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WO2006047848A1 - Pince à river, poinçon et procédé d'utilisation associé - Google Patents

Pince à river, poinçon et procédé d'utilisation associé Download PDF

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Publication number
WO2006047848A1
WO2006047848A1 PCT/CA2004/001934 CA2004001934W WO2006047848A1 WO 2006047848 A1 WO2006047848 A1 WO 2006047848A1 CA 2004001934 W CA2004001934 W CA 2004001934W WO 2006047848 A1 WO2006047848 A1 WO 2006047848A1
Authority
WO
WIPO (PCT)
Prior art keywords
die
punch
sheets
clinching tool
cavity
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CA2004/001934
Other languages
English (en)
Inventor
Victor Robinson
Philip Donaldson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Glencore Canada Corp
Original Assignee
Falconbrige Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Falconbrige Ltd filed Critical Falconbrige Ltd
Priority to FI20070361A priority Critical patent/FI20070361A7/fi
Priority to CA002586776A priority patent/CA2586776A1/fr
Priority to PCT/CA2004/001934 priority patent/WO2006047848A1/fr
Priority to AU2004324570A priority patent/AU2004324570A1/en
Publication of WO2006047848A1 publication Critical patent/WO2006047848A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing

Definitions

  • the present invention relates to clinching tools, dies and methods of their use. More specifically the present invention relates to punch and die assemblies for mechanically interconnecting ductile sheets of material of various thicknesses.
  • Double stroke methods typically include a die having a moveable anvil which, following a first step drawing an amount of the sheets being interconnected into the die, pushes the drawn material out the die prior to a subsequent compression step creating the mechanical interlock.
  • a die for use with a punch for mechanically interconnecting a plurality of sheets of a ductile material.
  • the die comprises a die cavity comprising a closed end. An inner surface of the closed end has a raised surface profile.
  • the clinching tool for mechanically interconnecting at least two stacked sheets of a ductile material.
  • the clinching tool comprise a punch, a die comprising a die cavity, a closed end of the cavity having a raised surface profile, and a controllable source of pressure between the punch and the die. When the source of pressure is applied between the punch and die, the punch draws a clinch volume of the sheets substantially completely into the die cavity.
  • a method for mechanically interconnecting at least two stacked sheets of a ductile material comprises the steps of providing a die comprising a die cavity, a closed end of the cavity having a raised surface profile, drawing a clinch volume of the at least two sheets into the die cavity, the clinch volume being deformed by the die such that adjacent sheets mechanically interconnect, and stripping the sheets from the die.
  • a mechanically interconnected stack of ductile sheets comprising at least one region of deformation, wherein each of the sheets is deformed in the region of deformation, each of the deformations interacting together to form a mechanical bond and a protrusion on a first surface of the stack in the region of deformation, the protrusion comprising a curved depression towards a centre thereof.
  • the die for use with a punch for mechanically interconnecting at least two sheets of a ductile material.
  • the die comprises a die cavity comprising a sidewall and a bottom wall, the bottom wall defining a raised surface within the cavity.
  • a die for use with a punch for mechanically interconnecting at least two sheets of a ductile material.
  • the die comprises a die cavity comprising a sidewall and a bottom wall, the bottom wall defining a curved surface within the cavity.
  • Figure 1 provides a front perspective view of a clinching tool in accordance with an illustrative embodiment of the present invention
  • Figure 2 provides a top perspective view of a clinching tool detailing the punch and die mechanisms in accordance with an illustrative embodiment of the present invention
  • Figure 3A provides a front perspective view of a punch in accordance with an illustrative embodiment of the present invention
  • Figure 3B provides a front perspective view of a punch in accordance with an alternative illustrative embodiment of the present invention
  • Figure 4 provides a front perspective view of a die in accordance with an illustrative embodiment of the present invention
  • Figure 5A provides a sectional view of a punch and die in accordance with an illustrative embodiment of the present invention
  • Figure 5B provides a detailed sectional view of a die cavity in accordance with an illustrative embodiment of the present invention
  • Figure 6A provides a sectional view of a punch and die with a pair of sheets placed there between in accordance with an illustrative embodiment of the present invention
  • Figure 6B provides a sectional view of a punch and die with a pair of sheets drawn into the die cavity in accordance with an illustrative embodiment of the present invention.
  • Figure 7 provides a detailed front perspective sectional view of a clinch in accordance with an illustrative embodiment of the present invention.
  • the clinching tool 10 comprises a vertically mounted hydraulic cylinder 12 supported at an upper end 14 to a framework 16 manufactured from heavy structural steel or the like.
  • a ram 18 exits a lower end 20 of the hydraulic cylinder 12 and is adapted for vertical movement relative to same.
  • a controllable source of hydraulic fluid and pressure 22 is interconnected with the cylinder 12 via a control valve mechanism 24 and a pair of hoses 26, 28.
  • the ram 18 reciprocates relative to the lower end 20 of the cylinder 14 by controlling the direction of flow of pressurised hydraulic fluid using a control valve 24.
  • the control valve 24 is equipped with a control lever 30 for manually controlling the direction of flow of hydraulic fluid.
  • a die anvil (or bed) 32 is secured to the framework 16 below the hydraulic cylinder 12 and ram 18 assembly.
  • a punch 34 is removeably secured to an end 36 of the ram 18 and moves with the ram 18 relative to a die 38.
  • the die 38 is held securely yet removeably in the die anvil 32 illustratively using a collet type mount.
  • the punch 34 which may be constructed for example of heat treated D2 tool steel, powdered metallurgical tool steel (PM tool steel, such as Vanadis 6®), or other materials of the like, is presented in this illustrative embodiment as having a circular cross section. It should be understood that, although the present illustrative embodiment discloses a punch having generally circular cross sections, other cross sections, for example square, rectangular or oblong, would also provide suitable punch shapes.
  • punch 34 comprises an elongated punch tip 40 of circular cross section extending downwardly from a flat annular punch shoulder 42.
  • a punch base 44 comprising an inverted frustum portion 46 and a cylindrical portion 48 extends upwardly and outwardly therefrom.
  • a threaded punch fastening post 50 which is smaller than the cylindrical section 48 of the punch base 44 is integrally attached thereto thus defining an annular shelf 52 at their juncture.
  • the punch 34 is secured to the ram 18 simply by inserting the threaded punch fastening post 50 into a threaded opening (not shown) machined into the end 36 of the ram 18 and tightening the punch 34 until the annular shelf 52 is resting tightly against the end 36 of the ram 18. While securely fastened to the ram 18, the punch 34 remains easily accessible and quickly interchangeable.
  • the punch tip 40 comprises a convex or rounded tip end surface 54, which facilitates penetration of the punch tip 40 into the stacked sheets to be clinched (not shown), thus relieving excess tooling material stresses and reducing the likelihood of premature tooling failure.
  • the addition of the rounded tip end surface 54 improves the drawing of material into the die by reducing the shearing action of the punch tip 40. This attribute is particularly advantageous when clinching thick materials, namely in the range of about 0.25 to about 1.00 inch (about 6.3 mm to about 25.4 mm) thick sheet stacks, but can also be useful for clinching thinner materials as reduced clinching pressures are inherently required to complete the same task.
  • the punch tip 40 at the rounded tip end surface 54 has a diameter of about 0.716 inches (about 18.2 mm) at the rounded tip end surface 54 of the punch tip 40 is illustratively machined with a convex profile having a radius of about 3 inches (about 76.2 mm).
  • the punch tip 40 is illustratively frustum shaped, whereby the outer peripheral wall 56 of the punch tip 40 is tapered towards the rounded tip end surface 54.
  • the diameter of the punch tip 40 decreases linearly as one moves away from the punch shoulder 42 towards the tip end surface 54, which facilitates the removal of the punch tip 40 from clinched sheets once a clinch has been formed.
  • the outer peripheral wall 56 forms an angle of about 0° to about 6° with the longitudinal axis of the punch 34.
  • the outer peripheral wall 56 forms an angle of about 2° to about 4° with the longitudinal axis of the punch 34.
  • the outer peripheral wall 56 forms an angle of about 3° with the longitudinal axis of the punch 34.
  • the punch 34 is comprised of a punch tip 40 machined such that the outer peripheral wall 56 has a ridged (or stepped) profile comprised of two or more concentric disk portions as in 58.
  • the concentric disk portions as in 58 are of decreasing diameter as one moves away from the punch shoulder 42 towards the tip end surface 54.
  • the die 38 is also presented in this illustrative embodiment as having a cylindrical symmetry.
  • the die is manufactured, for example, from heat treated D2 tool steel, powdered metallurgical tool steel (PM tool steel, such as Vanadis 4®) or the like.
  • the die 38 comprises a die cavity 60 comprising an open end 62 and a closed end 64.
  • An inner surface 66 of the closed end 64 has a raised surface profile, illustratively curved and convex, and having a radius R of about 1.35 inches (about 35 mm).
  • the die 38 further comprises a dowel hole 68 in a base end 70 thereof.
  • a dowel 72 which forms part of the die anvil 32, is centred and aligned with the punch tip 40, and serves to guide and align the die 38.
  • a set of die anvil walls 74 as discussed above in this illustrative embodiment comprising a collet style mounting, tightly accepts the die 38; thereby securing the die 38 in place while allowing the die 38 to be easily interchanged.
  • the die anvil 32 is in turn secured to a clinching base 76, or table, by a suitable fastening means, illustratively a set of bolts 78 which are inserted and tightened into threaded openings 80 in the base 76.
  • a suitable fastening means illustratively a set of bolts 78 which are inserted and tightened into threaded openings 80 in the base 76.
  • the die anvil 32 further comprises a stripping mechanism 82 comprised of a stripper 84 mounted to a base 86 using a hinge mechanism 88 around which the stripper 84 can pivot.
  • the stripping mechanism 82 facilitates removal of clinched sheets from the clinching tool 10.
  • the raised surface profile of the inner surface 66 of the closed end 64 comprises a rounded annular depression 90 at its periphery and a convex or domed protrusion 92 towards the centre of the surface 66.
  • the raised surface profile of the surface 66 facilitates movement of the ductile metal sheets within the die cavity 60 during clinching (as discussed hereinbelow), relieving excess tooling material stresses and thereby reducing the likelihood of premature tooling failure. This attribute is useful when clinching thick materials, namely in the range of about 0.25 inch to about 1.00 inch (about 6.3 mm to about 25.4 mm) thick sheet stacks, but can also be useful for clinching thinner materials.
  • the die cavity 60 is of a slight frustum shape where a cavity peripheral wall 94 tapering inwards from the open end 62 to the closed end 64.
  • a circular cross section of the die cavity 60 decreases linearly from the open end 62 to the closed end 64.
  • the frustum shape of the die cavity 60 facilitates the removal of the clinched sheets from the die cavity 60 once the clinch is formed.
  • the cavity peripheral wall 94 forms an angle of about 0° to about 6° with the longitudinal axis of the die 38.
  • the die peripheral wall 94 forms an angle of about 2° to about 4° with the longitudinal axis of the die 38.
  • the cavity peripheral wall 94 forms an angle of about 3° with the longitudinal axis of the die 38.
  • the open end 62 of the die cavity 60 comprises a rounded shoulder 96.
  • the rounded shoulder 96 provides for smoother penetration of the ductile metal sheets into the die cavity 60 during a clinching action.
  • the height Zi of the raised surface profile of the surface 66 of the closed end 64 is illustratively between 25% and 35% of the maximum depth Z2 of the die cavity 60.
  • the sheets • (A & B) are positioned side by side and placed between the punch 34 and die 38.
  • the punch tip 40 makes contact with a first sheet A.
  • the punch tip 40 forces the punch tip 40 into the first ductile sheet A and a second ductile sheet B causing material from the ductile sheets A and B to move into the die cavity 60.
  • the rounded tip end surface 54 reaches the level of the open end 62 of the die 38 a clinching action takes place, wherein a clinch volume of the material of the ductile sheets A and B is drawn into the die cavity 60 through the die opening 32.
  • the ductile sheets A and B are compressed between the rounded tip end surface 54 and the raised surface profile 66, thereby causing the material of the ductile sheets A and B to be deformed, this creating a mechanical interlock between the ductile sheets A and B in the region of the clinch.
  • the punch shoulder 42 serves to prevent necking (over drawing of the ductile sheets A and B) due to over travel of the punch 34 and to limit the penetration of the punch tip 40 into the material of the sheets A and B.
  • the punch shoulder 42 also helps to some degree to force the material of the sheets A and B into the die cavity 60, thereby improving the quality of the clinch.
  • a typical cross section of a sample clinch 92 reveals, in an illustrative embodiment of the present invention, a punch cavity 94 on a first side of the sheets defined by an inverted thimble like volume with a circular opening 96 and a rounded closed face 98.
  • a lower face 100 of the sheet A and an upper face 102 of the sheet B are generally smooth and in contact, and follow the profile of the punch tip (40 in Figure 3A) in the region of the clinch 92. This maintains a substantially constant thickness of the sheet A along the rounded closed face 98.
  • a bottom surface 104 of the sheet B has substantially the same shape as the profile of the die cavity (60 in Figure 6).
  • Superior clinches are those where the ductile of material of sheets A and B are deformed in a manner that a mechanical interlock is formed between the sheets below a lower surface 106 of the sheet in closest proximity to the die (in the case at hand, sheet B).
  • those clinches where a diameter D of the lower face 100 of the first sheet A is greater than the diameter D' of the clinch in the second sheet B provide such a mechanical interlock (i.e. a bulge formed in the ductile material of the first sheet A in the region of the clinch interlocks with a corresponding bulge formed in the ductile material of the second sheet B).
  • depth refers to the deepest (or lowest) point in the die.

Landscapes

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

Abstract

L'invention concerne une pince à river permettant de rassembler mécaniquement au moins deux feuilles empilées composées d'une matière ductile, ladite pince comprenant un perforateur et un poinçon alignés axialement. La cavité du poinçon présente un profil de surface rond au niveau de son extrémité fermée, ce qui permet de faciliter l'écoulement de matière, pendant l'action de rivure. Tandis que ce modèle, permet de minimiser des contraintes de matière et de diminuer la probabilité d'une défaillance d'usinage prématurée, il sert à fixer par rivure des feuilles plus épaisses, au moyen de la formation d'une rivure sécurisée et distincte.
PCT/CA2004/001934 2004-11-08 2004-11-08 Pince à river, poinçon et procédé d'utilisation associé Ceased WO2006047848A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI20070361A FI20070361A7 (fi) 2004-11-08 2004-11-08 Niittaustyökalu, niittausmuotti ja menetelmä niiden käyttämiseksi
CA002586776A CA2586776A1 (fr) 2004-11-08 2004-11-08 Pince a river, poincon et procede d'utilisation associe
PCT/CA2004/001934 WO2006047848A1 (fr) 2004-11-08 2004-11-08 Pince à river, poinçon et procédé d'utilisation associé
AU2004324570A AU2004324570A1 (en) 2004-11-08 2004-11-08 Clinching tool, die and method for use thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2004/001934 WO2006047848A1 (fr) 2004-11-08 2004-11-08 Pince à river, poinçon et procédé d'utilisation associé

Publications (1)

Publication Number Publication Date
WO2006047848A1 true WO2006047848A1 (fr) 2006-05-11

Family

ID=36318838

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2004/001934 Ceased WO2006047848A1 (fr) 2004-11-08 2004-11-08 Pince à river, poinçon et procédé d'utilisation associé

Country Status (3)

Country Link
AU (1) AU2004324570A1 (fr)
CA (1) CA2586776A1 (fr)
WO (1) WO2006047848A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008098389A1 (fr) * 2007-02-13 2008-08-21 Inventio Ag Procédé et outil pour clincher des tôles épaisses, et utilisation de l'outil
WO2010076240A1 (fr) * 2008-12-31 2010-07-08 Schmitz Gotha Fahrzeugwerke Gmbh Procédé de fabrication d'un système de benne basculante pour véhicule et système de benne basculante pour véhicule
CN108817227A (zh) * 2018-07-12 2018-11-16 郑州云海信息技术有限公司 一种冲压凸点结构及模具和成型方法
EP4574296A1 (fr) * 2023-12-19 2025-06-25 Politechnika Wroclawska Agencement d'outils pour la formation de joints ponctuels et procédé de formation de joints ponctuels rivetés à paramètres de résistance améliorés

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230006085A (ko) * 2021-07-02 2023-01-10 주식회사 엘지에너지솔루션 냉각 부재 및 그 제조 방법, 그리고 이를 포함하는 전지 팩
WO2024086467A1 (fr) * 2022-10-18 2024-04-25 Martinrea International US Inc. Ensemble et procédé de formation d'un clinchage de bord de panneaux se chevauchant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992857A (en) * 1957-12-20 1961-07-18 Lemmerz Werke Gmbh Rivetless fastening between rim and body of a vehicle wheel
US3771216A (en) * 1971-10-27 1973-11-13 Johnson Die & Eng Co Method and tooling for extruding a closed end rivet
US4760634A (en) * 1985-09-14 1988-08-02 Eugen Rapp Method of connecting thin plates
CA2094941A1 (fr) * 1992-05-04 1993-11-05 Gary M. Cronn Poincon et bloc a colonnes pour le repliage de la tole

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992857A (en) * 1957-12-20 1961-07-18 Lemmerz Werke Gmbh Rivetless fastening between rim and body of a vehicle wheel
US3771216A (en) * 1971-10-27 1973-11-13 Johnson Die & Eng Co Method and tooling for extruding a closed end rivet
US4760634A (en) * 1985-09-14 1988-08-02 Eugen Rapp Method of connecting thin plates
US4831704A (en) * 1985-09-14 1989-05-23 Eugen Rapp Apparatus for connecting thin plates
CA2094941A1 (fr) * 1992-05-04 1993-11-05 Gary M. Cronn Poincon et bloc a colonnes pour le repliage de la tole

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008098389A1 (fr) * 2007-02-13 2008-08-21 Inventio Ag Procédé et outil pour clincher des tôles épaisses, et utilisation de l'outil
RU2464118C2 (ru) * 2007-02-13 2012-10-20 Инвенцио Аг Способ и инструмент для приклепывания толстых металлических листов, а также применение клепального инструмента, или клепального аппарата, или клепального прибора
AU2008215090B2 (en) * 2007-02-13 2013-01-10 Inventio Ag Method and tool for clinching thick sheet metal, and use of the tool
CN101610859B (zh) * 2007-02-13 2013-07-17 因温特奥股份公司 用于铆接厚金属板的方法和工具以及这种工具的使用方法
US9283612B2 (en) 2007-02-13 2016-03-15 Inventio Ag Method and tool for clinching thick plates and use of the tool or of the clinching apparatus or of the clinching appliance
WO2010076240A1 (fr) * 2008-12-31 2010-07-08 Schmitz Gotha Fahrzeugwerke Gmbh Procédé de fabrication d'un système de benne basculante pour véhicule et système de benne basculante pour véhicule
CN108817227A (zh) * 2018-07-12 2018-11-16 郑州云海信息技术有限公司 一种冲压凸点结构及模具和成型方法
EP4574296A1 (fr) * 2023-12-19 2025-06-25 Politechnika Wroclawska Agencement d'outils pour la formation de joints ponctuels et procédé de formation de joints ponctuels rivetés à paramètres de résistance améliorés

Also Published As

Publication number Publication date
CA2586776A1 (fr) 2006-05-11
AU2004324570A1 (en) 2006-05-11

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