to 6 (D) sequentially show the process of joining two superposed metal sheets (6, 8), and FIG. 6 (A) shows the process of joining the metal sheets (6, 8) to be joined.
  • Fig. 6 (B) shows the state of the punch body (4a) during the advance stroke of the punch body (4a). This shows the state when the tip abuts against the thin metal plate (8).
  • the punch body (4a) advances the punch body (4a) and the punch body (4a) changes the material of the thin metal plate (6, 8) to the die hole (2) in the die (2).
  • the metal sheet (6, 8) is locally plastically deformed, and forms a cylindrical bulge (10) by cooperation of the die (2) and the punch body (4a).
  • the punch body (4a) advances further, as shown in Fig. 6 (D)
  • the bottom (12) of the cylindrical bulge (10) formed in the above-mentioned drawing process is replaced by the anvil (2a).
  • the bulging part (10) formed into a cylindrical shape in the drawing process has a roughly frustoconical shape, and the bottom (12) of the bulging part (10) is the trunk.
  • the diameter is larger than (14).
  • the bond strength of the metal ledges (6, 8) joined as described above is determined by the resistance to “displacement” when loads are applied in opposite directions in the direction parallel to the thin metal plates (6, 8). It is measured over two parameters of the resistance to "peeling" when the metal sheets (6, 8) are loaded in opposite directions in the direction perpendicular to each other.
  • the greater the degree of lateral bulging of the bottom (12) of the bulging portion (10) (indicated by the symbol A in Fig. 2), the greater the resistance can be obtained.
  • the thickness of the bulge (10) at the body (14) tends to be insufficient (indicated by the symbol B in Fig.
  • an object of the present invention is to provide a method capable of obtaining higher bonding strength without depending on a change in the shape and structure of the bulging portion itself.
  • DISCLOSURE OF THE INVENTION The present invention relates to a method of locally joining and plastically deforming a plurality of superposed metal sheets by drawing and upsetting using a die and a punch. The problem was solved by arranging between the punch and the metal plate on the side in contact with the punch. Due to the lateral extension of the secondary material during upsetting, the lateral extension of the material to be joined is increased, resulting in a greater coupling force than in the conventional method.
  • the auxiliary material is a material that is more malleable than the material to be joined.
  • the auxiliary material is made of aluminum.
  • the die and the punch are arranged coaxially, the plurality of metal sheets to be combined are arranged between the die and the punch in a state of being overlapped, and the auxiliary material is arranged between the metal sheet and the punch,
  • the die or punch is advanced, and the metal thin plate is squeezed together with the auxiliary material by the cooperation of the die and the punch to form a cylindrical expanded portion in the metal thin plate.
  • the bottom of the portion is swaged between the anvil and the punch of the die, and the bottom of the bulging portion and the auxiliary material are laterally extended to have a diameter larger than the trunk of the bulging portion.
  • FIG. 1 is a cross-sectional view of a joint portion of a sheet metal joined by the method of the present invention.
  • FIG. 2 is a cross-sectional view of a joining portion of a metal sheet joined by a conventional technique.
  • FIG. 3 is a sectional view showing the first embodiment over time.
  • FIG. 4 is a sectional view showing the second embodiment over time.
  • FIG. 5A is a half cross-sectional view illustrating a specific configuration of the die.
  • FIG. 5B is a side view of the die of FIG. 5A.
  • FIG. 5C is a plan view of the die of FIG. 5A.
  • FIG. 6 is a sectional view showing a conventional technique over time.
  • BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 shows a bulged portion (1) when two metal sheets (6, 8) are joined according to the present invention. 0).
  • the present invention uses an auxiliary material (16) different from the material to be bonded (6, 8), thereby increasing the upsetting.
  • the extent to which the bottom portion (12) of the bulging portion (10) extends in the lateral direction becomes larger than before. That is, as shown by the symbol A in FIG.
  • the lateral extension of the joined members (6, 8) is increased by the force of the sub-member (16) extending in the transverse direction during upsetting, and the symbol B
  • the dimensions of the torso (14) indicated by are the same as the conventional one. Therefore, the sheet metal joined by the method of the present invention can obtain a larger binding force than the sheet joined by the conventional method. Such an effect is further promoted by using a material having higher malleability as the auxiliary material (16) than the material to be joined (6, 8).
  • FIG. Fig. 3 (A) to (D) show the process of joining two superimposed thin metal plates (6, 8) by using a device equipped with a die (20) and a punch (40) in four stages. It is a thing.
  • the punch body (42) is stationary in Figs. 3 (A) and 3 (D), and Figs. 3 (B) and (C) show the momentary movement of the punch body (42) during its advance. The state is shown. In other words, the punch body (42) is
  • the sub-material (16) previously processed into a predetermined shape is placed on the end face of the punch body (42).
  • the secondary material (16) has a disk shape having substantially the same diameter as the punch body (42).
  • the thickness of the auxiliary material (16) depends on the thickness of the workpieces (6, 8), their materials, and the punch body.
  • the dimensions indicated by reference numerals A and B in Fig. 1 are the most appropriate values. Is determined so that The auxiliary material (16) may be supplied manually by an operator, but a device for automatic supply may be used. Then, the thin metal plates (6, 8) to be joined are placed in an overlapping manner between the die (20) and the punch (40), and the punch (40) is moved toward the die (20). As shown in A), the sheet metal (6, 8) is placed between the die (20) and the punch (40), specifically, the stripper (22) of the die (20) and the stripper of the punch (40). (44).
  • FIG. 3 (B) shows a state at the time when the punch body (42) has advanced and the sub-member (16) at the tip thereof has contacted the thin metal plate (8).
  • the punch body (42) continues to advance and, as shown in Fig. 3 (C), draws the sheet metal (8, 9) by cooperation with the die (20).
  • the punch body (42) that advances is used to put the material of the metal sheet (8, 9) together with the auxiliary material (16) into the drawing space defined by the die hole (20a) and the punch body (42). It is squeezed to form a cylindrical bulge (10).
  • the swollen portion (10) at this point has a bottomed cylindrical shape with a bottom (12) and a body (14) corresponding to the die hole (20a).
  • the bottom part (12) and the sub-material (16) of the bulging part (10) become the anvil (24) and the punch body (42).
  • the material of the bottom (12) extends laterally, ie radially outward of the bulge (10).
  • the auxiliary material (16) is also set up at the same time, the lateral spreading of the metal sheets (6, 8) constituting the bottom (12) is promoted.
  • the outer diameter of the bottom (12) of the bulging portion (10) becomes larger than the outer diameter of the trunk (14) of the bulging portion (10).
  • the spread of the metal sheet (8) located inside the bulging portion (10) is significantly increased as compared with the conventional one, so that the two metal sheets (6, 8) become Strongly connected to each other.
  • FIG. 4 (A) a thin metal plate (6, 8) and a long material (18) are stacked and placed between a die (20) and a punch (40).
  • (40) is moved to the die (20) side, and these are moved between the die (20) and the punch (40), specifically, the partition wall (22) of the die (20) and the pan (22). Hold it between the strip (44) and the strip (40).
  • FIG. 4 (B) shows the state when the end surface of the punch body (42) comes into contact with the material (18) during the advance stroke, in other words, the state at the start of punching. Then, as shown in Fig.
  • the bottom part (12) and the sub-material (16) of the bulging part (10) become the anvil (24) and the punch body (42).
  • the material of the bottom (12) and the secondary material (16) extends laterally, ie radially outward of the bulge (10).
  • the secondary material (16) is also installed at the same time, the lateral spreading of the bottom (12) is promoted.
  • the outer diameter of the bottom (12) of the bulging portion (10) is larger than the outer diameter of the trunk (14) of the bulging portion (10).
  • the spread of the metal sheet (8) located inside the bulging portion (10) is significantly increased as compared with the conventional case, and as a result, the two metal sheets (6, 8) Strongly connected to each other.
  • the joining is completed at the same time as the upsetting, and thereafter, the punch (40) is retracted to take out the joined metal sheets (6, 8).
  • the die (20) is composed of a die body (21) having a cylindrical anvil (24) formed at the tip and a pair of partition walls (22) supported to be elastically expandable. Including. Each partition (22) is rotatably supported on a die body (21) about a pin (26).
  • the dividing wall (22) has a recess (22a) with a semicircular cross section on the surface facing each other at the upper end of the figure, and a compression coil on the opposite side, that is, the lower end of the figure. It has a seat (22b) for receiving the end of the spring (28).
  • the upper ends in the drawing are normally urged to approach each other, and a pair of concave portions (22a) form a cylindrical die hole (20a).
  • the peripheral wall surface of the die hole (20a) is formed by the recess (22a) of the dividing wall (22).
  • the bottom is formed by an anvil (24).
  • the dividing wall (22) of the die (20) is supported so as to be elastically expandable. Due to the spring force of the compression coil spring (28), the dividing wall (22) maintains the die hole (20a) in a predetermined shape without enlarging during the drawing process. A bulge (10) of the shape and dimensions is formed. Also, when the bottom (12) of the bulging portion (10) extends radially outward during the upsetting process, the dividing wall (22) is pushed laterally and expands (Fig. 3 (D), Figure 4 (D)). This facilitates the spreading of the bottom portion (12) of the bulging portion (10), and at the same time, prevents the bulging portion (10) from sticking to the die and completes the joining of the metal sheets (6, 8). ) Becomes easier to remove.
  • the punch (40) comprises a punch body (42) and a stripper (44). Although a stripper (44) molded from an elastic material is illustrated, a compression coil spring may be employed. When the punch body (42) is retracted, a force opposite to the retracting direction of the punch body (42) acts on the metal sheet (6, 8) due to the elastic restoring force of the stripper (44), and the bulging portion ( 10) Remove from the punch body (42). Therefore, the joined metal sheets (6, 8) can be easily taken out.
  • the present invention provides a method of locally bonding a plurality of superposed thin metal sheets by plastically deforming them by drawing and upsetting using a die and a punch, and separates them from the joined thin metal sheets. Since the secondary material is arranged between the punch and the metal plate material on the side in contact with the punch, the lateral extension of the material to be joined increases due to the force that the secondary material extends laterally during upsetting, As a result, a larger coupling force than the conventional method can be obtained.

Abstract

L'invention concerne un procédé d'assemblage de tôles métalliques, selon lequel on utilise une matrice (20) et un poinçon (40) pour créer la déformation plastique locale d'une pluralité de tôles métalliques (6, 8) se chevauchant, par emboutissage et étampage, pour assembler les tôles. On positionne un matériau de support (16), qui est séparé des tôles métalliques (6, 8) que l'on veut assembler, entre la tôle métallique se trouvant sur le côté où se fait le contact avec le poinçon (40) et ledit poinçon (40) pour permettre à la force, produite lorsque le matériau de support (16) s'étend latéralement au moment de l'étampage, d'augmenter l'allongement latéral des feuilles métalliques (6, 8) que l'on veut assembler. On peut ainsi obtenir une plus grande force d'assemblage que celle obtenue selon un procédé classique, laquelle résulte en une résistance de l'assemblage plus élevée, sans que l'on ait à modifier la configuration et la construction des parties allongées elles-mêmes.
PCT/JP1997/002297 1997-07-02 1997-07-02 Procede d'assemblage de toles metalliques WO1999001241A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP50841299A JP4038248B2 (ja) 1997-07-02 1997-07-02 金属薄板の結合方法
PCT/JP1997/002297 WO1999001241A1 (fr) 1997-07-02 1997-07-02 Procede d'assemblage de toles metalliques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/002297 WO1999001241A1 (fr) 1997-07-02 1997-07-02 Procede d'assemblage de toles metalliques

Publications (1)

Publication Number Publication Date
WO1999001241A1 true WO1999001241A1 (fr) 1999-01-14

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Application Number Title Priority Date Filing Date
PCT/JP1997/002297 WO1999001241A1 (fr) 1997-07-02 1997-07-02 Procede d'assemblage de toles metalliques

Country Status (2)

Country Link
JP (1) JP4038248B2 (fr)
WO (1) WO1999001241A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007032839A (ja) * 2005-07-22 2007-02-08 Rasmussen Gmbh 取り付け要素を備えたクランプ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01299738A (ja) * 1988-02-16 1989-12-04 Honeywell Inc 物理的性質の異なる金属を結合する方法
JPH06312228A (ja) * 1993-04-28 1994-11-08 Toyota Motor Corp かしめ装置
JPH07503663A (ja) * 1991-11-27 1995-04-20 ヘンロブ・リミテッド 改良されたパネルクリンチング方法
JPH0839169A (ja) * 1994-07-29 1996-02-13 Natl House Ind Co Ltd ワークの結合装置
JPH08332533A (ja) * 1995-06-08 1996-12-17 Araco Corp 金属板の結合方法および結合装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01299738A (ja) * 1988-02-16 1989-12-04 Honeywell Inc 物理的性質の異なる金属を結合する方法
JPH07503663A (ja) * 1991-11-27 1995-04-20 ヘンロブ・リミテッド 改良されたパネルクリンチング方法
JPH06312228A (ja) * 1993-04-28 1994-11-08 Toyota Motor Corp かしめ装置
JPH0839169A (ja) * 1994-07-29 1996-02-13 Natl House Ind Co Ltd ワークの結合装置
JPH08332533A (ja) * 1995-06-08 1996-12-17 Araco Corp 金属板の結合方法および結合装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007032839A (ja) * 2005-07-22 2007-02-08 Rasmussen Gmbh 取り付け要素を備えたクランプ

Also Published As

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