WO2023100782A1 - Positioning structure and positioning method - Google Patents

Positioning structure and positioning method Download PDF

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Publication number
WO2023100782A1
WO2023100782A1 PCT/JP2022/043665 JP2022043665W WO2023100782A1 WO 2023100782 A1 WO2023100782 A1 WO 2023100782A1 JP 2022043665 W JP2022043665 W JP 2022043665W WO 2023100782 A1 WO2023100782 A1 WO 2023100782A1
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WO
WIPO (PCT)
Prior art keywords
plate member
plate
convex portion
peripheral edge
punch
Prior art date
Application number
PCT/JP2022/043665
Other languages
French (fr)
Japanese (ja)
Inventor
拓也 岡本
Original Assignee
株式会社アマダ
株式会社アマダツール
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 JP2022184685A external-priority patent/JP2023082665A/en
Application filed by 株式会社アマダ, 株式会社アマダツール filed Critical 株式会社アマダ
Publication of WO2023100782A1 publication Critical patent/WO2023100782A1/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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/08—Dies with different parts for several steps in a process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work

Definitions

  • the present disclosure relates to positioning structures and positioning methods.
  • a positioning structure is provided at an edge of a first plate member, and protrudes in a plate thickness direction from one surface side of the first plate member. and a concave portion formed on one surface of the second plate member that can receive the convex portion, and the one surface of the first plate member and the one surface of the second plate member are overlapped so as to face each other to form the second plate member.
  • the movement of the first plate member along one surface of the second plate member is restricted by engaging the convex portion of the first plate member with the concave portion of the second plate member.
  • a positioning method performs a punching process on a first plate material, and forms a convex portion composed of a plastic flow part of a material of the first plate material that protrudes in a punching direction from an edge of the first plate material. a second step of forming a concave portion capable of receiving the convex portion on one surface of the second plate; and a third step of engaging the convex portion of the first plate member with the concave portion of the second plate member to restrict movement of the first plate member along the surface of the second plate member.
  • the convex portion of the first plate protrudes in the plate thickness direction.
  • the convex portion can be formed by plastic flow of the material in the punching direction when forming the edge portion of the first plate by punching.
  • the convex portion of the first plate member is reliably engaged with the concave portion of the second plate member, thereby moving the first plate member along the surface of the second plate member. can be effectively regulated.
  • plate materials can be reliably positioned with respect to each other even when they are made of metal with low plastic fluidity.
  • FIG. 1 is a diagram illustrating a state before positioning by engaging the convex portion of the first plate member and the concave portion of the second plate member.
  • FIG. 2 is a diagram for explaining a state in which the convex portion of the first plate member and the concave portion of the second plate member are engaged and positioned.
  • FIG. 3 is a cross-sectional explanatory view for explaining the configuration of a punch press and a die used for processing the first plate material.
  • FIG. 4 is a cross-sectional explanatory view for explaining a state in which convex portions are formed on the first plate member.
  • FIG. 5 is a cross-sectional explanatory view of a die used when forming a convex portion on the first plate material.
  • FIG. 6 is a diagram illustrating a state before positioning by engaging the convex portion of the first plate member and the concave portion of the second plate member in the modified example.
  • FIG. 7 is a diagram for explaining a state in which the convex portion of the first plate member and the concave portion of the second plate member are engaged and positioned in the modified example.
  • FIG. 8 is a diagram for explaining a state in which the convex portion of the first plate member and the concave portion of the second plate member are engaged and positioned.
  • FIG. 9 is a diagram showing the AA cross section of FIG.
  • FIG. 10 is an enlarged view of a region surrounded by broken lines in FIG. FIG.
  • FIG. 11 is a diagram illustrating a state before positioning by engaging the convex portion of the first plate member and the concave portion of the second plate member.
  • 12A and 12B are plan views for explaining a method of forming a convex portion.
  • FIG. 13A and 13B are plan views for explaining a method of forming a convex portion.
  • FIG. 14A and 14B are plan views for explaining a method of forming a convex portion.
  • FIG. FIG. 15 is a plan view illustrating a method of forming recesses.
  • FIG. 16 is a plan view illustrating a method of forming recesses.
  • FIG. 17 is a plan view illustrating a method of forming recesses.
  • FIG. 18A and 18B are plan views for explaining a method of forming a convex portion.
  • FIG. 19A and 19B are plan views for explaining a method of forming convex portions.
  • FIG. 20 is a plan view for explaining a method of forming convex portions.
  • FIG. 1 is a diagram illustrating a state before positioning by engaging the convex portion 13 of the first plate member 10 and the concave portion 23 of the second plate member 20 .
  • FIG. 2 is a diagram illustrating a state in which the protrusion 13 of the first plate member 10 and the recess portion 23 of the second plate member 20 are engaged and positioned.
  • the positioning structure according to the present embodiment is provided at the edge of the first plate member 10, and consists of a plastic flow portion of the material of the first plate member 10 that protrudes in the plate thickness direction from one surface 11 side of the first plate member 10.
  • a convex portion 13 and a concave portion 23 formed on one surface 21 of the second plate member 20 and capable of receiving the convex portion 13 are provided.
  • the first plate member 10 moves along one surface 21 of the second plate member 20 by overlapping the first plate member 10 so as to face the surface 21 and engaging the convex portion 13 of the first plate member 10 with the concave portion 23 of the second plate member 20 . to regulate.
  • the first plate member 10 is provided with a punched hole 15 penetrating in the plate thickness direction in a planar region inside the outer peripheral edge forming the outline of the first plate member 10, and the convex portion 13 is a It is provided at the inner peripheral edge portion 15 a of the punched hole 15 , which is the edge portion of the plate member 10 .
  • a punched hole 15 which is an opening penetrating in the plate thickness direction (downward in FIG. 1), is provided in a planar region inside the outer peripheral edge (not shown) forming the outline of the first plate 10. It is An inner peripheral edge portion 15a of the punched hole 15 is formed with a convex portion 13 projecting along the plate thickness direction. The convex portion 13 protrudes so as to stand on one surface 11 (hereinafter simply referred to as “surface 11”) of the first plate member 10 .
  • the convex portion 13 is formed from a plastic flow portion which is the material of the first plate member 10 that plastically flows when the punched hole 15 is formed by punching.
  • the portion corresponding to the convex portion 13 is deformed so as to be slightly pulled toward the surface 11 side by the action of the punch when processing the punched hole 15.
  • the perimeter of the perforation 15 opposite the surface 11 may include a deformed portion, the so-called "slip" deformation.
  • the shape of the tip 13a of the projection 13 is formed at an acute angle ( ⁇ 1 ⁇ 90°).
  • the convex portion 13 is an annular convex portion continuously extending along the circumferential direction of the punched hole 15 .
  • the convex portion 13 is annular.
  • the convex portion 13 has an annular shape.
  • the first plate member 10 is a stainless steel plate member having a predetermined thickness within the range of 1 mm to 3 mm.
  • the height H is set to 0.1 mm or more and 0.6 mm or less.
  • the material and thickness of the plate material are not limited to these.
  • a plate made of aluminum or iron may be used as the plate.
  • the plate thickness may be in the range of 0.5 mm to 5 mm. Even in this case, the amount of projection of the convex portion with respect to the surface of the plate may be set to 0.1 mm or more and 0.6 mm or less as in the present embodiment.
  • a concave portion 23 capable of receiving the convex portion 13 of the first plate member 10 is formed on one surface 21 of the second plate member 20 (hereinafter simply referred to as "surface 21").
  • the recess 23 is an annular groove extending continuously along the protrusion 13 so as to be able to receive the protrusion 13 .
  • the concave portion 23 is annular.
  • the dimension of the maximum depth D0 of the concave portion 23 with respect to the surface 21 of the second plate member 20 is set to at least the height H of the convex portion 13 or more so that the convex portion 13 can be received. (H ⁇ D0).
  • a center portion 27 of the surface 21 surrounded by the concave portions 23 is formed to protrude in a truncated cone shape so as to protrude above the surface 21 .
  • the center portion 27 may be formed to have a height that protrudes from the surface 21 with respect to the surface 21 as illustrated, or may be formed to have the same height as the surface 21 or be lower than the surface 21 .
  • the bottom surface 25 does not have to be parallel to the surface 21 as long as the condition (H ⁇ D0) is satisfied that the maximum depth D0 is equal to or greater than the height H of the protrusion 13 in the entire area of the bottom surface 25, and the bottom surface 25 may be curved. good too.
  • the inner surface of the recess 23 includes a bottom surface 25 , a first side wall surface 29 formed closer to the central portion 27 than the bottom surface 25 , and a second side wall surface 31 formed outside the bottom surface 25 .
  • a bottom surface 25 of the recess 23 is formed parallel to the surface 21 .
  • the first side wall surface 29 of the recess 23 forms an angle ⁇ 2 with respect to the normal direction of the surface 21, as shown in FIG.
  • the magnitude of the angle ⁇ 2 is 0° or more and 40° or less.
  • the second side wall surface 31 of the recess 23 forms an angle ⁇ 3 with respect to the normal direction of the surface 21 .
  • the magnitude of the angle ⁇ 3 is 0° or more and 55° or less.
  • angles ⁇ 2 and ⁇ 3 may be appropriately selected in consideration of the material of the second plate member 20 and the like.
  • the angle ⁇ 2 may be 20° or more and 35° or less
  • the angle ⁇ 3 may be 35° or more and 50° or less.
  • the surface 11 of the first plate member 10 and the surface 21 of the second plate member 20 are overlapped so as to face each other, so that the surface 11 of the first plate member 10 is formed with
  • the convex portion 13 and the concave portion 23 formed on the surface 21 of the second plate member 20 are engaged with each other.
  • This engagement restricts movement of the first plate member 10 along the surface 21 of the second plate member 20 .
  • the movement of the first plate member 10 in the direction along the surface 21 of the second plate member 20 (X direction, which is the horizontal direction in FIG. 2, or the direction perpendicular to the paper surface) is restricted, position.
  • the surface 11 of the first plate member 10 and the surface 21 of the second plate member 20 are in surface contact so as to be weldable.
  • the punched hole 15 of the first plate member 10 has a circular shape when viewed from the direction of the axis 15b (the Z direction in FIG. 2), and the convex portion 13 formed on the inner peripheral edge portion 15a of the punched hole 15 is , the axis 15b as a center axis.
  • the tip 13a of the projection 13 is formed in a circular shape having a predetermined diameter ⁇ a which is substantially the same as the diameter of the punched hole 15. As shown in FIG. Note that the predetermined diameter is set to 2 mm to 5 mm.
  • the recess 23 of the second plate member 20 is an annular groove capable of receiving the protrusion 13, and the protrusion 13 and the recess 23 are engaged.
  • the central axis of the annular shape of the concave portion 23 coincides with the axis 15b of the convex portion 13.
  • the depth D of the recessed portion 23 (based on the surface 21) of the second plate member 20 at the position facing the tip 13a of the projected portion 13 in the state where the projected portion 13 and the recessed portion 23 are engaged is the first The dimension is equal to or greater than the height H of the projection 13 with respect to the surface 11 of the plate member 10 (H ⁇ D).
  • the diameter ⁇ c at the position where the second side wall surface 31 of the concave portion 23 opens to the surface 21 of the second plate member 20 is, as shown in FIG. ⁇ b ( ⁇ c> ⁇ b) at the radially outermost position centered on the axis 15b in the range protruding from the surface of the .
  • This configuration allows the concave portion 23 to receive the convex portion 13 .
  • the tip 13a of the convex portion 13 may contact the inner surface of the concave portion 23 as shown in FIG.
  • the recess 23 may be formed so that the tip 13 a of the projection 13 contacts the first side wall surface 29 of the recess 23 .
  • the concave portion 23 is formed so as to be in surface contact with the surface 21 of the plate material 20 so as to be weldable.
  • the angle .theta.2 of the first side wall surface 29 of the recess 23 is smaller than the angle .theta.3 of the second side wall surface 31 (.theta.2 ⁇ .theta.3).
  • the tip 13a of the projection 13 is located at the position of .
  • the angle ⁇ 1 of the tip 13a of the projection 13 is set to an angle equal to or less than the angle ⁇ 3 of the second side wall surface 31 of the recess 23 ( ⁇ 1 ⁇ ⁇ 3) may be set.
  • FIG. 3 is a cross-sectional explanatory view for explaining the configuration of the punch press and the mold 110 used for processing the first plate material 10.
  • FIG. 4 is a cross-sectional explanatory view illustrating a state in which the convex portion 13 is formed on the first plate member 10 using the mold 110.
  • FIG. 5 is a cross-sectional explanatory view of the die mold 111 used when forming the convex portion 13 on the first plate member 10. As shown in FIG.
  • the convex portion 13 of the first plate member 10 is formed using a mold 110 that is used by being attached to a punch press (not shown).
  • a die 110 used for punching the punched hole 15 includes a die 111 having a chamfered surface 111b formed in an opening 111a and a punch 113 for punching the first plate material 10 in cooperation with the die 111 .
  • the die 111 is configured to be fixed to the lower turret (not shown) of the punch press. As shown in FIGS. 3 and 5, the upper surface 111c of the die 111 is a flat surface, and the surface 111 of the workpiece (the first plate member 10 before forming the convex portion 13) is placed on the upper surface 111c while being fixed to the punch press. It is configured so that it can be placed horizontally on the top.
  • the die 111 has an opening 111a that opens in the upper surface 111c and penetrates in the normal direction of the upper surface 111c.
  • a chamfered surface 111b is formed along the periphery of the opening 111a.
  • the depth from the upper surface 111c of the die 111 to the position where the chamfered surface 111b intersects the inner peripheral surface of the opening 111a is defined as the depth D1 of the chamfered surface 111b.
  • the depth D1 is set to 0.1 mm or more and 0.6 mm or less.
  • the inclination angle ⁇ 4 of the chamfered surface 111b with respect to the normal direction of the upper surface 111c is set to an angle that allows the shape of the tip 13a of the projection 13 to be formed at an acute angle ( ⁇ 1 ⁇ 90°).
  • the tilt angle ⁇ 4 is an acute angle.
  • the inclination angle ⁇ 4 of the chamfered surface 111b is also the second side of the recess 23 so that the angle ⁇ 1 of the tip 13a of the projection 13 is equal to or less than the angle ⁇ 3 of the second side wall surface 31 of the recess 23 ( ⁇ 1 ⁇ 3).
  • the angle may be set to be less than the angle ⁇ 3 of the wall surface 31 ( ⁇ 4 ⁇ 3).
  • the punch 113 has a cylindrical punch guide 115 that is vertically movably supported by the upper turret of the punch press.
  • a stripper plate 117 having a through hole 117a in the center is attached to the tip of the punch guide 115 (lower end in FIG. 3).
  • a retainer collar 121 having a through hole through which the punch body 119 can be inserted is provided on the rear end surface (upper end surface in FIG. 3) of the punch guide 115 .
  • the retainer collar 121 is attached to the punch guide 115 with an O-ring 121a interposed therebetween.
  • the punch 113 further includes a punch body 119 arranged inside the punch guide 115 and vertically movable with respect to the punch guide 115 .
  • the tip of the punch body 119 (lower end in FIG. 3) is a small-diameter punch tip 119a.
  • the punch body 119 extends vertically movably through the retainer collar 121, and a punch head 123 is screwed to the rear end (upper end in FIG. 3).
  • the punch body 119 is arranged in the punch guide 115 so that it can move up and down while the punch tip 119a is inserted through the through hole 117a of the stripper plate 117 at the lower end of the punch guide 115.
  • a stripper spring 125 is accommodated in a compressed state between the punch head 123 and the retainer collar 121 provided on the upper surface of the punch guide 115 .
  • the punch body 119 is urged upward by the compression repulsive force of the stripper spring 125 .
  • a cylindrical spring cover 127 that accommodates the stripper spring 125 is integrally fixed to the upper surface of the retainer collar 121 .
  • a stepped portion 127b that protrudes radially inward is formed on the inner peripheral surface of the upper end portion of the spring cover 127 .
  • the lower surface of the stepped portion 127b is in contact with the upper surface of a flange portion 123a formed on the punch head 123 and protruding radially outward.
  • the punch head 123 is pressed by the punch press.
  • the stripper plate 117 comes into contact with the upper surface of the first plate member 10 and presses the first plate member 10 .
  • the punch tip 119a punches out the first plate material 10, and the opening 111a of the die 111 arranged concentrically. enter inside.
  • a predetermined radial clearance is set between the outer peripheral surface of the punch tip 119 a and the inner peripheral surface of the opening 111 a of the die 111 . According to this clearance, a plastic flow portion where the material plastically flows is formed in the punching direction (lower surface side in FIG. 4) of the punched hole 15 of the first plate member 10 .
  • the plastic flow portion of the first plate member 10 formed by the action of the punch tip 119a is formed in the state where the punched holes 15 are formed in the chamfered surface 111b of the die 111 and the first plate member 10, as shown in FIG.
  • the convex portion 13 is formed on the inner peripheral edge portion 15a of the punched hole 15 in the first plate member 10 by being pressed by the side wall of the punch tip 119a.
  • the convex portion 13 is formed in a shape following an annular concave portion having a tip angle ⁇ 4 formed between the surface 11 of the first plate 10, the chamfered surface 111b, and the side wall of the punch tip 119a.
  • the surface of the first plate 10 opposite to the surface 11 on which the projections 13 are formed is in contact with the stripper plate 117, and the plastic flow portion is formed by the chamfered surface 111b and the punch tip 119a. pressed. Therefore, when the plastic flow portion is pressed by the chamfered surface 111b and the punch tip 119a, the convex portion 13 is formed with the back surface pressed by the stripper plate 117. FIG. With this configuration, the convex portion 13 is more reliably formed into a shape that follows the concave portion.
  • the punched holes 15 are formed in the first plate material 10 by punching.
  • plastic flow of the material occurs along the punched hole 15 in the first plate member 10 .
  • An inner peripheral edge portion 15a of the first plate member 10 is formed with a convex portion 13 which is a plastic flow portion generated by the plastic flow of the material.
  • the convex portion 13 is formed on the inner peripheral edge portion 15a of the punched hole 15 and protrudes in the punching direction of the punched hole 15, that is, in the plate thickness direction.
  • a concave portion 23 capable of receiving the convex portion 13 is formed on the surface 21 of the second plate member 20 .
  • a mold (not shown) used for forming the concave portion 23 is a molding mold used by being attached to a punch press.
  • the recess 23 is formed on the surface 21 of the second plate member 20 .
  • the recess 23 may be formed by coining, for example.
  • the molding die has a transfer portion (protrusion) for transferring the concave portion 23 to the surface of the second plate member 20 on the tip surface of the punch body.
  • the projecting portion may be annular such that the recessed portion 23 forms an annular groove extending along the projecting portion 13 (annular projecting portion) capable of receiving the projecting portion 13 .
  • the overall configuration of the molding die differs only in the configuration of the transfer portion, and the rest of the configuration is the same as that of a general molding die (stamping die). Therefore, detailed description of the overall configuration of the mold used for the recess 23 is omitted.
  • the positioning method of this embodiment can be implemented by forming the convex portion 13 and the concave portion 23 as described above. That is, in the positioning method of the present embodiment, the first plate member 10 is punched to form the convex portion 13 made of the plastic flow portion of the material of the first plate member 10 and protruding from the edge portion of the first plate member 10 in the punching direction. a step of forming recesses 23 capable of receiving the protrusions 13 in the surface 21 of the second plate 20; and a step of engaging the convex portion 13 of the first plate member 10 with the concave portion 23 of the second plate member 20 to restrict the movement of the first plate member 10 along the surface 21 of the second plate member 20 .
  • the punching process for the first plate material 10 is a process for forming a punched hole 15 penetrating in the plate thickness direction in a flat area inside the outer peripheral edge forming the outline of the first plate material 10 .
  • the convex portion 13 is formed on the inner peripheral edge portion 15 a of the punched hole 15 , which is the edge portion of the first plate member 10 .
  • the convex portion 13 of the first plate member 10 and the concave portion 23 of the second plate member 20 are engaged with each other. Positioned. Therefore, in order to position both plate members 10 and 20 without positional deviation, convex portions 13 are formed at a plurality of locations on the surface 11 of the first plate member 10, and corresponding plurality of protrusions 13 are formed on the surface 21 of the second plate member 20. A recess 23 is formed at the location. By engaging the protrusions 13 and the recesses 23 of both the plate members 10 and 20, the plate members 10 and 20 can be positioned without any displacement.
  • the convex portion 13 of the first plate member 10 protrudes in the plate thickness direction (punching direction).
  • the convex portion 13 can be formed by plastic flow of the material in the punching direction when the punched hole 15 of the first plate member 10 is formed by punching. Therefore, even when positioning a material with low plastic fluidity, the convex portion 13 having a sufficient height can be easily formed by causing the material to plastically flow in the punching direction.
  • the first plate member 10 is moved along the surface 21 of the second plate member 20 .
  • movement relative movement
  • a part of the surface 21 of the second plate member 20 is raised toward the first plate member 10, and the raised portion is formed in the first plate member 10 by punching holes 15 or recesses 23. do not need to enter the In other words, it is not necessary to flow the material of the second plate member 20 to form the raised portion. Therefore, according to this positioning structure, more reliable positioning can be realized even when the first plate member 10 and the second plate member 20 are made of a material with low plastic flowability.
  • the convex portion 13 is an annular convex portion extending along the circumferential direction of the punched hole 15 and the concave portion 23 is an annular groove extending along the convex portion 13, by engaging the concave portion 23 and the convex portion 13, , the two plates 10, 20 are positioned more accurately.
  • the depth D of the concave portion 23 based on the surface 21 of the second plate 20 is formed to be greater than or equal to the height H of the convex portion 13 based on the surface 11 of the first plate 10 facing the surface 21 of the second plate 20.
  • the surfaces 11 and 21 of the two plate materials 10 and 20 can be aligned (surface contact), so that the two plate materials 10 and 20 can be easily welded in the positioned state. .
  • the tip 13a of the projection 13 having an acute angle contacts the inner surface of the recess 23, so that the projection 13 and the recess 23 are separated from each other. are engaged and positioned, the positioning of the two plates 10, 20 can be performed more accurately.
  • the die 111 having the chamfered surface 111b formed in the opening 111a and the die 111 cooperate with each other in the punching process.
  • a punch 113 for punching the first plate 10 is used, and the convex portion 13 is formed by pressing the plastic flow portion that has been plastically flowed by the action of the punch 113 by the punch 113 and the chamfered surface 111b.
  • the clearance between the punch tip 119a of the punch 113 for punching the first plate material 10 and the opening 111a of the die 111 on which the first plate material 10 can be placed is and by defining the depth D1 of the chamfered surface 111b with reference to the surface of the die 111, the height H of the convex portion 13 with reference to the surface 11 of the first plate member 10 is formed at a predetermined height. .
  • a convex portion 13 which is a plastic flow portion of the first plate member 10 formed by the action of the punch tip 119a of the punch 113 for punching, is formed in a shape following the annular concave portion. Therefore, by adjusting the amount of plastic flow of the metal by adjusting the clearance between the punch tip 119a and the opening 111a of the die 111, and by changing the depth D1 of the chamfered surface 111b of the die 111, the projection 13 with a desired height can be obtained. can be obtained. In order to heighten the convex portion 13, the clearance is increased and the chamfered surface 111b is deepened. However, if the clearance is excessive, the convex portion 13 will not form an acute angle. That is, according to this method, the height H of the projection 13 can be easily changed by changing the clearance between the punch tip 119a and the opening 111a of the die 111 and the depth D1 of the chamfered surface 111b.
  • the depth D1 of the chamfered surface 111b is selected within a range in which the desired height of the projection 13 and the depth D of the recess 23 of the second plate 20 satisfy a predetermined height H that satisfies the relational expression H ⁇ D. be.
  • convex portions are formed without forming through holes in the workpiece.
  • the molds and devices that can be used to form convex portions with conventional positioning structures and positioning methods have, for example, the accuracy of fine adjustment of the height of the punch head, or the accuracy of variations in the bottom dead center of the device. High precision was required.
  • the projections 13 are formed on the surface 11 of the first plate member 10 by forming the punched holes 15 in the first plate member 10 .
  • the convex portion 13 that can be used for positioning is formed on the first plate 10 without considering the accuracy of fine adjustment of the height of the punch head or the accuracy of variations in the bottom dead center of the apparatus. It can be formed on surface 11 .
  • the metal is It is possible to prevent part of the metal from escaping to the edge of the plate during plastic flow.
  • FIG. 6 is an explanatory diagram of a state before engaging and positioning the convex portion 13A of the first plate member 10A and the concave portion 23A of the second plate member 20A according to the modification.
  • FIG. 7 is an explanatory diagram of a positioning structure according to a modified example in which the protrusion 13A of the first plate member 10A and the recess 23A of the second plate member 20A are engaged and positioned.
  • the angle ⁇ 2A of the first side wall surface 29A on the central portion side is greater than the angle ⁇ 3A of the second side wall surface 31A. ( ⁇ 3A ⁇ 2A), and the inner surface of the concave portion 23A that can abut the tip 13Aa of the convex portion 13A in a state where the convex portion 13A of the first plate member 10A and the concave portion 23A of the second plate member 20A are engaged.
  • the positioning structure differs from the positioning structure of the embodiment in that the portion is located near the intersection between the second side wall surface 31A and the bottom surface 25A where the angle ⁇ 3A is small.
  • the tips 13a, 13Aa of the projections 13, 13A are aligned with the bottom surfaces 25, 25A, Alternatively, it is located in the vicinity of the bottom surfaces 25, 25A of the first side wall surface 29A or the second side wall surface 31A of the recesses 23, 23A.
  • the tips 13a, 13Aa of the projections 13, 13A only need to be located near the inner surfaces of the recesses 23, 23A.
  • the height H of the protrusions 13 and 13A and the depth D of the recesses 23 and 23A are It is preferable that the relational expression H ⁇ D/2 is satisfied.
  • the protrusions 13 and 13A and the recesses 23 , 23A may be pressed in the plate thickness direction to bring the tips 13a, 13Aa of the protrusions 13, 13A into close contact with the inner surfaces of the recesses 23, 23A.
  • the first plate member 10 and the second plate member 20 in the engaged state are pressed in the plate thickness direction.
  • the tips 13a and 13Aa of the projections 13 and 13A may be brought into close contact with the recesses 23 and 23A.
  • the angles .theta.1 and .theta.1A may be formed at acute angles equal to or less than a predetermined angle so that the tips 13a and 13Aa are easily brought into close contact with the recesses 23 and 23A by pressing in the plate thickness direction.
  • the angles ⁇ 1 and ⁇ 1A may be 30° or less.
  • the shape of the projections and the shape of the recesses are not limited to annular shapes such as the shapes of the projections 13 and 13A and the shapes of the recesses 23 and 23A.
  • the shape of the convex portion and the shape of the concave portion may be annular such as square or oval.
  • the convex portion may be formed using a die in which a chamfered surface is intermittently formed on the peripheral edge portion of the opening. Then, the recess may be formed using a tip-shaped punch capable of forming a groove at a position capable of receiving the protrusion so that the protrusion and the recess can be engaged with each other.
  • FIG. 8 is a diagram illustrating a state in which the protrusion 53 of the first plate member 50 and the recess 63 of the second plate member 60 are engaged and positioned.
  • FIG. 9 is a diagram showing the AA cross section of FIG.
  • FIG. 10 is an enlarged view of a region surrounded by broken lines in FIG.
  • FIG. 11 is a diagram illustrating a state before engaging and positioning the convex portion 53 of the first plate member 50 and the concave portion 63 of the second plate member 60 .
  • the positioning structure according to the present embodiment is provided at the edge of the first plate member 50, and consists of a plastic flow portion of the material of the first plate member 50 that protrudes in the plate thickness direction from one surface 51 side of the first plate member 50.
  • a convex portion 53 and a concave portion 63 formed on one surface 61 of the second plate member 60 and capable of receiving the convex portion 53 are provided.
  • the first plate member 50 moves along one surface 61 of the second plate member 60 by overlapping the first plate member 50 so as to face the surface 61 and engaging the convex portion 53 of the first plate member 50 with the concave portion 63 of the second plate member 60 . to regulate.
  • the convex portion 53 is provided on the outer peripheral edge portion 50 a forming the contour of the first plate member 50 , which is the edge portion of the first plate member 50 .
  • the positioning structure according to the second embodiment differs from the positioning structure according to the first embodiment in that the convex portion 53 is provided on the outer peripheral edge portion 50 a of the first plate member 50 .
  • the following description will focus on differences from the first embodiment.
  • the first plate member 50 is formed, for example, in a rectangular shape.
  • the outer peripheral edge portion 50a forming the outline of the first plate member 50 is composed of a pair of parallel long sides 50a1 and 50a2 and a pair of parallel short sides 50a3 and 50a4.
  • the second plate member 60 is also formed in a rectangular shape, and the second plate member 60 is one size larger than the first plate member 50 .
  • the shape and size of the second plate member 60 are not limited to this.
  • a convex portion 53 is formed on the outer peripheral edge portion 50a of the first plate member 50 so as to protrude along the plate thickness direction (downward direction in FIG. 9).
  • the convex portion 53 protrudes so as to stand on one surface 51 (hereinafter simply referred to as “surface 51”) of the first plate member 50 .
  • the convex portion 53 is formed from a plastically flowing portion that is the material of the first plate member 50 that plastically flows when the outer peripheral edge portion 50a is formed by punching.
  • two protrusions 53 are provided for one longitudinal side 50a1, and one protrusion 53 is provided for one short side 50a3.
  • the convex portion 53 is a linear convex portion with a predetermined length that extends along the outer peripheral edge portion 50a (the long side 50a1 or the short side 50a3). In other words, when the surface 51 of the first plate member 50 is viewed from the second plate member 60 side (from below in FIG. 9), the convex portion 53 is formed in a straight line.
  • the convex portion 53 is not formed over the entire circumference of the outer peripheral edge portion 50a, but is formed in a part of the outer peripheral edge portion 50a.
  • the portion corresponding to the convex portion 53 is deformed so as to be slightly pulled toward the surface 51 by the action of the punch during processing.
  • the portion located on the opposite side of the convex portion 53 may include a deformed portion called so-called "slip" deformation.
  • a concave portion 63 capable of receiving the convex portion 53 of the first plate member 50 is formed on one surface 61 of the second plate member 60 (hereinafter simply referred to as "surface 61").
  • the recess 63 is a linear groove extending along the protrusion 53 so as to receive the protrusion 53 .
  • a concave portion 63 is formed in a straight line.
  • three concave portions 63 are provided on the surface 61 of the second plate member 60 corresponding to the three convex portions 53 provided on the first plate member 50, and the positions of the three concave portions 63 are , corresponding to the positions of the three projections 53 provided on the .
  • the maximum depth D0 of the concave portion 63 with respect to the surface 61 of the second plate member 60 is set so that the convex portion 53 can be received.
  • the dimension is set to be equal to or greater than the height H from the surface 51 to the tip 53a of the projection 53 (H ⁇ D0).
  • the inner surface of the recess 63 has a bottom surface 64 , a first side wall surface 65 formed inside the bottom surface 64 , and a second side wall surface 66 formed outside the bottom surface 64 .
  • the relationship between the bottom surface 64, the first side wall surface 65, and the second side wall surface 66 in the concave portion 63 according to the second embodiment is the same as in the first embodiment. It is the same as the relationship between the bottom surface 25, the first side wall surface 29, and the second side wall surface 31 in the recess 23 shown.
  • the surface 51 of the first plate member 50 and the surface 61 of the second plate member 60 are overlapped so as to face each other, so that the surface 61 of the first plate member 50
  • the convex portion 53 formed on the second plate member 60 engages with the concave portion 63 formed on the surface 61 of the second plate member 60 .
  • This engagement restricts movement of the first plate member 50 along the surface 61 of the second plate member 60 .
  • the first plate member 50 is positioned with respect to the second plate member 60 while its movement in the direction along the surface 61 of the second plate member 60 (horizontal direction and vertical direction in FIG. 8) is restricted.
  • the surface 51 of the first plate member 50 and the surface 61 of the second plate member 60 are in surface contact.
  • FIG. 12 to 14 are plan views explaining a method of forming the convex portion 53.
  • FIG. The mold 110 for molding the convex portion 53 shown in the first embodiment can also be applied to this embodiment.
  • the shape of the punch tip 119a of the punch 113 when viewed from the cutting edge side is rectangular, and the shape of the opening 111a opening in the upper surface 111c of the die 111 is rectangular. are different.
  • the first plate material 50 is cut out from a sheet metal base material 200 . First, a method of cutting out the first plate material 50 from the base material 200 by punching will be described.
  • a plurality of rectangular openings BH are formed in the base material 200 by punching using a required punching die.
  • a plurality of openings BH are formed along the outline of the first plate member 50 (outer peripheral edge 50a).
  • the four corners of the first plate member 50 are left to form micro joints Jm, which are minute connecting portions. Thereby, the first plate material 50 and the base material 200 are kept connected. In addition, the first plate member 50 and the base material 200 are connected by wire joints Jw wider than the micro joints Jm without forming the openings BH at the portions (three places) where the convex portions 53 are formed. leave it to
  • a die 110 including a die 111 and a punch 113 is used to punch out the wire joint Jw.
  • the shape punched by the punch tip 119a is indicated by "Pc".
  • the base material 200 to which the first plate material 50 is connected is positioned so that the punched end face punched by the punch tip 119 a corresponds to the outline of the first plate material 50 .
  • the first plate material 50 is separated from the base material 200 by cutting the micro joint Jm by a well-known method. As a result, the first plate member 50 having the protrusions 53 is produced.
  • FIG. 15 to 17 are plan views explaining a method of forming the recess 63.
  • FIG. 15 to 17 are plan views explaining a method of forming the recess 63.
  • the base material 210 is subjected to coining processing using a molding die to form recesses 63 corresponding to the positions and number of the protrusions 53 . Since the concave portion 63 is formed by coining by coining, a bulging portion S (one-dot chain line) bulging in the plate thickness direction is generated at a portion adjacent to the concave portion 63 .
  • the bulging portion S is generated by plastic flow of the material of the gouged portion when forming the concave portion 63 and bulging in the plate thickness direction.
  • the crushing process the material of the bulging portion S is uniformly plastically flowed to the peripheral member, and the degree of bulging is suppressed to a level that does not pose a practical problem.
  • the periphery of the recess 63 is substantially flattened.
  • a plurality of rectangular openings BH are formed in the base material 210 by punching using a required punching die.
  • a plurality of openings BH are formed along the contour of the second plate member 60 .
  • the four corners of the second plate member 60 are left to form micro joints Jm, which are minute connecting portions.
  • the second plate material 60 and the base material 210 are kept connected.
  • This micro joint Jm is cut at the final stage of processing to separate the second plate material 60 from the base material 210 . Thereby, the second plate material 60 having the concave portion 63 is created.
  • the first plate material 50 is not limited to the method of cutting out from the base material 200 by punching, but may be cut out from the base material 200 by cutting with a laser beam as described below.
  • 18 to 20 are plan views explaining a method of forming the convex portion 53. FIG.
  • the base material 200 is cut by the laser beam by irradiating the laser beam along the contour (outer peripheral edge portion 50a) of the first plate material 50. As shown in FIG. At this time, the base material 200 is cut so as to form a protruding portion Ea that extends outside the contour of the first plate member 50 instead of following the contour of the first plate member 50 at the portion where the convex portion 53 is to be formed. Further, by cutting the first plate material 50 so as to leave the four corners uncut, micro joints Jm, which are minute connecting portions, are formed.
  • a mold 110 including a die 111 and a punch 113 is used to punch out a predetermined range including the projecting portion Ea.
  • the shape punched by the punch tip 119a is indicated by "Pc".
  • the base material 200 to which the first plate material 50 is connected is positioned so that the punched end face punched by the punch tip 119 a corresponds to the outline of the first plate material 50 .
  • a plastic flow portion is formed in the punching direction where the material plastically flows.
  • the plastic flow portion of the first plate 50 formed by the action of the punch tip 119a is pressed by the chamfered surface 111b of the die 111 and the sidewall of the punch tip 119a.
  • a convex portion 53 is formed on a portion of the outer peripheral edge portion 50a forming the outline of the first plate member 50.
  • the micro joint Jm is cut by a known method to separate the first plate material 50 from the base material 200 .
  • the first plate member 50 having the protrusions 53 is produced.
  • the method of cutting out the second plate material 60 from the base material 210 is not limited to the method of punching out by punching, but may be a method of cutting with a laser beam.
  • the positioning method of this embodiment can be implemented by forming the convex portion 53 and the concave portion 63 as described above. That is, in the positioning method of the present embodiment, the first plate member 50 is punched to form the convex portion 53 made of the plastic flow portion of the material of the first plate member 50 and protruding in the punching direction from the edge of the first plate member 50. a step of forming recesses 63 capable of receiving the protrusions 53 in the surface 61 of the second plate member 60; and a step of engaging the convex portion 53 of the first plate member 50 with the concave portion 63 of the second plate member 60 to restrict the movement of the first plate member 50 along the surface 61 of the second plate member 60 .
  • the punching process for the first plate material 50 is a process for forming the outer peripheral edge portion 50a that forms the outline of the first plate material 50 .
  • a convex portion 53 is formed on the outer peripheral edge portion 50 a that is the edge portion of the first plate member 50 .
  • the convex portion 53 of the first plate member 50 protrudes in the plate thickness direction (punching direction).
  • the convex portion 53 can be formed by plastic flow of the material in the punching direction when forming the outer peripheral edge portion 50a of the first plate member 50 by punching. Therefore, even when positioning a material with low plastic fluidity, the convex portion 53 having a sufficient height can be easily formed by causing the material to plastically flow in the punching direction.
  • the first plate member 50 is moved along the surface 61 of the second plate member 60 .
  • movement relative movement
  • a part of the surface 51 of the first plate member 50 is gouged out, and the material is plastically flowed to cut and raise in the plate thickness direction.
  • the convex portion 53 of the present embodiment the convex portion 53 of the first plate member 50 protrudes in the punching direction due to the plastic flow of the material, so that the convex portion 53 having a sufficient height can be easily formed. be able to. This makes it possible to achieve more reliable positioning.
  • the convex portion 53 is a linear convex portion extending along the outer peripheral edge portion 50 a and is provided in a part of the outer peripheral edge portion, and the concave portion 63 is formed along the convex portion 53 . It is a linear groove that extends. According to this positioning structure, the two plate members 50 and 60 are positioned more accurately by engaging the concave portion 63 and the convex portion 53 .

Abstract

The present invention comprises: a projecting portion (13) which is formed by of a plastic flow part of a material for a first plate material (10) and which projects in the penetration direction of a punching hole (15) provided to the first plate material (10), from an inner circumferential edge (15a) of the punching hole (15) on one surface (11) side of the first plate material (10); and a recessed portion (23) that is formed in one surface (21) of a second plate material (20) and that is capable of receiving the projecting portion (13). Movement of the first plate material (10) along the one surface (21) of the second plate material (20) is restricted through engagement of the projecting portion (13) of the first plate material (10) with the recessed portion (23) of the second plate material (20).

Description

位置決め構造、及び位置決め方法Positioning structure and positioning method
　本開示は、位置決め構造、及び位置決め方法に関する。 The present disclosure relates to positioning structures and positioning methods.
　従来、２枚の板状のワーク（板材）における表面同士を重ね合わせて、例えばスポット溶接などを行う場合、一方の板材の表面に凸部を形成し、他方の板材の表面に凹部を形成し、前記凹部と前記凸部とを嵌合することで、２枚の板材の位置決めをする技術が知られている（特許文献１参照）。 Conventionally, when the surfaces of two plate-like workpieces (plate materials) are superimposed and, for example, spot welding is performed, a convex portion is formed on the surface of one plate material and a concave portion is formed on the surface of the other plate material. , a technique of positioning two plate members by fitting the concave portion and the convex portion (see Patent Document 1).
特開２０１９－１１５９２２号公報JP 2019-115922 A
　従来の技術では、一方の板材の表面に金型を食い込ませることで金属を塑性流動させて凸部を形成し、その凸部を他方の板材に設けた凹部に係合させることで位置決めしている。しかしながら、塑性流動性の低い金属では十分な高さまで凸部を突出させることが困難であり、より確実な位置決めを実現することが難しかった。 In the conventional technique, a metal mold is made to bite into the surface of one of the plate materials to cause plastic flow of the metal to form protrusions, and the protrusions are engaged with recesses provided in the other plate material for positioning. there is However, it has been difficult to project the protrusions to a sufficient height with metals having low plastic fluidity, and it has been difficult to achieve more reliable positioning.
　本開示の一態様に係る位置決め構造は、第１板材の縁部に設けられ、第１板材の一方の表面側から板厚方向に突出した、第１板材の素材の塑性流動部からなる凸部と、第２板材の一方の表面に形成された、凸部を受け入れ可能な凹部と、を備え、第１板材の一方の表面と第２板材の一方の表面とを向かい合うように重ね合わせて第１板材の凸部が第２板材の凹部に係合することにより、第２板材の一方の表面に沿う第１板材の移動を規制する。 A positioning structure according to an aspect of the present disclosure is provided at an edge of a first plate member, and protrudes in a plate thickness direction from one surface side of the first plate member. and a concave portion formed on one surface of the second plate member that can receive the convex portion, and the one surface of the first plate member and the one surface of the second plate member are overlapped so as to face each other to form the second plate member. The movement of the first plate member along one surface of the second plate member is restricted by engaging the convex portion of the first plate member with the concave portion of the second plate member.
　本開示の一態様に係る位置決め方法は、第１板材に打ち抜き加工を行い、第１板材の縁部から打ち抜き方向に突出した第１板材の素材の塑性流動部からなる凸部を形成する第１工程と、第２板材の一方の表面に、凸部を受け入れ可能な凹部を形成する第２工程と、第１板材の一方の表面と第２板材の一方の表面とを向かい合うように重ね合わせて第１板材の凸部を第２板材の凹部に係合させて、第２板材の表面に沿う第１板材の移動を規制する第３工程と、を含む。 A positioning method according to an aspect of the present disclosure performs a punching process on a first plate material, and forms a convex portion composed of a plastic flow part of a material of the first plate material that protrudes in a punching direction from an edge of the first plate material. a second step of forming a concave portion capable of receiving the convex portion on one surface of the second plate; and a third step of engaging the convex portion of the first plate member with the concave portion of the second plate member to restrict movement of the first plate member along the surface of the second plate member.
　本開示の一態様に係る位置決め構造、及び位置決め方法によれば、第１板材の凸部は、板厚方向に突出している。この凸部は、打ち抜き加工によって第１板材の縁部を形成する際に、打ち抜き方向への素材の塑性流動によって形成することができる。これにより、素材の塑性流動性が低くても、打ち抜き方向へと素材を塑性流動させることで、十分な高さの凸部を容易に形成することができる。そして、この位置決め構造、及び位置決め方法によれば、第１板材の凸部が第２板材の凹部に対して確実に係合し、これにより、第２板材の表面に沿った第１板材の移動を効果的に規制することができる。 According to the positioning structure and positioning method according to one aspect of the present disclosure, the convex portion of the first plate protrudes in the plate thickness direction. The convex portion can be formed by plastic flow of the material in the punching direction when forming the edge portion of the first plate by punching. As a result, even if the material has low plastic fluidity, it is possible to easily form convex portions with a sufficient height by plastically flowing the material in the punching direction. According to this positioning structure and positioning method, the convex portion of the first plate member is reliably engaged with the concave portion of the second plate member, thereby moving the first plate member along the surface of the second plate member. can be effectively regulated.
　本開示の一態様によれば、塑性流動性の低い金属からなる場合でも、板材同士を確実に位置決めすることができる。 According to one aspect of the present disclosure, plate materials can be reliably positioned with respect to each other even when they are made of metal with low plastic fluidity.
図１は、第１板材の凸部と第２板材の凹部とを係合させて位置決めする前の状態を説明する図である。FIG. 1 is a diagram illustrating a state before positioning by engaging the convex portion of the first plate member and the concave portion of the second plate member. 図２は、第１板材の凸部と第２板材の凹部とを係合させて位置決めした状態を説明する図である。FIG. 2 is a diagram for explaining a state in which the convex portion of the first plate member and the concave portion of the second plate member are engaged and positioned. 図３は、第１板材の加工に用いるパンチプレス、金型の構成を説明する断面説明図である。FIG. 3 is a cross-sectional explanatory view for explaining the configuration of a punch press and a die used for processing the first plate material. 図４は、第１板材に凸部を形成した状態を説明する断面説明図である。FIG. 4 is a cross-sectional explanatory view for explaining a state in which convex portions are formed on the first plate member. 図５は、第１板材に凸部を形成する際に用いるダイ金型の断面説明図である。FIG. 5 is a cross-sectional explanatory view of a die used when forming a convex portion on the first plate material. 図６は、変更例において、第１板材の凸部と第２板材の凹部とを係合させて位置決めする前の状態を説明する図である。FIG. 6 is a diagram illustrating a state before positioning by engaging the convex portion of the first plate member and the concave portion of the second plate member in the modified example. 図７は、変更例において、第１板材の凸部と第２板材の凹部とを係合させて位置決めした状態を説明する図である。FIG. 7 is a diagram for explaining a state in which the convex portion of the first plate member and the concave portion of the second plate member are engaged and positioned in the modified example. 図８は、第１板材の凸部と第２板材の凹部とを係合させて位置決めした状態を説明する図である。FIG. 8 is a diagram for explaining a state in which the convex portion of the first plate member and the concave portion of the second plate member are engaged and positioned. 図９は、図８のＡＡ断面を示す図である。FIG. 9 is a diagram showing the AA cross section of FIG. 図１０は、図９において破線で囲まれた領域を拡大して示す図である。FIG. 10 is an enlarged view of a region surrounded by broken lines in FIG. 図１１は、第１板材の凸部と第２板材の凹部とを係合させて位置決めする前の状態を説明する図である。FIG. 11 is a diagram illustrating a state before positioning by engaging the convex portion of the first plate member and the concave portion of the second plate member. 図１２は、凸部を形成する方法を説明する平面図である。12A and 12B are plan views for explaining a method of forming a convex portion. FIG. 図１３は、凸部を形成する方法を説明する平面図である。13A and 13B are plan views for explaining a method of forming a convex portion. FIG. 図１４は、凸部を形成する方法を説明する平面図である。14A and 14B are plan views for explaining a method of forming a convex portion. FIG. 図１５は、凹部を形成する方法を説明する平面図である。FIG. 15 is a plan view illustrating a method of forming recesses. 図１６は、凹部を形成する方法を説明する平面図である。FIG. 16 is a plan view illustrating a method of forming recesses. 図１７は、凹部を形成する方法を説明する平面図である。FIG. 17 is a plan view illustrating a method of forming recesses. 図１８は、凸部を形成する方法を説明する平面図である。18A and 18B are plan views for explaining a method of forming a convex portion. FIG. 図１９は、凸部を形成する方法を説明する平面図である。19A and 19B are plan views for explaining a method of forming convex portions. 図２０は、凸部を形成する方法を説明する平面図である。FIG. 20 is a plan view for explaining a method of forming convex portions.
　以下、本開示の実施形態に係る位置決め構造、及び位置決め方法を、図面に基づいて説明する。なお、同一の機能、及び構成には、同一又は類似の符号を付して、その説明を適宜省略する。 A positioning structure and a positioning method according to embodiments of the present disclosure will be described below based on the drawings. Identical functions and configurations are denoted by identical or similar reference numerals, and descriptions thereof are omitted as appropriate.
（第１の実施形態）
　図１は、第１板材１０の凸部１３と第２板材２０の凹部２３とを係合させて位置決めする前の状態を説明する図である。図２は、第１板材１０の凸部１３と第２板材２０の凹部２３とを係合させて位置決めした状態を説明する図である。 (First embodiment)
FIG. 1 is a diagram illustrating a state before positioning by engaging the convex portion 13 of the first plate member 10 and the concave portion 23 of the second plate member 20 . FIG. 2 is a diagram illustrating a state in which the protrusion 13 of the first plate member 10 and the recess portion 23 of the second plate member 20 are engaged and positioned.
　本実施形態に係る位置決め構造は、第１板材１０の縁部に設けられ、第１板材１０の一方の表面１１側から板厚方向に突出した、第１板材１０の素材の塑性流動部からなる凸部１３と、第２板材２０の一方の表面２１に形成された、凸部１３を受け入れ可能な凹部２３と、を備え、第１板材１０の一方の表面１１と第２板材２０の一方の表面２１とを向かい合うように重ね合わせて第１板材１０の凸部１３が第２板材２０の凹部２３に係合することにより、第２板材２０の一方の表面２１に沿う第１板材１０の移動を規制する。 The positioning structure according to the present embodiment is provided at the edge of the first plate member 10, and consists of a plastic flow portion of the material of the first plate member 10 that protrudes in the plate thickness direction from one surface 11 side of the first plate member 10. A convex portion 13 and a concave portion 23 formed on one surface 21 of the second plate member 20 and capable of receiving the convex portion 13 are provided. The first plate member 10 moves along one surface 21 of the second plate member 20 by overlapping the first plate member 10 so as to face the surface 21 and engaging the convex portion 13 of the first plate member 10 with the concave portion 23 of the second plate member 20 . to regulate.
　本実施形態において、第１板材１０は、第１板材１０の輪郭をなす外周縁部よりも内側の平面領域に、板厚方向に貫通する打ち抜き孔１５を備えており、凸部１３は、第１板材１０の縁部である、打ち抜き孔１５の内周縁部１５ａに設けられている。 In the present embodiment, the first plate member 10 is provided with a punched hole 15 penetrating in the plate thickness direction in a planar region inside the outer peripheral edge forming the outline of the first plate member 10, and the convex portion 13 is a It is provided at the inner peripheral edge portion 15 a of the punched hole 15 , which is the edge portion of the plate member 10 .
　本実施形態において、第１板材１０の輪郭をなす外周縁部（図示せず）よりも内側の平面領域に、板厚方向（図１における下方向）に貫通する開口である打ち抜き孔１５が設けられている。打ち抜き孔１５の内周縁部１５ａには、板厚方向に沿って突出する凸部１３が形成されている。凸部１３は、第１板材１０の一方の表面１１（以下単に「表面１１」という）側に起立するように突出している。凸部１３は、打ち抜き加工より打ち抜き孔１５を形成する際に塑性流動した第１板材１０の素材である塑性流動部から形成されている。 In this embodiment, a punched hole 15, which is an opening penetrating in the plate thickness direction (downward in FIG. 1), is provided in a planar region inside the outer peripheral edge (not shown) forming the outline of the first plate 10. It is An inner peripheral edge portion 15a of the punched hole 15 is formed with a convex portion 13 projecting along the plate thickness direction. The convex portion 13 protrudes so as to stand on one surface 11 (hereinafter simply referred to as “surface 11”) of the first plate member 10 . The convex portion 13 is formed from a plastic flow portion which is the material of the first plate member 10 that plastically flows when the punched hole 15 is formed by punching.
　なお、第１板材１０の他方の表面のうち、凸部１３と対応する部位は、打ち抜き孔１５を加工する際のパンチの作用により、表面１１側に向けて僅かに引き込まれるように変形していてもよい。つまり、打ち抜き孔１５の表面１１の反対側における周縁部は、所謂「だれ」変形と呼ばれる、変形をした部分を含んでもよい。 In addition, of the other surface of the first plate member 10, the portion corresponding to the convex portion 13 is deformed so as to be slightly pulled toward the surface 11 side by the action of the punch when processing the punched hole 15. may That is, the perimeter of the perforation 15 opposite the surface 11 may include a deformed portion, the so-called "slip" deformation.
　図１、図２に示すように、打ち抜き孔１５の軸線１５ｂを含む断面において凸部１３の先端１３ａの形状は鋭角（θ１＜９０°）に形成されている。また、凸部１３は、打ち抜き孔１５の周方向に沿って連続的に延びる環状凸部である。言い換えると、第１板材１０の表面１１を第２板材２０側から（図１における下方から）見ると、凸部１３が環状になっている。なお、本実施形態では、凸部１３は円環状になっている。 As shown in FIGS. 1 and 2, in a cross section including the axis 15b of the punched hole 15, the shape of the tip 13a of the projection 13 is formed at an acute angle (θ1<90°). Further, the convex portion 13 is an annular convex portion continuously extending along the circumferential direction of the punched hole 15 . In other words, when the surface 11 of the first plate member 10 is viewed from the second plate member 20 side (from below in FIG. 1), the convex portion 13 is annular. In addition, in the present embodiment, the convex portion 13 has an annular shape.
　本実施形態において、第１板材１０には、板厚が１ｍｍ～３ｍｍの範囲内の所定の厚さのステンレス鋼の板材が用いられており、第１板材１０の表面１１に対する凸部１３の高さＨは、０．１ｍｍ以上０．６ｍｍ以下にされている。ただし、板材の材質、厚さはこれに制限されるものでない。例えば、板材としてアルミニウムや鉄の板材を用いてもよい。また、その板厚を０．５ｍｍ～５ｍｍの範囲としてもよい。この場合でも、板材の表面に対する凸部の突出量は、本実施形態と同様に０．１ｍｍ以上０．６ｍｍ以下に設定されてよい。 In the present embodiment, the first plate member 10 is a stainless steel plate member having a predetermined thickness within the range of 1 mm to 3 mm. The height H is set to 0.1 mm or more and 0.6 mm or less. However, the material and thickness of the plate material are not limited to these. For example, a plate made of aluminum or iron may be used as the plate. Also, the plate thickness may be in the range of 0.5 mm to 5 mm. Even in this case, the amount of projection of the convex portion with respect to the surface of the plate may be set to 0.1 mm or more and 0.6 mm or less as in the present embodiment.
　第２板材２０の一方の表面２１（以下単に「表面２１」という）には、第１板材１０の凸部１３を受け入れ可能な凹部２３が形成されている。凹部２３は、凸部１３を受け入れ可能であるように、凸部１３に沿って連続的に延びる環状溝である。第２板材２０の表面２１を第１板材１０側から（図１における上方から）見ると、凹部２３が環状になっている。本実施形態では、第２板材２０の表面２１に対する凹部２３の最大深さＤ０の寸法が、凸部１３を受け入れ可能であるように、少なくとも凸部１３の高さＨ以上の寸法に設定されている（Ｈ≦Ｄ０）。 A concave portion 23 capable of receiving the convex portion 13 of the first plate member 10 is formed on one surface 21 of the second plate member 20 (hereinafter simply referred to as "surface 21"). The recess 23 is an annular groove extending continuously along the protrusion 13 so as to be able to receive the protrusion 13 . When the surface 21 of the second plate member 20 is viewed from the first plate member 10 side (from above in FIG. 1), the concave portion 23 is annular. In the present embodiment, the dimension of the maximum depth D0 of the concave portion 23 with respect to the surface 21 of the second plate member 20 is set to at least the height H of the convex portion 13 or more so that the convex portion 13 can be received. (H≦D0).
　表面２１のうち凹部２３に囲まれた中央部２７は、表面２１よりも突出した高さになるように、円錐台形状に盛り上がるように形成してある。中央部２７は、図示したように、表面２１を基準に表面２１よりも突出した高さに形成してもよいし、表面２１と同一高さ、又は表面２１より低く形成してもよい。底面２５は、底面２５全領域において最大深さＤ０が凸部１３の高さＨ以上である条件（Ｈ≦Ｄ０）を満たしている限り、表面２１と平行でなくてもよく、曲面であってもよい。 A center portion 27 of the surface 21 surrounded by the concave portions 23 is formed to protrude in a truncated cone shape so as to protrude above the surface 21 . The center portion 27 may be formed to have a height that protrudes from the surface 21 with respect to the surface 21 as illustrated, or may be formed to have the same height as the surface 21 or be lower than the surface 21 . The bottom surface 25 does not have to be parallel to the surface 21 as long as the condition (H≤D0) is satisfied that the maximum depth D0 is equal to or greater than the height H of the protrusion 13 in the entire area of the bottom surface 25, and the bottom surface 25 may be curved. good too.
　凹部２３の内面は、底面２５と、底面２５よりも中央部２７側に形成された第１側壁面２９と、底面２５よりも外側に形成された第２側壁面３１とを備えている。凹部２３の底面２５は、表面２１と平行に形成されている。凹部２３の第１側壁面２９は、図１に示すように、表面２１の法線方向に対して角度θ２を成している。角度θ２の大きさは、０°以上４０°以下である。一方、凹部２３の第２側壁面３１は、表面２１の法線方向に対して角度θ３を成している。角度θ３の大きさは、０°以上５５°以下である。なお、角度θ２及びθ３は、第２板材２０の材質等を考慮して適宜選択されてよい。例えば、第２板材２０として、ステンレス鋼等の板材を用いる場合、角度θ２を２０°以上３５°以下としてもよく、角度θ３を３５°以上５０°以下としてもよい。 The inner surface of the recess 23 includes a bottom surface 25 , a first side wall surface 29 formed closer to the central portion 27 than the bottom surface 25 , and a second side wall surface 31 formed outside the bottom surface 25 . A bottom surface 25 of the recess 23 is formed parallel to the surface 21 . The first side wall surface 29 of the recess 23 forms an angle θ2 with respect to the normal direction of the surface 21, as shown in FIG. The magnitude of the angle θ2 is 0° or more and 40° or less. On the other hand, the second side wall surface 31 of the recess 23 forms an angle θ3 with respect to the normal direction of the surface 21 . The magnitude of the angle θ3 is 0° or more and 55° or less. Note that the angles θ2 and θ3 may be appropriately selected in consideration of the material of the second plate member 20 and the like. For example, when a plate such as stainless steel is used as the second plate 20, the angle θ2 may be 20° or more and 35° or less, and the angle θ3 may be 35° or more and 50° or less.
　図２に示すように、本実施形態の位置決め構造では、第１板材１０の表面１１と第２板材２０の表面２１とを向かい合うように重ね合わせることで、第１板材１０の表面１１に形成された凸部１３と、第２板材２０の表面２１に形成された凹部２３とが係合する。この係合により、第２板材２０の表面２１に沿う第１板材１０の移動が規制される。言い換えると、第１板材１０は、第２板材２０の表面２１に沿う方向（図２における左右方向であるＸ方向、あるいは紙面に垂直な方向）の移動が規制されて、第２板材２０に対して位置決めされる。凸部１３と凹部２３とが係合した状態では、第１板材１０の表面１１と第２板材２０の表面２１とが溶接可能に面接触している。 As shown in FIG. 2, in the positioning structure of the present embodiment, the surface 11 of the first plate member 10 and the surface 21 of the second plate member 20 are overlapped so as to face each other, so that the surface 11 of the first plate member 10 is formed with The convex portion 13 and the concave portion 23 formed on the surface 21 of the second plate member 20 are engaged with each other. This engagement restricts movement of the first plate member 10 along the surface 21 of the second plate member 20 . In other words, the movement of the first plate member 10 in the direction along the surface 21 of the second plate member 20 (X direction, which is the horizontal direction in FIG. 2, or the direction perpendicular to the paper surface) is restricted, position. In the state where the convex portion 13 and the concave portion 23 are engaged, the surface 11 of the first plate member 10 and the surface 21 of the second plate member 20 are in surface contact so as to be weldable.
　本実施形態において、第１板材１０の打ち抜き孔１５は軸線１５ｂ方向（図２におけるＺ方向）から見ると円形状になっており、打ち抜き孔１５の内周縁部１５ａに形成された凸部１３は、軸線１５ｂを中心軸とする円環状になっている。このとき、凸部１３の先端１３ａは、打ち抜き孔１５の直径とほぼ同じ所定の直径φａの円形状に形成される。なお、所定の直径は２ｍｍ～５ｍｍに設定されている。 In this embodiment, the punched hole 15 of the first plate member 10 has a circular shape when viewed from the direction of the axis 15b (the Z direction in FIG. 2), and the convex portion 13 formed on the inner peripheral edge portion 15a of the punched hole 15 is , the axis 15b as a center axis. At this time, the tip 13a of the projection 13 is formed in a circular shape having a predetermined diameter φa which is substantially the same as the diameter of the punched hole 15. As shown in FIG. Note that the predetermined diameter is set to 2 mm to 5 mm.
　図１、２に示すように、本実施形態において、第２板材２０の凹部２３は、凸部１３を受け入れ可能な円環状の溝になっており、凸部１３と凹部２３とが係合した状態で、凹部２３の円環状の中心軸が凸部１３の軸線１５ｂと一致するように構成されている。また、凸部１３と凹部２３とが係合した状態で、凸部１３の先端１３ａに対向する位置における第２板材２０の（表面２１を基準にした）凹部２３の深さＤは、第１板材１０の表面１１を基準にした凸部１３の高さＨ以上の寸法にされている（Ｈ≦Ｄ）。さらに、凹部２３の第２側壁面３１が第２板材２０の表面２１に開口する位置における直径φｃは、図１に示すように、凸部１３の最外径（凸部１３が第１板材１０の表面から突出する範囲で軸線１５ｂを中心とした最も径方向外側位置における直径）φｂよりも大きい（φｃ＞φｂ）。この構成により、凹部２３が凸部１３を受け入れ可能になっている。 As shown in FIGS. 1 and 2, in this embodiment, the recess 23 of the second plate member 20 is an annular groove capable of receiving the protrusion 13, and the protrusion 13 and the recess 23 are engaged. In this state, the central axis of the annular shape of the concave portion 23 coincides with the axis 15b of the convex portion 13. As shown in FIG. Further, the depth D of the recessed portion 23 (based on the surface 21) of the second plate member 20 at the position facing the tip 13a of the projected portion 13 in the state where the projected portion 13 and the recessed portion 23 are engaged is the first The dimension is equal to or greater than the height H of the projection 13 with respect to the surface 11 of the plate member 10 (H≦D). Furthermore, the diameter φc at the position where the second side wall surface 31 of the concave portion 23 opens to the surface 21 of the second plate member 20 is, as shown in FIG. φb (φc>φb) at the radially outermost position centered on the axis 15b in the range protruding from the surface of the . This configuration allows the concave portion 23 to receive the convex portion 13 .
　なお、凸部１３と凹部２３とが係合した状態では、図２に示すように、凸部１３の先端１３ａが凹部２３の内面に当接してもよい。具体的に、凹部２３の最大深さＤ０と凸部１３の高さＨの関係をＨ＝Ｄ０として、凸部１３の先端１３ａが凹部２３の底面２５に当接するように凹部２３を形成してもよい。また、凸部１３の先端１３ａが凹部２３の第１側壁面２９に当接するよう凹部２３を形成してもよい。ただし、凸部１３と凹部２３とが係合した状態では、図２に示すように、凸部１３の先端１３ａが凹部２３の内面に当接した場合でも第１板材１０の表面１１と第２板材２０の表面２１とが溶接可能に面接触するように凹部２３は形成される。 In addition, in the state where the convex portion 13 and the concave portion 23 are engaged, the tip 13a of the convex portion 13 may contact the inner surface of the concave portion 23 as shown in FIG. Specifically, the relationship between the maximum depth D0 of the concave portion 23 and the height H of the convex portion 13 is set to H=D0, and the concave portion 23 is formed so that the tip 13a of the convex portion 13 contacts the bottom surface 25 of the concave portion 23. good too. Alternatively, the recess 23 may be formed so that the tip 13 a of the projection 13 contacts the first side wall surface 29 of the recess 23 . However, when the projection 13 and the recess 23 are engaged with each other, as shown in FIG. The concave portion 23 is formed so as to be in surface contact with the surface 21 of the plate material 20 so as to be weldable.
　本実施形態では、凹部２３の第１側壁面２９の角度θ２が第２側壁面３１の角度θ３よりも小さくなっており（θ２＜θ３）、第１側壁面２９と底面２５との交差部近傍の位置に凸部１３の先端１３ａが位置している。なお、凸部１３の先端１３ａの角度θ１は、凸部１３の先端１３ａがより確実に凹部２３の溝内に位置するように凹部２３の第２側壁面３１の角度θ３以下の角度（θ１≦θ３）に設定されてよい。 In this embodiment, the angle .theta.2 of the first side wall surface 29 of the recess 23 is smaller than the angle .theta.3 of the second side wall surface 31 (.theta.2<.theta.3). The tip 13a of the projection 13 is located at the position of . The angle θ1 of the tip 13a of the projection 13 is set to an angle equal to or less than the angle θ3 of the second side wall surface 31 of the recess 23 (θ1≦ θ3) may be set.
　図３は、第１板材１０の加工に用いるパンチプレス、金型１１０の構成を説明する断面説明図である。図４は、金型１１０を用いて第１板材１０に凸部１３を形成した状態を説明する断面説明図である。図５は、第１板材１０に凸部１３を形成する際に用いるダイ金型１１１の断面説明図である。 FIG. 3 is a cross-sectional explanatory view for explaining the configuration of the punch press and the mold 110 used for processing the first plate material 10. FIG. FIG. 4 is a cross-sectional explanatory view illustrating a state in which the convex portion 13 is formed on the first plate member 10 using the mold 110. As shown in FIG. FIG. 5 is a cross-sectional explanatory view of the die mold 111 used when forming the convex portion 13 on the first plate member 10. As shown in FIG.
　第１板材１０の凸部１３は、図３に示されるように、不図示のパンチプレスに装着して使用される金型１１０を用いて形成される。打ち抜き孔１５の穿設に使用される金型１１０は、開口部１１１ａに面取り面１１１ｂが形成されたダイ１１１と、ダイ１１１と協働して第１板材１０に打ち抜き加工するパンチ１１３を備える。 As shown in FIG. 3, the convex portion 13 of the first plate member 10 is formed using a mold 110 that is used by being attached to a punch press (not shown). A die 110 used for punching the punched hole 15 includes a die 111 having a chamfered surface 111b formed in an opening 111a and a punch 113 for punching the first plate material 10 in cooperation with the die 111 .
　ダイ１１１は、パンチプレスの不図示の下部タレットに固定されるように構成される。図３、５に示すように、ダイ１１１の上面１１１ｃは平坦面になっており、パンチプレスに固定された状態で、ワーク（凸部１３形成前の第１板材１０）の表面１１を上面１１１ｃ上に水平に載置可能に構成されている。 The die 111 is configured to be fixed to the lower turret (not shown) of the punch press. As shown in FIGS. 3 and 5, the upper surface 111c of the die 111 is a flat surface, and the surface 111 of the workpiece (the first plate member 10 before forming the convex portion 13) is placed on the upper surface 111c while being fixed to the punch press. It is configured so that it can be placed horizontally on the top.
　図３、５に示すように、ダイ１１１は、上面１１１ｃに開口し、上面１１１ｃの法線方向に貫通する開口部１１１ａを有する。ダイ１１１の上面１１１ｃにおいて、開口部１１１ａの周縁部には面取り面１１１ｂが形成されている。ダイ１１１の上面１１１ｃから、面取り面１１１ｂが開口部１１１ａの内周面と交差する位置までの深さ（上面１１１ｃの法線方向における深さ）を面取り面１１１ｂの深さＤ１とする。第１板材１０の板厚が、例えば、１ｍｍ～３ｍｍである場合、深さＤ１は、０．１ｍｍ以上０．６ｍｍ以下に設定される。また、面取り面１１１ｂの、上面１１１ｃの法線方向に対する傾斜角度θ４は、凸部１３の先端１３ａの形状を鋭角（θ１＜９０°）に形成可能な角度に設定されている。傾斜角度θ４は鋭角である。例えば、凸部１３の先端１３ａの角度θ１が凹部２３の第２側壁面３１の角度θ３以下の角度（θ１≦θ３）となるように、面取り面１１１ｂの傾斜角度θ４も凹部２３の第２側壁面３１の角度θ３以下の角度（θ４≦θ３）に設定してもよい。 As shown in FIGS. 3 and 5, the die 111 has an opening 111a that opens in the upper surface 111c and penetrates in the normal direction of the upper surface 111c. On the upper surface 111c of the die 111, a chamfered surface 111b is formed along the periphery of the opening 111a. The depth from the upper surface 111c of the die 111 to the position where the chamfered surface 111b intersects the inner peripheral surface of the opening 111a (the depth in the normal direction of the upper surface 111c) is defined as the depth D1 of the chamfered surface 111b. When the plate thickness of the first plate member 10 is, for example, 1 mm to 3 mm, the depth D1 is set to 0.1 mm or more and 0.6 mm or less. In addition, the inclination angle θ4 of the chamfered surface 111b with respect to the normal direction of the upper surface 111c is set to an angle that allows the shape of the tip 13a of the projection 13 to be formed at an acute angle (θ1<90°). The tilt angle θ4 is an acute angle. For example, the inclination angle θ4 of the chamfered surface 111b is also the second side of the recess 23 so that the angle θ1 of the tip 13a of the projection 13 is equal to or less than the angle θ3 of the second side wall surface 31 of the recess 23 (θ1≦θ3). The angle may be set to be less than the angle θ3 of the wall surface 31 (θ4≦θ3).
　図３に示すように、パンチ１１３は、パンチプレスの上部タレットに上下動可能に支持される筒状のパンチガイド１１５を備える。パンチガイド１１５の先端部（図３における下端部）には、中心部に貫通孔１１７ａを有するストリッパプレート１１７が取付けられている。パンチガイド１１５の後端面（図３における上端面）には、パンチボディ１１９を挿通可能な貫通孔を有するリテーナカラー１２１が設けられている。リテーナカラー１２１は、Ｏ－リング１２１ａを挟んでパンチガイド１１５に取り付けられる。 As shown in FIG. 3, the punch 113 has a cylindrical punch guide 115 that is vertically movably supported by the upper turret of the punch press. A stripper plate 117 having a through hole 117a in the center is attached to the tip of the punch guide 115 (lower end in FIG. 3). A retainer collar 121 having a through hole through which the punch body 119 can be inserted is provided on the rear end surface (upper end surface in FIG. 3) of the punch guide 115 . The retainer collar 121 is attached to the punch guide 115 with an O-ring 121a interposed therebetween.
　図３に示すように、パンチ１１３は、さらに、パンチガイド１１５内に配置されてパンチガイド１１５に対して上下動可能に設けられたパンチボディ１１９を備える。パンチボディ１１９の先端部（図３における下端部）は、小径のパンチチップ１１９ａとされている。パンチボディ１１９は、リテーナカラー１２１を上下動自在に貫通して延びており、後端部（図３における上端部）にパンチヘッド１２３が螺着されている。 As shown in FIG. 3, the punch 113 further includes a punch body 119 arranged inside the punch guide 115 and vertically movable with respect to the punch guide 115 . The tip of the punch body 119 (lower end in FIG. 3) is a small-diameter punch tip 119a. The punch body 119 extends vertically movably through the retainer collar 121, and a punch head 123 is screwed to the rear end (upper end in FIG. 3).
　パンチボディ１１９は、パンチチップ１１９ａがパンチガイド１１５の下端部のストリッパプレート１１７の貫通孔１１７ａに挿通した状態で上下動可能なようにパンチガイド１１５内に配置されている。 The punch body 119 is arranged in the punch guide 115 so that it can move up and down while the punch tip 119a is inserted through the through hole 117a of the stripper plate 117 at the lower end of the punch guide 115.
　パンチヘッド１２３とパンチガイド１１５の上面に設けられたリテーナカラー１２１との間にはストリッパスプリング１２５が圧縮状態で収められている。パンチボディ１１９は、ストリッパスプリング１２５の圧縮の反発力によって上方へ付勢されている。 A stripper spring 125 is accommodated in a compressed state between the punch head 123 and the retainer collar 121 provided on the upper surface of the punch guide 115 . The punch body 119 is urged upward by the compression repulsive force of the stripper spring 125 .
　リテーナカラー１２１の上面には、ストリッパスプリング１２５を内部に収める円筒形状のスプリングカバー１２７が一体的に固定されている。 A cylindrical spring cover 127 that accommodates the stripper spring 125 is integrally fixed to the upper surface of the retainer collar 121 .
　スプリングカバー１２７の上端部内周面には径方向内方へ突出する段差部１２７ｂが形成されている。段差部１２７ｂの下面は、パンチヘッド１２３に形成された径方向外方へ突出するフランジ部１２３ａの上面が当接するようになっている。 A stepped portion 127b that protrudes radially inward is formed on the inner peripheral surface of the upper end portion of the spring cover 127 . The lower surface of the stepped portion 127b is in contact with the upper surface of a flange portion 123a formed on the punch head 123 and protruding radially outward.
　これにより、ストリッパスプリング１２５の付勢力によるパンチヘッド１２３の上方向への過度な移動を規制される。 As a result, excessive upward movement of the punch head 123 due to the biasing force of the stripper spring 125 is restricted.
　上記構成において、ダイ１１１上に第１板材１０を載置した後、パンチプレスによってパンチヘッド１２３が打圧され、それによりパンチ１１３が下降すると、ストリッパスプリング１２５の反発力によってパンチガイド１１５の下端部のストリッパプレート１１７が第１板材１０の上面に当接し、第１板材１０を押えた状態になる。さらにストリッパスプリング１２５の付勢力に抗してパンチボディ１１９をパンチガイド１１５に対して下降させると、パンチチップ１１９ａは、第１板材１０を打ち抜くと、同芯で配置されたダイ１１１の開口部１１１ａ内に進入する。パンチチップ１１９ａの外周面とダイ１１１の開口部１１１ａ内周面との間には、所定の径方向のクリアランスが設定されている。このクリアランスに応じて、第１板材１０の打ち抜き孔１５の打ち抜き方向（図４中の下面側）に、素材が塑性流動する塑性流動部が形成されることになる。 In the above configuration, after the first plate 10 is placed on the die 111, the punch head 123 is pressed by the punch press. The stripper plate 117 comes into contact with the upper surface of the first plate member 10 and presses the first plate member 10 . Further, when the punch body 119 is lowered with respect to the punch guide 115 against the biasing force of the stripper spring 125, the punch tip 119a punches out the first plate material 10, and the opening 111a of the die 111 arranged concentrically. enter inside. A predetermined radial clearance is set between the outer peripheral surface of the punch tip 119 a and the inner peripheral surface of the opening 111 a of the die 111 . According to this clearance, a plastic flow portion where the material plastically flows is formed in the punching direction (lower surface side in FIG. 4) of the punched hole 15 of the first plate member 10 .
　前述のごとく、パンチチップ１１９ａの作用によって形成された第１板材１０の塑性流動部は、図４に示すように、ダイ１１１の面取り面１１１ｂと第１板材１０に打ち抜き孔１５を形成した状態のパンチチップ１１９ａの側壁とによって押圧されることで、第１板材１０における打ち抜き孔１５の内周縁部１５ａに凸部１３が形成される。凸部１３は、第１板材１０の表面１１、面取り面１１１ｂ、及びパンチチップ１１９ａの側壁の間に形成される先端角度θ４の環状の凹部に倣う形状に形成される。 As described above, the plastic flow portion of the first plate member 10 formed by the action of the punch tip 119a is formed in the state where the punched holes 15 are formed in the chamfered surface 111b of the die 111 and the first plate member 10, as shown in FIG. The convex portion 13 is formed on the inner peripheral edge portion 15a of the punched hole 15 in the first plate member 10 by being pressed by the side wall of the punch tip 119a. The convex portion 13 is formed in a shape following an annular concave portion having a tip angle θ4 formed between the surface 11 of the first plate 10, the chamfered surface 111b, and the side wall of the punch tip 119a.
　なお、本実施形態では、第１板材１０の凸部１３が形成される表面１１の反対側の表面がストリッパプレート１１７と当接した状態で、塑性流動部が面取り面１１１ｂとパンチチップ１１９ａとで押圧される。このため、塑性流動部が面取り面１１１ｂとパンチチップ１１９ａとで押圧される際に、裏面がストリッパプレート１１７によって押えられた状態で凸部１３が形成される。この構成により、凸部１３はより確実に、前記凹部に倣う形状に成形される。 In this embodiment, the surface of the first plate 10 opposite to the surface 11 on which the projections 13 are formed is in contact with the stripper plate 117, and the plastic flow portion is formed by the chamfered surface 111b and the punch tip 119a. pressed. Therefore, when the plastic flow portion is pressed by the chamfered surface 111b and the punch tip 119a, the convex portion 13 is formed with the back surface pressed by the stripper plate 117. FIG. With this configuration, the convex portion 13 is more reliably formed into a shape that follows the concave portion.
　以上のように、本実施形態の位置決め構造、及び位置決め方法では、図４に示すように、打ち抜き加工により第１板材１０に打ち抜き孔１５が形成される。打ち抜き孔１５が加工される際、第１板材１０では、打ち抜き孔１５に沿って素材の塑性流動が生じる。第１板材１０の内周縁部１５ａには、この素材の塑性流動によって生じた塑性流動部からなる凸部１３が形成される。このように、凸部１３は、打ち抜き孔１５の内周縁部１５ａに形成され、打ち抜き孔１５の打ち抜き方向、すなわち板厚方向に突出している。 As described above, in the positioning structure and positioning method of this embodiment, as shown in FIG. 4, the punched holes 15 are formed in the first plate material 10 by punching. When the punched hole 15 is processed, plastic flow of the material occurs along the punched hole 15 in the first plate member 10 . An inner peripheral edge portion 15a of the first plate member 10 is formed with a convex portion 13 which is a plastic flow portion generated by the plastic flow of the material. Thus, the convex portion 13 is formed on the inner peripheral edge portion 15a of the punched hole 15 and protrudes in the punching direction of the punched hole 15, that is, in the plate thickness direction.
　第２板材２０の表面２１には、凸部１３を受け入れ可能な凹部２３が形成される。凹部２３の形成に用いる金型（図示省略）は、パンチプレスに装着して使用される成形金型である。 A concave portion 23 capable of receiving the convex portion 13 is formed on the surface 21 of the second plate member 20 . A mold (not shown) used for forming the concave portion 23 is a molding mold used by being attached to a punch press.
　凹部２３は、第２板材２０の表面２１に形成されるものである。凹部２３は、例えばコイニング加工によって形成してよい。成形金型は、パンチボディの先端面に、凹部２３を第２板材２０の表面へ転写するための転写部（突出部）を備える。転写部の形状は、凹部２３が凸部１３を受け入れ可能な凸部１３（環状凸部）に沿って延びる環状溝となるように、突出部が環状であってよい。成形金型の全体的構成は、転写部の構成が異なるのみであって、その他の構成は、一般的な成形金型（刻印金型）と同様の構成である。したがって、凹部２３に用いる金型の全体的構成についての詳細な説明は省略する。 The recess 23 is formed on the surface 21 of the second plate member 20 . The recess 23 may be formed by coining, for example. The molding die has a transfer portion (protrusion) for transferring the concave portion 23 to the surface of the second plate member 20 on the tip surface of the punch body. As for the shape of the transfer portion, the projecting portion may be annular such that the recessed portion 23 forms an annular groove extending along the projecting portion 13 (annular projecting portion) capable of receiving the projecting portion 13 . The overall configuration of the molding die differs only in the configuration of the transfer portion, and the rest of the configuration is the same as that of a general molding die (stamping die). Therefore, detailed description of the overall configuration of the mold used for the recess 23 is omitted.
　そして、本実施形態の位置決め方法は、上記のように凸部１３及び凹部２３を形成することにより実施することが可能である。すなわち、本実施形態の位置決め方法は、第１板材１０に打ち抜き加工を行い、第１板材１０の縁部から打ち抜き方向に突出した第１板材１０の素材の塑性流動部からなる凸部１３を形成する工程と、第２板材２０の表面２１に、凸部１３を受け入れ可能な凹部２３を形成する工程と、第１板材１０の表面１１と第２板材２０の表面２１とを向かい合うように重ね合わせて第１板材１０の凸部１３を第２板材２０の凹部２３に係合させて、第２板材２０の表面２１に沿う第１板材１０の移動を規制する工程と、を備える。 Then, the positioning method of this embodiment can be implemented by forming the convex portion 13 and the concave portion 23 as described above. That is, in the positioning method of the present embodiment, the first plate member 10 is punched to form the convex portion 13 made of the plastic flow portion of the material of the first plate member 10 and protruding from the edge portion of the first plate member 10 in the punching direction. a step of forming recesses 23 capable of receiving the protrusions 13 in the surface 21 of the second plate 20; and a step of engaging the convex portion 13 of the first plate member 10 with the concave portion 23 of the second plate member 20 to restrict the movement of the first plate member 10 along the surface 21 of the second plate member 20 .
　この場合において、第１板材１０に対する打ち抜き加工は、第１板材１０の輪郭をなす外周縁部よりも内側の平面領域に、板厚方向に貫通する打ち抜き孔１５を形成する加工である。このとき、第１板材１０の縁部である、打ち抜き孔１５の内周縁部１５ａに凸部１３が形成される。 In this case, the punching process for the first plate material 10 is a process for forming a punched hole 15 penetrating in the plate thickness direction in a flat area inside the outer peripheral edge forming the outline of the first plate material 10 . At this time, the convex portion 13 is formed on the inner peripheral edge portion 15 a of the punched hole 15 , which is the edge portion of the first plate member 10 .
　上述のように、第１板材１０の表面１１と第２板材２０の表面２１との位置決め方法では、第１板材１０の凸部１３と、第２板材２０の凹部２３とを係合することで位置決めされる。したがって、両方の板材１０、２０に位置ずれを生じることなく位置決めするためには、第１板材１０の表面１１の複数箇所に凸部１３を形成し、第２板材２０の表面２１の対応した複数箇所に凹部２３を形成する。そして、両方の板材１０、２０の凸部１３と凹部２３を係合することにより、両方の板材１０、２０は位置ずれを生じることなく位置決めすることができる。 As described above, in the method of positioning the surface 11 of the first plate member 10 and the surface 21 of the second plate member 20, the convex portion 13 of the first plate member 10 and the concave portion 23 of the second plate member 20 are engaged with each other. Positioned. Therefore, in order to position both plate members 10 and 20 without positional deviation, convex portions 13 are formed at a plurality of locations on the surface 11 of the first plate member 10, and corresponding plurality of protrusions 13 are formed on the surface 21 of the second plate member 20. A recess 23 is formed at the location. By engaging the protrusions 13 and the recesses 23 of both the plate members 10 and 20, the plate members 10 and 20 can be positioned without any displacement.
（作用・効果）
　本実施形態の位置決め構造、及び位置決め方法によれば、第１板材１０の凸部１３は、板厚方向（打ち抜き方向）に突出している。この凸部１３は、打ち抜き加工によって第１板材１０の打ち抜き孔１５を形成する際に、打ち抜き方向への素材の塑性流動によって形成することができる。このため、塑性流動性が低い素材を位置決めする場合でも、打ち抜き方向へと素材を塑性流動させることで、十分な高さの凸部１３を容易に形成できる。 (action/effect)
According to the positioning structure and positioning method of the present embodiment, the convex portion 13 of the first plate member 10 protrudes in the plate thickness direction (punching direction). The convex portion 13 can be formed by plastic flow of the material in the punching direction when the punched hole 15 of the first plate member 10 is formed by punching. Therefore, even when positioning a material with low plastic fluidity, the convex portion 13 having a sufficient height can be easily formed by causing the material to plastically flow in the punching direction.
　また、この位置決め構造、及び位置決め方法によれば、第１板材１０の凸部１３を第２板材２０の凹部２３に係合することにより、第２板材２０の表面２１に沿った第１板材１０の移動（相対移動）を規制する。このため、相対移動を規制するために、第２板材２０の表面２１の一部を第１板材１０側へ隆起させ、その隆起部を第１板材１０に形成した打ち抜き孔１５又は凹部２３の内部に進入させる必要がない。換言すれば、第２板材２０の素材を流動させて隆起部を形成する必要がない。従って、この位置決め構造によれば、第１板材１０及び第２板材２０が塑性流動性の低い素材からなる場合でも、より確実な位置決めを実現することができる。 Further, according to this positioning structure and positioning method, by engaging the convex portion 13 of the first plate member 10 with the concave portion 23 of the second plate member 20 , the first plate member 10 is moved along the surface 21 of the second plate member 20 . movement (relative movement). Therefore, in order to restrict the relative movement, a part of the surface 21 of the second plate member 20 is raised toward the first plate member 10, and the raised portion is formed in the first plate member 10 by punching holes 15 or recesses 23. do not need to enter the In other words, it is not necessary to flow the material of the second plate member 20 to form the raised portion. Therefore, according to this positioning structure, more reliable positioning can be realized even when the first plate member 10 and the second plate member 20 are made of a material with low plastic flowability.
　凸部１３が打ち抜き孔１５の周方向に沿って延びる環状凸部であり、かつ凹部２３が凸部１３に沿って延びる環状溝である場合、凹部２３と凸部１３とを係合させることにより、２枚の板材１０、２０がより正確に位置決めされる。 When the convex portion 13 is an annular convex portion extending along the circumferential direction of the punched hole 15 and the concave portion 23 is an annular groove extending along the convex portion 13, by engaging the concave portion 23 and the convex portion 13, , the two plates 10, 20 are positioned more accurately.
　第２板材２０の表面２１を基準にした凹部２３の深さＤが、第２板材２０の表面２１と対向する第１板材１０の表面１１を基準にした凸部１３の高さＨ以上に形成されている場合、２枚の板材１０、２０の表面１１、２１同士を合わせた状態（面接触させた状態）で位置決めできるので、２枚の板材１０、２０を位置決めした状態で溶接しやすくなる。 The depth D of the concave portion 23 based on the surface 21 of the second plate 20 is formed to be greater than or equal to the height H of the convex portion 13 based on the surface 11 of the first plate 10 facing the surface 21 of the second plate 20. In this case, the surfaces 11 and 21 of the two plate materials 10 and 20 can be aligned (surface contact), so that the two plate materials 10 and 20 can be easily welded in the positioned state. .
　図１、２に示すように、打ち抜き孔１５の軸線１５ｂを含む断面において、凸部１３の先端１３ａの形状が鋭角である先端１３ａが凹部２３の内面に当接することで凸部１３と凹部２３とが係合して位置決めされる場合、２枚の板材１０、２０の位置決めを、より正確に行うことができる。 As shown in FIGS. 1 and 2, in a cross section including the axis 15b of the punched hole 15, the tip 13a of the projection 13 having an acute angle contacts the inner surface of the recess 23, so that the projection 13 and the recess 23 are separated from each other. are engaged and positioned, the positioning of the two plates 10, 20 can be performed more accurately.
　この位置決め構造、及び位置決め方法によれば、凸部１３を形成する工程（第１工程）において、打ち抜き加工に、開口部１１１ａに面取り面１１１ｂが形成されたダイ１１１とダイ１１１と協働して第１板材１０に打ち抜き加工するパンチ１１３が用いられ、パンチ１１３の作用により塑性流動した塑性流動部が、パンチ１１３と面取り面１１１ｂとで押圧されることで、凸部１３が形成される。 According to this positioning structure and positioning method, in the step of forming the convex portion 13 (first step), the die 111 having the chamfered surface 111b formed in the opening 111a and the die 111 cooperate with each other in the punching process. A punch 113 for punching the first plate 10 is used, and the convex portion 13 is formed by pressing the plastic flow portion that has been plastically flowed by the action of the punch 113 by the punch 113 and the chamfered surface 111b.
　また、この位置決め構造、及び位置決め方法によれば、第１板材１０に打ち抜き加工するパンチ１１３のパンチチップ１１９ａと、第１板材１０を載置可能に設けられたダイ１１１の開口部１１１ａとのクリアランスの調整及びダイ１１１の表面を基準にした面取り面１１１ｂの深さＤ１を規定することで、第１板材１０の表面１１を基準にした凸部１３の高さＨを所定の高さに形成する。 Further, according to this positioning structure and positioning method, the clearance between the punch tip 119a of the punch 113 for punching the first plate material 10 and the opening 111a of the die 111 on which the first plate material 10 can be placed is and by defining the depth D1 of the chamfered surface 111b with reference to the surface of the die 111, the height H of the convex portion 13 with reference to the surface 11 of the first plate member 10 is formed at a predetermined height. .
　打ち抜き加工するパンチ１１３のパンチチップ１１９ａの作用によって形成された第１板材１０の塑性流動部からなる凸部１３が、前記環状の凹部に倣う形状に形成される。このため、パンチチップ１１９ａとダイ１１１の開口部１１１ａのクリアランスにより金属の塑性流動量を調整すると共に、ダイ１１１の面取り面１１１ｂの深さＤ１を変更することで、所望の高さの凸部１３を得ることができる。なお凸部１３を高くするには、クリアランスを大きくすると共に、面取り面１１１ｂを深くすることになる。しかしながらクリアランスが過多だと凸部１３が鋭角にならない。つまり、この方法によれば、パンチチップ１１９ａとダイ１１１の開口部１１１ａのクリアランス及び面取り面１１１ｂの深さＤ１を変更することで、凸部１３の高さＨを容易に変更することができる。 A convex portion 13, which is a plastic flow portion of the first plate member 10 formed by the action of the punch tip 119a of the punch 113 for punching, is formed in a shape following the annular concave portion. Therefore, by adjusting the amount of plastic flow of the metal by adjusting the clearance between the punch tip 119a and the opening 111a of the die 111, and by changing the depth D1 of the chamfered surface 111b of the die 111, the projection 13 with a desired height can be obtained. can be obtained. In order to heighten the convex portion 13, the clearance is increased and the chamfered surface 111b is deepened. However, if the clearance is excessive, the convex portion 13 will not form an acute angle. That is, according to this method, the height H of the projection 13 can be easily changed by changing the clearance between the punch tip 119a and the opening 111a of the die 111 and the depth D1 of the chamfered surface 111b.
　面取り面１１１ｂの深さＤ１は、凸部１３の所望の高さが、第２板材２０の凹部２３の深さＤとの関係式Ｈ≦Ｄを満たす所定の高さＨとなる範囲で選択される。 The depth D1 of the chamfered surface 111b is selected within a range in which the desired height of the projection 13 and the depth D of the recess 23 of the second plate 20 satisfy a predetermined height H that satisfies the relational expression H≦D. be.
　なお、面取り面１１１ｂの深さＤ１を０．６ｍｍ以下にする場合、形成された凸部１３の形状（凸部１３の先端１３ａの角度θ１）を、より確実に前記環状の凹部の形状（面取り面１１１ｂの傾斜角度θ４）に倣う形状（θ１＝θ４）に成形することができる。 When the depth D1 of the chamfered surface 111b is set to 0.6 mm or less, the shape of the formed convex portion 13 (the angle θ1 of the tip 13a of the convex portion 13) is more reliably matched to the shape of the annular concave portion (chamfered It can be formed into a shape (θ1=θ4) following the inclination angle θ4) of the surface 111b.
　また、例えば特許文献１等に記載される従来の位置決め構造、及び位置決め方法では、ワークに貫通孔を形成することなく凸部を形成していた。このため、従来の位置決め構造、位置決め方法で凸部の形成に用い得る金型、装置には、例えばパンチヘッドのハイト高さの微調整の精度、あるいは装置の下死点のバラつきの精度について、高い精度が要求されていた。 In addition, in the conventional positioning structure and positioning method described in, for example, Patent Document 1, convex portions are formed without forming through holes in the workpiece. For this reason, the molds and devices that can be used to form convex portions with conventional positioning structures and positioning methods have, for example, the accuracy of fine adjustment of the height of the punch head, or the accuracy of variations in the bottom dead center of the device. High precision was required.
　これに対して、本実施形態の位置決め構造、及び位置決め方法では、第１板材１０に打ち抜き孔１５を形成することで第１板材１０の表面１１に凸部１３を形成している。この構成、方法によれば、パンチヘッドのハイト高さの微調整の精度、あるいは装置の下死点のバラつきの精度等を考慮することなく、位置決めに用い得る凸部１３を第１板材１０の表面１１に形成することができる。 On the other hand, in the positioning structure and positioning method of the present embodiment, the projections 13 are formed on the surface 11 of the first plate member 10 by forming the punched holes 15 in the first plate member 10 . According to this configuration and method, the convex portion 13 that can be used for positioning is formed on the first plate 10 without considering the accuracy of fine adjustment of the height of the punch head or the accuracy of variations in the bottom dead center of the apparatus. It can be formed on surface 11 .
　また、ワークに貫通孔を形成することなく凸部を形成していた例えば特許文献１等に記載される従来の位置決め構造、位置決め方法では、凸部を板材の端部近傍に形成した場合、パンチの先端面に備えた環状のリブが板材の表面に食い込み、金属が塑性流動する際、金属の一部が板材の端面に逃げて、板材の端面が膨れる恐れがあった。 In addition, in the conventional positioning structure and positioning method described in, for example, Patent Document 1, in which a convex portion is formed without forming a through hole in the work, when the convex portion is formed near the edge of the plate material, the punch Annular ribs provided on the tip of the plate bite into the surface of the plate, and when the metal undergoes plastic flow, part of the metal may escape to the end face of the plate, causing the end face of the plate to swell.
　これに対して、本実施形態の位置決め構造、及び位置決め方法では、第１板材１０の表面１１に凸部１３を形成する際に第１板材１０に打ち抜き孔１５を形成しているため、金属が塑性流動する際、金属の一部が板材の端部に逃げることを抑制できる。 On the other hand, in the positioning structure and positioning method of the present embodiment, since the punched holes 15 are formed in the first plate member 10 when forming the projections 13 on the surface 11 of the first plate member 10, the metal is It is possible to prevent part of the metal from escaping to the edge of the plate during plastic flow.
（変更例）
　以上、実施形態に沿って本開示の内容を説明したが、本開示はこれらの記載に限定されるものではなく、種々の変形及び改良が可能であることは、当業者には自明である。 (Change example)
Although the contents of the present disclosure have been described above according to the embodiments, it is obvious to those skilled in the art that the present disclosure is not limited to these descriptions and that various modifications and improvements are possible.
　例えば、位置決め構造はつぎのように変更してもよい。図６は、変更例に係る、第１板材１０Ａの凸部１３Ａと第２板材２０Ａの凹部２３Ａとを係合させて位置決めする前の状態の説明図である。図７は、変更例に係る、第１板材１０Ａの凸部１３Ａと第２板材２０Ａの凹部２３Ａとを係合させて位置決めした位置決め構造の説明図である。 For example, the positioning structure may be changed as follows. FIG. 6 is an explanatory diagram of a state before engaging and positioning the convex portion 13A of the first plate member 10A and the concave portion 23A of the second plate member 20A according to the modification. FIG. 7 is an explanatory diagram of a positioning structure according to a modified example in which the protrusion 13A of the first plate member 10A and the recess 23A of the second plate member 20A are engaged and positioned.
　変更例に係る位置決め構造では、図６、７に示すように、第１板材１０Ａに形成された凸部１３Ａの形状、配置、及び第２板材２０Ａに形成された凹部２３Ａの形状、配置が、実施形態の第１板材１０の凸部１３や第２板材２０の凹部２３と異なる。 In the positioning structure according to the modified example, as shown in FIGS. It is different from the convex portion 13 of the first plate member 10 and the concave portion 23 of the second plate member 20 of the embodiment.
　具体的に、図７に示すように、変更例では、第２板材２０に形成された凹部２３Ａでは、中央部側の第１側壁面２９Ａの角度θ２Ａが、第２側壁面３１Ａの角度θ３Ａよりも大きくなっており（θ３Ａ＜θ２Ａ）、第１板材１０Ａの凸部１３Ａと第２板材２０Ａの凹部２３Ａとが係合した状態で、凸部１３Ａの先端１３Ａａに当接し得る凹部２３Ａの内面の部位が、角度θ３Ａが小さい第２側壁面３１Ａと底面２５Ａとの交差部近傍に位置している点が、実施形態の位置決め構造と異なる。 Specifically, as shown in FIG. 7, in the modified example, in the concave portion 23A formed in the second plate member 20, the angle θ2A of the first side wall surface 29A on the central portion side is greater than the angle θ3A of the second side wall surface 31A. (θ3A<θ2A), and the inner surface of the concave portion 23A that can abut the tip 13Aa of the convex portion 13A in a state where the convex portion 13A of the first plate member 10A and the concave portion 23A of the second plate member 20A are engaged. The positioning structure differs from the positioning structure of the embodiment in that the portion is located near the intersection between the second side wall surface 31A and the bottom surface 25A where the angle θ3A is small.
　なお、第１実施形態及び変更例では、凸部１３、１３Ａと凹部２３、２３Ａとが係合した状態で、凸部１３、１３Ａの先端１３ａ、１３Ａａが凹部２３、２３Ａの底面２５、２５Ａ、あるいは凹部２３、２３Ａの第１側壁面２９Ａあるいは第２側壁面３１Ａの底面２５、２５Ａ近傍に位置している。しかし、凸部１３、１３Ａの先端１３ａ、１３Ａａは、凹部２３、２３Ａの内面近傍に位置していればよい。ただし、凸部１３、１３Ａと凹部２３、２３Ａとの係合状態が解除されることを抑制するために、凸部１３、１３Ａの高さＨと、凹部２３、２３Ａの深さＤとは、関係式Ｈ≧Ｄ／２を満たしていることが好ましい。 In the first embodiment and the modified example, when the projections 13, 13A and the recesses 23, 23A are engaged with each other, the tips 13a, 13Aa of the projections 13, 13A are aligned with the bottom surfaces 25, 25A, Alternatively, it is located in the vicinity of the bottom surfaces 25, 25A of the first side wall surface 29A or the second side wall surface 31A of the recesses 23, 23A. However, the tips 13a, 13Aa of the projections 13, 13A only need to be located near the inner surfaces of the recesses 23, 23A. However, in order to prevent the engagement state between the protrusions 13 and 13A and the recesses 23 and 23A from being released, the height H of the protrusions 13 and 13A and the depth D of the recesses 23 and 23A are It is preferable that the relational expression H≧D/2 is satisfied.
　また、凸部１３、１３Ａと凹部２３、２３Ａとが係合した状態で凸部１３、１３Ａの先端１３ａ、１３Ａａを凹部２３、２３Ａの内面に当接させる場合、凸部１３、１３Ａと凹部２３、２３Ａとが係合した状態から板厚方向に押圧することで、凸部１３、１３Ａの先端１３ａ、１３Ａａを凹部２３、２３Ａの内面に密着させてもよい。 When the tips 13a and 13Aa of the protrusions 13 and 13A are brought into contact with the inner surfaces of the recesses 23 and 23A while the protrusions 13 and 13A and the recesses 23 and 23A are engaged with each other, the protrusions 13 and 13A and the recesses 23 , 23A may be pressed in the plate thickness direction to bring the tips 13a, 13Aa of the protrusions 13, 13A into close contact with the inner surfaces of the recesses 23, 23A.
　さらに、凸部１３、１３Ａの先端１３ａ、１３Ａａを凹部２３、２３Ａの内面に当接した状態に係合したうえで、係合状態の第１板材１０、第２板材２０を板厚方向に押圧することで、凸部１３、１３Ａの先端１３ａ、１３Ａａを凹部２３、２３Ａに密着させてもよい。この場合、板厚方向に押圧によって先端１３ａ、１３Ａａが凹部２３、２３Ａに密着し易くするために、角度θ１、θ１Ａを所定の角度以下の鋭角に形成してもよい。例えば、角度θ１、θ１Ａを３０°以下にしてもよい。 Furthermore, after the tips 13a and 13Aa of the projections 13 and 13A are engaged with the inner surfaces of the recesses 23 and 23A, the first plate member 10 and the second plate member 20 in the engaged state are pressed in the plate thickness direction. By doing so, the tips 13a and 13Aa of the projections 13 and 13A may be brought into close contact with the recesses 23 and 23A. In this case, the angles .theta.1 and .theta.1A may be formed at acute angles equal to or less than a predetermined angle so that the tips 13a and 13Aa are easily brought into close contact with the recesses 23 and 23A by pressing in the plate thickness direction. For example, the angles θ1 and θ1A may be 30° or less.
　また、凸部の形状及び凹部の形状は、凸部１３、１３Ａの形状及び凹部２３、２３Ａの形状のような円環状に限定されない。例えば、凸部の形状及び凹部の形状は、四角形状や長円形状等の環状であってもよい。また、例えば、凸部は、面取り面が開口部の周縁部に断続的に形成されたダイを用いて形成してもよい。そして、凹部は、凸部と凹部とが互いに係合可能であるように、凸部を受け入れ可能な位置に溝を形成し得る先端形状のパンチを用いて形成してもよい。 Also, the shape of the projections and the shape of the recesses are not limited to annular shapes such as the shapes of the projections 13 and 13A and the shapes of the recesses 23 and 23A. For example, the shape of the convex portion and the shape of the concave portion may be annular such as square or oval. Further, for example, the convex portion may be formed using a die in which a chamfered surface is intermittently formed on the peripheral edge portion of the opening. Then, the recess may be formed using a tip-shaped punch capable of forming a groove at a position capable of receiving the protrusion so that the protrusion and the recess can be engaged with each other.
（第２の実施形態）
　図８は、第１板材５０の凸部５３と第２板材６０の凹部６３とを係合させて位置決めした状態を説明する図である。図９は、図８のＡＡ断面を示す図である。図１０は、図９において破線で囲まれた領域を拡大して示す図である。図１１は、第１板材５０の凸部５３と第２板材６０の凹部６３とを係合させて位置決めする前の状態を説明する図である。 (Second embodiment)
FIG. 8 is a diagram illustrating a state in which the protrusion 53 of the first plate member 50 and the recess 63 of the second plate member 60 are engaged and positioned. FIG. 9 is a diagram showing the AA cross section of FIG. FIG. 10 is an enlarged view of a region surrounded by broken lines in FIG. FIG. 11 is a diagram illustrating a state before engaging and positioning the convex portion 53 of the first plate member 50 and the concave portion 63 of the second plate member 60 .
　本実施形態に係る位置決め構造は、第１板材５０の縁部に設けられ、第１板材５０の一方の表面５１側から板厚方向に突出した、第１板材５０の素材の塑性流動部からなる凸部５３と、第２板材６０の一方の表面６１に形成された、凸部５３を受け入れ可能な凹部６３と、を備え、第１板材５０の一方の表面５１と第２板材６０の一方の表面６１とを向かい合うように重ね合わせて第１板材５０の凸部５３が第２板材６０の凹部６３に係合することにより、第２板材６０の一方の表面６１に沿う第１板材５０の移動を規制する。 The positioning structure according to the present embodiment is provided at the edge of the first plate member 50, and consists of a plastic flow portion of the material of the first plate member 50 that protrudes in the plate thickness direction from one surface 51 side of the first plate member 50. A convex portion 53 and a concave portion 63 formed on one surface 61 of the second plate member 60 and capable of receiving the convex portion 53 are provided. The first plate member 50 moves along one surface 61 of the second plate member 60 by overlapping the first plate member 50 so as to face the surface 61 and engaging the convex portion 53 of the first plate member 50 with the concave portion 63 of the second plate member 60 . to regulate.
　本実施形態において、凸部５３は、第１板材５０の縁部である、第１板材５０の輪郭をなす外周縁部５０ａに設けられている。 In the present embodiment, the convex portion 53 is provided on the outer peripheral edge portion 50 a forming the contour of the first plate member 50 , which is the edge portion of the first plate member 50 .
　つぎに、本実施形態に係る位置決め構造を詳細に説明する。第２の実施形態に係る位置決め構造が、第１の実施形態に係る位置決め構造と相違する点は、凸部５３が、第１板材５０の外周縁部５０ａに設けられている点である。以下、第１の実施形態との相違点を中心に説明を行う。 Next, the positioning structure according to this embodiment will be described in detail. The positioning structure according to the second embodiment differs from the positioning structure according to the first embodiment in that the convex portion 53 is provided on the outer peripheral edge portion 50 a of the first plate member 50 . The following description will focus on differences from the first embodiment.
　本実施形態において、第１板材５０は、例えば矩形状に形成されている。第１板材５０の輪郭をなす外周縁部５０ａは、互いに平行な一対の長手辺５０ａ１、５０ａ２と、互いに平行な一対の短手辺５０ａ３、５０ａ４とで構成されている。第２板材６０も矩形状に形成されており、第２板材６０は、第１板材５０よりも一回り程度大きなサイズを有している。しかしながら、第２板材６０の形状及びサイズは、これに限定されない。 In this embodiment, the first plate member 50 is formed, for example, in a rectangular shape. The outer peripheral edge portion 50a forming the outline of the first plate member 50 is composed of a pair of parallel long sides 50a1 and 50a2 and a pair of parallel short sides 50a3 and 50a4. The second plate member 60 is also formed in a rectangular shape, and the second plate member 60 is one size larger than the first plate member 50 . However, the shape and size of the second plate member 60 are not limited to this.
　第１板材５０の外周縁部５０ａには、板厚方向（図９における下方向）に沿って突出する凸部５３が成形されている。凸部５３は、第１板材５０の一方の表面５１（以下単に「表面５１」という）側に起立するように突出している。凸部５３は、打ち抜き加工より外周縁部５０ａを形成する際に塑性流動した第１板材５０の素材である塑性流動部から形成されている。 A convex portion 53 is formed on the outer peripheral edge portion 50a of the first plate member 50 so as to protrude along the plate thickness direction (downward direction in FIG. 9). The convex portion 53 protrudes so as to stand on one surface 51 (hereinafter simply referred to as “surface 51”) of the first plate member 50 . The convex portion 53 is formed from a plastically flowing portion that is the material of the first plate member 50 that plastically flows when the outer peripheral edge portion 50a is formed by punching.
　図８に示す例では、一方の長手辺５０ａ１に対して二つの凸部５３が設けられ、一方の短手辺５０ａ３に対して一つの凸部５３が設けられている。 In the example shown in FIG. 8, two protrusions 53 are provided for one longitudinal side 50a1, and one protrusion 53 is provided for one short side 50a3.
　凸部５３は、外周縁部５０ａ（長手辺５０ａ１又は短手辺５０ａ３）に沿って延びる所定長さの直線状凸部である。言い換えると、第１板材５０の表面５１を第２板材６０側から（図９における下方から）見ると、凸部５３は、直線状に形成されている。凸部５３は、外周縁部５０ａの全周に亘って形成されているのではく、外周縁部５０ａの一部に形成されている。 The convex portion 53 is a linear convex portion with a predetermined length that extends along the outer peripheral edge portion 50a (the long side 50a1 or the short side 50a3). In other words, when the surface 51 of the first plate member 50 is viewed from the second plate member 60 side (from below in FIG. 9), the convex portion 53 is formed in a straight line. The convex portion 53 is not formed over the entire circumference of the outer peripheral edge portion 50a, but is formed in a part of the outer peripheral edge portion 50a.
　図１０に示すように、第１板材５０の他方の表面のうち、凸部５３と対応する部位は、加工時のパンチの作用により、表面５１側に向けて僅かに引き込まれるように変形していてもよい。つまり、凸部５３の反対側に位置する部位は、所謂「だれ」変形と呼ばれる、変形をした部分を含んでもよい。 As shown in FIG. 10, on the other surface of the first plate 50, the portion corresponding to the convex portion 53 is deformed so as to be slightly pulled toward the surface 51 by the action of the punch during processing. may In other words, the portion located on the opposite side of the convex portion 53 may include a deformed portion called so-called "slip" deformation.
　第２板材６０の一方の表面６１（以下単に「表面６１」という）には、第１板材５０の凸部５３を受け入れ可能な凹部６３が形成されている。凹部６３は、凸部５３を受け入れることができるように、凸部５３に沿って延びる直線状溝である。第２板材６０の一方の表面６１を第１板材５０側から（図９における上方から）見ると、凹部６３が直線状に形成されている。また、第１板材５０が備える３つの凸部５３と対応して、第２板材６０の表面６１には、３つの凹部６３が設けられており、３つの凹部６３の位置は、第１板材５０に設けられた３つの凸部５３の位置と対応している。 A concave portion 63 capable of receiving the convex portion 53 of the first plate member 50 is formed on one surface 61 of the second plate member 60 (hereinafter simply referred to as "surface 61"). The recess 63 is a linear groove extending along the protrusion 53 so as to receive the protrusion 53 . When one surface 61 of the second plate member 60 is viewed from the first plate member 50 side (from above in FIG. 9), a concave portion 63 is formed in a straight line. In addition, three concave portions 63 are provided on the surface 61 of the second plate member 60 corresponding to the three convex portions 53 provided on the first plate member 50, and the positions of the three concave portions 63 are , corresponding to the positions of the three projections 53 provided on the .
　図１１に示すように、第１の実施形態と同様、第２板材６０の表面６１に対する凹部６３の最大深さＤ０の寸法は、凸部５３を受け入れ可能であるように、第１板材５０の表面５１から凸部５３の先端５３ａまでの高さＨ以上の寸法に設定されている（Ｈ≦Ｄ０）。 As shown in FIG. 11, as in the first embodiment, the maximum depth D0 of the concave portion 63 with respect to the surface 61 of the second plate member 60 is set so that the convex portion 53 can be received. The dimension is set to be equal to or greater than the height H from the surface 51 to the tip 53a of the projection 53 (H≦D0).
　凹部６３の内面は、底面６４と、底面６４よりも内側に形成された第１側壁面６５と、底面６４よりも外側に形成された第２側壁面６６とを備えている。なお、環状溝と直線状溝との相違はあるが、第２の実施形態に係る凹部６３における底面６４、第１側壁面６５、及び第２側壁面６６の関係は、第１の実施形態に示す凹部２３における底面２５、第１側壁面２９、及び第２側壁面３１の関係と同じである。 The inner surface of the recess 63 has a bottom surface 64 , a first side wall surface 65 formed inside the bottom surface 64 , and a second side wall surface 66 formed outside the bottom surface 64 . Although there is a difference between the annular groove and the linear groove, the relationship between the bottom surface 64, the first side wall surface 65, and the second side wall surface 66 in the concave portion 63 according to the second embodiment is the same as in the first embodiment. It is the same as the relationship between the bottom surface 25, the first side wall surface 29, and the second side wall surface 31 in the recess 23 shown.
　図８及び図１０に示すように、本実施形態の位置決め構造では、第１板材５０の表面５１と第２板材６０の表面６１とを向かい合うように重ね合わせることで、第１板材５０の表面６１に形成された凸部５３と、第２板材６０の表面６１に形成された凹部６３とが係合する。この係合により、第２板材６０の表面６１に沿う第１板材５０の移動が規制される。言い換えると、第１板材５０は、第２板材６０の表面６１に沿う方向（図８における左右方向及び上下方向）の移動が規制されて、第２板材６０に対して位置決めされる。凸部５３と凹部６３とが係合した状態では、第１板材５０の表面５１と第２板材６０の表面６１とが面接触している。 As shown in FIGS. 8 and 10, in the positioning structure of the present embodiment, the surface 51 of the first plate member 50 and the surface 61 of the second plate member 60 are overlapped so as to face each other, so that the surface 61 of the first plate member 50 The convex portion 53 formed on the second plate member 60 engages with the concave portion 63 formed on the surface 61 of the second plate member 60 . This engagement restricts movement of the first plate member 50 along the surface 61 of the second plate member 60 . In other words, the first plate member 50 is positioned with respect to the second plate member 60 while its movement in the direction along the surface 61 of the second plate member 60 (horizontal direction and vertical direction in FIG. 8) is restricted. In the state where the convex portion 53 and the concave portion 63 are engaged, the surface 51 of the first plate member 50 and the surface 61 of the second plate member 60 are in surface contact.
　つぎに、重ね合わせ溶接を行う二つの板材５０、６０のうちの、一方の板材である第１板材５０に対し、凸部５３を形成する方法について説明する。図１２から図１４は、凸部５３を形成する方法を説明する平面図である。なお、第１の実施形態に示す、凸部５３を成形する金型１１０は、本実施形態においても適用可能である。第２の実施形態では、パンチ１１３のパンチチップ１１９ａを刃先側から見た形状が矩形状に形成されている点、ダイ１１１の上面１１１ｃに開口する開口部１１１ａの形状が矩形状である点において相違している。 Next, a method of forming the convex portion 53 on the first plate member 50, which is one of the two plate members 50 and 60 to be lap-welded, will be described. 12 to 14 are plan views explaining a method of forming the convex portion 53. FIG. The mold 110 for molding the convex portion 53 shown in the first embodiment can also be applied to this embodiment. In the second embodiment, the shape of the punch tip 119a of the punch 113 when viewed from the cutting edge side is rectangular, and the shape of the opening 111a opening in the upper surface 111c of the die 111 is rectangular. are different.
　第１板材５０は、板金の母材２００から切り出される。まず、打ち抜き加工により、母材２００から第１板材５０を切り出す方法について説明する。 The first plate material 50 is cut out from a sheet metal base material 200 . First, a method of cutting out the first plate material 50 from the base material 200 by punching will be described.
　図１２に示されるように、所要の抜き型を用いた打ち抜き加工によって、母材２００に対して複数の矩形の開口部ＢＨを形成する。複数の開口部ＢＨは、第１板材５０の輪郭（外周縁部５０ａ）に沿って形成される。 As shown in FIG. 12, a plurality of rectangular openings BH are formed in the base material 200 by punching using a required punching die. A plurality of openings BH are formed along the outline of the first plate member 50 (outer peripheral edge 50a).
　このとき、第１板材５０の四隅となる部分を打ち残すことで、微小の接続部であるミクロジョイントＪｍを形成する。これにより、第１板材５０と母材２００とを連結したままにしておく。また、凸部５３を形成する部位（３箇所）には、開口部ＢＨを形成せずに、ミクロジョイントＪｍより幅の広いワイヤジョイントＪｗによって、第１板材５０と母材２００とを連結したままにしておく。 At this time, the four corners of the first plate member 50 are left to form micro joints Jm, which are minute connecting portions. Thereby, the first plate material 50 and the base material 200 are kept connected. In addition, the first plate member 50 and the base material 200 are connected by wire joints Jw wider than the micro joints Jm without forming the openings BH at the portions (three places) where the convex portions 53 are formed. leave it to
　つぎに、ダイ１１１及びパンチ１１３を含む金型１１０を用いて、ワイヤジョイントＪｗを打ち抜く。図１３では、パンチチップ１１９ａによる抜き形状が「Ｐｃ」で示されている。第１板材５０が連結された母材２００は、パンチチップ１１９ａによって打ち抜かれる打ち抜き端面が、第１板材５０の輪郭と対応するように位置決めされている。 Next, a die 110 including a die 111 and a punch 113 is used to punch out the wire joint Jw. In FIG. 13, the shape punched by the punch tip 119a is indicated by "Pc". The base material 200 to which the first plate material 50 is connected is positioned so that the punched end face punched by the punch tip 119 a corresponds to the outline of the first plate material 50 .
　パンチチップ１１９ａがワイヤジョイントＪｗを打ち抜くと、打ち抜き方向に、素材が塑性流動する塑性流動部が形成されることになる。パンチチップ１１９ａの作用によって形成された第１板材５０の塑性流動部は、ダイ１１１の面取り面１１１ｂとパンチチップ１１９ａの側壁とによって押圧される。この打ち抜き加工により、図１４に示されるように、第１板材５０の輪郭をなす外周縁部５０ａの任意の箇所に凸部５３が形成される。 When the punch tip 119a punches out the wire joint Jw, a plastic flow portion where the material plastically flows is formed in the punching direction. The plastic flow portion of the first plate 50 formed by the action of the punch tip 119a is pressed by the chamfered surface 111b of the die 111 and the sidewall of the punch tip 119a. As a result of this punching process, as shown in FIG. 14, convex portions 53 are formed at arbitrary locations on the outer peripheral edge portion 50a forming the outline of the first plate member 50. As shown in FIG.
　最後に、ミクロジョイントＪｍを周知の方法で切断することで、母材２００から第１板材５０が分離される。これにより、凸部５３を有する第１板材５０が作製される。 Finally, the first plate material 50 is separated from the base material 200 by cutting the micro joint Jm by a well-known method. As a result, the first plate member 50 having the protrusions 53 is produced.
　つぎに、重ね合わせ溶接を行う二つの板材５０、６０のうちの、他方の板材である第２板材６０に対し、凹部６３を形成する方法について説明する。図１５から図１７は、凹部６３を成形する方法を説明する平面図である。 Next, a method of forming recesses 63 in the second plate material 60, which is the other of the two plate materials 50 and 60 to be lap-welded, will be described. 15 to 17 are plan views explaining a method of forming the recess 63. FIG.
　まず、図１５に示すように、母材２１０に対し、成形金型によるコイニング加工を行って、凸部５３の位置及び数に応じた凹部６３を形成する。凹部６３は、コイニング加工による圧印によって形成されるため、凹部６３に隣接した部位に板厚方向に膨れた膨れ部Ｓ（一点鎖線）が生じる。 First, as shown in FIG. 15, the base material 210 is subjected to coining processing using a molding die to form recesses 63 corresponding to the positions and number of the protrusions 53 . Since the concave portion 63 is formed by coining by coining, a bulging portion S (one-dot chain line) bulging in the plate thickness direction is generated at a portion adjacent to the concave portion 63 .
　そこで、膨れ部Ｓを潰すための潰し加工を行う。膨れ部Ｓは、凹部６３を形成する際に抉られた部分の素材が塑性流動し、板厚方向に膨らむことで生じる。潰し加工により、膨れ部Ｓは、膨れた部分の素材が周辺部材に均一的に塑性流動し、膨れの度合が実用上支障のない程度に抑えられる。これにより、図１６に示すように、凹部６３の周囲は、実質的に平坦化される。 Therefore, a crushing process is performed to crush the bulging portion S. The bulging portion S is generated by plastic flow of the material of the gouged portion when forming the concave portion 63 and bulging in the plate thickness direction. By the crushing process, the material of the bulging portion S is uniformly plastically flowed to the peripheral member, and the degree of bulging is suppressed to a level that does not pose a practical problem. Thereby, as shown in FIG. 16, the periphery of the recess 63 is substantially flattened.
　つぎに、図１７に示すように、所要の抜き型を用いた打ち抜き加工によって、母材２１０に対して複数の矩形の開口部ＢＨを形成する。複数の開口部ＢＨは、第２板材６０の輪郭に沿って形成されている。このとき、第２板材６０の四隅となる部分を打ち残すことで、微小の接続部であるミクロジョイントＪｍを形成する。第２板材６０と母材２１０とを連結したままにしておく。このミクロジョイントＪｍは加工の最終段階で切断され、母材２１０から第２板材６０が分離される。これにより、凹部６３を有する第２板材６０が作成される。 Next, as shown in FIG. 17, a plurality of rectangular openings BH are formed in the base material 210 by punching using a required punching die. A plurality of openings BH are formed along the contour of the second plate member 60 . At this time, the four corners of the second plate member 60 are left to form micro joints Jm, which are minute connecting portions. The second plate material 60 and the base material 210 are kept connected. This micro joint Jm is cut at the final stage of processing to separate the second plate material 60 from the base material 210 . Thereby, the second plate material 60 having the concave portion 63 is created.
　なお、第１板材５０は、打ち抜き加工によって母材２００から切り出す方法に限定されず、以下に説明するようにレーザビームで切断する方法によって母材２００から切り出されてもよい。図１８から図２０は、凸部５３を成形する方法を説明する平面図である。 The first plate material 50 is not limited to the method of cutting out from the base material 200 by punching, but may be cut out from the base material 200 by cutting with a laser beam as described below. 18 to 20 are plan views explaining a method of forming the convex portion 53. FIG.
　図１８に示されるように、第１板材５０の輪郭（外周縁部５０ａ）に沿ってレーザビームを照射することで、母材２００をレーザビームによって切断する。このとき、凸部５３を形成する部位では、第１板材５０の輪郭通りではなく、輪郭よりも外側へと延出するような突出部Ｅａを形成するように、母材２００が切断される。また、第１板材５０の四隅を切り残すように切断を行うことで、微小の接続部であるミクロジョイントＪｍを形成する。 As shown in FIG. 18, the base material 200 is cut by the laser beam by irradiating the laser beam along the contour (outer peripheral edge portion 50a) of the first plate material 50. As shown in FIG. At this time, the base material 200 is cut so as to form a protruding portion Ea that extends outside the contour of the first plate member 50 instead of following the contour of the first plate member 50 at the portion where the convex portion 53 is to be formed. Further, by cutting the first plate material 50 so as to leave the four corners uncut, micro joints Jm, which are minute connecting portions, are formed.
　つぎに、図１９に示されるように、ダイ１１１及びパンチ１１３を含む金型１１０を用いて、突出部Ｅａを含む所定の範囲を打ち抜く。図２０では、パンチチップ１１９ａによる抜き形状が「Ｐｃ」で示されている。第１板材５０が連結された母材２００は、パンチチップ１１９ａによって打ち抜かれる打ち抜き端面が、第１板材５０の輪郭と対応するように位置決めされている。 Next, as shown in FIG. 19, a mold 110 including a die 111 and a punch 113 is used to punch out a predetermined range including the projecting portion Ea. In FIG. 20, the shape punched by the punch tip 119a is indicated by "Pc". The base material 200 to which the first plate material 50 is connected is positioned so that the punched end face punched by the punch tip 119 a corresponds to the outline of the first plate material 50 .
　パンチチップ１１９ａが突出部Ｅａを打ち抜くと、打ち抜き方向に、素材が塑性流動する塑性流動部が形成されることになる。パンチチップ１１９ａの作用によって形成された第１板材５０の塑性流動部は、ダイ１１１の面取り面１１１ｂとパンチチップ１１９ａの側壁とによって押圧される。この打ち抜き加工により、図２０に示されるように、第１板材５０の輪郭をなす外周縁部５０ａの一部に凸部５３が形成される。 When the punch tip 119a punches the projecting portion Ea, a plastic flow portion is formed in the punching direction where the material plastically flows. The plastic flow portion of the first plate 50 formed by the action of the punch tip 119a is pressed by the chamfered surface 111b of the die 111 and the sidewall of the punch tip 119a. As a result of this punching process, as shown in FIG. 20, a convex portion 53 is formed on a portion of the outer peripheral edge portion 50a forming the outline of the first plate member 50. As shown in FIG.
　最後に、ミクロジョイントＪｍを周知の方法で切断し、母材２００から第１板材５０が分離される。これにより、凸部５３を有する第１板材５０が作製される。 Finally, the micro joint Jm is cut by a known method to separate the first plate material 50 from the base material 200 . As a result, the first plate member 50 having the protrusions 53 is produced.
　なお、第２板材６０を母材２１０から切り出す方法も、打ち抜き加工で打ち抜く方法に限定されず、レーザビームで切断する方法であってもよい。 The method of cutting out the second plate material 60 from the base material 210 is not limited to the method of punching out by punching, but may be a method of cutting with a laser beam.
　そして、本実施形態の位置決め方法は、上記のように凸部５３及び凹部６３を形成することにより実施することが可能である。すなわち、本実施形態の位置決め方法は、第１板材５０に打ち抜き加工を行い、第１板材５０の縁部から打ち抜き方向に突出した第１板材５０の素材の塑性流動部からなる凸部５３を形成する工程と、第２板材６０の表面６１に、凸部５３を受け入れ可能な凹部６３を形成する工程と、第１板材５０の表面５１と第２板材６０の表面６１とを向かい合うように重ね合わせて第１板材５０の凸部５３を第２板材６０の凹部６３に係合させて、第２板材６０の表面６１に沿う第１板材５０の移動を規制する工程と、を備える。 Then, the positioning method of this embodiment can be implemented by forming the convex portion 53 and the concave portion 63 as described above. That is, in the positioning method of the present embodiment, the first plate member 50 is punched to form the convex portion 53 made of the plastic flow portion of the material of the first plate member 50 and protruding in the punching direction from the edge of the first plate member 50. a step of forming recesses 63 capable of receiving the protrusions 53 in the surface 61 of the second plate member 60; and a step of engaging the convex portion 53 of the first plate member 50 with the concave portion 63 of the second plate member 60 to restrict the movement of the first plate member 50 along the surface 61 of the second plate member 60 .
　この場合において、第１板材５０に対する打ち抜き加工は、第１板材５０の輪郭をなす外周縁部５０ａを形成する加工である。このとき、第１板材５０の縁部である、外周縁部５０ａに凸部５３が形成される。 In this case, the punching process for the first plate material 50 is a process for forming the outer peripheral edge portion 50a that forms the outline of the first plate material 50 . At this time, a convex portion 53 is formed on the outer peripheral edge portion 50 a that is the edge portion of the first plate member 50 .
　上述のように、第１板材５０の表面５１と第２板材６０の表面６１との位置決め方法では、第１板材５０の凸部５３と、第２板材６０の凹部６３とを係合することで位置決めされる。したがって、両方の板材５０、６０に位置ずれを生じることなく位置決めするためには、第１板材５０の外周縁部５０ａの複数箇所に凸部５３を形成し、第２板材６０の表面６１において、凸部５３と対応した位置及び数で凹部６３を形成する。そして、両方の板材５０、６０の凸部５３と凹部６３を係合することにより、両方の板材５０、６０は位置ずれを生じることなく、確実に位置決めを行うことができる。 As described above, in the method of positioning the surface 51 of the first plate member 50 and the surface 61 of the second plate member 60, by engaging the convex portion 53 of the first plate member 50 and the concave portion 63 of the second plate member 60, Positioned. Therefore, in order to position both plate members 50 and 60 without positional deviation, convex portions 53 are formed at a plurality of locations on the outer peripheral edge portion 50a of the first plate member 50, and on the surface 61 of the second plate member 60, Concave portions 63 are formed at positions and numbers corresponding to the convex portions 53 . By engaging the protrusions 53 and the recesses 63 of both the plate members 50 and 60, the plate members 50 and 60 can be reliably positioned without any displacement.
（作用・効果）
　本実施形態の位置決め構造、及び位置決め方法によれば、第１板材５０の凸部５３は、板厚方向（打ち抜き方向）に突出している。この凸部５３は、打ち抜き加工によって第１板材５０の外周縁部５０ａを形成する際に、打ち抜き方向への素材の塑性流動によって形成することができる。このため、塑性流動性が低い素材を位置決めする場合でも、打ち抜き方向へと素材を塑性流動させることで、十分な高さの凸部５３を容易に形成できる。 (action/effect)
According to the positioning structure and positioning method of the present embodiment, the convex portion 53 of the first plate member 50 protrudes in the plate thickness direction (punching direction). The convex portion 53 can be formed by plastic flow of the material in the punching direction when forming the outer peripheral edge portion 50a of the first plate member 50 by punching. Therefore, even when positioning a material with low plastic fluidity, the convex portion 53 having a sufficient height can be easily formed by causing the material to plastically flow in the punching direction.
　また、この位置決め構造、及び位置決め方法によれば、第１板材５０の凸部５３を第２板材６０の凹部６３に係合することにより、第２板材６０の表面６１に沿った第１板材５０の移動（相対移動）を規制する。例えば、第１板材５０に対して凸部を形成する手法として、第１板材５０の表面５１の一部を抉るように加工を行い、素材を塑性流動させることで、板厚方向に切り起こされた突起を形成する方法がある。ただし、この方法では、第１板材５０の板厚が薄い場合には、第１板材５０の表面５１を基準にした凸部５３の高さを大きく取れないという問題がある。また、切り起こしによって突起を形成するため、突起の高さを大きく取れないという問題がある。そのため、大きな板厚の板材に対して位置決めを確実に行うことができないという問題がある。 Further, according to this positioning structure and positioning method, by engaging the convex portion 53 of the first plate member 50 with the concave portion 63 of the second plate member 60 , the first plate member 50 is moved along the surface 61 of the second plate member 60 . movement (relative movement). For example, as a method of forming a convex portion on the first plate member 50, a part of the surface 51 of the first plate member 50 is gouged out, and the material is plastically flowed to cut and raise in the plate thickness direction. There is a method of forming the protrusions. However, in this method, when the plate thickness of the first plate member 50 is thin, there is a problem that the height of the convex portion 53 with respect to the surface 51 of the first plate member 50 cannot be made large. Moreover, since the projections are formed by cutting and raising, there is a problem that the height of the projections cannot be made large. Therefore, there is a problem that it is impossible to reliably position a plate material having a large thickness.
　この点、本実施形態の凸部５３によれば、第１板材５０の凸部５３が、素材の塑性流動によって打ち抜き方向に突出しているため、十分な高さの凸部５３を容易に形成することができる。これにより、より確実な位置決めを実現することができる。 In this regard, according to the convex portion 53 of the present embodiment, the convex portion 53 of the first plate member 50 protrudes in the punching direction due to the plastic flow of the material, so that the convex portion 53 having a sufficient height can be easily formed. be able to. This makes it possible to achieve more reliable positioning.
　この位置決め構造、及び位置決め方法において、凸部５３が外周縁部５０ａに沿って延びる直線状凸部であり、外周縁部の一部に設けられており、かつ凹部６３が凸部５３に沿って延びる直線状溝である。この位置決め構造によれば、凹部６３と凸部５３とを係合させることにより、２枚の板材５０、６０がより正確に位置決めされる。 In this positioning structure and positioning method, the convex portion 53 is a linear convex portion extending along the outer peripheral edge portion 50 a and is provided in a part of the outer peripheral edge portion, and the concave portion 63 is formed along the convex portion 53 . It is a linear groove that extends. According to this positioning structure, the two plate members 50 and 60 are positioned more accurately by engaging the concave portion 63 and the convex portion 53 .
　以上、本開示について詳細に説明したが、当業者にとっては、本開示が本開示中に説明した実施形態に限定されるものではないということは明らかである。本開示は、請求の範囲の記載により定まる本開示の趣旨及び範囲を逸脱することなく修正及び変更態様として実施することができる。したがって、本開示の記載は、例示説明を目的とするものであり、本開示に対して何ら制限的な意味を有するものではない。 Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in this disclosure. The present disclosure can be practiced with modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Accordingly, the description of the present disclosure is for illustrative purposes and is not meant to be limiting in any way.
　本願の開示は、２０２１年１２月２日に出願された特願２０２１－１９６４１６号、及び２０２２年１１月１８日に出願された特願２０２２－１８４６８５号に記載の主題と関連しており、それらの全ての開示内容は引用によりここに援用される。 The disclosure of the present application relates to the subject matter described in Japanese Patent Application No. 2021-196416 filed on December 2, 2021 and Japanese Patent Application No. 2022-184685 filed on November 18, 2022. The entire disclosure of is hereby incorporated by reference.

Claims (14)

  1. 　第１板材の縁部に設けられ、前記第１板材の一方の表面側から板厚方向に突出した、前記第１板材の素材の塑性流動部からなる凸部と、
    　第２板材の一方の表面に形成された、前記凸部を受け入れ可能な凹部と、を備え、
    　前記第１板材の一方の表面と前記第２板材の一方の表面とを向かい合うように重ね合わせて前記第１板材の前記凸部が前記第２板材の前記凹部に係合することにより、前記第２板材の一方の表面に沿う前記第１板材の移動を規制する、位置決め構造。     a convex portion, which is provided at the edge of the first plate and which protrudes in the plate thickness direction from one surface side of the first plate, and which is formed of a plastic flow portion of the material of the first plate;
    a concave portion formed on one surface of a second plate material and capable of receiving the convex portion;
    One surface of the first plate member and one surface of the second plate member are overlapped so as to face each other, and the convex portion of the first plate member is engaged with the concave portion of the second plate member to obtain the second plate member. A positioning structure for restricting movement of the first plate member along one surface of two plate members.
  2. 　前記凸部は、前記第１板材の縁部である、前記第１板材の輪郭をなす外周縁部に設けられている、請求項１に記載の位置決め構造。 The positioning structure according to claim 1, wherein the convex portion is provided on the outer peripheral edge portion forming the outline of the first plate member, which is the edge portion of the first plate member.
  3. 　前記凸部は、前記外周縁部に沿って延びる直線状凸部であり、前記外周縁部の一部に設けられており、
    　前記凹部は、前記直線状凸部に沿って延びる直線状溝である、請求項２に記載の位置決め構造。     The convex portion is a linear convex portion extending along the outer peripheral edge portion and is provided in a part of the outer peripheral edge portion,
    3. The positioning structure according to claim 2, wherein said recess is a linear groove extending along said linear projection.
  4. 　前記第１板材は、前記第１板材の輪郭をなす外周縁部よりも内側の平面領域に、板厚方向に貫通する打ち抜き孔を備え、
    　前記凸部は、前記第１板材の縁部である、前記打ち抜き孔の内周縁部に設けられている、請求項１に記載の位置決め構造。     The first plate is provided with a punched hole penetrating in the plate thickness direction in a planar region inside the outer peripheral edge forming the contour of the first plate,
    2. The positioning structure according to claim 1, wherein said convex portion is provided at an inner peripheral edge portion of said punched hole, which is an edge portion of said first plate member.
  5. 　前記凸部は、前記打ち抜き孔の周方向に沿って延びる環状凸部であり、
    　前記凹部は、前記環状凸部に沿って延びる環状溝である、請求項４に記載の位置決め構造。     The convex portion is an annular convex portion extending along the circumferential direction of the punched hole,
    5. The positioning structure according to claim 4, wherein said recess is an annular groove extending along said annular protrusion.
  6. 　前記第２板材の一方の表面を基準にした前記凹部の深さが、前記第２板材の一方の表面と対向する前記第１板材の一方の表面を基準にした前記凸部の高さ以上である請求項１に記載の位置決め構造。 The depth of the concave portion relative to one surface of the second plate member is equal to or greater than the height of the convex portion relative to one surface of the first plate member facing the one surface of the second plate member. A positioning structure according to claim 1.
  7. 　前記凸部の先端の断面形状は鋭角であり、
    　前記凸部の先端が前記凹部の内面に当接することで、前記凸部と前記凹部とが係合して位置決めされる、請求項１に記載の位置決め構造。     The cross-sectional shape of the tip of the protrusion is an acute angle,
    2. The positioning structure according to claim 1, wherein said protrusion and said recess are engaged and positioned by the tip of said protrusion coming into contact with the inner surface of said recess.
  8. 　第１板材に打ち抜き加工を行い、前記第１板材の縁部から打ち抜き方向に突出した前記第１板材の素材の塑性流動部からなる凸部を形成する第１工程と、
    　第２板材の一方の表面に、前記凸部を受け入れ可能な凹部を形成する第２工程と、
    　前記第１板材の一方の表面と前記第２板材の一方の表面とを向かい合うように重ね合わせて前記第１板材の前記凸部を前記第２板材の前記凹部に係合させて、前記第２板材の前記表面に沿う前記第１板材の移動を規制する第３工程と、
    　を含む、位置決め方法。     A first step of punching a first plate material to form a convex portion composed of a plastic flow part of the material of the first plate material and protruding in the punching direction from the edge of the first plate material;
    a second step of forming a concave portion capable of receiving the convex portion on one surface of the second plate;
    One surface of the first plate member and one surface of the second plate member are overlapped so as to face each other, and the convex portion of the first plate member is engaged with the concave portion of the second plate member, thereby forming the second plate member. a third step of restricting movement of the first plate along the surface of the plate;
    Positioning methods, including
  9. 　前記第１板材に対する前記打ち抜き加工は、前記第１板材の輪郭をなす外周縁部を形成する加工であり、
    　前記第１板材の縁部である、前記外周縁部に前記凸部が形成される、請求項８に記載の位置決め方法。     The punching process for the first plate material is a process for forming an outer peripheral edge forming an outline of the first plate material,
    9. The positioning method according to claim 8, wherein the convex portion is formed on the outer peripheral edge, which is the edge of the first plate member.
  10. 　前記凸部は、前記外周縁部に沿って延びる直線状凸部であり、前記外周縁部の一部に設けられており、
    　前記凹部は、前記直線状凸部に沿って延びる直線状溝である、請求項９に記載の位置決め方法。     The convex portion is a linear convex portion extending along the outer peripheral edge portion and is provided in a part of the outer peripheral edge portion,
    10. The positioning method according to claim 9, wherein said concave portion is a linear groove extending along said linear convex portion.
  11. 　前記第１板材に対する前記打ち抜き加工は、前記第１板材の輪郭をなす外周縁部よりも内側の平面領域に、板厚方向に貫通する打ち抜き孔を形成する加工であり、
    　前記第１板材の縁部である、前記打ち抜き孔の内周縁部に前記凸部が形成される、請求項８に記載の位置決め方法。     The punching of the first plate is a process of forming a punched hole penetrating in the plate thickness direction in a planar region inside the outer peripheral edge forming the outline of the first plate,
    9. The positioning method according to claim 8, wherein the protrusion is formed on the inner peripheral edge of the punched hole, which is the edge of the first plate.
  12. 　前記凸部は、前記打ち抜き孔の周方向に沿って延びる環状凸部であり、
    　前記凹部は、前記環状凸部に沿って延びる環状溝である、請求項１１に記載の位置決め方法。     The convex portion is an annular convex portion extending along the circumferential direction of the punched hole,
    12. The positioning method according to claim 11, wherein said recess is an annular groove extending along said annular protrusion.
  13. 　前記第１工程において、前記打ち抜き加工に、開口部に面取り面が形成されたダイと前記ダイと協働して前記第１板材に打ち抜き加工するパンチが用いられ、
    　前記パンチの作用により塑性流動した前記塑性流動部が、前記パンチと前記面取り面とで押圧されることで、前記凸部が形成される、請求項８に記載の位置決め方法。     In the first step, a die having a chamfered surface at an opening and a punch for punching the first plate in cooperation with the die are used for the punching,
    9. The positioning method according to claim 8, wherein the convex portion is formed by pressing the plastically fluidized portion that has been plastically fluidized by the action of the punch by the punch and the chamfered surface.
  14. 　前記第１板材に打ち抜き加工する前記パンチのパンチチップと、前記第１板材を載置可能に設けられた前記ダイの開口部とのクリアランスの調整及び前記ダイの表面を基準にした前記面取り面の深さを規定することで、前記第１板材の一方の表面を基準にした前記凸部の高さを所定の高さに形成する、請求項１３に記載の位置決め方法。 Adjustment of the clearance between the punch tip of the punch for punching the first plate material and the opening of the die on which the first plate material can be placed, and adjustment of the chamfered surface based on the surface of the die. 14. The positioning method according to claim 13, wherein the height of the convex portion with respect to one surface of the first plate member is formed to a predetermined height by defining the depth.
PCT/JP2022/043665 2021-12-02 2022-11-28 Positioning structure and positioning method WO2023100782A1 (en)

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JP2021196416 2021-12-02
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JP2022184685A JP2023082665A (en) 2021-12-02 2022-11-18 Positioning structure and positioning method

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JPS5973037U (en) * 1982-11-06 1984-05-17 太平洋工業株式会社 Mild steel thin plate punching burring mold
JPH0626737B2 (en) * 1989-10-23 1994-04-13 中村製作所株式会社 Shaft forming method for plate material
JPH04134291U (en) * 1991-02-18 1992-12-14 横河電機株式会社 Welding positioning structure
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JP2019115922A (en) * 2017-12-27 2019-07-18 株式会社アマダホールディングス Joining positioning method of plate material and joining structure of plate material
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